The coil and extrusion coatings group of Pittsburgh-based PPG Industries has issued a white paper titled, “Performance Expectations for UV-Durable Coil Coatings.” The six-page document highlights differences between silicone-modified polyester (SMP) and super-polyester coatings in comparison to 70 percent polyvinylidene fluoride (PVDF) coatings. It also explains how polyester and PVDF coatings are formulated and defines performance characteristics such as chalk and fade.
The white paper seeks to help readers identify the best coatings for their applications and budgets. One section illustrates the advantages of applying a clear topcoat to metal building panels and components as part of a three-coat PVDF coating system for use in industrial and seacoast environments.