| abstract |
(57) Abstract: [PROBLEMS] To provide a flexible film suitable for packaging a drug solution in which extractable substances from the film are strictly suppressed. A sealing layer, a core layer of polymeric material that imparts flexibility to the film, an outer layer of flexible polyester or polyester copolymer, and ethylene / ester copolymer or modified ethylene. In a multilayer film consisting of an intermediate adhesive layer of a / ester copolymer, an improved film characterized in that the core layer contains an alkali metal carbonate. |