Plastic Injection Moulds and Moulding

Plastic Injection Moulds and Moulding

Plastic injecting technology encompasses all aspects of plastic injecting moulds, moulding, design and workflows. The use of thermoplastics to fabricate parts is commonly used in a variety of industries, such as the mining, oil & gas, medical, automotive and construction industries.

There are many advantages to using plastic to create precision parts, with speed, high levels of efficiency and value for money being just a few.

What is Plastic Injection Moulding?

In simple terms, the procedure involves the melting of plastic pellets (or, in some cases, other materials) that are injected into a custom-designed mould and then cooled. The finished product is a robust, precise piece that can be easily replicated for volume

Granular plastic is fed from a hopper into a heated barrel. It enters through gravitational force and, as this increases, the plastic gradually moves through the heated chamber and melts. As more plastic enters, so the pressure increases and this causes the liquid plastic to be ‘injected’ into the mould. Once it comes into contact with the inside surface, the cooling process begins and the plastic forms into the desired shape.

The mould then opens, the formed piece is ejected and more melted plastic enters the mould.

Challenges to the Process

The biggest challenge is the stresses that are imposed upon the plastic as it melts and cools. The heating process breaks down the molecular bonds. These then bend and twist as they go through the injection process. This can cause the resulting plastic precision part to have unwanted stress points, so reducing the integrity of the parts.

Other possible issues include discolouration, sink marks, weld lines or burn marks. By far the best way to limit the occurrence of such problems is to use an experienced plastic injection moulding supplier.

CAD creation and the practical application to create these parts will dramatically reduce the likelihood of any such issues occurring.

The Many Benefits of Plastic Injection Moulding

The technology offers multiple benefits. A quality supplier will discuss the best solutions for the creation of the components you require.

Benefits include:

  • A choice of a wide range of thermoplastics suitable for different applications
  • Custom-fit to suit simple or intricate parts
  • Produces identical parts
  • A fast production process
  • Can be used to produce small or large volumes
  • Efficient and highly cost-effective
  • Robust and long-lasting parts
  • The process is stable and reliable
  • Produces high-quality parts

SixDe Offer a Complete Solution for Custom-Fit Plastic Injection Moulding Solutions

SixDe are committed to helping WA’s manufacturing community continue to expand and reach the potential that’s being backed by the Australian Government. Based in Perth, the company offers a local, national and international solution for precision parts, including expert plastic injection moulding technicians, that are perfectly aligned to your company’s manufacturing goals.

To find out more visit or call 08 9434 1112 for a no-obligation chat.