Improvement in security features for paper

Details Improvement in security features for paper Improvement in security features for paper

D - Textiles, Paper

21

H

D21H 21/40 (2006.01) B41M 3/10 (2006.01) B41M 3/14 (2006.01) B42D 15/00 (2006.01) D21H 23/28 (2006.01)

Patent

CA 2172623

The invention relates to improvements in security features in paper and in particular to a method of making paper and transparenting selected areas of paper to provide enhanced security features. The invention thus provides a method of making paper comprising the steps of depositing fibres (12) onto a support surface (13) to form a porous absorbent sheet (14), applying a transparenting resin to at least a portion of said porous sheet and subsequenting impregnating porous sheet with a sizing resin.

Cette invention se rapporte à des améliorations apportées aux caractéristiques de sécurité du papier, et en particulier à un procédé de fabrication de papier permettant de rendre transparentes des régions choisies du papier afin d'en améliorer les caractéristiques de sécurité. L'invention se rapporte ainsi à un procédé de fabrication de papier consistant à déposer des fibres (12) sur une surface de support (13) pour former une feuille absorbante et poreuse (14), à appliquer sur au moins une partie de la feuille poreuse une résine la rendant transparente et à imprégner ultérieurement la feuille poreuse d'une résine d'encollage.

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