| 摘要 |
PROBLEM TO BE SOLVED: To produce amusement when an envelope or the like is unsealed, by providing the unsealing structure with a rhythm in order to improve a rate at which advertisement in the form of a leaflet is unsealed. SOLUTION: The unsealing structure is for opening an envelope or the like by cutting off an unsealing strip formed in the envelope or the like. In the opening structure, incisions are made in the form of perforations in the border between the unsealing strip and the envelope or the like, and a plurality of resisting segments are irregularly formed in the unsealing strip from its incision initiating part to its cut terminating end. COPYRIGHT: (C)2007,JPO&INPIT
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