POUCH FILM LAMINATE, POUCH-TYPE BATTERY CASE, AND POUCH-TYPE SECONDARY BATTERY

The present disclosure relates to a pouch film laminate comprising a base layer, a gas barrier layer, and a sealant layer, which are sequentially laminated, wherein the sealant layer comprises a first sealant layer disposed adjacent to the gas barrier layer and a second sealant layer laminated on the first sealant layer, the second sealant layer includes polypropylene (PP) modified with siloxane, and the polypropylene (PP) modified with siloxane has a weight average molecular weight of 100,000 to 500,000.