Water-based gold ink suitable for overprinting and preparation method thereof

Abstract

The invention relates to the field of printing ink, and discloses water-based gold ink suitable for overprinting and a preparation method thereof. The water-based gold ink is prepared from, by weight,15-25 parts of bronze powder, 30-50 parts of a water-based binder, 15-25 parts of absolute ethyl alcohol, 10-25 parts of deionized water, 2-5 parts of a surfactant and 1-3 parts of auxiliaries. The preparation method comprises the following steps: mixing and stirring bronze powder and a mixed solvent of absolute ethyl alcohol and deionized water in parts by weight, fully wetting and dispersing the materials, soaking the prepared copper paste for 24 hours, adding the water-based binder into the copper paste in parts by weight, carrying out stirring at a high speed, fully dispersing the mixtureand adding the surfactant and auxiliaries into the materials, carrying out stirring at a high speed, and uniformly mixing the materials to obtain the water-based gold ink. Compared with the prior art, the phenomenon that copper powder undergoes an oxidation reaction when meeting water to generate verdigris is effectively avoided, the surface tension of the water-based gold ink can be adjusted byadjusting the proportion of the surfactant in the gold ink, and the overprinting problem of the gold ink can be effectively solved.

Description

technical field

[0001] The invention relates to the field of printing inks, in particular to a water-based gold ink suitable for overprinting and a preparation method thereof. Background technique

[0002] At present, gravure printing is generally printed with organic solvent-based inks, so that the surface of the tipping paper used contains a lot of organic volatile residual substances, such as benzene series, esters, ethers, ketones and other substances. The above substances will contact the human body and produce Certain potential hazards. At the same time, due to the unavoidable volatilization of organic solvents during the printing process using solvent-based inks, a large amount of VOC emissions will be generated to the environment and the surrounding atmosphere, causing certain environmental pollution, and the application of water-based inks can greatly reduce volatile organic solvents. compound release.

[0003] Water-based gold ink is a uniform paste-like substanc...

Examples

Embodiment approach 1

[0033] This embodiment provides a water-based gold ink suitable for overprinting, including the following components and parts by weight: 25 parts of copper and gold powder, 35 parts of water-based binder, 17.5 parts of absolute ethanol, 17.5 parts of deionized water, 0.5 parts of poly Acrylic acid, 0.2 parts of defoamer, 0.5 parts of wax liquid, 0.5 parts of emulsified silicone oil, 0.3 parts of coconut oleic acid amide, 2.5 parts of alkyl phosphorus carboxylate (AEC).

[0034] The preparation steps of above-mentioned water-based gold ink are as follows:

[0035] 1) Mix the copper gold powder and the mixed solvent of absolute ethanol and deionized water evenly, fully wet and disperse, and soak the prepared copper paste for 24 hours;

[0036] 2) Put the water-based binder into the copper slurry by weight and stir at high speed to fully disperse;

[0037] 3) Add surfactants and additives, stir at high speed, and mix well to obtain water-based gold ink.

Embodiment approach 2

[0039] This embodiment provides a water-based gold ink suitable for overprinting, including the following components and parts by weight: 25 parts of copper and gold powder, 35 parts of water-based binder, 17.5 parts of absolute ethanol, 17.5 parts of deionized water, 0.2 parts of poly Acrylic acid, 0.6 part of defoamer, 0.5 part of wax liquid, 0.2 part of emulsified silicone oil, 0.5 part of coconut oleic acid amide, 3 parts of alkyl phosphorus carboxylate (AEC).

[0040] The preparation steps of the above-mentioned water-based gold ink are exactly the same as those in Embodiment 1, and will not be repeated here.

Embodiment approach 3

[0042] This embodiment provides a water-based gold ink suitable for overprinting, including the following components and contents in parts by weight: 30 parts of copper and gold powder, 35 parts of water-based binder, 18 parts of absolute ethanol, 12 parts of deionized water, 0.1 part of poly Acrylic acid, 0.2 parts of defoamer, 0.5 parts of wax liquid, 0.5 parts of emulsified silicone oil, 0.3 parts of coconut oleic acid amide, 2.5 parts of alkyl phosphorus carboxylate (AEC).

[0043] The preparation steps of the above-mentioned water-based gold ink are exactly the same as those in Embodiment 1, and will not be repeated here.

[0044] It is known that on different printing substrates and printing inks, the overprinting effect of water-based gold ink is different. The three embodiments of the present invention are respectively adapted to different printing inks, and can effectively improve the overprinting of water-based gold ink. Table 1 and Table 2 respectively show the over...

technical field

[0001] The invention relates to the field of printing inks, in particular to a water-based gold ink suitable for overprinting and a preparation method thereof. Background technique

[0002] At present, gravure printing is generally printed with organic solvent-based inks, so that the surface of the tipping paper used contains a lot of organic volatile residual substances, such as benzene series, esters, ethers, ketones and other substances. The above substances will contact the human body and produce Certain potential hazards. At the same time, due to the unavoidable volatilization of organic solvents during the printing process using solvent-based inks, a large amount of VOC emissions will be generated to the environment and the surrounding atmosphere, causing certain environmental pollution, and the application of water-based inks can greatly reduce volatile organic solvents. compound release.

[0003] Water-based gold ink is a uniform paste-like substanc...

Examples

Embodiment approach 1

[0033] This embodiment provides a water-based gold ink suitable for overprinting, including the following components and parts by weight: 25 parts of copper and gold powder, 35 parts of water-based binder, 17.5 parts of absolute ethanol, 17.5 parts of deionized water, 0.5 parts of poly Acrylic acid, 0.2 parts of defoamer, 0.5 parts of wax liquid, 0.5 parts of emulsified silicone oil, 0.3 parts of coconut oleic acid amide, 2.5 parts of alkyl phosphorus carboxylate (AEC).

[0034] The preparation steps of above-mentioned water-based gold ink are as follows:

[0035] 1) Mix the copper gold powder and the mixed solvent of absolute ethanol and deionized water evenly, fully wet and disperse, and soak the prepared copper paste for 24 hours;

[0036] 2) Put the water-based binder into the copper slurry by weight and stir at high speed to fully disperse;

[0037] 3) Add surfactants and additives, stir at high speed, and mix well to obtain water-based gold ink.

Embodiment approach 2

[0039] This embodiment provides a water-based gold ink suitable for overprinting, including the following components and parts by weight: 25 parts of copper and gold powder, 35 parts of water-based binder, 17.5 parts of absolute ethanol, 17.5 parts of deionized water, 0.2 parts of poly Acrylic acid, 0.6 part of defoamer, 0.5 part of wax liquid, 0.2 part of emulsified silicone oil, 0.5 part of coconut oleic acid amide, 3 parts of alkyl phosphorus carboxylate (AEC).

[0040] The preparation steps of the above-mentioned water-based gold ink are exactly the same as those in Embodiment 1, and will not be repeated here.

Embodiment approach 3

[0042] This embodiment provides a water-based gold ink suitable for overprinting, including the following components and contents in parts by weight: 30 parts of copper and gold powder, 35 parts of water-based binder, 18 parts of absolute ethanol, 12 parts of deionized water, 0.1 part of poly Acrylic acid, 0.2 parts of defoamer, 0.5 parts of wax liquid, 0.5 parts of emulsified silicone oil, 0.3 parts of coconut oleic acid amide, 2.5 parts of alkyl phosphorus carboxylate (AEC).

[0043] The preparation steps of the above-mentioned water-based gold ink are exactly the same as those in Embodiment 1, and will not be repeated here.

[0044] It is known that on different printing substrates and printing inks, the overprinting effect of water-based gold ink is different. The three embodiments of the present invention are respectively adapted to different printing inks, and can effectively improve the overprinting of water-based gold ink. Table 1 and Table 2 respectively show the over...

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