Scrapable water-based ink for gravure printing and preparation method thereof

Abstract

The invention discloses a scrapable water-based ink for gravure printing. The scrapable water-based ink is prepared from 45-50 parts of a water-based color paste, 35-40 parts of a water-based acrylicemulsion, 0.2-0.5 part of a dispersing agent, 5-10 parts of water, 0.1-0.3 part of a defoamer and 0.2-0.4 part of a leveling agent. The crapable water-based ink for gravure printing adopting the abovestructure has the advantages that compared with a traditional oil-based ink, by taking the water as a solvent, the volatilization of harmful substances is avoided, the environmental pollution is reduced, and the damage to the production personnel and user health is avoided.

Description

technical field [0001] The invention relates to a water-based ink technology, in particular to a scratch-off water-based ink for gravure printing and a preparation method thereof. Background technique [0002] Water-based inks are referred to as water-based inks for short. The main difference between water-based inks and oil-based inks is the difference in solvents, that is, water-based inks use water as a solvent, while the solvents used in water-based inks are water and ethanol excluded from VOC (volatile organic compounds), which contain The VOC content is extremely low, which can greatly reduce VOC emissions and cause less pollution to the environment; while oil-based inks use organic solvents (toluene, xylene, esters, alcohols, etc.) as solvents, and the boiling point of the solvent used is generally Low, very volatile and release toxic gas to pollute the environment, and there are residual toxic substances on the surface after printing, long-term exposure will endanger...

AI Technical Summary

Problems solved by technology

[0002] Water-based inks are referred to as water-based inks for short. The main difference between water-based inks and oil-based inks is the difference in solvents, that is, water-based inks use water as a solvent, while the solvents used in water-based inks are water and ethanol excluded from VOC (volatile organic compounds), which contain The VOC content is extremely low, which can greatly reduce VOC emissions and cause less pollution to the environment; while oil-based inks use organic solvents (toluene, xylene, esters, alcohols, etc.) as solvents, and the boiling point of the solvent used is generally Low, very volatile and release toxic gas to pollute the environment, and there are residual toxic substances on the surface after printing, long-term exposure will endanger the health of users

[0003] With the development of two-dimensional code technology and the Internet of Things, higher requirements are put forward for variable printing, and the demand for scratch-off coverage is further increased. At present, the scratch-off ink for label printing generally adopts screen printing. Not only is the efficiency low, but the inks used are all solvent-based inks, which contain a large amount of benzene series, esters, ethers, and ketones, which not only cause great harm to the working environment and the printer itself, but also emit to In the surrounding atmosphere, PM2.5 is formed, causing environmental pollution