Compliance & Certification | Technical Application Industrial coatings and food packaging are the two colorant application scenarios with the greatest differences in compliance requirements: the former looks at China’s Ten-Ring Label and VOC limits, while the latter looks at FDA, EC 1935/2004, and other food contact regulations. The same colorant manufacturer must prepare two completely […]
Compliance & Certification | Technical Application Colorant export is never simply about “getting the goods there.” It is about “documents first, compliance first.” The EU market has three hard thresholds—REACH, RoHS, and EN71-3—while the United States has TSCA and Japan has CSCL. The absence of any one of these can lead to return shipments, notifications, […]
Over the course of a week, we moved from basic colorant concepts to coating color matching processes and construction implementation. There is a lot of information, but what is truly usable on site is often a table that can be quickly consulted. This article condenses the core points of Week One into a “Selection Quick […]
The most headache-inducing thing in color matching is not being unable to match accurately, but “there is always a little difference every time.” Where these color differences come from, how much is qualified, and how to manage them determine whether your delivery is stable. Starting from the core concept of ΔE, this article explains the […]
Common Quality Indicators of Coating Colorants and Key Points of Incoming Quality Control (IQC)
Colorant Color Becomes Lighter After Storage? These 3 Steps Help You Troubleshoot the Cause
Waterborne colorants use water as the continuous phase. Theoretically, the freezing point is lower than pure water, but in warehouse storage and transportation in northern winters, extreme low temperatures may still freeze them. What consequences freezing brings and whether they can be directly thawed for use are what many customers care about most in winter. […]
Water separation, floating color, thickening, or even flocculation after adding colorant to coating is often a signal of incompatibility between the colorant and base material. Compatibility is not mysticism; it can be identified and avoided before production through standardized methods. This article gives three commonly used compatibility testing methods and explains the response approach when […]
Filtration is the step most easily simplified in the colorant use chain and the step most likely to plant quality hazards. If the filter mesh is too coarse, particles, skin, and impurities enter the system, and the coating film shows graininess and color spots; if too fine, not only is filtration efficiency low, but effective […]
Many newcomers to color matching have a confusion: the color seen on the screen is clearly described by three values of red, green, and blue, so why can’t it be matched with three colorants of red, yellow, and blue in actual color matching? Behind this are two completely different color rendering logics—screens rely on luminous […]