To improve gas barrier properties, and to reduce shrinkage ratio in molding by incorporating a resin compsn. layer consisting of each specified wt.% of saponified product of ethylene-vinyl ester copolymer and olefin-unsatd. dicarboxylic anhydride-unsatd. carboxylate or vinyl ester copolymer.

Ratio of compsn. of each ingredient is in such a way in case of two components that the content of a saponified product of ethylene-vinyl ester copolymer (a) is 75-97wt.%, pref. 80-95wt.%, more pref. 85-90wt.% and the content of olefin-unsatd. dicarboxylic anhydride-unsatd. carboxylate or vinyl ester copolymer (b) is 3-25wt.%, pref. 5-20wt.%, more pref. 10-15wt.%. When the content of (b) is at most 3wt.%, the crossed part of the side face part and the bottom face part and corner parts of a thermoformed container obtd. become too thin and when the content of (b) is at least 25wt.%, gas barrier properties decrease and shrinkage ratio on molding increase.