A packaging printing process that prevents excessive emulsification and residue formation of residual ink

Abstract

The invention discloses a packaging box printing process for preventing excessive emulsification and residue formation of residual ink, relates to the technical field of printing process, and comprises the following process steps: (1) regeneration of residual ink; (2) heating of printing plate cylinder; (3) Packaging box printing; (4) Drying of the ink layer. The present invention quickly realizes the reasonable utilization of residual ink by regenerating the residual ink, and avoids economic loss and environmental pollution caused by discarding the residual ink; and weakens the emulsification of the residual ink by heating the printing plate cylinder, and then The excessive emulsification of residual ink and the formation of residue can be further prevented by the combined use of regenerated residual ink, so as to ensure the printing quality of graphics and text on the packaging box.

Description

Technical field: [0001] The invention relates to the technical field of printing technology, in particular to a packaging box printing technology for preventing excessive emulsification and residue formation of residual ink. Background technique: [0002] In the printing process, slight emulsification of the ink is necessary for the smooth progress of offset printing, but excessive emulsification will affect the printing quality. Under the premise that the surface of the printing plate is not dirty, the degree of emulsification of the ink must be reduced as much as possible, because excessive emulsification will reduce the transparency of the ink, especially for color printing, it will affect the subtractive color mixing of the three primary color dots, so that the color cannot be restored correctly. [0003] Ink residue is unavoidable. The residual ink usually contains a large amount of ink skin, granular residue and part of the fountain solution, and is often accompanied b...

AI Technical Summary

Problems solved by technology

[0002] In the printing process, slight emulsification of the ink is necessary for the smooth progress of offset printing, but excessive emulsification will affect the printing quality

Under the premise that the surface of the printing plate is not dirty, the degree of emulsification of the ink must be reduced as much as possible, because excessive emulsification will cause ink transparency to decrease, especially for color printing, it will affect the subtractive color mixing of the three primary color dots, so that the color cannot be restored correctly.

[0003] Ink residue is unavoidable. The residual ink usually contains a large amount of ink skin, granular residue and part of the fountain solution, and is often accompanied by severe ink emulsification. It is a pity to throw away the residual ink and use it again. Not as good as new ink

In order to ensure the printing quality, reduce the defective rate, and avoid increasing the process cost, most manufacturers have to discard the remaining ink, which has caused great pollution to the environment.

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