Glass silk screen printing processing problems

Glass screen printing mesh can give the glass a good-looking pattern, and it is a headache when the pinhole phenomenon occurs. The causes of pinholes are also quite diverse. Many of them are currently for reasons that cannot be explained, and there may be quality problems. Pinholes are one of the most important inspection items in a printed product during the printing process.

1. Cleaning of the glass surface. The glass plate should be pre-treated before printing to make the surface clean and print immediately. Such as

After the glass has been processed, it will be printed again and will be contaminated again. After pre-treatment, it can remove dirt such as grease,

At the same time, dust attached to the surface can also be removed. Pay special attention to the fingerprint of the hand when you move the glass by hand.

On the printing surface, pinholes are formed during printing. ,

Dust and foreign matter attached to the plate. At the time of plate making, the washing and

developing will have some sols mixed in. Also in emulsion coating

At the same time, dust is also mixed in, and pinholes are generated when attached to the screen. When these are in the test, if you pay attention to the inspection, you can Discovered and made timely repairs. If dust and foreign matter adhere to the screen, blocking the screen opening will also cause pinholes.

Elephant. Before the official printing, you should carefully check the screen to eliminate the dirt on the plate;

It is not terrible to encounter problems, but we are afraid that we do not know how to solve them. When we encounter pinhole problems in screen printing, we need to solve them slowly. Don't worry.