Security paper with shrinking polymer security feature

Details Security paper with shrinking polymer security feature Security paper with shrinking polymer security feature

1998-06-30

2000-10-17

Thibodeau, Paul

Stock material or miscellaneous articles

Structurally defined web or sheet

Discontinuous or differential coating, impregnation or bond

428213, 4284111, 4284796, 428508, 428511, 428515, 4285375, 428916, B32B 310, B32B 2306, B32B 2708, B32B 2710, B32B 2734

Patent

active

061328545

ABSTRACT:
A security paper with a thermoshrinking polymer layer as a security feature wherein the layer of thermoshrinking polymer shrinks and distorts the security paper when heated, demonstrating its authenticity.

REFERENCES:
patent: 4150997 (1979-04-01), Hayes
patent: 4153593 (1979-05-01), Zabiak et al.
patent: 4328332 (1982-05-01), Hayes et al.
patent: 4865914 (1989-09-01), Malhotra
patent: 5405678 (1995-04-01), Bilodeau
patent: 5468581 (1995-11-01), Coe et al.
Kirk-Othmer, Encyclopedia of Chemical Technology, 3rd Edition, vol. 16, pp. 778-779.
Martin J. Snowden et al., "Some like it hot! Thermo-sensitive polymers", 1996, pp. 1-4.
Zhibing Hu et al., "Flexing gels", 1996, p. 1.

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