TRANSPONDER LABEL RESISTANT TO HIGH TEMPERATURES

• US 20150178613A1
• Filed: 12/11/2014
• Published: 06/25/2015
• Est. Priority Date: 12/19/2013
• Status: Active Grant

• Current Assignee: SCHREINER GROUP GMBH & CO. KG
• Original Assignee: SCHREINER GROUP GMBH & CO. KG
• Inventors: HOELZL, Gerhard, BECKER, Johannes
• Granted Patent: US 9,317,801 B2
• Time in Patent Office: Days
• US Class Current: 1/1
• CPC Class Codes: B32B 2037/243 Coating
• CPC Class Codes: B32B 2307/306 Resistant to heat
• CPC Class Codes: B32B 2519/00 Labels, badges
• CPC Class Codes: B32B 2519/02 RFID tags
• CPC Class Codes: B32B 37/12 characterised by using adhesives
• CPC Class Codes: B32B 37/24 with at least one layer not being coherent before laminating, e.g. made up from granular material sprinkled onto a substrate B32B37/15 takes precedence
• CPC Class Codes: B32B 38/10 Removing layers, or parts of layers, mechanically or chemically
• CPC Class Codes: G06K 19/02 characterised by the selection of materials, e.g. to avoid wear during transport through the machine
• CPC Class Codes: G06K 19/07722 the record carrier being multilayered, e.g. laminated sheets flat articles in general, see B32B37/00
• CPC Class Codes: G06K 19/0776 the adhering arrangement being a layer of adhesive, so that the record carrier can function as a sticker
• CPC Class Codes: G06K 19/07771 the record carrier comprising means for minimising adverse effects on the data communication capability of the record carrier, e.g. minimising Eddy currents induced in a proximate metal or otherwise electromagnetically interfering object

Abstract

A transponder label resistant to high temperatures includes a transponder arrangement, an adhesive layer for adhesively attaching the transponder label to an electrically conductive substrate, and a spacer layer on which the transponder arrangement is disposed, to space it apart from the conductive substrate. The adhesive layer and the spacer layer each have a material that is temperature-resistant, in such a manner that the size of a surface area of the transponder label, which area covers the conductive substrate after the transponder label is adhesively attached to the conductive substrate, remains unchanged when the transponder label, after having been adhesively attached to the conductive substrate, is heated from a starting temperature below 125° C. to a higher temperature between 125° C. and 400° C., and, after having been heated, is cooled down to the starting temperature.

Claims

1. A temperature-resistant transponder label comprising:

(a) a transponder arrangement having a chip and an antenna structure connected to the chip;

(b) a first adhesive layer for adhesively attaching the transponder label to an electronically conductive subsurface; and

(c) a spacer layer for spacing the transponder arrangement apart from the conductive subsurface, wherein the spacer layer has an underside, the first adhesive layer is disposed on the underside, and the transponder arrangement is disposed on the spacer layer;

wherein the spacer layer has a spacer layer material that is temperature-resistant so that a surface area of the transponder label covering the conductive subsurface after the transponder label has been adhesively attached to the conductive subsurface has a size that remains unchanged following heating of the transponder label from a starting temperature below 125°

C. to a higher temperature between 125°

C. and 400°

C. and, after heating, cooling of the transponder label to the starting temperature; and

wherein the first adhesive layer has a first adhesive layer material that is temperature-resistant so that loosening of the first adhesive layer from the conductive subsurface is prevented when the transponder label has been adhesively attached to the conductive subsurface and the transponder label, after having been adhesively attached to the conductive subsurface, is heated from the starting temperature to the higher temperature, and, after heating, is cooled down to the starting temperature.

2. The transponder according to claim 1, wherein the first adhesive layer material is temperature-resistant so that melting of the first adhesive layer is prevented when the transponder label has been adhesively attached to the conductive subsurface, and, after having been adhesively attached to the conductive subsurface, is heated from the starting temperature to the higher temperature, and, after heating, is cooled down to the starting temperature.

3. The transponder label according to claim 1, wherein the first adhesive layer material has an adhesive layer material expansion coefficient and the spacer layer material has a spacer layer material expansion coefficient and the adhesive layer material expansion coefficient and the spacer layer material expansion coefficient are coordinated with one another so that a tension between the first adhesive layer and the spacer layer is prevented, when the transponder label has been adhesively attached to the conductive subsurface, and, after having been adhesively attached to the conductive subsurface, is heated from the starting temperature to the higher temperature, and, after heating, is cooled down to the starting temperature.

4. The transponder label according to one of claim 1, wherein the spacer layer material is configured so that a crack within the spacer layer is prevented when the transponder label has been adhesively attached to the conductive subsurface, and, after having been adhesively attached to the conductive subsurface, is heated from the starting temperature to the higher temperature, and, after heating, is cooled down to the starting temperature.

5. The transponder label according to claim 1, wherein the spacer layer material contains at least one of a polyamide, a polytetrafluoroethylene, a polyurethane, and an acrylate.

6. The transponder label according to claim 1, wherein the spacer layer is configured as a panel that contains polyurethane.

7. The transponder label according to claim 1, wherein the first adhesive layer material contains at least one of an acrylate and a natural rubber.

8. The transponder layer according to claim 7, wherein the acrylate is a modified acrylate.

9. The transponder label according to claim 1, wherein the first adhesive layer has a thickness between 5 μ

m and 200 μ

m.

10. The transponder label according to claim 1, further comprising:

a transponder protection layer disposed above the transponder arrangement for protecting the transponder arrangement; and

a second adhesive layer that is disposed between the spacer layer and the transponder protection layer;

wherein the transponder protection layer contains a material that prevents a crack from occurring within the transponder protection layer when the transponder label has been adhesively attached to the conductive subsurface and, after being adhesively attached to the conductive subsurface, is heated from the starting temperature to the higher temperature, and, after heating, is cooled down to the starting temperature; and

wherein the second adhesive layer contains a second adhesive layer material that is temperature-resistant so that loosening of the transponder protection layer from the spacer layer and the transponder arrangement is prevented when the transponder label has been adhesively attached to the conductive subsurface, and, after having been adhesively attached to the conductive subsurface, is heated from the starting temperature to the higher temperature, and, after heating, is cooled down to the starting temperature.

11. The transponder label according to claim 10, further comprising:

a paint protection layer disposed above the transponder protection layer for protecting the transponder protection layer during painting over the transponder label; and

a third adhesive layer that is disposed between the paint protection layer and the transponder protection layer;

wherein the third adhesive layer contains a third adhesive layer material that is temperature-resistant so that loosening of the paint protection layer from the transponder protection layer is prevented when the transponder label has been adhesively attached to the conductive subsurface, and the conductive subsurface is heated from the starting temperature to the higher temperature, and, after heating, is cooled down to the starting temperature.

12. The transponder label according to claim 11, wherein the transponder protection layer is imprintable or inscribable by a laser.

13. The transponder label according to claim 11, wherein the first adhesive layer has a first adhesive strength, the second adhesive layer has a second adhesive strength and the third adhesive layer has a third adhesive strength;

wherein the third adhesive strength is lower than the second adhesion strength; and

wherein the third adhesion strength is lower than the first adhesion strength.

14. The transponder label according to claim 1, wherein the antenna structure has a first part that is disposed on a top side of the spacer layer, and a second part, electrically or mechanically connected with the first part, and is disposed on the underside.

15. A method for marking an electrically conductive subsurface to be painted with a transponder label, said method comprising the following steps:

(a) providing a temperature-resistant transponder label comprising a transponder arrangement having a chip and an antenna structure connected to the chip, a first adhesive layer for adhesively attaching the transponder label to an electrically conductive subsurface, and a spacer layer for spacing the transponder arrangement apart from the conductive subsurface, wherein the spacer layer has an underside, the first adhesive layer is disposed on the underside, and the transponder arrangement is disposed on the spacer layer, wherein the spacer layer has a spacer layer material that is temperature-resistant so that a surface area of the transponder label covering the conductive subsurface after the transponder label has been adhesively attached to the conductive subsurface has a size that remains unchanged following heating of the transponder label from a starting temperature below 125°

C. to a higher temperature between 125°

C. and 400°

C. and, after heating, cooling of the transponder label to the starting temperature, and wherein the first adhesive layer has a first adhesive layer material that is temperature-resistant so that loosening of the first adhesive layer from the conductive subsurface is prevented when the transponder label has been adhesively attached to the conductive subsurface and the transponder label, after having been adhesively attached to the conductive subsurface, is heated from the starting temperature to the higher temperature, and, after heating, is cooled down to the starting temperature.

(b) adhesively attaching the transponder label to the conductive subsurface to be painted via the first adhesive layer;

(c) applying a paint layer to the conductive subsurface;

(d) painting over the transponder label with the paint layer; and

(e) heating the paint layer to a temperature between 125°

C. and 400°

C. to dry the paint layer.

16. The method according to claim 15, further comprising:

providing the transponder label having the paint protection layer; and

removing the paint protection layer from the transponder label after drying the paint layer.