30 июля, 2015 
Malyar |
by Chris Langham LTSC |
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i It has long been predicted that self coloured plastics, achieved by pigment addition during manufacture, would eliminate the need for plastic coating. Whilst this is true, new areas have developed, thus creating an overall increase in the volume of plastics being |
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coated. |
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The reasons for coating plastics are briefly summarised in Table 3-1. |
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TABLE 3-1: SOME REASONS FOR COATING PLASTIC SUBSTRATES
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The final and most important reason must be decoration and aesthetic appeal. The utilisation of a coating gives added value and luxury to a relatively cheap injection moulded component. These decorative, designed-in, finishes include suede coatings which incorporate fine coloured, acrylic or urethane beads (grades start at 6-8 |im). In addition, there are the protein paints with micronised collagen dispersed into the coating. The latter forms an almost breathable coating, able to absorb moisture and perspiration, releasing it over an extended period of time. It also imparts a soft silky feel and even gloss to the component.
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