Gas barrier laminates and packaging bags

Abstract

To provide a gas barrier laminate that primarily consists of polyolefin-based films and can maintain high gas barrier properties even after bending. [Solution] The structure is formed by laminating a base layer containing polyolefin, an undercoat layer, an inorganic oxide layer, a gas barrier adhesive layer, and a resin layer containing polyolefin in this order, wherein the polyolefin contained in the base layer is polyethylene, the resin layer is a sealant layer, the heat fusion temperature difference between the base layer and the sealant layer is 10°C or more, the undercoat layer is a layer formed using an acrylic urethane resin or an anchor coating agent containing a component that reacts to form an acrylic urethane resin, and the oxygen permeability of the gas barrier adhesive layer is 100 cc / m 2 A gas barrier laminate with a temperature of less than 1 day·atm.

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