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A kind of photosensitive non-grit mesh printing plate and its preparation method and application

A non-gritty, photosensitive technology, which is applied in the printing plate preparation and printing fields, can solve the problems of environmental pollution and plate cost increase, and achieve the effects of environmental protection, power saving and simple preparation process

Inactive Publication Date: 2018-11-27
BEIJING ZHONGKE NANO THINK PRINT TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

A large amount of acid and alkali must be used to pretreat the aluminum plate during anodic oxidation, and the waste liquid of acid and alkali not only easily causes great pollution to the environment, but also increases the overall cost of the plate

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0032] Evenly spray zinc oxide with a particle size of 3000nm on the aluminum plate, and then coat a layer of photosensitive liquid on it by spin coating method, and dry it to obtain a photosensitive non-gritty printing plate.

[0033] Described photosensitive liquid is by 2-diazo-1-naphthol-4-sulfonyl chloride and the product 8g that BTB225 phenolic resin reacts and obtains (2-diazo-1-naphthol-4-sulfonyl chloride and the hydroxyl The molar ratio of functional groups is 1:1), 0.5g of oil-soluble blue, 20g of epoxy resin, 35g of ethylene glycol monomethyl ether, and 35g of ethylene glycol monoethyl ether.

Embodiment 2

[0035] Evenly spray cerium oxide with a particle size of 200nm on an aluminum plate, and then coat a layer of photosensitive liquid on it by spin coating, and dry it to obtain a photosensitive non-gritty printing plate.

[0036]Described photosensitive liquid is obtained by the product 8g that 2-diazo-1-naphthol-4-sulfonyl chloride and butanol react (the mol ratio of 2-diazo-1-naphthol-4-sulfonyl chloride and butanol is 1:20), 0.5g of oil-soluble blue, 20g of epoxy resin, 35g of methyl ethyl ketone, and 35g of dioxane.

Embodiment 3

[0038] Evenly disperse alumina with a particle size of 3000nm in phenolic resin, and then coat it on a copper plate. The mass ratio of alumina and phenolic resin is 1:10; finally, coat a layer of photosensitive liquid on it by spin coating, and dry it. , That is, a photosensitive non-gritty printing plate.

[0039] The photosensitive liquid is 10g (2-diazo-1-naphthol-4 - The molar ratio of sulfonyl chloride and the hydroxyl functional group of poly(p-hydroxystyrene) is 1:5), 0.4g of Victoria pure blue, 15g of polyvinyl formal resin, and 80g of solvent dioxane.

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Abstract

A photosensitive grain-free printing plate, consisting of a plate base, a hydrophilic layer and a photosensitive layer, with the hydrophilic layer and the photosensitive layer being successively coated on the plate base. A hydrophilic coating is obtained by coating a composition of nano-scale and / or micron-scale particles or a composition containing nano-scale and / or micron-scale particles on the surface of the plate base. The hydrophilic coating thus obtained has an appropriate roughness, which imparts to the surface of the plate base hydrophilic and water-retaining properties. The presence of hydrophilic particles in nano scale and / or micron scale in the hydrophilic layer does not only ensure that the printing plate meets the requirements of ink absorption but also improves the abrasive resistance of the plate base surface, and furthermore maintains good cohesive forces between the hydrophilic layer and the printing base and between the hydrophilic layer and the photosensitive layer. In comparison with the existing photosensitive plates, the contamination caused by the waste acid and waste base liquids produced by electrolysis and oxidation of aluminium plates is avoided and the water and electricity consumption is reduced.

Description

technical field [0001] The invention belongs to the technical field of printing plate preparation, and in particular relates to a photosensitive non-gritty printing plate and a preparation method thereof, which are applied in the printing field. Background technique [0002] With the wide application of computer technology in the printing industry, CTP technology has gradually gained the attention of printing companies. For CTP technology, the quality and application of CTP plates are the key to ensure the quality of plate making. After more than ten years of development, CTP technology has gradually formed three categories: thermal CTP plates, silver salt CTP plates and photosensitive CTP plates. The production process of the photosensitive plate is: plate base cleaning - degreasing - cleaning - electrolytic sand mesh - washing - ash removal - washing - oxidation - washing - sealing - washing - drying - coating solution - drying - cutting - packaging . The main features ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B41N3/03G03F7/004
CPCG03F7/11G03F7/022G03F7/0233G03F7/038
Inventor 宋延林杨明沙栩正刘云霞吴为王坤婵
Owner BEIJING ZHONGKE NANO THINK PRINT TECH
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