Molding method and apparatus using a solid flowable, polymer med

Details Molding method and apparatus using a solid flowable, polymer med Molding method and apparatus using a solid flowable, polymer med

1988-05-26

1990-07-10

Silbaugh, Jan H.

Plastic and nonmetallic article shaping or treating: processes

Mechanical shaping or molding to form or reform shaped article

To produce composite, plural part or multilayered article

264313, 264320, 419 1, 419 66, 419 68, 425 78, 425383, 425384, B29C 4302

Patent

active

049405632

ABSTRACT:
An article is molded by contacting it with a solid polymer medium, such as an especially low strength unfilled silicone rubber which is solid and able to flow readily. Thermal expansion of the medium or mechanical force is used to create molding pressure and thereby provides a substantially uniform pressure on the article precursor. Various temperature and pressure cycles can be attained; constant high pressures can be maintained on the article precursor during cooldown, optionally aided by flowing of medium to and from a vessel in which the article precursor is being molded. The method is particularly adapted to molding filler or fiber reinforced thermosetting polymer composite articles.

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