ABOUT PLASTIC INJECTION MOULDINGPlastic injection moulding is the process of creating component parts via the use of a mould. Hot liquid plastic is injected into a pre-set mould, allowed to cool and then released. With so many plastic injection moulded products surrounding us in our day-to-day lives it is no surprise that making these products is big business.The tool making machines that create these plastic injection moulds are very intricate machines, but they give us the ability to create products by the hundreds of thousands - all immaculately, and all to the same precise specifications.The process of plastic injection mouldingThe liquid plastic is injected into the mould under pressure. It is important that a tight pressure is kept to prevent air bubbles. Either side of the mould is clamped together tightly. Once it has been ensured that all cavities have been filled with plastic the mould is allowed to cool.Once cooled, the moving side of the mould - known as a platen - is taken away from the static platen and the product is revealed.After a run of the product has finished, the factory stores the tooling and moulds securely until another batch of the product is needed.