| 摘要 |
PURPOSE: To accurately produce an elongated resin molded product by injection molding without excessively increasing the injection filling pressure of a liquid synthetic resin. CONSTITUTION: The distribution runner 7 communicating with the elongated cavity space 6 having the cross section corresponding to the outer surface shape of the gasket molded on the outer peripheral part of a window panel 1 is formed in an injection mold 3 consisting of a core mold 4 and a cavity mold 5 in almost the same length as the cavity space 6 in almost parallel to the space 6. A liquid synthetic resin is injected to fill the distribution runner 7 and compressed gas is also injected into the runner to be expanded and the liquid synthetic resin in the distribution runner 7 is uniformly fluidized by expansion pressure to be filled into the cavity space 6 over the total length thereof. |
