EFFECTS OF PROCESSING PARAMETERS WALL THICKNESS ON CORE GEOMETRY CORE PENETRATION FOR CO-INJECTED PARTS

摘要

Co-injection is a specialized injection molding process in which two or more materials are sequentially or simultaneously injected into a mold. The resulting plastic part will consist of a skin of the first material covering a core made of the second material. This can allow for an ergonomic surface finish without jeopardizing mechanical strength. It also can help reduce material costs by allowing lower quality material to be incorporated into the core. The focus of this research was to determine the effect of processing parameters and wall thickness on the core geometry and penetration depth. With a better understanding of the co-injection process, it can be implemented for more parts and a potential cost savings can be realized.