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In general, a hard squeegee produces more cuts than a soft squeegee. When the squeegee blade is damaged, a regular left and right ink trace is created on the substrate. Subtle squeegee gaps can be polished with fine sandpaper until it is clean and smooth, and if there is a large gap, it needs to be replaced. Therefore, when installing the squeegee, it must be flat. Carefully check whether the squeegee has a notch before loading the blade. Carefully grind it after mounting. If there is a knife-spinning phenomenon during the printing process, it must be stopped for grinding, and it is strictly prohibited to mix the squeegee oil. In ink.
In addition, during the printing process, the angle and pressure between the squeegee and the printing plate must be mastered to reduce the relative friction between the squeegee and the printing plate. In general, the angle between the doctor blade and the plate cylinder is 70° to 75°, the inclination is upward, and the blade pressure is controlled between 200 and 400 kPa.
The squeegee is a kind of part suitable for the printing machine. The squeegee is also an important component in the plastic gravure. The self-grinding squeegee with close material and moderate softness should be used.