Summary：Aluminum foil can be divided into thick foil, single zero foil and double zero foil according to the difference in thickness.① Thick foil: A foil having a thic
can be divided into thick foil, single zero foil and double zero foil according to the difference in thickness.
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 gauge foil", single zero foil is called "medium gauge foil", and double zero foil is called "light gauge foil". Foreign countries sometimes call aluminum foil with a thickness of ≤40ltm as light gauge foil, and aluminum foil with a thickness of> 40btm are collectively called heavy gauge foil.
Aluminum foil can also be divided into rolled aluminum foil and sheet aluminum foil according to its shape. Most of the aluminum foil deep-processed wool is supplied in rolls, and only a few handicraft packaging occasions use sheet aluminum foil.
According to the state, it can be divided into rigid foil, semi-rigid foil and flexible foil.
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.
②Semi-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, composite, electrical materials, etc., use flexible foil.