Extruder screw

Details Extruder screw Extruder screw

B - Operations, Transporting

29

C

18/733

B29C 47/62 (2006.01)

Patent

CA 1163075

EXTRUDER SCREW ABSTRACT OF THE DISCLOSURE An extruder screw having a root, a helical primary flight on the root and a helical barrier flight on the root and forming with the primary flight a solids channel and a melt channel. The width of the solids channel gradually decreases and the width of the melt channel gradually increases along an upstream zone of the melting section. The width of the channels gradually changes in a downstream zone of the melting section but substantially less than in the upstream zone.

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