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What is Overmolding

2019-09-07 10:49:34

Our rapid overmolding and insert molding processes produce custom prototypes and on-demand production parts in as fast as 15 days. We use aluminum molds that offer cost-efficient tooling, producing parts from a range of thermoplastic and liquid silicone rubber materials.

With overmolding, the production of the substrate parts is a standard injection molding process involving an aluminum mold with no heating or cooling lines running through it. Cycle times are a bit longer, which allows our molders to monitor fill pressure, cosmetic concerns, and the basic quality of the parts. When the total run of substrate parts are molded, overmold tooling is then assembled to the press. The substrate parts are placed by hand into mold where each part is overmolded with either a thermoplastic or liquid silicone rubber material.

Insert molding can best be described as injection molding a plastic material around an insert of a different material or substrate. This process is commonly used for a wide variety of products in practically all market segments. The inserts are can be made from many different types of materials and geometric shapes. Some examples of insert molding are; fasteners, electrical connectors, terminals, filters, bushings, bearings, and component strengthening.

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