Plastic and nonmetallic article shaping or treating: processes – Pore forming in situ
Patent
1976-05-17
1977-12-27
Anderson, Philip
Plastic and nonmetallic article shaping or treating: processes
Pore forming in situ
264 51, 264126, 264DIG65, B29D 2700
Patent
active
040655318
ABSTRACT:
Apparatus for molding products from polymeric material comprising cooperating mold elements forming a mold cavity for receiving polymeric material to be molded and means for optionally introducing steam into thermoconductive relationship with the respective mold elements in parallel and in series. Also a method of molding products from polymeric material comprising introducing polymeric material into a mold cavity formed by cooperating mold elements, causing steam to flow in thermoconductive relationship with the respective mold elements in parallel during a portion of the molding cycle and causing steam to flow in thermoconductive relationship with the respective mold elements in series during another portion of the molding cycle.
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Anderson Philip
The Alan I W Frank Corporation
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