| 摘要 |
PROBLEM TO BE SOLVED: To easily unseal without using a separate tool. SOLUTION: Circular perforations 3 are formed in the vicinity of the center of one of sides of an upper wall plate 2 of a container 1, and an unsealing aid plate 7 in a shape corresponding to the perforations 3 is stuck to an internal face of the upper wall plate 2. A pull tab 6 is engaged with a lateral hole 4B while a coupling lever 4 passing through the unsealing aid plate 7 is inserted through a through hole 5 of the upper wall plate 2. Such a structure allows the unsealing aid plate 7 to be pulled up via the coupling lever 4 with the pull tab 6 pulled up, thereby breaking the perforations 3 for unsealing. Thus unsealing is possible only by pulling the pull tab 6 without separately using a tool. |
