In this article, let Baowu show you what aluminum foil is?
Aluminum foil is a hot stamping material that is directly rolled from metal aluminum into thin sheets. 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 of aluminum, good ductility and silvery white luster, if the rolled 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 easily oxidized and the color becomes dark, and the color will be faded by friction and touch, so it is not suitable for hot stamping of long-term preservation of book covers, etc.
Because of its excellent properties, aluminum foil is widely used in food, beverages, cigarettes, medicines, photographic plates, household daily necessities, etc., and is usually used as its packaging material; electrolytic capacitor material; thermal insulation material for buildings, vehicles, ships, houses, etc.; it can also As decorative gold and silver thread, wallpaper and various stationery prints and decoration trademarks of light industrial products, etc.
Among the above-mentioned various uses, the one that can most effectively exert the performance points of aluminum foil is as a packaging material. Aluminum foil is a soft metal film, which not only has the advantages of moisture resistance, air tightness, shading, abrasion resistance, fragrance preservation, non-toxic and tasteless, etc., but also because of its elegant silver-white luster, it is easy to process beautiful patterns and patterns of various colors. pattern, so it is more likely to be favored by people. Especially 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 heat sealing property of plastic, which further improves the shielding properties of water vapor, air, ultraviolet rays and bacteria, which are necessary as packaging materials. , greatly broadening the application market of aluminum foil.
Since the packaged items are fully isolated from the outside light, humidity, gas, etc., the packaged items are well protected. Especially for the packaging of cooked food, the use of this composite aluminum foil material can ensure that the food does not deteriorate for at least one year.
In addition, aluminum foil has a clean, hygienic and shiny appearance, it can be made into an integrated packaging material with many other packaging materials, and it is also non-toxic, tasteless, odorless, and non-volatile.
