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Protective liquid for CTP plate baking and printing use method of CTP plate

A technology for protecting liquid and plates, applied in the field of printing plate production, can solve the problems of reduced printing suitability of plates, changes in physical and chemical properties of blank parts, and frequent smearing, etc., and achieves the effect of improving printing durability.

Inactive Publication Date: 2021-11-30
HUANGSHAN YINJIANG TECH +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the existing protective liquids have limited protective effect on the baked plate. The dots in the graphics and text part have a large deformation rate when baked at high temperature, and the physical and chemical properties of the blank part will also change, resulting in a decrease in the printing suitability of the plate. Dirty phenomenon is more frequent in the process

Method used

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  • Protective liquid for CTP plate baking and printing use method of CTP plate
  • Protective liquid for CTP plate baking and printing use method of CTP plate

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0022] Example 1: A protective solution for CTP plate baking, including the following raw materials in mass fractions: ammonium pentaborate 1.0-5.0%, ammonium tetraborate 0.5-2.0%, TX-100.3-0.5%, NP-100.2-0.5 %, 0.5-1.2% of alkyl diphenyl ether disulfonate, and the balance is water; wherein, TX-10+NP-10: alkyl diphenyl ether disulfonate=1:1.0-1.2.

[0023] Its preparation method comprises the following steps:

[0024] (1) add borate, anionic surfactant and nonionic surfactant to water successively, all carry out stirring and dissolving after adding each time, make it mix evenly;

[0025] (2) Filter and remove slag from the above solution with a 10um filter element to obtain a colorless and transparent protective solution;

[0026] Its use method includes the following steps:

[0027] (1) Take the CTP plate after the development process (produced by Jinruitai Technology Co., Ltd., JRT200-8 positive thermal CTP plate), scrape off the excess water on the plate, and then evenly ...

Embodiment 2

[0030] Embodiment 2: A protective solution for CTP plate baking, including the following raw materials in mass fractions: sodium tetraborate 1.0-3.0%, ammonium pentaborate 1.0-3.0%, NP-100.5-1.0%, fatty alcohol polyoxyethylene Ether sulfosuccinic acid half ester disodium salt 0.3-0.6%, alkyl ether sulfosuccinic acid sodium 0.3-0.6%, the balance is water; among them, NP-10: fatty alcohol polyoxyethylene ether sulfosuccinic acid half Ester disodium salt + sodium alkyl ether sulfosuccinate = 1: 1.0 ~ 1.2.

Embodiment 3

[0031] Example 3: A protective solution for CTP plate baking, including the following raw materials in mass fractions: ammonium tetraborate 2.0-5.0%, ammonium fluoroborate 1.0-2.0%, NP-100.3-0.5%, AEO-90.2-0.5 %, alkyl diphenyl ether disulfonate 0.3-0.6%, sodium dodecylbenzene sulfonate 0.3-0.6%, and the balance is water; among them, NP-10+AEO-9: alkyl diphenyl ether disulfonate Sulfonate+sodium dodecylbenzenesulfonate=1:1.0~1.2.

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Abstract

The invention belongs to the technical field of printing plate production, and particularly relates to protective liquid for CTP plate baking and a printing use method of a CTP plate. The protective liquid for CTP plate baking comprises the following raw materials of, by mass, 1.0-7.0% of borate, 0.5-1.0% of a nonionic surfactant, 0.5-1.2% of an anionic surfactant and the balance water. The borate is selected from at least two of ammonium pentaborate, sodium tetraborate, ammonium tetraborate and ammonium fluoborate; the nonionic surfactant is selected from at least one of alkylphenol ethoxylates and fatty alcohol-polyoxyethylene ether; and the anionic surfactant is selected from at least one of alkyl diphenyl ether disulfonate, fatty alcohol-polyoxyethylene ether sulfosuccinic acid half ester disodium salt and alkyl ether sodium sulfosuccinate. According to the protective liquid for CTP plate baking, the printing durability of the plate can be improved, and the plate surface is not dirty.

Description

[0001] This application is a divisional application for an invention patent with an application date of May 26, 2017, an application number of 201710383836.9, and an invention title of "Protective Liquid for CTP Plate Baking". technical field [0002] The invention belongs to the technical field of printing plate production, and in particular relates to a protective liquid for baking a CTP plate and a method for printing and using a CTP plate. Background technique [0003] The surface of the CTP plate includes the lipophilic graphic part and the hydrophilic blank part, and the purpose of printing can be realized because of the characteristics of the region's lipophilicity and hydrophilicity. The graphics and text of ordinary CTP plates are easily dissolved by UV-curable inks, and printing cannot be completed, so it needs to be baked. Plate baking in the printing industry refers to the operation of baking the developed plate at high temperature to improve the printing number ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B41N3/08
CPCB41N3/08
Inventor 李煜翁宏飏
Owner HUANGSHAN YINJIANG TECH