| 摘要 |
PROBLEM TO BE SOLVED: To provide an inner plug of a container having a grip part to generate a grip margin of sufficient size easy to break and sure to grip when a cylindrical part of the inner plug pressed against and engaged with a mouth part of the container is partly broken to be detached from the container in recovering the container. SOLUTION: This inner plug comprises a cylindrical part 4 having a projecting bar 3 to be locked to a recessed bar 2 of a container mouth part, and an upper wall 5. Further, the inner plug comprises a body 9 of the inner plug provided with a pouring cylinder 8 having a tearing part 7 demarcated by a score inside on the upper wall 5, notched parts 12, 12 formed upward at two places of a lower end part 10 of the cylindrical part 4, weakening lines 13, 13 formed on a lower part of the projecting bar 3 in the approaching direction to each other from upper ends 11, 11 of the notched parts 12, 12 along the projecting bar 3, inverted grip parts 14, 14 formed from the weakening lines 13, 13 to the lower end parts, and weakening lines 17, 17 formed upward from tip parts 15, 15 of the weakening lines 13, 13 across a gap 16 and across the projecting bar 3. |
