| 摘要 |
PROBLEM TO BE SOLVED: To provide a vessel having a segregation cap which can consistently and reliably unscrew and open an outer cap by preventing an inner plug body from being jointly turned when the outer cap is turned. SOLUTION: In the vessel in which an assembled cylinder 11 of the inner plug body 10 having a spout and provided with a thin-walled weakening line 25 for removing segregation is assembled with an outer circumference of a mouth cylinder 2 of a vessel body 1 by the undercut coupling, and the outer cap 30 is screwed to the inner plug body 10, a locking part 5 for preventing the inner plug body 10 from being jointly turned is provided between an inner circumferential surface of the mouth cylinder 2 of the vessel body 1 and an outer circumferential surface of a seal cylinder 21 which is provided perpendicularly inward of the assembled cylinder 11 of the inner plug body 10 and tightly fitted to the mouth cylinder 2. |
