For the printing of metal packaging, tinplate offset printing is generally used in large quantities, and printing is carried out using iron printing machines such as four-color overprinting. However, such printing requires a certain batch size, and small batch printing is not economical because of higher plate-making fees and slotting fees. In small-batch printing, screen printing is currently used as much as possible. Due to the lower cost of plate making, it can greatly reduce costs and reduce production cycles.

　　 For example, small batch printing of metal cans, printing of patterns on the surface of steel drums, small batch printing of metal covers, signs, etc. Practice has proved that because of the low cost and easy realization of screen printing, it has been widely used in the field of small-volume metal packaging.

　　Silk screen is a more important part of screen printing. This is because it controls the fluidity and ink consumption of the ink. At the same time, it also determines the durability and quality of the screen, which determines the quality of printing. Now, people can see high-modulus screen printing screens with good performance on the market.

In particular, the introduction of high binding force, high tension, monofilament, plain woven polyester (PET) mesh (the diameter of the mesh can be as thin as 27μm, and the flat weave mesh with 150 threads per centimeter) has changed people’s The understanding of some important factors in printing has been confirmed in the technology of fine screen printing.

　　 In addition, the silk screen and the screen photosensitive adhesive or photosensitive film have good cross-linking properties, which is also an important factor in the production of high-quality screen printing plates. In recent years, the development of screen printing has made screen printing have good process adaptability and has become a controllable and easy-to-control production process.