Thermosetting resin transfer molding process

Details Thermosetting resin transfer molding process Thermosetting resin transfer molding process

1995-04-07

1998-02-17

Heitbrink, Jill L.

Plastic and nonmetallic article shaping or treating: processes

Mechanical shaping or molding to form or reform shaped article

Shaping against forming surface

26432815, B29C 4574

Patent

active

057188645

ABSTRACT:
A method of resin transfer molding with a thermoset resin material and including the steps of forming a mold defining a cavity, communicating a hollow sprue with the mold cavity, filling the mold cavity and the sprue with unpolymerized resin and catalyst mixture under pressure, refrigerating the sprue adjacent to the mold cavity so as to delay polymerization of the resin in the sprue to maintain a pressure path through the sprue to the mold cavity during the continued application of pressurized mixture to the sprue, and maintaining the refrigerating of the mixture in the sprue until after at least commencement of polymerization of the resin in the mold cavity to form a molded part.

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patent: 5187001 (1993-02-01), Brew
patent: 5445781 (1995-08-01), Addeo et al.
Emmerich, Anthony, "Liquid Injection Molding: Where It Stands Today", Plastics Technology, pp. 91-96, Apr. 1980.

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