Method for the simultaneous curing of thermosetting resins

Details Method for the simultaneous curing of thermosetting resins Method for the simultaneous curing of thermosetting resins

1995-07-24

1999-05-25

Ortiz, Angela

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

2643284, 2643285, B29C 3110, B29C 3502, B29C 4502

Patent

active

059067829

ABSTRACT:
In resin transfer molding, each mold cavity is charged initially with a hot curing resin system, then while the first resin is still uncured, successively injecting one or more resin systems which push the previous systems to the periphery of the mold. Each of said successive resin system curing at a lower temperature then the preceding system. Thus each resin system cures progressively faster than the previously injected resin system such that all resin systems cure at substantially the same point in time.

REFERENCES:
patent: 2279208 (1942-04-01), Shaw
patent: 4123488 (1978-10-01), Lawson
patent: 4315724 (1982-02-01), Taoka et al.
patent: 4316869 (1982-02-01), Van Gasse
patent: 4701292 (1987-10-01), Valyi
patent: 4863665 (1989-09-01), Schad et al.
patent: 4931234 (1990-06-01), Schad et al.
patent: 5059361 (1991-10-01), Da Re'264255

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