The failure of the flexographic printing machine should be solved in time to avoid affecting the normal printing, so how to eliminate the failure of the flexographic printing machine?
1. The phenomenon of periodic ink color changes on the printed matter with uneven ink color. The methods of exclusion include: correcting the roundness of the plate cylinder, adjusting the angle and pressure of the squeegee, or replacing the squeegee with a new one.
2. The phenomenon that the blocking ink dries up in the cells of the printing plate, or the cells of the printing plate are filled with paper wool and paper powder, is called blocking. The methods of elimination are: increase the content of solvent in the ink, reduce the drying speed of the ink, and use paper with high surface strength to print.
3. The phenomenon that the ink overflows the solid part of the printed matter and spots appear. The methods of exclusion are: adding hard varnish to increase the viscosity of the ink. Adjust the angle of the squeegee of the gravure printing machine, increase the printing speed, and replace the deep cell printing plate with the shallow cell printing plate, etc.
4. There are traces of the squeegee on the scratched print. The methods of exclusion are: printing with clean ink that is free from foreign matter. Adjust the viscosity, drying, and adhesion of the ink. Use a high-quality squeegee to adjust the angle between the squeegee and the printing plate.
Therefore, the failure of the flexographic printing machine should be solved in time.
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