For Sale - PCM - 1990 - Two material Co-Injection Retrofitting

We offer Co-injection technology that enables a conventional machine with a single barrel and single screw to inject two materials in a single shot with one material totally enclosing the other. During injection, the well-know principle of fountain flow causes one material to cool against the mold walls and material to form the encapsulated core. A three-layer "sandwich" construction is produced.

Unlike a conventional co-injection machine with two barrels, Co-injection technology is remarkably easy to use. Other than the screw recovery cycle the machine works exactly the same as a standard injection molder. In most cases Co-injection technology can be controlled by the same software that comes with the standard machine.

The ratio of materials is controlled by an external auger feeder mounted to the secondary hopper. Because this design requires no changes to the screw drive mechanism, retrofitting to any model of existing press is as simple as a routine barrel change. Further advantages of this version include:
- Faster recovery in that both materials plasticize simultaneously.
- Lower cost because there is only one screw rather than two.
- The ability to switch to single material molding on the fly.