Method of injection molding thermoplastic resinous products subs

Details Method of injection molding thermoplastic resinous products subs Method of injection molding thermoplastic resinous products subs

1979-02-07

1981-10-20

Anderson, Philip

Plastic and nonmetallic article shaping or treating: processes

Pore forming in situ

Composite article making

264 53, 264 54, 26432816, 26432817, 264DIG5, 264DIG83, B29D 2700

Patent

active

042960550

ABSTRACT:
Injection moldings have excellent surface gloss and freedom from sink marks are obtained using a pressurized mold and molding composition containing a volatile fluid foaming agent, a thermally decomposable foaming agent and a finely divided nucleating agent.

REFERENCES:
patent: 3200176 (1965-08-01), Baxter
patent: 3268635 (1966-08-01), Kraus et al.
patent: 3399098 (1968-08-01), Omoto et al.
patent: 3960996 (1976-06-01), Balevski et al.

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