Insert molding is a process in which plastic is injected into a mold that contains an pre-placed insert. The result of insert molding is a single molded plastic piece with an insert surrounded by the plastic. Inserts can be made of metals or different types of plastic. Insert molding is used in many industries. Applications of insert molding include insert-molded couplings, threaded fasteners, filters, and electrical components.
Insert molding expands the capabilities of plastic and can help reduce the cost of products by limiting the amount of costly metals needed to manufacture products.
Examples of current products using insert molding and overmolding: