Powder coating thickness measurement and paperless QA
This article describes the technologies available to measure the thickness of cured and uncured coating powders. It reviews working principles and associated industry test methods and standards, and discusses recent trends in paperless quality assurance (QA).
Measurement of film thickness should be a routine event for all powder coaters (Figure 1). Regular measurement helps control material cost, manage application efficiency, and maintain finish quality. Powder coatings manufacturers recommend target film thickness ranges to achieve the best performance characteristics--and customers expect these parameters to be met.