Crown caps are an important part of food and beverage packaging, and they are also where consumers first contact the product. Crown bottle cap has the ability to keep the contents of the product sealed, but also has the function of anti-theft opening and security, so it is widely used in bottled products, so crown bottle cap for food, beverage industry, wine, chemical industry, pharmaceutical industry upstream industry, is the key product of bottle container packaging. In the early stage of the development of crown caps, the use of cork, tinplate crown caps and screw-open caps, and so far the development of aluminum long-neck aluminum caps, carbonated drinking aluminum caps, heat-filled aluminum caps, injection aluminum caps, medicine caps, flip-open ring caps, safety button claw caps and plastic bottle caps and other products.