| 摘要 |
PROBLEM TO BE SOLVED: To provide an easy unsealable envelope in which the sent envelope can be easily unsealed without using any scissors and a thick stored paper is not torn by accident. SOLUTION: There is provided an envelope (4) in which portions of the envelope (4) having perforations (1) at its front and rear surfaces near the end portions of the perforations (1) are reinforced with a pasteboard, plastics, plates and fittings (2) or the like, and further the portions to be reinforced are totally glued (3). COPYRIGHT: (C)2007,JPO&INPIT
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