| 摘要 |
PROBLEM TO BE SOLVED: To mold a thin plate molded product having high quality free from a weld line and a large area by an injection molding method. SOLUTION: In this injection molding machine including a plurality of injection units for injecting the same resin material to fill one cavity of a mold, a time lag is provided to the injection and filling start timing of a molten resin into the cavity by a plurality of the injection units and the resin due to the injection unit previously starting injection filling advances through the cavity. After the resin from the injection unit previously starting injection filling is passed through the injection part of the injection unit starting the next injection filling, the injection filling from the injection unit starting the injection filling next is started. COPYRIGHT: (C)2008,JPO&INPIT
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