INJECTION MOLDING METHOD AND INJECTION MOLDING MACHINE OF DOUBLE LAYER BODY MOLDED PRODUCT OR COMPOSITE MOLDED PRODUCT

摘要

PURPOSE: To mold a composite molded product of a skin layer having a uniform thickness or a composite molded product having a favorable external appearance by the same equipments and mold. ;CONSTITUTION: The title machine is related to an injection molding machine for molding a double layer body molded product or a composite molded product by injecting at least two kinds of molding materials into a stationary mold 17 and movable mold 18 in order. Therefore, an inlet of the stationary mold 17 is provided with a gas blowing-in port 26 besides a sprue, gas piping 27 is joined to the gas blowing-in port 26, a gas cylinder 28 is joined to the same gas piping 27 through a solenoid valve 30 and reducing valve 29, a cave is formed by blowing pressure gas from the gas cylinder or the pressure gas is blown through by blowing in the pressure gas after partial filling of a molding material and then an another molding material is filled, through which the double layer molded product or the composite molded product is molded.;COPYRIGHT: (C)1995,JPO