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Proceedings Paper

Standardizable method for testing foil-substrate adherence
Author(s): Karel J. Schell; Han Klinker; Rudolf L. van Renesse
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Paper Abstract

An increasing number of currencies is provided with an Optically Variable Device (OVD) as a counterfeit deterrent. The device is adhered to the substrate by a hot melt adhesive. Adherence is generally tested with an adhesive tape, a practical test that sufficed up to now. Nevertheless, the question may be raised if a method can be developed with a better discriminating power as well as a larger potential for standardization. A feasibility test with the IGT printability tester, using a high viscosity pick up oil, shows promising results. This paper presents the testing method, shows a few preliminary results and discusses these results with respect to the foil application method.

Paper Details

Date Published: 19 April 2002
PDF: 6 pages
Proc. SPIE 4677, Optical Security and Counterfeit Deterrence Techniques IV, (19 April 2002); doi: 10.1117/12.462727
Show Author Affiliations
Karel J. Schell, IGT International Print and Security Consulting (Netherlands)
Han Klinker, IGT International Print and Security Consulting (Netherlands)
Rudolf L. van Renesse, TNO Institute of Applied Physics (Netherlands)

Published in SPIE Proceedings Vol. 4677:
Optical Security and Counterfeit Deterrence Techniques IV
Rudolf L. van Renesse, Editor(s)

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