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Coating paint for ink-jetting CTP (cytidine triphosphate) plate, printing plate base and preparation method thereof

A coating and coating technology, applied in the direction of coating, printing plate, printing, etc., can solve the problems affecting the final effect of printed products, insufficient hydrophilicity, adsorption and wear resistance, etc. The effect of adsorption force and high imaging accuracy

Active Publication Date: 2011-10-19
陈凯
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] However, the quality of inkjet CTP plates directly affects the final effect of printed products. Existing inkjet CTP plates generally have shortcomings in terms of hydrophilicity, adsorption and wear resistance.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] Under stirring, add 20g methyl orthosilicate (hydrolysis degree 50%) and 100g silica (average particle size 5μm) to 100g polyester acid vinyl ester (hydrolysis degree 75%) aqueous solution (concentration 10%). Aqueous solution (concentration 10%), 8g polyquaternium 3 aqueous solution (concentration 10%), 5g Triton X-100 aqueous solution (concentration 10%). After mixing uniformly, the coating is prepared.

[0027] The aluminum plate base with a thickness of 0.3mm is cleaned with a 30% phosphoric acid aqueous solution, and then washed and dried with water, and then coated with the above-mentioned coating paint to prepare an inkjet CTP with a dense network structure coating paint with a large number of micropores Plate.

Embodiment 2

[0029] Under stirring, add 200g of ethyl orthosilicate (hydrolysis degree 20%) and 120g alumina (average particle size 2μm) aqueous solution to 100g polyester acid vinyl ester (hydrolysis degree 85%) aqueous solution (concentration 10%). (Concentration 10%), 6g Polyquaternium 3 aqueous solution (concentration 10%), 10g Triton X-100 aqueous solution (concentration 10%). After mixing uniformly, the coating is prepared.

[0030] The aluminum plate base with a thickness of 0.3mm is cleaned with acetone cleaning solution, and then washed and dried with water, and then coated with the above-mentioned coating paint to prepare an inkjet CTP plate with a large number of microporous dense network structure coating paint material.

Embodiment 3

[0032] Under stirring, add 800g methyl orthosilicate (hydrolysis degree 20%) and 150g silica (average particle size 0.5μm) to 100g polyester acid vinyl ester (hydrolysis degree 98%) aqueous solution (concentration 10%). ) Aqueous solution (concentration 10%), 1g polyquaternium 3 aqueous solution (concentration 10%), 20g Triton X-100 aqueous solution (concentration 10%). After mixing uniformly, the coating is prepared.

[0033] After coating the surface of a polyethylene terephthalate substrate with a thickness of 0.175mm with a hydrophilic primer, vinylidene chloride-methyl acrylate-methyl succinic acid terpolymer, the above Coating paint to prepare inkjet CTP plate material with a large number of microporous dense network structure coating paint.

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PUM

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Abstract

The invention discloses a coating paint for an ink-jetting CTP (cytidine triphosphate) plate, a printing plate base and a preparation method thereof. The coating paint for ink-jetting a CTP plate is prepared by mixing orthosilicic acid tetraalkyl ester, polyvinyl acetate and inorganic oxide particles, and the weight of the orthosilicic acid tetraalkyl ester is 0.2-50 times that of the polyvinyl acetate. The paint containing the polyvinyl acetate, the orthosilicic acid tetraalkyl ester and the inorganic oxide particles is coated on the surface of the printing plate base, crosslinking reaction is completely carried out on the paint in the drying process to form a dense net structure with a great amount of micropores, so that the dried coating has hydrophily, high adsorption performance and high abrasion performance, so as to prepare the ink-jetting CTP plate with high imaging precision, high printability and high pressrun. The offset plate is imaged by printing of an ink-jet printer, and the imaged plate can be printed on the machine through proper baking.

Description

Technical field [0001] The invention belongs to the field of offset printing plates, and specifically relates to a coating paint, a plate base and a preparation method for inkjet CTP plates. Background technique [0002] As a plate making process, inkjet CTP began to appear in the 1970s. In 1978, the German HOECHST company used inkjet equipment on the roughened and anodized aluminum-based bare plate, and then heated and cured the ink layer. , And carry out a technical route to the blank part of the printing plate. It ink-jet prints the resin-based ink dispersed in water onto the ordinary PS plate, and then completes the production of the printing plate through printing and development. Due to the low resolution of printers during this period, inkjet CTP has not been applied in production. With the improvement of inkjet printer resolution and the expansion of printing format, after nearly 20 years of slow technological development, inkjet CTP has begun large-scale technical resea...

Claims

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Application Information

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IPC IPC(8): C09D131/04C09D7/12C09D1/00B41J2/01B41N1/00
Inventor 陈凯
Owner 陈凯
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