Plastic and nonmetallic article shaping or treating: processes – Mechanical shaping or molding to form or reform shaped article – Shaping against forming surface
Patent
1975-10-09
1978-11-21
Anderson, Philip
Plastic and nonmetallic article shaping or treating: processes
Mechanical shaping or molding to form or reform shaped article
Shaping against forming surface
260 174R, 260 174CL, 260876R, 260876B, 260880B, 264 54, 264211, 264DIG5, 264DIG14, 264DIG83, B29D 100, C08L 5302
Patent
active
041266625
ABSTRACT:
An injection molded polymer having limited surface gloss is provided by preparing an admixture of an injection moldable polymer substrate and an additive chosen from among the group consisting of finely divided textile fibers, finely divided hydrocarbon polymers, and blowing agents and injection molding an article from the admixture. In the embodiment of the invention employing blowing agents the admixing is carried out at a temperature below that at which the blowing agent is activated and the injection molding is carried out at a temperature sufficient to activate the decomposition of the blowing agent.
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Anderson Philip
Phillips Petroleum Co., Inc.
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