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Aluminum foil

Brief introduction—— A hot stamping material that is directly pressed into thin sheets using metal aluminum, and its hot stamping effect is similar to that of pure silver foil, so it is also called fake silver foil.…

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A hot stamping material that is directly pressed into thin sheets using metal aluminum, and its hot stamping effect is similar to that of pure silver foil, so it is also called fake silver foil. Due to the soft texture, good ductility and silver white luster of aluminum, if the rolled sheet is mounted on offset paper with Sodium metasilicate and other substances to make aluminum foil, it can also be printed. However, aluminum foil itself is prone to oxidation and its color darkens, causing it to fade due to friction, touch, and other factors. Therefore, it is not suitable for hot stamping of books and magazine covers that have been stored for a long time.

Aluminum foil, due to its excellent properties, is widely used as a packaging material for food, beverages, cigarettes, pharmaceuticals, photographic substrates, household items, etc; Materials of Electrolytic capacitor; Thermal insulation materials for buildings, vehicles, ships, houses, etc; It can also be used as decorative gold and silver thread, wallpaper, as well as decoration trademarks for various stationery and printed products and light industrial products. Among the various uses mentioned above, the most effective way to utilize the performance of aluminum foil is as a packaging material. Aluminum foil is a soft metal film that not only has the advantages of moisture resistance, airtightness, shading, wear resistance, fragrance retention, non-toxic and odorless properties, but also has an elegant silver white luster, making it easier to process beautiful patterns and patterns of various colors, making it more popular among people. Especially after the composite of aluminum foil with plastic and paper, the shielding properties of aluminum foil are integrated with the strength of paper and the thermal sealing properties of plastic, further improving the necessary shielding properties for water vapor, air, ultraviolet radiation, bacteria, etc. as packaging materials, greatly expanding the application market of aluminum foil. Due to the sufficient isolation of the packaged items from external light, moisture, and air, the packaging is well protected. Especially for the packaging of steamed food, using this composite aluminum foil material can ensure that the food does not spoil for at least one year. Moreover, heating and unpacking are both very convenient and popular among consumers.

With the improvement of people's living standards and the development of tourism, the demand for beverages such as beer and soda, as well as canned food, is increasing day by day. These require modern packaging and decoration to facilitate competition in the international market. In order to meet market requirements, people have developed packaging materials such as plastic film and spray coated foil with good shielding properties, but their comprehensive performance is not as good as that of overcoating and lamination processing, which can be compensated and improved. Therefore, it can be said that aluminum foil is a perfect packaging material with various excellent properties, and has fully demonstrated its broad application prospects in many fields.

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 width of the roll body of contemporary aluminum foil rolling mills has reached over 2200mm, the rolling speed has reached over 2000m/min, and the coil weight has reached over 20t. The automation level of the corresponding rolling mill has also greatly improved, with the widespread installation of a thickness control system (AGC) and the majority equipped with a flatness gauge (AFC). The aluminum foil industry is facing a period of rapid development.




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