PROBLEM TO BE SOLVED: To provide a liquid packaging container that has excellent flexibility and transparency, high heat seal strength, high bag breaking strength at room temperature and low temperature, and has low inner layer agglutination, which are important as a medical liquid packaging container.SOLUTION: A liquid packaging container is formed of a laminate including at least three layers of an inner layer (Y), a middle layer and an outer layer (Z), and the middle layer is formed of (X). (X) is a resin composition containing 100 pts.mass of a polypropylene-based resin, 5-95 pts.mass of a specific thermoplastic elastomer, and 10-95 pts.mass of a specific ethylene-α-olefin copolymer. (Y) is a resin composition containing 100 pts.mass of a polypropylene-based resin, and 5-250 pts.mass of a specific thermoplastic elastomer (where resin composition contains no specific ethylene-α-olefin copolymer or contains less than 10 pts.mass of specific ethylene-α-olefin copolymer). (Z) is a resin composition containing 100 pts.mass of a polypropylene-based resin and 0-35 pts.mass of a specific thermoplastic elastomer.SELECTED DRAWING: Figure 1COPYRIGHT: (C)2016,JPO&INPIT【課題】医療用の液体包装容器として重要な、良好な柔軟性、透明性、高いヒートシール強度、常温および低温における高い破袋強度、並びに低い内層膠着性を有する液体包装容器を提供すること。【解決手段】内層(Y)、中間層、外層(Z)を有する少なくとも3層の積層体からなり、中間層が(X)からなる液体包装容器。(X)ポリプロピレン系樹脂100質量部、特定の熱可塑性エラストマー5~95質量部、特定のエチレン-α-オレフィン共重合体10~95質量部を含有する樹脂組成物。(Y)ポリプロピレン系樹脂100質量部、特定の熱可塑性エラストマー5~250質量部を含有する樹脂組成物(但し、特定のエチレン-α-オレフィン共重合体を含有しないか、含有していても10質量部未満である)。(Z)ポリプロピレン系樹脂100質量部、特定の熱可塑性エラストマ0~35質量部を含有する樹脂組成物。【選択図】図1
