D - Textiles – Paper – 21 – H
Patent
D - Textiles, Paper
21
H
D21H 19/66 (2006.01) B44C 1/26 (2006.01) D21H 21/52 (2006.01) G03H 1/02 (2006.01) D21H 25/00 (2006.01) D21H 25/06 (2006.01)
Patent
CA 2451781
The invention relates to a holographic microembossed printable sheet. The inventive sheet is characterised in that it comprises a support which is coated with a pigmented layer on at least one of the two faces thereof. Said pigmented layer comprises: (i) a non-water-soluble thermoplastic binder; and (ii) mineral pigments selected from among: pigments known as type I pigments which have an average size that is smaller than the amplitude of the microembossing; pigments known as type II pigments which have an average size that is greater than the amplitude of the microembossing and a measured BET specific surface area that is greater than 10 m2/g in a quantity smaller than or equal to 10 % in relation to the binder in dry weight; and mixtures of both pigment types. The invention also relates to the method of producing the sheet, the printable sheet which can be hot microembossed in order to form holographic patterns and the use of the layer that enables said sheet to be produced.
La présente invention concerne une feuille avec des microembossages à effet holographique et imprimable qui se caractérise par le fait qu'elle comporte un support revêtu sur au moins l'une de ses faces, d'une couche pigmentée comportant: un liant thermoplastique non-hydrosoluble, des pigments minéraux choisis parmi: les pigments de taille moyenne inférieur à l'amplitude des microembossages, dits pigments de type I, les pigments de taille moyenne supérieure à l'amplitude des microembossages et de surface spécifique BET supérieure à 10 m2/g mesurée et en une quantité inférieure ou égale à 10% par rapport au liant en poids sec, dits pigments de type II, et leurs mélanges. La présente invention a également pour objet le procédé de réalisation de la feuille ainsi qu'une feuille imprimable et microembossable à chaud pour former les motifs holographiques et utilisation de la couche permettant la réalisation de cette feuille.
Arjo Wiggins
Robic
LandOfFree
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