| 摘要 |
A biaxially oriented polyester container with a uniformly and sufficiently elongated and thin-walled bottom part having excellent drop strength, improved ESC resistance and reduced weight, and a method of manufacturing the container. The biaxially oriented polyester container of the present invention is characterized in that, when an X-ray diffraction measurement is performed in and near a bottom center area of the biaxially oriented polyester container formed by a double-stage orientation blow molding method, a peak indicative of molecular orientation is observed near a diffraction angle of 2&thetas; = 15 to 30 DEG and an orientation parameter (BO) expressed by the following formula (1) is in the range of 0.5 ≤ BO ≤ 2 in and near the bottom center area: <DF NUM="(1)">orientation parameter (BO) = Ix / Iy </DF> (where Ix indicates a diffraction intensity near the diffraction angle of 2&thetas; = 15 to 30 DEG when the X-ray diffraction measurement is performed in the X-direction, and Iy indicates a diffraction intensity near the diffraction angle of 2&thetas; = 15 to 30 DEG when the X-ray diffraction measurement is performed in a direction orthogonal to that for Ix) <IMAGE>
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