Water-based ink refers to the use of water instead of the organic solvent in the traditional ink as the dissolving medium, so as to form a printing material with low pollution and high safety. It is mainly composed of binders, pigments, additives and other substances, which is non-flammable and non-toxic, harmless to the health of operators, and will not pollute the atmospheric environment or the printed matter itself. In addition, due to its low viscosity and good fluidity, it is widely used in packaging and printing products with strict hygienic conditions such as cigarettes, alcohol, food, beverages, medicines, and children's toys. In the preparation and application of water-based inks, the role of defoamers cannot be ignored. Because in the process of manufacturing water-based ink, it is easy to blister, which will have a series of negative effects on water-based ink, in order to solve this problem, you can chooseDefoamer for water-based inks
Application scenario diagram of water-based ink defoamer).
In the production process of water-based inks, foaming problems are a common phenomenon. The reason for this is due to a number of factors: printing speed is too fast, and when the press is running too fast, the rapid transfer of ink between the printing plate and the paper can introduce air and form bubbles. Use tap water with high hardness, water is one of the main components of water-based inks. If you use tap water with a high degree of hardness, it will cause unevenness in surface tension and may produce foam. The surface tension of the ink solvent is unequal, which is conducive to the formation and stability of bubbles. If the cycle is too aggressive or too long, air will be mixed into the ink, resulting in bubbles.
The existence of foam has many effects on water-based ink, and the uniform texture of the ink can ensure the printing quality, and the foaming will destroy the uniformity and reduce the production efficiency. After the foam in the tank overflows, the foam flows into the reel, wetting the printing paper, and the printing machine cannot work normally.
Defoamer for water-based inksIt is made of specially modified polyether and fluorine-containing raw materials through special technology, which is easily soluble in water, especially suitable for continuous defoaming and foam inhibition under the conditions of high temperature, strong acid and alkali, high shear force and high pressure, and has high temperature resistance, acid and alkali resistance, no floating, no oil floating; It can be used for foam defoaming in a wide range of harsh systems over a wide temperature range.