Method of manufacturing a prepreg

Details Method of manufacturing a prepreg Method of manufacturing a prepreg

1993-11-29

1995-02-07

Simmons, David A.

Adhesive bonding and miscellaneous chemical manufacture

Methods

Surface bonding and/or assembly therefor

156176, 156433, 156247, 156249, 1563074, 156237, 156314, C09J 502, B29B 1508, B29B 1116, B29K10508

Patent

active

053873017

ABSTRACT:
In the prepreg manufacuturing method according to the present invention, at least one of a first and second release papers is coated with a matrix resin having a low viscosity. Reinforcing fibers are supplied in between the release papers and arranged on the matrix resin layer. Then, the reinforcing fibers are impregnated with the matrix resin by heating and pressing the release papers. After separating one of the papers, a room-temperature curing type hardener is applied onto the matrix resin layer to form a high viscosity layer on a surface layer of the matrix resin layer. Thereafter, a cover film is laid over the surface layer to make a prepreg.

REFERENCES:
patent: 4372800 (1983-02-01), Oizumi
patent: 4543145 (1985-09-01), Schnell
patent: 4662973 (1987-05-01), Gotou
patent: 4769202 (1988-09-01), Eroskey
patent: 5201979 (1993-04-01), Koba
Database WPI, Section CH, Week 9218, Derwent Publications Ltd. Class A11, AN 92-147403 & JP-A-4 089 209 Mar. 1992.

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