Requirements for color ink
Tinplate printing color inks, in addition to having a certain degree of water resistance, also need their special requirements. Since the tinplate surface does not penetrate water and solvents, it needs to be baked and dried, so its ink should be heat-curable. The pigment is required to have higher tinting power and durability. In addition to the basic properties of general offset printing inks, iron printing inks should have heat resistance, strong ink film adhesion, impact resistance, good rigidity, cooking resistance and light resistance according to the characteristics of printing iron.