Patent ID: 7914898

Claim:
A resin-coated metal plate for use in perforating a printed-wiring board, comprising: a metal base plate and a thermoplastic resin film comprising a thermoplastic resin, the thermoplastic resin film being formed on at least one of opposite surfaces of said metal base plate so as to cover thereover, said thermoplastic resin being substantially water-insoluble, wherein said thermoplastic resin is a resin showing a melting peak and is at least one selected from the group consisting of an ethylene-ethyl acrylate copolymer resin, an ethylene-vinyl acetate copolymer resin and an ethylene-methacrylate copolymer resin, and wherein said thermoplastic resin has: a melting peak temperature measured according to JIS K7121 ranging from 60° C. to 100° C.; a melt viscosity ranging from 1×10 3 poise to 1×10 4 poise under a shear rate of 200 mm/sec, and from 5×10 2 poise to 5×10 3 poise under a shear rate of 3000 mm/sec, in the state when said thermoplastic resin is molten at 150° C.