B - Operations – Transporting – 65 – D
Patent
B - Operations, Transporting
65
D
220/2, 117/6
B65D 33/00 (2006.01) B65D 33/34 (2006.01) G06K 19/06 (2006.01) G09F 3/00 (2006.01)
Patent
CA 1049460
ABSTRACT OF THE DISCLOSURE A pouchfor aninformation-bearing article for conveying the article from one person to a second person in such a way that the incormation cannot be surreptitiously detected by an intervening person. The pouch includes a polymer-based coating formed of small theremo- plastic polymeric particles deposited in intimate contact with one another within a sheet material forming the pouch. The appearance of the polymer based coating is irreversibly and substantially changed by subjecting the polymeric particles to temperatures of at least 140°F. The most advantageous construction of the pouch combines means to avoid surreptitious detection of the hidden indicia by optical, chemical, thermal and mechanical processes.
278188
Carpenter Leon G.
Carrier Lee A.
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