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High gloss and high abrasion resistant water-based overprinting varnish and preparation method thereof

A technology with high wear resistance and varnish, applied in textile and papermaking, fiber raw material processing, paper coating, etc., can solve the problems of non-curing, high product price, poor abrasion resistance of paper, etc., to ensure safety and environmental protection, Simple construction method and the effect of excellent abrasion resistance

Inactive Publication Date: 2012-08-29
苏州凯康化工科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This kind of product has high gloss and high wear resistance, but the product price is high, and UV varnish easily penetrates into the middle layer of paper fiber, resulting in poor or even uncurable UV curing effect, and has certain toxicity, so it cannot be used for packaging in the food and drug industry. printed varnish
[0004] 2. Alcohol-soluble varnish: mainly acrylic resin synthesized with alcohol as a solvent. The product is characterized by low cost and high gloss. However, this type of product has a large amount of alcohol volatilization when it is put on the machine, which is harmful to the environment and production safety. It is a big problem. In addition, the paper after printing and varnishing has poor abrasion resistance
[0005] 3. Oily varnish: due to the volatilization of a large amount of benzene solvents during use, this type of product is not environmentally friendly and seriously affects personal safety. Few manufacturers produce it in the market today, and it is almost eliminated by the market
[0006] 4. BOPP laminating film: BOPP film is compounded on the paper ink by glue, which has the characteristics of high wear resistance and high gloss, but it is not an environmentally friendly product. It is difficult to recycle and biodegrade the paper after use.
Water-based varnish is a new type of printing and varnish material that has been researched and developed by developed countries in recent years. It has been paid more and more attention by people in the printing industry. As a new green printing material, its environmental protection and safety are self-evident. , is the most environmentally friendly and energy-saving of the above varnish products, but water-based products are not as good as other products due to gloss and friction, so it is not easy to promote and apply in the market, so increase its research and development efforts to improve the quality of water-based varnish products It is the key to develop the water-based product market, respond to the national environmental protection policy and benefit personal safety

Method used

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  • High gloss and high abrasion resistant water-based overprinting varnish and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0046] Add 10 g of deionized water and 10 g of water-soluble solid acrylic resin into the dispersing cylinder, add 6 g of ammonia water while stirring, and disperse 2 hours after the addition until the water-soluble solid acrylic resin is completely dissolved; 40g of water-based acrylic emulsion with glass transition temperature of 90°C, 26g of water-based acrylic emulsion with low glass transition temperature of 20°C, water-based palm wax 2644 15g, BYK333 1g, WDF-568 0.1g and urethane acrylate 2.2g, after adding, Stir for 30 minutes until completely uniform; the pH value is 8.0 and the viscosity is 25°C. # The cup is 58 seconds, and then the solid content is detected, and 1 gram is sampled and dried at 120 ° C for 1.5 hours. That's it.

Embodiment 2

[0048] Add 10 g of deionized water and 10 g of water-soluble solid acrylic resin into the dispersing cylinder, add 2 g of ammonia water while stirring, and disperse for 3 hours until the water-soluble solid acrylic resin is completely dissolved after adding; 60g water-based acrylic emulsion with glass transition temperature of 80°C, 21g water-based acrylic emulsion with low glass transition temperature of 10°C, water-based palm wax 2644 10g, BYK333 0.5g, WDF-568 1g and urethane acrylate 1.5g, after adding, Stir for 45 minutes to complete uniformity; sample and test the pH value of 8.2, test the viscosity, adjust with 2g of thickener, and apply 4 to 25°C. # Cup for 50 seconds, then test the solid content, sample 2 grams and dry it at 120 ° C for 1.5 hours, measure the dry film weight to be 0.800g, calculate the solid content to be 40%, and pass the test, use a 120-mesh filter bag to filter and pack. .

Embodiment 3

[0050]Add 20g of deionized water and 15g of water-soluble solid acrylic resin into the dispersing cylinder, add 10g of ammonia water while stirring, and disperse 2.5 hours after the addition until the water-soluble solid acrylic resin is completely dissolved; 50g water-based acrylic emulsion with glass transition temperature of 90°C, 32g water-based acrylic emulsion with low glass transition temperature of 30°C, water-based palm wax 12g, BYK333 1.5g, defoamer 0.5g and thickener 1g, after adding, stir 60min to complete uniformity; sampling and testing pH value is 7.8, testing viscosity, adjusting with 1g thickener, for coating at 25℃ # 4 cups for 47 seconds, then check the solid content, sample 2 grams and dry it at 120 ℃ for 1.5 hours, the dry film weight is 0.806g, and the solid content is 40.3%. .

[0051] The water-based overcoat varnishes prepared in the above-mentioned embodiments 1-3 were directly varnished with a rubber roller varnishing machine, and the varnish perfor...

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Abstract

The invention discloses a high gloss and high abrasion resistant water-based overprinting varnish and a preparation method thereof. The overprinting varnish comprises the following components: deionized water, water-soluble solid acrylic resin, non film-forming material, film material, ammonia water, water-soluble emulsion wax, wetting and leveling agent, defoaming agent and thickener. The overprinting varnish of the invention uses water as solvent; when the overprinting varnish is used, only water is volatilized, thus the overprinting varnish is environmentally friendly; and the overprinting varnish does not contain heavy metals and can pass through the volatile organic compound (VOC) detection, thus being a safe and green product. The product of the invention uses water-soluble acrylic emulsion as the main matrix which combines with water-soluble solid acrylic resin, thus the safety and environmental friend of the product can be further ensured; and by adopting the special raw material combination, the product has good printing and glazing effects, high transparency and lustrousness and excellent wear resistance and is color-fast and scratch resistant; and after printed and glazed, the product has good water resistance and is not easy to scratch.

Description

technical field [0001] The present invention relates to the field of printing packaging materials. Specifically, it is a high-gloss and high-wear-resistant water-based varnish that is used for glazing after paper printing and improves the printing effect of paper. Background technique [0002] In today's printing and packaging industry, people pay more and more attention to the perfection of packaging. Most of the printed paper is covered with a layer of varnish to improve the gloss of the paper and prevent color fading and scratching. At present, there are water-based varnishes, UV varnishes, alcohol-soluble varnishes and oil-based varnishes on the market for varnishing, and some use composite BOPP films. The market analysis of these overcoat products is as follows: [0003] 1. UV varnish: It is mainly composed of epoxy acrylate, reactive diluent, photoinitiator, defoamer, leveling agent, etc. It is diluted with a small amount of alcohol when it is put on the machine, and...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C09D133/00C09D7/12D21H19/20
Inventor 黄伊君
Owner 苏州凯康化工科技有限公司
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