Aluminum foil bag printing requirements for ink
Door Handle On Rosette,Brushed Lever Door Handle,Front Lever Door Handle,Fancy Solid Lever Door Handle Wenzhou Shenghong Metal Products Co.,Ltd , https://www.shenghonglock.com
December 28 13:08:16, 2023
In the printing of aluminum foil bags , benzene exceeding the standard has always been a problem that plagues manufacturers. However, if a water-based gravure ink is used, this condition can be changed to reduce the contamination of the food contained in the residual solvent. In order to ensure the printing effect of custom aluminum foil bags, there are 7 points to note in the process of use.
1. Adjust the viscosity of the ink with water, generally controlled at 15 to 25 seconds. Prevent the viscosity from being too high, resulting in dirty plates and pastes.
2. When using water-based ink for aluminum foil bag 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. When drying, the air volume should be large to ensure that the water-based ink transferred to the film can be quickly dried.
4. After the ink is poured into the ink tank, the plate cylinder is idling for 2 min to 3 minutes, and then printing is started to ensure that the plate cylinder is wet and the ink is effectively stirred. In the process of printing, if there is a temporary shutdown, it is necessary to ensure that the printing plate continues to rotate, to prevent the ink on the printing plate from drying up, and the grid is blocked.
5. The depth of the grid of the plate cylinder is preferably shallower, which is beneficial to speed up the printing speed and save ink. The mesh is too deep, which not only hinders the printing speed, consumes ink, but also tends to cause adhesion. The specific depth is maintained at 15 to 25 um.
6. Before printing the customized food foil bag, adjust the viscosity of the ink according to the depth of the plate cylinder. Do not add water to the ink during the printing process. If necessary, add new ink to ensure the audio color is consistent.
7. After printing, immediately wash the plate cylinder, pour clean water into the early ink tank, rotate the plate cylinder for cleaning, or add 3% detergent solution for cleaning.
At present, the country has made the aluminum foil bag into the mandatory 3C certification catalogue, which means that the water-soluble aluminum foil bag printing will be more developed, because it has no benzene, no irritating odor, no pollution, very Suitable for printing food foil bags. Under the general trend of environmental protection, this environmentally friendly ink-printed aluminum foil bag product will usher in excellent development opportunities.