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Method of injection molding thermoplastic resin using supercritical fluid and injection molding apparatus
Method of injection molding thermoplastic resin using supercritical fluid and injection molding apparatus
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机译:使用超临界流体注射成型热塑性树脂的方法和注射成型装置
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摘要
The present invention provides an injection molding method capable of impregnating a supercritical fluid stably and partially in molten resin in a plasticizing cylinder of an injection molding apparatus. The above object is achieved by providing the method of injection molding which includes measuring a filling amount of the molten resin in the plasticizing cylinder, introducing a supercritical fluid into the molten resin in the plasticizing cylinder while moving back the screw by a predetermined distance without rotating the screw from a position of the screw at the time of completing the measuring, detecting a pressure of the molten resin, and determining based on the pressure an injection start position for the screw.
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