LED UV cold light source full-gravure solvent-free printing technological method

Abstract

The invention discloses an LED UV cold light source full-gravure solvent-free printing technological method. The method includes the following steps that first, a printed material is conveyed forwards; second, the printed material is conveyed to a multi-color printing machine set which comprises a plurality of printing units, and each printing unit comprises a UV printing machine using UV ink for printing and an LED UV cold light source used for drying the printed material. The printed material is conveyed into the position between a gravure printing rubber roller and a gravure printing plate roller of the corresponding UV printing machine, a UV ink supply device supplies ink to the gravure printing plate roller, patterns on the gravure printing plate roller are transferred to the surface of the printed material in the rotating process of the gravure printing rubber roller and the gravure printing plate roller, and then the patterns on the surface of the printed material are cured by the corresponding LED UV cold light source; third, the printed material continues to be conveyed to the next printing unit, and another color is printed; fourth, the third step is repeated according to the category number of needed colors; fifth, the printed material subjected to the fourth step is cut into finished products.

Description

【Technical field】 [0001] The invention relates to a gravure printing process, more specifically a full gravure solvent-free printing process of LED UV cold light source. 【Background technique】 [0002] At present, the gravure printing method is one of the commonly used printing methods, but the current gravure printing process has the following deficiencies: 1. The curing light source of traditional gravure printing generally adopts a mercury lamp, and the substrate is transferred to the gravure printing plate roller. The heat generated during the drying process after the pattern is large, not energy-saving, not environmentally friendly, and the cost is high. Moreover, due to the large heat radiation, it is easy to cause wrinkles on the substrate and affect the quality of the product; 2. Traditional gravure printing can only print a single 3. Traditional gravure printing cannot realize the printing of small characters. [0003] Therefore, the present invention just produces...

AI Technical Summary

Problems solved by technology

[0002] At present, the gravure printing method is one of the commonly used printing methods, but the current gravure printing process has the following deficiencies: 1. The curing light source of traditional gravure printing generally adopts a mercury lamp, and the substrate is transferred to the gravure printing plate roller. The heat generated during the drying process after the pattern is large, not energy-saving, not environmentally friendly, and the cost is high. Moreover, due to the large heat radiation, it is easy to cause wrinkles on the substrate and affect the quality of the product; 2. Traditional gravure printing can only print a single 3. Traditional gravure printing cannot realize the printing of small characters

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