| 摘要 |
PROBLEM TO BE SOLVED: To provide a gas barrier stretched film having high oxygen gas barrier properties and excellent strength, and also to provide a gas barrier packaging material using it and a gas barrier package. SOLUTION: The gas barrier stretched film is obtained by stretching a laminated film, which has at least four layers, that is, a polyamide resin layer, a first gas barrier resin layer, an oxygen absorbing resin layer and a second gas barrier resin layer, in a biaxial orthogonal direction in a magnification of 2.5-4.5 times, and keeps the state in which thrust strength is 196 (20 Kgf/mm)-500 N/mm, and oxygen permeability under a 23°C/50% RH condition is 1 ml/m<SP>2</SP>×day×MPa (0.1 cc/m<SP>2</SP>×day×atm) or below, at least for 60 days. COPYRIGHT: (C)2008,JPO&INPIT
|
