Pearlescent pigments are a type of specialty pigment used in the manufacturing of coatings, inks, plastics, and cosmetics. They are made of a substrate coated with metal oxides, such as titanium dioxide or iron oxide, and mica flakes. The thickness and spacing of the coatings determine the color and intensity of the pearlescent effect.
In flexographic coatings, pearlescent pigments are used to add visual effects to printed materials, such as metallic or iridescent finishes. When light hits the pigment particles, the multiple layers of metal oxides and mica flakes cause the light to refract and reflect at different angles, creating a shimmery or pearlescent effect.
To achieve the desired effect, pearlescent pigments are often added to clear or colored coatings, such as varnishes, overprint varnishes, or UV-curable coatings. The pigment particles are dispersed evenly throughout the coating to ensure consistent color and coverage. Pearlescent coatings are commonly used in the packaging industry for products such as labels, bags, and pouches to add visual appeal and attract consumer attention.