Aluminium foil bag production production requirements for ink

In aluminium foil pouch printing, benzene overload has always been a problem for manufacturers. However, if water-based gravure printing ink is used, it can change this situation and reduce the contamination of residual solvents on the contained food. In order to ensure the effect of custom aluminium foil bag printing, in the process of using, there are seven points of attention can be referred to.

① Adjust the viscosity of the ink with water, generally controlled at 15 to 25 seconds. Prevent the viscosity is too high, resulting in dirty plate, paste plate.

② When using water-based ink for aluminium foil pouch printing, the PH value should be controlled between 8.5 and 9.

③ The drying temperature should be controlled between 50 and 60 degrees Celsius, and when drying, the air volume should be large to ensure that the water-based ink transferred to the film can be quickly air-dried.

④ After the ink is poured into the ink tank, the printing plate cylinder should be idled for 2min~3min before printing is started to ensure that the printing plate cylinder is wet and the ink is stirred effectively. In the process of printing, such as encountering temporary stoppage, to ensure that the printing plate continues to rotate, to prevent the ink on the printing plate to dry and solidify, resulting in the blockage of the mesh.

⑤ It is better to make the depth of the mesh hole of the printing plate cylinder shallower, which is conducive to speeding up the printing speed and saving ink. If the depth of the mesh is too deep, it will not only hinder the printing speed and consume ink, but also be prone to sticking. The specific depth is maintained at 15-25um.

(6) custom food aluminium foil bag printing, according to the depth of the printing plate cylinder mesh hole, adjust the viscosity of the ink, do not add water to the ink in the process of printing, if necessary, add new ink, to ensure that the audio hue is always the same.

(7) After printing, you need to immediately wash the printing plate cylinder, early ink tanks pour water, while turning the printing plate cylinder for cleaning, or add a 3% solution of washing powder, cleaning.

At present, the country has been custom-made aluminium foil bags into the mandatory use of 3C certification directory, which means that the water-soluble aluminium foil bag printing will get a broader development, due to its benzene-free, non-irritating smell, no pollution of food, very suitable for food aluminium foil bag printing. Under the general trend of environmental protection, this kind of environmentally friendly ink printing aluminium foil bag products, will usher in excellent development opportunities.