Eco friendly water based inks is characterized by non-toxic, tasteless and non irritating. During the use of the product, the mixture of tap water and ethanol can be diluted directly, which will not endanger the environment and human health. Therefore, it has been widely used in products with strict printing requirements, such as tobacco, wine and food However, due to the lack of good stability and water resistance, environment-friendly water-based ink can not be well developed and applied in the packaging and printing industry Therefore, through the application of various mixed formulas, this paper carried out a series of experiments to study the performance of eco friendly water based inks from the aspects of stability and water resistance According to the research, through the application of thickener in waterborne emulsion, the ink and wash can be more water resistant and stable.
Eco friendly water based inks is known as a new type of "green" printing material because it does not contain volatile organic solvents, is not flammable, will not damage the health of ink manufacturers and printing operators, and has no pollution to the atmospheric environment. It is especially suitable for packaging and printing products with strict sanitary conditions, such as tobacco, wine, food, beverage, medicine, children's toys and so on. eco friendly water based inks is a uniform slurry composed of connecting materials, pigments, additives and other substances.
The so-called environment-friendly water-based ink is mainly made by scientific processing with water as solvent. Compared with other printing inks, environment-friendly water-based ink does not contain volatile toxic organic solvents, so it has no adverse impact on the health of printer operators, no pollution to the atmospheric environment and no pollution to the print itself Because the ink is non flammable, it can also eliminate the hidden danger of flammability and explosion in the printing workshop, which is conducive to safe production Of course, the application scope of ink and ink is different now. Ink is mainly offset printing, ink is mainly flexo printing and gravure printing In developed countries such as Europe, America and Japan, ink has gradually replaced ink and become a special ink for other printing methods except offset printing Taking the United States as an example, 95% of flexographic printing and 80% of gravure printing use ink
Eco friendly water based inks has the excellent characteristics of non-toxic, non irritating smell and non corrosiveness. It can be widely used in packaging and printing products with strict sanitary conditions, and has played a positive role in promoting the supporting domestic products of flexographic printing in China.
The drying speed of water-based ink depends on the printing speed of the printing press, the drying capacity of the drying equipment, the performance of the substrate material and the composition of the ink itself. If the ink dries too fast, it will dry and gradually accumulate on the printing plate and anilox roller, and may block the anilox roller, resulting in the loss or damage of halftone dots and white leakage in the field; If the drying speed of the ink is too slow, the back will be sticky and dirty in the case of multi-color overprint.
In fact, the viscosity and pH value of environment-friendly water-based ink will also have a certain impact on the drying performance of the ink. For example, too high viscosity will reduce the drying speed of the ink, and too low pH value will dry the ink too fast. Therefore, in the printing process, we should first adjust and control the viscosity and pH value of water-based ink, and then add an appropriate amount of fast drying agent or slow drying agent to the ink according to the actual printing speed to adjust the drying speed of water-based ink.Eco-friendly Ink manufacturers
website:http://www.kageminks.com/eco-friendly-ink/