| 摘要 |
PURPOSE:To provide an injection molding method, with which high quality, comparatively large-sized, thin resin product can be molded without developing weld-marks and flow marks. CONSTITUTION:Molten resin A is distributed and supplied from the same resin feed passage 5 to a plurality of resin pouring parts 3. At the same time, the molted resin A is injection-poured from a plurality of the resin pouring parts 3 in the predetermined pouring order in the cavity 2 in a mold 1. The injection- pouring from the second order resin pouring parts 3b and 3b are performed after the arrival of the molten resin A, which is injection-poured from the first order resin pouring part 3a, to the positions of the resin pouring parts 3b and 3b. Further, when the injection-pouring from the second order resin pouring parts 3b and 3b is started, opening and closing valves 12 and 12, which open and close the resin pouring parts 3b and 3b are gradually released. |
