The process by which material, such as plastic, is injected into a mould in order to produce plastic parts is known as injection moulding. It is a manufacturing process which can include the use of a number of materials. These may include glasses, metals, confections and elastomers, however the most commonly used materials in the injection moulding manufacturing process are thermosetting polymers and thermoplastics.
At Big Boy Plastics, as you may have picked up from our name, our injection moulding process is mainly geared around the use of thermoplastic and other plastic products. The process generally involves heating these plastics to high temperatures until they melt and liquidise. The melted plastic is then injected into a mould via a heated barrel. Once the plastic settles in the mould it cools and sets, taking on the shape of the mould.
The process begins with the design of the mould. This is usually undertaken an engineer or industrial designer. The design is then handed over to the mould maker who is dealt the responsibility of manufacturing the mould. This mould can be fashioned out of metal, aluminium or steel and usually requires precision machining in order to form specific, detailed features.
The actual plastic injection moulding process needs to be strictly monitored and requires state-of-the-art injection moulding machines to guarantee the success and superior quality of the finished product. Everything from the design of the mould to the execution of the injection moulding process needs to be carefully facilitated to ensure that the part, whether it be the base of a chair or a detailed engineering component, has all the necessary detailing to ensure proper functionality.
What are the restrictions of injection moulding? In essence the process can be taken as far as the design will allow, meaning that there are a host of possibilities and options available to you!
If you’d like a more detailed description of the plastic injection moulding service or if you have any specific questions you would like answered, please contact us.