Multilayered paper

Details Multilayered paper Multilayered paper

D - Textiles, Paper

21

H

D21H 21/40 (2006.01) D21F 1/44 (2006.01) D21F 11/06 (2006.01) D21H 27/38 (2006.01) D21H 11/12 (2006.01) D21H 13/16 (2006.01) D21H 13/18 (2006.01)

Patent

CA 2258719

The present invention furnishes a paper that includes at least two layers in the z direction, which in turn are, in the y direction, divided into at least two fields with properties that differ from each other and that extend in the x direction. These properties can be optical or tactile, preferably optical. Such a paper is secure against forgery as it has one appearance when looked down upon, yet displays another hidden pattern that becomes apparent when looking through the paper. An arrangement for producing such paper includes means of arranging stocks in exact positions on the roll screen, both in the y and x directions of the paper. The present invention also includes a method for producing such paper.

L'invention concerne un papier comprenant au moins deux couches dans le sens z, qui sont, à leur tour, divisées, dans le sens y, en au moins deux zones dont les propriétés diffèrent l'une de l'autre et qui s'étendant dans le sens x. Ces propriétés peuvent être optiques ou tactiles, de préférence, optiques. Ce papier constitue une sécurité contre la contrefaçon, étant donné qu'il présente un aspect quand on le regarde de haut en bas, mais affiche un autre motif caché devenant apparent quand on regarde le papier par transparence. Elle concerne également un dispositif servant à fabriquer ce papier et comprenant des moyens servant à disposer la pâte à papier à des positions précises sur le rouleau, à la fois dans les sens y et x du papier. Elle concerne, de plus, un procédé servant à fabriquer ce papier.

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