Double Injection Molding – 2K injection molding or two shot injection molding

Double Shot injection molding which some people call 2K injection molding or two shot injection molding, is the process of molding two or more different plastic materials into one part at one time. One important element of double shot injection molding is the two materials must be compatible with each other and designed to overmold. Otherwise, the product doesn’t hold up during the procedure, sometimes overmolding is also a single type of 2k injection molding, but a lot of the materials that are designed for over molding may not be appropriate for this two-shot process. This is because one material requires a larger amount of cycle time to produce than the other material. Again, compatibility of materials is key.

Produce a single part with different regional plastic materials or mold a single part with multiple independent colours. Applications range from simple household items like powder tools or toothbrush etc.

The three most widely used methods of two-color injection molding are

Multi-component injection molding

Multi-shot injection molding


We offer two-shot injection molding service and over molding service to the world, we have parallel 2k injection molding machines and the 90-degree double injection molding machine, if you need any type of double injection molding parts or overmolding parts contact with us, we will offer you the best quality.

If you want to know more information about two shot molding? you can go to two-shot molding page to take a look.