Printing ink is a paste-like colloid composed of pigments, binders, fillers and other ingredients mixed uniformly. As a viscous fluid ink, due to its different varieties, the performance is also poor <, that is, there are thick and rare, the difference in viscosity strength, the difference between fast drying and slow drying, etc. Therefore, to correctly understand and understand the role of ink components in the ink is of great significance to accurately adjust the characteristics of the ink, meet the creativity of various printing conditions, and improve the printing quality of the product. 1. The role of pigment in ink Colorants include pigments and dyes. The colored materials used in printing inks are usually pigments, and some dyes are also useful. They are all very fine colored particles. Pigments are generally insoluble in water or in binders. Most of them are in a suspended state in solution, while dyes are generally soluble in binders. Pigments have a great influence on the performance of the ink. The relative density, transparency, heat resistance, light resistance and resistance to chemicals of the ink are all related to the pigment. The role of pigment in the ink is obvious, its color determines the hue of the ink; its amount determines the concentration of the ink; its use gives the ink a certain consistency and other physical properties; its use affects to a certain extent The drying property of the ink, especially the ink based on oxidative polymerization drying, is particularly outstanding. In addition, the durability of the ink in all aspects is determined by the pigment. Therefore, due to the different types and uses of inks, the use of pigments is also different. This requires that the ink should be selected according to the application and process characteristics of the product when printing. , Fast curing, wear-resistant ink to ensure printing quality. Second, the role of the binder in the ink The binder is a fluid with a certain viscosity and viscosity, and its functions are various. As a carrier of pigments, it serves to mix and connect solid particles such as powdered pigments, so that the pigments that are stuck together can eventually adhere to the printed matter. While the binder affects and determines the fixing speed, drying speed and drying type of the ink, it can also give the ink certain physical properties such as gloss, friction resistance, yellowing resistance and impact resistance, and to a large extent Determines the viscosity, viscosity, yield value and fluidity of the ink, so high-quality inks originate from high-quality binders. If the preparation of the linking material or the production process is not suitable, the ink will not only lack bright and good gloss colors after printing, but also cause chain quality failures such as pasting, smearing, through-printing, pulling paper wool and no ink, etc. Bring certain obstacles. Therefore, the binder is a factor that greatly affects the ink quality. 3. The role of filler in ink The filler is a white solid substance that can be uniformly and well dispersed in the binder, and is a fine powder. When the filler material is mixed and ground into a slurry after being ground, some are transparent and some are opaque. Commonly used fillers are aluminum hydroxide, potassium sulfate, magnesium carbonate and calcium carbonate. In the ink, the filler can adjust the consistency, viscosity, viscosity, fluidity and yield value of the ink, and on the other hand, it can adjust the ink density. The situation can be achieved by adding filler. Although the filler has an auxiliary role in the ink, its performance has many requirements that are consistent with the pigment. In the ink based on oxidative polymerization and drying, it also affects the dryness. Fourth, the role of additives in ink For printing operators, the printability of the ink is good, and it can be put into use as soon as the can lid is opened, which is of course the most convenient and trouble-free. However, due to differences in the temperature and humidity of the printing environment, the characteristics of the printing material and the printing process conditions, such as the paper's moisture content PH value, printer speed, and overprinting methods, etc., although the ink types are diverse, The ratio of pigments, binders and fillers used in the ink is almost constant, and often cannot meet the printability requirements of various conditions. Therefore, from the perspective of improving printing efficiency and quality, according to the changing printing conditions, adding appropriate additives in the selected ink is beneficial to ensure normal printing. Center Seal Bag Making Machine Automatic Bag Making Machine,Center Seal Bag Making Machine,Bag Maker,High Speed Bag Making Machine Wuxi Zhengyu Technology Development Co.,Ltd. , https://www.zhengyumachine.com