| 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 a maleic anhydride polypropylene resin, and the inner water The backing layer is formed of an unstretched film comprising 40 to 55% by weight of polyolefin resin, 40 to 55% by weight of ethylenevinyl alcohol copolymer (EVOH), and 3.5 to 10% by weight of maleic anhydride polypropylene resin, , The ethylene vinyl alcohol copolymer (EVOH) provides an aluminum pouch film for a secondary battery, characterized in that the copolymer represented by the formula (1). |