Bacterial bed cultivation bag film and fungus bed cultivation bag

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