The gas barrier properties thin film formation which consists of aluminum metallic oxide and the compound oxide which

摘要

PROBLEM TO BE SOLVED: To provide a gas-barrier film roll which is excellent in uniformity of transparency and gas-barrier properties, printing processability, lamination processability, and bag-making processability and useful for filling and packaging food and drink, a medicine, cosmetics, electronic parts, etc., a laminate and a packaging bag using the roll.;SOLUTION: In the gas-barrier film roll, a thin gas-barrier film of an inorganic oxide is vapor-deposited on at least one surface of a base material roll film. The gas barrier film roll is taken out of a vacuum deposition apparatus and, after it is rewound in an environment of which the absolute humidity is 0.008-0.018 kg/kg so that the vapor deposition surface is in contact with air at least once in the environment, it is preserved in a constant temperature environment of 30-60°C in a roll state for at least a constant period to uniformly enhance the transparency and gas-barrier properties of the film roll over the whole in the length and width directions of the roll.;COPYRIGHT: (C)2004,JPO