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Plastic Injection Moulding

What is plastic
injection moulding?

Plastic injection moulding is a manufacturing process that allows for the quick production of large volumes of identical plastic mouldings. This involves the injection of molten plastic into either one or multiple cavities within a metal mould, the plastic cools rapidly and is ejected to form a solid finished part.

More complicated plastic injection moulding techniques include overmoulding (combining two moulded components), insert moulding (moulding two components on top of each other at the same time) and filter encapsulation (moulding a plastic frame around a filter) – all of which are carried out at BEC Group’s Hampshire site.

Why use plastic injection
moulding for your project?

Utilising plastic injection moulding for your project has many advantages’ this includes the speed of manufacture, the low costs associated with labour and production, the ability to create bespoke and complex part designs and the variety of thermoplastics that can be used. You can have the part you want in the precise colour and material that best fits it’s application in a timely manner and at a relatively low cost, what’s not to like?

What plastic is used
for injection moulding?

Hundreds of different thermoplastics are used in the injection moulding process, ranging from rigid to rubbery, fragile to tough, translucent to opaque. The plastic used depends upon its application- the mouldings may need to be impact resistant, chemical resistant, a specific could, flexible etc. Cost also plays a part in material selection.

Learn more about some of our most popular plastics below:

  • Polypropylene
  • Acrylic
  • HDPE
  • Acetal
  • PET

How does plastic
injection moulding work?

At BEC Group a plastic injection moulding project usually begins with the creation of a mould tool by our specialist in-house toolmakers. This tool contains a mould within it that forms the shape of the finished product. Once a steel tool has been designed and built, it is loaded into an injection mould machine, plastic pellets are heated in a barrel attached to this machine, and once the correct temperature has been reached it is injected into the cavity within the tool. The plastic cools down and is then removed from the machine either manually or mechanically.

What can injection moulding
be used for?

Plastic injection moulding applications are vast and include many commercial and domestic products used in daily life. The casings for your remote control, the knobs in your car, the electric car charger at your workplace and the filters in your tumble dryer are all common examples of plastic injection moulded components.

Do you have a project that may require plastic injection moulding? Get in touch and we’ll be happy to help and provide you with a no obligation quote.

For further information or a
no-obligation quotation simply
contact us today.


Injection moulding for the Channel Tunnel


Injection Moulded Components