色差计在检验家具漆膜方面的应用

Application of Color Difference Meters in Furniture Paint Film Inspection

家具漆膜检验是家具质量检验的重要项目之一,漆膜的分类决定着重金属项目的检验与否。家具漆膜分为清漆和色漆,国家标准规定重金属限量项目仅限于色漆,清漆与色漆的分类方法主要依靠漆膜的外观颜色。色差计是在颜色测量方面比较成熟的仪器,其是以国际照明委员会(CIE)推荐的颜色标准色度系统为测量原理,用数字坐标代表相应的颜色,测量数字坐标在标准色空间的距离,以具体的数值表示颜色的差别,数值越大表示颜色变化越大。这种量化的测量方式在实际操作中方便、快速、准确,避免了由人为视觉产生的误差,并且易于在大范围内推广使用,对检验家具漆膜起到了良好的促进作用。

Furniture paint film inspection is one of the important items of furniture quality inspection and paint film classification determines whether it is necessary to conduct inspection of heavy metal items. Furniture paint film comes in varnish and color paint and national standards provide that only color paint applies to heavy metal limited value items. The classification method for varnish and color paint mainly depends on the appearance color of paint film. Color difference meters are mature instruments used for color measurement, with the standard colorimetric system recommended by the International Commission on Illumination （CIE） as the measurement principle, with a digital coordinate representing corresponding colors. The distance of the digital coordinate in the standard color space is measured, with a specific value to express the difference in color. The greater the value, the greater the color change is. This quantified measurement method features convenience, rapidness and accuracy in the actual operation, and can help avoid human visual errors, easy to be implemented on a large scale, thereby promoting the furniture paint film inspection.