Pearlescent pigments are chosen for their distinctive pearl luster, metallic reflection, interference color, and sparkle. Yet in powder coatings, a pigment that looks brilliant in a laboratory sample can appear dull, cloudy, flat, or uneven after production spraying. This gap between raw pigment appearance and finished coating performance is the key issue explored in this article. The final pearl ...

Abstract. Pearlescent pigments can make weld lines, flow-related bands, and local bright-dark differences more visible in injection-molded plastics because their plate-like particles are sensitive to melt flow and orientation. Effective troubleshooting therefore requires control of both physical weld-line formation and the optical orientation of the pigment flakes. This guide explains the main cau...