| 摘要 |
PROBLEM TO BE SOLVED: To obtain a conductive resin molding body having high shielding effect of electromagnetic wave, excellent appearance, a molding cycle time whose increase is extremely small by covering a mold wall face which forms a mold cavity of a main mold with an insulating layer formed of a heat resisting polymer having a specified thermal conductivity and a specified thickness. SOLUTION: Injection molding is performed by using a mold, which is formed in such a manner that a mold wall face which forms a mold cavity of a main mold made of metal is covered with an insulating layer to a thickness of 0.01-2mm consisting of a heat resisting polymer having a thermal conductivity of 0.002cal/cm.sec. deg.C or below. A thermoplastic resin as a base is selected from a polyphenylene ether resin, a polystyrene resin, an ABS resin, a polycarbonate resin, and a blend thereof. A conductive filler is selected from metal fiber, metal foil, metal powder, carbon powder, glass fiber having surface coated with metal, and mica plated with metal. |
