SHEATH MATERIAL FOR AIR SECONDARY BATTERY, MANUFACTURING METHOD OF SHEATH MATERIAL FOR AIR SECONDARY BATTERY AND AIR SECONDARY BATTERY

PROBLEM TO BE SOLVED: To provide a sheath material for an air secondary battery which improves the property of bonding a sheath sheet and an oxygen permeable film and improves oxygen permeability and a moisture barrier property.SOLUTION: A sheath material for an air secondary battery is adopted which comprises: a sheath sheet 2 formed by laminating an outer layer 21, a metal foil layer 22 and an inner layer 23 including a thermoplastic resin film and comprising an oxygen intake opening 12 penetrating the outer layer 21, the metal foil layer 22 and the inner layer 23; and an oxygen permeable film 3 bonded to a peripheral part 12a of the opening closer to the inner layer 23 so as to cover the opening 12. The oxygen permeable film 3 is formed from a porous fluororesin film in which fluororesin particles are coagulated, a primer layer 3c is provided on a joint surface at an outer edge 3a of the oxygen permeable layer 3 and further, an adhesive layer 5 is provided at least between the primer layer 3c and the inner layer 23 of the sheath sheet 2, thereby adhering the oxygen permeable film 3 to the sheath sheet 2.