Injection molding simulation software Co-Injection

Moldex3D presents co-injection molding. As a result of the co-injection molding process, a plastic part with a skin and core laminated structure is produced. First, the skin material is injected in the mold and then the core material. Skin material is again injected by the machine for core encapsulation. This results in a product with external skin material appearance as per needs. With this character, the main use of co-injection molding is for regrinding and reprocessing of materials as 2nd shot (core) material. This helps in environmental-friendliness as well as lower costs. Also, with high-impact plastics used as core materials, high product strength and performance is delivered by the process. In order to make a co-injection machine, a hot runner system, control valve gates, and two barrels are needed. This results in more costs as compared to a conventional injection molding machine. Apart from this, the machines face a key challenge of determining the appropriate skin material to core material ratio and tracking interface shape.