Membrane

Membrane Dryers vs. Compressed Air Dryers

You cannot depend on “hit and miss” drying tactics and expect to produce high quality molded plastic parts.It is easy to get confused about the differences between Membrane Dryers for Drying Plastics and Compressed Air Dryers for Drying Plastics. There are a couple of big differences. For one thing, compressed air dryers typically reduce the dew point of the the incoming air by only 10 to 20 degrees F. That means if the incoming air is at a 40 degree dew point, your plastic pellets will only see “drying air” with a 20 or 30 degree dew point, despite the fact that resin manufacturers specify that most resins be dried by -40 degree dew point air.

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That means that in some geographic areas where it is typically humid, these compressed air dryers will not work very well at all.In climates that are typically dry in the winter but often humid during summer months, the compressed air dryer may work OK during the winter but have to be shut down during humid times in the Spring, Summer and Fall on humid days.

Compressed air dryers with a membrane produce -40 degree plastics drying air 24/7/365 regardless of the outdoor humidity.

The other big difference is the comparison of operating costs. Plain compressed air dryers use about 3 times as much compressed air as membrane dryers with a built-in membrane. Even compressed air dryers with add-on membranes use about 2.5 times as much compressed air as membrane dryers with built-in membranes.

You may save some money on the initial purchase of a compressed air dryer or one with an add-on membrane BUT your operating costs will be so much lower with the built-in membrane dryer that over a 10-year period, you will save 10′s of thousands of dollars to dry your plastic resins.

 

NovaDrier™ Membrane Resin Dryer

7-200 lb/hr (3-90 kg/hr)

Product Description

The patented, exclusive air flow design and proprietary membrane guarantees -40° dew point process air year round and uses 1/3 the compressed air of comparable, similar models.

    Features:

    • Constant -40° Dew Point Process Air
    • Uses Less Compressed Air Than Conventional Compressed Air Dryers or Add-On Membrane Models
    • Desiccant Free Operation
    • New, Easy-To-Use Control
    • -25 and up are also available as Portable Dry/Convey models complete with machine mount receiver, hopper loader hose, pick-up wand, stand and casters.
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NovaDrier™ Medical NDM-5 Membrane Resin Dryer

1-5 lb./hr (.45-2.2 kg/hr.)

Product Description

The NovaDrier is the most popular small resin dryer on the market and proven to dry ALL thermoplastic resins. With no moving parts maintenance is minimal and conventional compressed air dryers can’t match the drying performance as they never attain a -40° dew point and use up to 3X as much compressed air as the NovaDrier. Desiccant bed dryers can’t match the low-maintenance reliability

    Features:

    • Desiccant-free Membrane Drying of ALL Resins
    • Package Includes 12' Pendant, Microprocessor Control, Dewpoint Meter, 20 lb. Stainless Steel Hopper and HEPA Filter
    • No Moving Parts
    • Machine Mount Operation
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