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AssigneeSumitomo Chemical Company, Limited
InventorsTakahisa Hara, Masahito Matsumoto, Nobuhiro Usui, Shigeyoshi Matubara, Kazuo Hieda
Estimating the term…
A molded article of a thermoplastic resin with good apperance which may have a skin material is produced by providing upper and lower molds having a product part-molding section and a non-product part-molding section, supplying a melt of a thermoplastic resin in a cavity of the molds or a space between the skin material and either one of the upper and lower molds through a resin melt passage which is formed in a wall of one of the molds and has an opening for supplying the melt in the non-product part-molding section when a clearance of the cavity is larger than a thickness of a finally produced article, closing the molds to effect press molding, cooling the molds.
A method for producing a molded article of a thermoplastic resin, comprising;
A method for producing a multilayer molded article comprising a resin core and a skin material provided on said resin body, which method comprises providing upper and lower molds having a product part-molding section and a non-product part-molding section, placing a skin material between said upper and lower molds, supplying a resin melt in a space defined by said skin material and one of said upper and lower molds through a resin melt passage which is formed in a wall of said one mold and has an opening for supplying said melt in said non-product part-molding section when a pre-closing clearance of said cavity is larger than a thickness of a finally produced article, closing the molds to effect press molding, forming a post-closing clearance between said upper mold and said lower mold at a boundary between said product part-molding section and said non-product part molding section, said post-closing clearance being wider than a thickness of the skin material, and cooling the molds.
Dependencies are inferred from the claim text.