Plastic water-based ink is composed of raw materials such as water-based resins, additives, pigments, and water. When selecting materials, all need to meet environmental protection requirements, and pure water is used in place of organic solvents in the production process. Water-based ink is non-combustible, non-explosive, odorless and non-toxic. It is the most environmentally friendly printing ink in the world.
Environmental advantages of water-based inks
Plastic water-based inks have no volatile organic solvents (VOC) and no odor during printing due to the use of water as a solvent. No pollution or damage to the environment and the body of printing operators. Water-based ink products do not burn by themselves, and do not cause fire due to static electricity and short circuits. Printed with water-based inks without any solvent residue in the printed products, which meets the environmental protection requirements of food packaging and other packaging in any country and region in the world. .
Advantages of water-based inks in printing costs
For printing with water-based inks, first it does not need to be diluted with any organic solvents, only water is sufficient. The printing industry often says "how much solvent can be added", such as adding 30% -50% solvent to the ink, and mistakenly believe that the more solvent is better, the lower the cost. In fact, 30% -50% of the solvent added is added during the entire printing process, which is due to the change in ink viscosity caused by the volatilization of the solvent. The faster the printing speed, the faster the volatility of the thinner needs to be adjusted, and the more times the solvent is added, this is equivalent to continuously increasing the printing cost. Therefore, it is not necessary to start printing after adding 5k solvent to 10kg ink. According to industry standards, high ink density and low viscosity (except silk screen, etc.) are good inks.
This is related to the raw materials selected by the ink manufacturer, such as the molecular weight of the resin, the formula, and the production process. Except for the closed printing shop, the amount of solvent added in the printing process will vary due to factors such as temperature and wind. Adding a thinner to the ink only reduces the viscosity of the ink and makes it suitable for printing. When added, the color density of the ink will decrease, and the amount of the binder will decrease at the same time, so that a good product cannot be printed. Therefore, water-based ink is only added with pure water, and it is added at one time (pre-press). In the printing process, it will not cause the color change due to the viscosity change, and it will not be like the ink, because the waste produced when the thinner needs to be added during printing, which greatly improves the qualification rate of the printed product and saves This reduces the cost of solvents and reduces the occurrence of waste products, which is one of the cost advantages of water-based inks.