The technique of using mirror ink in printing
Release time:
2018-06-21
Printing skills of mirror ink: 1. First of all, it should be understood that the mirror ink is as thin as water, and the real money fraud printing skill is the key. When the printing speed is slow, on the one hand, the mirror ink will leak down the screen plate. On the other hand, the mirror ink is easy to absorb moisture in the air, and the mirror effect obtained after printing is not good. Therefore, during printing, the mirror ink must be printed continuously and quickly, only in this way can the printing be carried out smoothly. Even if the speed of checking the workpiece while printing, it will affect the printing effect, such as blocking the screen, ink printing not going down, slagging on the screen, etc. 2. The environment temperature and humidity when printing mirror ink is very heavy
mirror ink printing techniques:
1. First of all, it should be understood that the mirror ink is as thin as water, and the printing technique of real money is the key. When the printing speed is slow, on the one hand, the mirror ink will leak down the screen plate. On the other hand, the mirror ink is easy to absorb the moisture in the air, and the mirror effect obtained after printing is not good. Therefore, during printing, the mirror ink must be printed continuously and quickly after being poured on the screen plate to print smoothly, even if the speed of checking the workpiece while printing, it will affect the printing effect, such as blocking the screen, ink printing not going down, slagging on the screen, etc.
2. The environmental temperature and humidity when printing mirror ink is very important. Because the ink is easy to dry on the screen, it cannot be screen printed in an environment with large air circulation, otherwise it is very easy to block the screen and become agar-like. At the same time, when the air humidity is large, the mirror effect is poor. Therefore, when screen printing, avoid air flow and humidity as much as possible, and screen printing environment should strengthen dehumidification treatment. If the mirror ink is stored at 20 ° C and screen printed at 20 ° C, the printability will be better.
3, because the ink is as thin as water, so should choose high mesh screen, not only that, the rubber hardness should be harder, can be more than 80 °.
4. The mirror ink must be fully stirred before use, so that the metal powder and the resin must be fully mixed evenly to ensure the appearance of the mirror effect, otherwise, it will affect the production of the mirror effect.
5. The tension of the screen plate is slightly lower, the screen distance is also adjusted closer, and the scraping pressure of the scraper is appropriately reduced so as to produce the mirror effect.
6. When mechanical printing, the ink return knife used cannot be made of hard aluminum or stainless steel, but should use a colloid ink return knife to ensure that the screen-printed mirror ink is evenly coated and the mirror effect is consistent.
7. The mirror effect of mirror ink is related to the drying method. In terms of mirror effect, natural drying is not as good as heating drying. Note that the heating temperature and drying time should be consistent, otherwise the mirror performance and color saturation will be different.
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