Injection Moulding Process

Injection moulding is a widely used process in manufacturing. It is a quick way of producing large numbers of identical components such as plastic trays and safety helmets.  

Most thermoplastics can be injection moulded, including, Nylon (PA), Polycarbonate (PC), Polypropylene, (PP), Polystyrene (GPPS) and Acrylonitrile-Butadiene-Styrene (ABS).

The injection moulding machine consists of a heated barrel with a screw feed mechanism that forces molten polymer into a split mould. 

The screw melts the polymer as it turns and rams it into the mould under very great pressure. 

After the plastic component in the mould has cooled and solidified sufficiently, the mould is opened and the component is ejected.

Learn about Plastics

Multimedia Design and Technology Education uses animations and supporting technology notes to teach about plastics and plastics processes.

All the plastics processing technology notes and animations can be found in the plastics section of our Key Stage 3 Design and technology software and in the Plastics Notes and Animations software package.

 

 

Click on a link below to view animations of plastics processes.

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Animation of the injection moulding process

 
 
     
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