Drying process of ink
In the production of tinplate printing, the drying of ink is a complicated physical and chemical reaction process. It is necessary to properly control the drying speed of the ink and grasp the physical and chemical mechanisms in the ink drying, so as to effectively perform fast printing operations and ensure product quality. If the ink dries too quickly, it will reduce the normal transfer performance of the ink, which will affect the normal production process; it will cause the print to be dim, the ink color will be light, and the ink on the printing plate and the roller surface will be blocked, which will hinder the ink in the transfer; The layer expands outwards; excessive use of desiccant will increase the ink absorption, and the blank part will become dirty. And the ink drying too slowly can cause overprinting difficulty, adhesion, adhesion, etc., and decrease in firmness; it is easy to cause scratches during transportation. Therefore, the drying speed of the ink should be appropriate. Too fast or too slow is disadvantageous.