Injection molding of ultra high molecular weight polyethylene

Details Injection molding of ultra high molecular weight polyethylene Injection molding of ultra high molecular weight polyethylene

1977-12-08

1979-08-14

Hoag, W. E.

Plastic and nonmetallic article shaping or treating: processes

Forming articles by uniting randomly associated particles

With liberating or forming of particles

264328, B29C 502, B29F 100, B29F 500

Patent

active

041645316

ABSTRACT:
Process for injection molding ultra high molecular weight polyethylene by injecting the ultra high molecular weight polyethylene into a cavity having a volume 1.5-3.0 times that of the injected polyethylene at a shear rate of at least 50,000 sec..sup.-1 measured at the gate of the injection nozzle and then compressing the cavity to a volume less than 1.5 times that of the injected polyethylene.

REFERENCES:
patent: 3036340 (1962-05-01), Waddell
patent: 3134830 (1964-05-01), Roelen
patent: 3660552 (1972-05-01), Hinz et al.

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