Method of producing and cutting relatively-small elements

Details Method of producing and cutting relatively-small elements Method of producing and cutting relatively-small elements

B - Operations, Transporting

26

F

B26F 1/40 (2006.01) D21H 21/40 (2006.01)

Patent

CA 2555588

The invention relates to a method of producing relatively-small elements, such as small boards. The inventive method comprises the following steps consisting in: unwinding a wound sheet; optionally printing at least partially on at least one face of said sheet; cutting the sheet deeply using a succession of at least two cutting patterns which intersect such as to form a resulting pattern which forms a detached element that constitutes the relatively-small element, whereby the cutting operation is performed with a series of synchronised die cylinders which bear one of the cutting patterns respectively and anvil cylinders which are disposed between the die cylinders, the sheet moving between said cylinders; and recovering the detached elements which form the relatively-small elements. The invention also relates to the method used to cut said elements, the corresponding devices, the actual elements and the sheets containing same. The invention is suitable for security or decorative elements as well as secured or decorative paper.

L~invention concerne un procédé de fabrication d~éléments de format relativement petit, notamment tels que des planchettes, comportant les étapes suivantes : - on déroule une feuille bobinée, puis - on imprimé éventuellement cette feuille au moins partiellement sur au moins une face, puis - on découpe à pleine chair «à fond» la feuille selon une succession d~au moins deux motifs de découpe qui s~entrecroisent de manière à constituer un motif résultant qui formera un élément détaché constituant l~élément de format relativement petit, cette découpe se faisant à l~aide d~une succession de cylindres de découpe synchronisés portant respectivement un des motifs de découpe, des cylindres enclume étant intercalés entre ces cylindres de découpe, la feuille cheminant entre tous ces cylindres, - on récupère les éléments détachés qui forment lesdits éléments de format relativement petit. Elle concerne aussi en particulier le procédé de découpe desdits éléments, les dispositifs correspondants, lesdits éléments ainsi que les feuilles les contenant. Application aux éléments de sécurité ou décoratifs et aux papiers sécurisés ou décoratifs.

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