Method for the injection molding and successive decoration molding for a molded product

Abstract

Injection molding of a product and decoration molding of a surface of the molded product are performed using individual cavity molds. A decorative film can be molded efficiently with a thermosetting coating material under suitable temperature control regardless of the shape of the molded product. An injection cavity mold and a decoration cavity mold are employed. The injection cavity mold is set at a hardening temperature of a thermoplastic resin. The decoration cavity mold is set at a thermosetting temperature of a coating material. A molded product is formed by injection molding in the injection cavity mold. The injection molded product is located within the decoration cavity mold to create a space as a cavity for decoration molding between an inner surface of the decoration cavity mold and a surface of the injection molded product. A decorative film is molded over the surface of the injection molded product by injecting a decorative coating material composed of a liquid thermosetting composition into the cavity under pressure. The coating material is composed of a liquid thermosetting composition that substantially contains no volatile component having a boiling point below the thermosetting temperature set on the cavity mold for decoration molding.

Dependencies are inferred from the claim text.