Method for manufacturing gravure with laser anti-counterfeit lines

Abstract

The invention relates to a printing roll manufacturing technique, in particular to a method for manufacturing gravure with laser anti-counterfeit lines. The process comprises the following steps: mechanical processing, copper plating, grinding, manuscript making, frictioning, laser engraving, corroding and chrome plating. Compared with the prior art, the method has the advantages that: thick lines with a thickness of less than 0.06 millimeter are engraved in form of dotted lines; the thickness and length of the solid lines and the dotted lines are well controlled; the solid lines serving as lattice points and dotted lines serving as lattice wall are directly engraved by laser; the etch depth is 0.015 to 0.018 millimeter; after etching, the final distance between solid lines is 1 to 3 micrometers; and that the printed lines are thick and not broken can be ensured.

Description

[technical field] [0001] The invention relates to a printing and dyeing roll making technology, in particular to a method for manufacturing gravure with laser anti-counterfeiting lines. [Background technique] [0002] Ordinary electronic engraving gravure or laser engraving corrosion gravure line thickness is less than 0.06 mm, when the engraved lines are printed, it is often encountered that the lines are not solid or virtual, or the lines cannot be printed and are easily broken. The main reason is that the number of engraving lines is low If the dots are large, the number of dots composed of single lines is small, the network wall is thick, and the amount of ink is not enough during printing; or the number of engraving lines is thin and the dots are small, the number of dots composed of single lines is large, and the depth is shallow, which will also cause the amount of ink during printing. not enough. [Content of the invention] [0003] In order to overcome the deficie...

AI Technical Summary

Problems solved by technology

[0002] Ordinary electronic engraving gravure or laser engraving corrosion gravure line thickness is less than 0.06 mm, when the engraved lines are printed, it is often encountered that the lines are not solid or virtual, or the lines cannot be printed and are easily broken. The main reason is that the number of engraving lines is low If the dots are large, the number of dots composed of single lines is small, the network wall is thick, and the amount of ink is not enough during printing; or the number of engraving lines is thin and the dots are small, the number of dots composed of single lines is large, and the depth is shallow, which will also cause the amount of ink during printing. not enough