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Static electricity in printing and coating

Release time:2022-06-29 Views:80Second

Static electricity in printing and coating

Electrostatic hazard:

Due to the influence of static electricity, the position of the paper on the paper conveyor is skewed, and it is not easy to fall when reaching the paper receiving platform. The paper on the paper receiving platform attracts each other and fits together, and the paper aligning device cannot tidy it, which will have a certain impact on the folding workers in the next process. Due to the mutual adhesion of the paper, double paper faults often occur The paper is not easy to walk on the paperboard, which will also cause the front gauge failure, resulting in inaccurate overprint, ghosting, text and text blooming and other phenomena. In addition, the paper with static electricity absorbs a lot of impurities and dust, making the printing ink unclear.

In printing, the ink is transferred and pressed evenly by the ink roller, ink table and printing plate at high speed, and the high-speed contact separation and friction between them will make the oiler generate static electricity, that is, flying ink. Some fly directly to the printed matter, making the printed matter splash dirty, and some fly to the printing plate and blanket, and then transfer to the printed matter. This is called transfer floating dirty, which often forms relatively fixed light ink spots, which will not disappear until the flying device on the printing plate or blanket is removed, which not only affects the quality of the printed matter, but also pollutes the equipment.

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