| abstract |
[Problem] To provide a polyester container which is excellent in gas barrier properties and flavor retention, and does not whiten even when stored for a long period of time and has excellent transparency. SOLUTION: Polyester (A) comprises 80 to 98% by mass, a diamine unit containing at least 70 mol% of a metaxylylenediamine unit and a dicarboxylic acid unit containing at least 70 mol% of an α, ω-aliphatic dicarboxylic acid unit. Directly having a single layer having a layer made of a polyester-based resin composition obtained by mixing at least two components of 20 to 2% by mass of polyamide (B) obtained by condensation, or having a multilayer structure in which one or more layers are laminated A polyester container obtained by a blow molding method, wherein polyamide (B) is dispersed in polyester (A), and is observed when the surface of the container body is observed by TEM at a magnification of 10,000 times. The average length of dispersed particles in the major axis direction is 0.6 microns or less, and the average length in the major axis direction is within the range of 1 to 2.2 times the average length in the minor axis direction. A polyester-based container, characterized in that [Selection figure] None |