Chip card comprising an imaged-receiving layer

• US 6,250,554 B1
• Filed: 06/14/1999
• Issued: 06/26/2001
• Est. Priority Date: 06/23/1998
• Status: Expired due to Term

• Current Assignee: Hanger Solutions, LLC (IP Investments Group LLC)
• Original Assignee: Agfa-Gevaert N.V.
• Inventors: Diane, Vertruyen, Michel, Boulonne, Walther, Wouters, Leo, Vermeulen
• Primary Examiner(s): Lee, Michael G.
• Assistant Examiner(s): LE, UYEN CHAU N
• Application Number:
  US09/332,118
• Time in Patent Office: 743 Days
• Field of Search: 235/487, 235/488, 235/383, 235/492
• US Class Current: 235/487
• CPC Class Codes: G06K 19/041 Constructional details G06K19/06 takes precedence

Abstract

According to the present invention there is provided an element comprising a contactless chip card and thereon a layer package comprising a transparent support, covered on the side facing the contactless chip card with a prelayer and on the other side with a protective layer, characterised in that between the transparent support and the prelayer there is an interlayer contiguous to the prelayer comprising a polyurethane and a cross-linking compound.

Claims

1. An element comprising a contactless chip card and thereon a layer package comprising a transparent support, covered on the side facing the contactless chip card with a prelayer and on the other side with a protective layer, wherein between the transparent support and the prelayer there is an interlayer contiguous to the prelayer comprising a polyurethane and a cross-linking compound, and said polyurethane is present in a range from 1 g/m² to 10 g/m².

4. An element according to claim 1, 2 or 3 wherein said polyurethane is a polyurethane polymer in the form of a dispersion of particles of polyurethane polymer with a viscosity at 23°

C. between 20 and 80 mPa.s at a shearing rate of 250 s<sup>−

1</sup>.

5. An element according to claim 4 wherein said polyurethane particles have a number average diameter ranging from 0.05 to 1 μ

m.

6. An element according to claim 1, 2 or 3 wherein said polyurethane has a molecular weight between 5,000 and 1,000,000.

7. An element according to claim 1, 2 or 3 wherein said cross-linking compound is selected from the group consisting of isocyanates and amidosiloxanes.

8. An element according to claim 1, 2 or 3 wherein said transparent support is a subbed transparent support.

9. An element according to claim 1, 2 or 3 wherein an imaged layer is present between the chip card and prelayer.

2. An element comprising a contactless chip card and thereon a layer package comprising a transparent support, covered on a side facing the contactless chip card with a prelayer and on the other side with a protective layer, wherein between the transparent support and the prelayer there is an interlayer contiguous to the prelayer comprising a polyurethane and a cross-linking compound, and said cross-linking compound is present in a range from 0.02 g/m² to 0.9 g/m².

3. An element comprising a contactless chip card and thereon a layer package comprising a transparent support, covered on a side facing the contactless chip card with a prelayer and on the other side with a protective layer, wherein between the transparent support and the prelayer there is an interlayer contiguous to the prelayer comprising a polyurethane and a cross-linking compound, and wherein said prelayer contains at least one gelatin species whereof a 10% by weight aqueous solution at 36°

C. and pH 6 has a viscosity ranging from 15 to 30 mPa.s at a shearing rate of 1000 s<sup>−

1</sup>.