Pearlescent pigments have been widely used in the printing ink industry to enhance its special decorative effect: from cosmetics packaging, cigarette cases, drinks labels, gift packaging, to business cards, wall paper and many more.
Flexography printing, offset printing, gravure printing and screen-printing are the most widely used printing methods. Each method has unique advantages. Comparing to traditional pigments, the components and structure of pearl pigments are quite different. So there are some cautions we need to pay attention to:
- -- Pre-wetting: we recommend pre-wetting pearlescent pigments before mixing it into the ink system. This will stop pearlescent pigments from clogging the scraper.
- -- Dispersion: pearlescent pigments are easy to disperse. Low speed stirring is enough to evenly disperse it in the low viscosity inks. We do not recommend using three-roller mill, high-speed or grinding machine which may damage the pearlescent pigments. During the mixing process, a fixed lower speed and shorter time is recommended.
- -- Transparent binder: transparency of the ink is the key factor to express the complete pearl effect, otherwise the pearl effect could be covered by the mass tone.
- -- Narrower article size distribution and lower oil absorption of pearlescent pigments are key concerns
Pritty provide both commodity and exclusive products to printing ink manufactures: