Color printing package blade line removing method

Abstract

The invention discloses a color printing package blade line removing method. The color printing package blade line removing method includes eight steps including gravure manufacturing, printing ink mixing, printing oil treatment, equipment installation, energy-saving drying treatment, printing detection, blade line removing and rolling. Installed equipment includes an ink scraping mechanism. The ink scraping mechanism comprises a printing ink box, a gravure roller, a printing scraper and an air pipe. The bottom of the gravure roller is tainted with printing ink in a printing ink box, the printing scraper is fixed to one side of the printing ink box through a screw, an edge of the printing scraper is attached to the gravure roller, the air pipe is arranged above the printing scraper, and the air pipe is used for blowing air to the position, not provided with a pattern, on the gravure roller. The method is convenient and effective, blade lines generated in the printing process are well treated, the phenomenon that the printing quality of a packaging film is reduced due to the existence of the blade lines is avoided, waste of the packaging film is avoided, resources are saved, and theprinting quality is improved.

Description

technical field [0001] The invention relates to the technical field of packaging and printing, in particular to a method for cleaning color printing and packaging knife lines. Background technique [0002] Gravure printing is to make the entire surface of the printing plate be covered with ink, and then use a special scraping mechanism to remove the ink in the blank part, so that the ink only stays in the cells of the graphic part, and then under the action of greater pressure , transfer the ink to the surface of the substrate to obtain printed matter. Gravure printing belongs to direct printing. The graphic part of the printing plate is concave, and the degree of depression varies with the level of the image, and the blank part of the printing plate is raised and on the same plane. [0003] During the printing process, due to poor ink quality and other reasons, the packaging film will produce knife lines with different thicknesses after printing. The existing printing met...

AI Technical Summary

Problems solved by technology

[0003] During the printing process, due to poor ink quality and other reasons, the packaging film will produce knife lines with different thicknesses after printing. The existing printing method is to check the printed pattern after printing. Only after printing can we know whether there are knife lines. This method is time-consuming, labor-intensive, and wastes resources. After processing, it is impossible to determine whether the knife line is completely cleaned. Due to the existence of the knife line, the packaging film with poor quality has not been processed.

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