Pearlescent pigments have excellent dispersion force, generally only a slight stir mixed with low viscosity printing inks. As pearlescent pigments are layered, so only slightly when mixed with the ink mixing, avoid rude mechanical treatment, in order to avoid damage to the surface of pearl powder. Typically, the pearlescent pigment in printing ink production process of adding the last one. Use dispersing machines and high-speed mixer, a batch of products must be consistent with the shortest mixing time, it can avoid the color difference between product batches. Had to use a three-roll mill in the case of large roll gap adjustment possible, and in the shortest possible time to complete the mixing, so as not to affect the gloss pigment structural damage. Binders make use transparent material, avoid the use of opaque and additive effects of scattered light pearl effect. organic pigments
Judgment containing pearlescent pigment inks, overprint varnishes and coating effectiveness, on the substrate by the pigment distribution is uniform, depending only pigments are arranged in parallel with the substrate surface was the best. Suitable substrates can avoid the adverse effects of the printing effect, with a smooth, flat surface of substrates can arrange smooth gloss paint works best. In addition, plate, mesh lines between the pigment particle size, the optimum viscosity of the ink, the printing speed, drying conditions to avoid flocculation of the pigment ink dispersion, also very important. Pearlescent pigments scratch resistant, insulation, good acid and alkali.
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