Injection Moulding

Injection Moulding Production & Process

PolyGlobal & Injection Moulding

For over 34 years injection moulding has been our primary manufacturing option. Our injection moulded components are used heavily across all industrial sectors due to the diversity of the base materials we offer including Polyurethane, Nylon, Polypropylene, TPE and TPR, and the variety in size and shape that can be moulded.

We offer injection moulding weights up to a maximum of 2.5kg and dimensions of 1200mm x 500mm and 650mm in diameter, with no upper limit to part quantity. Our precision engineering enables us to work to tight tolerances.

The Process

In the injection moulding process, the chosen material is introduced into the injection moulding machine via a hopper.  The virgin material starts the process in pellet form. The injection moulding machine consists of a heated barrel from which a reciprocating screw feeds the molten plastic into a temperature-controlled mould.

The screw melts the pellets and acts as a ram during the injection phase. The molten plastic is injected into a mould tool that has been manufactured to the specific design of the moulded part.

Once the part is moulded, the mould opens to release the part. This whole process is then repeated for the entirety of the production run.

After the moulding process, the parts are cooled, before being trimmed/finished if required.

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