Patent ID: 6686011
Filing Date: 2004-02-03
Classification: B29B,B29C,B29K,B32B,B65D,Y10T

Abstract:
A container comprising:at least one layer comprising a thermoplastic polyester, and at least one layer comprising a mixture of two ethylene-vinyl alcohol copolymers B1 and B2, wherein said mixture of B1 and B2 has a morphology in which particles of B2 are dispersed in B1, said mixture of B1 and B2 exhibits at least two crystal fusion peaks in its differential scanning calorimetry (DSC) and satisfies the following formulae (1) to (7): 60/40&lE;WB1/WB2&lE;90/10â€ƒâ€ƒ(1) 25&lE;ETB1&lE;40â€ƒâ€ƒ(2) 99&lE;SDB1â€ƒâ€ƒ(3) 35&lE;ETB2&lE;48â€ƒâ€ƒ(4) 92&lE;SDB2&lE;99â€ƒâ€ƒ(5) 10&lE;ETB2âˆ’ETB1&lE;23â€ƒâ€ƒ(6) 1&lE;SDB1âˆ’SDB2&lE;8â€ƒâ€ƒ(7) and,WB1 is the amount by weight of B1 in the mixture, WB2 is the amount by weight of B2 in the mixture, ETB1 is the mol % ethylene in B1, ETB2 is the mol % ethylene in B2, SDB1 is the % saponification of B1, and SDB2 is the % saponification of B2.