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High-resolution water-based flexographic ink and preparation method thereof

A high-resolution ink technology, applied in the high-resolution water-based flexographic ink and its preparation field, can solve the problems that cannot reflect the three-dimensional effect, complex graphics are difficult to clearly express, etc. thin effect

Active Publication Date: 2015-08-12
CHONGQING HONGYUAN PRINTING INK
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The pigment content in the current water-based ink is only 10-15%, which mainly embodies fonts and graphics in the form of lines, and it is difficult to clearly express complex graphics, nor can it reflect a three-dimensional effect

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0022] (1) Add 20 parts of water-based acrylic resin, 30 parts of pigment, 2 parts of dispersant 760W produced by Dow Corning, 20 parts of water, 10 parts of ethanol and 1 part of defoamer into a high-speed mixer for pre-dispersion, and the stirring speed is controlled by a frequency conversion motor , Stir slowly first to avoid the slurry from spilling out, then stir at a high speed of 1000-2000 rpm to make the mixture even;

[0023] (2) Put the pre-dispersed slurry into the sand mill for sanding; the particle size of the sanded slurry is less than 10um.

[0024] (3) Add acrylic emulsion to the slurry after sanding, in which the mass of acrylic emulsion accounts for 20%, and the mass of slurry accounts for 70%. Stir and mix evenly, and add solvent at the same time so that the viscosity of the ink is Tu 4 Viscosity Cup 20 -30s, the solvent is water and ethanol, and the volume ratio of water and ethanol is 2:1. The prepared ink has excellent pigment dispersibility and good sta...

Embodiment 2

[0026] (1) Add 30 parts of water-based acrylic resin, 60 parts of pigment, 8 parts of dispersant 760W produced by Dow Corning, 15 parts of water, 10 parts of ethanol and 0.5 part of defoamer into a high-speed mixer for pre-dispersion, and the stirring speed is controlled by a frequency conversion motor , Stir slowly first to avoid the slurry from spilling out, then stir at a high speed of 1000-2000 rpm to make the mixture even;

[0027] (2) Put the pre-dispersed slurry into the sand mill for sanding; the particle size of the sanded slurry is less than 10um.

[0028] (3) Add acrylic emulsion to the slurry after sanding, wherein the amount of acrylic emulsion is 30%, the amount of slurry is 60%, stir and mix evenly, and add solvent at the same time so that the viscosity of the ink is Tu 4 viscosity cup 20 -30s, the solvent is water and ethanol, and the volume ratio of water and ethanol is 1:1. The prepared ink has excellent pigment dispersibility and good stability, and the ink...

Embodiment 3

[0030] (1) Add 25 parts of water-based acrylic resin, 50 parts of pigment, 6 parts of Digo dispersant 760W, 20 parts of water, 15 parts of ethanol and 0.5 part of defoamer into a high-speed mixer for pre-dispersion. The stirring speed is controlled by a frequency conversion motor. Stir slowly to prevent the slurry from spilling, then stir at a high speed of 1000-2000 rpm to make the mixture even;

[0031] (2) Put the pre-dispersed slurry into the sand mill for sanding; the particle size of the sanded slurry is less than 10um.

[0032] (3) Add acrylic emulsion to the slurry after sanding, wherein the amount of acrylic emulsion is 30%, the amount of slurry is 60%, stir and mix evenly, and add solvent at the same time so that the viscosity of the ink is Tu 4 viscosity cup 20 -30s, the solvent is water and ethanol, and the volume ratio of water and ethanol is 2:1. The prepared ink has excellent pigment dispersibility and good stability, and the ink does not thicken or unite after...

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Abstract

The invention discloses a high-resolution water-based flexible printing ink comprising ink paste and acrylic emulsion. The ink is characterized in that the ink paste comprises the following components in parts by weight: 20 to 30 parts of water-based acrylic resin, 30 to 60 parts of pigment, 2 to 8 parts of dispersant 760W, 10 to 20 parts of water, 10 to 15 parts of ethanol, and 0.5 to 1 part of defoaming agent. The invention further discloses a preparation method for the ink. The quantity of the pigment is increased in the ink paste of the ink disclosed by the invention, and meanwhile, the dispersant 760W is adopted, so that a large dose of pigment can be well dispersed, and the ink has good stability and good dyeing property. The ink can reach more than 100 resolution cables and can be used for directly printing line boards, and the inking effect is similar to an offset printing effect. The third dimension of printed pictures can be reflected, and the pictures are exquisite and vivid. Moreover, the ink disclosed by the invention is water-based ink, so the ink accords with the national environmental protection policy, and can achieve the printing effect of an oil-based ink.

Description

technical field [0001] The invention belongs to the field of inks, and in particular relates to a high-resolution water-based flexographic ink and a preparation method thereof. Background technique [0002] Flexography, also often referred to as flexographic printing, is a printing method that uses a flexographic plate and transfers ink through an anilox roller. For flexographic printing, the printing plate generally adopts a photosensitive resin plate with a thickness of 1-5mm. Inks are divided into three categories, namely water-based inks, alcohol-soluble inks, and UV inks. Because the ink used in flexographic printing is environmentally friendly, it has been widely used in food packaging printing and has a bright future. Flexographic printing is a type of letterpress printing. [0003] The traditional printing ink is oil-based ink. In order to protect the environment, in recent years, the market has been developed to use environmentally friendly water-based ink. Howe...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C09D11/037C09D11/107
Inventor 全建国
Owner CHONGQING HONGYUAN PRINTING INK
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