| 摘要 |
PROBLEM TO BE SOLVED: To mold a resin composite molding having an excellent appearance without shrink mark, a flow mark or the like by improving a mold transferability of a surface of the molding, in the case of injection molding of the moldings for sequentially injecting two types of molten resins in a mold cavity. SOLUTION: In the method for injection molding resin composite moldings for sequentially injecting a plurality of molten resins in molds 11, 12, the first molten resin is injected, charged and fully filed in cavities of the molds 11, 12, then a gas is injected in the molten resins in the molds 11, 12, part of the resin is extruded out of the mold (spillover cavity) 16 to form a hollow part. Subsequently, the second molten resin is injected and charged in the hollow part, thereby molding a composite resin molding. |
