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AssigneeSumitomo Chemical Company, Limited
InventorsMasahito Matsumoto, Nobuhiro Usui
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A mold for producing a hollow thermoplastic resin molded article includes a set of female and male mold members and a gas passage provided in at least one of the mold members which opens directly onto a surface of the mold member. Alternatively, a gas introducing member for introducing gas into a cavity may be provided in communication with the gas passage such that the tip of the gas introducing member does not protrude into the cavity of the mold. A lagging material, such as an insulating material or a local heater is preferably provided in the area of the mold adjacent the gas passage or gas introducing member. A method of producing a thermoplastic resin molded article using a mold of this nature is also disclosed.
A method of producing a hollow thermoplastic resin molded article having a laminated skin material, the method comprising the steps of:
A method of producing a hollow thermoplastic resin molded article, the method comprising the steps of:
Dependencies are inferred from the claim text.