Extrusion process

Details Extrusion process Extrusion process

B - Operations, Transporting

29

C

18/794

B29C 47/38 (2006.01) B29C 47/00 (2006.01) B29C 47/10 (2006.01)

Patent

CA 1070466

EXTRUSION PROCESS Abstract of Disclosure -- A process for extruding thermoplastic elastomeric films using a single screw extruder to extrude a particular type of a potentially sticky dry particulate mixture compris- ing relatively high molecular weight thermoplastic elastomer particles and relatively low molecular weight resin particles wherein the particulate mix- ture is fed starved, advanced axially, and prevented from sticking to the screw by mechanically displacing the mixture rotatively with respect to the screw in a prescribed portion of the feed section of the extruder, thereby preventing surging or uneven extrusion due to irregular feeding of the potentially sticky mixture.

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