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Waterborne flexographic printing scraping white ink and preparation method and application thereof

A flexographic printing and water-based technology, applied in the field of water-based flexographic scratch-off white ink and its preparation, can solve difficult problems, achieve high-efficiency covering power, reduce energy consumption, and protect the environment

Active Publication Date: 2015-07-15
SHENZHEN BRIGHT INK & COATING CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In this regard, solvent-based inks have a greater advantage because of their flexible resin system, low surface tension, fast and thorough drying, and thicker ink layers; while general flexographic water-based inks and water-based scratch-off white inks are used as a whole. It is very difficult or cannot meet the requirements to cover the functions of scratching the black below, anti-sticking, and priming the printed graphics and texts on the top. It must be solved from a new technical perspective. In the end, we succeeded. Now the water-based product with environmental protection performance Flexo scratch-off white ink can completely replace solvent-based scratch-off white ink

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0038] Pour 15.0% water-based polyurethane A (Guangzhou Xiangju Chemical Products Co., Ltd., PU-208) into the material tank, add 3.0% dispersant (BAK chemical, BYK190), 20.0% water and 40.0% titanium dioxide ( U.S. DuPont Company, R902), after stirring evenly at 800rpm, obtain the mixture; place the mixture in a sand mill (Kaishike Machinery Equipment Co., Ltd., BT4)) and grind to a particle size≤15 μm to obtain a color paste, adjust the pH value of the color paste to 8.0, add 21.7% water-based polyurethane B (Foshan Haishun Technology Co., Ltd., HMP-1302) and 0.3% organic silicon defoamer (Guangzhou Chenhui Trading Co., Ltd., DC65) to the color paste ), and stir evenly to obtain the water-based flexo scratch off white ink; the percentages are all mass percentages.

[0039] The appearance of the water-based flexographic scratch-off white ink is white, its particle size is less than or equal to 15 μm (50 μm double-groove scraper fineness meter), the viscosity is 11-13 "(Japanes...

Embodiment 2

[0041]Pour 20.0% water-based polyurethane A (Guangzhou Xiangju Chemical Products Co., Ltd., PU-208) into the material tank, add 3.0% dispersant (BAK chemical, BYK190), 20.0% water and 35.0% titanium dioxide ( U.S. DuPont Company, R902), after stirring evenly at 800rpm, obtain the mixture; place the mixture in a sand mill (Kaishike Machinery Equipment Co., Ltd., BT4)) and grind to a particle size≤15 μm to obtain a color paste, adjust the pH value of the color paste to 8.0, add 21.7% water-based polyurethane B (Foshan Haishun Technology Co., Ltd., HMP-1302) and 0.3% organic silicon defoamer (Guangzhou Chenhui Trading Co., Ltd., DC65) to the color paste ), and stir evenly to obtain the water-based flexo scratch off white ink; the percentages are all mass percentages. The appearance of the water-based flexographic scratch-off white ink is white, its particle size is less than or equal to 15 μm (50 μm double-groove scraper fineness meter), the viscosity is 11-13 "(Japanese 4# cup),...

Embodiment 3

[0043] Pour 25.0% water-based polyurethane A (Guangzhou Xiangju Chemical Products Co., Ltd., PU-208) into the material tank, add 2.0% dispersant (BAK chemical, BYK190), 17.0% water and 35.0% titanium dioxide ( U.S. DuPont Company, R902), after stirring evenly at 800rpm, obtain the mixture; place the mixture in a sand mill (Kaishike Machinery Equipment Co., Ltd., BT4)) and grind to a particle size≤15 μm to obtain a color paste, adjust the pH value of the color paste to 8.0, add 20.8% water-based polyurethane B (Foshan Haishun Technology Co., Ltd., HMP-1302) and 0.2% organic silicon defoamer (Guangzhou Chenhui Trading Co., Ltd., DC65) to the color paste ), and stir evenly to obtain the water-based flexo scratch off white ink; the percentages are all mass percentages.

[0044] The appearance of the water-based flexographic scratch-off white ink is white, its particle size is less than or equal to 15 μm (50 μm double-groove scraper fineness meter), the viscosity is 11-13 "(Japanes...

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Abstract

The invention discloses a waterborne flexographic printing scraping white ink and a preparation method and the application thereof, and belongs to the technical field of printing. The waterborne flexographic printing scraping white ink is composed of, by mass percent, the following components of 15.0-25.0% of waterborne polyurethane A, 20.0-30.0% of waterborne polyurethane B, 40.0-50.0% of titanium dioxide, 2.0-3.0% of dispersing agents, 0.1-0.3% of defoaming agent and 10.0-20.0% of water. According to the waterborne flexographic printing scraping white ink and the preparation method and the application thereof, the solvent-free waterborne polyurethane is adopted, the titanium dioxide is added, no organic solvent exists in the full process, VOC emission is nearly zero, the environment can be effectively protected, and mixing of the different waterborne polyurethane is adopted to achieve the overall effect after printing is performed; materials which harm a human body are not contained, a workshop is free of odor and poisonous gas, and the worker health is guaranteed; even if an end consumer makes contact with scraped ink powder when the end consumer scrapes the ink, health hazards are not generated.

Description

【Technical field】 [0001] The invention belongs to the technical field of printing, and in particular relates to a water-based flexographic scratch-off white ink and a preparation method and application thereof. 【Background technique】 [0002] The technology of the present invention is mainly applied to printing of a special product - lottery instant scratch-off white ink printing. [0003] Instant lottery has experienced the following development process: solvent-based ink screen printing, UV isolation oil combined solvent-based ink screen printing, solvent-based ink gravure printing, alcohol-soluble water-based ink flexographic printing. Regardless of the printing method, the finished instant lottery ticket is composed of the following parts: from the inside to the outside, 1. The text description on the back of the lottery ticket; 2. The lottery ticket paper; 3. Anti-projection layer and anti-counterfeiting layer; 4. Lottery ticket data; 5. , UV isolation layer; 6. Scratc...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09D11/102C09D11/037C09D11/033
CPCC09D11/03C09D11/033C09D11/102
Inventor 李飞肖俊涛崔鸿雁
Owner SHENZHEN BRIGHT INK & COATING CO LTD
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