Stock material or miscellaneous articles – Structurally defined web or sheet – Discontinuous or differential coating – impregnation or bond
Patent
1992-06-10
1993-03-30
Van Balen, William J.
Stock material or miscellaneous articles
Structurally defined web or sheet
Discontinuous or differential coating, impregnation or bond
428265, 4283044, 4283191, 4283193, 428413, 428414, B32B 326
Patent
active
051982862
ABSTRACT:
According to the present invention there is provided a panel-reinforcing sheet material having a multi-layered structure consisting of a first layer, a second layer and, optionally, a third layer, the first layer consisting of a foamable composition comprising, as essential components, (A) epoxy resin, (B) a rubber elastomer or a halogen-free powder thermoplastic resin of 150 .mu.m or less in average particle diameter, (C) a plasticizer, (D) a high-temperature-decomposition type blowing agent and (E) a heat-activaiton type hardener for epoxy resin, the component (A)/component (B) weight ratio being 0.2-5, the second layer consisting of a cloth, and the third layer consisting of a thin metal film of 50 .mu.m or less in thickness. This sheet material has good adhesion to oily surfaces and, when subjected to blowing and hardening, gives a sheet of good heat resistance, and can therefore be suitably used for the reinforcement of vehicle outer panel before electrodeposition.
REFERENCES:
patent: 4378395 (1983-03-01), Asoshina et al.
patent: 4399174 (1983-08-01), Tanaka et al.
Kagoshima Yutaka
Kobayashi Takeo
Nagase Toshio
Nippon Zeon Co. Ltd.
Van Balen William J.
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