Aluminum foil is a hot stamping material that is directly rolled into thin sheets from metallic 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 a silvery white luster, if the calendered 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 in color, and will fade when rubbed or touched, so it is not suitable for hot stamping of long-term preservation of book covers, etc. In order to improve 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 roll width 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.

Extended information

Because of its excellent properties, aluminum foil is widely used in food, beverages, cigarettes, medicines, photographic plates, household necessities, etc., and is usually used as its packaging material; electrolytic capacitors Materials; thermal insulation materials for buildings, vehicles, ships, houses, etc.; can also be used as decorative gold and silver threads, wallpapers, various stationery, printed materials and decorative trademarks for light industrial products.

Among the various uses mentioned above, the performance of aluminum foil is most effectively used as a packaging material. Aluminum foil is a soft metal film. It not only has the advantages of moisture-proof, air-tight, light-shielding, abrasion resistance, fragrance retention, non-toxic and tasteless, but also because of its elegant silver-white luster, it is easy to process beautiful patterns and colors of various colors. pattern, so it is more likely to be favored by people.

Baidu Encyclopedia-Aluminum Foil