▎ 摘　　要

NOVELTY - Preparing antibacterial aluminum foil material comprises (i) coating adhesive on the kraft paper, laminating it with aluminum foil, and drying at 65-75℃ to obtain the kraft paper base layer, adhesive layer and aluminum foil layer, (2) coating hydrophobic antibacterial agent on the side of the aluminum foil layer away from the kraft paper base layer, drying at 55-65℃ to obtain the hydrophobic antibacterial layer. The preparation method of the hydrophobic antibacterial agent comprises mixing 50-70 pts. wt. antibacterial agent and 50-60 pts. wt. hydrophobic agent, and dispersing in 20-30 pts. wt. organic solvent, adding 20 pts. wt. deionized water, and uniformly mixing to obtain the hydrophobic antibacterial agent. The antibacterial agent is silane-modified graphene attached to nano zinc oxide. The hydrophobic agent is silane-modified polyurethane. USE - The material is useful in aluminum foil lunch box (claimed), which is useful in catering, food and medicine. ADVANTAGE - The method provides antibacterial aluminum foil material with good heat insulation effect. The protective aluminum foil is not easy to deform, and avoids heat exchange to certain degree when used as lunch box. The kraft paper substrate layer is adhered with the aluminum foil layer through the adhesive layer, and the other side of the aluminum foil layer is provided with antibacterial hydrophobic layer. DETAILED DESCRIPTION - INDEPENDENT CLAIMS are also included for: antibacterial aluminum foil prepared by the method; and aluminum foil lunch box prepared by adopting the antibacterial aluminum foil.