Water-based coating liquid and preparation method and application thereof

A water-based coating liquid, selected from the technology, applied in the direction of coating, paper coating, special paper, etc., can solve the problems of spots, weak wetting function, non-drying, etc.

Inactive Publication Date: 2021-07-06
HAINAN BNK WATER BASED NEW MATERIAL CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] Gold and silver cardboard commonly used in the market is used in digital printing technology, and the following disadvantages will occur when it is directly printed with HP ElectroInk electronic ink: 1) Digital printing ink or ink cannot be dried in time, and there is a problem of dryness on the surface; 2 ) digital printing ink or ink on the surface of gold and silver cardboard, the wetting function is weak, resulting in local spots; Flow marks, which affect the appearance of the print

Method used

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  • Water-based coating liquid and preparation method and application thereof
  • Water-based coating liquid and preparation method and application thereof
  • Water-based coating liquid and preparation method and application thereof

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preparation example Construction

[0026] The application also provides a preparation method for an aqueous coating liquid, comprising the following steps:

[0027] According to the proportion, mix ethylene-acrylic acid copolymer, polyurethane resin and soft water, add crosslinking agent after heating, then add silicon dioxide, nanocellulose and dispersant, and obtain water-based coating liquid after standing still.

[0028] The solid content of the water-based coating liquid described in the present application is 10-20%, and the viscosity is 15-25s.

[0029] The present invention also provides a gold and silver cardboard, which is composed of a gold and silver cardboard base paper and an aqueous coating solution coated on the surface of the gold and silver cardboard base paper.

[0030] According to the present invention, specifically, an anilox roller is used to coat the aqueous coating solution on the surface of gold and silver cardboard, and the base paper of gold and silver cardboard is subjected to coron...

Embodiment 1

[0034] Mix 18 parts of ethylene-acrylic acid copolymer, 15 parts of polyurethane resin and 60 parts of soft water, start heating and stirring, stir at 100r / min, 70°C and add 5 parts of cross-linking agent at the same time, continue stirring for 5min, drop to room temperature, at room temperature Add 2 parts of silicon dioxide, 0.01 part of nanocellulose and 3 parts of dispersant in sequence, continue to stir for 20 minutes, let stand for 24 hours, add 0.5 parts of color fixing agent under stirring to obtain an aqueous coating solution, the solid content of the aqueous coating solution 10%, the viscosity is 18s, coated on gold and silver cardboard with 120 mesh anilox roller, the coating weight is 0.5g / m 2 , the sample was obtained after printing by HP Indigo, the printing appearance is good, the color is uniform, the adhesion reaches the level 1 of the standard GB / T5210-1985, and the color difference value △E is 0.42.

Embodiment 2

[0036] Mix 20 parts of ethylene-acrylic acid copolymer, 25 parts of polyurethane resin and 65 parts of soft water, start heating and stirring, stir at 100r / min, 70°C and add 10 parts of crosslinking agent at the same time, continue stirring for 5min, drop to room temperature, at room temperature Add 4 parts of silicon dioxide, 0.04 parts of nanocellulose and 5 parts of dispersant in sequence, continue to stir for 20 minutes, let stand for 24 hours, add 1 part of color fixing agent under stirring to obtain an aqueous coating solution, the solid content of the aqueous coating solution 20%, the viscosity is 23s, coated on gold and silver cardboard with 120 mesh anilox roller, the coating weight is 2g / m 2 , the sample was obtained after printing by HP Indigo, the printed appearance is full of color, the adhesion reaches the level 0 of the standard GB / T5210-1985, and the color difference value △E is 0.38.

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Abstract

The invention provides water-based coating liquid which is prepared from the following components in 100 parts by weight: 15 to 35 parts of ethylene-acrylic acid copolymer, 15 to 30 parts of polyurethane resin, 5 to 15 parts of cross-linking agent, 2 to 5 parts of silicon dioxide, 0.01 to 0.06 part of nano cellulose and 3 to 6 parts of dispersing agent. The invention further provides a preparation method and application of the water-based coating liquid. The technical innovation point of the invention lies in that nano cellulose is applied to disperse fumed silica, so that silica has a very good dispersion effect, finally, a printed image is full and bright in color and luster and good in color reducibility, and further, due to introduction of a cross-linking agent N-hydroxymethyl acrylamide, the cross-linking speed is increased, and the problem that the surface is dry and the interior is not dry when the ink is dried is solved.

Description

technical field [0001] The invention relates to the technical field of printing, in particular to an aqueous coating solution, a preparation method and application thereof. Background technique [0002] Gold and silver cardboard commonly used in the market is used in digital printing technology, and the following disadvantages will occur when it is directly printed with HP ElectroInk electronic ink: 1) Digital printing ink or ink cannot be dried in time, and there is a problem of dryness on the surface; 2 ) digital printing ink or ink on the surface of gold and silver cardboard, the wetting function is weak, resulting in local spots; Flow marks, which affect the appearance of printing. Contents of the invention [0003] The technical problem to be solved by the present invention is to provide a water-based coating solution for gold and silver cardboard. The water-based coating solution provided by the application is applied to the surface of gold and silver cardboard, so ...

Claims

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Application Information

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IPC IPC(8): C09D123/08C09D175/04C09D7/61C09D7/65D21H27/00D21H19/12
CPCC09D123/0869C09D175/04C09D7/61C09D7/65D21H27/00D21H19/12C08L2205/03
Inventor 朱清梅杨丽娟黄宏存陈招强
Owner HAINAN BNK WATER BASED NEW MATERIAL CO LTD
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