Hiding Power Strips for OEM Coatings
These are used by industrial coatings laboratories, principally those involved with the automotive industry, to measure the hiding power of spray enamels. The strip is taped to a steel panel and the test coating sprayed to produce a “wedge” varying from thin at one end to thick at the other. After drying, a location on the strip of adequate visual hiding, or 0.98 contrast ratio, is determined and the film thickness measured electronically on the steel panel adjacent to that location. Conversely, a location of specified thickness is determined on the steel panel and the Contrast Ratio measured adjacent to that location.