四国化工株式会社;NISHIKAWA SHOJI KK;日本ポリエチレン株式会社;SHIKOKU KAKO KK;西川商事株式会社;JAPAN POLYETHYLENE CORP
发明人:
AMAMIYA TAKAHIRO,雨宮 隆浩
申请号：
JP2016119112
公开号：
JP2017222090A
申请日:
2016.06.15
申请国别(地区):
JP
年份:
2017
代理人:
摘要：
PROBLEM TO BE SOLVED: To provide a film for mushroom bed cultivation bags that is excellent in tearability in a longitudinal direction and a lateral direction and pinhole resistance and maintains the excellent tearability in the longitudinal direction and the lateral direction even after a heat treatment, and a mushroom bed cultivation bag.SOLUTION: A multilayer film has an outer layer (A) containing high density polyethylene having density of 0.945 to 0.966 g/cm(a1), an intermediate layer (B) containing 20 to 90 wt.% of a cyclic olefin-based resin having glass transition point of 105°C or more (b1) and another polyethylene-based resin, and an inner layer (C) containing high density polyethylene having density of 0.945 to 0.966 g/cm(c1) in the stated order (optionally, each layer further containing an ethylene α-olefin copolymer) and is used as a film for mushroom bed cultivation bags.SELECTED DRAWING: Figure 1【課題】縦方向及び横方向の引裂性、耐突き刺し性に優れ、熱処理後も、縦方向及び横方向の引裂性に優れる菌床栽培袋用フィルム及び菌床栽培袋を提供する。【解決手段】密度が０．９４５～０．９６６ｇ／ｃｍ３の高密度ポリエチレン（ａ１）を含む外層（Ａ）、ガラス転移点が１０５℃以上の環状オレフィン系樹脂（ｂ１）を２０～９０重量％と他のポリエチレン系樹脂とを含む中間層（Ｂ）及び密度が０．９４５～０．９６６ｇ／ｃｍ３の高密度ポリエチレン（ｃ１）を含む内層（Ｃ）を、順に有する（各層は、さらに場合によりエチレン・α－オレフィン共重合体を含む）ことを特徴とする、多層フィルムを菌床栽培袋用フィルムとする。【選択図】図１
