Heatable film

The foil (1) has an electrically conductive layer (2) including plastic material with electrical conductive additives in sub-areas. The additives are arranged and distributed such that maximum surface resistance of a surface (3) of the layer is 50 ohm per centimeter. A portion of the additives ranges from 20 to 50 percent of weight of the layer. The plastic material has a mixture of conductive soot and conductive material i.e. metal powder, as the additives. The plastic material consists of a polyurethane paste or PVC paste provided with an electrically conductive additive. Independent claims are also included for the following: (1) a seat heater for a seat of a motor vehicle (2) a method for the production of an electrical conductive layer for a plastic foil. Elektrisch heizbare Kunststoff-Folie (1) mit einer elektrisch leitfähigen Schicht (2), die elektrisch leitfähige Additive enthält, wobei die Additive so angeordnet und verteilt sind, dass auf mindestens einer der Oberflächen der elektrisch leitfähigen Schicht der maximale Oberflächenwiderstand 50 Ohm /cm beträgt.