Patent ID: 9560697
Date: 2017-01-31
CPC Classifications: A61K,B32B,C09J,H01C,H05B,Y10T

Claim:
1. A planar element having a first self-adhesive side face and a second adhesive side face, the planar element featuring a layer sequence comprising a heating layer, a contacting layer, and an adhesive layer; wherein the planar element is backing-free and flexible; wherein the heating layer is in contact, and in electrically conducting communication, with a first side face of the contacting layer; wherein the adhesive layer is in contact with a second side face of the contacting layer; wherein the heating layer is composed of an intrinsically heatable first self-adhesive designed as a posistor which heats up when an electric current is passed through; wherein the heating layer has a thickness of 20-200 μm; wherein the adhesive layer is composed of a second self-adhesive; wherein the contacting layer is an at least substantially two-dimensionally extended perforate contacting element; wherein the contacting layer is the only contacting layer in the planar element; wherein the contacting layer has a thickness of less than 20 μm; wherein the contacting layer consists of a conductive varnish, conductive ink, or conductive printing ink.