PROBLEM TO BE SOLVED: To provide a package bag for a prefilled syringe having a high oxygen gas barrier property and an appropriate water vapor barrier property, and having physical properties suitable for packing the prefilled syringe.SOLUTION: The package bag for the prefilled syringe is obtained by manufacturing a bag from a laminated film comprising one or at least two layers of an inorganic oxide vapor deposited film 2 layered on one surface of a biaxially-stretched polyamide resin film 1 and a heat-sealing resin layer 3 layered on the inorganic oxide vapor deposited film.COPYRIGHT: (C)2009,JPO&INPIT【課題】高い酸素ガスバリア性及び好適な水蒸気バリア性を有し、さらにプレフィルドシリンジを包装するのに適した物性を備えたプレフィルドシリンジ用の包装袋を提供する。【解決手段】二軸延伸ポリアミド系樹脂フィルム1の一方の面に、無機酸化物蒸着膜2を1層又は2層以上積層し、さらに該無機酸化物蒸着膜の上に、ヒートシール性樹脂層3を積層した積層フィルムを製袋して得られる、プレフィルドシリンジ用の包装袋。【選択図】図1
