1. General principles of gas-assisted injection processes

Broadly speaking, there are three main processes:

• partial filling ;

• Filling using a feeder;

• filling, with the material being forced into the sleeve.

But there are also derivative applications

• filling with mobile core;

• gas injection for compacting aspect parts ;

• external gas injection ;

• injection of hyper-cooled gas;

• simplified tooling.

But the gas-assisted injection process can also be combined with a number of other processes.

• compression injection with gas injection ;...