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Medical Multishot Injection Molding

Pexco gives you new possibilities with its ability to do true multi-shot molding, also known as dual-shot or two-shot injection molding.  Multi-shot refers to the ability to shoot two or more different materials into the same mold, into different locations, resulting in parts with increased functionality, improved cosmetics, and multiple mechanical properties.   

Multishot Injection Molding

Molded medical devices requiring good ergonomics and/or featuring valves, septums, integrated seals, diaphragms, and plungers are greatly enhanced using dual or multi-shot technology.  

Multi-shot molding (also known as dual-shot molding or two-shot injection molding) reduces time and labor when compared to multiple molding cycles of separate components.  When combined with the elimination of assembly and other labor operations, and the risk of first and second shot variation often found with hand-loaded insert molding, reducing scrap, the total cost of multi-shot molded parts becomes notably less. 

From a product performance perspective, mutli-shot molding yields a true physical bond, resulting in a much stronger, longer-lasting adhesion compared to more traditional “skin on skin” post-molding assemblies.  In multi-shot molding, assembly is built into the molding process. 

  • Multiple mechanical properties via the same mold
  • Reduced Cycle Time
  • Reduced Part Cost
  • Improved Adhesion
  • Best for quantities greater than 50,000 units per year
  • Multiple colors increasing the cosmetic range of products


Our process experts will help determine the best way to combine one or more materials into the same molded component, to help you determine if multi-shot molding is the best solution for your next program.

Design for Manufacturing (DFM)

A Powerful Combination

We advise customers using our expertise of efficient part design, mold design, appropriate plastic material, and production processes. This assists in the development of workable designs for injection molding, without compromising functionality of your part or product.

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