| 摘要 |
PROBLEM TO BE SOLVED: To provide a synthetic resin container of bottom structure with decompression absorbing performance that can surely cope with a large internal pressure change while the deformation of a bottom part in the internal pressure change is uniform and gentle in the synthetic resin container having the decompression absorbing performance at the bottom part.SOLUTION: A synthetic resin container includes a bottom part formed with an annular leg part having an outer peripheral wall extended from a body part, a grounding part and an inner peripheral wall, and a raised bottom part located above the grounding part on the inside from the inner peripheral wall of the leg part. The raised bottom part is projected downward from a root with the inner peripheral wall of the leg part, widened in width toward the outer peripheral side from the center part outer edge of the raised bottom part, and formed with a plurality of curved swelling parts formed with a plurality of swelling portions in a radial direction, equally in a circumferentially connected state. |
