| 摘要 |
PROBLEM TO BE SOLVED: To provide an insert molding method for suppressing such a phenomenon that an insert shorter than a prescribed length is moved by the pressure of a molten resin material when the molten resin material is injected in a cavity in which the insert is inserted and arranged to fill the cavity and the flow of the molten resin material in the peripheral part of the insert also fluctuates by the movement of the insert and, as a result, a density difference is generated in the molten resin material in the peripheral part of the insert to generate a weld line, voids or the like at that part. SOLUTION: The insert is pressed and held by an energizing means so as not to change the flow state of the molten resin material when the molten resin material is injected in the cavity to fill the cavity to perform the injection and filling of the molten resin material. By this constitution, the generation of a weld line, voids or the like in the peripheral part of the insert is suppressed. COPYRIGHT: (C)2003,JPO
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