Method for forming a polymeric mold

Details Method for forming a polymeric mold Method for forming a polymeric mold

1989-02-06

1990-07-10

Woo, Jay H.

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

264309, 249135, B29C 4108

Patent

active

049405616

ABSTRACT:
A method of forming a coating useful for forming casting molds including agitating a quantity of polyester resin and admixing into the resin a quantity of aluminum powder, storing the mixture for 12 to 24 hours, introducing a catalyst into the mixture and spraying the mixture onto an object defining a mold cavity of a casting mold. The atomized aluminum powder should have a weight ratio of 10 to 50 percent of the resin and should have a ration of 4 times 200 mesh/ 1 times 400 mesh+2 times 200 mesh/1 times 400 mesh.

REFERENCES:
patent: 4073049 (1978-02-01), Lint
patent: 4366202 (1982-12-01), Borovsky
patent: 4740343 (1988-04-01), Gaku

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