Overmoulding is an injection molding process that can make parts from two or more materials.

Sometimes referred to as "in-mold injection".

Overmoulding can be broadly divided into two distinct processes, insert molding and multi-molding.

Insert molding is often used to add metal features to plastic parts. Multi-molding is used to make

plastic parts from multiple materials in a single molding process to improve external properties such

as impact resistance and feel.