| 摘要 |
A packaging material to be thermally welded to a package, which is characterized by comprising a gas barrier film (12), an intermediate layer (16) that is bonded to the gas barrier film by means of a first adhesive layer (14), and a thermal welding layer (20) that is bonded to the intermediate layer by means of a second adhesive layer (18). This packaging material is also characterized in that: the gas barrier film has a laminated structure wherein one or more combinations of one inorganic layer (28) that has gas barrier properties and one organic layer (26) that serves as a base layer for the inorganic layer are formed on a supporting body (24) so that an organic layer (26) forms the outermost layer; the glass transition temperature of the organic layer is higher than the glass transition temperatures of the intermediate layer and the supporting body of the gas barrier film; and the glass transition temperatures of the intermediate layer and the supporting body of the gas barrier film are higher than the glass transition temperature of the thermal welding layer. |
