Overmolding belongs to insert molding technically. The process is very simple: inject hard plastic or plastic with higher melting point firstly, then take it out of the mold and put it into the other mold manually to inject with another material.

Compared with double or two shot injection molding:


  • More feasibility, wider design options. Core A1 and A2 can be different, while 2K molding, they must be the same.


  • Not looks as good as two shot molding
  • Flash is easy to occur
  • Lower production efficiency
  • Higher rejection rate
  • Bigger tolerance

For any insert overmolding requirements, feel free to contact with us to get a quote.

For any overmolding questions, don’t hesitate to contact with us: engineering@bestcreating.com