Identification document having intrusion resistance

• US 20050247794A1
• Filed: 03/28/2005
• Published: 11/10/2005
• Est. Priority Date: 03/26/2004
• Status: Abandoned Application

• Current Assignee: Digimarc Corporation
• Original Assignee: Digimarc Corporation
• Inventors: Yeh, Tung-Feng, Bi, Daoshen, Jones, Robert L.
• Application Number:
  US11/092,136
• Publication Number:
  US 20050247794A1
• Time in Patent Office: Days
• US Class Current: 235/487
• CPC Class Codes: B42D 2033/30 Plastic material
• CPC Class Codes: B42D 25/00 Information-bearing cards or sheet-like structures characterised by identification or security features; Manufacture thereof printing processes to produce identification or security features B41M3/14
• CPC Class Codes: B42D 25/21 for multiple purposes
• CPC Class Codes: B42D 25/22 for use in combination with accessories specially adapted for information-bearing cards
• CPC Class Codes: B42D 25/23 Identity cards
• CPC Class Codes: B42D 25/24 Passports
• CPC Class Codes: B42D 25/285 Gift cards
• CPC Class Codes: B42D 25/29 Securities; Bank notes
• CPC Class Codes: B42D 25/309 Photographs
• CPC Class Codes: B42D 25/313 Fingerprints
• CPC Class Codes: B42D 25/318 Signatures
• CPC Class Codes: B42D 25/41 using electromagnetic radiation B42D25/435 takes precedence
• CPC Class Codes: B42D 25/45 Associating two or more layers
• CPC Class Codes: B42D 25/46 using pressure
• CPC Class Codes: B42D 25/48 Controlling the manufacturing process
• CPC Class Codes: G06K 19/00 Record carriers for use with machines and with at least a part designed to carry digital markings
• CPC Class Codes: G06K 19/02 characterised by the selection of materials, e.g. to avoid wear during transport through the machine

Abstract

An identification document is provided, comprising a core layer, such as TESLIN, laminated directly to a laminate layer, such as polycarbonate, without the use of an adhesive. The core layer has at least one indicium formed thereon and has a first surface. The first layer of laminate is affixed to the core layer by a press lamination process where the press lamination process is sufficient to couple the core layer to the first layer such that an attempt to separate the first layer from the core layer causes at least a partial destruction of the core layer.

Claims

1. An identification document, comprising:

a core layer having at least one indicium formed thereon, the core layer having a first surface; and

a first layer of laminate affixed to the core layer by a press lamination process and without use of an adhesive, where the press lamination process is sufficient to couple the core layer to the first layer such that an attempt to separate the first layer from the core layer causes at least a partial destruction of the core layer.

2. The identification document of claim 1, wherein the lamination process is sufficient to fuse the first layer of laminate to the core layer.

3. The identification document of claim 1, wherein the core layer comprises at least one of a resin, polyester, polycarbonate, vinyl, acrylate, urethane, and cellulose based materials, thermosetting material, thermoplastic, polymer, copolymer, polycarbonate, fused polycarbonate, polyester, amorphous polyester, polyolefin, silicon-filled polyolefin, TESLIN, TYVEC, plastic paper, paper, synthetic paper, foamed polypropylene film, polyvinyl chloride, polyethylene, thermoplastic resins, engineering thermoplastic, polyurethane, polyamide, polystyrene, expanded polypropylene, polypropylene, acrylonitrile butadiene styrene (ABS), ABS/PC, high impact polystyrene, polyethylene terephthalate (PET), PET-G, PET-F, polybutylene terephthalate PBT), acetal copolymer (POM), polyetherimide (PEI), polyacrylate, poly(4-vinylpyridine, poly(vinyl acetate), polyacrylonitrile, polymeric liquid crystal resin, polysulfone, polyether nitride, and polycaprolactone.

4. The identification document of claim 1, wherein the first layer of laminate comprises at least one of a resin, polyester, polycarbonate, vinyl, acrylate, urethane, and cellulose based materials, thermosetting material, thermoplastic, polymer, copolymer, polycarbonate, fused polycarbonate, polyester, amorphous polyester, polyolefin, silicon-filled polyolefin, TESLIN, TYVEC, plastic paper, paper, synthetic paper, foamed polypropylene film, polyvinyl chloride, polyethylene, thermoplastic resins, engineering thermoplastic, polyurethane, polyamide, polystyrene, expanded polypropylene, polypropylene, acrylonitrile butadiene styrene (ABS), ABS/PC, high impact polystyrene, polyethylene terephthalate (PET), PET-G, PET-F, polybutylene terephthalate PBT), acetal copolymer (POM), polyetherimide (PEI), polyacrylate, poly(4-vinylpyridine, poly(vinyl acetate), polyacrylonitrile, polymeric liquid crystal resin, polysulfone, polyether nitride, and polycaprolactone.

5. The identification document of claim 1, wherein the core layer comprises silica filled polyolefin and the laminate layer comprises polycarbonate.

6. The identification document of claim 1, wherein the core layer and the laminate layer each comprise polycarbonate.

7. The identification document of claim 1, wherein at least one of the laminate layer and the core layer further comprises a laser sensitizing material.

8. The identification document of claim 7, wherein the laser sensitizing material comprises copper potassium iodide, copper iodide, zinc sulfide, barium sulfide, alkyl sulfonate, or thioester.

9. The identification document of claim 1, wherein the core layer is laminated to the first layer of laminate by a press lamination process wherein the a lamination temperature is between 310 and 350 degrees F., the lamination pressure is between 5000-15,000 pounds per square meter (PSM), and the lamination time is between 5-10 minutes.

10. The identification document of claim 1, wherein the lamination temperature is about 340 degrees F., the pressure is about 10,000 PSM, and the lamination time is about 7 minutes.

11. The identification document of claim 1, further comprising a second laminate layer disposed between the first laminate layer and the core layer, wherein the second laminate layer has a lower molecular weight than the first laminate layer.

12. The identification document of claim 1, further comprising a third laminate layer disposed between the first laminate layer and the core layer, wherein the third laminate layer further comprises a laser sensitizing material.

13. The identification document of claim 1, wherein the indicium formed on the core layer comprises at least one of fixed and variable data.

14. The identification document of claim 1, wherein the indicium is printed using at least one of Indigo, laser xerography, inkjet, D2T2, offset, lithography, thermal transfer, and laser engraving.

15. A method of manufacturing an identification document, comprising:

providing a core layer;

forming at least one indicium on the core layer; and

affixing a laminate layer to the core layer via a lamination process that is sufficient to couple the core layer to the first layer such that an attempt to separate the first layer from the core layer causes at least a partial destruction of the core layer.

16. The method of claim 15, wherein the core layer comprises silica filled polyolefin.

17. The method of claim 15, wherein the laminate layer comprises polycarbonate.

18. The method of claim 15 where the lamination process comprises a platen press lamination process.

19. The method of claim 15 where the lamination process comprises:

(a) heating the core layer and the laminate layer to a temperature between 310 and 350 degrees F.;

(b) applying a lamination pressure of between 5000-15,000 pounds per square meter (PSM); and

(c) maintaining steps (a) and (b) for time between 5-10 minutes.

20. The method of claim 15 where the lamination process comprises:

(a) heating the core layer and the laminate layer to a temperature of about 340 degrees F.;

(b) applying a lamination pressure of about 10,000 pounds per square meter (PSM); and

(c) maintaining steps (a) and (b) for about 7 minutes.