'Injection Moulding' is the most popular process of production of plastic items. The reasons for the popularity of the process of Injection molding are many, however one of the most common reasons is –“large production”, ie. the process can be used to produce huge quantities of similar shaped plastic items of a variety of purposes. The goods produced by this process range from simple and disposable consumer goods to essential engineering components of high precision. A chosen material, commonly in a granulated form, is fed into a hopper which feeds the material into the barrel. Within the barrel there is a reciprocating screw which pushes the granules through a heated portion of the barrel. The temperature of the heater is kept at a certain range by sensors. The temperature is maintained at an optimum temperature for efficiency and so the material does not burn. The granules melt due to the heat and get into a molten state. The liquid is then pushed through the nozzle into the mould hole where the plastic is fed through a sprue leading to the mould. The moulds are then compressed together with forces around 5 - 6000 tonnes, however, there are not many manufacturing operations that use a compression force of 6000 tonnes. The molten plastic is then cooled down while in the mould which hardens it. The two halves of the mould are then separated to get the finished product. There is almost zero wastage created because of the high precision in the amount of plastic entering the mould. Also the clamping force that keeps the injection moulds together does not allow excess plastic through. Though the set up cost for Injection Moulding is relatively high compared to other manufacturing methods, the numbers of applications that can be used in injection moulding surpasses other methods. If you set up the injection moulder once it can keep running with minimal human interference. The moulds consist of two parts usually made from a hard aluminum alloy. Each mould can approximately generate more than 100,000 parts. There is a huge number of companies which specialize in the production and supply of the moulds used in the injection moulding process. You can very well understand the importance of the process of injection moulding or Plastic injection Moulding by looking at the fact that the service provided by the companies practicing the process is in great demand by a substantial number of customers The demand of Injection Moulding is noticeable in areas such as telecommunication, computers and accessories etc which require necessary specialist plastic goods and items produced by this process. The process is very often used in the production of the majority of thermoplastics such as polystyrene and nylon. Also with the help of the technique of Injection moulding, mould manufacturers deliver excellent quality auto parts mouldings. It's a process that is used to manufacture great numbers of an identical product. The benefit of injection moulding is that it keeps down labour prices and production charges. Injection moulding design can be considered to be a science as well as an art. If you are looking for an expert’s opinion you can log into the website of one of the key mould manufacturer, Keonwoo Precision Co, Ltd at http://www.mould.co.kr/eng/