Security paper

Details Security paper Security paper

2001-12-05

2008-10-07

Fortuna, José A (Department: 1791)

Paper making and fiber liberation

Processes and products

Safety, identification and fraud preventing paper

C162S134000, C162S135000, C162S175000, C162S168100, C162S169000, C428S206000, C283S058000, C283S072000

Reexamination Certificate

active

07431798

ABSTRACT:
Security paper adapted to resist fraudulent alteration of toner-printed information thereon and to make such alteration or attempts at alteration evident has a maximum Scott-Bond strength of 150 J m−2; a Bendtsen roughness of not more than about 150 ml min−1; and is size press or otherwise treated with a thermally-softenable polymer composition, for example acrylic polymer or copolymer, a polyvinyl acetate polymer, a vinyl acetate/ethylene copolymer, or a vinyl acetate/vinyl chloride/ethylene terpolymer. Preferably the paper has filler content of about 15% to about 20% by weight.

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James P. Case, Editor “Pulp and paper Chemistry and Chemical technology, ” Third Edition, vol. III, p. 1519.
Arjo Wiggins, “Newsletter: Laserguar and Jetguard” May 27, 2001, vol. 5, Issue 6.

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