GAS-BARRIER FILM AND PACKAGING MATERIAL USING THE FILM

摘要

PROBLEM TO BE SOLVED: To provide a gas-barrier film which develops stable gas-barrier properties even in an atmosphere of high humidity and is excellent in adhesion between a gas-barrier layer and a substrate film and in appearance and a packaging material using the film. SOLUTION: The gas-barrier film is composed of the substrate film (A) made of a thermoplastic resin film, an anchoring agent layer (B) formed on at least one side of the substrate film (A), and a barrier layer (C) formed on the anchoring agent layer (B). The anchoring agent layer (B) contains an anchoring agent and a silane coupling agent. The oxygen transmittance of the film measured continuously for 6 hr at 30°C under 70% RH is 100 ml/(m224 hr MPa) or below. COPYRIGHT: (C)2005,JPO&NCIPI