The aluminum foil

It is a kind of hot stamping material which is directly calendered 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 is soft and malleable, it has a silvery luster. If the calendered thin sheet is mounted on offset paper with sodium silicate and other substances, it can also be printed. But the aluminum foil itself is easy to oxidize and the color becomes dark, friction, touch and so on will fade, so it is not suitable for the hot stamping of the cover of books and periodicals for a long time.

Because of its excellent characteristics, aluminum foil is widely used in food, beverage, cigarette, medicine, photographic plate, household daily necessities, etc., usually used as its packaging material; Electrolytic capacitor material; Insulation materials for buildings, vehicles, ships, houses, etc.; Can also be used as decorative gold and silver thread, wallpaper and all kinds of stationery printed matter and light industrial products decoration trademarks. Among the above applications, the most effective use of aluminum foil performance is as a packaging material. Aluminum foil is a soft metal film, not only has the advantages of moisture-proof, air-tight, shading, abrasion resistance, fragrance, non-toxic and tasteless, but also because of its elegant silver-white luster, easy to process a variety of beautiful patterns and patterns of color, so it is more likely to be favored by people. In particular, aluminum foil and plastic and paper composite, the shielding of aluminum foil and the strength of paper, plastic thermal sealing integration, further improve as a packaging material necessary for water vapor, air, ultraviolet and bacteria shielding performance, greatly expand the application of aluminum foil market. Because the packaged goods and the outside light, moisture, gas and other fully isolated, so that the packaging is well protected. Especially for cooking food packaging, the use of this composite aluminum foil material, at least can ensure that food does not deteriorate for more than a year. Moreover, it is very convenient to heat and open the package, which is very popular with consumers.

With the improvement of people's living standards and the development of tourism, the demand for beer, soft drinks and canned food is increasing day by day, which need modern packaging and decoration to compete in the international market. In order to meet the requirements of the market, people have developed good shielding plastic film and spray foil packaging materials, but their comprehensive properties are not as good as coating and laminating processing can be compensated and improved. Therefore, it can be said that aluminum foil is a perfect packaging material with a variety of excellent performance, which fully shows its broad application prospects in many fields.

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