Resin injection molding die and method for producing resin molded product
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United States of America Patent
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Jul 5, 2016
Grant Date -
Aug 6, 2015
app pub date -
Jan 12, 2015
filing date -
Jan 31, 2014
priority date (Note) -
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Abstract
A molding die is devised to suppress the formation of a fragile layer, thereby ensuring stable production of a resin molded body having remarkably improved adhesion of a plating film. 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 the side opposite to a design surface to which metal plating is to be applied, along the main flowing direction of a molten resin and in a direction crossing the main flowing direction. Since the flow of the molten resin changes due to the stepped parts and the influence thereof extends even to the vicinity of the design surface, the formation of a fragile layer is suppressed.
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