Food cans are the most important and most common production and processing preservation method in the food industry

In our lives, we have a lot of gifts, all of which are packaged in tinplate tin boxes. There are many people who don’t know much about it. Why are all these gift boxes used?

According to the application characteristics of the final product, metal tin box packaging can be divided into the following three categories: 1. Storage metal tin box packaging; 2. Promotional metal tin box packaging; 3. Decorative metal tin box packaging

Coating before printing. Under normal circumstances, the front and back sides of the tinplate need to be coated with the Coating on the outer surface and the Coating on the inner surface to ensure that the printed tinplate products have good canning, canning and appearance decoration requirements. Of course, the coating film thickness of this coating is usually only A few microns thick, it is difficult to completely cover the surface of the tinplate. Therefore, in order to prevent corrosion at the defects of the organic coating film, the tinplate is required to have corrosion resistance, and the oxide film on its surface provides coating film compactness and surface oil layer protection coating film leveling.

Tinplate printing belongs to the category of metal printing,is one kind of special printing. Tinplate printing has its special features in printing technology.

Tinplate has a wide range of applications, from packaging materials for food and beverages to grease cans, chemical cans and other miscellaneous cans. The advantages and characteristics of tinplate provide good protection of the contents in physical and chemical properties.

After the tinplate printing is completed, a layer of varnish is required to increase the gloss and scratch resistance of the tinplate surface, and at the same time increase a certain hardness, so that the printed surface coating film has a certain flexibility and corrosion resistance

The inspection of finished printed tinplate products is divided into two types: conventional physical and chemical inspection and special requirements inspection.