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Gravure water-based ink and preparation method thereof

A water-based ink and modified technology, which is applied in the printing field, can solve the problems that water-based ink cannot meet the requirements of gloss and color rendering effect, and difficult to grind.

Active Publication Date: 2013-09-18
HUNAN FURUI PRINTING CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, for water-based gravure printing inks, when using a three-roller grinder to grind the ink, the ink does not stick to the roller and flows down, causing difficulty in grinding; color effect requirements

Method used

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Examples

Experimental program
Comparison scheme
Effect test

preparation example Construction

[0065] The present invention provides a kind of preparation method of gravure water-based ink described in above-mentioned technical scheme, comprises the following steps:

[0066] mixing and stirring the pigment, wetting and dispersing agent, pH regulator, defoamer and water, and then grinding in a three-roll mill to obtain a ground color paste;

[0067] The ground color paste is mixed with modified acrylic resin emulsion, polyethylene wax, defoamer and diluent to obtain gravure water-based ink.

[0068] In the invention, the pigment, the wetting and dispersing agent, the pH regulator, the defoaming agent and water are mixed and stirred, and then ground in a three-roll grinder to obtain the ground color paste. In the present invention, the type and mass ratio of the pigment, wetting and dispersing agent, pH regulator, defoamer and water are the same as those of the pigment, wetting and dispersing agent, pH regulator, defoaming agent described in the above technical scheme. T...

Embodiment 1

[0083]Add 12kg of red material, 36kg of yellow material, 36.5kg of wetting and dispersing agent, 5kg of monoethanolamine, 1.5kg of defoamer and 9kg of water into a high-low speed double-roller mixer and stir at a slow speed for four hours to fully wet the coloring material , to obtain the mixed material of color paste;

[0084] Add the mixed material of the color paste to a hydraulic three-roller machine for grinding, wherein the roller pressure is 2MPa, the scraper pressure is 1MPa, and the temperature of the cooling water is 10°C. During the grinding process, there is good contact between the material and the rollers. Excellent adhesion performance, the material will not flow down from the roller, the grinding process is smooth, and the ground color paste is obtained;

[0085] Mix 50kg modified acrylic resin emulsion, 24kg milled color paste, 6kg polyethylene wax, 2kg defoamer and 18kg diluent in a high-speed emulsifier, and the diluent is ethanol and water with a volume rat...

Embodiment 2

[0089] Add 10kg of red material, 38kg of yellow material, 38kg of wetting and dispersing agent, 3kg of monoethanolamine, 1kg of defoamer and 10kg of water into a high-low speed double-roller mixer and stir at a slow speed for four hours to fully wet the coloring material, and obtain Mixture of colorants;

[0090] Add the mixed material of the color paste to a hydraulic three-roller for grinding, wherein the roller pressure is 2MPa, the scraper pressure is 1MPa, and the temperature of the cooling water is 15°C. During the grinding process, there is good contact between the material and the roller. Excellent adhesion performance, the material will not flow down from the roller, the grinding process is smooth, and the ground color paste is obtained;

[0091] 45kg modified acrylic resin emulsion, 30kg ground color paste, 5kg polyethylene wax, 1kg defoamer and 19kg diluent are mixed in a high-speed emulsifier, and the diluent is ethanol and water with a volume ratio of 1:1 , emuls...

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Abstract

The invention provides gravure water-based ink which comprises the following ingredients: 40-60wt% of modified acrylic resin emulsion, 15-35wt% of color paste, 3-15wt% of polyethylene wax, 1-5wt% of an antifoaming agent and 10-30wt% of a diluent, wherein the color paste comprises the following ingredients: 35-60wt% of dye, 30-45wt% of a wetting dispersant, 1-10wt% of a pH value modifier, 0.5-5wt% of a antifoaming agent and 5-15wt% of water. When the gravure water-based ink provided by the invention is grinded, materials have good viscidity with rollers, the gravure water-based ink is uniform in particle size and good in color can be prepared, and good color generation effect is achieved.

Description

technical field [0001] The invention relates to the technical field of printing, in particular to a gravure water-based ink and a preparation method thereof. Background technique [0002] Gravure printing, referred to as gravure printing, is one of the four printing methods. Gravure printing is a direct printing method in which the ink contained in the recesses of the gravure is pressed directly onto the substrate. The printing plate of gravure printing is composed of pits corresponding to the original graphics and the surface of the printing plate. When printing, the ink is filled into the pits, the ink on the surface of the printing plate is scraped off with a squeegee, the printing plate is in contact with the substrate with a certain pressure, and the ink in the pits is transferred to the substrate to complete the printing. [0003] The traditional gravure ink production process is to use a sand mill to grind the ink. The principle is to use the high-speed rotating bla...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09D11/10
Inventor 肖刚
Owner HUNAN FURUI PRINTING CO LTD
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