Water-based gravure white ink for film printing and preparation method of water-based gravure white ink

A white ink, water-based technology, applied in the field of water-based gravure white ink and its preparation, can solve the problems of volatile organic compounds emission and pollute the environment, and achieve the effects of reducing VOC emissions, high color and improving environmental protection.

Pending Publication Date: 2022-03-18
中山市中益油墨涂料有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] In order to solve the problem of environmental pollution caused by the emission of volatile organic compounds (VOCs) caused by the use of solvent-based inks in gravure printing for flexible packaging, the present invention provides a water-based gravure white ink for film printing, which can realize green gravure without solvent and zero discharge print

Method used

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  • Water-based gravure white ink for film printing and preparation method of water-based gravure white ink
  • Water-based gravure white ink for film printing and preparation method of water-based gravure white ink
  • Water-based gravure white ink for film printing and preparation method of water-based gravure white ink

Examples

Experimental program
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Effect test

Embodiment 1

[0028] A preparation method for water-based gravure white ink for film printing, comprising the following steps:

[0029] S1: Prepare the raw materials according to the parts by weight in Table 1, put the water-based polyurethane resin, titanium dioxide, and water-based dispersant into the container, stir and mix evenly, the stirring time is 18 minutes, the stirring speed is 1000 rpm, and the stirring condition is 30°C, the pressure is normal pressure;

[0030] S2: use a sand mill to grind to a fineness of less than 5 microns, the grinding pressure is 5MPa, and the temperature is 60°C;

[0031] S3: Then add ethanol, water-based wetting agent, water-based defoamer, water-based wax slurry, and deionized water, and stir to mix evenly. The stirring time is 5 minutes, the stirring speed is 6000 rpm, the stirring condition is 30°C, and the pressure is constant. pressure;

[0032] S4: After the stirring is completed, filter through a 150-mesh gauze to obtain the product.

Embodiment 2

[0034] A preparation method for water-based gravure white ink for film printing, comprising the following steps:

[0035] S1: Prepare the raw materials according to the parts by weight in Table 1, put the water-based polyurethane resin, titanium dioxide, and water-based dispersant into the container, stir and mix evenly, the stirring time is 20 minutes, the stirring speed is 800 rpm, and the stirring condition is Celsius 35°C, the pressure is normal pressure;

[0036] S2: use a sand mill to grind to a fineness of less than 5 microns, the grinding pressure is 4MPa, and the temperature is 65°C;

[0037] S3: Add ethanol, water-based wetting agent, water-based defoamer, water-based wax slurry, and deionized water, and stir to mix evenly. The stirring time is 3 minutes, the stirring speed is 800 rpm, the stirring condition is 35°C, and the pressure is constant. pressure;

[0038] S4: After the stirring is completed, filter through a 150-mesh gauze to obtain the product.

Embodiment 3

[0040] A preparation method for water-based gravure white ink for film printing, comprising the following steps:

[0041] S1: Prepare the raw materials according to the parts by weight in Table 1, put the water-based polyurethane resin, titanium dioxide, and water-based dispersant into the container, stir and mix evenly, the stirring time is 22 minutes, the stirring speed is 900 rpm, and the stirring condition is Celsius 25°C, the pressure is normal pressure;

[0042] S2: use a sand mill to grind to a fineness of less than 5 microns, the grinding pressure is 5MPa, and the temperature is 55°C;

[0043] S3: Then add ethanol, water-based wetting agent, water-based defoamer, water-based wax slurry, and deionized water, stir and mix evenly, the stirring time is 5 minutes, the stirring speed is 800 rpm, the stirring condition is 25°C, and the pressure is constant pressure;

[0044] S4: After the stirring is completed, filter through a 150-mesh gauze to obtain the product.

[0045...

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Abstract

The invention provides water-based gravure white ink for film printing and a preparation method of the water-based gravure white ink, and the water-based gravure white ink is prepared from 50-52% of water-based polyurethane resin, 1-2% of a water-based dispersing agent, 4-6% of ethyl alcohol, 0.3-0.5% of a water-based wetting agent, 0.2-0.3% of a water-based defoaming agent, 35-40% of titanium dioxide, 1-2% of water-based wax slurry and 2-4% of deionized water. According to the gravure white product, through reasonable formula proportion and no addition of any solvent harmful to human bodies in the production process, VOC emission is greatly reduced, the odor of the product is reduced, a traditional solvent type gravure white product is replaced, and the gravure white product is good in film material adhesive force, good in wear resistance, high in color and luster, quick to dry and low in residual odor, and can be printed on the product, so that the gravure white product has a good application prospect. And the printing requirement is met, and meanwhile the environment-friendly degree is improved.

Description

technical field [0001] The invention belongs to the technical field of polymer inks, and in particular relates to a water-based gravure white ink for film printing and a preparation method thereof. Background technique [0002] In the packaging and printing industry, gravure printing for flexible packaging is the most polluting, and solvent-based gravure ink is the biggest source of pollution. It contains a large amount of toxic and harmful volatile organic compounds such as toluene, formaldehyde, and methanol, which seriously pollutes the environment and endangers the health of operators. In addition to solvent volatilization, the ink layer in printing production needs infrared heating to dry, which consumes a lot of energy. At the same time, a large amount of solvent volatilization will also cause the collapse of printing dots, so it is difficult to print fine patterns. Contents of the invention [0003] In order to solve the problem of environmental pollution caused by ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09D11/102C09D11/03C09D11/033
CPCC09D11/102C09D11/03C09D11/033
Inventor 包勇柳小玉
Owner 中山市中益油墨涂料有限公司
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