Multi-Shot Molding

Multi-Shot Molding

2 or 3 materials in 1

Imperial Plastics specializes in multi-shot injection molding, and the design of high quality multi-shot tools for a wide variety of applications.

Imperial Plastics specializes in multi-shot injection molding.   Multi-shot injection is a method of molding two or more colors, or types of material into one component. In multi-shot molding, plastic polymers from two or more injection units are applied through independent nozzles on to one molded part.  By using multi-shot molding waste can be minimized, and productivity can be maximized creating a cost effective way to mold parts with flexible buttons, soft grips, flexible hinges, or parts with seals.

Depending on the application, Imperial Plastics offers a wide variety of multi shot injection molding, including Rotary Platen, Robotic Pick and Place, and Hand Transfer Over-Molding.


Benefits of Multi-Shot Injection Molding:

  • Two or more material or colors in one part
  • Reduced cycle times leading to reduced part costs
  • Reduction of secondary operations
  • Features including soft grip, molded in seals and gaskets, flexible buttons, and flexible hinges.
  • Improved quality and production scrap
  • Molded in items that identify parts or the part features

Hand Transfer

Hand Transfer Multi-shot molding is an option on lower volume projects where the cost of automation and rotary platen tooling exceeds the scope of the project. Two or more tools are used in this process. Components are produced in a traditional molding process and then hand placed into an over mold tool for injection of next resin.

Robotic Pick and Place

Robotic Pick and Place multi-shot molding is an option for high volume cost effective production when the core detail needs to change. Imperial Plastics inventory of robotics and expertise in end of arm tooling can accommodate almost any robotic pick and place project.

Rotary Platen

Rotary Platen Multi-Shot is used when the cores and cavities of all shots are contained in one mold. Between cycles, the mold moves on a rotary platen to accurately position the cavities to receive either the first, second, or next consecutive shot. This process is typically used on high volume production where the molded part does not leave the core or cavity side of the mold.