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 small number of handicraft packaging situations. Aluminum foil can be divided into hard foil, semi-hard foil and soft foil according to the situation. Hard foil: aluminum foil that has not been softened (annealed) after rolling, and has no residue on the surface without degreasing.
Therefore, hard foil must be degreased before printing, laminating, and coating. If it is used for forming processing, it can be used directly. Semi-hard foil: The hardness (or strength) of aluminum foil is between hard foil and soft foil. Aluminum foil, generally used for forming processing, soft 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, composites, electrical materials, etc., use soft foils.
Aluminum foil can be divided into one-sided light aluminum foil and double-sided light aluminum foil according to the appearance. Single-sided light aluminum foil: double-rolled aluminum foil. After being rolled, one side is bright and the other side is black. Such aluminum foil is called one-sided light aluminum foil. The thickness of one-sided aluminum foil is generally no more than that of double-sided aluminum foil: a single rolled aluminum foil, with both sides in contact with the roller. Due to the different surface roughness of the roller, the two sides of the aluminum foil are divided into mirror double-sided aluminum foil and ordinary double-sided aluminum foil. .
The thickness of double-sided aluminum foil is generally not less than that of aluminum foil. According to processing conditions, it can be divided into plain foil, embossed foil, composite foil, coated foil, colored aluminum foil and printed aluminum foil. Plain foil: Aluminum foil that has not undergone any other processing after rolling, also called light foil. Embossed foil: Aluminum foil with various patterns embossed on the surface. Composite foil: Composite aluminum foil composed of aluminum foil, paper, plastic film, and cardboard laminated together.
