Injection molding method, injection mold, resin-molded article, and insert resin component

摘要

The object of the invention is, in integrating two or more types of resin materials having different compositions or tones in a mold, thus molding a multi-color, multi-material molded article, to increase the strength of the bonding surfaces of the resins. To achieve this object, this invention provides an injection molding method of injecting two or more types of resin materials having different compositions or tones into a mold, thus producing a molded article in which the two or more types of resin materials are bonded. Convexo-concave shapes are formed on the bonding portions of the two or more types of resin materials.