Method of injection molding nitrile articles

Details Method of injection molding nitrile articles Method of injection molding nitrile articles

1976-08-26

1979-03-06

Woo, Jay H.

Plastic and nonmetallic article shaping or treating: processes

Vacuum treatment of work

To degas or prevent gas entrapment

264328, 425203, B29B 106, B29F 306

Patent

active

041431081

ABSTRACT:
An improved method for forming thermoplastic articles from high nitrile polymers by injection molding which method comprises initially charging the high nitrile polymer to a vacuum hopper system wherein a vacuum is applied and from which it is fed to a reciprocating screw injection molding machine for formation of said articles.

REFERENCES:
patent: 3481001 (1969-12-01), Stillhard
patent: 3499073 (1970-03-01), Sun
patent: 3563514 (1971-02-01), Shattuck
patent: 3642752 (1972-02-01), Sutter
patent: 3754851 (1973-08-01), Reilly et al.
patent: 3826477 (1974-07-01), Kunogi et al.
patent: 3848041 (1974-11-01), Adomaitis
patent: 3913796 (1975-10-01), Aoki
patent: 3992500 (1976-11-01), Kruder et al.
"Advances in Dry Blend Extrusion," N. T. Flathers et al. Modern Plastics, vol. 38, p. 210 5/1961.

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