Resin molding process utilizing a glass core

Details Resin molding process utilizing a glass core Resin molding process utilizing a glass core

1994-08-01

1996-05-14

Heitbrink, Jill L.

Plastic and nonmetallic article shaping or treating: processes

With step of making mold or mold shaping, per se

Utilizing surface to be reproduced as an impression pattern

249 61, 249134, 264257, 264317, 2643281, 26432816, 425DIG12, B29C 4514, B29C 4544, B29C 3338

Patent

active

055164773

ABSTRACT:
A molded article is prepared by forming a glass core, treating the glass core to induce residual stresses therein, inserting the core into a mold, injecting resin into the mold, curing the resin, fracturing the core to produce glass particles, and removing the glass particles from the molded article.

REFERENCES:
patent: 2078541 (1937-04-01), Monnier
patent: 2217734 (1940-10-01), Dreyfus
patent: 2757439 (1956-08-01), Burns
patent: 4094688 (1978-06-01), Wolf
patent: 4248817 (1981-02-01), Frank
patent: 4483700 (1984-11-01), Forker, Jr. et al.
patent: 5169590 (1992-12-01), Johnson et al.

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