Most of China's packaging liquor, wine, medicinal wine and beverages are still mainly glass bottles, and about 50% of the bottle caps are anti-theft caps made of aluminum. Anti-theft caps will increase at a rate of 10% per year. It is estimated that by 2010, the amount of anti-theft caps will reach 15 billion, and about 60,000 tons of aluminum plates and strips will be needed.

It is understood that there are nearly 200 aluminum bottle cap production plants in China, with an annual design capacity of about 9 billion pieces, of which 30 production lines have been introduced, with a production capacity of more than 5 billion pieces, which can produce nearly 100 kinds of bottle caps. Aluminum bottle caps are mostly processed on production lines with a relatively high degree of automation, so the strength, elongation and dimensional deviation of the materials are very strict, otherwise it will cause cracks or creases during deep drawing processing.

In order to ensure that the bottle cap is easy to print after molding, the material surface of the bottle cap is required to be flat, without rolling marks, scratches and stains. The alloy materials generally used are 8001—HI4 and 3003—H16. The material specifications are generally 0.20-43.23mm thick, with a tolerance of ± 0.1%, and a width of 449-796mm. The production of aluminum bottle cap material can be made by hot-rolled billet or continuous casting and rolling billet, which are made by cold rolling. Production practice shows that the hot rolled billet is better than the cast rolled billet in the use effect of the anti-theft cover.