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Aqueous flexible plate printing ink and preparation thereof

A flexographic printing and ink technology, which is applied in the field of water-based flexographic printing ink and its preparation, can solve the problems of difficult to meet high-quality printing, printing roller corrosion, low color saturation, etc., and achieves easy decolorization and drying speed Fast, color-saturated effects

Inactive Publication Date: 2008-12-24
广东佳景科技股份有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] The existing water-based ink in the printing industry has dull color, rough ink quality, low color saturation, low wear resistance, easy to decolorize; relatively high viscosity, slow drying speed, difficult to clean, and has certain corrosion on the printing roller; not suitable High-speed printing of multi-color machines is difficult to meet high-quality printing

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment approach 1

[0019] According to the formula, the weight is 35% pigment, 30% acrylic resin, 0.2% defoamer, 3.8% ethylene glycol methyl ether, 1.8% wax slurry, 1.2% leveling agent, 28% water. Put the pigments in the mixer, and slowly add the acrylic resin while stirring at a low speed until the acrylic resin is completely dissolved; the dissolved mixture is ground in a sand mill so that the fineness of the color paste is less than or equal to 15 microns; the ground Put the color paste in the agitator at high speed, and neutralize until the pH value is 8.5-9.5; then add acrylic emulsion, defoamer, wax, leveling agent and water to the water-based color paste in sequence, Stir and mix evenly, adjust the viscosity with water to 40-80 seconds, and measure at 25°C with a domestic Tushi 4# cup.

[0020] The prepared ink is subjected to the following tests:

[0021] 1. Viscosity test

[0022] Instruments used: domestic Tushi 4# cup, electronic stopwatch, thermometer, ice water

[0023] Steps:

...

Embodiment approach 2

[0043] According to the formula, the weight is 33% pigment, 29% acrylic resin, 0.3% defoamer, 4.7% ethylene glycol methyl ether, 1.6% wax paste, 1.4% leveling agent, 30% water. Put the pigments in the mixer, and slowly add the acrylic resin while stirring at a low speed until the acrylic resin is completely dissolved; the dissolved mixture is ground in a sand mill so that the fineness of the color paste is less than or equal to 15 microns; the ground Put the color paste in the agitator at high speed, and neutralize until the pH value is 8.5-9.5; then add acrylic emulsion, defoamer, wax, leveling agent and water to the water-based color paste in sequence, Stir and mix evenly, adjust the viscosity with water to 40-80 seconds, and measure at 25°C with a domestic Tushi 4# cup.

[0044] The inspection method of each parameter is as described in Embodiment 1.

Embodiment approach 3

[0046] According to the formula, the weight is 32% pigment, 29% acrylic resin, 0.5% defoamer, 4.5% ethylene glycol methyl ether, 2.5% wax slurry, 1.5% leveling agent, 30% water. Put the pigments in the mixer, and slowly add the acrylic resin while stirring at a low speed until the acrylic resin is completely dissolved; the dissolved mixture is ground in a sand mill so that the fineness of the color paste is less than or equal to 15 microns; the ground Put the color paste in the agitator at high speed, and neutralize until the pH value is 8.5-9.5; then add acrylic emulsion, defoamer, wax, leveling agent and water to the water-based color paste in sequence, Stir and mix evenly, adjust the viscosity with water to 40-80 seconds, and measure at 25°C with a domestic Tushi 4# cup.

[0047] The inspection method of each parameter is as described in Embodiment 1.

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Abstract

A water-basedsoft printing ink comprises the following compositions: 30 to 35 percent of pigment, 25 to 32 percent of acrylic resin, 0.2 to 0.5 percent of antifoaming agent, 2 to 5 percent of ethylene glycol monomethyl ether, 1.0 to 2.5 percent of wax slurry, 0.9 to 1.5 percent of leveling agent, and 23 to 30 percent of water. A preparation method comprises the three working procedures of colored slurry grinding, aquosity treatment and printing ink preparation in turn. The water-basedsoft printing ink has novel compositions, scientific blending, simple preparation, lower cost, fine ink quality, mellow brightness, high color saturation, brilliant color, high drying speed, grid point superimposition and overprinting, good water solubility, easy cleaning, corrosiveness free on printing rollers, low viscosity, high color content, good penetrability and printing adaptability, suitability for multicolor machine high-speed printing, high abrasion resistance, difficult decolorization, wide color range, closeness to a normal color sample, and consistency to the requirements on top-grade printing; and the printing ink also meets EU ROHS standards, and facilitates safe production and environmental protection with low air pollution and without any noxious solvent residual.

Description

technical field [0001] The invention relates to a resin-based printing ink, in particular to a water-based flexographic printing ink and a preparation method thereof. Background technique [0002] The existing water-based ink in the printing industry has dull color, rough ink quality, low color saturation, low wear resistance, easy to decolorize; relatively high viscosity, slow drying speed, difficult to clean, and has certain corrosion on the printing roller; not suitable High-speed printing of multi-color machines is difficult to meet high-quality printing. Contents of the invention [0003] The technical problem to be solved by the present invention is to overcome the deficiencies of the prior art and provide a water-based flexographic printing ink with low viscosity, easy to clean, bright colors and no corrosion and its preparation method. [0004] The technical solution adopted by the present invention to solve its technical problems is: this water-based flexographic...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09D11/10B41M1/04C09D11/037C09D11/107
Inventor 陈健强
Owner 广东佳景科技股份有限公司
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