Introduction to the performance of the hottest wat

2022-08-24
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Introduction to the performance of water-based ink and its application scope

with the improvement of people's living standards and health, and the pursuit of improvement of low toxicity, environmental protection and healthy products, our ink market has changed to a certain extent, and the water-based market is gradually improving. At present, water-based inks mainly include flexible printing and concave printing, most of which are food packaging, tobacco and alcohol, pharmaceutical factories and children's toys, which occupy a considerable market. About 95% of flexible printing and concave printing in the United States and Europe are water-based, while at present, only 3% in China

water based inks were conceived under this background. In the printing field, in order to eliminate VOC (low boiling point organic compounds) released by solvent based inks, that is, to meet the requirements of EPA to reduce or eliminate VOC, chemical engineers have continuously developed high solid coatings, powder coatings, UV curing coatings, water-based coatings, etc. these inks have greatly reduced VOC emissions, and some even eliminated VOC emissions

1 is generally composed of water-based inks that are now chopped and ground into small pieces or particles.

water based inks are made of water-based resins, pigments, solvents and additives through composite processing and grinding. Alcoa and Danieli group are married to promote micromillr technology and equipment. Water soluble resin mainly plays the role of connecting material in the ink, so that the pigment particles are evenly dispersed, so that the ink has a certain fluidity, and produces adhesion with the substrate material, so that the ink forms a uniform film after printing

characteristics of water-based ink

1. Water based ink is a new environmental friendly printing ink with good adhesion, good softness, good elasticity, anti back adhesion, water washing resistance, good printability and durability, and high solid content

2. It is non flammable, ink stable, does not corrode the printing substrate, prevents color migration, has strong water resistance, and dries quickly. It can not only reduce the potential risk of loss caused by static electricity and flammable solvents, but also reduce the residual toxicity on the printing surface. Moreover, it is very convenient to clean the printing equipment, so it is especially used in food, beverage, pharmaceutical and other packaging industries

3. The ink solvent of water-based explosion-proof box is water and a small amount of alcohol, which significantly reduces the emission of VOC, prevents air pollution and does not affect human health. It is also widely used in the printing industry of products in direct contact with people, such as T-shirts and other pure cotton, elastic fabrics, insoles. It is a world recognized environmental protection material, and it is also an ink recognized by the American food association among all printing inks at present

4. In terms of cost, due to the continuous rise in the price of organic solvents, the use cost of solvent based inks is increasing, while the solvent and washing of water-based inks mainly use tap water, which will undoubtedly be much lower than that of solvent based inks

instructions for use of water-based ink

applicable purpose: t (water-based screen printing version)

applicable squeegee: it is recommended to use polyester squeegee or water-based special squeegee

coating area: square meters/kg (77t polyester flat wire or photoresist version)

diluent: neutral water

plate washing water: common tap water

mixing requirements of water-based ink

according to different printing requirements, the viscosity of the ink should be properly adjusted before use, When adjusting, pay attention to keep the added water neutral and alkaline as much as possible, otherwise it will affect the viscosity and drying speed of water-based ink. At the same time, the amount of diluent (water) added should not exceed 3%. Otherwise, or reduce the color concentration of the ink, it will also have a significant impact on the pH value of the water-based ink

printing requirements of water-based inks

due to the characteristics of water-based inks, it is difficult to control the drying speed of inks, so it is suitable for rapid printing when printing. Too slow printing speed is easy to cause rapid drying and blocking of inks on the plate

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