Injection molding is a manufacturing process that consists of filling a metal mold cavity with liquid plastic resin, which then cools and forms a plastic part.
It’s most often used for the manufacturing plastic parts at scale due to its low material waste and low cost per part. It’s an ideal manufacturing process for industries like medical devices, consumer products, and automotive.
Our plastic injection molding process produces custom prototypes and end-use production parts with lead times as fast as 1 day. We use aluminum molds that offer cost-efficient tooling and accelerated manufacturing cycles, and stock about 200 different thermoplastic resins.
Common applications for plastic injection molding:
・low-volume production
・bridge tooling
・pilot runs
・functional testing and prototyping
The key steps in injection molding:
・Clamping: The mold’s two sides are sealed shut under hydraulic pressure.
・Screw Recovery: Plastic material is fed into the barrel and conveyed via rotating screw down the barrel toward the front of the screw.  As the material is conveyed it is heated to the specified melt temperature creating the “shot” or volume of material to be injected.
・Injection: Screw is pushed forward injecting the material under very high pressure into the mold.
・Cooling: Water circulated through channels in the mold to remove heat and solidifies the molded part.
・Ejection: The clamp releases, mold opens and part is ejected from the mold.