Complete Machine Cycle

The following describes on full machine cycle:

1) The injection moulding cycle begins when the mould closes. The screw moves forward, injecting the material through the nozzle to the sprue. The material fills the runners, gates, and finally the mould cavities.

2) During the packing phase, additional material is packed into the mould cavities until the gate solidifies or freezes off and plastics can no longer be forced into the mould cavities. (At this point, additional packing only results in packing of the sprues and runners).

3) The material is allowed to cool or solidify in the mould. During the cooling time, the screw rotates counterclockwise, melting the next shot of plastics. It stops moving when it reaches its preset setting. Pellets from the hopper enter through the feed throat.

4) As the mould opens, the parts are ejected and the machine is ready to cycle once again.