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US 9,012,019 B2Granted
Data carrier card and method for manufacturing a data carrier card
AssigneeGiesecke & Devrient GmbH
InventorJosef Riedl
Life of this patent
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Abstract
A card body for a portable data carrier, in particular a chip card or magnetic strip card, and a method for manufacturing a card body. The card body includes at least a coextruded foil having at least two areas with different material properties. By using coextruded foils a card body consisting of a plurality of alternating opaque and transmissive strips as well as a card body with a window can be formed in a simple fashion.
Claims18
A card body, comprising:
- at least two coextruded foils each comprising an opaque portion having high opacity and a transmissive portion having low opacity,
- said foils being disposed with respect to each other so that in at least a first area of the card body the transmissive portion of one of the foils overlap to form a window and in adjoining second area of the card body the transmissive portion of one of the foils and the opaque portion of a separate one of the foils overlap such that outside the first area, the card body has a graduated opacity.
A method for manufacturing a card body for a portable data carrier, comprising:
- coextruding at least two foils each formed of at least two different polymer materials and each foil comprising an opaque portion having higher opacity and a transmissive portion having lower opacity;
- arranging said foils with respect to each other to form the card body, the foils being arranged such that:
- in a first area of the card body the transmissive portions of the foils overlap to form a window,
- outside the first area the transmissive portions of the foils and the opaque portions of the foils overlap in a manner such that the card body has a graduated opacity.
1 more element
A card body of a portable data carrier, comprising:
- a first coextruded foil comprising a first opaque portion and a first transmissive portion, the first opaque portion and the first transmissive portion each having an opacity, the opacity of the first opaque portion being relatively higher than the opacity of the first transmissive portion;
- and
- a second coextruded foil secured to the first foil, the second foil comprising a second opaque portion and a second transmissive portion, the second opaque portion and the second transmissive portion each having an opacity, the opacity of the second opaque portion being relatively higher than the opacity of the second transmissive portion,
- the first and second foils being positioned with respect to each other such that:
- the second transmissive portion and the first transmissive portion overlap to form a window of the card body having relatively low opacity,
- outside of the window, the first transmissive and opaque portions overlap the second transmissive and opaque portions such that the card body has a graduated opacity.
3 more elements
A method for manufacturing a card body for a portable data carrier, the method comprising:
- coextruding a first foil formed of at least two different polymer materials, the first foil being comprised of a first opaque portion and a first transmissive portion, the first opaque portion and the first transmissive portion each having an opacity, the opacity of the first opaque portion being relatively higher than the opacity of the first transmissive portion;
- coextruding a second foil formed of at least two different polymer materials, the second foil being comprised of a second opaque portion and a second transmissive portion, the second opaque portion and the second transmissive portion each having an opacity, the opacity of the second opaque portion being relatively higher than the opacity of the second transmissive portion;
- forming the card body from the first and second foils, the first and second foils of the formed card body being positioned with respect to each other such that:
- the second transmissive portion and the first transmissive portion overlap to form a window of the card body having relatively low opacity,
- outside of the window, the first transmissive and opaque portions overlap the second transmissive and opaque portions such that the card body has a graduated opacity.
2 more elements
Dependencies are inferred from the claim text.