TQC, the Dutch developer of paint test equipment, has launched a new generation of Cupping Testers with complementary color selection and other updated features.
With normal white light, the reflections from coating and defects are equal in intensity, TQC says. With complementary color selection, on the other hand, coating defects will manifest as lines, cracks or marks in different colors. Green light on a red panel increases the contrast. The panel looks black while any defect with different color is highlighted.
|Under warm white light (left), a red test panel hides coating defects. The green light shows the defects in sharp contrast.|
The technology allows easier assessment of defects and reduces strain on the operator’s eye, according to TQC.
Changing Paint Technology
Paints have changed significantly in the last decade, bringing higher-solid and lower-VOC formulations, more water-based products, changes in elasticity, and nanotechnology advances.
TQC’s new-technology Cupping Test, a benchmark test for many coatings, was designed to keep pace with these changes and new testing demands.
The cupping test is now mandatory in Qualicoat, QIB and GSB, making it not only a tool for high-end coating developers, but also a quality-control basic for coating companies, according to TQC.
A second new feature is micrometer-accurate calibration. Previously, the company reports, calibration was performed by using a steel plate and pressing the indenter against the plate until the operator noticed resistance. Usually, this meant pressing the indenter into the plate and having an offset, said TQC.
The new method allows users to perform an accurate electronic calibration.
More information: www.tqc.eu.