One Process. Two Materials. A Better Part.
Over-molding is a manufacturing process where one material is molded over another typically a softer plastic or rubber over a rigid plastic or metal part to create a single, integrated component. It’s commonly used to improve grip, durability, aesthetics, or functionality without the need for secondary assembly.
Why Over-Molding?
Adds soft-touch grip to rigid handles, housings, or tools.
Integrates sealing or cushioning without a separate assembly step.
Improves aesthetics with multi-material, multi-color components.
Increases durability by combining materials with complementary properties.
Reduces manufacturing steps and total assembly cost.
Common Over-Molding Applications
Tool grips and handles TPE or rubber over rigid nylon or ABS substrates.
Electronic enclosures with soft-touch surfaces or integrated gaskets.
Medical and lab components requiring ergonomic grip or material separation.
Consumer products requiring multi-material aesthetics or functional layering.
Materials
- Substrate materials: ABS, nylon, polycarbonate, acetal, and other rigid engineering plastics.
- Over-mold materials: TPE (thermoplastic elastomer), urethane, and compatible soft or flexible resins.
