PROBLEM TO BE SOLVED: To provide a coextruded multilayer film which is made excellent in low-temperature pinhole resistance and transparency, the delamination of which and the blocking of which with polypropylene-made contents are not caused, even when treated at high temperature, on which high-pressure steam sterilization can be performed, and to provide a package body of the coextruded multilayer film.SOLUTION: The coextruded multilayer film is composed of an outer layer, an intermediate layer, an inner layer 1 and another inner layer 2 in this order. As the intermediate layer, at least one adhesive resin layer based on high-density polyethylene, which has 0.925 or higher density and 125°C or higher melting point, or straight-chain low-density polyethylene. The inner layer 1 is a straight-chain low-density polyethylene resin layer having 0.910-0.930 density. The inner layer 2 is another resin layer of high-density polyethylene having 0.930-0.955 density or straight-chain low-density polyethylene.SELECTED DRAWING: NoneCOPYRIGHT: (C)2016,JPO&INPIT【課題】 低温耐ピンホール性及び透明性が良好であり、高温処理においてもフィルムのデラミネーション、およびポリプロピレン製内容物とのブロッキングが発生しない高圧蒸気滅菌が可能な共押出多層フィルム、およびその包装体の提供。【解決手段】 外層、中間層、内層1、内層2の順で構成する多層フィルムにおいて、中間層に密度0.925以上かつ融点125℃以上の高密度ポリエチレン又は直鎖状低密度ポリエチレンをベースとした接着樹脂層を少なくとも1層配し、内層1が密度0.910以上0.930以下の直鎖状低密度ポリエチレン樹脂層であり、内層2が密度0.930以上0.955以下の高密度ポリエチレンまたは直鎖状低密度ポリエチレンの樹脂層であることを特徴とする共押出多層フィルム。【選択図】 なし
