abstract |
The present invention is an aluminum film layer; an outer resin layer laminated on one surface of the aluminum film layer; and an inner resin layer laminated on the other surface of the aluminum film layer, wherein the inner resin layer includes a polyolefin resin, an ethylene vinyl alcohol copolymer (EVOH) and an ionic polymer resin, and the inner resin layer is 40 to 55% by weight of a polyolefin resin, 40 to 55% by weight of an ethylene vinyl alcohol copolymer (EVOH), and 3.5 to 10% by weight of an ionic polymer resin is formed as a non-stretched film, the ethylene vinyl alcohol copolymer ( EVOH) provides an aluminum pouch film for secondary batteries, characterized in that it is a copolymer represented by Chemical Formula 1. |