To provide an envelope in a simple structure for home delivery or mailing which can extremely simply be opened, can be used twice, and can be used as a countermeasure for energy saving.
A seal label 2 is provided at the upper part of the envelope surface 11 of an envelope body 1, and a strip 4 and a release paper 5 with the same member are continuously stuck from the side of the envelope surface 11 through an adhesive layer 3 on the back face of the seal label 2. The whole boundary of the strip 4 and the release paper 5 is divided with a slit part c. A releasing mark 6 so as to release only the release paper 5 is provided on the release paper 5 face. On the surface of the seal label 2 at both positions of the width of the strip 4, an initial notch 7 for raising the end of the strip 4 existing on the back face of the seal label 2 is formed at least on one end in the longitudinal direction of the strip 4, and the strip 4 has a strength enough to tear off the seal label 2 by raising the strip 4.
FUKUI HIROAKI
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