Security paper from film-fibril sheets

Details Security paper from film-fibril sheets Security paper from film-fibril sheets

B - Operations, Transporting

41

M

283/20, 154/71.0

B41M 3/14 (2006.01) D04H 13/00 (2006.01) D21H 21/42 (2006.01)

Patent

CA 1133818

ABSTRACT OF THE DISCLOSURE A security paper is provides in which identifying material is contained in a plane within the thickness of a bonded, nonwoven polyethylene film-fibril sheet having an opacity of at least 70% and a delamination resistance of at least 60 grams per centimeter. A process for making such paper includes forming an assembly of two unbonded, lightly consolidated, nonwoven, polyethylene film-fibril sheets containing identifying material between them, compressing the assembly in an unheated width and then self-bonding the compressed assembly while under restraint by contact with a heated drum. Such security paper is useful for bank notes, stock certificates, paper currency and the like.

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