Processes (Injection Moulding and Tool Manufacture)

Plastic Injection Moulding is the process of injecting material into a mould to produce the desired component.

In detail; the plastic injection moulding process involves injecting material into a mould to produce the desired component. Prepared material is funnelled down into the screw and barrel unit. The barrel is heated along its length to melt the plastic at staged temperatures allowing the material to liquify and move along the screw. The screw rotates moving the material forward with the dosage, pressure and speed determined to fill the cavity.  

Material is then injected through the nozzle situated in front of the screw to the feed channels of the mould tool. The feed channels allow this material to flow into the open cavity which forms the shape of the finished product. The mould tool is then held at a constant temperature to ease the flow of material, avoiding moulding stress and to draw out the heat from the product after injection to form a solid form.  After the cooling time the tool will open and part will be ejected from the press.

1.

Ejection Unit

2.

Platens

3.

Barrel

4.

Hopper

5.

Injection Unit

6.

Chute

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