The inkjet cover film consists of an aluminum film with a thickness of 5-30 μm, which is uncoated on the first side, or coated with a protective lacquer with an applied amount of 0.1-10 g/m2, or covered with a surface weight of 17-60g/m2 paper or covered with polyester film with a thickness of 5-15μm. On the other hand, the second side of the aluminum film for sealing to the bottom part...