Ink screen printing squeegee pressure effect is what?

Ink small screen printing squeegee pressure refers to the doctor blade pressure roller roller pressure, ink screen printing squeegee pressure has two main roles: First, the non-graphic area is not only outside the net pit scratch clean the ink; the second is Resists the impact of ink to prevent ink from flowing out of the blade.

What is the role of ink small screen printing squeegee pressure?

Squeegee pressure is too small, easy to make non-graphic area version of the fog or knife line, when the printing speed increases, the plate roller speed increases, the version of the ink from the roller speed increases, the impact of ink on the blade increases , So easy to make squeegee lift, seriously affecting the quality of printed matter. Squeegee pressure is too large, will reduce the ink transfer rate, on the roll and scraper blade wear are great. The company is located in:

Ink screen printing squeegee The size of the pressure is determined by its role, that is: P = P1 + P2

P for the ink small screen printing squeegee scraper required pressure

P1 is the non-graphic area is not only the net hole net scratch the required pressure

P2 is the pressure required to resist the impact of the ink

The pressure P2 required to resist the impact force of the ink is related to the pressure angle of the doctor blade and the linear velocity V of the ink. That is: P2αCOSαV2

As a result, the larger the pressure angle of the small screen printing squeegee, the smaller the P2 is and the smaller the pressure P required for the screen printing squeegee. The smaller the printing speed is, the smaller the linear velocity V of the ink is and the smaller the P2 is. The smaller the pressure P is; on the other hand, the smaller the pressure angle of the squeegee is, the larger the P2 is and the larger the pressure P required for the small screen printing squeegee. The larger the printing speed is, the larger the linear velocity V of the ink is and the larger the P2 is. The pressure P required for small screen printing squeegee is also larger.

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