| 摘要 |
PROBLEM TO BE SOLVED: To allow an extraction plug to be easily removed from a bottle without using a special tool by attaching an outer ring for removing a restraint ring so that the outer ring can be lifted up around the restraint ring fitted over an outer periphery of an extraction plug body to suppress its expansion. SOLUTION: A plurality of cut grooves 15 are provided at equal intervals on an outer peripheral wall 12 of an extraction plug 12 to be fitted to and engaged with a mouth 3 of a container body 1, and further a restraint ring 8 for suppressing expansion is detachably fitted over an outer periphery of the outer peripheral wall 12. An outer ring 9 for removing the restraint ring 8 is integrally connected to a periphery of the restraint ring 8 through a coupling piece 24 and a plurality of small breaking pieces. At the time of classified recovery of the container body 1, the small breaking pieces are broken to lift up the outer ring 9 and a finger is hooked on the outer ring 9 to pull it up, thereby forcing the restraint ring 8 to be drawn out through the coupling piece 24, so that the outer peripheral wall 12 of the extraction plug 2 can expand and the extraction plug 2 can be easily separated from the container body 1. |
