Injection moulding with gas injection
When gas injection moulding, a gas (nitrogen) pushes the liquid plastic against the wall of the mould during the injection moulding process. The nitrogen is then discharged, leaving behind a hollow space. With this spraying technique, the mould has an injection point for the plastic and an injection point for the nitrogen. Gas injection moulding is ideal for making a light and handy product that still needs a certain rigidity to be solid and reliable. A car seat handle for small children, for example.