What is Injection Molding?

Injection molding starts with small pellets compounded to meet certain physical properties. These pellets are then dried and fed into a hopper, which allows the plastic to be gravity fed into the feed throat of the machine.

The machine then melts the plastic in a heated barrel, and injects it under high pressure out of the barrel and into your mold cavity.

The injected plastic quickly fills the cavity (or cavities), and is then allowed to cool while the machine fills its barrel for the next cycle.

As the plastic cools, it changes back to a solid. After a set amount of time, the mold opens, exposing the part, and hydraulic ejector pins push the part out of the cavity.