Aluminum foil is a hot stamping material that is directly rolled into thin sheets by metal aluminum. Its hot stamping effect is similar to that of pure silver foil, so it is also called fake silver foil. Because aluminum has soft texture, good ductility and silver white luster, if the rolled sheet is mounted on offset paper with sodium silicate and other substances to make aluminum foil, it can also be printed. However, aluminum foil itself is easy to oxidize and darken, and will fade when rubbed, touched, etc., so it is not suitable for hot stamping of long-term preserved book covers.

Because of its excellent characteristics, aluminum foil is widely used in food, beverage, cigarette, medicine, photographic base plate, household articles, etc., and is usually used as its packaging material; Electrolytic capacitor materials; Thermal insulation materials for buildings, vehicles, ships, houses, etc; It can also be used as decorative gold and silver thread, wallpaper, various stationery prints and decoration trademarks of light industrial products. Among the above-mentioned uses, aluminum foil can be used as a packaging material most effectively. Aluminum foil is a soft metal film, which not only has the advantages of moisture-proof, air tight, light shielding, abrasion resistance, fragrance protection, non-toxic and tasteless, but also is easy to process beautiful patterns and patterns of various colors because of its elegant silver white luster. In particular, after aluminum foil is combined with plastic and paper, the shielding property of aluminum foil is integrated with the strength of paper and the heat sealing property of plastic, which further improves the shielding property of water vapor, air, ultraviolet rays and bacteria necessary for packaging materials, and greatly broadens the application market of aluminum foil. As the packaged goods are fully isolated from the light, humidity, air, etc. of the outside world, the packaged goods are well protected. Especially for the packaging of cooked food, the use of this composite aluminum foil material can ensure that the food will not deteriorate for at least one year. Moreover, it is very convenient to heat and unpack, which is very popular with consumers.

With the improvement of people's living standards and the development of tourism, the demand for beer, soda and other beverages and canned foods is increasing day by day. All these require modern packaging and decoration to facilitate competition in the international market. In order to meet the market requirements, people have developed packaging materials such as plastic film and spray foil with good shielding, but their comprehensive properties are not as good as those of overcoating and laminating. Therefore, it can be said that aluminum foil is a perfect packaging material with many excellent properties, which fully shows its broad application prospects in many fields.

In order to improve the rolling efficiency and the quality of aluminum foil products, modern aluminum foil rolling mills are developing in four directions: large coil, wide width, high speed and automation. The width of roll body of contemporary aluminum foil rolling mill has reached more than 2200mm, the rolling speed has reached more than 2000m / min, and the coil weight has reached more than 20t. The automation level of the corresponding rolling mill has also been greatly improved. Thickness control system (AGC) is generally installed, and most of them are equipped with shape gauge (AFC). Aluminum foil industry is facing a period of rapid development.