Aluminum Co., Ltd. Guangdong Marriott: aluminum foil classification There are several ways, according to the foil thickness, shape, or material can be classified. Differences can be divided according to the thickness of aluminum foil thick foil, single zero and double zero foil foil. ① foil thickness: 0.1 ~ 0.2mm thickness foil. ② single zero foil: the thickness of 0.01mm and less than 0.1mm / foil. ③ double zero foil: the so-called double-zero foil is in its thickness in mm units of measurement after the decimal point two zero foil, usually aluminum foil thickness of less than 0.0075mm. When the English expression, thick foil called "heavy gaugefoil '', single zero foil called" medium gaugefoil ", double zero foil called" lightgaugefoil ''. Foreign sometimes ≤40ltm thickness of aluminum foil called light gauge foil, and the thickness of> 40btm aluminum foil collectively referred to as heavy gaugefoil. Aluminum foil can be divided according to the shape of a roll of aluminum foil and a sheet of aluminum foil. Most aluminum deep processing wool supply roll was only a few handicraft Chip aluminum foil packaging occasions. Foil according to the state can be divided into hard foil, semi-rigid foil and soft foil. ① hard foil: after rolling without softening treatment (annealing) of aluminum foil, without degreasing treatment, the surface there is a residual Bu Shan. So hard foil printing, laminating, must be degreased before coating, if used for forming it can be used directly. ② semi-rigid foil: foil hardness (or intensity) in rigid aluminum foil and flexible foil is usually used for forming. ③ soft foil: fully annealed after rolling through the softened aluminum foil, a soft material, the surface of 1) an aluminum foil surface is extremely clean, sanitary, any bacteria or micro-organisms can not grow on its surface. (2) is a non-toxic aluminum foil packaging material, it can be in direct contact with food without any hardship can be harmful to human health. (3) aluminum foil as a packaging material is odorless, it does not make the packaged food have any odor. (4) If aluminum foil itself is not volatile, and packaging of its own food will not dry or shrink. (5) whether in high or low temperatures, there will not be grease foil infiltration phenomenon. (6) The opaque aluminum foil as a packaging material, so the sun rays of products, such as margarine is a good packaging material. (7) Al foil has good plasticity, it can be used to package products of various shapes. It can also cause a variety of arbitrary shape of the container. (8) aluminum foil hardness, tensile strength is also large, but small tear strength, so easy to tear. (9) heat sealed foil itself can not be applied on the surface of the heat-resistance material, such as pe to heat closed. (10) when the aluminum foil and other heavy metals or heavy metals in contact, there may be adverse effects.