Multilayered body comprising an electroconductive polymer layer and method for the production thereof

• US 8,388,790 B2
• Filed: 07/19/2007
• Issued: 03/05/2013
• Est. Priority Date: 07/21/2006
• Status: Active Grant

• Current Assignee: Leonhard KURZ Stiftung & Company KG
• Original Assignee: Leonhard KURZ Stiftung & Company KG
• Inventors: Schindler, Ulrich, Lehnberger, Walter
• Primary Examiner(s): Osele, Mark A
• Assistant Examiner(s): HARM, NICKOLAS R
• Application Number:
  US12/309,517
• Publication Number:
  US 20100078065A1
• Time in Patent Office: 2,056 Days
• Field of Search: None
• US Class Current: 156/239
• CPC Class Codes: B32B 2307/202 Conductive
• CPC Class Codes: B32B 2307/204 Di-electric
• CPC Class Codes: B32B 2457/12 Photovoltaic modules
• CPC Class Codes: B32B 2519/02 RFID tags
• CPC Class Codes: B32B 37/02 characterised by a sequence of laminating steps, e.g. by adding new layers at consecutive laminating stations
• CPC Class Codes: B32B 37/025 Transfer laminating
• CPC Class Codes: B32B 37/203 One or more of the layers being plastic
• CPC Class Codes: Y10T 156/1041 Subsequent to lamination
• CPC Class Codes: Y10T 428/24413 Metal or metal compound
• CPC Class Codes: Y10T 428/24802 Discontinuous or differential coating, impregnation or bond [e.g., artwork, printing, retouched photograph, etc.]
• CPC Class Codes: Y10T 428/24909 Free metal or mineral containing
• CPC Class Codes: Y10T 428/31678 Of metal
• CPC Class Codes: Y10T 428/31855 Of addition polymer from unsaturated monomers

Abstract

There is described a process for the production of a multilayer body (4) having an electrically conductive layer (42₁) arranged on a carrier layer (41), in which there is provided a transfer film (5) having a transfer layer (52) of an electrically conductive polymer. The electrically conductive layer is transferred from the transfer film (5) on to the multilayer body (4). There are also provided a transfer film and a multilayer body produced in accordance with the process.

Claims

1. A process for the production of a multilayer body the process comprising the steps of:

providing a transfer film with a discontinuous transfer layer having an electrically conductive polymer;

transferring the transfer layer from the transfer film on to a carrier layer; and

subjecting the transfer layer to a thermal pressing tool, whereby the transfer layer undergoes film-forming in the step of transferring the transfer layer on to the carrier layer due to the action of heat and/or the action of pressure and/or chemical reaction and is joined to the carrier layer to form a multilayer body having an electrically conductive layer arranged on a carrier layer.

2. A process as set forth in claim 1, wherein the transfer layer is in the form of a polymer transfer layer.

3. A process as set forth in claim 1, wherein the electrically conductive polymer of the transfer layer is concentrated in domains.

4. A process as set forth in claim 1, wherein one or more mutually superposed transfer layers are transferred by structured embossing of the carrier layer during said transferring step.

5. A process as set forth in claim 4, wherein, to produce gradients in respect of the resistance along the surface normal of the electrically conductive layer, a plurality of the transfer layers are used, each transfer layer having a different electrical conductivity.

6. A process as set forth in claim 1, wherein the conductive layer of the transfer film is embedded in other layers or is enclosed by other layers which in turn has different properties.

7. A process as set forth in claim 1, wherein the transfer layer of the transfer film comprises PEDOT/PSS.

8. A process as set forth in claim 7, wherein the transfer layer comprises PEDOT/PSS in a weight ratio of between 1:

20 and 1;

1.

9. A process as set forth in claim 1, wherein the transfer film comprises a plurality of regions of the transfer layer which are removed.

10. A process as set forth in claim 1, wherein the transfer layer of the transfer film has one or more layers comprising an electrically conductive polymer and one or more electron-conducting layers.

11. A process as set forth in claim 10, wherein, to provide the electron-conducting layer, a layer of silver, gold, copper, titanium, aluminum or a combination of those metals is applied by sputtering and/or vapor deposition.

12. A process as set forth in claim 10, wherein, to provide the electron-conducting layer, an electrically conductive paste is applied to the transfer layer by means of intaglio printing and/or screen printing and/or coating.

13. A process as set forth in claim 1, wherein the transfer layer is provided as a dried dispersion having the electrically conductive polymer such that the transfer layer does not form a continuous coherent film.

14. A process as set forth in claim 13, wherein the step of providing the transfer film comprises the steps of:

spreading a dispersion having the electrically conductive polymer on a carrier film; and

drying the dispersion to form the discontinuous transfer layer of the transfer film.