Card laminate

• US 7,503,503 B2
• Filed: 05/05/2005
• Issued: 03/17/2009
• Est. Priority Date: 05/06/2004
• Status: Active Grant

• Current Assignee: Giesecke + Devrient Mobile Security GmBH (Giesecke & Devrient GmbH)
• Original Assignee: Giesecke & Devrient GmbH
• Inventors: Riedl, Josef, Jachmann, Jurgen
• Primary Examiner(s): Frech; Karl D
• Assistant Examiner(s): Kim; Tae W
• Application Number:
  US11/122,014
• Publication Number:
  US 20050247795A1
• Time in Patent Office: 1,412 Days
• Field of Search: 235/488
• US Class Current: 235/488
• CPC Class Codes: G06K 19/06196 Constructional details

Abstract

A card laminate is produced from a centrally disposed foil laminate (1) consisting of an interior layer (2) with a metal layer (3) and with two exterior transparent plastic layers (4a, 4b), and two exterior plastic films (5a, 5b) of which at least the plastic film (5a) overlying the metal layer (3) is transparent and carries a print (6a). If the print (6a) is on the exterior, a transparent cover layer (7a) is furthermore provided. Materials and layer thicknesses are preferably selected symmetrically to the interior, metallized layer (2, 3) in order to reduce warping effects.

Claims

1. A card laminate for card-shaped data carriers, as exemplified by smart cards, magnetic strip cards, and identity cards, comprising:

an interior layer having two opposing sides, and being provided with a metal layer partially or all over at least on one of the two opposing sides of the interior layer,

two separate first plastic layers, each of which is disposed on a different one of the two opposing sides of the interior layer, wherein at least a first one of the first plastic layers overlies the metal layer on one of the two opposing sides of the interior layer and is transparent, and

two separate second plastic layers, each of which is disposed on a different one of two exterior sides facing out from the two first plastic layers, wherein at least a first one of the second plastic layers overlies the first one of the first plastic layers, is transparent and has a printed image at least on one of its two opposing sides.

2. The card laminate according to claim 1, including a transparent cover layer over the first one of the second plastic layers.

3. The card laminate according to claim 2, wherein the recited layers including the cover layer are laminated together.

4. The card laminate according to claim 2, wherein the cover layer is a transparent lacquer layer.

5. The card laminate according to claim 1, wherein thicknesses and materials of the recited layers are distributed symmetrically with respect to the interior layer and its associated metal layer or layers.

6. The card laminate according to claim 1, wherein the interior layer comprises a thermoplastic.

7. The card laminate according to claim 1, wherein the first one of the first plastic layers comprises a thermoplastic.

8. The card laminate according to claim 1, wherein the first one of the second plastic layers comprises a thermoplastic.

9. The card laminate according to claim 1, wherein the first one of the second plastic layers has printed images on both sides.

10. The card laminate according to claim 1, wherein the first one of the first plastic layers also has a printed image.

11. The card laminate according to claim 1, wherein at least one area of the interior layer has a diffractively effective relief structure.

12. A card-shaped data carrier comprising, a card body comprising a card laminate according to claim 1.

13. A method for producing a card laminate for card-shaped data carriers as exemplified by smart cards, magnetic strip cards, and identity cards, comprising the steps of:

providing a foil laminate having an interior layer having two opposing sides provided with a metal layer partially or all over at least on one of the two opposing sides of the interior layer, and providing two separate plastic layers having exterior sides, each of the two separate plastic layers is disposed on a different one of the two opposing sides of the interior layer, wherein at least a first one of the plastic layers overlies the metal layer on one of the two opposing sides of the interior layer and is transparent,

disposing two separate plastic films on the foil laminate such that each of the two plastic films is disposed on a different one of two exterior sides facing out from the plastic layers, wherein at least a first one of the plastic films overlies the first one of the plastic layers, is transparent and has a printed image at least on one of its two opposing sides, and

laminating the foil laminate with the two plastic films.

14. The method according to claim 13, comprising the further step of providing a transparent cover layer over the first one of the two plastic films.

15. The method according to claim 14, wherein the first one of the two plastic films is provided during the disposing step as a laminate with the cover layer.

16. The method according to claim 14, wherein the cover layer is provided as a separate film, the cover layer being connected with the first one of the two plastic films by the laminating step.

17. The method according to claim 13, comprising further step of selecting thicknesses and materials of the stated layers and films such that they are distributed symmetrically with respect to the interior layer.

18. The method according to claim 13, wherein the interior layer comprises PET.

19. The method according to claim 13, wherein the first one of the first plastic layers of the foil laminate comprises a thermoplastic.

20. The method according to claim 13, wherein the first one of the plastic films comprises thermoplastic.

21. The method according to claim 13, wherein the first one of the plastic films is provided with printed images on both sides before the laminating step.

22. The method according to claim 13, wherein the first one of the plastic layers is provided with a printed image.

23. The method according to claim 13, wherein at least one area of the interior layer has a diffractively effective relief structure.

24. A method for producing a card-shaped data carrier, as exemplified by smart card, magnetic strip card, and identity card, comprising the steps of the method according to claim 13 and step of detaching a card body for the card-shaped data carrier from the card laminate.

25. The method according to claim 24, including either or both before and after the detaching step, further production steps of either or both integrating and applying other elements either or both in and on the card body.