Overmolding is an advanced injection molding process that combines two or more materials into a single, unified part. It begins with molding a rigid substrate, typically plastic or metal, followed by a second injection of a softer or functional material directly over it—creating a durable mechanical or chemical bond.
This method eliminates the need for adhesives or secondary assembly and allows for improved grip, insulation, vibration resistance, and visual appeal. It’s commonly used to add soft-touch surfaces, seals, or multi-color features, especially in tools, medical devices, and consumer electronics.
Topmetry delivers high-precision overmolding tailored to your product’s demands. With our expert team and modern equipment, we ensure strong material bonding, tight tolerances, and consistent quality—helping you streamline production while elevating both performance and design.
