| 摘要 |
PROBLEM TO BE SOLVED: To prevent a fragile layer from being formed by devising a molding die, thereby stably producing a resin molded body having remarkably improved adhesion of a plating film.SOLUTION: A plurality of stepped parts are formed so as to be spaced apart from each other on a second die surface which molds a back surface on a side opposite to a design surface to which metal plating is to be applied, along the main flowing direction of a molten resin. Stepped parts are taken as tapered step parts which gradually continue to the common die surface parts from a step surface. Demolding can be performed, and the flow of the molten resin changes according to the stepped parts, and the influence thereof extends even to the vicinity of the design surface, even if the second die surface is the one that extends to the demolding direction of the resin molded body. Thus the formation of a fragile layer is prevented. |
