| 摘要 |
PURPOSE: To prevent the formation of internal voids and depleted parts to a resin sealed molded object. CONSTITUTION: The molten resin material to be injected into cavities 3, 4 is branched by the molten resin material branch part 16 arranged to the gate 9a of a transfer resin passage 9 to be allowed to flow in and transferred to the cavities 3, 4 while large air bubbles in the molten resin material are dispersed as small air bubbles. Further, by applying a predetermined resin pressure to the molten resin material injected into the cavities 3, 4 by a plunger 6, small air bubbles in the cavities 3, 4 are compressed to a negligible fine shape to prevent internal voids and depleted parts from being formed to a resin sealed molded object. |
