Molding articles of thermoplastic rubber

Details Molding articles of thermoplastic rubber Molding articles of thermoplastic rubber

1980-05-16

1982-06-08

Pavelko, Thomas P.

Plastic and nonmetallic article shaping or treating: processes

Utilizing special inert gaseous atmosphere or flushing mold...

B29F 100

Patent

active

043339018

ABSTRACT:
Articles having a relatively smooth and homogeneous surface appearance may be injection molded of thermoplastic rubber on relatively low-injection-speed-and-pressure equipment. To reduce or eliminate the hairy or frosted surface appearance which otherwise commonly occurs, the mold cavity is pressurized with a relatively moisture-free compressed gas before and during a majority of the injection phase of the molding cycle.

REFERENCES:
patent: 3044118 (1962-07-01), Bernhardt
patent: 3789093 (1974-01-01), Bose

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