Fusible core for synthetic resin product and its fusing-out method


PURPOSE: To manufacture efficiently a good molded product without adhesion of alloy or the like after fusing out in the resin molding utilizing a core of low fusion point alloy. CONSTITUTION: A coated layer 3 of water-soluble synthetic resin material is formed on the surface of a core 1 of low fusion point alloy, and a molded product P is manufactured by using water-soluble carbohydrate as a heat medium 5 and fusing with core 1 away from an injected layer 2 after injection. The fusion time, therefore, is shortened to enhance productivity, and a good product P without adhesion or the like of alloy to the molded product is manufactured. COPYRIGHT: (C)1992,JPO&Japio




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    JP-H09174569-AJuly 08, 1997Tsutsui Plast:Kk, 株式会社筒井プラスチック内部が複雑な形状のプラスチック射出成形中空製品の製造方法とこれに用いる水溶性中子