Patent ID: 8568547

Claim:
A method of manufacturing a molded product, in which surroundings of metal plates spaced at specified intervals are covered with insulating polymer to insulate them electrically, comprising the steps of: arranging a spacer polymer part between the metal plates spaced at specified intervals, the spacer polymer part comprising a first sheet material composed of aromatic polymer and first bonding layers composed of a styrenic elastomer having a styrene block between which the first sheet material is provided, arranging mold polymer parts outside of outermost ones of the metal plates, each of the mold polymer parts comprising a second sheet material composed of insulating polymer and a second bonding layer composed of acid-modified polymer or epoxy-modified polymer in contact with respective outermost ones of the metal plates, hot-pressing molding a laminate of the metal plates, the spacer polymer part, and the mold polymer parts at a temperature higher than a melting point of each of the first bonding layers, the second bonding layers and the second sheet materials but lower than a melting point of the first sheet material, thereby melting the second sheet materials while securing the interval between the metal plates by the first sheet material, and covering the surroundings of the metal plates and the first sheet material with molded insulating polymer.