Method for producing injection-molded and in-mold decorated article and mold for injection molding with in-mold decoration

A manufacturing method for an injection-molded and in-mold decorated article, comprising:

• setting a decorating film between a first mold element and a second mold element placed in opposition to each other so that a molding space is defined by the decorating film and the first mold element, the molding space including a product molding space and a resin-discharging-use molding space which is formed so as to be adjacent to and communicative with at least part of a periphery of the product molding space and into which molten molding resin is let to flow for discharge of the molding resin from the product molding space;
• injecting the molten molding resin into the product molding space;
• discharging part of the injected molding resin from the product molding space into the resin-discharging-use molding space;
• completing filling of the molding resin into the product molding space and the resin-discharging-use molding space;
• and
• solidifying the molding resin filled in the molding space while decorating a surface of the molding resin with the decorating film, so that the injection-molded and in-mold decorated article is manufactured.

A mold for injection-molding with in-mold decoration for manufacturing an injection-molded and in-mold decorated article, comprising:

• a first mold element;
• and
• a second mold element which is placed in opposition to the first mold element with setting a decorating film between the both mold elements,
• the first mold element comprising:
• a product molded article forming portion which is a recessed portion formed on a surface of the first mold element, for defining a product molding space between the product molded article forming portion and the decorating film with setting between the elements, the product molding space is part of a molding space and into which molten molding resin is injected;
• and
• a discharge-space molded article forming portion which is a recessed portion formed on the surface of the first mold element, for defining a resin-discharging-use molding space between the discharge-space molded article forming portion and the decorating film with setting between the elements, the resin-discharging-use molding space is part of the molding space and is formed so as to be adjacent to and communicative with at least part of a periphery of the product molding space and into which part of the molding resin injected into the product molding space is let to flow and discharged from the product molding space,
• wherein with defining the product molding space and the resin-discharging-use molding space by setting the decorating film between the both mold elements, part of the molding resin injected into the product molding space is discharged from the product molding space into the resin-discharging-use molding space, and then the molding resin filled in the product molding space and the resin-discharging-use molding space is solidified while decorating a surface of the molding resin with the decorating film, so that the injection-molded and in-mold decorated article is manufactured.