Method of producing fiber reinforced plastic moldings

Details Method of producing fiber reinforced plastic moldings Method of producing fiber reinforced plastic moldings

1991-06-13

1993-04-13

Hoag, Willard

Plastic and nonmetallic article shaping or treating: processes

With printing or coating of workpiece

Coating or impregnating workpiece before molding or shaping...

264157, 264171, 264324, B29C 4302, B29C 4706

Patent

active

052020711

ABSTRACT:
A method of producing fiber reinforced plastic moldings. The method includes the steps of: supplying a thermosetting resin component and a thermoplastic resin component into a twin screw extruder; kneading the thermosetting resin component and the thermoplastic resin component into each other in the extruder to produce a fused material in which fine particles of the thermoplastic resin component are micro-dispersed in a matrix of the thermosetting resin component; suppling a liquid monomer into the extruder so that the liquid monomer is mixed with the fused material so as to adjust the viscosity of the fused material to be low; suppling a reaction initiator into the extruder so that the reactive initiator is mixed with the fused material at a temperature not higher than a reaction initiation temperature so as to produce a reactive kneaded material; continuously discharging the reactive kneaded material from a die of the extruder so as to apply the reactive kneaded material onto a long fiber mat; simultaneously pressing and cooling the mat coated with the reactive kneaded material to shape the mat into a sheet; cutting the sheet into pieces having a predetermined length; shaping and curing the thus cut pieces into moldings of a desired form by means of a press molding machine.

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Plastics, vol. 36, No. 8, p. 72, 1985 (Japanese Language article without English translation).
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