Grain-free metal printing plate base and preparation method thereof

A non-gritty, metal-free technology, applied in printing, printing plates, printing processes, etc., can solve the problems of insufficient water retention capacity of the coating, loss of use effect, easy to get dirty coating, etc., to achieve good hydrophilicity and water retention performance, Improve printing durability and good adhesion

Active Publication Date: 2017-02-01
CHINA LUCKY FILM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Due to its high resin ratio, the water retention capacity of the coating is insufficient, and the coating is easy to get dirty during the printing process and loses its use effect

Method used

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  • Grain-free metal printing plate base and preparation method thereof
  • Grain-free metal printing plate base and preparation method thereof

Examples

Experimental program
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Effect test

preparation example Construction

[0057] The preparation of a non-gritty metal printing plate base consists of four main steps:

[0058] (1) Metal plate pretreatment: use 1%-20% lye to degrease, wash and dry;

[0059] (2) Mix the bonding layer composition evenly to prepare a bonding layer coating solution; apply the bonding layer coating solution on the metal plate, and then dry it in an oven at 50°C-200°C for 3min-30min to obtain Metal plate with bonding layer;

[0060] (3) Mix the hydrophilic layer composition evenly to prepare a hydrophilic layer coating solution; apply the hydrophilic layer coating solution on the metal plate containing the bonding layer, and then heat it in an oven at 50°C-200°C Dry at ℃ for 3min-30min to obtain a metal printing plate base;

[0061] (4) Solvent-assisted sealing: put NaH 2 PO 4 According to the proportion of 65g / L~85g / L, NaF is dissolved in water according to the proportion of 550mg / L~750mg / L to make working solution and heated to 40℃~50℃, and the metal printing plate ...

Embodiment 1

[0066] Preparation of adhesive layer coating solution: 60g (30%) polyacrylate aqueous solution, 6g (30%) silica sol, 10g aziridine crosslinking agent, 8g ethylene glycol tert-butyl ether, 0.8g fluid The leveling agent and 15.2 g of deionized water were mixed evenly at room temperature.

[0067] Preparation of metal plate with bonding layer: Degrease the ungrained aluminum plate with 5% sodium hydroxide solution, wash it with clean water and dry it, and apply the bonding layer by spin coating The solution was coated on an aluminum plate and dried at 150° C. for 10 minutes.

[0068] The coating solution preparation of the hydrophilic layer: 10g (30%) polyacrylate aqueous solution, 1g aziridine crosslinking agent, 10g (5%) polyvinyl alcohol, 0.05g ethylene glycol tert-butyl ether, 0.03g The leveling agent, 0.05g defoamer, 34g alumina particles with an average particle size of 1000nm, 1g20nm silica sol and 43.87g deionized water were mixed uniformly at room temperature.

[0069]...

Embodiment 2

[0073] Preparation of adhesive layer coating solution: 40g (50%) polyurethane aqueous solution, 3g (30%) silica sol, 1g toluene diisocyanate, 0.5g leveling agent and 55.5g deionized water were mixed uniformly at room temperature.

[0074] Preparation of metal plate with bonding layer: Degrease the ungrained aluminum plate with 5% sodium hydroxide solution, wash it with clean water and dry it, and apply the bonding layer by roller coating The solution was coated on an aluminum plate and dried at 120° C. for 20 minutes.

[0075] The coating liquid preparation of hydrophilic layer: 5g (50%) polyacrylate aqueous solution, the toluene diisocyanate of 0.5g, the gelatin of 10g (5%), the leveling agent of 0.03g, the average of 0.05g defoamer, 40g Alumina particles with a particle size of 800 nm and 44.42 g of deionized water were mixed uniformly at room temperature.

[0076] Preparation of the metal printing plate without grains: at room temperature, the coating solution of the hydro...

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Abstract

The invention discloses a grain-free metal printing plate base. The grain-free metal printing plate base comprises a metal plate material, an adhesive layer and a hydrophilic layer; the mass of inorganic particles accounts for 90% or more of that of the hydrophilic layer; the surface of the hydrophilic layer is subjected to hole sealing treatment by using a hole sealing material; the adhesive layer is formed by drying and curing after the metal plate material is coated with a coating liquid with great adhesive force to the metal plate material; the hydrophilic layer is formed by drying and curing after an inorganic nano or micro particle with a small amount of an adhesive is coated with a coating liquid. A preparation method for the grain-free metal printing plate base disclosed by the invention avoids the defects of high energy consumption and high pollution of the conventional grain plate base, can effectively reduce cost, and can be applied to the printing fields, such as a PS plate or a CTP plate.

Description

technical field [0001] The invention relates to the technical field of printing, in particular to a non-gritty metal printing plate base and its preparation technology. Background technique [0002] Offset printing has high printing efficiency, stable product performance, low cost and wide applicability, and occupies an important position in the printing field. The graphic and non-graphic parts of offset printing are printed using the principle of oil-water repellency. When printing, the printing ink can only cover and transfer on the graphic part, and cannot adhere to the blank part, so as to achieve the goal of printing graphic. the goal of. The printing plate is the carrier used to transfer the ink to the printed image on the substrate. At present, the commonly used printing plates such as PS plate and CTP plate are mainly made of aluminum plate base. In order to improve the printing resistance and resolution of the aluminum plate base, the aluminum plate is usually ano...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B41N1/04C09J133/04C09J11/04C09J11/06C09D133/04C09D7/12C09J175/04C09J163/00C09D163/00
CPCB41N1/04C08K3/36C08K5/3412C08K2201/011C09D133/04C09D163/00C09J11/04C09J11/06C09J133/04C09J163/00C09J175/04C08L29/04C08K13/02C08K2003/2227C08L89/00C08L39/06C08K5/17Y02P20/10
Inventor 唐志虎刘明芳梁立华赵义丽王泳赵伟建
Owner CHINA LUCKY FILM CORP
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