Polycarbonate-based security documents and/or documents of value with a hologram in the card body

Patent metadata

Field	Value
Publication number	US-9551975-B2
Application number	US-201314422762-A
Country	US
Kind code	B2
Filing date	Aug 19, 2013
Priority date	Aug 23, 2012
Publication date	Jan 24, 2017
Grant date	Jan 24, 2017

Abstract

The invention relates to polycarbonate-based or copolycarbonate-based security documents and/or documents of value which contain at least one hologram integrated in the card body, and to a method for producing such security documents and/or documents of value.

First claim

The invention claimed is:

1. A document of security and/or value, comprising at least one layer (A 1 ) comprising at least a polycarbonate or a copolycarbonate, at least one further layer (A 2 ) comprising at least a polycarbonate or a copolycarbonate, and at least one layer (P) comprising at least one photopolymer formulation and incorporating a hologram, wherein the layer (P) is arranged over a partial area between layers A 1 and A 2 , and the layers A 1 and A 2 , of which at least one layer is of transparent design, are joined at least sectionally to one another, wherein at various locations the layer P has multiple isolated holes and wherein the holes are located in unexposed locations, and the two layers A 1 and A 2 are at least sectionally joined at these holes, wherein the document has at least one layer (K) having corresponding recesses at the same points as the layer (P), which comprises at least one adhesive.

2. The document of security and/or value as claimed in claim 1 , wherein the adhesive in layer K comprises at least one hotmelt adhesive.

3. The document of security and/or value as claimed in claim 1 , wherein the adhesive in layer K comprises at least one hotmelt adhesive selected from thermoplastic polyurethanes.

4. The document of security and/or value as claimed in claim 1 , wherein the two layers A 1 and A 2 are at least sectionally joined around the layer P.

5. The document of security and/or value as claimed in claim 1 , wherein the hologram is a volume hologram.

6. The document of security and/or value as claimed in claim 1 , wherein a writing monomer in the photopolymer formulation comprises at least one monofunctional and/or one polyfunctional urethane (meth)acrylate.

7. The document of security and/or value as claimed in claim 1 , wherein the document is a document of identification.

8. The document of security and/or value as claimed in claim 1 , wherein a layer S comprising at least a polycarbonate or a copolycarbonate is located between the layer P and the layer A 1 or A 2 , which optionally has no contact to the layer K.

9. A method for producing a document of security and/or value as claimed in claim 1 , comprising forming a layer stack of at least the layers A 1 , P, A 2 , and K, positioning the layers P and K only over a partial area between the layers A 1 and A 2 , and laminating the layer stack to form a document of security and/or value.

10. The method as claimed in claim 9 , further comprising punching recesses into the layers P and K before forming the layer stack.

11. The method as claimed in claim 9 , wherein the layers A 1 and A 2 protrude areally around over the layers P and K.

12. The method as claimed in claim 9 , wherein the layer P is applied to a substrate layer S comprising at least a polycarbonate or a copolycarbonate and in the layer stack, one of the two layers, A 1 or A 2 , is joined over a partial area to the layer K, and the other of the two layers, A 1 or A 2 , are joined at least sectionally to the substrate layer S.

13. The document of security and/or value as claimed in claim 1 , wherein the layer K has a coating weight of 10 g/m 2 to 100 g/m 2 .

14. The document of security and/or value as claimed in claim 1 , wherein the layer K has a coating weight of 10 g/m 2 to 100 g/m 2 , and wherein the holes comprise holes of various geometry.

Assignees

• Bayer Materialscience Ag
• Covestro Deutschland Ag

Inventors

• Weiser Marc-Stephan
• Tziovaras Georgios
• Fäcke Thomas
• Bruder Friedrich-Karl
• Hönel Dennis
• Berneth Horst
• Rölle Thomas

Classifications

• G03H1/0252

  Laminate comprising a hologram layer · CPC title

• B32B2425/00

  Cards, e.g. identity cards, credit cards · CPC title

• B32B2307/412

  Transparent · CPC title

• B32B37/12

  characterised by using adhesives · CPC title

• B32B27/365

  comprising polycarbonates · CPC title