Due to its excellent properties, aluminum foil is widely used in food, beverage, cigarette, pharmaceutical, photographic floor, household daily necessities, etc., and is usually used as its packaging material; electrolytic capacitor material; thermal insulation material for buildings, vehicles, ships, houses, etc. As a decorative gold and silver wire, wallpaper and various types of stationery printed matter and light industrial products, decorative trademarks. Among the above various applications, the most effective performance of the aluminum foil is as a packaging material. Aluminum foil is a soft metal film, which not only has the advantages of moisture-proof, air-tight, light-shielding, abrasion resistance, fragrance preservation, non-toxic and tasteless, but also because it has an elegant silver-white luster, it is easy to process beautiful patterns of various colors and Pattern, thus more susceptible to people's
Favor. In particular, after the aluminum foil is combined with plastic and paper, the shielding property of the aluminum foil is integrated with the strength of the paper and the heat sealing property of the plastic, thereby further improving the shielding performance for water vapor, air, ultraviolet rays and bacteria which are necessary as packaging materials. , greatly expanded the application market of aluminum foil. Since the packaged article is sufficiently isolated from the outside, such as light, moisture, gas, etc., the package is well protected. Especially for the packaging of retort foods, the use of this composite aluminum foil material can at least guarantee that the food does not deteriorate for more than one year. Moreover, heating and unpacking are very convenient and popular among consumers.
With the improvement of people's living standards and the development of tourism, the demand for beverages and canned foods such as beer and soda is increasing. These require modern packaging and decoration to facilitate competition in the international market. In order to meet the market requirements, packaging materials such as plastic films and sprayed foils have been developed, but their overall performance is not as good as that of overcoating and lamination. Therefore, it can be said that aluminum foil is a perfect packaging material with various excellent properties, and it has fully demonstrated its broad application prospect in many fields.
In order to improve rolling efficiency and quality of aluminum foil products, modern aluminum foil rolling mills have developed in four directions: large volume, wide width, high speed and automation. The width of the roll of the contemporary aluminum foil rolling mill has reached 2200mm or more, the rolling speed has reached 2000m/min or more, and the coil weight has reached 20t or more. The corresponding level of rolling mill automation has also been greatly improved, the thickness control system (AGC) has been installed, and most of them have installed the shape meter (AFC). The aluminum foil industry is facing a period of rapid development.