In my cognition, the tinplate can is a kind of packaging product with strong rigidity, good airtightness, good texture and atmospheric appearance. A partner in Douyin asked me before: “Why is it called tinplate?” In fact, tinplate is a canning material, also called tin plated iron, which is corrosion-resistant and can prevent rusting of cans and prolong their service life. Keep the appearance beautiful.
Tinplate cans are usually printed. Printing can not only increase the color of the tin can, but also make your product packaging dazzling in the market, which can attract consumers’ attention at the first glance. The printing process of tinplate cans is quite complicated and the requirements are also high. Today I will give you a brief introduction to its printing process.
First of all, the color inks printed on tinplate cans have a certain degree of water resistance, and there are other special requirements. Since the surface of tinplate does not penetrate water and solvents, it needs to be baked and dried, so the ink should be heat-curable. In addition to the basic performance of general offset printing inks, iron printing inks should also have heat resistance, strong ink film adhesion, impact resistance, good hardness, and cooking resistance according to the characteristics of iron printing inks. Features such as light fastness.
In the production of iron printing, the drying of ink is a complex physical and chemical reaction process. There are many factors that affect drying. Therefore, in order to control the drying speed of ink and ensure product quality, it is necessary to grasp the physical and chemical mechanism of ink drying, that is, the factors that affect the drying speed, in order to effectively perform high-speed iron printing operations.
The drying speed of the ink has become the main content of the ink drying. Then, what is the harm of the ink drying too fast?
1. It can reduce the normal transfer performance of the ink and affect the normal production;
2. It can cause the imprint to be weak, the ink color is light, and the ink dry on the surface of the printing plate and the ink roller, which hinders the ink during the transfer;
3. Can make the printing plate graphic dry structure layer expand outward.
