Shijiazhuang lottery ticket printing "scratch card printing is our strong point, in this respect, our factory technology is in the forefront of the industry." In the face of small editor asked about scraping card problems. Scraping cards, scratch cards, anti-counterfeiting tickets, anti-counterfeiting vouchers and other securities printing, the process requirements are quite high, many aspects are using special machines or professional technology for printing. The following is the introduction of UV offset printing process knowledge, UV in offset printing in the process of attention, mainly in the following aspects.
（1） UV printing has high requirements on paper surface strength, which is not enough, which is easy to cause scuffing fault. When gold and silver paper are used for scraping card printing, due to its smooth surface and low affinity to ink, it is easy to pull off the first color ink during the second color overprint
（2） In color printing, the ability of various pigments to absorb UV photons is different, and the transmittance from high to low is m, y, C, BK, so the curing degree of each color ink is also different. The printing color sequence is BK, C, y, m, so that the ink with poor transmittance can absorb photons as much as possible and enhance its curing effect.
（3） The use of alcohol moistening system can reduce the surface tension of the ink and promote the curing effect. In the printing process, the oil repellent area (blank part) of the printing plate can be strengthened by using the moistening solution to ensure that the oil repellent area is fully ink friendly and the hydrophilic area is not inked.
（4） Different inks should be selected for different substrates. The light transmittance, curing rate, covering ability and glossiness of printing surface should be considered comprehensively.
One of the reasons why Xingzheng anti-counterfeiting printing has been established in the industry for many years has been supported by many businesses. For example, Shuanghui, Coca Cola, Tebu, Evergrande Bingquan and other businesses have designated Xingzheng as their scratch card manufacturer.
