| 摘要 |
PROBLEM TO BE SOLVED: To prevent surely a finger from touching a cut edge of a broken score in unsealing of a cap in a simply unsealable cap having a ring tab. SOLUTION: A finger movement-preventing protrusion which prevents a finger from moving to a cut edge at the time of unsealing a stopper is provided at a portion above a ring tab 6. The finger movement-preventing protrusion may be formed as protrusions 81 , 82 angularly protruding from both sides of an upper end of the ring tab 6, or may be an extending portion formed in such a manner that the upper part of the ring tab 6 is formed into a non- circular shape so as to extend outward. |
