In the printing work of the screen printing machine, various problems are inevitable, such as the occurrence of bubbles in the substrate after the screen printing machine is printed, which is also a common phenomenon. All-pass screen printing will share with you how to deal with the problem of silk screen bubbles appearing on the substrate after printing on the screen printer.
The first is the all-pass screen printing for everyone to explain how these bubbles on the substrate in the printing work of the screen printing machine.
1. The screen printing ink is too viscous. When the substrate and the screen are separated, it will be agented by the screen. After the ink is out of the range of ink viscosity, the ink will fall back to the surface of the substrate, but the ink will fall off and part of it will be covered. The generation of bubbles.
Solution: The best solution is to dilute the ink with open oil.
2. There are dust and debris on the surface of the substrate. If there is dust on the surface of the substrate during silk screen printing, the bubbles generated after printing are actually dust particles.
Solution: The only way to solve this problem is to clean the surface of the substrate before printing.
3. The shape of the ink scraper is not suitable. If the scraper portion of the scraper is too flat or the arc is wrong, it will also cause bubble generation.
Solution: Replace the appropriate screen scraper.
4. The printing speed is too fast or the printing speed is not uniform.
Solution: Print at a constant speed.
In addition, we can add defoamer to the ink to prevent it in advance.
I believe that the above methods can help screen printing companies in the printing of screen printers.
