Patent ID: 8658278

Claim:
A gas barrier laminated film comprising a thermoplastic polymer film, an inorganic thin film formed on at least one side of the thermoplastic polymer film, and a resin layer which is obtained by applying an aqueous dispersion containing an ethylene-unsaturated carboxylic acid copolymer (b) and inorganic particles (c), to a surface of the inorganic thin film, wherein an average particle diameter of the inorganic particles (c) is 0.5 to 25 nm and the inorganic particles (c) are silica particles having at least one silanol group, wherein when 20% gradient printing is performed on the surface of a resin layer of a laminated film in gravure printing at a wet thickness of 2.9 g/m 2 and a film travel speed of 200 m/min, the circularity is less than 1.5, there is no dislocation of halftone dots, percent water vapor permeation is 0.05 to 0.4 g/m 2 /24 hr and oxygen permeability is 0.5 to 6 cc/m 2 /24 hr/MPa.