Nozzle

The nozzle connects the machine to the mould.

Different types of nozzles exist for moulding materials with special characteristics. The tip screws into the nozzle and can be changed to accommodate moulding different materials. Typically, a heater band is located around the nozzle to control the temperature of the plastics melt.

In some moulding operations, a mechanical shut-off nozzle prevents material from drooling. This provides a positive shut-off because the valve will mechanically stop the flow of material. These types of nozzles are activated with a hydraulic cylinder.