Security paper and method for producing the same

Details Security paper and method for producing the same Security paper and method for producing the same

D - Textiles, Paper

21

H

D21H 21/40 (2006.01) D21H 19/82 (2006.01) B41M 3/14 (2006.01) D21H 11/12 (2006.01) D21H 19/18 (2006.01) D21H 19/26 (2006.01) D21H 19/32 (2006.01)

Patent

CA 2515420

The invention relates to a security paper for the production of security documents such as bank notes, passports, ID documents or the like, comprising a flat substrate (12) which is provided at least partially with a dirt- repellent protective layer (14) in order to extend the service life and usability thereof. According to the invention, the protective layer (14) comprises at least two lacquer coatings (16,18). A first lower lacquer coating (16) consists of a physically drying lacquer coating which is applied to the substrate (12) producing a contact with the substrate (12) lying therebelow and closing the pores thereof. A second upper lacquer coating (18), which protects the substrate (12) from physical and chemical effects, is also provided.

L'invention concerne un papier de sécurité destiné à la production de documents de valeur, tels que des billets, des passeports, des documents d'identité ou analogues, comprenant un substrat (12) plat, qui est pourvu au moins partiellement d'une couche de protection (14) imperméable à la saleté, de façon à étendre sa durée de vie et sa capacité à l'usure. Selon l'invention, la couche de protection (14) comprend au moins deux couches de vernis (16, 18). Une première couche de vernis (16) inférieure est formée d'une couche de vernis séchant de manière physique, et appliquée sur le substrat (12), cette dernière produisant un contact avec le substrat (12) situé en dessous et fermant ses pores. Une seconde couche de vernis (18) supérieure protège le substrat (12) des effets physiques ou chimiques.

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