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1. (WO1997005042) TAMPER-EVIDENT SECURITY ENVELOPES

Pub. No.:    WO/1997/005042    International Application No.:    PCT/US1996/012284
Publication Date: Feb 13, 1997 International Filing Date: Jul 25, 1996
IPC: B65D 33/34
Applicants: KRISTAL, Boaz
FRIEDMAN, Mark, M.
Inventors: KRISTAL, Boaz
Title: TAMPER-EVIDENT SECURITY ENVELOPES
Abstract:
A tamper-evident envelope has a first layer (12) of paper-containing material and a second layer (14) of paper-containing material attached to each other along a number of seams. Each seam (16, 18, 20) includes a pattern embossed and/or perforated through both layers along a major part of the seam. If the envelope is opened and resealed along one of these seams, the embossed or perforated pattern is corrupted, thereby making the unauthorized opening of the envelope readily apparent to an intended recipient.