High output extruder screw

Details High output extruder screw High output extruder screw

B - Operations, Transporting

29

C

18/733

B29C 47/60 (2006.01)

Patent

CA 1102073

HIGH OUTPUT EXTRUDER SCREW Abstract of the Disclosure A high output extruder screw which produces high throughputs and increased melting efficiency. The screw has a feed, transition and a meter section. The transition section includes a series of alternating compression and relief zones. Each compression zone has a decreasing channel depth and each relief zone has an increasing channel depth. This promotes rapid melting of the polymer while maintaining low extrudate tempera- tures and allows higher screw speeds to increase throughput. - 1 -

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