Transparent paper and method of making same

Details Transparent paper and method of making same Transparent paper and method of making same

D - Textiles, Paper

21

H

D21H 21/40 (2006.01) B42D 15/00 (2006.01)

Patent

CA 2670586

The invention teaches a novel paper substrate having a transparent field of a dense array of a plurality of laser-formed microperforations. The resultant paper can be useful as a replacement for glassine paper, and can be useful in secure documents. The transparent field is integral to the paper substrate and can be formed by laser techniques surprisingly resulting in a transparent field retaining acceptable strength characteristics after lasing. The transparent field acts as a self authentication device.

L'invention propose un nouveau substrat de papier ayant un champ transparent constitué d'un réseau dense d'une pluralité de microperforations formées au laser. Le papier qui en résulte peut s'utiliser pour remplacer le papier cristal et peut s'utiliser dans des documents de sécurité. Le champ transparent fait partie intégrante du substrat de papier et peut être formé par des techniques au laser ayant pour résultat surprenant que le champ transparent garde des caractéristiques de résistance acceptables après l'utilisation du laser. Le champ transparent agit comme un dispositif d'auto-authentification.

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