| 摘要 |
PROBLEM TO BE SOLVED: To achieve all of easily breakable property, prevention of falling down of removal section due to destruction, removal section having long shape, easy production, and prevention of destruction of breakable thin line upon fitting an outer lid on an inside plug, in a container lid having a construction where when the outer lid is rotated in an opening direction for separating an inside plug (4) from an outer lid (6), a breakable thin line (14) formed on a sealing wall (12) of the inside plug is broken.SOLUTION: A locking projection projecting downward is formed on a lower surface of a top surface wall (34) of an outer lid. The locking projection comprises at least one outside locking projection (42a, 42b) and at least one inside locking projection (44a, 44b). Engaged means (30, 32) are arranged on a locking wall (28) of the inside plug. Engaging means (46) is arranged on the locking projection. When the outer lid is rotated in an opening direction relatively to the inside plug, the engaging means and the engaged means are co-operated to prevent the locking wall from moving in a center axis direction relatively to the locking projection and to prevent the locking projection from moving in an opening direction relatively to the locking wall. |
