The phenomenon of bubbles appearing during the processing of wire mesh is a common problem. So how to solve this phenomenon? If there is a problem in the process of screen printing, it will affect the printing process. Let's take a look at the phenomenon of bubbles in the silk screen in those cases.
The solution to the cause of bubble generation in the screen printing screen printing process.
1. If the screen printing mesh ink is too viscous, it needs to be agentd by the screen when the substrate and the screen are separated. After the excess ink viscosity range, the ink will fall back to the surface of the substrate. When the ink falls back, it will cover another part. Lead to the generation of bubbles. Solution: The best solution is to dilute the ink with open oil.
2. The shape of the ink scraper is not suitable. If the scraping part of the scraper is too flat or the arc is wrong, it will also cause the generation of bubbles. Solution: Replace the appropriate screen scraper.
3. Look at the surface of the substrate for dust and debris. If there is dust on the surface of the substrate during silk screen printing, the bubbles generated after printing are actually dust particles.
This problem mainly depends on the printing environment. Temperature control, humidity control, and dust-free must be in place.
4. The printing speed is too fast or the printing speed is not uniform. Solution: Print at a constant speed.
There are several points in the process of screen printing mesh processing:
Before the silk screen printing, the surface of the product should be cleaned, and the surface of the substrate should not be covered with dust and other impurities.
After all the inks have been prepared with the thinner, let them stand for half an hour, and then the bubbles inside are automatically removed before they can be used.
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