▎ 摘　　要

NOVELTY - A secondary battery pouch film comprises a sealant layer, an adhesive layer (L1) formed on the sealant layer, a primer layer formed on the adhesive layer (L1), a core layer formed on the primer layer, an adhesive layer (L2) formed on the core layer and a surface layer formed on the adhesive layer (L2). At least one layer from the sealant layer, the primer layer, the adhesive layers (L1) and (L2) and the surface layer includes graphene. USE - Pouch film used for packaging secondary battery such as lithium-ion secondary battery. ADVANTAGE - The pouch film has excellent mechanical strength, barrier property of moisture and oxygen, chemical resistance, flame retardance and impact resistance, and reduced usage amount of aluminum. The graphene increases durability, and reduces gas permeability and moisture permeability of the secondary battery pouch film. Even in a case where only one of the sealant layer, the primer layer, the inner resin layer, the adhesive layers (L1)-(L3), and the surface layer includes graphene, the desired effects can be exhibited, and even in a case where only two or all of the layers includes graphene, the desired effects can be exhibited. DETAILED DESCRIPTION - An INDEPENDENT CLAIM is included for manufacture of the secondary battery pouch film, which involves forming each of the sealant layer, core layer, and surface layer and laminating the sealant layer, the core layer, and the surface layer in order. The adhesive layer (L1) and a primer layer are included between the sealant layer and the core layer, and the adhesive layer (L2) is included between the core layer and the surface layer.