Summary： There are many types of aluminum foil, and different aluminum foils have different functions. It can be classified according to the thickness, shape, condition
There are many types of aluminum foil, and different aluminum foils have different functions.
It can be classified according to the thickness, shape, condition or material of aluminum foil.
Aluminum foil can be divided into thick foil, single zero foil and double zero foil according to the thickness difference. ① Thick foil: A foil having a thickness of 0.1 to 0.2 mm. ②Single-zero foil: foils with a thickness of 0.01 mm and less than 0.1 mm /. ③ Double Zero Foil: The so-called double zero foil is a foil with two zeros after the decimal point when the thickness is measured in mm, usually an aluminum foil with a thickness of less than 0.0075mm. In English, thick foil is called "heavy gaugefoil", single zero foil is called "medium gaugefoil", and double zero foil is called "lightgaugefoil". Foreign countries sometimes refer to aluminum foil with a thickness of ≤40ltm as light gauge foil, and aluminum foil with a thickness of> 40btm are collectively called heavy gaugefoil.
Aluminum foil can be divided into rolled aluminum foil and sheet aluminum foil by shape. Most of the aluminum foil deep-processed wool is supplied in a roll shape, and only a few handicraft packaging occasions use sheet aluminum foil.
Aluminum foil can be divided into hard foil, semi-rigid foil and soft foil according to the state. ① Rigid Foil: Aluminum foil that has not been softened (annealed) after rolling and does not have a degreasing treatment has a residual surface. Therefore, the hard foil must be degreased before printing, laminating, and coating. If it is used for forming, it can be used directly. ② Semi-rigid foil: Aluminum foil whose hardness (or strength) is between rigid foil and flexible foil. It is usually used for forming. ③ Soft foil: Aluminum foil that is softened after being fully annealed after rolling. The material is soft and there is no residual oil on the surface. At present, most applications, such as packaging, composites, electrical materials, etc., use flexible foil.
Aluminum foil can be divided into one side light aluminum foil and two sides light aluminum foil according to the surface state. ① One-sided smooth aluminum foil: Double-rolled aluminum foil, which has a bright side after being rolled, and the surface is black. This type of aluminum foil is called one-sided smooth aluminum foil. The thickness of bright aluminum foil on one side usually does not exceed 0.025mm. ② Double-sided smooth aluminum foil: a single sheet of rolled aluminum foil, which is in contact with the roll. The two sides of the aluminum foil are divided into mirror-faced double-sided smooth aluminum foil and ordinary double-sided smooth aluminum foil due to the different surface roughness of the roll. The thickness of double-sided light aluminum foil is generally not less than 0.01mm.
Aluminum foil can be divided into plain foil, embossed foil, composite foil, coated foil, colored aluminum foil and printed aluminum foil. ① Plain foil: Aluminum foil without any other processing after rolling, also known as light foil. ② Embossed foil: Aluminum foil with various patterns on the surface. ③ Composite foil: Composite aluminum foil formed by laminating aluminum foil with paper, plastic film, and cardboard. ④Coated foil: Aluminum foil coated with various resins or lacquers on the surface. ⑤Colored aluminum foil: The surface is coated with a single color aluminum foil. ⑥Printed aluminum foil: Aluminum foil with various patterns, patterns, characters or pictures on the surface can be printed by one color, up to 12 colors.
Aluminum foil has a series of advantages such as light weight, tightness and good covering property. Therefore, it has been widely used in many sectors of the national economy and people's daily life, but it is currently mainly used in the three major fields of packaging, electrical and mechanical and construction.