| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a synthetic resin container which is excellent in barrier properties and is free from white turbidity in a non-stretched section even when being stored for a long period of time. <P>SOLUTION: A PET bottle has a base material layer 11 made of PET and a barrier layer 12 which is lower in gas permeability than the base material layer 11. The barrier layer 12 is made of a barrier material consisting of m-xylene group-containing polyamide. In this case, the barrier material is incorporated with an amorphous polyamide having m-xylene-isophthalamide structure and hexamethylene-isophthalamide structure. The amorphous polyamide is constituted by using a copolyamide consisting of a copolymer (MXDI) of m-xylenediamine and isophthalic acid, and a copolymer (6I) of hexamethylenediamine and isophthalic acid. The rate of content of the amorphous polyamide in the barrier layer 12 is at least 15 wt.% and not more than 25 wt.%. <P>COPYRIGHT: (C)2010,JPO&INPIT |
