Method for etching gravure printing roller by spraying copper chloride

A gravure printing plate roller and spray etching technology, which is applied in the production technology field of laser engraved gravure printing plate roller production, can solve the problems of environmental pollution, difficult regeneration, poor etching effect, etc., so as to reduce pollution and improve quality. Effect

Inactive Publication Date: 2009-07-08
长沙精达印刷制版有限公司
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  • Abstract
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AI Technical Summary

Problems solved by technology

[0003] In order to solve the problems of serious environmental pollution, poor etching effect, and difficulty in regeneration caused by ferric chloride etching of gravure plate rollers in laser engraving, the present invention provides a method for etching gravure plate rolls by copper chloride spraying, This method not only has good etching effect, but also facilitates the regeneration of etching solution, and has less pollution to the environment.

Method used

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Examples

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Embodiment Construction

[0011] Put the plate roller after laser engraving on the top of the copper chloride etching machine. The etching solution contains 150-200 g / l of copper chloride dihydrate, 25-50 ml / l of hydrochloric acid, and the temperature is controlled at 25- 35°C, under moderate hydraulic pressure, the etchant first passes through the circulation system to flush and clean the plate roller evenly. After thorough cleaning, the plate roll is etched, and the plate roll is rotated at a constant speed, and then multiple nozzles are evenly sprayed with copper chloride for etching When the solution reaches the plate, copper chloride and copper undergo an etching reaction (1) to form cuprous chloride, which is insoluble in water, and cuprous chloride undergoes a complex reaction with excess hydrochloric acid in the etching solution (2) to form a soluble Complex ion. Through repeated chemical reactions, the laser engraving plate roller is etched in the place where the black glue pattern is ablated ...

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Abstract

The invention provides a method for spray etching intaglio roller using copper chloride. In a special etching machine, the copper chloride etching solution contains copper chloride dihydrate 150-200 g / L and hydrochloric acid 25-50 ml / L. A plurality of nozzles sprays copper chloride etching solution to a laser scribing back edition roller through a circulatory system for occurring etching reaction under certain temperature and pressure, one-valence copper complex reacts with chloridion, thus, intaglio roller pattern part etching is realized, and non-pattern part is protected by corrosion resistance special black glue. Oxyful and hydrochloric acid are automatic added with ratio 1:2-1:3 up to a point, one valence copper occurs rebirth reaction with hydrochloric acid and oxyful for realizing copper chloride rebirth, in a reasonable period of etching time, finally the laser scribing intaglio roller. Cu+CuCl2-Cu2Cl2.

Description

Technical field [0001] The invention relates to a method for spraying and etching a gravure printing plate roll with copper chloride, which is suitable for the production technology of laser engraved film gravure printing plate roll. Background technique [0002] At present, ferric chloride is used for etching in the production of laser engraved gravure plate roll, which is realized through the oxidation-reduction reaction of ferric chloride and copper. However, it has defects: many sediments, difficult waste liquid treatment, serious environmental pollution; prone to uneven corrosion; difficult to regenerate etching solution. Contents of the invention [0003] In order to solve the problems of serious environmental pollution, poor etching effect, and difficulty in regeneration caused by ferric chloride etching of gravure plate rollers in laser engraving, the present invention provides a method for etching gravure plate rolls by copper chloride spraying, The method not on...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C23F1/02C23F1/16B41C1/02
Inventor 谌伦祥黄东王晓斌
Owner 长沙精达印刷制版有限公司
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