| 摘要 |
PROBLEM TO BE SOLVED: To provide a cap which prevents a score line from being cracked or broken by the load when fitted to the neck of a container.SOLUTION: A plugging type easily openable/closable cap includes a cylindrical part 3 which is pushed in and fitted to the neck 2 formed on a container, and an opening/closing part 10 which is connected to part of a circumferential edge on the upper end side of the cylindrical part 3 via a hinge 11, and connected to other parts of the circumferential edge on the upper end side of the cylindrical part 3 via a score line 12 with a small remaining thickness to seal a mouth formed on a fore end of the neck 2. A thin-walled weakened portion 14 to allow the opening/closing part 10 to be deflected in the approaching direction to the cylindrical part 3 when the plugging force for pushing the cylindrical part 3 into the neck 2 is applied from the upper side of the opening/closing part 10, is provided between the lower edge of the opening/closing part 10 and the upper edge of the cylindrical part 3. |
