Security paper, manufacturing method and security document...

Details Security paper, manufacturing method and security document... Security paper, manufacturing method and security document...

D - Textiles, Paper

21

H

D21H 21/42 (2006.01) D21F 1/44 (2006.01)

Patent

CA 2718159

The invention consists in a security paper, as well as the security document obtained with it and the manufacturing process thereof, that combines the security elements called windowed thread with the high contrast single-tone watermark technique. In order to carry out this invention, we make use of the recesses created to cover the thread in the areas where it is visible, which exhibit a greater accumulation of fibres and are therefore opaque areas in the final paper, to insert therein the electrotype or high contrast single- tone watermarks.

Consiste la invención en un papel de seguridad, así como el documento de seguridad obtenido y el procedimiento de fabricación del mismo que combina los elementos de seguridad denominados hilo ventana con la técnica de la marca de agua monotonal de alto contraste. Para poder llevarlo a cabo se aprovecha los recesos creados para la cubrición del hilo en las zonas en las que resulta visible, que presentan una mayor acumulación de fibras y son, por tanto, zonas oscuras en el papel final, para insertar en ellos las marcas de agua electrotípica o monotonales de alto contraste.

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