| 摘要 |
PURPOSE: An envelope capable of easily opening without using a separate cutting unit is provided to enable users to maintain the shape of the envelope after opening. CONSTITUTION: An envelope capable of easily opening without using a separate cutting unit includes an envelope body(10), a cut-out line(20), and parallel folding lines(30). The envelope body includes an opening for inserting and discharging contents, and a cover(13) sealing the opening. The cut-out line is formed on one of the same line formed on the upper, lower, left, or right edge of the envelope body. The parallel folding lines are formed on both sides around the cut-out line on the envelope body, and extended in parallel with the cut-out line. The parallel folding lines form a gripping unit(3) for cutting the cut-out line when the edge of the envelope with the cut-out line is pressurized to the inner direction.
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