{"id":6695,"date":"2026-10-22T08:47:27","date_gmt":"2026-10-22T08:47:27","guid":{"rendered":"https:\/\/www.novatec.com\/knowledge-center\/?page_id=6695"},"modified":"2026-10-22T18:25:50","modified_gmt":"2026-10-22T18:25:50","slug":"what-is-ficks-law-resin-drying","status":"publish","type":"page","link":"https:\/\/www.novatec.com\/knowledge-center\/plastic-drying-knowledge-center\/resin-drying-basics\/what-is-ficks-law-resin-drying\/","title":{"rendered":"What Is Fick&#8217;s Law, and What Does It Have to Do With Drying Plastic?"},"content":{"rendered":"\t\t<div data-elementor-type=\"wp-page\" data-elementor-id=\"6695\" class=\"elementor elementor-6695\" data-elementor-post-type=\"page\">\n\t\t\t\t<div class=\"elementor-element elementor-element-e67cb91 e-con-full e-flex e-con e-parent\" data-id=\"e67cb91\" data-element_type=\"container\">\n\t\t<div class=\"elementor-element elementor-element-8955111 e-con-full e-flex e-con e-child\" data-id=\"8955111\" data-element_type=\"container\">\n\t\t\t\t<div class=\"elementor-element elementor-element-1cf843d elementor-widget elementor-widget-shortcode\" data-id=\"1cf843d\" data-element_type=\"widget\" data-widget_type=\"shortcode.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t<div class=\"elementor-shortcode\">\t\t<div data-elementor-type=\"section\" data-elementor-id=\"666\" class=\"elementor elementor-666\" data-elementor-post-type=\"elementor_library\">\n\t\t\t<div class=\"elementor-element elementor-element-1ffd43f e-con-full e-flex e-con e-parent\" data-id=\"1ffd43f\" data-element_type=\"container\">\n\t\t<div class=\"elementor-element elementor-element-dcfec2f e-con-full e-flex e-con e-child\" data-id=\"dcfec2f\" data-element_type=\"container\">\n\t\t\t\t<div class=\"elementor-element elementor-element-38c4973 hfe-submenu-icon-plus elementor-widget__width-auto hfe-nav-menu__align-left hfe-link-redirect-child hfe-nav-menu__breakpoint-tablet elementor-widget elementor-widget-navigation-menu\" data-id=\"38c4973\" data-element_type=\"widget\" data-settings=\"{&quot;padding_vertical_menu_item&quot;:{&quot;unit&quot;:&quot;px&quot;,&quot;size&quot;:11,&quot;sizes&quot;:[]},&quot;padding_vertical_dropdown_item&quot;:{&quot;unit&quot;:&quot;px&quot;,&quot;size&quot;:6,&quot;sizes&quot;:[]},&quot;menu_space_between&quot;:{&quot;unit&quot;:&quot;px&quot;,&quot;size&quot;:0,&quot;sizes&quot;:[]},&quot;padding_horizontal_menu_item&quot;:{&quot;unit&quot;:&quot;px&quot;,&quot;size&quot;:15,&quot;sizes&quot;:[]},&quot;padding_horizontal_menu_item_tablet&quot;:{&quot;unit&quot;:&quot;px&quot;,&quot;size&quot;:&quot;&quot;,&quot;sizes&quot;:[]},&quot;padding_horizontal_menu_item_mobile&quot;:{&quot;unit&quot;:&quot;px&quot;,&quot;size&quot;:&quot;&quot;,&quot;sizes&quot;:[]},&quot;padding_vertical_menu_item_tablet&quot;:{&quot;unit&quot;:&quot;px&quot;,&quot;size&quot;:&quot;&quot;,&quot;sizes&quot;:[]},&quot;padding_vertical_menu_item_mobile&quot;:{&quot;unit&quot;:&quot;px&quot;,&quot;size&quot;:&quot;&quot;,&quot;sizes&quot;:[]},&quot;menu_space_between_tablet&quot;:{&quot;unit&quot;:&quot;px&quot;,&quot;size&quot;:&quot;&quot;,&quot;sizes&quot;:[]},&quot;menu_space_between_mobile&quot;:{&quot;unit&quot;:&quot;px&quot;,&quot;size&quot;:&quot;&quot;,&quot;sizes&quot;:[]},&quot;dropdown_border_radius&quot;:{&quot;unit&quot;:&quot;px&quot;,&quot;top&quot;:&quot;&quot;,&quot;right&quot;:&quot;&quot;,&quot;bottom&quot;:&quot;&quot;,&quot;left&quot;:&quot;&quot;,&quot;isLinked&quot;:true},&quot;dropdown_border_radius_tablet&quot;:{&quot;unit&quot;:&quot;px&quot;,&quot;top&quot;:&quot;&quot;,&quot;right&quot;:&quot;&quot;,&quot;bottom&quot;:&quot;&quot;,&quot;left&quot;:&quot;&quot;,&quot;isLinked&quot;:true},&quot;dropdown_border_radius_mobile&quot;:{&quot;unit&quot;:&quot;px&quot;,&quot;top&quot;:&quot;&quot;,&quot;right&quot;:&quot;&quot;,&quot;bottom&quot;:&quot;&quot;,&quot;left&quot;:&quot;&quot;,&quot;isLinked&quot;:true},&quot;padding_horizontal_dropdown_item&quot;:{&quot;unit&quot;:&quot;px&quot;,&quot;size&quot;:&quot;&quot;,&quot;sizes&quot;:[]},&quot;padding_horizontal_dropdown_item_tablet&quot;:{&quot;unit&quot;:&quot;px&quot;,&quot;size&quot;:&quot;&quot;,&quot;sizes&quot;:[]},&quot;padding_horizontal_dropdown_item_mobile&quot;:{&quot;unit&quot;:&quot;px&quot;,&quot;size&quot;:&quot;&quot;,&quot;sizes&quot;:[]},&quot;padding_vertical_dropdown_item_tablet&quot;:{&quot;unit&quot;:&quot;px&quot;,&quot;size&quot;:&quot;&quot;,&quot;sizes&quot;:[]},&quot;padding_vertical_dropdown_item_mobile&quot;:{&quot;unit&quot;:&quot;px&quot;,&quot;size&quot;:&quot;&quot;,&quot;sizes&quot;:[]},&quot;distance_from_menu&quot;:{&quot;unit&quot;:&quot;px&quot;,&quot;size&quot;:&quot;&quot;,&quot;sizes&quot;:[]},&quot;distance_from_menu_tablet&quot;:{&quot;unit&quot;:&quot;px&quot;,&quot;size&quot;:&quot;&quot;,&quot;sizes&quot;:[]},&quot;distance_from_menu_mobile&quot;:{&quot;unit&quot;:&quot;px&quot;,&quot;size&quot;:&quot;&quot;,&quot;sizes&quot;:[]},&quot;toggle_size&quot;:{&quot;unit&quot;:&quot;px&quot;,&quot;size&quot;:&quot;&quot;,&quot;sizes&quot;:[]},&quot;toggle_size_tablet&quot;:{&quot;unit&quot;:&quot;px&quot;,&quot;size&quot;:&quot;&quot;,&quot;sizes&quot;:[]},&quot;toggle_size_mobile&quot;:{&quot;unit&quot;:&quot;px&quot;,&quot;size&quot;:&quot;&quot;,&quot;sizes&quot;:[]},&quot;toggle_border_width&quot;:{&quot;unit&quot;:&quot;px&quot;,&quot;size&quot;:&quot;&quot;,&quot;sizes&quot;:[]},&quot;toggle_border_width_tablet&quot;:{&quot;unit&quot;:&quot;px&quot;,&quot;size&quot;:&quot;&quot;,&quot;sizes&quot;:[]},&quot;toggle_border_width_mobile&quot;:{&quot;unit&quot;:&quot;px&quot;,&quot;size&quot;:&quot;&quot;,&quot;sizes&quot;:[]},&quot;toggle_border_radius&quot;:{&quot;unit&quot;:&quot;px&quot;,&quot;size&quot;:&quot;&quot;,&quot;sizes&quot;:[]},&quot;toggle_border_radius_tablet&quot;:{&quot;unit&quot;:&quot;px&quot;,&quot;size&quot;:&quot;&quot;,&quot;sizes&quot;:[]},&quot;toggle_border_radius_mobile&quot;:{&quot;unit&quot;:&quot;px&quot;,&quot;size&quot;:&quot;&quot;,&quot;sizes&quot;:[]}}\" data-widget_type=\"navigation-menu.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t<div class=\"hfe-nav-menu hfe-layout-vertical hfe-nav-menu-layout vertical\" data-layout=\"vertical\">\n\t\t\t\t<div role=\"button\" class=\"hfe-nav-menu__toggle elementor-clickable\" tabindex=\"0\" aria-label=\"Menu Toggle\">\n\t\t\t\t\t<span class=\"screen-reader-text\">Menu<\/span>\n\t\t\t\t\t<div class=\"hfe-nav-menu-icon\">\n\t\t\t\t\t\t<svg aria-hidden=\"true\"  class=\"e-font-icon-svg e-fas-align-justify\" viewBox=\"0 0 448 512\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\"><path d=\"M432 416H16a16 16 0 0 0-16 16v32a16 16 0 0 0 16 16h416a16 16 0 0 0 16-16v-32a16 16 0 0 0-16-16zm0-128H16a16 16 0 0 0-16 16v32a16 16 0 0 0 16 16h416a16 16 0 0 0 16-16v-32a16 16 0 0 0-16-16zm0-128H16a16 16 0 0 0-16 16v32a16 16 0 0 0 16 16h416a16 16 0 0 0 16-16v-32a16 16 0 0 0-16-16zm0-128H16A16 16 0 0 0 0 48v32a16 16 0 0 0 16 16h416a16 16 0 0 0 16-16V48a16 16 0 0 0-16-16z\"><\/path><\/svg>\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<nav class=\"hfe-nav-menu__layout-vertical hfe-nav-menu__submenu-plus\" data-toggle-icon=\"&lt;svg aria-hidden=&quot;true&quot; tabindex=&quot;0&quot; class=&quot;e-font-icon-svg e-fas-align-justify&quot; viewBox=&quot;0 0 448 512&quot; xmlns=&quot;http:\/\/www.w3.org\/2000\/svg&quot;&gt;&lt;path d=&quot;M432 416H16a16 16 0 0 0-16 16v32a16 16 0 0 0 16 16h416a16 16 0 0 0 16-16v-32a16 16 0 0 0-16-16zm0-128H16a16 16 0 0 0-16 16v32a16 16 0 0 0 16 16h416a16 16 0 0 0 16-16v-32a16 16 0 0 0-16-16zm0-128H16a16 16 0 0 0-16 16v32a16 16 0 0 0 16 16h416a16 16 0 0 0 16-16v-32a16 16 0 0 0-16-16zm0-128H16A16 16 0 0 0 0 48v32a16 16 0 0 0 16 16h416a16 16 0 0 0 16-16V48a16 16 0 0 0-16-16z&quot;&gt;&lt;\/path&gt;&lt;\/svg&gt;\" data-close-icon=\"&lt;svg aria-hidden=&quot;true&quot; tabindex=&quot;0&quot; class=&quot;e-font-icon-svg e-far-window-close&quot; viewBox=&quot;0 0 512 512&quot; xmlns=&quot;http:\/\/www.w3.org\/2000\/svg&quot;&gt;&lt;path d=&quot;M464 32H48C21.5 32 0 53.5 0 80v352c0 26.5 21.5 48 48 48h416c26.5 0 48-21.5 48-48V80c0-26.5-21.5-48-48-48zm0 394c0 3.3-2.7 6-6 6H54c-3.3 0-6-2.7-6-6V86c0-3.3 2.7-6 6-6h404c3.3 0 6 2.7 6 6v340zM356.5 194.6L295.1 256l61.4 61.4c4.6 4.6 4.6 12.1 0 16.8l-22.3 22.3c-4.6 4.6-12.1 4.6-16.8 0L256 295.1l-61.4 61.4c-4.6 4.6-12.1 4.6-16.8 0l-22.3-22.3c-4.6-4.6-4.6-12.1 0-16.8l61.4-61.4-61.4-61.4c-4.6-4.6-4.6-12.1 0-16.8l22.3-22.3c4.6-4.6 12.1-4.6 16.8 0l61.4 61.4 61.4-61.4c4.6-4.6 12.1-4.6 16.8 0l22.3 22.3c4.7 4.6 4.7 12.1 0 16.8z&quot;&gt;&lt;\/path&gt;&lt;\/svg&gt;\" data-full-width=\"yes\">\n\t\t\t\t\t<ul id=\"menu-1-38c4973\" class=\"hfe-nav-menu\"><li id=\"menu-item-4477\" class=\"menu-item menu-item-type-post_type menu-item-object-page parent hfe-creative-menu\"><a href=\"https:\/\/www.novatec.com\/knowledge-center\/plastic-drying-knowledge-center\/\" class = \"hfe-menu-item\">Plastic Drying Knowledge Center<\/a><\/li>\n<li id=\"menu-item-1565\" class=\"menu-item menu-item-type-post_type menu-item-object-page parent hfe-creative-menu\"><a href=\"https:\/\/www.novatec.com\/knowledge-center\/plastic-drying-knowledge-center\/resin-moisture\/\" class = \"hfe-menu-item\">Understanding Moisture in Resin<\/a><\/li>\n<li id=\"menu-item-3038\" class=\"menu-item menu-item-type-custom menu-item-object-custom menu-item-has-children parent hfe-has-submenu hfe-creative-menu\"><div class=\"hfe-has-submenu-container\" tabindex=\"0\" role=\"button\" aria-haspopup=\"true\" aria-expanded=\"false\"><a aria-expanded=\"false\" href=\"#\" class = \"hfe-menu-item\">Drying Basics<span class='hfe-menu-toggle sub-arrow hfe-menu-child-0'><i class='fa'><\/i><\/span><\/a><\/div>\n<ul class=\"sub-menu\">\n\t<li id=\"menu-item-1566\" class=\"menu-item menu-item-type-post_type menu-item-object-page hfe-creative-menu\"><a href=\"https:\/\/www.novatec.com\/knowledge-center\/plastic-drying-knowledge-center\/resin-drying-basics\/\" class = \"hfe-sub-menu-item\">Resin Drying Basics<\/a><\/li>\n\t<li id=\"menu-item-6763\" class=\"menu-item menu-item-type-post_type menu-item-object-page hfe-creative-menu\"><a href=\"https:\/\/www.novatec.com\/knowledge-center\/plastic-drying-knowledge-center\/resin-drying-basics\/how-moisture-leaves-a-plastic-pellet\/\" class = \"hfe-sub-menu-item\">How Moisture Leaves a Plastic Pellet<\/a><\/li>\n\t<li id=\"menu-item-6761\" class=\"menu-item menu-item-type-post_type menu-item-object-page hfe-creative-menu\"><a href=\"https:\/\/www.novatec.com\/knowledge-center\/plastic-drying-knowledge-center\/resin-drying-basics\/what-is-ficks-law-resin-drying\/\" class = \"hfe-sub-menu-item\">Fick\u2019s Law and Resin Drying<\/a><\/li>\n\t<li id=\"menu-item-6762\" class=\"menu-item menu-item-type-post_type menu-item-object-page hfe-creative-menu\"><a href=\"https:\/\/www.novatec.com\/knowledge-center\/plastic-drying-knowledge-center\/resin-drying-basics\/the-moisture-rebound-test\/\" class = \"hfe-sub-menu-item\">The Moisture Rebound Test<\/a><\/li>\n\t<li id=\"menu-item-3039\" class=\"menu-item menu-item-type-custom menu-item-object-custom hfe-creative-menu\"><a href=\"https:\/\/www.novatec.com\/wp-content\/uploads\/2023\/04\/Best-Practices-for-Effective-Polymer-Drying.pdf\" class = \"hfe-sub-menu-item\">Best Practices for Effective Polymer Drying<\/a><\/li>\n\t<li id=\"menu-item-3622\" class=\"menu-item menu-item-type-post_type menu-item-object-page hfe-creative-menu\"><a href=\"https:\/\/www.novatec.com\/knowledge-center\/plastic-drying-knowledge-center\/resin-drying-basics\/overdrying-nylon-the-hidden-danger-sabotaging-your-parts\/\" class = \"hfe-sub-menu-item\">Overdrying Nylon: The Hidden Danger Sabotaging Your Parts<\/a><\/li>\n\t<li id=\"menu-item-3566\" class=\"menu-item menu-item-type-post_type menu-item-object-page hfe-creative-menu\"><a href=\"https:\/\/www.novatec.com\/knowledge-center\/plastic-drying-knowledge-center\/resin-drying-basics\/the-hidden-dangers-of-desiccant-dust-in-resin-processing\/\" class = \"hfe-sub-menu-item\">The Hidden Dangers of Desiccant Dust in Resin Processing<\/a><\/li>\n\t<li id=\"menu-item-1567\" class=\"menu-item menu-item-type-post_type menu-item-object-page hfe-creative-menu\"><a href=\"https:\/\/www.novatec.com\/knowledge-center\/plastic-drying-knowledge-center\/resin-drying-basics\/glossary-plastics-performance-issues\/\" class = \"hfe-sub-menu-item\">Glossary: Plastics Performance Issues<\/a><\/li>\n\t<li id=\"menu-item-683\" class=\"menu-item menu-item-type-post_type menu-item-object-page hfe-creative-menu\"><a href=\"https:\/\/www.novatec.com\/knowledge-center\/plastic-drying-knowledge-center\/resin-drying-basics\/modern-vs-old\/\" class = \"hfe-sub-menu-item\">Cost: Old vs. Modern Drying Technology<\/a><\/li>\n<\/ul>\n<\/li>\n<li id=\"menu-item-3046\" class=\"menu-item menu-item-type-custom menu-item-object-custom menu-item-has-children parent hfe-has-submenu hfe-creative-menu\"><div class=\"hfe-has-submenu-container\" tabindex=\"0\" role=\"button\" aria-haspopup=\"true\" aria-expanded=\"false\"><a aria-expanded=\"false\" href=\"#\" class = \"hfe-menu-item\">Resin Types<span class='hfe-menu-toggle sub-arrow hfe-menu-child-0'><i class='fa'><\/i><\/span><\/a><\/div>\n<ul class=\"sub-menu\">\n\t<li id=\"menu-item-1568\" class=\"menu-item menu-item-type-post_type menu-item-object-page hfe-creative-menu\"><a href=\"https:\/\/www.novatec.com\/knowledge-center\/plastic-drying-knowledge-center\/resin-types\/\" class = \"hfe-sub-menu-item\">Resin Types &#038; Their Impact on Drying<\/a><\/li>\n<\/ul>\n<\/li>\n<li id=\"menu-item-3047\" class=\"menu-item menu-item-type-custom menu-item-object-custom menu-item-has-children parent hfe-has-submenu hfe-creative-menu\"><div class=\"hfe-has-submenu-container\" tabindex=\"0\" role=\"button\" aria-haspopup=\"true\" aria-expanded=\"false\"><a aria-expanded=\"false\" href=\"#\" class = \"hfe-menu-item\">Types of Resin Dryers<span class='hfe-menu-toggle sub-arrow hfe-menu-child-0'><i class='fa'><\/i><\/span><\/a><\/div>\n<ul class=\"sub-menu\">\n\t<li id=\"menu-item-684\" class=\"menu-item menu-item-type-post_type menu-item-object-page hfe-creative-menu\"><a href=\"https:\/\/www.novatec.com\/knowledge-center\/plastic-drying-knowledge-center\/resin-dryer-technologies\/\" class = \"hfe-sub-menu-item\">A Complete Guide to Resin Drying Technologies<\/a><\/li>\n\t<li id=\"menu-item-3475\" class=\"menu-item menu-item-type-post_type menu-item-object-page hfe-creative-menu\"><a href=\"https:\/\/www.novatec.com\/knowledge-center\/plastic-drying-knowledge-center\/resin-dryer-technologies\/the-ultimate-guide-to-choosing-the-right-desiccant-resin-dryer\/\" class = \"hfe-sub-menu-item\">The Ultimate Guide to Choosing the Right Desiccant Resin Dryer<\/a><\/li>\n\t<li id=\"menu-item-6764\" class=\"menu-item menu-item-type-post_type menu-item-object-page hfe-creative-menu\"><a href=\"https:\/\/www.novatec.com\/knowledge-center\/plastic-drying-knowledge-center\/resin-dryer-technologies\/what-is-desiccant-regeneration\/\" class = \"hfe-sub-menu-item\">Desiccant Regeneration and Energy Use<\/a><\/li>\n\t<li id=\"menu-item-4656\" class=\"menu-item menu-item-type-post_type menu-item-object-page hfe-creative-menu\"><a href=\"https:\/\/www.novatec.com\/knowledge-center\/plastic-drying-knowledge-center\/resin-dryer-technologies\/the-ultimate-guide-to-compressed-air-resin-dryers-for-plastics-processors\/\" class = \"hfe-sub-menu-item\">The Ultimate Guide to Compressed Air Resin Dryers for Plastics Processors<\/a><\/li>\n\t<li id=\"menu-item-5500\" class=\"menu-item menu-item-type-post_type menu-item-object-page hfe-creative-menu\"><a href=\"https:\/\/www.novatec.com\/knowledge-center\/plastic-drying-knowledge-center\/resin-dryer-technologies\/compressed-air-resin-dryers\/the-science-of-vacuum-and-desiccant-drying-for-engineering-plastics\/\" class = \"hfe-sub-menu-item\">The Science of Vacuum and Desiccant Drying for Engineering Plastics<\/a><\/li>\n\t<li id=\"menu-item-1569\" class=\"menu-item menu-item-type-post_type menu-item-object-page hfe-creative-menu\"><a href=\"https:\/\/www.novatec.com\/knowledge-center\/plastic-drying-knowledge-center\/resin-dryer-technologies\/silo-dehumidification-hot-air-dryers\/\" class = \"hfe-sub-menu-item\">Silo Dehumidification\/Hot Air Dryers<\/a><\/li>\n\t<li id=\"menu-item-2755\" class=\"menu-item menu-item-type-post_type menu-item-object-page hfe-creative-menu\"><a href=\"https:\/\/www.novatec.com\/knowledge-center\/plastic-drying-knowledge-center\/resin-dryer-technologies\/compressed-air-resin-dryers\/\" class = \"hfe-sub-menu-item\">Compressed Air Dryers<\/a><\/li>\n\t<li id=\"menu-item-1573\" class=\"menu-item menu-item-type-post_type menu-item-object-page hfe-creative-menu\"><a href=\"https:\/\/www.novatec.com\/knowledge-center\/plastic-drying-knowledge-center\/resin-dryer-technologies\/membrane-dryers\/\" class = \"hfe-sub-menu-item\">Membrane Dryers<\/a><\/li>\n\t<li id=\"menu-item-2749\" class=\"menu-item menu-item-type-post_type menu-item-object-page hfe-creative-menu\"><a href=\"https:\/\/www.novatec.com\/knowledge-center\/plastic-drying-knowledge-center\/resin-dryer-technologies\/resin-vacuum-dryers\/\" class = \"hfe-sub-menu-item\">Vacuum Dryers<\/a><\/li>\n\t<li id=\"menu-item-2754\" class=\"menu-item menu-item-type-post_type menu-item-object-page hfe-creative-menu\"><a href=\"https:\/\/www.novatec.com\/knowledge-center\/plastic-drying-knowledge-center\/resin-dryer-technologies\/dual-bed-dryers\/\" class = \"hfe-sub-menu-item\">Dual Bed Dryers<\/a><\/li>\n\t<li id=\"menu-item-2752\" class=\"menu-item menu-item-type-post_type menu-item-object-page hfe-creative-menu\"><a href=\"https:\/\/www.novatec.com\/knowledge-center\/plastic-drying-knowledge-center\/resin-dryer-technologies\/desiccant-wheel-rotor-dryers\/\" class = \"hfe-sub-menu-item\">Desiccant Wheel\/Rotor Dryers<\/a><\/li>\n\t<li id=\"menu-item-2751\" class=\"menu-item menu-item-type-post_type menu-item-object-page hfe-creative-menu\"><a href=\"https:\/\/www.novatec.com\/knowledge-center\/plastic-drying-knowledge-center\/resin-dryer-technologies\/resin-dryer-technologies-crystallizers-for-reprocessing-pet\/\" class = \"hfe-sub-menu-item\">Crystallizers<\/a><\/li>\n\t<li id=\"menu-item-2753\" class=\"menu-item menu-item-type-post_type menu-item-object-page hfe-creative-menu\"><a href=\"https:\/\/www.novatec.com\/knowledge-center\/plastic-drying-knowledge-center\/resin-dryer-technologies\/drying-hoppers-for-plastic-resins\/\" class = \"hfe-sub-menu-item\">Drying Hoppers for Plastic Resins<\/a><\/li>\n\t<li id=\"menu-item-1574\" class=\"menu-item menu-item-type-post_type menu-item-object-page hfe-creative-menu\"><a href=\"https:\/\/www.novatec.com\/knowledge-center\/plastic-drying-knowledge-center\/resin-dryer-technologies\/gas-fired-process-heaters-for-resins\/\" class = \"hfe-sub-menu-item\">Gas-Fired Process Heaters<\/a><\/li>\n\t<li id=\"menu-item-1571\" class=\"menu-item menu-item-type-post_type menu-item-object-page hfe-creative-menu\"><a href=\"https:\/\/www.novatec.com\/knowledge-center\/plastic-drying-knowledge-center\/resin-dryer-technologies\/portable-resin-drying-systems\/\" class = \"hfe-sub-menu-item\">Portable Resin Drying Systems<\/a><\/li>\n\t<li id=\"menu-item-2750\" class=\"menu-item menu-item-type-post_type menu-item-object-page hfe-creative-menu\"><a href=\"https:\/\/www.novatec.com\/knowledge-center\/plastic-drying-knowledge-center\/resin-dryer-technologies\/central-resin-dryers\/\" class = \"hfe-sub-menu-item\">Central Resin Dryers<\/a><\/li>\n\t<li id=\"menu-item-1572\" class=\"menu-item menu-item-type-post_type menu-item-object-page hfe-creative-menu\"><a href=\"https:\/\/www.novatec.com\/knowledge-center\/plastic-drying-knowledge-center\/resin-dryer-technologies\/pet-energy-saving-drying-systems\/\" class = \"hfe-sub-menu-item\">PET Energy-Saving Drying Systems<\/a><\/li>\n<\/ul>\n<\/li>\n<li id=\"menu-item-3057\" class=\"menu-item menu-item-type-post_type menu-item-object-page parent hfe-creative-menu\"><a href=\"https:\/\/www.novatec.com\/knowledge-center\/plastic-drying-knowledge-center\/press-side-vs-central-plastic-resin-drying\/\" class = \"hfe-menu-item\">Press-Side vs. Central Plastic Resin Drying<\/a><\/li>\n<li id=\"menu-item-3339\" class=\"menu-item menu-item-type-post_type menu-item-object-page parent hfe-creative-menu\"><a href=\"https:\/\/www.novatec.com\/knowledge-center\/plastic-drying-knowledge-center\/resin-drying-basics\/choosing-the-right-resin-moisture-analyzer\/\" class = \"hfe-menu-item\">Choosing the Right Resin Moisture Analyzer<\/a><\/li>\n<li id=\"menu-item-3338\" class=\"menu-item menu-item-type-custom menu-item-object-custom menu-item-has-children parent hfe-has-submenu hfe-creative-menu\"><div class=\"hfe-has-submenu-container\" tabindex=\"0\" role=\"button\" aria-haspopup=\"true\" aria-expanded=\"false\"><a aria-expanded=\"false\" href=\"#\" class = \"hfe-menu-item\">Resin Dryer Maintenance and Trouble Shooting<span class='hfe-menu-toggle sub-arrow hfe-menu-child-0'><i class='fa'><\/i><\/span><\/a><\/div>\n<ul class=\"sub-menu\">\n\t<li id=\"menu-item-1575\" class=\"menu-item menu-item-type-post_type menu-item-object-page hfe-creative-menu\"><a href=\"https:\/\/www.novatec.com\/knowledge-center\/plastic-drying-knowledge-center\/resin-dryer-maintenance\/\" class = \"hfe-sub-menu-item\">Resin Dryer Maintenance<\/a><\/li>\n\t<li id=\"menu-item-3110\" class=\"menu-item menu-item-type-post_type menu-item-object-page hfe-creative-menu\"><a href=\"https:\/\/www.novatec.com\/knowledge-center\/plastic-drying-knowledge-center\/resin-dryer-maintenance\/trouble-shooting-guide-for-wheel-dryers\/\" class = \"hfe-sub-menu-item\">Trouble Shooting Guide for Wheel Dryers<\/a><\/li>\n<\/ul>\n<\/li>\n<li id=\"menu-item-3054\" class=\"menu-item menu-item-type-custom menu-item-object-custom parent hfe-creative-menu\"><a href=\"https:\/\/www.novatec.com\/knowledge-center\/wp-content\/uploads\/2024\/08\/novatec-markhaynie-summerweather-whitepaper-final-1.pdf\" class = \"hfe-menu-item\">How to Optimize Resin Drying in Humid Weather<\/a><\/li>\n<li id=\"menu-item-3056\" class=\"menu-item menu-item-type-custom menu-item-object-custom parent hfe-creative-menu\"><a href=\"https:\/\/www.novatec.com\/knowledge-center\/wp-content\/uploads\/2024\/08\/Energy-Saving-Resin-Drying-Installations.pdf\" class = \"hfe-menu-item\">Energy Saving Tips for Resin Dryers<\/a><\/li>\n<li id=\"menu-item-1576\" class=\"menu-item menu-item-type-post_type menu-item-object-page parent hfe-creative-menu\"><a href=\"https:\/\/www.novatec.com\/knowledge-center\/plastic-drying-knowledge-center\/faqs\/\" class = \"hfe-menu-item\">Frequently Asked Questions<\/a><\/li>\n<\/ul> \n\t\t\t\t<\/nav>\n\t\t\t<\/div>\n\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t<div class=\"elementor-element elementor-element-bf8ab5c e-con-full e-flex e-con e-child\" data-id=\"bf8ab5c\" data-element_type=\"container\">\n\t\t<div class=\"elementor-element elementor-element-b228f1b e-con-full e-flex e-con e-child\" data-id=\"b228f1b\" data-element_type=\"container\">\n\t\t<div class=\"elementor-element elementor-element-45bbf5a e-con-full e-flex e-con e-child\" data-id=\"45bbf5a\" data-element_type=\"container\" data-settings=\"{&quot;background_background&quot;:&quot;classic&quot;}\">\n\t\t<div class=\"elementor-element elementor-element-72ea7d4 e-flex e-con-boxed e-con e-child\" data-id=\"72ea7d4\" data-element_type=\"container\">\n\t\t\t\t\t<div class=\"e-con-inner\">\n\t\t<div class=\"elementor-element elementor-element-80f0c1d e-con-full e-flex e-con e-child\" data-id=\"80f0c1d\" data-element_type=\"container\">\n\t\t<div class=\"elementor-element elementor-element-666e22c e-con-full e-flex e-con e-child\" data-id=\"666e22c\" data-element_type=\"container\">\n\t\t\t\t<div class=\"elementor-element elementor-element-d37472c elementor-widget elementor-widget-text-editor\" data-id=\"d37472c\" data-element_type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<p>RESIN DRYING<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-f0f97f5 elementor-widget elementor-widget-heading\" data-id=\"f0f97f5\" data-element_type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<h1 class=\"elementor-heading-title elementor-size-default\">What Is Fick's Law, and What Does It Have to Do With Drying Plastic?<\/h1>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-a3d0ad7 elementor-widget elementor-widget-text-editor\" data-id=\"a3d0ad7\" data-element_type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<p>By <strong>Mark Haynie<\/strong> and <strong>Joshua Belisle<\/strong> \u00b7 Edited by Dana Gardner \u00b7 Technically reviewed by Mark Haynie<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t<div class=\"elementor-element elementor-element-5e3c7e9 e-con-full e-flex e-con e-child\" data-id=\"5e3c7e9\" data-element_type=\"container\" data-settings=\"{&quot;background_background&quot;:&quot;classic&quot;}\">\n\t\t\t\t<div class=\"elementor-element elementor-element-f2bf2fe elementor-widget elementor-widget-text-editor\" data-id=\"f2bf2fe\" data-element_type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<p><strong>Short answer.<\/strong> Fick&#8217;s Second Law (1855) describes how a substance spreads through a material over time: \u2202C\/\u2202t = D \u00b7 \u2207\u00b2C. In resin drying, C is the water concentration inside the pellet and D is the diffusion coefficient, the rate at which water can move through the polymer. D rises exponentially with temperature; a 30\u00b0F drop in drying temperature can cut it by 40 to 60 percent. It does not respond to pressure outside the pellet. That is why temperature is the lever in drying, why Nylon at 160 to 180\u00b0F needs hours rather than minutes, why a fixed timer cannot land resin that arrives at different moisture levels on the same endpoint, and why a sealed sample re-measured after at least 20 to 30 minutes tells you whether the core is actually dry.<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-682319b elementor-widget elementor-widget-image\" data-id=\"682319b\" data-element_type=\"widget\" data-widget_type=\"image.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<img fetchpriority=\"high\" decoding=\"async\" width=\"1200\" height=\"675\" src=\"https:\/\/www.novatec.com\/knowledge-center\/wp-content\/uploads\/2026\/10\/kc-oct21-pellet-moisture-diffusion-cross-section.webp\" class=\"attachment-full size-full wp-image-6697\" alt=\"Cross-section of a plastic pellet with moisture concentrated in the core and diffusing toward the surface\" srcset=\"https:\/\/www.novatec.com\/knowledge-center\/wp-content\/uploads\/2026\/10\/kc-oct21-pellet-moisture-diffusion-cross-section.webp 1200w, https:\/\/www.novatec.com\/knowledge-center\/wp-content\/uploads\/2026\/10\/kc-oct21-pellet-moisture-diffusion-cross-section-300x169.webp 300w, https:\/\/www.novatec.com\/knowledge-center\/wp-content\/uploads\/2026\/10\/kc-oct21-pellet-moisture-diffusion-cross-section-1024x576.webp 1024w, https:\/\/www.novatec.com\/knowledge-center\/wp-content\/uploads\/2026\/10\/kc-oct21-pellet-moisture-diffusion-cross-section-768x432.webp 768w\" sizes=\"(max-width: 1200px) 100vw, 1200px\" \/>\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-44e356d elementor-widget elementor-widget-text-editor\" data-id=\"44e356d\" data-element_type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<p>If you have read anything about resin drying recently, you have probably encountered the word &#8220;diffusion.&#8221; It gets invoked often in discussions about why certain drying methods work and others fall short for engineering resins. But diffusion is rarely explained. It is treated as a given that everyone understands, when most people in plastics processing have never had a reason to dig into what it actually means.<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-fc67304 elementor-widget elementor-widget-text-editor\" data-id=\"fc67304\" data-element_type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<p>Understanding diffusion, and the law that governs it, changes how you think about resin drying. It clarifies why heat is the critical variable, why time cannot be compressed beyond a certain point, why pressure outside the pellet has limited effect on what happens inside it, and why controlled dry air at the pellet surface is not just a nice-to-have but a physical requirement for complete drying of hygroscopic engineering resins. This article is the equation behind <a href=\"https:\/\/www.novatec.com\/knowledge-center\/plastic-drying-knowledge-center\/resin-drying-basics\/how-moisture-leaves-a-plastic-pellet\/\">How Moisture Leaves a Plastic Pellet<\/a>, which covers the same mechanism with drying-time data.<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t<div class=\"elementor-element elementor-element-47fdfec e-con-full e-flex e-con e-child\" data-id=\"47fdfec\" data-element_type=\"container\">\n\t\t\t\t<div class=\"elementor-element elementor-element-2aaf8f4 elementor-widget elementor-widget-heading\" data-id=\"2aaf8f4\" data-element_type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<h2 class=\"elementor-heading-title elementor-size-default\">What Diffusion Actually Is<\/h2>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-474fda7 elementor-widget elementor-widget-image\" data-id=\"474fda7\" data-element_type=\"widget\" data-widget_type=\"image.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<img decoding=\"async\" width=\"1536\" height=\"1024\" src=\"https:\/\/www.novatec.com\/knowledge-center\/wp-content\/uploads\/2026\/10\/kc-oct21-resin-pellet-surface-vs-internal-moisture.png\" class=\"attachment-full size-full wp-image-6698\" alt=\"Resin pellets with surface moisture compared with moisture held inside the pellet\" srcset=\"https:\/\/www.novatec.com\/knowledge-center\/wp-content\/uploads\/2026\/10\/kc-oct21-resin-pellet-surface-vs-internal-moisture.png 1536w, https:\/\/www.novatec.com\/knowledge-center\/wp-content\/uploads\/2026\/10\/kc-oct21-resin-pellet-surface-vs-internal-moisture-300x200.png 300w, https:\/\/www.novatec.com\/knowledge-center\/wp-content\/uploads\/2026\/10\/kc-oct21-resin-pellet-surface-vs-internal-moisture-1024x683.png 1024w, https:\/\/www.novatec.com\/knowledge-center\/wp-content\/uploads\/2026\/10\/kc-oct21-resin-pellet-surface-vs-internal-moisture-768x512.png 768w\" sizes=\"(max-width: 1536px) 100vw, 1536px\" \/>\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-7954fa3 elementor-widget elementor-widget-text-editor\" data-id=\"7954fa3\" data-element_type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<p>Diffusion is the process by which molecules move from an area of higher concentration toward an area of lower concentration. It happens spontaneously: no pump, no pressure, no mechanical force required. The driving force is simply the concentration difference itself, called a gradient. Where there is more of something in one place than another, molecules will tend to move toward equalization.<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-f015aaf elementor-widget elementor-widget-text-editor\" data-id=\"f015aaf\" data-element_type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<p>You see diffusion constantly. A drop of dye spreading through water. A scent moving through a room. Salt dissolving into a liquid. In each case, molecules are migrating from where they are concentrated toward where they are less concentrated, not because anything is pulling them, but because random molecular motion statistically moves them toward equilibrium over time.<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-5bfd1bd elementor-widget elementor-widget-text-editor\" data-id=\"5bfd1bd\" data-element_type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<p>In resin drying, the molecules in question are water molecules. In hygroscopic engineering resins such as Nylon, Polycarbonate, PET, PBT, TPU and PC\/ABS, water does not just sit on the pellet surface. It bonds within the polymer matrix, distributed throughout the interior of the pellet. Getting that water out requires it to migrate from inside the pellet, where moisture concentration is high, toward the pellet surface, where the surrounding dry air maintains a low moisture concentration. Diffusion is how it gets there.<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t<div class=\"elementor-element elementor-element-f03eae7 e-con-full e-flex e-con e-child\" data-id=\"f03eae7\" data-element_type=\"container\">\n\t\t\t\t<div class=\"elementor-element elementor-element-7f62e73 elementor-widget elementor-widget-heading\" data-id=\"7f62e73\" data-element_type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<h2 class=\"elementor-heading-title elementor-size-default\">Fick's Second Law: The Equation That Governs the Process<\/h2>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-55239c5 elementor-widget elementor-widget-text-editor\" data-id=\"55239c5\" data-element_type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<p>In 1855, Adolf Fick quantified how diffusion works in a medium. His Second Law describes how the concentration of a diffusing substance changes over time within that medium:<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-79f6142 elementor-widget elementor-widget-text-editor\" data-id=\"79f6142\" data-element_type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<p>\u2202C\/\u2202t = D \u00b7 \u2207\u00b2C<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-ce9ba21 elementor-widget elementor-widget-text-editor\" data-id=\"ce9ba21\" data-element_type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<p>In plain language: the rate at which moisture concentration changes at any point inside the pellet depends on the diffusion coefficient D and the spatial distribution of moisture concentration throughout the pellet.<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-648d126 elementor-widget elementor-widget-text-editor\" data-id=\"648d126\" data-element_type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<p>The formula looks abstract, but its implications for resin drying are concrete.<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-9e46deb elementor-widget elementor-widget-text-editor\" data-id=\"9e46deb\" data-element_type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<p><strong>First:<\/strong> moisture removal from the pellet interior is a time-dependent process. The concentration at any given point inside the pellet can only change as fast as diffusion allows, and diffusion through a solid polymer matrix is not instantaneous. The center of the pellet cannot be dried in the same moment the surface is dried. The moisture at the core must migrate outward through the polymer, step by step, molecule by molecule, until it reaches the surface where it can be carried away.<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-42e9dca elementor-widget elementor-widget-text-editor\" data-id=\"42e9dca\" data-element_type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<p><strong>Second:<\/strong> the rate of that process is determined by D, the diffusion coefficient. And D is not a fixed number. It changes dramatically based on conditions. Which brings us to the most important variable in the entire equation.<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t<div class=\"elementor-element elementor-element-beb9c8e e-con-full e-flex e-con e-child\" data-id=\"beb9c8e\" data-element_type=\"container\">\n\t\t\t\t<div class=\"elementor-element elementor-element-a511616 elementor-widget elementor-widget-image\" data-id=\"a511616\" data-element_type=\"widget\" data-widget_type=\"image.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<img decoding=\"async\" width=\"1200\" height=\"675\" src=\"https:\/\/www.novatec.com\/knowledge-center\/wp-content\/uploads\/2026\/10\/kc-oct21-moisture_profile_across_pellet.webp\" class=\"attachment-full size-full wp-image-6699\" alt=\"Moisture profile across a resin pellet as drying proceeds: the surface dries first and the core last\" srcset=\"https:\/\/www.novatec.com\/knowledge-center\/wp-content\/uploads\/2026\/10\/kc-oct21-moisture_profile_across_pellet.webp 1200w, https:\/\/www.novatec.com\/knowledge-center\/wp-content\/uploads\/2026\/10\/kc-oct21-moisture_profile_across_pellet-300x169.webp 300w, https:\/\/www.novatec.com\/knowledge-center\/wp-content\/uploads\/2026\/10\/kc-oct21-moisture_profile_across_pellet-1024x576.webp 1024w, https:\/\/www.novatec.com\/knowledge-center\/wp-content\/uploads\/2026\/10\/kc-oct21-moisture_profile_across_pellet-768x432.webp 768w\" sizes=\"(max-width: 1200px) 100vw, 1200px\" \/>\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-63325fc elementor-widget elementor-widget-text-editor\" data-id=\"63325fc\" data-element_type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<figcaption>Figure 1. What Fick&#8217;s Second Law describes: the moisture profile across a pellet as drying proceeds. The surface dries first, the core last, and the shape of each curve is set by the diffusion coefficient. Schematic, not measured data.<\/figcaption>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t<div class=\"elementor-element elementor-element-ffbcb65 e-con-full e-flex e-con e-child\" data-id=\"ffbcb65\" data-element_type=\"container\">\n\t\t\t\t<div class=\"elementor-element elementor-element-bb7e8ee elementor-widget elementor-widget-heading\" data-id=\"bb7e8ee\" data-element_type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<h2 class=\"elementor-heading-title elementor-size-default\">The Arrhenius Relationship: Why Temperature Is the Lever<\/h2>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-0a5a8dc elementor-widget elementor-widget-image\" data-id=\"0a5a8dc\" data-element_type=\"widget\" data-widget_type=\"image.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<img loading=\"lazy\" decoding=\"async\" width=\"1536\" height=\"1024\" src=\"https:\/\/www.novatec.com\/knowledge-center\/wp-content\/uploads\/2026\/10\/kc-oct21-moisture-diffusion-core-to-surface.png\" class=\"attachment-full size-full wp-image-6700\" alt=\"Moisture migrating from the core of a resin pellet to its surface, driven by heat\" srcset=\"https:\/\/www.novatec.com\/knowledge-center\/wp-content\/uploads\/2026\/10\/kc-oct21-moisture-diffusion-core-to-surface.png 1536w, https:\/\/www.novatec.com\/knowledge-center\/wp-content\/uploads\/2026\/10\/kc-oct21-moisture-diffusion-core-to-surface-300x200.png 300w, https:\/\/www.novatec.com\/knowledge-center\/wp-content\/uploads\/2026\/10\/kc-oct21-moisture-diffusion-core-to-surface-1024x683.png 1024w, https:\/\/www.novatec.com\/knowledge-center\/wp-content\/uploads\/2026\/10\/kc-oct21-moisture-diffusion-core-to-surface-768x512.png 768w\" sizes=\"(max-width: 1536px) 100vw, 1536px\" \/>\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-d8370f2 elementor-widget elementor-widget-text-editor\" data-id=\"d8370f2\" data-element_type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<p>The diffusion coefficient D follows what is called an Arrhenius relationship with temperature:<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-76de062 elementor-widget elementor-widget-text-editor\" data-id=\"76de062\" data-element_type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<p>D = D\u2080 \u00b7 e<sup>(\u2212Ea \/ RT)<\/sup><\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-42b2fb1 elementor-widget elementor-widget-text-editor\" data-id=\"42b2fb1\" data-element_type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<p>Where Ea is the activation energy for diffusion, R is the gas constant, and T is the absolute temperature. The critical word in that equation is the exponential. This is not a linear relationship. A modest change in temperature produces a dramatic change in the diffusion rate.<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-bdb8af7 elementor-widget elementor-widget-text-editor\" data-id=\"bdb8af7\" data-element_type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<p>What this means practically: reducing drying temperature by 30\u00b0F does not save 10 percent of drying effort. It can reduce the diffusion coefficient by 40 to 60 percent, depending on the resin. The moisture inside the pellet moves far more slowly at lower temperatures. The time required to reach equilibrium moisture extends dramatically, or, if the cycle is fixed, the pellet simply does not finish drying within the available time.<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-f6883cd elementor-widget elementor-widget-text-editor\" data-id=\"f6883cd\" data-element_type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<p>This is why temperature is the primary lever in resin drying. Not pressure. Not airflow alone. Not cycle time management. Temperature governs how fast moisture can physically migrate through the polymer matrix. Everything else is secondary to that fundamental relationship.<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-9046d2a elementor-widget elementor-widget-text-editor\" data-id=\"9046d2a\" data-element_type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<p>This is also why Nylon presents such a demanding drying challenge. Its recommended drying temperature of 160 to 180\u00b0F is deliberately low; higher temperatures cause yellowing and thermal degradation in the hopper. But that relatively low temperature means the diffusion coefficient is operating at the less efficient end of its range. Internal moisture migrates slowly. Nylon is one of the hardest resins to dry completely not because of anything unique about its chemistry but because its safe drying temperature keeps diffusion inherently slow, which is why it needs hours of sustained drying under proper conditions, not minutes. Nylon also arrives carrying far more water than most engineering resins do, so there is simply more of it to move at that slow rate.<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t<div class=\"elementor-element elementor-element-eea1c8f e-con-full e-flex e-con e-child\" data-id=\"eea1c8f\" data-element_type=\"container\">\n\t\t\t\t<div class=\"elementor-element elementor-element-eedb624 elementor-widget elementor-widget-heading\" data-id=\"eedb624\" data-element_type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<h2 class=\"elementor-heading-title elementor-size-default\">Why the Outside of the Pellet Doesn't Tell You About the Inside<\/h2>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-86b9af9 elementor-widget elementor-widget-text-editor\" data-id=\"86b9af9\" data-element_type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<p>Fick&#8217;s Law makes clear why surface moisture readings can be misleading after incomplete drying. Diffusion from the core of the pellet to the surface takes time. When a drying process aggressively removes surface moisture, whether through hot air, vacuum, or any other mechanism, it can create a steep moisture gradient inside the pellet: very dry at the surface, still significantly wet at the core.<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-60737cf elementor-widget elementor-widget-text-editor\" data-id=\"60737cf\" data-element_type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<p>If you measure moisture at that moment, you measure the surface. The core moisture has not reached the surface yet. The reading looks encouraging. The pellet is not dry.<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-0ab1f31 elementor-widget elementor-widget-text-editor\" data-id=\"0ab1f31\" data-element_type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<p>After the drying process ends, diffusion does not stop. The internal gradient is still present: lower moisture at the surface, higher moisture inside. Fick&#8217;s Law says that gradient will continue driving moisture outward. Which means the moisture reading taken at discharge is not the final state of the pellet. It is a point-in-time reading on a pellet that is still internally redistributing moisture. Take that same reading 20 to 30 minutes later and it will often be higher, a phenomenon called moisture rebound, and direct physical evidence of incomplete drying.<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-28889f1 elementor-widget elementor-widget-text-editor\" data-id=\"28889f1\" data-element_type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<p>This is the basis of <a href=\"https:\/\/www.novatec.com\/knowledge-center\/plastic-drying-knowledge-center\/resin-drying-basics\/the-moisture-rebound-test\/\">the moisture rebound test<\/a>. A pellet at true moisture equilibrium, fully dried throughout its cross-section, will show a stable moisture reading after a sealed wait. There is no internal gradient left to equalize. A pellet that was surface-dried but core-wet will show a rising reading as internal moisture continues its outward migration. Fick&#8217;s Law predicts this behavior exactly.<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t<div class=\"elementor-element elementor-element-6f4f804 e-con-full e-flex e-con e-child\" data-id=\"6f4f804\" data-element_type=\"container\">\n\t\t\t\t<div class=\"elementor-element elementor-element-9554a04 elementor-widget elementor-widget-heading\" data-id=\"9554a04\" data-element_type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<h2 class=\"elementor-heading-title elementor-size-default\">Why Pressure Outside the Pellet Has Limited Effect on D<\/h2>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-49f5f04 elementor-widget elementor-widget-image\" data-id=\"49f5f04\" data-element_type=\"widget\" data-widget_type=\"image.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<img loading=\"lazy\" decoding=\"async\" width=\"1536\" height=\"1024\" src=\"https:\/\/www.novatec.com\/knowledge-center\/wp-content\/uploads\/2026\/10\/kc-oct21-hybrid-hot-air-vacuum-dryer-stages.png\" class=\"attachment-full size-full wp-image-6701\" alt=\"Stages of a hybrid hot-air and vacuum resin dryer: heating hopper, vacuum chamber and retention hopper\" srcset=\"https:\/\/www.novatec.com\/knowledge-center\/wp-content\/uploads\/2026\/10\/kc-oct21-hybrid-hot-air-vacuum-dryer-stages.png 1536w, https:\/\/www.novatec.com\/knowledge-center\/wp-content\/uploads\/2026\/10\/kc-oct21-hybrid-hot-air-vacuum-dryer-stages-300x200.png 300w, https:\/\/www.novatec.com\/knowledge-center\/wp-content\/uploads\/2026\/10\/kc-oct21-hybrid-hot-air-vacuum-dryer-stages-1024x683.png 1024w, https:\/\/www.novatec.com\/knowledge-center\/wp-content\/uploads\/2026\/10\/kc-oct21-hybrid-hot-air-vacuum-dryer-stages-768x512.png 768w\" sizes=\"(max-width: 1536px) 100vw, 1536px\" \/>\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-69a4b08 elementor-widget elementor-widget-text-editor\" data-id=\"69a4b08\" data-element_type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<p>One of the implications of Fick&#8217;s Law that matters most in current drying discussions is this: the diffusion coefficient D is a function of temperature, material properties, and pellet geometry. It is not meaningfully a function of external pressure.<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-d925f02 elementor-widget elementor-widget-text-editor\" data-id=\"d925f02\" data-element_type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<p>Reducing the atmospheric pressure around a pellet does not change what is happening inside the solid polymer matrix. The pellet does not know or respond to the pressure outside it. Internal moisture still has to migrate from the core to the surface through the polymer, at a rate still governed by temperature and the Arrhenius relationship. It helps to be precise about what vacuum does. Water dissolved in a hygroscopic polymer has no liquid phase, so it does not boil. Vacuum works by pushing the water-vapor pressure at the pellet surface close to zero, which is the same job \u221240\u00b0F dewpoint air does. That makes moisture already at the surface leave quickly. It cannot reach inside the solid and accelerate the diffusion that is still occurring through the polymer matrix.<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-aba4175 elementor-widget elementor-widget-text-editor\" data-id=\"aba4175\" data-element_type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<p>This is the fundamental reason why the short, unheated vacuum finishing step in a hybrid hot-air\/vacuum dryer has limited effect on lower-temperature hygroscopic engineering resins. The hard part of drying those resins was never surface moisture removal. It was the slow internal diffusion that low drying temperatures create. And because the vacuum step adds no heat, the pellets cool during it, which lowers D in the very stage meant to finish the drying. Lowering the pressure outside the pellet answers a question those resins were not asking.<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-bcfecb3 elementor-widget elementor-widget-text-editor\" data-id=\"bcfecb3\" data-element_type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<p>For a full technical comparison of vacuum-assist and desiccant drying across engineering resin types, see <a href=\"https:\/\/www.novatec.com\/knowledge-center\/plastic-drying-knowledge-center\/resin-dryer-technologies\/compressed-air-resin-dryers\/the-science-of-vacuum-and-desiccant-drying-for-engineering-plastics\/\">The Science of Vacuum and Desiccant Drying for Engineering Plastics<\/a>.<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t<div class=\"elementor-element elementor-element-ed54e02 e-con-full e-flex e-con e-child\" data-id=\"ed54e02\" data-element_type=\"container\">\n\t\t\t\t<div class=\"elementor-element elementor-element-9ade363 elementor-widget elementor-widget-heading\" data-id=\"9ade363\" data-element_type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<h2 class=\"elementor-heading-title elementor-size-default\">Why Desiccated Air Fits Into the Fick's Law Framework<\/h2>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-3b25cbc elementor-widget elementor-widget-text-editor\" data-id=\"3b25cbc\" data-element_type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<p>Fick&#8217;s Law says diffusion is driven by a concentration gradient: moisture moving from high concentration inside the pellet toward lower concentration outside. For that gradient to remain active throughout the entire drying cycle, the environment outside the pellet has to stay dry.<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-f636c51 elementor-widget elementor-widget-text-editor\" data-id=\"f636c51\" data-element_type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<p>This is where desiccated air earns its place. Controlled dry air at a consistent low dewpoint, typically \u221240\u00b0F or lower, maintains the lowest possible moisture concentration at the pellet surface throughout the entire residence time. That sustained low-moisture environment keeps the vapor pressure gradient open and active, continuously pulling moisture outward as fast as diffusion can deliver it to the surface.<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-dc4758b elementor-widget elementor-widget-text-editor\" data-id=\"dc4758b\" data-element_type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<p>If the surrounding air is humid, ambient air on a summer day for example, the moisture concentration outside the pellet rises. The gradient weakens. Diffusion slows, not because the temperature changed, but because the driving force at the boundary weakened. Fick&#8217;s Law predicts this directly: the rate of moisture movement depends on the concentration difference, and if the outside concentration rises, the rate falls.<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-5cea7f2 elementor-widget elementor-widget-text-editor\" data-id=\"5cea7f2\" data-element_type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<p>Desiccation is the mechanism that prevents that from happening. It maintains the outside condition at a known, controlled, consistently low level regardless of what the ambient air is doing, giving Fick&#8217;s Law the boundary conditions it needs to complete the job.<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-dd334cf elementor-widget elementor-widget-text-editor\" data-id=\"dd334cf\" data-element_type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<p>Related reading: <a href=\"https:\/\/www.novatec.com\/knowledge-center\/plastic-drying-knowledge-center\/resin-drying-basics\/understanding-dew-point-in-resin-drying\/\">Understanding Dew Point in Resin Drying<\/a> \u00b7 <a href=\"https:\/\/www.novatec.com\/knowledge-center\/plastic-drying-knowledge-center\/resin-dryer-technologies\/what-is-desiccant-regeneration\/\">What Is Desiccant Regeneration, and Does It Make Desiccant Dryers Energy Hogs?<\/a><\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t<div class=\"elementor-element elementor-element-287cb21 e-con-full e-flex e-con e-child\" data-id=\"287cb21\" data-element_type=\"container\">\n\t\t\t\t<div class=\"elementor-element elementor-element-cb7301f elementor-widget elementor-widget-heading\" data-id=\"cb7301f\" data-element_type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<h2 class=\"elementor-heading-title elementor-size-default\">A Note on Alternative Energy Delivery<\/h2>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-adc88c1 elementor-widget elementor-widget-text-editor\" data-id=\"adc88c1\" data-element_type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<p>Fick&#8217;s Law governs diffusion driven by conventional heating of the pellet mass, which is how hot air drying and desiccant drying both work. It is worth acknowledging that other energy delivery mechanisms exist. Infrared and microwave technologies, for example, can deposit energy directly into the interior of the pellet rather than waiting for heat to conduct inward from the surface. Under those conditions, the interior of the pellet can reach drying temperature very quickly, potentially in minutes rather than hours, because the energy delivery mechanism itself bypasses the thermal conduction lag that makes conventional drying slow at the core.<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-e2dc703 elementor-widget elementor-widget-text-editor\" data-id=\"e2dc703\" data-element_type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<p>These technologies are real and in some specialized industrial applications they work. The practical constraints, equipment scale, capital cost, material handling complexity, and the requirement that pellets move continuously through an energy field without hotspots or melting, mean they are not yet widely available at a practical production-scale cost for most processors. But they are a legitimate avenue for reducing drying time without shortcutting the diffusion physics, because they change D by changing the temperature of the pellet interior directly, rather than trying to work around D by reducing external pressure.<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-df9bf47 elementor-widget elementor-widget-text-editor\" data-id=\"df9bf47\" data-element_type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<p>What does not work is a mechanism that tries to accelerate internal moisture removal without changing pellet temperature. Fick&#8217;s Law does not offer that shortcut. Temperature is the lever. Time is the requirement. The gradient is what sustains the process. Every practically available drying method for solid pellets works within those constraints or pays the penalty downstream.<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t<div class=\"elementor-element elementor-element-9de5698 e-con-full e-flex e-con e-child\" data-id=\"9de5698\" data-element_type=\"container\" data-settings=\"{&quot;background_background&quot;:&quot;classic&quot;}\">\n\t\t\t\t<div class=\"elementor-element elementor-element-01a4b65 elementor-widget elementor-widget-text-editor\" data-id=\"01a4b65\" data-element_type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<p><strong>How we know this:<\/strong> Fick&#8217;s Second Law and the Arrhenius dependence of the diffusion coefficient are established physics, confirmed for polymer molding compounds in NASA&#8217;s electronic-parts moisture studies; the drying-temperature and rebound figures are Novatec drying engineering field practice, checked in the <a href=\"https:\/\/www.novatec.com\/resin-proving-ground\/\">Resin Proving Ground<\/a>.<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t<div class=\"elementor-element elementor-element-8c30732 e-con-full e-flex e-con e-child\" data-id=\"8c30732\" data-element_type=\"container\">\n\t\t\t\t<div class=\"elementor-element elementor-element-3af2f8e elementor-widget elementor-widget-heading\" data-id=\"3af2f8e\" data-element_type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<h2 class=\"elementor-heading-title elementor-size-default\">What This Means for Your Drying Process<\/h2>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-99472f8 elementor-widget elementor-widget-text-editor\" data-id=\"99472f8\" data-element_type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<p>Fick&#8217;s Law provides a simple, physics-based checklist for evaluating whether your drying process is actually completing the job.<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-ec833bd elementor-widget elementor-widget-text-editor\" data-id=\"ec833bd\" data-element_type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<p><strong>Is the temperature correct?<\/strong> Not just the inlet air temperature, but the actual temperature the pellet reaches and sustains throughout its residence time. At the correct temperature, the diffusion coefficient is large enough for moisture to migrate outward within the available time. Below the correct temperature, the coefficient drops exponentially and the physics work against you.<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-186d833 elementor-widget elementor-widget-text-editor\" data-id=\"186d833\" data-element_type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<p><strong>Is residence time adequate?<\/strong> Given the diffusion coefficient at your drying temperature, the pellet geometry, and the starting moisture level, there is a minimum time required for internal moisture to reach the surface. That time cannot be arbitrarily compressed without consequence. For Nylon at typical drying temperatures, that time is measured in hours, not minutes.<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-4ec55b8 elementor-widget elementor-widget-text-editor\" data-id=\"4ec55b8\" data-element_type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<p><strong>Is the moisture gradient sustained?<\/strong> The dry air surrounding the pellet must stay at a low dewpoint throughout the entire residence time: not just at startup, not just at peak performance, but continuously. Any drift in dewpoint weakens the driving force and slows or stalls diffusion at exactly the moment it needs to be completing.<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-1b9408e elementor-widget elementor-widget-text-editor\" data-id=\"1b9408e\" data-element_type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<p><strong>Do you know the starting moisture?<\/strong> Fick&#8217;s Law removes a fraction of the moisture in a given time, not a fixed number of ppm. Resin that arrives at 8,000 ppm and resin that arrives at 1,500 ppm cannot reach the same endpoint in the same cycle at the same temperature. A fixed timer is drying blind. Measuring incoming moisture is what turns a recipe into a process.<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-1110bf1 elementor-widget elementor-widget-text-editor\" data-id=\"1110bf1\" data-element_type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<p><strong>Is the resin actually dry, or just surface-dry?<\/strong> The rebound test answers this directly: verify after the moisture settles. A stable reading after a sealed hold of at least 20 to 30 minutes confirms the pellet is at moisture equilibrium. A rising reading confirms diffusion is still running outward from a wet core, which means the drying process did not finish the job.<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t<div class=\"elementor-element elementor-element-df6e688 e-con-full e-flex e-con e-child\" data-id=\"df6e688\" data-element_type=\"container\" data-settings=\"{&quot;background_background&quot;:&quot;classic&quot;}\">\n\t\t<div class=\"elementor-element elementor-element-44b56e6 e-flex e-con-boxed e-con e-child\" data-id=\"44b56e6\" data-element_type=\"container\">\n\t\t\t\t\t<div class=\"e-con-inner\">\n\t\t\t\t<div class=\"elementor-element elementor-element-ab02919 elementor-widget elementor-widget-heading\" data-id=\"ab02919\" data-element_type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<h2 class=\"elementor-heading-title elementor-size-default\">How Novatec Approaches It<\/h2>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-bb96da6 elementor-widget elementor-widget-image\" data-id=\"bb96da6\" data-element_type=\"widget\" data-widget_type=\"image.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<img decoding=\"async\" src=\"https:\/\/www.novatec.com\/knowledge-center\/wp-content\/uploads\/2026\/06\/ND3-25.png\" title=\"\" alt=\"Novatec NovaDrier desiccating cartridge dryer with drying hopper and control panel\" loading=\"lazy\" \/>\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-d84ccb5 elementor-widget elementor-widget-text-editor\" data-id=\"d84ccb5\" data-element_type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<p>At Novatec, we believe a dryer&#8217;s job is to give Fick&#8217;s Law what it asks for: the right temperature at every pellet, enough time, and a dry boundary that never drifts. So we built two drying systems around those three requirements.<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-11a4c80 elementor-widget elementor-widget-text-editor\" data-id=\"11a4c80\" data-element_type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<p>For machine-side and portable drying up to 100 lb\/hr, the <a href=\"https:\/\/www.novatec.com\/product\/drying\/desiccating-cartridge-dryers\/\">NovaDrier<\/a> Desiccating Cartridge Dryer holds the boundary with a Desiccating Cartridge that is guaranteed for the life of the dryer and delivers \u221240\u00b0F or lower dew points, and holds the temperature with patented Dual Drying Zones that keep the upper bed at drying temperature as well as the lower one, so pellets at the top of the hopper get the same heat and dry air as pellets at the bottom. For central drying systems up to 5,000 lb\/hr, the <a href=\"https:\/\/www.novatec.com\/product\/drying\/desiccant-wheel\/novawheel\/\">NovaWheel<\/a> desiccant wheel dryer delivers continuous low dew points from a molecular sieve desiccant bonded to the wheel: no loose beads, no desiccant dust, and up to 15 years of wheel life.<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-a60b513 elementor-widget elementor-widget-text-editor\" data-id=\"a60b513\" data-element_type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<p>When the physics are right, the resin is right. When the resin is right, the parts are right. Adolf Fick worked out the math in 1855. The dryer just has to execute it.<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-98f6874 elementor-widget elementor-widget-text-editor\" data-id=\"98f6874\" data-element_type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<p>Want to talk through drying times for the resins you run? Give us a holler on the form below.<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-9dead90 elementor-widget elementor-widget-text-editor\" data-id=\"9dead90\" data-element_type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<p>No sales pitch. No pressure. Just a conversation about what&#8217;s best for your operation.<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-9efde2c elementor-button-align-stretch elementor-widget elementor-widget-form\" data-id=\"9efde2c\" data-element_type=\"widget\" data-settings=\"{&quot;step_next_label&quot;:&quot;Next&quot;,&quot;step_previous_label&quot;:&quot;Previous&quot;,&quot;button_width&quot;:&quot;100&quot;,&quot;step_type&quot;:&quot;number_text&quot;,&quot;step_icon_shape&quot;:&quot;circle&quot;}\" data-widget_type=\"form.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t<form class=\"elementor-form\" method=\"post\" name=\"Ask the Expert Drying\" aria-label=\"Ask the Expert Drying\">\n\t\t\t<input type=\"hidden\" name=\"post_id\" value=\"6695\"\/>\n\t\t\t<input type=\"hidden\" name=\"form_id\" value=\"9efde2c\"\/>\n\t\t\t<input type=\"hidden\" name=\"referer_title\" value=\"Plastic Knowledge Center\" \/>\n\n\t\t\t\n\t\t\t<div class=\"elementor-form-fields-wrapper elementor-labels-above\">\n\t\t\t\t\t\t\t\t<div class=\"elementor-field-type-text elementor-field-group elementor-column elementor-field-group-name elementor-col-100 elementor-field-required elementor-mark-required\">\n\t\t\t\t\t\t\t\t\t\t\t\t<label for=\"form-field-name\" class=\"elementor-field-label\">\n\t\t\t\t\t\t\t\tName\t\t\t\t\t\t\t<\/label>\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t<input size=\"1\" type=\"text\" name=\"form_fields[name]\" id=\"form-field-name\" class=\"elementor-field elementor-size-sm  elementor-field-textual\" placeholder=\"Name\" required=\"required\">\n\t\t\t\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t\t\t\t\t<div class=\"elementor-field-type-email elementor-field-group elementor-column elementor-field-group-email elementor-col-100 elementor-field-required elementor-mark-required\">\n\t\t\t\t\t\t\t\t\t\t\t\t<label for=\"form-field-email\" class=\"elementor-field-label\">\n\t\t\t\t\t\t\t\tEmail\t\t\t\t\t\t\t<\/label>\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t<input size=\"1\" type=\"email\" name=\"form_fields[email]\" id=\"form-field-email\" class=\"elementor-field elementor-size-sm  elementor-field-textual\" placeholder=\"Email\" required=\"required\">\n\t\t\t\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t\t\t\t\t<div class=\"elementor-field-type-textarea elementor-field-group elementor-column elementor-field-group-message elementor-col-100 elementor-field-required elementor-mark-required\">\n\t\t\t\t\t\t\t\t\t\t\t\t<label for=\"form-field-message\" class=\"elementor-field-label\">\n\t\t\t\t\t\t\t\tMessage\t\t\t\t\t\t\t<\/label>\n\t\t\t\t\t\t<textarea class=\"elementor-field-textual elementor-field  elementor-size-sm\" name=\"form_fields[message]\" id=\"form-field-message\" rows=\"4\" placeholder=\"Message\" required=\"required\"><\/textarea>\t\t\t\t<\/div>\n\t\t\t\t\t\t\t\t<div class=\"elementor-field-type-hidden elementor-field-group elementor-column elementor-field-group-user_info elementor-col-100\">\n\t\t\t\t\t\t\t\t\t\t\t\t\t<input size=\"1\" type=\"hidden\" name=\"form_fields[user_info]\" id=\"form-field-user_info\" class=\"elementor-field elementor-size-sm  elementor-field-textual\">\n\t\t\t\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t\t\t\t\t<div class=\"elementor-field-type-hidden elementor-field-group elementor-column elementor-field-group-utm_source elementor-col-100\">\n\t\t\t\t\t\t\t\t\t\t\t\t\t<input size=\"1\" type=\"hidden\" name=\"form_fields[utm_source]\" id=\"form-field-utm_source\" class=\"elementor-field elementor-size-sm  elementor-field-textual\">\n\t\t\t\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t\t\t\t\t<div class=\"elementor-field-type-hidden elementor-field-group elementor-column elementor-field-group-utm_medium elementor-col-100\">\n\t\t\t\t\t\t\t\t\t\t\t\t\t<input size=\"1\" type=\"hidden\" name=\"form_fields[utm_medium]\" id=\"form-field-utm_medium\" class=\"elementor-field elementor-size-sm  elementor-field-textual\">\n\t\t\t\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t\t\t\t\t<div class=\"elementor-field-type-hidden elementor-field-group elementor-column elementor-field-group-utm_campaign elementor-col-100\">\n\t\t\t\t\t\t\t\t\t\t\t\t\t<input size=\"1\" type=\"hidden\" name=\"form_fields[utm_campaign]\" id=\"form-field-utm_campaign\" class=\"elementor-field elementor-size-sm  elementor-field-textual\">\n\t\t\t\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t\t\t\t\t<div class=\"elementor-field-type-hidden elementor-field-group elementor-column elementor-field-group-utm_term elementor-col-100\">\n\t\t\t\t\t\t\t\t\t\t\t\t\t<input size=\"1\" type=\"hidden\" name=\"form_fields[utm_term]\" id=\"form-field-utm_term\" class=\"elementor-field elementor-size-sm  elementor-field-textual\">\n\t\t\t\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t\t\t\t\t<div class=\"elementor-field-type-hidden elementor-field-group elementor-column elementor-field-group-utm_content elementor-col-100\">\n\t\t\t\t\t\t\t\t\t\t\t\t\t<input size=\"1\" type=\"hidden\" name=\"form_fields[utm_content]\" id=\"form-field-utm_content\" class=\"elementor-field elementor-size-sm  elementor-field-textual\">\n\t\t\t\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t\t\t\t\t<div class=\"elementor-field-type-hidden elementor-field-group elementor-column elementor-field-group-utm_id elementor-col-100\">\n\t\t\t\t\t\t\t\t\t\t\t\t\t<input size=\"1\" type=\"hidden\" name=\"form_fields[utm_id]\" id=\"form-field-utm_id\" class=\"elementor-field elementor-size-sm  elementor-field-textual\">\n\t\t\t\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t\t\t\t\t<div class=\"elementor-field-group elementor-column elementor-field-type-submit elementor-col-100 e-form__buttons\">\n\t\t\t\t\t<button class=\"elementor-button elementor-size-sm\" type=\"submit\">\n\t\t\t\t\t\t<span class=\"elementor-button-content-wrapper\">\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<span class=\"elementor-button-text\">Send<\/span>\n\t\t\t\t\t\t\t\t\t\t\t\t\t<\/span>\n\t\t\t\t\t<\/button>\n\t\t\t\t<\/div>\n\t\t\t<\/div>\n\t\t<\/form>\n\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t<div class=\"elementor-element elementor-element-7c6633c e-flex e-con-boxed e-con e-child\" data-id=\"7c6633c\" data-element_type=\"container\">\n\t\t\t\t\t<div class=\"e-con-inner\">\n\t\t<div class=\"elementor-element elementor-element-74f7ae8 e-con-full e-flex e-con e-child\" data-id=\"74f7ae8\" data-element_type=\"container\">\n\t\t\t\t<div class=\"elementor-element elementor-element-1b00676 elementor-widget elementor-widget-heading\" data-id=\"1b00676\" data-element_type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<h2 class=\"elementor-heading-title elementor-size-default\">Frequently Asked Questions<\/h2>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t<div class=\"elementor-element elementor-element-de6b5d8 e-con-full e-flex e-con e-child\" data-id=\"de6b5d8\" data-element_type=\"container\">\n\t\t\t\t<div class=\"elementor-element elementor-element-d25396e elementor-widget elementor-widget-heading\" data-id=\"d25396e\" data-element_type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<h3 class=\"elementor-heading-title elementor-size-default\">What is Fick's Law in simple terms?<\/h3>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-47b1900 elementor-widget elementor-widget-text-editor\" data-id=\"47b1900\" data-element_type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<p>Fick&#8217;s Law says that a substance spreads from where there is more of it to where there is less, and that the speed of that spreading depends on a property called the diffusion coefficient. In resin drying, the substance is water inside the pellet, and the diffusion coefficient is how fast water can move through the solid polymer. Fick&#8217;s Second Law adds the time dimension: it describes how the water concentration at each point inside the pellet changes as drying proceeds.<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t<div class=\"elementor-element elementor-element-853146a e-con-full e-flex e-con e-child\" data-id=\"853146a\" data-element_type=\"container\">\n\t\t\t\t<div class=\"elementor-element elementor-element-441e3a0 elementor-widget elementor-widget-heading\" data-id=\"441e3a0\" data-element_type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<h3 class=\"elementor-heading-title elementor-size-default\">Why does temperature matter more than anything else in resin drying?<\/h3>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-6e0b97d elementor-widget elementor-widget-text-editor\" data-id=\"6e0b97d\" data-element_type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<p>Because the diffusion coefficient rises exponentially with temperature, following the Arrhenius relationship. Lowering the drying temperature by 30\u00b0F can cut the diffusion coefficient by 40 to 60 percent, so moisture inside the pellet moves far more slowly and drying takes far longer. Airflow and dry air carry moisture away once it reaches the surface, but only temperature changes how fast it gets there.<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t<div class=\"elementor-element elementor-element-247d14f e-con-full e-flex e-con e-child\" data-id=\"247d14f\" data-element_type=\"container\">\n\t\t\t\t<div class=\"elementor-element elementor-element-1fc4fb6 elementor-widget elementor-widget-heading\" data-id=\"1fc4fb6\" data-element_type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<h3 class=\"elementor-heading-title elementor-size-default\">Does vacuum speed up diffusion inside a pellet?<\/h3>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-7e8b98d elementor-widget elementor-widget-text-editor\" data-id=\"7e8b98d\" data-element_type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<p>No. The diffusion coefficient depends on temperature, the material, and pellet geometry, not on the pressure outside the pellet. Water dissolved in the polymer has no liquid phase and does not boil; vacuum lowers the vapor pressure at the pellet surface, the same job dry air does, so moisture that has already reached the surface leaves quickly. It does not change how fast moisture moves through the solid polymer from the core, which is the slow step for resins such as Nylon that are dried at 160 to 180\u00b0F. In a hybrid hot-air\/vacuum dryer, the hot-air stage does the diffusion work and the short, unheated vacuum step finishes the surface.<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t<div class=\"elementor-element elementor-element-927c5e5 e-con-full e-flex e-con e-child\" data-id=\"927c5e5\" data-element_type=\"container\">\n\t\t\t\t<div class=\"elementor-element elementor-element-8eaf802 elementor-widget elementor-widget-heading\" data-id=\"8eaf802\" data-element_type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<h3 class=\"elementor-heading-title elementor-size-default\">Why does nylon take so long to dry?<\/h3>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-37168ee elementor-widget elementor-widget-text-editor\" data-id=\"37168ee\" data-element_type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<p>Nylon&#8217;s safe drying temperature, 160 to 180\u00b0F, is deliberately low to avoid yellowing and degradation, and at that temperature the diffusion coefficient is at the slow end of its range. Nylon also takes up more water than most engineering resins, so there is more moisture to move. The result is hours of drying under proper conditions rather than minutes.<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t<div class=\"elementor-element elementor-element-79ddbbf e-con-full e-flex e-con e-child\" data-id=\"79ddbbf\" data-element_type=\"container\">\n\t\t\t\t<div class=\"elementor-element elementor-element-bb035cf elementor-widget elementor-widget-heading\" data-id=\"bb035cf\" data-element_type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<h3 class=\"elementor-heading-title elementor-size-default\">How can I tell whether my resin is dry inside, not just on the surface?<\/h3>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-408484c elementor-widget elementor-widget-text-editor\" data-id=\"408484c\" data-element_type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<p>Run a moisture rebound test. Measure a sample at the dryer discharge, seal a second sample for at least 20 to 30 minutes, then measure that one. If the second reading settles close to the first and both meet the supplier&#8217;s specification, the core is dry. If the second reading climbs, moisture was still diffusing out of a wet core when the first reading was taken.<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t<div class=\"elementor-element elementor-element-0bd6e00 e-con-full e-flex e-con e-child\" data-id=\"0bd6e00\" data-element_type=\"container\">\n\t\t\t\t<div class=\"elementor-element elementor-element-69e74f7 elementor-widget elementor-widget-heading\" data-id=\"69e74f7\" data-element_type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<h2 class=\"elementor-heading-title elementor-size-default\">About the Authors<\/h2>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t<div class=\"elementor-element elementor-element-56548f9 e-con-full e-flex e-con e-child\" data-id=\"56548f9\" data-element_type=\"container\">\n\t\t\t\t<div class=\"elementor-element elementor-element-c04bb36 elementor-widget elementor-widget-shortcode\" data-id=\"c04bb36\" data-element_type=\"widget\" data-widget_type=\"shortcode.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t<div class=\"elementor-shortcode\">\t\t<div data-elementor-type=\"section\" data-elementor-id=\"5946\" class=\"elementor elementor-5946\" data-elementor-post-type=\"elementor_library\">\n\t\t\t<div class=\"elementor-element elementor-element-5ac2ce0 e-flex e-con-boxed e-con e-parent\" data-id=\"5ac2ce0\" data-element_type=\"container\" data-settings=\"{&quot;background_background&quot;:&quot;classic&quot;}\">\n\t\t\t\t\t<div class=\"e-con-inner\">\n\t\t\t\t<div class=\"elementor-element elementor-element-b4853d4 elementor-widget elementor-widget-image\" data-id=\"b4853d4\" data-element_type=\"widget\" data-widget_type=\"image.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<img loading=\"lazy\" decoding=\"async\" width=\"150\" height=\"150\" src=\"https:\/\/www.novatec.com\/knowledge-center\/wp-content\/uploads\/2026\/09\/mark-haynie-studio-150x150.png\" class=\"attachment-thumbnail size-thumbnail wp-image-5924\" alt=\"Mark Haynie, Novatec resin drying expert\" \/>\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t<div class=\"elementor-element elementor-element-23e7ff1 e-con-full e-flex e-con e-child\" data-id=\"23e7ff1\" data-element_type=\"container\">\n\t\t\t\t<div class=\"elementor-element elementor-element-04137fe elementor-widget elementor-widget-heading\" data-id=\"04137fe\" data-element_type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<h3 class=\"elementor-heading-title elementor-size-default\"><a href=\"https:\/\/www.novatec.com\/knowledge-center\/novatec-expert-author-panel\/#mark-haynie\">Mark Haynie<\/a><\/h3>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-4d7dfce elementor-widget elementor-widget-heading\" data-id=\"4d7dfce\" data-element_type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<h4 class=\"elementor-heading-title elementor-size-default\">Vice President of Moisture &amp; Drying Technologies, Novatec<\/h4>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-4f9ecb7 elementor-widget elementor-widget-text-editor\" data-id=\"4f9ecb7\" data-element_type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<p>Mark Haynie has designed and installed resin drying systems for more than 40 years, working in thousands of plastics plants across the industry. As Novatec\u2019s Vice President of Moisture &amp; Drying Technologies, he leads the company\u2019s drying technology group, including its work on moisture measurement and predictive drying. He also serves as a technical reviewer for Novatec\u2019s Drying Knowledge Center and has authored numerous technical articles and whitepapers on resin drying and moisture. <br \/><span data-teams=\"true\">Mark earned a Bachelor of Science in Chemical Engineering from Virginia Tech.<\/span><br \/>Through Novatec\u2019s Ask the Expert program, Mark regularly helps processors troubleshoot drying performance and resin-moisture challenges.<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-5ec4f36 elementor-widget elementor-widget-button\" data-id=\"5ec4f36\" data-element_type=\"widget\" data-widget_type=\"button.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<div class=\"elementor-button-wrapper\">\n\t\t\t\t\t<a class=\"elementor-button elementor-button-link elementor-size-sm\" href=\"https:\/\/www.novatec.com\/knowledge-center\/novatec-expert-author-panel\/#mark-haynie\">\n\t\t\t\t\t\t<span class=\"elementor-button-content-wrapper\">\n\t\t\t\t\t\t\t\t\t<span class=\"elementor-button-text\">View Mark\u2019s full profile \u2192<\/span>\n\t\t\t\t\t<\/span>\n\t\t\t\t\t<\/a>\n\t\t\t\t<\/div>\n\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-1f298c7 elementor-widget elementor-widget-shortcode\" data-id=\"1f298c7\" data-element_type=\"widget\" data-widget_type=\"shortcode.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t<div class=\"elementor-shortcode\">\t\t<div data-elementor-type=\"section\" data-elementor-id=\"5958\" class=\"elementor elementor-5958\" data-elementor-post-type=\"elementor_library\">\n\t\t\t<div class=\"elementor-element elementor-element-56a33181 e-flex e-con-boxed e-con e-parent\" data-id=\"56a33181\" data-element_type=\"container\" data-settings=\"{&quot;background_background&quot;:&quot;classic&quot;}\">\n\t\t\t\t\t<div class=\"e-con-inner\">\n\t\t\t\t<div class=\"elementor-element elementor-element-1eebdf8 elementor-widget elementor-widget-image\" data-id=\"1eebdf8\" data-element_type=\"widget\" data-widget_type=\"image.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<img loading=\"lazy\" decoding=\"async\" width=\"150\" height=\"150\" src=\"https:\/\/www.novatec.com\/knowledge-center\/wp-content\/uploads\/2026\/09\/joshua-belisle-studio-150x150.png\" class=\"attachment-thumbnail size-thumbnail wp-image-5928\" alt=\"Joshua Belisle, Novatec Technology Manager\" \/>\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t<div class=\"elementor-element elementor-element-7f21cf5e e-con-full e-flex e-con e-child\" data-id=\"7f21cf5e\" data-element_type=\"container\">\n\t\t\t\t<div class=\"elementor-element elementor-element-1f48c421 elementor-widget elementor-widget-heading\" data-id=\"1f48c421\" data-element_type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<h3 class=\"elementor-heading-title elementor-size-default\"><a href=\"https:\/\/www.novatec.com\/knowledge-center\/novatec-expert-author-panel\/#joshua-belisle\">Joshua Belisle<\/a><\/h3>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-552f0471 elementor-widget elementor-widget-heading\" data-id=\"552f0471\" data-element_type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<h4 class=\"elementor-heading-title elementor-size-default\">Technology Manager, Novatec<\/h4>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-33395608 elementor-widget elementor-widget-text-editor\" data-id=\"33395608\" data-element_type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<p>Joshua Belisle is Technology Manager at Novatec, where his work focuses on simulation and technology development for resin drying. He earned a B.S. in Mechanical Engineering with a minor in Engineering Business from the University of Virginia in 2023 and joined Novatec that same year. Joshua uses simulation tools to investigate previously difficult-to-measure aspects of the drying process, helping Novatec better understand airflow, heat transfer and other variables that influence resin-drying performance.<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-6dfbf296 elementor-widget elementor-widget-button\" data-id=\"6dfbf296\" data-element_type=\"widget\" data-widget_type=\"button.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<div class=\"elementor-button-wrapper\">\n\t\t\t\t\t<a class=\"elementor-button elementor-button-link elementor-size-sm\" href=\"https:\/\/www.novatec.com\/knowledge-center\/novatec-expert-author-panel\/#joshua-belisle\">\n\t\t\t\t\t\t<span class=\"elementor-button-content-wrapper\">\n\t\t\t\t\t\t\t\t\t<span class=\"elementor-button-text\">View Joshua\u2019s full profile \u2192<\/span>\n\t\t\t\t\t<\/span>\n\t\t\t\t\t<\/a>\n\t\t\t\t<\/div>\n\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t<div class=\"elementor-element elementor-element-efcf234 e-con-full e-flex e-con e-child\" data-id=\"efcf234\" data-element_type=\"container\">\n\t\t\t\t<div class=\"elementor-element elementor-element-912f8d8 elementor-widget elementor-widget-heading\" data-id=\"912f8d8\" data-element_type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<h2 class=\"elementor-heading-title elementor-size-default\">Sources<\/h2>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-b73d7d4 elementor-widget elementor-widget-text-editor\" data-id=\"b73d7d4\" data-element_type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<ul>\n    <li>Adolf Fick, <a href=\"https:\/\/doi.org\/10.1002\/andp.18551700105\">Ueber Diffusion<\/a>, Annalen der Physik, 1855: the original statement of the diffusion laws.<\/li>\n    <li>Alexander Teverovsky, <a href=\"https:\/\/nepp.nasa.gov\/DocUploads\/B9C0B2A1-4C69-4CB5-94863C560CBB0B19\/Moisture-Characteristics-3-part-NEPP-report.pdf\">Moisture Characteristics of Molding Compounds in PEMs<\/a>, NASA Electronic Parts and Packaging Program: Fickian diffusion and the Arrhenius temperature dependence of the diffusion coefficient in polymer molding compounds.<\/li>\n    <li>Novatec, <a href=\"https:\/\/www.novatec.com\/knowledge-center\/plastic-drying-knowledge-center\/resin-dryer-technologies\/compressed-air-resin-dryers\/the-science-of-vacuum-and-desiccant-drying-for-engineering-plastics\/\">The Science of Vacuum and Desiccant Drying for Engineering Plastics<\/a>, August 2026: diffusion-limited drying, the boiling-point argument, and the rebound-stable standard.<\/li>\n    <li>Novatec, <a href=\"https:\/\/www.novatec.com\/knowledge-center\/plastic-drying-knowledge-center\/resin-drying-basics\/how-moisture-leaves-a-plastic-pellet\/\">How Moisture Leaves a Plastic Pellet: Diffusion, Temperature, and Drying Time<\/a>, 2026: measured drying-time data showing the Arrhenius dependence in practice.<\/li>\n    <li>Dan Mesyn, Teknor Apex, <a href=\"https:\/\/etp.teknorapex.com\/blog\/drying-nylon-resin-for-injection-molding\">6 FAQs: Drying Nylon Resin for Injection Molding<\/a>, June 30, 2021: nylon drying temperature and the 0.02% to 0.20% processing window.<\/li>\n  <\/ul>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t<div class=\"elementor-element elementor-element-d618e09 e-con-full e-flex e-con e-child\" data-id=\"d618e09\" data-element_type=\"container\">\n\t\t<div class=\"elementor-element elementor-element-cc2321d e-con-full e-flex e-con e-child\" data-id=\"cc2321d\" data-element_type=\"container\">\n\t\t\t\t<div class=\"elementor-element elementor-element-08b81fe elementor-widget elementor-widget-heading\" data-id=\"08b81fe\" data-element_type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<h2 class=\"elementor-heading-title elementor-size-default\">Related Articles<\/h2>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t<div class=\"elementor-element elementor-element-c05abea e-con-full e-flex e-con e-child\" data-id=\"c05abea\" data-element_type=\"container\">\n\t\t<div class=\"elementor-element elementor-element-da05789 e-grid e-con-full e-con e-child\" data-id=\"da05789\" data-element_type=\"container\">\n\t\t<div class=\"elementor-element elementor-element-e2ae710 e-con-full e-flex e-con e-child\" data-id=\"e2ae710\" data-element_type=\"container\" data-settings=\"{&quot;background_background&quot;:&quot;classic&quot;}\">\n\t\t\t\t<div class=\"elementor-element elementor-element-7768e13 elementor-widget elementor-widget-image\" data-id=\"7768e13\" data-element_type=\"widget\" data-widget_type=\"image.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<a href=\"https:\/\/www.novatec.com\/knowledge-center\/plastic-drying-knowledge-center\/resin-moisture\/\">\n\t\t\t\t\t\t\t<img decoding=\"async\" src=\"https:\/\/www.novatec.com\/knowledge-center\/wp-content\/uploads\/2024\/08\/Blue-resin-pellets.1678456989270.webp\" title=\"\" alt=\"\" loading=\"lazy\" \/>\t\t\t\t\t\t\t\t<\/a>\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-1dcf2b6 elementor-widget elementor-widget-heading\" data-id=\"1dcf2b6\" data-element_type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<h3 class=\"elementor-heading-title elementor-size-default\"><a href=\"https:\/\/www.novatec.com\/knowledge-center\/plastic-drying-knowledge-center\/resin-moisture\/\">Understanding Moisture in Resin<\/a><\/h3>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-4c8773e elementor-widget elementor-widget-text-editor\" data-id=\"4c8773e\" data-element_type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<p>Understand surface and absorbed moisture, starting moisture levels, and their effect on resin processing.<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-df8f752 elementor-align-center elementor-widget elementor-widget-button\" data-id=\"df8f752\" data-element_type=\"widget\" data-widget_type=\"button.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<div class=\"elementor-button-wrapper\">\n\t\t\t\t\t<a class=\"elementor-button elementor-button-link elementor-size-sm\" href=\"https:\/\/www.novatec.com\/knowledge-center\/plastic-drying-knowledge-center\/resin-moisture\/\">\n\t\t\t\t\t\t<span class=\"elementor-button-content-wrapper\">\n\t\t\t\t\t\t\t\t\t<span class=\"elementor-button-text\">Learn More<\/span>\n\t\t\t\t\t<\/span>\n\t\t\t\t\t<\/a>\n\t\t\t\t<\/div>\n\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t<div class=\"elementor-element elementor-element-63a9133 e-con-full e-flex e-con e-child\" data-id=\"63a9133\" data-element_type=\"container\" data-settings=\"{&quot;background_background&quot;:&quot;classic&quot;}\">\n\t\t\t\t<div class=\"elementor-element elementor-element-1b2e57e elementor-widget elementor-widget-image\" data-id=\"1b2e57e\" data-element_type=\"widget\" data-widget_type=\"image.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<a href=\"https:\/\/www.novatec.com\/knowledge-center\/dewpoint-is-a-dryer-output-not-a-resin-readiness-score\/\">\n\t\t\t\t\t\t\t<img decoding=\"async\" src=\"https:\/\/www.novatec.com\/knowledge-center\/wp-content\/uploads\/2026\/08\/dewpoint-hero-sensor.png\" title=\"\" alt=\"\" loading=\"lazy\" \/>\t\t\t\t\t\t\t\t<\/a>\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-57dc19f elementor-widget elementor-widget-heading\" data-id=\"57dc19f\" data-element_type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<h3 class=\"elementor-heading-title elementor-size-default\"><a href=\"https:\/\/www.novatec.com\/knowledge-center\/dewpoint-is-a-dryer-output-not-a-resin-readiness-score\/\">Dewpoint Is a Dryer Output, Not a Resin Readiness Score<\/a><\/h3>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-2ba9e76 elementor-widget elementor-widget-text-editor\" data-id=\"2ba9e76\" data-element_type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<p>See why dryer dewpoint must be paired with direct resin moisture measurement.<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-e7cb10a elementor-align-center elementor-widget elementor-widget-button\" data-id=\"e7cb10a\" data-element_type=\"widget\" data-widget_type=\"button.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<div class=\"elementor-button-wrapper\">\n\t\t\t\t\t<a class=\"elementor-button elementor-button-link elementor-size-sm\" href=\"https:\/\/www.novatec.com\/knowledge-center\/dewpoint-is-a-dryer-output-not-a-resin-readiness-score\/\">\n\t\t\t\t\t\t<span class=\"elementor-button-content-wrapper\">\n\t\t\t\t\t\t\t\t\t<span class=\"elementor-button-text\">Learn More<\/span>\n\t\t\t\t\t<\/span>\n\t\t\t\t\t<\/a>\n\t\t\t\t<\/div>\n\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t<div class=\"elementor-element elementor-element-8d4856c e-con-full e-flex e-con e-child\" data-id=\"8d4856c\" data-element_type=\"container\" data-settings=\"{&quot;background_background&quot;:&quot;classic&quot;}\">\n\t\t\t\t<div class=\"elementor-element elementor-element-4e3992e elementor-widget elementor-widget-image\" data-id=\"4e3992e\" data-element_type=\"widget\" data-widget_type=\"image.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<a href=\"https:\/\/www.novatec.com\/knowledge-center\/plastic-drying-knowledge-center\/resin-dryer-technologies\/drying-hoppers-for-plastic-resins\/\">\n\t\t\t\t\t\t\t<img decoding=\"async\" src=\"https:\/\/www.novatec.com\/knowledge-center\/wp-content\/uploads\/2024\/08\/Drying-Hopper-Novatec-1by1.1678137478808.webp\" title=\"\" alt=\"\" loading=\"lazy\" \/>\t\t\t\t\t\t\t\t<\/a>\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-62c9633 elementor-widget elementor-widget-heading\" data-id=\"62c9633\" data-element_type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<h3 class=\"elementor-heading-title elementor-size-default\"><a href=\"https:\/\/www.novatec.com\/knowledge-center\/plastic-drying-knowledge-center\/resin-dryer-technologies\/drying-hoppers-for-plastic-resins\/\">Drying Hoppers for Plastic Resins<\/a><\/h3>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-9cb9c7a elementor-widget elementor-widget-text-editor\" data-id=\"9cb9c7a\" data-element_type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<p>Explore hopper design, airflow, and residence time for consistent resin drying.<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-f504e4e elementor-align-center elementor-widget elementor-widget-button\" data-id=\"f504e4e\" data-element_type=\"widget\" data-widget_type=\"button.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<div class=\"elementor-button-wrapper\">\n\t\t\t\t\t<a class=\"elementor-button elementor-button-link elementor-size-sm\" href=\"https:\/\/www.novatec.com\/knowledge-center\/plastic-drying-knowledge-center\/resin-dryer-technologies\/drying-hoppers-for-plastic-resins\/\">\n\t\t\t\t\t\t<span class=\"elementor-button-content-wrapper\">\n\t\t\t\t\t\t\t\t\t<span class=\"elementor-button-text\">Learn More<\/span>\n\t\t\t\t\t<\/span>\n\t\t\t\t\t<\/a>\n\t\t\t\t<\/div>\n\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t<div class=\"elementor-element elementor-element-1e4b227 e-con-full e-flex e-con e-child\" data-id=\"1e4b227\" data-element_type=\"container\">\n\t\t\t\t<div class=\"elementor-element elementor-element-cb01da2 elementor-widget elementor-widget-shortcode\" data-id=\"cb01da2\" data-element_type=\"widget\" data-widget_type=\"shortcode.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t<div class=\"elementor-shortcode\">\t\t<div data-elementor-type=\"section\" data-elementor-id=\"655\" class=\"elementor elementor-655\" data-elementor-post-type=\"elementor_library\">\n\t\t\t<div class=\"elementor-element elementor-element-66df30ab e-flex e-con-boxed e-con e-parent\" data-id=\"66df30ab\" data-element_type=\"container\">\n\t\t\t\t\t<div class=\"e-con-inner\">\n\t\t<div class=\"elementor-element elementor-element-488ac7ed e-con-full e-flex e-con e-child\" data-id=\"488ac7ed\" data-element_type=\"container\">\n\t\t\t\t<div class=\"elementor-element elementor-element-5e1da28a elementor-widget elementor-widget-heading\" data-id=\"5e1da28a\" data-element_type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<h2 class=\"elementor-heading-title elementor-size-default\">Ask the Plastic Drying Expert<\/h2>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-6254b49f elementor-widget elementor-widget-image\" data-id=\"6254b49f\" data-element_type=\"widget\" data-widget_type=\"image.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t\t\t\t<figure class=\"wp-caption\">\n\t\t\t\t\t\t\t\t\t\t\t<a href=\"https:\/\/www.novatec.com\/knowledge-center\/novatec-expert-author-panel\/#mark-haynie\">\n\t\t\t\t\t\t\t<img loading=\"lazy\" decoding=\"async\" width=\"300\" height=\"198\" src=\"https:\/\/www.novatec.com\/knowledge-center\/wp-content\/uploads\/2026\/09\/mark-haynie-studio-300x198.png\" class=\"attachment-medium size-medium wp-image-5924\" alt=\"Mark Haynie, Novatec resin drying expert\" srcset=\"https:\/\/www.novatec.com\/knowledge-center\/wp-content\/uploads\/2026\/09\/mark-haynie-studio-300x198.png 300w, https:\/\/www.novatec.com\/knowledge-center\/wp-content\/uploads\/2026\/09\/mark-haynie-studio-1024x677.png 1024w, https:\/\/www.novatec.com\/knowledge-center\/wp-content\/uploads\/2026\/09\/mark-haynie-studio-768x508.png 768w, https:\/\/www.novatec.com\/knowledge-center\/wp-content\/uploads\/2026\/09\/mark-haynie-studio-1536x1016.png 1536w, https:\/\/www.novatec.com\/knowledge-center\/wp-content\/uploads\/2026\/09\/mark-haynie-studio.png 1542w\" sizes=\"(max-width: 300px) 100vw, 300px\" \/>\t\t\t\t\t\t\t\t<\/a>\n\t\t\t\t\t\t\t\t\t\t\t<figcaption class=\"widget-image-caption wp-caption-text\">Mark Haynie, Vice President, Moisture &amp; Drying, Novatec, Inc.<\/figcaption>\n\t\t\t\t\t\t\t\t\t\t<\/figure>\n\t\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-91f5f1d elementor-widget elementor-widget-text-editor\" data-id=\"91f5f1d\" data-element_type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<h5><strong>Author Profile:<\/strong><\/h5><div class=\"elementor-element elementor-element-4f9ecb7 elementor-widget elementor-widget-text-editor\" data-id=\"4f9ecb7\" data-element_type=\"widget\" data-widget_type=\"text-editor.default\"><div class=\"elementor-widget-container\"><p>Mark Haynie has designed and installed resin drying systems for more than 40 years, working in thousands of plastics plants across the industry. As Novatec\u2019s Vice President of Moisture &amp; Drying Technologies, he leads the company\u2019s drying technology group, including its work on moisture measurement and predictive drying. He also serves as a technical reviewer for Novatec\u2019s Drying Knowledge Center and has authored numerous technical articles and whitepapers on resin drying and moisture.<\/p><p><br \/><span data-teams=\"true\">Mark earned a Bachelor of Science in Chemical Engineering from Virginia Tech.<\/span><br \/>Through Novatec\u2019s Ask the Expert program, Mark regularly helps processors troubleshoot drying performance and resin-moisture challenges.<\/p><\/div><\/div>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-ea033af elementor-button-info elementor-align-center elementor-widget elementor-widget-button\" data-id=\"ea033af\" data-element_type=\"widget\" data-widget_type=\"button.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<div class=\"elementor-button-wrapper\">\n\t\t\t\t\t<a class=\"elementor-button elementor-button-link elementor-size-sm\" href=\"https:\/\/www.novatec.com\/knowledge-center\/novatec-expert-author-panel\/mark-haynie-novatec-knowledge-center\/\">\n\t\t\t\t\t\t<span class=\"elementor-button-content-wrapper\">\n\t\t\t\t\t\t\t\t\t<span class=\"elementor-button-text\">View Mark\u2019s full Profile <\/span>\n\t\t\t\t\t<\/span>\n\t\t\t\t\t<\/a>\n\t\t\t\t<\/div>\n\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-31a085ad elementor-widget elementor-widget-heading\" data-id=\"31a085ad\" data-element_type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<h3 class=\"elementor-heading-title elementor-size-default\">Ask Your Question<\/h3>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-1dbd06e3 elementor-button-align-stretch elementor-widget elementor-widget-form\" data-id=\"1dbd06e3\" data-element_type=\"widget\" data-settings=\"{&quot;step_next_label&quot;:&quot;Next&quot;,&quot;step_previous_label&quot;:&quot;Previous&quot;,&quot;button_width&quot;:&quot;100&quot;,&quot;step_type&quot;:&quot;number_text&quot;,&quot;step_icon_shape&quot;:&quot;circle&quot;}\" data-widget_type=\"form.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t<form class=\"elementor-form\" method=\"post\" name=\"Ask the Expert Drying\" aria-label=\"Ask the Expert Drying\">\n\t\t\t<input type=\"hidden\" name=\"post_id\" value=\"655\"\/>\n\t\t\t<input type=\"hidden\" name=\"form_id\" value=\"1dbd06e3\"\/>\n\t\t\t<input type=\"hidden\" name=\"referer_title\" value=\"Plastic Knowledge Center\" \/>\n\n\t\t\t\n\t\t\t<div class=\"elementor-form-fields-wrapper elementor-labels-above\">\n\t\t\t\t\t\t\t\t<div class=\"elementor-field-type-text elementor-field-group elementor-column elementor-field-group-name elementor-col-100 elementor-field-required elementor-mark-required\">\n\t\t\t\t\t\t\t\t\t\t\t\t<label for=\"form-field-name\" class=\"elementor-field-label\">\n\t\t\t\t\t\t\t\tName\t\t\t\t\t\t\t<\/label>\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t<input size=\"1\" type=\"text\" name=\"form_fields[name]\" id=\"form-field-name\" class=\"elementor-field elementor-size-sm  elementor-field-textual\" placeholder=\"Name\" required=\"required\">\n\t\t\t\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t\t\t\t\t<div class=\"elementor-field-type-email elementor-field-group elementor-column elementor-field-group-email elementor-col-100 elementor-field-required elementor-mark-required\">\n\t\t\t\t\t\t\t\t\t\t\t\t<label for=\"form-field-email\" class=\"elementor-field-label\">\n\t\t\t\t\t\t\t\tEmail\t\t\t\t\t\t\t<\/label>\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t<input size=\"1\" type=\"email\" name=\"form_fields[email]\" id=\"form-field-email\" class=\"elementor-field elementor-size-sm  elementor-field-textual\" placeholder=\"Email\" required=\"required\">\n\t\t\t\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t\t\t\t\t<div class=\"elementor-field-type-textarea elementor-field-group elementor-column elementor-field-group-message elementor-col-100 elementor-field-required elementor-mark-required\">\n\t\t\t\t\t\t\t\t\t\t\t\t<label for=\"form-field-message\" class=\"elementor-field-label\">\n\t\t\t\t\t\t\t\tMessage\t\t\t\t\t\t\t<\/label>\n\t\t\t\t\t\t<textarea class=\"elementor-field-textual elementor-field  elementor-size-sm\" name=\"form_fields[message]\" id=\"form-field-message\" rows=\"4\" placeholder=\"Message\" required=\"required\"><\/textarea>\t\t\t\t<\/div>\n\t\t\t\t\t\t\t\t<div class=\"elementor-field-type-hidden elementor-field-group elementor-column elementor-field-group-user_info elementor-col-100\">\n\t\t\t\t\t\t\t\t\t\t\t\t\t<input size=\"1\" type=\"hidden\" name=\"form_fields[user_info]\" id=\"form-field-user_info\" class=\"elementor-field elementor-size-sm  elementor-field-textual\">\n\t\t\t\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t\t\t\t\t<div class=\"elementor-field-type-hidden elementor-field-group elementor-column elementor-field-group-utm_source elementor-col-100\">\n\t\t\t\t\t\t\t\t\t\t\t\t\t<input size=\"1\" type=\"hidden\" name=\"form_fields[utm_source]\" id=\"form-field-utm_source\" class=\"elementor-field elementor-size-sm  elementor-field-textual\">\n\t\t\t\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t\t\t\t\t<div class=\"elementor-field-type-hidden elementor-field-group elementor-column elementor-field-group-utm_medium elementor-col-100\">\n\t\t\t\t\t\t\t\t\t\t\t\t\t<input size=\"1\" type=\"hidden\" name=\"form_fields[utm_medium]\" id=\"form-field-utm_medium\" class=\"elementor-field elementor-size-sm  elementor-field-textual\">\n\t\t\t\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t\t\t\t\t<div class=\"elementor-field-type-hidden elementor-field-group elementor-column elementor-field-group-utm_campaign elementor-col-100\">\n\t\t\t\t\t\t\t\t\t\t\t\t\t<input size=\"1\" type=\"hidden\" name=\"form_fields[utm_campaign]\" id=\"form-field-utm_campaign\" class=\"elementor-field elementor-size-sm  elementor-field-textual\">\n\t\t\t\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t\t\t\t\t<div class=\"elementor-field-type-hidden elementor-field-group elementor-column elementor-field-group-utm_term elementor-col-100\">\n\t\t\t\t\t\t\t\t\t\t\t\t\t<input size=\"1\" type=\"hidden\" name=\"form_fields[utm_term]\" id=\"form-field-utm_term\" class=\"elementor-field elementor-size-sm  elementor-field-textual\">\n\t\t\t\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t\t\t\t\t<div class=\"elementor-field-type-hidden elementor-field-group elementor-column elementor-field-group-utm_content elementor-col-100\">\n\t\t\t\t\t\t\t\t\t\t\t\t\t<input size=\"1\" type=\"hidden\" name=\"form_fields[utm_content]\" id=\"form-field-utm_content\" class=\"elementor-field elementor-size-sm  elementor-field-textual\">\n\t\t\t\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t\t\t\t\t<div class=\"elementor-field-type-hidden elementor-field-group elementor-column elementor-field-group-utm_id elementor-col-100\">\n\t\t\t\t\t\t\t\t\t\t\t\t\t<input size=\"1\" type=\"hidden\" name=\"form_fields[utm_id]\" id=\"form-field-utm_id\" class=\"elementor-field elementor-size-sm  elementor-field-textual\">\n\t\t\t\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t\t\t\t\t<div class=\"elementor-field-group elementor-column elementor-field-type-submit elementor-col-100 e-form__buttons\">\n\t\t\t\t\t<button class=\"elementor-button elementor-size-sm\" type=\"submit\">\n\t\t\t\t\t\t<span class=\"elementor-button-content-wrapper\">\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<span class=\"elementor-button-text\">Send<\/span>\n\t\t\t\t\t\t\t\t\t\t\t\t\t<\/span>\n\t\t\t\t\t<\/button>\n\t\t\t\t<\/div>\n\t\t\t<\/div>\n\t\t<\/form>\n\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-5b7b6ea6 elementor-widget elementor-widget-text-editor\" data-id=\"5b7b6ea6\" data-element_type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<div class=\"m-b-3 kc-company w-75 mx-auto\"><h4 class=\"font-lg font-body font-bold m-b-05\">Novatec, Inc.<\/h4><address class=\"leading-normal m-b-05\"><div class=\"hide-empty\">410-789-4811 | 800-237-8379<\/div><\/address><p><a class=\"font-semibold kc-weblink\" href=\"http:\/\/www.novatec.com\/\" target=\"_blank\" rel=\"noopener sponsored\">http:\/\/www.novatec.com<\/a><\/p><\/div><div id=\"kcExpert\" class=\"m-b-3\">\u00a0<\/div>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-704001c elementor-button-info elementor-align-center elementor-widget elementor-widget-button\" data-id=\"704001c\" data-element_type=\"widget\" data-widget_type=\"button.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<div class=\"elementor-button-wrapper\">\n\t\t\t\t\t<a class=\"elementor-button elementor-button-link elementor-size-sm\" href=\"https:\/\/www.novatec.com\/\">\n\t\t\t\t\t\t<span class=\"elementor-button-content-wrapper\">\n\t\t\t\t\t\t<span class=\"elementor-button-icon\">\n\t\t\t\t<svg aria-hidden=\"true\" class=\"e-font-icon-svg e-fas-home\" viewBox=\"0 0 576 512\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\"><path d=\"M280.37 148.26L96 300.11V464a16 16 0 0 0 16 16l112.06-.29a16 16 0 0 0 15.92-16V368a16 16 0 0 1 16-16h64a16 16 0 0 1 16 16v95.64a16 16 0 0 0 16 16.05L464 480a16 16 0 0 0 16-16V300L295.67 148.26a12.19 12.19 0 0 0-15.3 0zM571.6 251.47L488 182.56V44.05a12 12 0 0 0-12-12h-56a12 12 0 0 0-12 12v72.61L318.47 43a48 48 0 0 0-61 0L4.34 251.47a12 12 0 0 0-1.6 16.9l25.5 31A12 12 0 0 0 45.15 301l235.22-193.74a12.19 12.19 0 0 1 15.3 0L530.9 301a12 12 0 0 0 16.9-1.6l25.5-31a12 12 0 0 0-1.7-16.93z\"><\/path><\/svg>\t\t\t<\/span>\n\t\t\t\t\t\t\t\t\t<span class=\"elementor-button-text\">Visit Main Website<\/span>\n\t\t\t\t\t<\/span>\n\t\t\t\t\t<\/a>\n\t\t\t\t<\/div>\n\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t","protected":false},"excerpt":{"rendered":"<p>RESIN DRYING What Is Fick&#8217;s Law, and What Does It Have to Do With Drying Plastic? By Mark Haynie and [&hellip;]<\/p>\n","protected":false},"author":5,"featured_media":0,"parent":1029,"menu_order":0,"comment_status":"closed","ping_status":"closed","template":"elementor_header_footer","meta":{"_uag_custom_page_level_css":"","site-sidebar-layout":"no-sidebar","site-content-layout":"","ast-site-content-layout":"full-width-container","site-content-style":"default","site-sidebar-style":"default","ast-global-header-display":"","ast-banner-title-visibility":"","ast-main-header-display":"","ast-hfb-above-header-display":"","ast-hfb-below-header-display":"","ast-hfb-mobile-header-display":"","site-post-title":"disabled","ast-breadcrumbs-content":"","ast-featured-img":"disabled","footer-sml-layout":"","theme-transparent-header-meta":"default","adv-header-id-meta":"","stick-header-meta":"default","header-above-stick-meta":"","header-main-stick-meta":"","header-below-stick-meta":"","astra-migrate-meta-layouts":"set","ast-page-background-enabled":"default","ast-page-background-meta":{"desktop":{"background-color":"var(--ast-global-color-4)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"tablet":{"background-color":"","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"mobile":{"background-color":"","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""}},"ast-content-background-meta":{"desktop":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"tablet":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"mobile":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""}},"footnotes":""},"class_list":["post-6695","page","type-page","status-publish","hentry"],"yoast_head":"<!-- This site is optimized with the Yoast SEO Premium plugin v23.3 (Yoast SEO v27.1.1) - https:\/\/yoast.com\/product\/yoast-seo-premium-wordpress\/ -->\n<title>Fick\u2019s Law and Plastic Resin Drying | Novatec<\/title>\n<meta name=\"description\" content=\"See how Fick\u2019s Law explains moisture diffusion in plastic pellets, why temperature controls drying speed, and how dry air sustains the moisture gradient.\" \/>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/www.novatec.com\/knowledge-center\/plastic-drying-knowledge-center\/resin-drying-basics\/what-is-ficks-law-resin-drying\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"What Is Fick&#039;s Law, and What Does It Have to Do With Drying Plastic?\" \/>\n<meta property=\"og:description\" content=\"See how Fick\u2019s Law explains moisture diffusion in plastic pellets, why temperature controls drying speed, and how dry air sustains the moisture gradient.\" \/>\n<meta property=\"og:url\" content=\"https:\/\/www.novatec.com\/knowledge-center\/plastic-drying-knowledge-center\/resin-drying-basics\/what-is-ficks-law-resin-drying\/\" \/>\n<meta property=\"og:site_name\" content=\"Plastic Knowledge Center\" \/>\n<meta property=\"article:modified_time\" content=\"2026-10-22T18:25:50+00:00\" \/>\n<meta property=\"og:image\" content=\"https:\/\/www.novatec.com\/knowledge-center\/wp-content\/uploads\/2026\/10\/kc-oct21-pellet-moisture-diffusion-cross-section.webp\" \/>\n<meta name=\"twitter:card\" content=\"summary_large_image\" \/>\n<meta name=\"twitter:label1\" content=\"Est. reading time\" \/>\n\t<meta name=\"twitter:data1\" content=\"17 minutes\" \/>\n<script type=\"application\/ld+json\" class=\"yoast-schema-graph\">{\"@context\":\"https:\/\/schema.org\",\"@graph\":[{\"@type\":\"WebPage\",\"@id\":\"https:\/\/www.novatec.com\/knowledge-center\/plastic-drying-knowledge-center\/resin-drying-basics\/what-is-ficks-law-resin-drying\/\",\"url\":\"https:\/\/www.novatec.com\/knowledge-center\/plastic-drying-knowledge-center\/resin-drying-basics\/what-is-ficks-law-resin-drying\/\",\"name\":\"Fick\u2019s Law and Plastic Resin Drying | Novatec\",\"isPartOf\":{\"@id\":\"https:\/\/www.novatec.com\/knowledge-center\/#website\"},\"primaryImageOfPage\":{\"@id\":\"https:\/\/www.novatec.com\/knowledge-center\/plastic-drying-knowledge-center\/resin-drying-basics\/what-is-ficks-law-resin-drying\/#primaryimage\"},\"image\":{\"@id\":\"https:\/\/www.novatec.com\/knowledge-center\/plastic-drying-knowledge-center\/resin-drying-basics\/what-is-ficks-law-resin-drying\/#primaryimage\"},\"thumbnailUrl\":\"https:\/\/www.novatec.com\/knowledge-center\/wp-content\/uploads\/2026\/10\/kc-oct21-pellet-moisture-diffusion-cross-section.webp\",\"datePublished\":\"2026-10-22T08:47:27+00:00\",\"dateModified\":\"2026-10-22T18:25:50+00:00\",\"description\":\"See how Fick\u2019s Law explains moisture diffusion in plastic pellets, why temperature controls drying speed, and how dry air sustains the moisture gradient.\",\"breadcrumb\":{\"@id\":\"https:\/\/www.novatec.com\/knowledge-center\/plastic-drying-knowledge-center\/resin-drying-basics\/what-is-ficks-law-resin-drying\/#breadcrumb\"},\"inLanguage\":\"en-US\",\"potentialAction\":[{\"@type\":\"ReadAction\",\"target\":[\"https:\/\/www.novatec.com\/knowledge-center\/plastic-drying-knowledge-center\/resin-drying-basics\/what-is-ficks-law-resin-drying\/\"]}]},{\"@type\":\"ImageObject\",\"inLanguage\":\"en-US\",\"@id\":\"https:\/\/www.novatec.com\/knowledge-center\/plastic-drying-knowledge-center\/resin-drying-basics\/what-is-ficks-law-resin-drying\/#primaryimage\",\"url\":\"https:\/\/www.novatec.com\/knowledge-center\/wp-content\/uploads\/2026\/10\/kc-oct21-pellet-moisture-diffusion-cross-section.webp\",\"contentUrl\":\"https:\/\/www.novatec.com\/knowledge-center\/wp-content\/uploads\/2026\/10\/kc-oct21-pellet-moisture-diffusion-cross-section.webp\",\"width\":1200,\"height\":675,\"caption\":\"Cross-section of a plastic pellet with moisture concentrated in the core and diffusing toward the surface\"},{\"@type\":\"BreadcrumbList\",\"@id\":\"https:\/\/www.novatec.com\/knowledge-center\/plastic-drying-knowledge-center\/resin-drying-basics\/what-is-ficks-law-resin-drying\/#breadcrumb\",\"itemListElement\":[{\"@type\":\"ListItem\",\"position\":1,\"name\":\"Home\",\"item\":\"https:\/\/www.novatec.com\/knowledge-center\/\"},{\"@type\":\"ListItem\",\"position\":2,\"name\":\"Plastic Drying Knowledge Center\",\"item\":\"https:\/\/www.novatec.com\/knowledge-center\/plastic-drying-knowledge-center\/\"},{\"@type\":\"ListItem\",\"position\":3,\"name\":\"Drying Basics\",\"item\":\"https:\/\/www.novatec.com\/knowledge-center\/plastic-drying-knowledge-center\/resin-drying-basics\/\"},{\"@type\":\"ListItem\",\"position\":4,\"name\":\"What Is Fick&#8217;s Law, and What Does It Have to Do With Drying Plastic?\"}]},{\"@type\":\"WebSite\",\"@id\":\"https:\/\/www.novatec.com\/knowledge-center\/#website\",\"url\":\"https:\/\/www.novatec.com\/knowledge-center\/\",\"name\":\"Plastic Knowledge Center\",\"description\":\"Best  Knowledge Center &amp; Practices for Plastic Processors\",\"publisher\":{\"@id\":\"https:\/\/www.novatec.com\/knowledge-center\/#organization\"},\"potentialAction\":[{\"@type\":\"SearchAction\",\"target\":{\"@type\":\"EntryPoint\",\"urlTemplate\":\"https:\/\/www.novatec.com\/knowledge-center\/?s={search_term_string}\"},\"query-input\":{\"@type\":\"PropertyValueSpecification\",\"valueRequired\":true,\"valueName\":\"search_term_string\"}}],\"inLanguage\":\"en-US\"},{\"@type\":\"Organization\",\"@id\":\"https:\/\/www.novatec.com\/knowledge-center\/#organization\",\"name\":\"Novatec, Inc.\",\"url\":\"https:\/\/www.novatec.com\/knowledge-center\/\",\"logo\":{\"@type\":\"ImageObject\",\"inLanguage\":\"en-US\",\"@id\":\"https:\/\/www.novatec.com\/knowledge-center\/#\/schema\/logo\/image\/\",\"url\":\"https:\/\/www.novatec.com\/knowledge-center\/wp-content\/uploads\/2024\/08\/novatec_400x266.Logio_.jpg\",\"contentUrl\":\"https:\/\/www.novatec.com\/knowledge-center\/wp-content\/uploads\/2024\/08\/novatec_400x266.Logio_.jpg\",\"width\":400,\"height\":266,\"caption\":\"Novatec, Inc.\"},\"image\":{\"@id\":\"https:\/\/www.novatec.com\/knowledge-center\/#\/schema\/logo\/image\/\"}}]}<\/script>\n<!-- \/ Yoast SEO Premium plugin. -->","yoast_head_json":{"title":"Fick\u2019s Law and Plastic Resin Drying | Novatec","description":"See how Fick\u2019s Law explains moisture diffusion in plastic pellets, why temperature controls drying speed, and how dry air sustains the moisture gradient.","robots":{"index":"index","follow":"follow","max-snippet":"max-snippet:-1","max-image-preview":"max-image-preview:large","max-video-preview":"max-video-preview:-1"},"canonical":"https:\/\/www.novatec.com\/knowledge-center\/plastic-drying-knowledge-center\/resin-drying-basics\/what-is-ficks-law-resin-drying\/","og_locale":"en_US","og_type":"article","og_title":"What Is Fick's Law, and What Does It Have to Do With Drying Plastic?","og_description":"See how Fick\u2019s Law explains moisture diffusion in plastic pellets, why temperature controls drying speed, and how dry air sustains the moisture gradient.","og_url":"https:\/\/www.novatec.com\/knowledge-center\/plastic-drying-knowledge-center\/resin-drying-basics\/what-is-ficks-law-resin-drying\/","og_site_name":"Plastic Knowledge Center","article_modified_time":"2026-10-22T18:25:50+00:00","og_image":[{"url":"https:\/\/www.novatec.com\/knowledge-center\/wp-content\/uploads\/2026\/10\/kc-oct21-pellet-moisture-diffusion-cross-section.webp","type":"","width":"","height":""}],"twitter_card":"summary_large_image","twitter_misc":{"Est. reading time":"17 minutes"},"schema":{"@context":"https:\/\/schema.org","@graph":[{"@type":"WebPage","@id":"https:\/\/www.novatec.com\/knowledge-center\/plastic-drying-knowledge-center\/resin-drying-basics\/what-is-ficks-law-resin-drying\/","url":"https:\/\/www.novatec.com\/knowledge-center\/plastic-drying-knowledge-center\/resin-drying-basics\/what-is-ficks-law-resin-drying\/","name":"Fick\u2019s Law and Plastic Resin Drying | Novatec","isPartOf":{"@id":"https:\/\/www.novatec.com\/knowledge-center\/#website"},"primaryImageOfPage":{"@id":"https:\/\/www.novatec.com\/knowledge-center\/plastic-drying-knowledge-center\/resin-drying-basics\/what-is-ficks-law-resin-drying\/#primaryimage"},"image":{"@id":"https:\/\/www.novatec.com\/knowledge-center\/plastic-drying-knowledge-center\/resin-drying-basics\/what-is-ficks-law-resin-drying\/#primaryimage"},"thumbnailUrl":"https:\/\/www.novatec.com\/knowledge-center\/wp-content\/uploads\/2026\/10\/kc-oct21-pellet-moisture-diffusion-cross-section.webp","datePublished":"2026-10-22T08:47:27+00:00","dateModified":"2026-10-22T18:25:50+00:00","description":"See how Fick\u2019s Law explains moisture diffusion in plastic pellets, why temperature controls drying speed, and how dry air sustains the moisture gradient.","breadcrumb":{"@id":"https:\/\/www.novatec.com\/knowledge-center\/plastic-drying-knowledge-center\/resin-drying-basics\/what-is-ficks-law-resin-drying\/#breadcrumb"},"inLanguage":"en-US","potentialAction":[{"@type":"ReadAction","target":["https:\/\/www.novatec.com\/knowledge-center\/plastic-drying-knowledge-center\/resin-drying-basics\/what-is-ficks-law-resin-drying\/"]}]},{"@type":"ImageObject","inLanguage":"en-US","@id":"https:\/\/www.novatec.com\/knowledge-center\/plastic-drying-knowledge-center\/resin-drying-basics\/what-is-ficks-law-resin-drying\/#primaryimage","url":"https:\/\/www.novatec.com\/knowledge-center\/wp-content\/uploads\/2026\/10\/kc-oct21-pellet-moisture-diffusion-cross-section.webp","contentUrl":"https:\/\/www.novatec.com\/knowledge-center\/wp-content\/uploads\/2026\/10\/kc-oct21-pellet-moisture-diffusion-cross-section.webp","width":1200,"height":675,"caption":"Cross-section of a plastic pellet with moisture concentrated in the core and diffusing toward the surface"},{"@type":"BreadcrumbList","@id":"https:\/\/www.novatec.com\/knowledge-center\/plastic-drying-knowledge-center\/resin-drying-basics\/what-is-ficks-law-resin-drying\/#breadcrumb","itemListElement":[{"@type":"ListItem","position":1,"name":"Home","item":"https:\/\/www.novatec.com\/knowledge-center\/"},{"@type":"ListItem","position":2,"name":"Plastic Drying Knowledge Center","item":"https:\/\/www.novatec.com\/knowledge-center\/plastic-drying-knowledge-center\/"},{"@type":"ListItem","position":3,"name":"Drying Basics","item":"https:\/\/www.novatec.com\/knowledge-center\/plastic-drying-knowledge-center\/resin-drying-basics\/"},{"@type":"ListItem","position":4,"name":"What Is Fick&#8217;s Law, and What Does It Have to Do With Drying Plastic?"}]},{"@type":"WebSite","@id":"https:\/\/www.novatec.com\/knowledge-center\/#website","url":"https:\/\/www.novatec.com\/knowledge-center\/","name":"Plastic Knowledge Center","description":"Best  Knowledge Center &amp; Practices for Plastic Processors","publisher":{"@id":"https:\/\/www.novatec.com\/knowledge-center\/#organization"},"potentialAction":[{"@type":"SearchAction","target":{"@type":"EntryPoint","urlTemplate":"https:\/\/www.novatec.com\/knowledge-center\/?s={search_term_string}"},"query-input":{"@type":"PropertyValueSpecification","valueRequired":true,"valueName":"search_term_string"}}],"inLanguage":"en-US"},{"@type":"Organization","@id":"https:\/\/www.novatec.com\/knowledge-center\/#organization","name":"Novatec, Inc.","url":"https:\/\/www.novatec.com\/knowledge-center\/","logo":{"@type":"ImageObject","inLanguage":"en-US","@id":"https:\/\/www.novatec.com\/knowledge-center\/#\/schema\/logo\/image\/","url":"https:\/\/www.novatec.com\/knowledge-center\/wp-content\/uploads\/2024\/08\/novatec_400x266.Logio_.jpg","contentUrl":"https:\/\/www.novatec.com\/knowledge-center\/wp-content\/uploads\/2024\/08\/novatec_400x266.Logio_.jpg","width":400,"height":266,"caption":"Novatec, Inc."},"image":{"@id":"https:\/\/www.novatec.com\/knowledge-center\/#\/schema\/logo\/image\/"}}]}},"uagb_featured_image_src":{"full":false,"thumbnail":false,"medium":false,"medium_large":false,"large":false,"1536x1536":false,"2048x2048":false,"gform-image-choice-sm":false,"gform-image-choice-md":false,"gform-image-choice-lg":false},"uagb_author_info":{"display_name":"Novatec","author_link":"https:\/\/www.novatec.com\/knowledge-center\/author\/novatec\/"},"uagb_comment_info":0,"uagb_excerpt":"RESIN DRYING What Is Fick&#8217;s Law, and What Does It Have to Do With Drying Plastic? By Mark Haynie and [&hellip;]","_links":{"self":[{"href":"https:\/\/www.novatec.com\/knowledge-center\/wp-json\/wp\/v2\/pages\/6695","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.novatec.com\/knowledge-center\/wp-json\/wp\/v2\/pages"}],"about":[{"href":"https:\/\/www.novatec.com\/knowledge-center\/wp-json\/wp\/v2\/types\/page"}],"author":[{"embeddable":true,"href":"https:\/\/www.novatec.com\/knowledge-center\/wp-json\/wp\/v2\/users\/5"}],"replies":[{"embeddable":true,"href":"https:\/\/www.novatec.com\/knowledge-center\/wp-json\/wp\/v2\/comments?post=6695"}],"version-history":[{"count":18,"href":"https:\/\/www.novatec.com\/knowledge-center\/wp-json\/wp\/v2\/pages\/6695\/revisions"}],"predecessor-version":[{"id":6767,"href":"https:\/\/www.novatec.com\/knowledge-center\/wp-json\/wp\/v2\/pages\/6695\/revisions\/6767"}],"up":[{"embeddable":true,"href":"https:\/\/www.novatec.com\/knowledge-center\/wp-json\/wp\/v2\/pages\/1029"}],"wp:attachment":[{"href":"https:\/\/www.novatec.com\/knowledge-center\/wp-json\/wp\/v2\/media?parent=6695"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}