Overmolding

Overmolding is a multi-step injection molding process that combines two or more type of materials into a single component.

A base component (typically made of more rigid plastic material) is molded first, then a second layer (typically made of softer, more pliable material) is molded direcly over the base component to create a single solid final component.

Typically used to manufacture parts that require soft-touch or enhance grip, i.e. rubber handle.