Requirements for printing ink for aluminum foil bag production

As an important material in food packaging, aluminum foil bags are too stupid to meet the standard, which has always been a problem for plastic bag manufacturers. How do aluminum foil bag customization manufacturers solve this industry problem? That is how to operate water-based ink and water-based ink. I will tell you one by one! 1. Before the customized food aluminum foil bag is printed, adjust the ink viscosity according to the depth of the screen hole of the printing plate cylinder. Do not add water to the ink during the printing process. If necessary, add new ink to ensure that the audio color is always consistent. 2. The drying temperature should be controlled between 50 ℃ and 60 ℃. When drying, the air volume should be large to ensure that the water-based ink transferred to the film can be dried quickly. 3. Adjust the ink viscosity with water, generally within 15-25 seconds. To prevent the viscosity is too high, resulting in dirty version, paste version. 4. The mesh hole depth of the printing plate cylinder should be shallow, which is conducive to accelerating the printing speed and saving ink. If the mesh hole is too deep, it will not only hinder the printing speed, consume ink, but also easily cause adhesion. The specific depth shall be kept at 15~25um. 5. Before the customized food aluminum foil bag is printed, adjust the ink viscosity according to the depth of the screen hole of the printing plate cylinder. Do not add water to the ink during the printing process. If necessary, add new ink to ensure that the audio color is always consistent. 6. When using water-based ink for aluminum foil bag printing, the PH value should be controlled between 8.5 and 9. 7. After the ink is poured into the ink tank, the printing plate cylinder shall be idle for 2-3 min before printing to ensure that the printing plate cylinder is wet and the ink is effectively stirred. In the process of printing, in case of temporary shutdown, ensure that the printing plate continues to rotate to prevent the ink on the printing plate from drying and causing mesh hole blockage. 8. Before the customized food aluminum foil bag is printed, adjust the ink viscosity according to the depth of the screen hole of the printing plate cylinder. Do not add water to the ink during the printing process. If necessary, add new ink to ensure that the audio color is always consistent. At present, the state has included the customized aluminum foil bags in the 3C certification directory of mandatory use, which means that the printing of water-soluble aluminum foil bags will get broader development. Because it has no benzene, no pungent smell, and no food pollution, it is very suitable for the printing of food aluminum foil bags. Under the general trend of environmental protection, the aluminum foil bag products printed with environment-friendly ink will usher in excellent development opportunities.