| 摘要 |
PURPOSE:To reduce the production cost by a method in which the sheet in which the woven cloth or unwoven cloth of inorganic fiber or organic fiber, etc., is coated with the method of low melting point in the shape of an electric circuit, is inserted in a mold, and said mold is filled with plastic material. CONSTITUTION:The woven cloth or the unwoven cloth produced by using glass fiber or organic fiber is coated with suitable metallic amount into a necessary shape by using the spray gun of metal with the melting point of 47-300 deg.C, whereby an aimed sheet is made. Said sheet is fitted into the mold for molding thermoplastic resin. When the mold is filled with the material melted at high temperature, the metallic particle coated with resin is instantaneously softened by the heat of the resin material at high temperature, while the metallic particle is pushed against the surface of the mold. Further, the metal and fiber material melted and softened by the material-filling pressure of the thermoplastic resin in injection molding are pushed against the mold wall with high pressure, whereby the metal becomes a metallic film and is cooled on the mold surface. Consequently, the film of conductive circuit excellent in uniformity and adhesion may be molded on the surface of the plastic. |
