An Overview of Injection Moulding
Injection moulding is the process in which thermoplastics are heated to a very high temperature, liquefying the plastic so it can then be poured into the mould. The cost of the moulds and machinery are very high, but when creating a very large quantity of moulded plastic items, the cost per unit can be very low. The machines, although very expensive initially, are able to accept many types of mould, meaning that the machine can produce many different types of moulds, resulting in a greater amount of work that can be completed.
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Rubber Injection Moulding
This is the process in which the rubber is heated to above boiling point and
then injected into the chosen mould. The machine must use the correct pressure
for the particular type of thermoplastic which is being used and then apply the
correct pressure into the mould.
When using a machine for rubber injection moulding, the molten plastic is
forced into a closed mould. This material will then harden within the shape to
create the item desired.
Once the liquefied material is within the mould, sometimes called a ‘die’, it
is then cooled to temperatures below freezing point to ensure that the plastic
hardens. Once the mould is cooled enough and has reached the desired
temperature, the finished product is ejected from the die.
When we consider the question, what is rubber
injection moulding?
the answer can be summarised as this: thermoplastic material is heated to above
boiling point and poured into a closed mould. This mould is then cooled to
below freezing point, hardening the plastic shape within. Once the die is
cooled enough, the finished product is then ejected from the mould.
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Creating Everyday Items
A look on the British Plastics Federation page details just some of the many
products that can be produced using this method. This includes many everyday
household items such as disposable razors and washing-up bowls, as well as
medical items such as syringes.
Injection moulding is a process in which many everyday essential household
items are made. The diversity of products this method is able to create is
colossal. The initial outlay to cover the cost of the machinery is high, but
the cost of bulk orders can be very low in some cases.