| abstract |
It has a layer of the resin composition (A), the ethylene content 20-65 mol%, and the layer of the ethylene-vinyl acetate copolymer saponification (B) whose saponification degree of a vinyl acetate unit is 96% or more, and polyolefin () As a multilayer structure in which the layer of C) is disposed; Ethylene-vinyl acetate copolymer saponification (E) whose resin composition (A) is polyolefin (D), 20-65 mol% of ethylene content, the saponification degree of a vinyl acetate unit is 96% or more, and ethylene content 68-98 mol% Ethylene-vinyl acetate copolymer saponification (F1) having 20% or more saponification degree of vinyl acetate unit and / or acid-modified ethylene-vinyl acetate copolymer (F2) having ethylene content of 68 to 98 mol%; Mass ratio [E / (F1 + F2)] of the total amount of vinyl copolymer saponification (E), ethylene-vinyl acetate copolymer saponification (F1), and acid-modified ethylene-vinyl acetate copolymer (F2) is 0.05- 30, the ethylene-vinyl acetate copolymer saponification (E) of 0.1-1.8 micrometers of average particle diameters is disperse | distributed in the matrix of a polyolefin (D), and the thickness of the layer of the resin composition (A) is 50-1000 micrometers, Moreover, the thickness of the layer of polyolefin (C) is 25-1000 micrometers And a multi-layer structure. This provides a multilayer structure having good gas barrier properties after retort treatment and beautiful appearance. |