| 摘要 |
Provided is a bottle (1) including a bottom part (14) having a bottom wall part (19). The bottom wall part (19) includes a grounding part (18) located at the outer circumferential edge thereof, a standing peripheral wall part (21) connecting to the grounding part (18) from a radial inner side of the bottle and extending upward, an annular movable wall part (22) projecting from an upper end of the standing peripheral wall part (21) toward the radial inner side of the bottle, and a depression peripheral wall part (23) extending upward from an inner end of the movable wall part (22) in a radial direction of the bottle. The movable wall part (22) is disposed to freely pivot around a connection part (25) connected with the standing peripheral wall part (21) so as to move the depression peripheral wall part (23) in an upward direction, and the depression peripheral wall part (23) is formed to have multiple stages. |
