Electrostatic-induced failure in squeegee printing

The squeegee prints paper with static electricity, causing double-sheet failure. During the process of printing the thin paper by the doctor blade, when the paper is sent to the paper feeding mechanism by the separation of the separation head, two or more sheets are often sent by mistake, resulting in the failure of the doctor blade printer to operate normally.

Excluded: It was observed that some of the paper was not separated during the separation process. When the paper is sucked by the paper suction nozzle, it doubled. The paper feeding nozzle also sucked the double-sheet paper and sent it to the paper feed roller. It must be detected by a double detector and signaled. If the inspection squeegee printing failure is not caused by suction, the analysis is due to static electricity in the paper, causing the two sheets of paper to be sucked together and not fixed. The blowing nozzle blows apart, and the double sheet is also dispensed by the nozzle Suction, causing the delivery nozzle to mistakenly send double sheets. At this time, the relative humidity of the doctor blade printing shop should be increased, and at the same time, the relative humidity should be increased when the paper is to be opened to allow the paper to maintain a certain moisture content. When the doctor blade is printed, the double-sheet failure can be eliminated. In the high-speed printing gravure printing machine, in order to completely prevent double-sided failure caused by static electricity, electrostatic brush electrostatic brush should be installed.