Overmolding is a technique used to combine multiple materials into one single part or product. The first material, also referred to as the substrate, is in most cases partially or fully covered by subsequent materials during the process. Plastic overmolding is seen in many industries such as automotive, household appliances, medical devices and electronic devices. The reason to implement overmolding in the manufacturing process is to add a soft touch to a part or product.
Overmolding is suitable for smaller scale production volume in comparison to 2k injection molding which is more suitable for a larger production scale. During the overmolding process, the material that is used to mold must cool down before removing the part. With 2k injection molding the polymer is in most cases still hot and flexible, which enables us to do additional operations.
2k injection molding is popular for producing compact and rather small products or parts. Overmolding is used for producing bigger items in general. In general it takes more time to make a product with overmolding, but it is a great solution for rather big products or parts.
Rompa Groups offers both solutions and we will always take multiple technologies in consideration to achieve the best end result for the product or part.