Co-injection molding

Co-injection molding(or sandwich molding) a process that creates a skin and core material arrangement in a molded part. The skin material is injected first into the mold cavity, and is immediately followed by a core material. As the skin material flows into the cavity, the material next to the cavity walls freezes and material flows down a center channel. When the core material enters it displaces the skin material in the center of the channel by pushing the skin ahead. As it flows ahead it continues to freeze on the walls producing the skin layer

Machine Based Co-Injection molding

The Co-Injection process requires two injection/processing units. The units generally inject material through a manifold located at the end […]