Insert Molding

What is Insert Molding

Insert molding is a specialized injection molding process that involves placing a pre-formed component—typically metal—into a mold cavity before injecting molten plastic around it. The result is a single, integrated part that combines the strength or functionality of the insert with the versatility of molded plastic. This method eliminates the need for secondary assembly steps such as welding, gluing, or fastening, making it ideal for applications that require enhanced durability, precision, or electrical conductivity.

Commonly used in industries such as automotive, medical, and electronics, insert molding enables efficient production of complex components like threaded housings, connectors, and reinforced enclosures. The process improves part performance, reduces production costs, and increases design flexibility.

Progressive Plastics specializes in precision insert molding, offering deep expertise, advanced equipment, and tight process control to deliver high-quality, integrated components at scale. Whether you're developing a prototype or managing a high-volume production run, Progressive Plastics provides the technical capabilities and manufacturing reliability to meet your most demanding requirements.