MULTI-LAYER CONTAINER

摘要

PROBLEM TO BE SOLVED: To provide a multi-layer container which is superior in a gas-barrier characteristic and in the shaping stability of an ethylene-vinyl acetate copolymer saponification object at the time of parison shaping.

SOLUTION: This multi-layer container comprises both outside layers which are provided with a thermoplastic polyester resin layer and an intermediate layer containing an ethylene-vinyl acetate copolymer saponification object (A) which satisfies the following formula (1): Formula (1) is 14750×Mw-0.75≤ECD, wherein ECD is the standard deviation of ethylene composition distribution width when the re-acetylation product of ethylene-vinyl acetate copolymer saponification product is measured with a liquid chromatography equipped with an evaporation type light scattering detector and MW is the weight average molecular weight of the re-acetylation product of ethylene-acetate vinyl copolymer saponification product measured with GPC using polystyrene as a reference and tetrahydrofuran as a solvent.

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