| 摘要 |
PROBLEM TO BE SOLVED: To facilitate a removal of flange installed at the lower end of a synthetic resin container for performing a classified recovery in disposing of the container. SOLUTION: A second fitting cylinder 24 raised up from a bottom plate is fitted to an outer surface of a first fitting cylinder 8 vertically suspended down from the lower surface of the bottom wall of the container main body, the flange is installed at the bottom part of the container main body, a shape of inner surface of the first fitting cylinder is formed as an ellipse, a guide plate 26 having upper surfaces at both ends applied as lower inward slant surfaces 25, 25 is raised from the bottom plate below the ellipse, the lower ends of these slant surfaces are arranged near the inner edges of lower ends at both ends at the inner surface of the first fitting cylinder 8 in its long diameter direction.
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