A low voc environment-friendly alcohol-free printing process

Abstract

The invention relates to a low-VOC environment-friendly no-alcohol printing process, and belongs to the technical field of the printing process. The low-VOC environment-friendly no-alcohol printing process includes the following steps of S1, preparing a fountain solution; S2, installing a printing plate on a printer; S3, cleaning a rubber roller on the printer, wherein specifically, the rubber roller is coated with color changing paste, a calcium removing agent and a cleaning agent in sequence, the printer idles for 5-10 minutes and is then cleaned with clear water; S4, wetting the rubber roller through the fountain solution prepared in the step S1, and conducting trial printing through ink; and S5, wetting the rubber roller through the fountain solution prepared in the step S1, and conducting formal printing through ink. The low-VOC environment-friendly no-alcohol printing process has the advantages that a calcium layer on the rubber roller can be cleaned, the blockage of the calciumlayer on the surface of the rubber roller is reduced, and therefore the printing quality is improved.

Description

technical field [0001] The invention relates to the technical field of printing technology, in particular to a low-VOC, environment-friendly and alcohol-free printing technology. Background technique [0002] The graphic part and the non-graphic part on the lithographic printing plate are almost on the same plane. When printing, in order to make the ink distinguish the graphic part or the non-graphic part of the printing plate, firstly, the water supply device of the printing plate part Water is supplied to the non-graphics portion of the printing plate, thereby protecting the non-graphics portion of the printing plate from ink wetting. Then, ink is supplied to the printing plate by the ink supply device of the printing part. Since the non-graphic part of the printing plate is protected by water, the ink can only be supplied to the graphic part of the printing plate. Finally, the ink on the printing plate is transferred to the blanket, and the pressure between the blanket c...

AI Technical Summary

Problems solved by technology

[0004] The above-mentioned existing technical solutions have the following defects: during the printing process, paper dust, impurities and ink will gradually accumulate and adhere to the rubber roller, and because the water contains calcium ions and magnesium ions, water-insoluble precipitates will also be formed and gradually accumulate on the rubber roller, thus affecting the smoothness of the surface of the rubber roller and affecting the printing quality

In actual production, some residual impurities accumulate on the surface of the rubber roller. Although some residues can be cleaned with water or solvents in the post-press process, there will still be some residual impurities left on the surface of the rubber roller. In the hole, long-term residue accumulation will cause the surface of the rubber roller to clog and scale

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