Screen printing machine manufacturer: screen printing machine bubbles, let Zhengfei intelligent technology to tell you about it

　　Screen printing machine in the printing process, the substrate in the ink spot after printing sometimes appear bubbles, how to deal with it, what method to deal with it?

　　One, the main causes of air bubbles produced by circuit board screen printing machine:

　　1. Poor processing before printing

　　Substrate printing, to keep clean, because the substrate surface easy to adhere to dust and oil and other substances.

　　2. The printing speed is too fast or uneven

　　When printing, the printing speed can be reduced appropriately to maintain the uniformity of the printing speed.

　　3. The ratio of mixing ink is wrong

　　Adjust the ink, add the proportion of defoaming agent is not correct, the amount of defoaming agent in the ink is generally about 0.1 ~ 1%, if more than the prescribed amount will play a foaming effect.

　　4, pay attention to red, blue, green and other transparent ink

　　Red, blue, green and other transparent ink, due to the small proportion of organic pigment particles, these ink connectors have the characteristics of easy foaming. If adding the corresponding diluent, viscosifier or viscosifier, can also make the ink into a good adaptability, stable printing ink.

　　Screen printing ink transfer even after foaming, as long as the substrate wet and ink fluidity is good, ink film surface bubbles will gradually eliminate, ink formation flat printing ink film. If the ink bubble is not eliminated, the ink film will form a ring uneven film surface. General ink bubbles through the screen, because the screen can debubble. In addition, ink with hot water or boiling water mixed, there will be a better defoaming effect.

　　If the production bubble cannot be handled, please contact professionals in time to handle it. Do not handle it yourself to avoid accidents.