Process for producing polytetrafluoroethylene molded article

Details Process for producing polytetrafluoroethylene molded article Process for producing polytetrafluoroethylene molded article

1993-12-03

1995-07-04

Theisen, Mary Lynn

Plastic and nonmetallic article shaping or treating: processes

Forming articles by uniting randomly associated particles

Autogenously or by activation of dry coated particles

264570, B29C 4310

Patent

active

054297826

ABSTRACT:
A process for producing a polytetrafluoroethylene molded article by isostatic molding is disclosed, the isostatic molding being conducted under a high pressure of from 1,500 to 10,000 kg/cm.sup.2. The resulting molded article is isotropic as regards coefficient of thermal expansion and exhibits improved frictional resistance.

REFERENCES:
patent: 4102966 (1978-07-01), Duperray et al.
patent: 4623505 (1986-11-01), Traut
patent: 4942007 (1990-07-01), Kunimoto et al.
patent: 4997608 (1991-03-01), Haldeman et al.
patent: 5032335 (1991-07-01), Wilson

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