Process for making cardboard having safety means

Details Process for making cardboard having safety means Process for making cardboard having safety means

D - Textiles, Paper

21

F

D21F 11/04 (2006.01) D21H 27/38 (2006.01) D21H 21/44 (2006.01) D21H 21/46 (2006.01) D21H 27/10 (2006.01)

Patent

CA 2344497

The invention relates to a process for making a cardboard having safety means which is suitable for such products as pharmaceutical packages. The safety means prevents forgery and confirms the legitimacy of the package. A multilayer cardboard is made by papermaking method. The multilayer cardboard (27) has a safety means which comprises a surface layer of white cellulose fibers (38) in admixture with several synthetic fibers (39) which are treated so as to be hardly visible to the naked eye but are visible under special lighting. The Safety means further has a colored core (41) in contrast to the other white cellulose layers (42). The color core cannot be accessed without rupture or destruction of the external layers.

L'invention concerne un procédé de fabrication d'un carton doté d'un moyen de sécurité, à utiliser pour des produits tels que des emballages pharmaceutiques. Ledit moyen de sécurité empêche toute tentative de contrefaçon desdits emballages et garantit l'authenticité de ceux-ci. On produit un carton multicouche selon le procédé de fabrication du papier. Le carton multicouche (27) comporte un moyen de sécurité constitué d'une couche superficielle de fibres de cellulose blanche (38) mélangées à plusieurs fibres synthétiques (39) qui sont traitées de sorte qu'elles soient difficilement visibles à l'oeil nu mais visibles sous un éclairage spécial. Par ailleurs, le moyen de sécurité du carton multicouche (27) possède un noyau coloré (41) qui contraste avec les autres couches de cellulose blanche (42). L'accès au noyau est impossible sans rupture ou destruction des couches externes.

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