Coating Colour and Opacity Control
topic
Coating opacity and colour control uses titanium dioxide, carbon black, and organic pigment additions to coating compounds at 5 to 30 percent by weight to achieve defined opacity and colour in decorative, blackout, and light-blocking coated textiles, with pigment dispersion quality assessed by particle size analysis and grinding fineness by Hegman gauge measurement that verify complete pigment particle disaggregation required for colour uniformity and maximum covering power.
Role
Achieves the optical performance of opaque and coloured coated textiles through pigment type, concentration, and dispersion quality that together determine the light blocking, opacity, and colour uniformity of the finished coated product, with blackout coated fabrics for curtaining requiring complete light transmission blocking that demands minimum pigment concentration in the coating that is achievable only with fully dispersed fine particle TiO2 or carbon black.
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