Compression molding of composite parts on hot mold surfaces with

Details Compression molding of composite parts on hot mold surfaces with Compression molding of composite parts on hot mold surfaces with

1990-08-17

1991-09-10

Woo, Jay 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

264322, 264348, 264DIG65, 425 89, 249112, B29C 4304, B29C 4352, B29C 4334

Patent

active

050471988

ABSTRACT:
A molding system utilizes a cold mold with a large thermal mass and contoured thin mold inserts with a low thermal mass. A composite sheet blank of glass fibers in a thermoplastic matrix resin is placed between the inserts, heated and then transported to the cold mold. The composite sheet is pressed in the cold mold between the mold inserts to flow form and then cool the part. The mold inserts keep the surfaces of the composite sheet hot during the forming process, thereby enabling the matrix resin to flow and form smooth surfaces.

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Plastics World, Aug. 1987, M. Berins, "News Watch", p. 13.
Polym. Plast. Tech. Eng., 26(1); 1-23 (1987); "A New Approach to Low Thermal Inertia Molding", by R. R. Wadhwa and B. H. Kim, pp. 1-22.

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