Long-pressrun photosensitiser for printing of blanket and towel

A technology of photosensitive liquid and towel, which is applied in the field of plate-making photosensitive materials, can solve the problems of long plate-making cycle and physical injury of plate-making workers, and achieve the effects of avoiding harm to workers and the environment, improving plate-making efficiency, and reducing plate-making processes

Active Publication Date: 2015-09-16
JIASHAN MINGXIAN NEW MATERIAL TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The plate-making cycle is long, and it is generally necessary to prepare the plate several days in advance, and the long-term use of the print-resistant paint, the organic solvent in the print-resistant paint will also cause great harm to the body of the plate-making workers

Method used

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  • Long-pressrun photosensitiser for printing of blanket and towel
  • Long-pressrun photosensitiser for printing of blanket and towel

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0039] The preparation of embodiment 1 modified polyvinyl alcohol aqueous solution

[0040] 12% mass percent polyvinyl alcohol (polymerization degree 1700, alcoholysis degree 88%) aqueous solution, adjust the pH value to 2 with HCl, add 1.4% molar ratio of 1-methyl-4-formylphenylpyridinium methyl Sulfate, react at 80°C for 4-5 hours, then neutralize with alkene-added NaOH aqueous solution, adjust the pH value to 6-7, and obtain the preparation of modified polyvinyl alcohol aqueous solution.

Embodiment 2

[0041] The preparation of embodiment 2 modified polyvinyl alcohol aqueous solution

[0042] 10% mass percent polyvinyl alcohol (polymerization degree 1700, alcoholysis degree 88%) aqueous solution, adjust the pH value to 1.5 with HCl, add 1-methyl-4-formylphenylpyridinium methyl in 1% molar ratio Sulfate, react at 80°C for 4-5 hours, then neutralize with alkene-added NaOH aqueous solution, adjust the pH value to 6-7, and obtain the preparation of modified polyvinyl alcohol aqueous solution.

Embodiment 3

[0043] The preparation of embodiment 3 modified polyvinyl alcohol aqueous solution

[0044] 12% mass percent polyvinyl alcohol (polymerization degree 1700, alcoholysis degree 88%) aqueous solution, adjust the pH value to 2.5 with HCl, add 2% molar ratio of 1-methyl-4-formylphenylpyridinium methyl Sulfate, react at 75-85°C for 4-5 hours, then neutralize with alkene-added NaOH aqueous solution, adjust the pH value to 6-7, and obtain the preparation of modified polyvinyl alcohol aqueous solution.

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Abstract

The invention brings forward a long-pressrun photosensitiser for printing of blanket and towel. The long-pressrun photosensitiser is prepared by mainly using a modified polyvinylalcohol aqueous solution, modified vinyl acetate, acrylate, an organosilicone monomer copolymer emulsion and modified photosensitive urethane acrylate. The photosensitiser provided by the invention has good long-pressrun performance. Without a long-pressrun paint, pressrun number can meet actual use requirements, platemaking process is minimized, and platemaking efficiency is raised. During production, use of the long-pressrun paint is reduced, and the damage of an organic solvent in the long-pressrun paint to workers and the environment is avoided.

Description

technical field [0001] The invention relates to the field of plate-making photosensitive materials, in particular to a print-resistant photosensitive liquid for blanket towel printing. Background technique [0002] In the existing magnetic bar printing process such as blankets and towels, due to the low mesh number of the screen used and the high pressure of the magnetic bar machine printing, the screen plate is severely worn, so the screen plate made of general photosensitive emulsion is not used. In the case of printing paint protection, the screen printing life is less than a thousand times, which cannot meet the actual use needs. The existing common process is to use a general photosensitive emulsion to make the pattern and then apply a layer of solvent-based print-resistant paint for protection. Since the print-resistant paint is non-photosensitive, it is necessary to use a paint suction machine to make the pattern Part of the print-resistant paint is sucked off to avo...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): D06P1/52D06P1/651G03F7/027G03F7/004C08F16/06C08F8/30C08F218/08C08F220/18C08F230/08C08G18/67
Inventor 陈峰
Owner JIASHAN MINGXIAN NEW MATERIAL TECH
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