What is Aluminum Foil?
Aluminum foil is a hot stamping material that is directly calendered into thin sheets with 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 a soft texture, good ductility, and silver-white luster, if the rolled sheet is mounted on offset paper with sodium silicate and other materials to make aluminum foil, it can also be printed.
However, the aluminum foil itself is easy to oxidize and the color becomes dark, and it will fade when rubbed or touched, so it is not suitable for hot stamping of the covers of books and periodicals that have been stored for a long time. In order to improve the rolling efficiency and the quality of aluminum foil products, modern aluminum foil rolling mills are developing in the four directions of large coils, wide widths, high speeds and automation. The width of the roll body of contemporary aluminum foil rolling mills has reached more than 2200mm, the rolling speed has reached more than 2000m/min, and the coil weight has reached more than 20t.
Because of its excellent characteristics, aluminum foil is widely used in food, beverages, cigarettes, medicines, photographic substrates, household daily necessities, etc., and is usually used as its packaging material; electrolytic capacitor material; heat insulation material for buildings, vehicles, ships, houses, etc.; As decorative gold and silver threads, wallpapers, various stationery printed matter and decorative trademarks for light industrial products, etc.
Among the above-mentioned various applications, the most effective use of 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, shading, abrasion resistance, fragrance retention, non-toxic and tasteless, etc., but also because of its elegant silver-white luster, it is easy to process beautiful patterns and various colors. Patterns are more likely to be favored by people.
