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CD ROM and DVD Case Manufacture
V. Ryan © 2008
Materials such as polystyrene, nylon, polypropylene and polythene can be used in a process called injection moulding. These are thermoplastics - this means when they are heated and then pressured in a mould they can be formed into different shapes. A simple diagram of an injection moulding machine is shown below showing the manufacture of a CD case.
|A typical ‘plastic’ CD case is manufactured in this way, with polypropylene being the material.|
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