To use water-based plastic ink for printing, first of all, it does not need to use solvents, just water. How much solvent can the printing industry add? For example, if you add 50%- 100% solvent to the ink, you mistakenly think that the more solvent you add, the better, and the lower the cost. In fact, 50%- 100% of the solvent is added in the whole printing process. This is because the volatilization of solvent changes the viscosity of ink and is added. The faster the printing speed, the faster the diluent to be prepared volatilizes and the more times the solvent is added. This is equivalent to increasing the printing cost. Therefore, printing does not start until 10 kg of ink is added with 5 kg of solvent. According to the standard of ink industry, high color density and low viscosity are good inks. Diluent is added to ink only to reduce the viscosity of ink. Make it suitable for printing, if it is added too much, the color density of the ink will decrease. At the same time, the weight of the adhesive is reduced, so that good products cannot be printed. Therefore, only pure water is added to water-based ink, and it is added at one time (prepress). In the printing process, it will not change color due to viscosity change, nor will it produce waste products by adding diluent in the printing process like ink, thus greatly improving the qualification rate of printed products. The cost of solvent is saved, and the appearance of waste products is reduced. This is one of the cost advantages of water-based plastic ink.

China plastic gravure printing water-based ink starts today!

The advanced characteristics of waterborne plastic ink are: good adhesion, fast drying, no need to modify or change the drying channel when adding water, and it can also meet the drying requirements of various printing machines. It avoids the reluctance of printing enterprises to increase investment due to the use of water-based ink, and the printing color is full, the leveling and wettability are good, the printing is clear, and the printing effect has reached the level of medium and high-grade solvent-based ink.

This picture is a low-pressure PE film, printed by gravure press. The printer adjusts the viscosity of the original ink by adding water according to experience, and then starts printing. Rotation speed 1200 rpm, drying channel 80 cm. The four blowing fans are fully open and do not heat. Water-based ink for plastic gravure printing in China has a long way to go;

In view of the imperfect and irregular production and application technology of plastic soft bags in China, and the lack of professional training and ink mechanism for printing operators, printers can't correctly and orderly master the organic combination of printing machines, printing plates and ink, so as to achieve the purpose of doing a good job and reducing waste. In the early 10 years of printing industry, ink manufacturers have successfully developed water-based plastic inks again and again. The printing factory had a lot of trouble after using it. The drying channel was changed and modified. Sometimes the adhesion is ok, but it won't start if it dries slowly, and the printing effect is very poor. Sometimes the adhesion of printed products is completely wasted, and senior ink engineers fail to improve again and again. Printing enterprises are disgusted. I don't trust water-based plastic ink, and even think that water-based plastic printing is not established.

Therefore, a comprehensive water-based plastic gravure printing ink has a long way to go.