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A kind of environment-friendly water-based varnish for composite gold cardboard and preparation method thereof

An environmentally friendly, gold cardboard technology, applied in the direction of coating, etc., can solve the problems of small application range of solvent-based varnish, flocculation of water-based varnish, poor compatibility, etc., and achieve excellent adhesion fastness, low VOC emission, and compatibility Good results

Active Publication Date: 2016-08-31
广东博海化工科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] 1) Solvent-based varnish, which uses a large amount of organic solvents such as butanone, cyclohexanone, ethyl acetate, n-propyl acetate, n-butyl acetate, xylene, toluene and other dissolved solid resins in the production and preparation process of the varnish It is obtained from powder, and in the production process of varnish and in the process of coating, the volatilization of organic solvents has caused great harm to the environment and human body; and the cardboard made of solvent-based varnish, on the high-speed UV offset printing machine It is prone to poor printing and deviation of ink adhesion fastness; with the continuous improvement of environmental protection requirements and the continuous improvement of printing technology, the printing quality requirements are getting higher and higher, and the application range of solvent-based varnishes will become smaller and smaller;
[0008] 2) Alcohol-soluble varnish, which is produced by dissolving water-based resins with alcohol-ether solvents during the production and preparation process; while the selectivity of water-based resins is small, the scope of application of varnishes is narrow; in addition to the volatilization of alcohol ethers, it is harmful to the environment and In addition to the greater harm to the human body, the printing adaptability of alcohol-soluble varnishes is poor, and currently only a very small number of composite cardboards that do not require subsequent processes are used;
Ordinary water-soluble dyes have good compatibility with water, but their tinting strength and weather resistance are relatively poor, and they are easy to fade. Flocculation and precipitation phenomenon, it is easy to block the coating plate roller during coating construction, poor color development leads to uneven coloring, missing coating, poor surface leveling, unevenness, poor gloss and other adverse conditions; seriously affect Improve production efficiency and composite gold cardboard quality;
[0012] In order to solve the compatibility problem of conventional water-based varnishes and water-based dyes in the production of composite gold cards, avoid flocculation and precipitation; it is necessary to develop a water-based varnish with good compatibility with water-based dyes and strong color development to adapt to today's and Future development needs of packaging composite gold cardboard

Method used

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  • A kind of environment-friendly water-based varnish for composite gold cardboard and preparation method thereof
  • A kind of environment-friendly water-based varnish for composite gold cardboard and preparation method thereof
  • A kind of environment-friendly water-based varnish for composite gold cardboard and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0057] A kind of environment-friendly water-based varnish for composite gold cardboard, by weight percentage, its formula consists of:

[0058]

[0059]

[0060] The preparation method of this kind of composite gold cardboard with environment-friendly water-based varnish is as follows:

[0061] 1) Configure component A: styrene-acrylic emulsion, self-crosslinking low-temperature curing acrylic emulsion, and water-based wax emulsion are added to the dispersion tank according to the formula ratio, start the agitator, and stir at 400 rpm for 10 minutes;

[0062] 2) Configure component B: Add deionized water, ethanol, water-based anti-wear agent, water-based defoamer, water-based dispersant, and water-based wetting agent into the mixing tank according to the proportion, start the agitator, and rotate at 400 rpm Stir for 12 minutes;

[0063] 3) Mixing: Pump the uniformly stirred component B into the dispersion tank, mix with component A and stir at 400 rpm for 15 minutes;

...

Embodiment 2

[0065] A kind of environment-friendly water-based varnish for composite gold cardboard, by weight percentage, its formula consists of:

[0066]

[0067]

[0068] The preparation method of this kind of composite gold cardboard with environment-friendly water-based varnish is as follows:

[0069] 1) Configure component A: Add styrene-acrylic emulsion, self-crosslinking low-temperature curing acrylic emulsion, and water-based wax emulsion into the dispersion tank according to the formula ratio, start the agitator, and stir at 350 rpm for 15 minutes;

[0070] 2) Configure component B: add deionized water, ethanol, water-based anti-wear agent, water-based defoamer, water-based dispersant, and water-based wetting agent into the mixing tank according to the proportion, start the agitator, and rotate at 350 rpm Stir for 15 minutes;

[0071] 3) Mixing: pump the uniformly stirred component B into the dispersion tank, mix with component A and stir at 350 rpm for 20 minutes;

[00...

Embodiment 3

[0074] A kind of environment-friendly water-based varnish for composite gold cardboard, by weight percentage, its formula consists of:

[0075]

[0076]

[0077] The preparation method of this kind of composite gold cardboard with environment-friendly water-based varnish is as follows:

[0078] 1) Configure component A: styrene-acrylic emulsion, self-crosslinking low-temperature curing acrylic emulsion, and water-based wax emulsion are added to the dispersion tank according to the formula ratio, start the agitator, and stir at 450 rpm for 18 minutes;

[0079] 2) Configure component B: Add deionized water, ethanol, water-based anti-wear agent, water-based defoamer, water-based dispersant, and water-based wetting agent into the mixing tank according to the proportion, start the agitator, and rotate at 450 rpm Stir for 20 minutes;

[0080] 3) Mixing: Pump the uniformly stirred component B into the dispersion tank, mix with component A and stir at 450 rpm for 15 minutes;

...

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Abstract

The invention relates to an environment-friendly waterborne varnish for compound gold card paper. According to the keys of the technical scheme, the waterborne varnish comprises the following substances in percentage by weight: 20-35% of a styrene-acrylic emulsion, 35-50% of a self-crosslinking low-temperature curing acrylic emulsion, 5-10% of a waterborne wax emulsion, 10-25% of water, 10-25% of ethanol, 0.1-0.5% of a waterborne wear-resistant agent, 0.3-0.8% of a waterborne defoaming agent, 0.5-1% of a waterborne dispersant and 0.5-1% of a waterborne wetting agent. The invention provides the environment-friendly waterborne varnish for the compound gold card paper, which has the advantages that the phenomena of flocculation and sedimentation are avoided, good compatibility with the dye and good color development are achieved and the production efficiency is improved.

Description

【Technical field】 [0001] The invention relates to an environment-friendly water-based varnish for composite gold cardboard and a preparation method thereof. 【Background technique】 [0002] In the fields of packaging cardboard printing such as cigarette packaging, wine box packaging, food packaging, pharmaceutical packaging, and cosmetic packaging, the cardboard used is usually made of composite cardboard by attaching aluminum foil and aluminized film to the surface of various cardboards; In order to improve the quality and application fields of composite cardboard, improve the printing adaptability of composite cardboard and protect aluminum atoms from being oxidized and discolored, a layer of varnish is generally coated on the surface of aluminum foil and aluminized film. [0003] Composite cardboard is mainly divided into composite silver cardboard and composite gold cardboard; [0004] Since the surface of aluminum foil and aluminized film is coated with a layer of alumi...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C09D133/08C09D133/12C09D125/14C09D123/06C09D7/12
CPCC08L2205/03C09D7/40C09D7/65C09D133/08C08L25/14C08L23/06
Inventor 余桂强褚波
Owner 广东博海化工科技有限公司
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