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Abstract

[Problems] To provide a multilayered structure which eliminates the need of providing any particular adhesive layer, enables the ethylene/vinyl alcohol copolymer to exhibit excellent oxygen-barrier property to a sufficient degree, and can be effectively used even when a polyolefin resin is used as the inner and outer layers.[Means for Solution] A multilayered structure having an adhesive intermediate layer of a blend of an ethylene/vinyl alcohol copolymer (A) and a maleic anhydride-modified olefin resin (B) between an inner layer and an outer layer, the adhesive intermediate layer containing the ethylene/vinyl alcohol copolymer (A) and the maleic anhydride-modified olefin resin (B) at a weight ratio of 4:6 to 8:2, the phase structure of the adhesive intermediate layer being a sea-island structure with the maleic anhydride-modified olefin resin (B) as the sea or being a bicontinuous phase, and the adhesive intermediate layer having a standard deviation of not less than 65 when a contrast profile of the ethylene/vinyl alcohol copolymer (A) and the maleic anhydride-modified olefin resin (B) in the adhesive intermediate layer near the interface thereof is numerically expressed on a scanning electron microphotograph of the cross section of the multilayered structure in the direction of thickness by using an image analysis software.

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