Easy-tear cover aluminium foil for food package and preparation technology of easy-tear cover aluminium foil

The invention belongs to the technical field of a packaging material, and relates to an easy-tear cover aluminium foil for food package and preparation technology of the easy-tear cover aluminium foil. The easy-tear cover aluminium foil comprises an aluminium foil layer, a first functional layer arranged on an upper surface of the aluminium foil layer, a second functional layer arranged on a lower surface of the aluminium foil layer, and a third functional layer arranged on a lower surface of the second functional layer. The second functional layer is coated with a coating liquid I, the first functional layer is coated with a coating liquid III, and the main component of the coating liquid I is an acrylic resin. The third functional layer is coated with a coating liquid II, and the main component of the coating liquid II is a polyester resin. The technology allows the function of each functional layer to be achieved according to the characteristics of each functional layer. The provided easy-tear cover aluminium foil is good in leakproofness, firm to connect, smooth to peel, and resistant to corrosion, and the use safety is ensured.