Process for the production of multi-layer security products, and a security product produced in accordance with the process

• US 20020022112A1
• Filed: 08/24/2001
• Published: 02/21/2002
• Est. Priority Date: 02/24/1999
• Status: Abandoned Application

• Current Assignee: Bundesdruckerei GmbH (Government of Germany)
• Original Assignee: Bundesdruckerei GmbH (Government of Germany)
• Inventors: Hoeppner, Harald, Radtke, Michael, Martens, Detlef, Loer, Thomas
• Application Number:
  US09/938,957
• Publication Number:
  US 20020022112A1
• Time in Patent Office: Days
• US Class Current: 428/156
• CPC Class Codes: B32B 2038/042 Punching
• CPC Class Codes: B32B 2310/0831 using UV radiation
• CPC Class Codes: B32B 2310/0843 using laser
• CPC Class Codes: B32B 2425/00 Cards, e.g. identity cards, credit cards
• CPC Class Codes: B32B 2429/00 Carriers for sound or information
• CPC Class Codes: B32B 33/00 Layered products characterised by particular properties or particular surface features, e.g. particular surface coatings; Layered products designed for particular purposes not covered by another single class
• CPC Class Codes: B32B 37/12 characterised by using adhesives
• CPC Class Codes: B32B 37/153 at least one layer is extruded and immediately laminated while in semi-molten state
• CPC Class Codes: B32B 38/06 Embossing
• CPC Class Codes: B32B 38/145 Printing
• CPC Class Codes: B42D 25/45 Associating two or more layers
• CPC Class Codes: D21H 21/40 Agents facilitating proof of genuineness or preventing fraudulent alteration, e.g. for security paper watermarking B41M3/10, D21F1/44; security printing B41M3/14; securities or banknotes characterised by colour effects B42D25/29, B42D25/30; testing paper currency or valuable papers for genuineness G07D7/00
• CPC Class Codes: D21H 27/32 with materials applied between the sheets attaching together paper or cardboard sheets B31F5/00; adhesives C09J
• CPC Class Codes: Y10T 428/24479 including variation in thickness
• CPC Class Codes: Y10T 428/24802 Discontinuous or differential coating, impregnation or bond [e.g., artwork, printing, retouched photograph, etc.]

Abstract

The invention relates to a process for the production of multi-layer security products and to a security product produced in accordance with the process. The process is distinguished by the fact that the various layers of the security product are produced substantially separately from one another as rolled materials and are provided with security features, and the individual rolled webs are led together and joined to one another in a common processing process. The security products produced in this way are laser-active and can therefore be personalized by means of a laser.

Claims

1. A multi-layer security product, comprising

a printable carrier material (1) firmly joined to at least one plastic coating which is extruded onto the carrier material and which contains laser-active pigments;

and

at least one covering film (17, 18), laminated onto the carrier material.

2. The multi-layer security product of claim 1, wherein the laser-active pigments can be excited substantially by laser radiation of a specific wavelength.

3. The multi-layer security product of claim 1, wherein the carrier material is comprised of paper or plastic.

4. The multi-layer security product of claim 1, further comprising security features, such as watermarks and/or mottled fibers on the carrier material.

5. The multi-layer security product of claim 1, wherein the covering film contains laser-active pigments.

6. The multi-layer security product of claim 1, wherein the plastic coating has embossing.

7. The multi-layer security product of claim 1, wherein the plastic coating is printed.

8. A process for the production of multi-layer security products said process comprising the steps of:

providing a printable carrier material as a rolled material;

a

extruding at least one plastic coating which contains laser-active pigments onto the carrier material; and

subsequently leading together highly accurately the carrier material with the plastic coating and (b) the covering film (17, 18).

9. The process of claim 8, wherein the carrier material with the plastic coating is rolled material and further providing the step of unwinding the rolled material after lamination.

10. The process of claim 8, further providing the step of stamping out individual blanks after the lamination with the covering film.

11. The process of claim 8, further providing the step of printing the carrier material in a single-stage or multi-stage process before the coating of the carrier material with the plastic coating

12. The process of claim 8, further providing the step of printing and/or embossing the plastic coating before the carrier material with the plastic coating is led together with the covering film and laminated.

13. The process of claim 8, wherein the carrier material comprises paper or plastic.

14. The process of claim 8, wherein the carrier material is equipped with security features, such as watermarks and/or mottled fibers.

15. The process of claim 8, wherein the covering film contains laser-active pigments.

16. The process of claims 8, wherein security features are produced in the plastic coating and/or the covering film by activating the laser-active pigments with laser radiation of specific wavelength matched to the laser-active pigment used.

17. The process of claim 16, wherein the security features produced by laser cannot at least to some extent, be personalized.

18. The process of claim 16, wherein the production of security features by laser in the plastic coating is carried out after the application of the plastic coating by extrusion and/or after the lamination of the at least one covering film.