Injection moulding of the highest precision:
The raw material
The initial material for the production of our plastic containers is the granulate. This is small plastic pellets to which colour is often added. The granulate is stored in large silos. From there it is transported through feeder pipes to the injection moulding machine.
An essential component of the machine is a cylinder, inside which a “corkscrew thread” moves. In it the granules are transported to a nozzle, in front of which the injection moulding tool is clamped into the machine. The small plastic pellets are heated, ground up and mixed, giving a viscous compound.
Two plunges press the two halves of the mould together and the liquid plastic can be injected into the cavities of the moulding tool. The tool then moves apart, the finished container is taken out and the process is repeated.
An injection moulding machine requires enormous closing force to hold the two halves of the tool together.
1. Injection process prepared
Tool open, granulate stocked.
2. Injection process starts
Tool closed, granulate proceeds into the spiral.
3. Injection process
Tool closed, granulate heated and as a viscous plastic material injected through a jet into the cavities of the tool.
4. Injection process completed
Container cools off.
5. Injection process finished
Tool moves apart, container removed via robot.