TECHNOLOGY | COLOUR MEASUREMENT
Right: Spectra- Vision allows repeatable and consistent colour meas- urement of multi-coloured and/or textured materials
at a car in the showroom,” he says. “As well as colour and gloss, total harmony and appearance incorporating material texture and other visual aspects will need to be included. The challenge in colour measurement will be to combine spectro- photometry and 2D lighting technology into a single measurement device.”
can also be easily linked together to determine the ratio of recycled plastics to virgin material. The calculated recipes then contain both plastics in a pre-defined ratio and the colourants required for achieving this mixture. Help is provided for specific correction calculations for minor deviations in the colour of the recycled material. In this case, a known recipe for a similar mixture of polymer and recycled material can be used and the required correction can be calculated in just one step. Going forward, Ullrich says appearance will continue to be a major industry focus and the need for accurate colour measurement and manage- ment will remain essential. “Particularly in automo- tive interiors, with a wide variety of materials such as plastics, leather, textiles, metals and coatings now available, total appearance now addresses the sensations influencing the consumer when looking
Repeatable results Repeatable performance is a key priority in colour measurement and management, according to Datacolor. “When producing transparent, translu- cent and opaque materials, masterbatchers and compounders need to optimise colourant loads to achieve the desired colour cost effectively,” says Datacolor’s Rik Mertens. “In addition, it is necessary to ensure that colour quality is within tolerance from batch-to-batch. As well as reducing waste and minimising batch corrections, there is a need for more accurate first-time matches, mainly when matching translu- cent materials, to increase productivity of the colour development process. In order to achieve these goals, hardware solutions are needed that offer both transmission and reflectance colour measurement, as well as software that is equipped with industry specific indices and advanced algorithms for colourant calibration and colour matching. These new algorithms have been developed, tested and fine-tuned to better match and correct translucent material,” he says. Mertens adds there is also a requirement to
measure multi-coloured and textured material digitally, as well as samples that are too small in size and for which traditional spectrophotometers
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PHOTO: DATACOLOR
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