Injection Molding


A type of plastic molding performed on a single machine that can be capable of making both small and large parts.

The procedure is:

  • Molding powder is fed into the heating chamber on the machine that is capable of holding a lot more powder than is necessary for the operation. The powder is then heated to a very viscous fluid.
  • An amount of molding powder that is just sufficient to fill the mold cavity and make the part is then forced into the rear of the heating chamber by a plunger, injecting an equal amount of liquid plastic from the front of the chamber into the mold.
  • The material remains in the mold until it is cooled, and then ejected.


  • On February 16, 2018