The present invention belongs to the field of
aluminum foil production and
processing, and discloses a preparation method for producing semi-rigid antibacterial
aluminum foil from a short-process cast-rolled billet, which sequentially undergoes the processes of
smelting,
casting and rolling, cold rolling, homogenization annealing, intermediate rolling, longitudinal shearing, finishing rolling, foil rolling, coiling, rolling products, slitting, and furnace annealing. Compared with existing aluminum
alloy materials, it has excellent
deep drawing performance, good deformation ability, high
bursting strength, excellent
antibacterial effect, high cleanliness, and short process. After forming, it has certain
structural rigidity and is not easy to deform. At the same time, through innovative heat treatment control technology, it effectively reduces the thickness of the
oxide film on the surface of the cast-rolled billet aluminum and the surface residues, and can better disperse and precipitate the antibacterial second phase in the aluminum
alloy matrix. It has the advantages of good antibacterial, clean surface, and controllable
wetting angle. It meets the technical requirements of semi-rigid, high cleanliness, and antibacterial
aluminum foil. It has important practical value in the production of
food packaging industry.