Injection Molding

Insert molding is a subset of injection molding techniques where metal components are loaded into a mold and then over-molded with plastic to create a part with improved functional or mechanical properties. The insert is precisely positioned inside the mold either manually or by a robotic arm.

One of the most common applications for insert molding is the creation of metal attachment features for fasteners. Fasteners enable assemblies to be securely assembled and disassembled without product damage. Heat-set threaded inserts are molded into plastic to reduce the risks of thread damage during installation. Insert molding can also eliminate the need for fasteners by including the necessary metal parts in the mold, thus firmly securing the parts into a single bonded component.