Plastic film Water-based gravure printing ink features advantages
Date: Oct 23 2023 From: Star Color
Water-based ink is a high solid content, low viscosity surface printing, printing general purpose ink.Water-based inks get rid of organic solvents, improve the working environment, eliminate toxic and harmful substances in solvent-based inks, eliminate the pollution of packaged goods, used in rotary gravure printing press after corona treatment of BOPP, PE, PVC film printed food bags, medicine bags, beverage bags and other packaging and printing products.Adapt to printing speed 50-250 m/min, adapt to low and medium speed printing, with non-combustible, non-explosive, non-toxic, non-irritating taste, ink stability, bright color, no corrosion plate, easy to operate, good adhesion after printing, water resistance and other characteristics, drying speed can meet the needs of printing plants, four-color overprinting and spot color printing.
Four advantages of water-based ink
1.Does not pollute the atmosphere environment
Vocs (volatile organic gases) are recognized as one of the major sources of global air pollution today.Because water-based inks use water as a dissolved carrier, they almost do not emit volatile organic gases (voc) to the atmosphere, either in their production process or when they are used for printing, which is unmatched by other inks.
For the treatment of low concentration VOC, in addition to a very small number of packaging and printing plants using activated carbon adsorption treatment, but the investment is large，The operation and maintenance cost is high, and the recovered solvent contains high water, which cannot be used and processed.Most companies choose to vent directly into the atmosphere.Not only that, in the printing process, the organic solvent in the solvent-based ink is almost completely dried and quickly volatilized out, in addition to the high concentration of VOC above the printing press is used such as catalytic combustion or microbial treatment process, the low concentration of VOC in the air in the printing workshop is often directly discharged into the atmosphere.If the proportion of organic solvents in solvent-based inks is 25%-35%, the amount of VOC directly discharged into the atmosphere is quite amazing.And water-based ink just overcome this shortcoming.This unique feature of no pollution to the atmospheric environment is being favored by more and more printing and packaging enterprises.
2.Reduce residual poisons on printed materials
Water-based ink does not contain organic solvents, so that the residual toxic substances on the surface of the printed matter are greatly reduced.This feature in tobacco, alcohol, food, beverages, medicines, children's toys and other packaging and printing products with strict sanitary conditions, more reflects the good health and safety.Nowadays, human beings pay more and more attention to food safety, and the residual amount of harmful substances in packaging materials and packaging printing is also strict, and the use of water-based ink is a good choice.
3.Reduce resource consumption and environmental protection costs
Water-based inks have an inherent characteristic - high solid content and can be deposited in thin ink films.Therefore, compared with solvent-based inks, its coating amount (the amount of ink consumed per unit of printing area) is less.According to the test, compared with solvent-based ink, water-based ink can reduce the coating amount by about 10-30%.That is to say, to print the same number and specifications of printed matter, the consumption of water-based ink is reduced by about 10-30% compared with solvent-based ink.
Because the printing plate needs to be cleaned frequently.Therefore, the use of solvent-based ink printing, need to use a lot of organic solvent cleaning solution; While using water-based ink printing, the cleaning medium is mainly water.From the perspective of resource consumption, water-based ink is more economical and in line with the theme of a conservation-oriented society advocated in today's world.
4.Improve the safety of the operating environment
Organic solvents and solvent-based inks themselves are flammable liquids, organic solvents are very volatile, will form an explosive mixture of gases in the air, and will explode after reaching the explosion limit concentration of spark.Therefore, solvent-based inks are quite dangerous in their manufacturing process and during printing.
According to China's current regulations, the production of solvent-based inks belongs to the production of hazardous chemicals.It is necessary to have perfect conditions for the production and management of hazardous chemicals in order to obtain a production license.The unique toxicity of organic solvents is extremely adverse to the health of production personnel, and the state health supervision and administration department defines such operations as occupational hazard operations.At the same time, there are strict regulations on the concentration of VOC in the air of the work site, and operators must regularly do occupational health check-ups to protect the health of contact operators. The use of water-based ink printing can effectively solve this problem and greatly improve the safety of the operating environment for operators.
Water-based ink is currently the only non-toxic ink approved by the United States Food and Drug Association.
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