| 摘要 |
<p>PURPOSE:To provide the manufacture for electric circuit moldings usable as physical solid wiring circuit excellent in conductivity, by directly joining plural conductive moldings. CONSTITUTION:Resin compositions, composed by blending concuctive metallic fibers and low-melting point metal with thermoplastic resin, are injection molded by using a mold having a given shape, and straight or curved rodlike conductive molding 2 and 3, having a jointing part 1, like e.g. the combination of conical recessed and protuded parts, in one side end part, are formed respectively. Next, the joining part 1 of these moldings 2 and 3 are locally heated with hot air devices respectively to expose conductive metallic fibers from surfaces. Then the joining parts 1 of both the sides are engaged and pressure-contacted, and also is heated at temperature higher than the melting point of the thermoplastic resin and the low-melting point metal to be welded with an ultrasonic welding device.</p> |
