Metal can packaging is a common form of packaging, which refers to packaging containers made of metal materials, especially in the form of cans. This form of packaging is widely used due to its portability and ability to protect products. The main materials of metal can packaging include aluminum and tinplate, among which aluminum occupies an important position in the packaging industry due to its lightness and non-rusting properties. A metal packaging is made of two materials: steel sheets called aliminium and bin. Steel sheets are plated with tin and organic lac, therefore the direct contact of steel with food is inhibited. Hereby, corrosion resistant metal packages are produced. It is produced as the corrosion resistant metal packaging.
The manufacturing process of metal can packaging usually includes the separate production of the can body and the can lid, and then assembling them together. There are many types of this packaging form, including three-piece cans, two-piece cans and special-shaped cans, each of which has its unique advantages and applicable fields.
The three-piece can is composed of three metal sheets: the can body, the can bottom and the can lid. It is usually made of tinplate. It is mostly used in the food industry due to its good rigidity, ability to produce cans of various shapes, high material utilization rate, easy size change and a wide variety of packaging products.
The two-piece can was introduced in the mid-20th century. It consists of a can body and a can cover, but no lower can cover. The process principle is to use a punch to stretch the metal sheet, then connect the can bottom and can body together, and then add the can cover to complete the production. This type of can is mostly used for beverages such as beer.
Special-shaped cans refer to metal cans with special shapes. Most of them are innovative and more attractive in appearance, but the production process is complicated and the cost is high. They are mostly used in food, gifts and other fields.
The wide application of metal can packaging is due to its material properties, such as better pressure resistance than general packaging, convenient transportation and not easy to be damaged. In addition, the diversity of metal can packaging forms and materials also meets the packaging needs of different products, and is widely used in industries ranging from food to cosmetics, medicines, etc.
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