Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
195 words
An injection stretch blow container comprising 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 µm; vertical section or longitudinal section of the body wall of said container) having 0.001 to 1 µm 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) (L i / h i ), wherein L i represents a length of the overlapped portion of adjacent layers of said saponification product of said ethylene-vinyl acetate copolymer, and h i represents a distance between adjacent layers of said saponification product of said ethylene-vinyl acetate copolymer.
Claim 2
Dependent Claim
195 words
An injection stretch blow container comprising 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 µm; vertical section or longitudinal section of the body wall of said container) having 0.001 to 1 µm 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) (L i / h i ), wherein L i represents a length of the overlapped portion of adjacent layers of said saponification product of said ethylene-vinyl acetate copolymer, and h i represents a distance between adjacent layers of said saponification product of said ethylene-vinyl acetate copolymer.
Claim 3
Dependent Claim
38 words
A container according to Claim 1, wherein said saponification product of said ethylene-vinyl acetate copolymer contains 25 to 60 mol% of ethylene vinyl units and the degree of saponification of acetic vinyl unit is at least 96 %.
Claim 4
Dependent Claim
38 words
A container according to Claim 1, wherein said saponification product of said ethylene-vinyl acetate copolymer contains 37 to 50 mol% of ethylene vinyl units and the degree of saponification of acetic vinyl unit is at least 96 %.
Claim 5
Dependent Claim
17 words
A container according to any of Claims 1 to 3, wherein said saturated polyester is polyethylene terephthalate.
Claim 6
Dependent Claim
34 words
A container according to any of Claims 1 to 3, wherein said saturated polyester is poly (ethylene terephthalate/isophthalate) which contains 2 to 12 mol% of isophthalic acid in a monomer of an acid component.
Claim 7
Dependent Claim
113 words
A container according to any of Claims 1 to 5, wherein said container has 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 µm; vertical section or longitudinal section of the body wall of said container) has 0.001 to 0.2 µm in average thickness and at least 10 in average aspect ratio, and the laminated structural index is at least 15.
Claim 8
Dependent Claim
21 words
A container according to any of Claims 1 to 6, wherein the draw ratio of stretch blow is 5 to 20.