PROBLEM TO BE SOLVED: To provide a polyethylene-based medical container which is excellent in drop bag strength and transparency, is hard to block the inner surface of a medicine chamber, easy to open it, and the outer surface of the medicine chamber having blocking characteristics, being hard to slip between the outer surfaces, easy to be attracted to a suction pad, and to certainly open it, and a laminated film used for it.SOLUTION: The polyethylene-based medical container is formed of a laminated film made of an inner layer containing high density polyethylene as a principal component having a melting point of 128°C or higher, a middle layer containing straight chain low-density polyethylene having density of 0.920 g/cm3 or lower as a principal component of a copolymer of ethylene manufactured by a metallocene-based catalyst and an &alpha-olefin of 4C or more, and an outer layer containing straight chain low-density polyethylene having a melting point of 128°C or lower as a principal component.COPYRIGHT: (C)2008,JPO&INPIT【課題】落袋強度や透明性に優れ、薬室内面はブロッキングし難く開口が容易であり、薬室外面は外面同士が滑りにくく吸着パッドにも吸着しやすいブロッキング特性を有し、確実な開口を行うことが可能なポリエチレン系医療用容器及びそれに用いられる積層フィルムを提供する。【解決手段】融点が128℃以上の高密度ポリエチレンを主成分とする内層と、メタロセン系触媒で製造されたエチレンと炭素数4以上のα-オレフィンとの共重合体で、密度が0.920g/cm3以下の直鎖状低密度ポリエチレンを主成分とする中層と、融点が128℃以下の直鎖状低密度ポリエチレンを主成分とする外層とからなる積層フィルムで形成されていることを特徴とするポリエチレン系医療用容器及びそれに用いられる積層フィルム。【選択図】図1
