| 摘要 |
PROBLEM TO BE SOLVED: To surely progress break from an axial break line in opening of a container by forming the axial break line in a container lid as a slit after mounting of the container lid on the container. SOLUTION: After a container lid 200 is mounted on an opening part of a container 120, an axial cutting blade of an axial cutting blade unit is reciprocated so that an axial break line 202 is formed as a split in the outer circumferential face of a tamper evident base 108. A circumferential break line 204 is formed beforehand in the tamper evident base 108 of the container lid 200. The axial break line 202 formed as a split is formed in such a state as extending substantially vertically from the top end positioned in an upper part than the circumferential break line 204 to the bottom of the tamper evident base 108. This constitution allows the break to surely progress from the axial break line in opening of the container in opening of the container. |
