When it comes to plastic injection moulding, design engineers have three main options of machine designs to choose from. These three types of machine designs include fully hydraulic, fully electric and hybrid machines. Each has its benefits and disadvantages and in order to select the process that suits your requirements you need to know what each process is and what it can offer you.
In this two-part post we’ll help you get to know the hydraulic plastic injection moulding just a little bit better. In part one of our post we’ll focus on what exactly it is and what it’s used for while part two will look at some of the advantages and disadvantages of this popular injection moulding option.
So what is hydraulic plastic injection moulding?
Hydraulic plastic injection moulding machines make use of hydraulic cylinders to clamp together two halves of a mould at high pressure. Plastic substrate pellets are then melted, and the liquid is injected into the mould cavity. Once the plastic has cooled and hardened, the mould halves are separated, the part is extracted, and the process is repeated.
These machines have long been the popular option for plastic manufacturers but their dominance has since been impacted by the rise of electric machinery. However, these may still be the best option depending on your specific needs, electricity costs, and personal preferences. Hydraulic moulding is a popular choice for the automotive industry, which requires the production of large, heavy parts such as bumpers.
Lookout for part 2 of our post where we look at the advantages and disadvantages of hydraulic plastic injection moulding.
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