| 摘要 |
PROBLEM TO BE SOLVED: To provide a thermoplastic resin molded product manufacturing method for manufacturing a molded product efficiently even when a resin is hard-to-mold. SOLUTION: A plurality of pressure-resistant chambers 3a and 3b are connected in parallel with a resin feed opening of an injection molding machine 6, and a gas impregnated resin is fed from one pressure-resistant chamber 3a into the injection molding machine 6, and simultaneously carbon dioxide gas is impregnated in the other pressure-resistant chamber 3b to manufacture a gas impregnated resin, and one pressure-resistant chamber 3a is changed over to the other pressure-resistant chamber 36 to feed the gas impregnated resin into the injection molding machine 6 continuously. The molding pressure can be reduced to a large extent particularly for a general-purpose thermoplastic resin and also a mold can be made smaller and the pressure distribution in a product generated at the time of molding can be reduced to improve the dimension accuracy by the arrangement. |
