Thermoplastic comprising metal identification platelets

Details Thermoplastic comprising metal identification platelets Thermoplastic comprising metal identification platelets

C - Chemistry, Metallurgy

08

K

C08K 3/08 (2006.01) C08K 7/00 (2006.01)

Patent

CA 2698610

The invention relates to a transparent thermoplastic comprising from 0.0001 to 2% by weight of essentially flat metal identification platelets with a greatest longitudinal dimension of less than 200 µm and a thickness of 2-10 µm, a round or n-angled form where n >= 4, characterized in that the metal identification platelets have no recesses or have recesses which are essentially in the middle of the metal identification platelet, do not come closer than 20 µm to the surrounding outer edge of the metal identification platelet and do not constitute more than 30% of the surface of the metal identification platelet, and to the production thereof and use thereof for producing films for personalization of a card layer composite and data carriers in card form, especially smart cards, magnetic strip cards, identification cards and the like.

L'invention concerne un thermoplaste transparent contenant 0,0001 à 2 % en poids de plaquettes de marquage métalliques essentiellement plates présentant une dilatation linéaire maximale inférieure à 200 µm et une épaisseur de 2-10 µm, une forme arrondie ou à n angles, sachant que n = 4. L'invention est caractérisée en ce que les plaquettes de marquage métalliques ne présentent pas d'évidement ou ont des évidements qui se trouvent essentiellement au milieu des plaquettes de marquage métalliques, le pourtour extérieur de la plaquette de marquage métallique n'étant pas supérieur à 20 µm et ne constituant pas plus de 30 % de la surface de la plaquette de marquage métallique, sa fabrication et son utilisation pour la fabrication de feuilles servant à personnaliser un composite stratifié pour carte et un support de données sous forme de carte, en particulier, de cartes à puce, de cartes à bande magnétique, de cartes électroniques et autres.

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