Two-shot overmolding

Overmolding is an injection molding process where two materials are molded together. Types of overmolding include two-shot sequential overmolding, insert overmolding. Two-shot sequential overmolding is where the molding machine injects the first material into a closed cavity, and then moves the mold or cores to create a second cavity, using the first component as an insert for the second shot using a different material. Insert overmolding uses a pre-molded insert placed into the mold before injecting the second material.