The shape of aluminium foil
According to the shape of aluminum foil can be divided into rolled aluminum foil and flake aluminum foil.Aluminum foil deep processing wool most of the roll-like supply, only a few handicraft packaging occasions to use sheet aluminum foil.
Aluminum foil can be divided into hard foil, semi - hard foil and soft foil.
(1) hard foil: rolling without softening treatment (annealing) aluminum foil, without degreasing treatment, the surface of the pu has residual shantou.Therefore, the hard foil before printing, laminating, coating must be degreased, if used for forming processing can be used directly.
(2) semi-hard foil: aluminum foil hardness (or strength) in the hard foil and soft foil between the aluminum foil, usually used for forming processing.
(3) soft foil: rolled after full annealing and soft aluminum foil, soft material, no residual oil surface.Soft foils are used in most applications such as packaging, composites, electrical materials, etc.