What is the main cause of colored lines on the aluminum foil printing surface? How to solve it?
There are many reasons for colored lines on the aluminum foil printing surface, and corresponding measures should be taken according to the specific situation. Generally speaking, the main causes of this printing failure and the corresponding solutions include the following.
(1) The angle, position and hardness of the scraper are inappropriate
The corresponding solution is: first adjust the angle and position of the scraper. If the problem still cannot be solved, you can consider replacing the scraper with a suitable hardness. (2) The quality of printing ink does not meet the requirements, the resin and pigment in the ink are not fully ground, and the particles are too large. The corresponding solution is: replace the ink that meets the quality requirements, or use steel mesh to filter to remove large particles.
(3) There are hard impurities and particles where the black scraper is close to the printing plate roller, which may also cause color lines to appear on the printing surface.
The corresponding solution is: grind or replace the black scraper, and remove hard impurities and particles on the plate roller
