In the process of pad printing bubble phenomenon, we should also have encountered this. Why does this happen? There must be something wrong with our screen printing process, there is no doubt about it! So let's take a look and see in those cases there will be bubbles.

Causes of bubbles in pad printing process and solutions:

1, because the screen printing ink is too thick, in the substrate and screen separation will be screen agent, beyond the range of ink viscosity, the ink back to the surface of the substrate, but in the ink will fall back at the same time will be part of the cover, resulting in the formation of bubbles. Solution: A good solution is to dilute the ink with boiling water.

2, to see whether the substrate surface dust and debris, if there is dust on the surface of the screen printing substrate, after the completion of the printing bubble, in fact, is dust particles. This problem depends largely on the printing environment. Temperature control, humidity control, dust-free should be in place.

3, the ink scraper shape is not appropriate, if the scraper or scraper part of the arc is wrong, it will also cause the formation of bubbles. Solution: Replace the appropriate screen scraper.

4. Printing speed is too fast or uneven. Solution: Uniform printing.