Yellow Tipping Paper reverse gravure ink use method and technique
Nov 21, 2022
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Yellow Tipping Paper reverse gravure ink use method and technique
1, the reverse gravure ink is thin as water, printing skills are the key, when the printing speed is slow, on the one hand, the reverse gravure ink will leak down the screen, on the other hand, the reverse gravure ink is easy to absorb water in the air, after printing the mirror effect is not good, therefore, in printing, the reverse gravure ink must be poured into the screen after continuous rapid printing, in order to complete the smooth printing. That is, the speed of checking the workpiece while printing will affect the printing effect, such as blocking the screen, ink printing, slag formation on the screen, etc.
2. The tension of the screen is slightly lower, the screen distance is also adjusted closer, and the pressure of the scraper is properly reduced, otherwise it will destroy the production of the mirror reflection effect.
3, the mirror reflection effect of gravure ink on the opposite side is related to the drying method. In terms of the mirror effect, natural drying is not as good as heating drying. It is necessary to keep the temperature and drying time consistent, otherwise the mirror performance and color saturation will be different.
4, the environmental temperature and humidity of gravure printing ink on the opposite side of printing is very important, because the ink is easy to dry on the screen, so it can not be used under the air flow, otherwise it is very easy to block the net, when the air humidity is high, the mirror effect is poor, therefore, as far as possible to avoid air flow and humidity.
5. In mechanical printing, the ink-return knife can not be made of hard aluminum or stainless steel, but should be made of glial ink-return knife to ensure that the gravure ink on the opposite side is evenly coated, so that the mirror effect is consistent.
6, the reverse gravure ink must be fully stirred before use, so that the aluminum powder and resin should be fully mixed evenly, to ensure the appearance of the mirror effect, otherwise, it will affect the production of mirror effect.