B - Operations – Transporting – 29 – C
Patent
B - Operations, Transporting
29
C
18/729
B29C 47/58 (2006.01) B29B 17/00 (2006.01)
Patent
CA 1142723
ABSTRACT OF THE DISCLOSURE A worm extruder for replastifying miscast plastic webs has a cylinder bore communicating with a receiving chamber at a feed opening, the chamber and the bore being provided with a plurality of longitudinal grooves for catching plastic strips wound about the extruder shaft upon feeding to the receiving chamber. Upon being snagged by the grooves, the strips are ground between a worm thread of the extruder shaft and a polished surface of the bore in which the catch grooves are disposed. The receiving chamber is asymmetrically formed with a peripheral sickle-shaped space extending in part into the cylinder bore toward a resin outlet, while the shaft is formed in the region of the chamber with a plurality of worm threads having equispaced notches. The walls of the chamber are polished.
359585
Borden Ladner Gervais Llp
Plastik-Maschinenbau G.m.b.h. & Co. Kg -Entwicklungsgesellschaft
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