INJECTION STRETCH BLOW CONTAINER

摘要

: An injection stretch blow container consisting of a combination of 97 to 70 parts by weight of saturated polyester and 3 to 30 parts by weight of a saponification product of an ethylene-vinyl acetate copolymer, said container having many areas at least at the body wall portion of said container in each of which areas substantially two-dimensional thin layers of said saponification product of said ethylene-vinyl acetate copolymer are laminated in parallel to the wall surface of said container in a matrix of saturated polyester, said saponification product of said ethylene-vinyl acetate copolymer in said area (20 x 20 .mu.m; vertical section or longitudinal section of the body wall of said container) having 0.001 to 1 .mu.m in average thickness and at least 5 in average aspect ratio and the laminated structural index represented by the following formula being at least 5: Laminated structural index I - (1 / n) (Li / hi), wherein Li represents a length of the overlapped portion of adjacent layers of the saponification product of the ethylene vinyl acetate copolymer, and hi represents a distance between adjacent layers of saponification product of ethylene-vinyl acetate copolymer. This container has a high gas-barrier quality and is useful as a bottle for carbonated beverage or the like.