Process for forming plastic articles

Details Process for forming plastic articles Process for forming plastic articles

1977-04-02

1979-07-17

White, Robert F.

Plastic and nonmetallic article shaping or treating: processes

Forming articles by uniting randomly associated particles

With reshaping or surface embossing of formed article

264120, 264126, B29C 300

Patent

active

041615026

ABSTRACT:
An improvement in the process of forming plastic articles wherein such articles are forged from a compression formed briquette of resinous powder, such improvement comprising (1) compressing a resinous powder having lamellar crystalline nonspherulitic morphology into a substantially unoriented briquette having green strength, (2) removing the briquette from the compressing device and placing the briquette in a forging press wherein lubrication is provided between the contacting surfaces of the briquette and the forging press to permit plug flow, and (3) forging the briquette into a shaped article while maintaining the briquette at a temperature between the alpha-transition temperature and the melt temperature of the resinous powder.

REFERENCES:
patent: 2717419 (1955-09-01), Dickey
patent: 3336244 (1967-08-01), Rockoff
patent: 3414643 (1968-12-01), Collie
patent: 3662052 (1972-05-01), Nowak et al.

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