Crown bottle cap is an important part of the beverage packaging industry, the downstream consumer market demand strong changes, will directly affect the market demand for crown bottle cap, and the vigorous development of the beverage industry, the higher the requirements for product packaging, followed by the demand for crown cap products. Moreover, crown cap products occupy a key position in the beverage packaging industry, so the development trend of the beverage industry will directly affect the demand for crown cap products. The demand for crown closure products market is stable and growing, but the change of packaging materials used has relatively changed the structure of crown closure products; Overall, the ratio of crown caps will be improved. Although some of the crown caps are replaced by plastic caps, they are mainly used in wine and functional drinks, and the demand for claw caps has grown steadily, while the demand ratio of claw caps has changed greatly.
Crown bottle cap is a stamped tinplate cap, generally according to the actual needs usually choose 0.23mm thickness, hardness T3 or T4, tin plating layer of 1.1°/2.8g/m2 tinplate (SPTE) or chrome iron (TFS). The material of tinplate should meet the MR standard, and the imported iron should meet the Japanese JISG3303 standard; It must not only have a certain strength and hardness, but also have a certain impact resistance.
The properties of printing inks or coating raw materials must meet the actual use requirements of crown caps. It is better to choose supporting products of the same manufacturer with good quality and reputation, otherwise it is necessary to manage the experiment before it can be put into mass production. Tinplate materials and printing materials are the basic materials for product quality assurance. In many cases, poor product quality is caused by unstable or unsatisfactory raw material performance, which should also attract enough attention.
