| abstract |
A pouch suitable for maintaining the gas barrier property of a film material at a high level even when subjected to physical stress is provided. In a pouch provided with a film material as a partition wall that separates the inside and the outside containing the contents, the film material comprises at least one of the base material (X), the layer (Y), and the layer (Z), respectively. Having a multilayer structure. The layer (Y) contains an aluminum atom, the layer (Z) contains a polymer (E) containing a monomer unit having a phosphorus atom, and at least one layer (Y) and the layer (Z) are adjacent to each other. Are stacked. [Selection] Figure 1 |