Colourtone Masterbatch overcame a key obstacle to the automated sorting of plastics for recycling. Near Infra-Red (NIR) spectroscopy and optical scanning in the visual wavelengths have sped up the process. A major limitation was the recognition of black and other coloured plastics that absorb infrared light. With Vynacol, Colourtone Masterbatch incorporates non-infrared absorbing pigments into the prime polymer to enable automatic sorting. Proposed reclassification of “recyclable” to materials to those that can be automatically sorted is encouraging companies to consider “end of life” as part of the design criteria.
COLOURTONE MASTERBATCH Ltd
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