Aluminum foil is obtained by pressing aluminum alloy into thin pieces. Because of its softness and good sealing effect, aluminum foil is widely applied in packaging, heat insulation and decorative materials, among which packaging best embodies its advantages.
Aluminum foil wins popularity for several reasons. First, it’s soft and moisture resistant. This makes it particularly suitable to be used as packaging materials. Second, unlike some other metal materials that contain toxic elements, it’s nontoxic and of good wear resistance. Even if applied to daily items, it’s healthy and environmental. Third, it’s convenient to print colored designs and pictures based on its graceful silver surface, which strengthens its decorative function. Fourth, when compounded with other materials like, aluminum foil shows better strength, heat insulation, water-proof ability and anti-corrosive property. Cooked food wrapped by this kind of foil lasts over a year without going bad. Besides, it’s convenient to cook wrapped food and then open the package to eat.
With economic development and increasing demand for fast food, the application of aluminum foil is more and more widened. These days people attach more importance to appearance. They tend to believe that there will always be noble souls under attractive appearances. Beers and beverages of medium quality, if matched with aluminum seal and package, sell at a good price. Can food is contained in aluminum foil cans to keep freshness and extend guarantee period. Modern rolling mills can produce aluminum foils of larger width, thicker rolls, rapider speed and more advanced automation. The width of a roller can reach as much as 2200mm and above. The speed of rolling is 2000m/min and more. The weight of a single roll of foil is at least 20 tons. Most rolling mills are equipped with automatic system like AGC and AFC.