Aluminum Foil Is Classified By Shape

Aluminum foil can be divided into rolled aluminum foil and sheet aluminum foil according to their shape. Most of the aluminum foil deep processing raw materials are supplied in rolls, and only a few handicraft packaging occasions use sheet aluminum foil.
Aluminum foil can be divided into hard foil, semi hard foil, and soft foil according to their state.
① Hard foil: Aluminum foil that has not been softened (annealed) after rolling, and when not degreased, there may be residue on the surface. Therefore, hard foil must undergo degreasing treatment before printing, lamination, and coating. If used for forming processing, it can be directly used.
② Semi hard foil: Aluminum foil with a hardness (or strength) between hard and soft foils, usually used for forming and processing.
③ Soft foil: Aluminum foil that has been fully annealed and softened after rolling, with a soft material and no residual oil on the surface. Most application areas, such as packaging, composite, electrical materials, etc., use soft foil.