Two-colour moulding--a suitable case for simulation.(Software)

Publication: British Plastics & Rubber

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COPYRIGHT 2003 M.C.M. Publishing Ltd.

TWO-colour or two-component moulding, once a curiosity confined largely to typewriter keys, has become an important technique for the part designer. Also known as two-shot moulding or over-moulding, the process can be used with differently coloured materials to create mouldings with permanent, and indeed irremovable, markings in the spirit of the original concept.

However, there are many other possibilities. Dissimilar materials can be combined to create an object with the attributes of both. The material combination can be cheap and costly, slippy and grippy, flexible and rigid; the possibilities are limited only by the ingenuity of the designer--and it must be said, of the moulder and toolmaker as well. There is more to go wrong in a two-component moulding and the second shot is uncharacteristic of normal moulding in that it is bounded not just by mould...

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