Plastic article or earthenware shaping or treating: apparatus – Stock pressurizing means operably associated with downstream... – Including heating or cooling means
Patent
1976-03-31
1977-07-26
Baldwin, Robert D.
Plastic article or earthenware shaping or treating: apparatus
Stock pressurizing means operably associated with downstream...
Including heating or cooling means
198658, 425447, D01D 502
Patent
active
040380130
ABSTRACT:
Apparatus is disclosed for extruding filaments from synthetic polymeric particulate material which is conveyed to the melting area by means including a cylindrical barrel having an internal wall provided with a screw thread, and a rotating member mounted within the barrel being of a polygonal cross-section having a transverse dimension closely approximate to the inner diameter of the screw flights of the screw thread so as to allow movement of the material in a direction of the screw axis but to substantially prevent rotation of the material about the axis relative to the rotating member.
REFERENCES:
patent: 2810159 (1957-10-01), Teichmann
patent: 3753661 (1973-08-01), Simons
Baldwin Robert D.
Ernest Scragg & Sons Limited
Striker Michael J.
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