GAS BARRIER FILM, PACKAGING MATERIAL USING IT AND PACKAGE

摘要

PROBLEM TO BE SOLVED: To provide a transparent packaging material capable of keeping high oxygen gas barrier properties over a long period of time. SOLUTION: The gas barrier film is constituted by laminating at least a gas barrier resin layer (b) on the outside of an oxygen absorbent resin layer (a) and also laminating a heat-sealable thermoplastic resin layer (c) on the inside of the oxygen absorbent resin layer (a), and keeps an oxygen permeability of 1 ml/m2×day×MPa (0.1cc/m2×day×atm) at least for 180 days under a 23°C/50% RH condition. COPYRIGHT: (C)2008,JPO&INPIT