| 摘要 |
PROBLEM TO BE SOLVED: To integrally and firmly form a molding using an intermediate resin layer having compatibility with both an inner molding main body and a transparent resin layer on a surface, for use as the guide molding part, window molding part and roof molding part of an automobile. SOLUTION: A molding main body is made from polypropylene resin and an ethylene-methacrylic acid copolymer or a composition of its metal salt is used for a transparent resin layer on a surface. An intermediate resin layer of an olefinic thermoplastic elastomer having compatibility with both the molding main body and the transparent resin layer is interposed and melted between the molding main body and the transparent resin layer. Further, the polypropylene resin of the molding main body is injected into a first extrusion molding machine which forms the molding, the olefinic resin of the intermediate resin layer is injected into a second extrusion molding machine, and the ethylene-methacrylic acid copolymer or the composition of its metal salt which forms the transparent resin layer is injected into a third extrusion molding machine. The three extrusion molding machines are actuated at the same time and the entire molding is fusion formed inside one die.
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