Aluminum foil because of its excellent characteristics, widely used in food, beverages, cigarettes, pharmaceuticals, photographic substrates, household daily necessities, etc., usually used as its packaging materials, electrolytic capacitor materials, buildings, vehicles, ships, houses, such as insulation materials, can also be used as decorative gold and Silver lines, wallpapers and all kinds of stationery prints and light industrial products decoration trademarks. Of the above uses, aluminum foil performance points can be most effectively used as packaging materials. Aluminum foil is a soft metal film, not only has moisture-proof, airtight, shading, wear-resistant, Paushan, non-toxic tasteless and other advantages, but also because of its elegant silver-white luster, easy to process a variety of colors of beautiful patterns and patterns, so it is more likely to be favored by people. In particular, aluminum foil and plastic and paper composite, the shielding of aluminum foil and paper strength, plastic thermal sealing into one, further improve the packaging materials necessary for water vapor, air, ultraviolet rays and bacteria, such as shielding performance, greatly broadening the application of aluminum foil market. Because the packaged items are fully isolated from the outside light, humidity, gas, etc., so that the packaging is well protected. Especially for the packaging of cooking food, the use of this composite aluminum foil material, at least to ensure that the food does not deteriorate for more than one year.
Moreover, heating and opening bags are very convenient, popular with consumers. With the improvement of people's living standards and the development of tourism industry, beer, soda and other beverages and canned food demand is increasing, these need to have modern packaging and decoration, in order to facilitate competition in the international market. In order to meet the market requirements, people have developed a good shielding plastic film and spray plating foil and other packaging materials, but their comprehensive performance is not as well as the coating and laminating can be compensated and improved.
Therefore, it can be said that aluminum foil is a variety of excellent performance, relatively perfect packaging materials, in many fields have fully demonstrated its broad application prospects. In order to improve the rolling efficiency and the quality of aluminum foil products, modern aluminum foil mill to large roll, wide width, high speed, automation four direction development. The roll width of the contemporary aluminum foil mill has reached more than 2200mm, the rolling speed reaches more than 2000m/min, and the roll weight reaches more than 20t. The corresponding rolling mill automation level has also been greatly improved, the thickness control system (AGC) is generally installed, and most of the plate-shaped instrument (AFC) is installed. Aluminum foil industry is facing a period of rapid development.