①Thick foil ("heavy gaugefoil"): foil with a thickness of 0.1~0.2mm.
②Single zero foil ("medium gauge foil"): foil with a thickness of 0.01mm and less than 0.1mm/.
③Double-zero foil ("light gauge foil"): The so-called double-zero foil is a foil with two zeros after the decimal point when its thickness is measured in mm. It is usually an aluminum foil with a thickness less than 0.01, that is, an aluminum foil with a thickness of 0.005~0.009mm. . In foreign countries, aluminum foil with thickness ≤40ltm is sometimes called "light gauge foil", while aluminum foil with thickness >40btm is collectively called "heavy gauge foil".
Aluminum foil can be divided into roll aluminum foil and sheet aluminum foil according to its shape. Aluminum foil deep processing wool is mostly supplied in roll form, and sheet aluminum foil is only used in a few handicraft packaging situations.
Aluminum foil can be divided into hard foil, semi-hard foil and soft foil according to the state.
① Hard foil: Aluminum foil that has not been softened (annealed) after rolling, and has no residue on the surface without degreasing. Therefore, rigid foil must be degreased before printing, lamination, and coating. If it is used for forming processing, it can be used directly.
② Semi-hard foil: Aluminum foil whose hardness (or strength) is between hard foil and soft foil, usually used for forming processing.
③Soft foil: Aluminum foil that has been fully annealed and softened after rolling. The material is soft and there is no residual oil on the surface. Most application areas such as packaging, lamination, electrical materials, etc. use flexible foils.
Understand the properties and applications of thick, single and double zero foils, rolls and sheets, rigid, semi-rigid and soft foils"