Muji Tin Box.MP4

The surface of the sheet is silver white (or yellow) with metallic luster. Before printing color graphics, the surface needs to be painted or printed white. Due to the limitation of coverage capacity, monochrome machines often need to print white twice, and the whiteness can reach 75%. The whiteness is an important indicator of the quality of tinplate printing products. White ink is required to have a good adhesion with the primer. Repeated baking at high temperature will not yellowing, and high temperature steaming will not fade. It is required to base the sheet, increase the adhesion to the sheet, and have a good adhesion to white ink. The commonly used primer is epoxy amine, with light color, no yellowing, no aging after repeated baking, good flexibility, and impact resistance

2022/12/23