Pearlescent anti-counterfeiting ink is a variety of special inks prepared from synthetic inorganic crystal materials, natural pearl mica powder and other color pigments that can emit special color light-pearlescent pigments and corresponding linking materials. It can make the printed products have a particularly beautiful luster, and the following items should be noted before the printing process: 1. Features of pearlescent anti-counterfeiting ink (1) Pigment is vulnerable: pearlescent pigment is made of titanium dioxide (or other metal oxides) coated with mica, which has a flaky structure and is very fragile and easily damaged. (2) Large particle size of pigment: The size of commonly used mica titanium pearlescent pigment reaches 25μm, and the thickness is 0.2 ～ 0.5μm. (3) Transparency has an effect on the pearlescent effect: The pearlescent effect of the pearlescent anti-counterfeiting ink mainly comes from the refraction and interference of the incident light. If the transparency of the ink layer is low, the originally abundant light will be absorbed and lost. Therefore, when choosing an ink binder or varnish, choose a material with the best possible transparency. 2. Precautions for use (1) Suitable for printing of solid color blocks Due to the large particle size of the pearlescent anti-counterfeiting ink pigments, there are few ultraviolet fluorescent ink particles carried on the dots. For example, a 2% dot can only carry one pigment particle, which is difficult to ensure the reproduction of small dots. The ink is not suitable for printing screen-mesh products, and is best used for printing solid color patches. (2) Dirty phenomenon on the back When printing pearlescent anti-counterfeiting ink, the backside is particularly prone to dirt, which is mainly due to the large particle size of the pearlescent pigment, and in order to increase its fluidity, a large amount of linking material is added, which makes the special ink become relatively rare, drying time Lengthen. The following measures can be taken to control and solve: First, strictly control the temperature and humidity of the workshop, the temperature is controlled at about 20 ℃, and the humidity is controlled at about 55%. The second is to keep the amount of water as small as possible while ensuring the balance of water and ink. The third is the appropriate amount of powder spraying in the paper collection section, but it should be noted that the amount of powder spraying should not be too large, otherwise it will affect the gloss of the pearl anti-counterfeiting ink. In addition, it is best not to use dry oil to increase the drying speed of pearlescent anti-counterfeiting ink. If you must use dry oil, you must use white dry oil. Red dry oil will affect the appearance of pearlescent effect, and the amount of dry oil should not exceed 2 %. Adjustable folding table,High Quality Adjustable folding table,Adjustable folding table Details, CN ZHEJIANG HUZOLI METAL PRODUCTS CO.,LTD , https://www.zlplasticfurniture.com