Process for fabricating articles from ultra high molecular weigh

Details Process for fabricating articles from ultra high molecular weigh Process for fabricating articles from ultra high molecular weigh

1977-11-07

1981-06-09

Michl, Paul R.

Plastic and nonmetallic article shaping or treating: processes

Mechanical shaping or molding to form or reform shaped article

Shaping against forming surface

249 82, 425546, B29F 100

Patent

active

042718511

ABSTRACT:
A process for fabricating articles from ultra high molecular weight (UHMW) polymer material is disclosed. The process comprises injecting melted UHMW polymer material into an evacuated compressible sectioned cavity mold and then compressing the sections of the mold to compensate for material shrinkage and to prevent internal laminations.

REFERENCES:
patent: 2668985 (1954-02-01), Babbitt
patent: 3036340 (1962-05-01), Waddell
patent: 3600486 (1971-08-01), Walker
patent: 3663512 (1972-05-01), Uebe
patent: 3665068 (1972-05-01), Duling
patent: 3937778 (1976-02-01), Tanaka
patent: 3946981 (1976-03-01), Frank
patent: 4164531 (1979-08-01), Shiraki

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