INSERT MOLDING

What is insert molding?

Insert molding is an injection molding process whereby plastic is injected into a cavity and around an insert piece placed into the same cavity just prior to molding, thus the term insert molding. The result of insert molding is a single piece with the insert encapsulated by the plastic. The insert can be made of metal or another plastic. Insert molding was initially developed to place threaded inserts in molded parts and to encapsulate the wire-plug connection on electrical cords. Insert molding is also used quite extensively in the manufacture of medical devices. Typical applications of insert molding include
insert-molded needle hubs and luer fittings and bifurcations, as well as encapsulated electrical components and threaded fasteners. There are few design limitations or restrictions on material combinations.