There are naturally occurring plastic materials in the world. Products like chewing gum and shellac have been in use for centuries. Innovative scientists quickly saw the possibilities for the chemical manipulation of natural materials such as rubber and nitrocellulose, and, in 1855, Alexander Parkes invented the first synthetic plastic. Ever since then, the use of plastic in industry has been steadily growing. The ability to use plastic widely in industry has been made possible by the process of injection moulding. Plastic moulding is a useful way to get the most out of plastic, and to manipulate it into whatever you desire.
Injection moulding is what makes it possible to use plastic in as many ways as we do today. By injecting molten plastic into a mold and using pressure and heat to harden it, you can create durable plastic pieces through the process of plastic moulding that fit to specification and can withstand a lot of wear and tear. People sometimes think that because plastic is not as durable as metal that it is an ineffective material to use for parts. But the truth is that plastic is far less expensive than metal and, while it may not last as long as metal, is still perfect for use in certain applications.
The process of plastic moulding starts with plastic granules. These granules are fed into the injection chamber of an injection moulding machine through a hopper. The inside of the machine also contains a reciprocating screw, which makes sure that the plastic is fed gradually and evenly into the heating element. The plastic is then heated to melt it, and it then passes through the nozzle into the mold cavity. At that point, the plastic is slowly injected into the mold itself, where a moveable plate applies pressure to the plastic to make sure that it hardens.
Using an injection moulding machine to create plastic parts is a fast and easy way to get the parts you need as soon as you need them. And once you have had a mold tooled for the part that you need, you can use it over and over again so that you will always have ready access to that part. And by keeping a few spare parts on hand, you can make sure that you never have to suffer any downtime while you are waiting for a new part to be manufactured. Plastic moulding is continuing to mold the manufacturing industry.