Because tinplate cans are printed at the end, they can be made into tea cans, toys, metal photo frames, and barrels and cans of chemical products. Therefore, it is implored that printing inks have better adhesion and corresponding mechanical functions to tinplate tea cans. In order to improve the ink adhesion, the tinplate tea can is firstly coated with base oil before printing. White is the base color of all screens and has a very high brightness. Participate in other high-energy hue in the future, can improve the lightness of each hue to form a gradation.
Tinplate tea can printing has special requirements for white ink:
The appearance of tinplate tea cans is snow-white (or yellow) and has a metallic luster. Before tinplate printing colorful graphics, the appearance needs to be painted white or printed white. Constrained by the ability of the ink masking, monochrome machines often need to be printed white twice. Whiteness can reach 75%. Whiteness is an important target for the quality of tinplate can printing products.