| 摘要 |
PROBLEM TO BE SOLVED: To provide the cap device of a container capable of being mounted readily and not coming off easily after it is mounted once. SOLUTION: A projection portion 14 is formed at the hole inner portion of an opening 13 defined in a container 11, and a joint means 30 to fit in with the projection portion 14 is disposed within the bottom surface 20c of a cap 20, thereby permitting the projection portion 14 and the cap 20 to fit in with each other via the joint means 30 at the time of closing the opening 13 with the cap 20. |
