UV-ink-resistant CTP plate imaging coating, UV-ink-resistant CTP plate and preparation method of UV-ink-resistant CTP plate

A technology of ink and imaging, applied in coating, printing surface preparation, printing plate, etc., can solve the problems of complicated process and high cost, and achieve the effects of simplifying process, improving service life and reducing cost

Pending Publication Date: 2021-07-16
上海宝士嘉印刷器材有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] In view of the above-mentioned related technologies, the inventor believes that when preparing a double-layer coated CTP plate, the bottom layer is first coated on the surface of the base plate, and after the bottom layer is formed and dried, the surface layer is then coated to form a double-layer coating, which has complicated processes and costs. high disadvantage

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0039] A UV-resistant ink CTP plate material is prepared by the following steps:

[0040] S1. Clean the surface of the aluminum base plate with a phosphoric acid cleaning solution and dry it;

[0041] S2. Coat the UV-resistant ink CTP plate imaging coating on the surface of the aluminum base plate. After drying, the solvent residue is controlled below 3%, and the coating weight is controlled at 1.5-1.6g / m 2 , to obtain UV-resistant ink CTP plates.

[0042] The above-mentioned UV-resistant ink CTP plate imaging coating is made of the following components: 1 kg of acrylamide-acrylate polymer, 0.6 kg of mixed phenolic resin, 0.2 kg of solubilizer, 0.3 kg of solubilizing resin, and 0.1 kg of solvent-resistant resin kg, infrared absorbing dye 0.1kg, dye 0.1kg.

[0043] Among them, the mixed phenol resin is a mixture of polymers condensed with m-cresol and formaldehyde, and polymers condensed with p-cresol and formaldehyde. The number average molecular weight of the mixed phenol r...

Embodiment 2

[0045] A UV-resistant ink CTP plate material, the difference from Example 1 is that the used UV-resistant ink CTP plate imaging coating is made of components comprising the following weight: acrylamide-acrylate polymer 3.5kg, mixed 3.5kg of phenolic resin, 0.7kg of solubilizer, 1.4kg of solubilizing resin, 0.05kg of solvent-resistant resin, 0.3kg of infrared absorbing dye, and 0.15kg of dye.

Embodiment 3

[0047] A UV-resistant ink CTP plate material, the difference from Example 1 is that the used UV-resistant ink CTP plate imaging coating is made of components comprising the following weight: acrylamide-acrylate polymer 6kg, mixed phenol 1kg of resin, 1.2kg of solubilizer, 2.5kg of solubilizing resin, 0.5kg of infrared absorbing dye, and 0.2kg of dye.

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Abstract

The invention relates to the technical field of printing plate material coatings, and particularly discloses a UV-ink-resistant CTP plate imaging coating, a UV-ink-resistant CTP plate and a preparation method of the UV-ink-resistant CTP plate. The UV ink-resistant CTP plate imaging coating is prepared from, by weight, 10-60 parts of acrylamide-acrylate polymer, 10-60 parts of mixed phenol resin, 2-12 parts of solubilizer, 3-25 parts of dissolution promoting resin, 0-1 part of dissolution resisting resin, 1-5 parts of infrared absorption dye and 1-2 parts of dye. The UV-ink-resistant CTP plate is made of an aluminum-based plate by taking the coating as the imaging coating. The preparation method of the UV-ink-resistant CTP plate comprises the following steps: S1, cleaning the surface of a plate base by adopting phosphoric acid or acetone cleaning liquid;, and drying and S2, coating of the imaging coating. The prepared coating can be coated in a single layer, the process is simplified, the yield is increased, and the cost is reduced.

Description

technical field [0001] The application relates to the technical field of printing plate coatings, more specifically, it relates to an imaging coating for a UV-resistant ink CTP plate, a UV-resistant ink CTP plate and a preparation method thereof. Background technique [0002] The thermal CTP plate is an offset printing plate that uses 830nm laser for imaging. Due to its convenient production, moderate cost, bright room operation, high imaging quality, and convenient use, it has already accumulated a considerable amount in the entire offset printing plate. Proportion. [0003] Ordinary heat-sensitive CTP plates can only be used for printing with ordinary offset printing inks. If applied to UV ink printing, its surface coating will be dissolved quickly under the action of UV ink, and its life will end after hundreds of printings. As UV ink printing is widely used in packaging printing, the demand for heat-sensitive CTP plates with UV-resistant inks is becoming more and more u...

Claims

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Application Information

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Patent Type & AuthorityApplications(China)
IPC IPC(8): G03F7/09G03F7/004C09D133/26C09D161/08C09D7/63C09D7/65B41N1/08B41N1/10B41N3/00
CPCG03F7/09G03F7/004C09D133/26C09D7/63C09D7/65B41N1/083B41N1/10B41N3/006C08L2205/025C08L2205/035C08L61/06C08K5/1539C08K5/09
Inventor范小芬
Owner上海宝士嘉印刷器材有限公司