Manufacturing method null of the lamination metallic plate which is superior in spot

摘要

PURPOSE: To provide a method for manufacturing laminated metal sheet, in the resin layer of which electrically conductive metal powder is dispersed easily,: uniformly and stably. ;CONSTITUTION: Electrically conductive metal powder, the hardness of which is more than or equal to that of metal sheets 1 and 7 is kneaded in advance with kneading device and then uniformly filled in viscoelastic resin under the condition that the particle diameter D of the electrically conductive powder in the viscoelastiic resin is set to be D≤2.0T to tire coating thickness T of the resin, which contains 3-30wt.% of the electrically conductive metal powder with particle diameter satisfying the relationship of 1.0T≤D≤2.0T among the electrically conductive metal powder to the total amount of the viscoelastic resin, is applied with knife-coater type coater onto one of the metal sheets. Next, with pressure rollers 8 and 9, the one rnetal sheet coated with tire resin and the other metal sheet are bonded together so as to obtain laminated sheet 10 in order to produce the laminated metal sheet excellent in spot-weldability.;COPYRIGHT: (C)1993,JPO&Japio