Inline Colour and Appearance Measurement
topic
Inline spectrophotometric colour measurement on coating lines uses scanning or fixed sensor heads measuring CIE L*a*b* colour coordinates and opacity by reflectance at multiple wavelengths across the coated substrate width after drying, comparing against target colour specification and triggering alarm or automatic correction when colour deviation exceeds defined tolerance limits, enabling production of consistent colour-matched coated fabric across long production runs.
Role
Maintains colour consistency in pigmented coated textiles through continuous measurement and comparison against specification that detects colour drift from pigment concentration variation, compound viscosity change, or coating weight deviation before significant lengths of off-specification material are produced, reducing the cost of colour-related rejects that would require recoating or downgrading of the coated fabric production.