Holographic tamper-evident label

Details Holographic tamper-evident label Holographic tamper-evident label

1997-11-07

2000-07-11

Angebranndt, Martin

Radiation imagery chemistry: process, composition, or product th

Imaging affecting physical property of radiation sensitive...

Making named article

430 1, 430 2, 430320, 283 86, 283101, B42D 1500, B32B 706

Patent

active

060870753

ABSTRACT:
A tamper-evident label includes two parts that are separated from each other when an article to which they are attached is opened. The two parts have matching surface relief patterns secured to each other at an interface, and the indexes of refraction of the parts are substantially equal such that the patterns have no optical effect when attached to each other. When the two parts are separated, however, the patterns generate an image drawing attention to their separation. The patterns are preferably holographic.

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