D - Textiles – Paper – 21 – H
Patent
D - Textiles, Paper
21
H
D21H 21/30 (2006.01) D21H 19/36 (2006.01) D21H 21/16 (2006.01) D21H 21/48 (2006.01)
Patent
CA 2641378
Coating cardboard, more particularly for producing packaging, formed of a (natural-)fibre-based support layer covered on at least one of its faces by a pigment layer, characterized in that a fluorescent compound is disposed discontinuously on the surface of the support layer, between the support layer and the pigment layer, said compound being invisible to natural light and visible under UV irradiation through the pigment layer, and constituting a marking element of said cardboard, without altering the printability properties of the outer face of the pigment layer. In the method of said marking of a coated cardboard, the marking element is applied according to a discontinuous surface, by means of an aqueous solution or dispersion containing the fluorescent compound, to the surface of the face of the support layer which is intended to be covered subsequently by the pigment layer, by means for example of flexographic printing or spraying. The marking element may serve as a distinctive sign or security sign.
Carton couché, notamment pour la réalisation d'emballage, formé d'une couche support à base de fibres (naturelles) recouverte sur au moins une de ses faces d'une couche pigmentaire, caractérisé en ce qu'un composé fluorescent est disposé de manière discontinue à la surface de la couche support, entre la couche support et la couche pigmentaire, ledit composé étant invisible à la lumière naturelle et visible sous irradiation U.V. au travers de la couche pigmentaire et constituant un élément de marquage dudit carton, sans modification des propriétés d'imprimabilité de la face externe de la couche pigmentaire. Dans le procédé dudit marquage d'un carton couché, l'élément de marquage est appliqué selon une surface discontinue, au moyen d'une solution ou dispersion aqueuse renfermant le composé fluorescent en surface de la face de la couche support destinée à être ensuite recouverte de la couche pigmentaire, par exemple par impression flexographique ou par pulvérisation. L'élément de marquage peut servir de signe distinctif ou de sécurité.
Cascades Blendecques Sas
Goudreau Gage Dubuc
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