High-transparency high-barrier composite film

The utility model discloses a high-transparency high-barrier-property composite film which comprises a first polypropylene film layer, an ink layer, a first glue layer, a second polypropylene film layer, a second glue layer and a casting polypropylene film layer which are sequentially arranged, double surfaces of a polypropylene film of the second polypropylene film layer are subjected to corona treatment, one corona treatment surface of the second polypropylene film layer is provided with aluminum oxide subjected to vacuum evaporation, and the surface, provided with the aluminum oxide, of the second polypropylene film layer is bonded with the ink layer through the first glue layer; and the combined surface of the casting polypropylene film layer and the second glue layer is a corona treatment surface. According to the high-transparency and high-barrier-property composite film disclosed by the utility model, a plurality of layers of polypropylene films are compounded, so that the high-transparency and high-ba