Moulding process

Details Moulding process Moulding process

1993-11-18

1995-09-19

Vargot, Matheu D.

Plastic and nonmetallic article shaping or treating: processes

Mechanical shaping or molding to form or reform shaped article

Shaping against forming surface

264102, 2643288, 26432816, 26432818, 26433112, 264349, B29C 4573

Patent

active

054513626

ABSTRACT:
The present invention provides a process for making a cured plastics moulding by introducing a pre-heated curable resin composition to a hotter mould which is at a temperature high enough to initiate curing of the resin, and supplying further resin under pressure to compensate for shrinkage of the composition, wherein the curable resin is an epoxy resin formulation comprising an epoxy resin containing more than one epoxide group per molecule on average, an acid anhydride hardener, an accelerator and a filler, the epoxy resin, hardener and accelerator being chosen so that the formulation is stable at 25.degree. C. for at least 14 days.

REFERENCES:
patent: 3063965 (1962-11-01), Colclongh
patent: 3777000 (1973-12-01), Kusenberg et al.
patent: 3793247 (1974-02-01), Fleming et al.
patent: 4066625 (1978-01-01), Bolger
patent: 4657992 (1987-04-01), Brennan et al.
patent: 5064585 (1991-11-01), Cooper et al.
patent: 5104604 (1992-04-01), Gallo
patent: 5242635 (1993-09-01), Matsumoto et al.
Derwent Abst. 88-216706.
Patent Abstracts of Japan, vol. 16, No. 76, JP3269011, Nov. 1991.
Patent Abstracts of Japan, vol. 12, No. 433, JP63161018, Jul. 1988.
Patent Abstracts of Japan, vol. 15, No. 313, JP3115423, May 1991.

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