Views: 0 Author: Site Editor Publish Time: 2022-06-20 Origin: Site
The utility model relates to a hot stamping material which 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. Due to the soft texture, good ductility and silver white luster of aluminum, 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, the aluminum foil itself is easy to oxidize and darken, and the color will fade when it is rubbed, touched, etc., so it is not suitable for the hot stamping of the covers of books and periodicals that have been preserved for a long time.
Because of its excellent characteristics, aluminum foil is widely used in food, beverage, cigarette, medicine, photographic base plate, household daily necessities, etc. it is usually used as its packaging material; Electrolytic capacitor materials; Thermal insulation materials for buildings, vehicles, ships, houses, etc; It can also be used as decorative gold and silver thread, wallpaper, and decoration trademarks of various stationery prints and light industrial products. Among the above-mentioned uses, the most effective way to give full play to the performance 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 tightness, shading, abrasion resistance, fragrance preservation, non-toxic and tasteless, but also because of its elegant silver white luster, it is easy to process beautiful patterns and patterns of various colors, so it is more likely to be favored by people. In particular, after the aluminum foil is compounded with plastic and paper, the shielding property of aluminum foil is integrated with the strength of paper and the therma+
l sealing property of plastic, which further improves the necessary shielding properties of water vapor, air, ultraviolet and bacteria as packaging materials, and greatly expands the application market of aluminum foil. As the packed articles are fully isolated from the outside light, moisture, gas, etc., the packaging materials are well protected. Especially for the packaging of cooked food, the use of this composite aluminum foil material can ensure that the food will not deteriorate for at least one year. Moreover, heating and unpacking are very convenient, and they are very popular with consumers.
With the improvement of people's living standards and the development of tourism, the demand for beer, soft drink and other beverages and canned food is increasing day by day. All these require modern packaging and decoration to facilitate competition in the international market. In order to meet the market requirements, people have developed packaging materials such as plastic film and sprayed foil with good shielding, but their comprehensive properties are not as good as those of overcoating and laminating. Therefore, it can be said that aluminum foil is a perfect packaging material with many excellent properties, 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 coil, wide width, high speed and automation. The width of roll body of contemporary aluminum foil rolling mill has reached more than 2200mm, the rolling speed has reached more than 2000m/min, and the coil weight has reached more than 20t. The corresponding automation level of rolling mill has also been greatly improved. Thickness control system (AGC) is generally installed, and most of them are installed with flatness gauge (AFC). Aluminum foil industry is facing a period of rapid development.