To prevent effectively alcohol from being dissipated, store a package in a sealed state in a storage container, and unseal the package easily with small pressure at a desired time by laminating a heat-seal layer formed of a vinylidene chloride resin to base material layers at least one layer of which is formed with an aluminum foil.

In this packaging film 1, a heat-seal layer 5 formed of a vinylidene chloride resin is laminated to base material layers 4 at least one layer of which is formed with an aluminum foil. Since a heat-sealed part A includes the vinylidene chloride resin in such a manner, impermeability to alcohol is exhibited. It is preferable that a heat-sealing temperature for forming the heat- sealed part A is in a range of 120-200°C. If it is less than 120°C, there is a case where the heat-seal layer 5 may not be reliably heat-sealed and, as a result, a sufficient heat-seal strength can not be obtained. Further, if it exceeds 200°C, there may be a case where the heat-sealed part A is broken due to the thermal deformation or thermal melting of a synthetic resin film forming the base material layers.