PROBLEM TO BE SOLVED: To provide a medicine packaging film which has a three-layered structure, is preservable under a high temperature, and can be easily torn.SOLUTION: A medicine packaging multi-layered film comprises three layers including: an outer layer made of linear low-density polyethylene having a density of 0.910 to 0.930 g/cm3 and fluidity of 0.5 to 0.930 g/10 min at 190°C an intermediate layer which is made of the linear low-density polyethylene having a density of 0.910 to 0.930 g/cm3 and fluidity of 0.5 to 0.930 g/10 min at 190°C and cyclic polyethylene having a density of 1.020 g/cm3 and a glass transition temperature of 100°C or more and includes the cyclic polyethylene at a ratio of 40% or more and less than 60% and an inner layer made of a low-density polyethylene having a density of 0.910 to 0.930 g/cm3 or the linear low-density polyethylene having a density of 0.910 to 0.930 g/cm3 and fluidity of 0.5 to 0.930 g/10 min at 190°C.SELECTED DRAWING: NoneCOPYRIGHT: (C)2017,JPO&INPIT【課題】本発明は、高温下でも保存可能な切り裂き容易な3層構造の医薬品包装用フィルムを提供すること。【解決手段】密度が0.910~0.930g/cm3で、190℃での流動性が0.5~0.930g/10minの直鎖状低密度ポリエチレンからなる外層と、密度が0.910~0.930g/cm3で、190℃での流動性が0.5~0.930g/10minの直鎖状低密度ポリエチレンと密度1.020g/cm3でガラス転移温度が100℃以上である環状ポリエチレンからなり、該環状ポリエチレンを40%以上60%未満の割合で含む中間層と、密度が0.910~0.930g/cm3の低密度ポリエチレンまたは密度が0.910~0.930g/cm3で、190℃での流動性が0.5~0.930g/10minの直鎖状低密度ポリエチレンからなる内層の三層から構成される医薬品包装用多層フィルムとする。【選択図】 なし
