| 摘要 |
PURPOSE:To enhance the quality of a molded product by preventing the sink mark of a resin generated inside a mold at the pinch-off part thereof. CONSTITUTION:Adjusting recessed parts 13, 23 filled with the resin of a parison P pinched by mold clamping operation are provided to the pinch-off parts 11, 22 of molds 10, 20 and the resin is extruded by the pressure in the adjusting recessed parts 13, 23 to be supplied to the inside of the molds at the pinch-off parts 11, 22. |
