If there is no problem with the ink quality, what are the causes of air bubbles during the screen printing process? How to deal with it?

Reasons and solutions:

â‘´ The viscosity of the ink is not correct, and it must be thinned.

⑵The scraping speed is fast and the screen distance is large. The air bubbles are pulled out because the screen springs away from the substrate too quickly.

(3) The wrong solvent is used, and the miscibility with the ink is poor, so the special solvent for the ink must be used.

â‘·Using fast-drying solvents under the condition of high temperature and low humidity, the surface conjunctiva is too fast and bubbles appear.

⑸Bubble caused by the state of the substrate surface is not easy to wet.

⑹ Ink expired and expired.

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