Plastic injection moulding
Plastic isthe most versatile and resourceful material today, which sees much more ways and varieties of usage, like never ever before. And, one of the most commonly used methods in terms of plastic manufacturing, is plastic injection moulding.
This process uses plastic injection moulds, and is all rage and accepted because it is a prompt process and can be taken up to produce a range of varieties and quantities of plastic items, varying from disposable end user goods to high precision engineering components.
An overview of the process:
- Raw materials: A wide range of raw materials are availed in the manufacturing process. However, because the process demands viscosity from the raw materials, the thermosetting plastic, elastomers and thermoplastic polymers (resins) are given ultimate preferences.
- Melting:Under very high temperature and pressure, the polymer is turned into liquid in a huge cylindrical melting unit. Then, the melted plastic is filled in an auger with an opening at the bottom which holds it back into passing in moulds. Once the heating process is over, the polymer is poured into the plastic injection molds to shape it according the requisite.
- Cooling: Subsequent to themoulding process, whole of the mould is thenheaded to the next process i.e. cooling, for its solidification.The process is aided by passing air or water over the heated moulds and involves the major time period of the entire process.