PET Barrier Screw Has Internal Vacuum Vent.
Before now, barrier screws were used only with PET pellets, not powder, because pellets let volatiles escape back out the feed throat. Eastman's vented barrier screw reportedly permits higher throughputs of PET powder. The vented barrier screw can also be used for other hygroscopic resins like ABS.
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|Title Annotation:||lyethylene terephthalate|
|Comment:||PET Barrier Screw Has Internal Vacuum Vent.(lyethylene terephthalate)|
|Article Type:||Brief Article|
|Date:||Apr 1, 2001|
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