Aluminum foil material is widely the application of special product packaging and more used in medicine, food packaging bags, cable shielding layer, all kinds of insulation, etc., the main reason, now in the market of aluminum foil material in plastic bags of special widely used, more used in medicine, food packaging bags, cable shielding layer, all kinds of insulation, etc., mainly due to: metal aluminum has good ductility, can make it. Metal aluminum will be oxygen oxidation, in the density of metal surface to form a layer of oxide Al2O3 protective film, prevent oxygen to keep metal aluminum oxide, made of aluminum foil bag, of course, use this layer of dense protective film can be a very good isolation from the outside air into the bag inside, have the effect of prevent food by the oxidation. In developed countries, flexible packaging has become one of the main packaging form of food, beverage,Replaced the cans and bottles within certain limits. Aluminum foil bag not only has the effect of moisture, fresh, and can print all kinds of patterns and text, is the ideal of modern commercial packaging materials.