易拉罐是用铝合金材料制成的,在罐的内壁上常涂一层有机涂料,防止饮料腐蚀易拉罐。但在加工过程中,由于摩擦和碰撞,难免有破损的地方,或涂料没有涂完整.导致饮料与铝质直接接触,使铝溶解其中。有关部门通过对易拉罐包装的52种饮料调查,发现比瓶装饮料的 Cans are made of aluminum alloy material, the inner wall of the tank often coated with a layer of organic coating to prevent beverage corrosion cans. However, during the process, due to friction and collision, it is inevitable that there is a broken place or the coating is not coated completely, causing the beverage to directly contact with the aluminum to dissolve the aluminum therein. The relevant departments through the 52 cans of cans packed in cans were investigated and found to be more than bottled drinks