| 摘要 |
<p>The mailing envelope has row of oblique cuts in registration with the adhesive area of the back where the corresponding closure flap will adhere, so that in one of the extremities of the row of oblique cuts there is provided a special larger cut with a different inclination, said cut forming a means for initiating the opening of the envelope, by tearing out the aligned oblique cuts, when pulling from the respective extremity of the flap. Likewise, a second special cut provided at the opposite extremity of the row of oblique cuts will form the means to evidence a fraudulent attempt to open the envelope, the reason being that, when pulling from that second flap extremity in order to try to separate it from the back of the envelope, a tearing is produced in the transverse direction to the envelope. Both the oblique cuts and the extreme cuts for initiating the opening and tamper evidencing, are applicable to envelopes with straight, trapezoidal or triangular flaps. <IMAGE></p> |
