Electrically heatable heating disk for exhaust gas aftertreatment

A heating disk for heating up a stream of exhaust gas comprising:

• a carrier shell;
• a plurality of smooth and corrugated metal layers stacked on top of one another to form a plurality of stacks of layers;
• a honeycomb body wound from the plurality of smooth and corrugated metal layers and located within the carrier shell;
• an electrical contact structure extending through a feedthrough defined by the carrier shell and via which the honeycomb body can be connected to a current source;
• a contact strip of the electrical contract structure located in a region enclosed by the carrier shell and extending in the circumferential direction of the carrier shell;
• an insulating region formed between the carrier shell and the contact strip;
• a radially outwardly extending bulge formed as part of the carrier shell, the contact strip and the insulating region received into the radially outwardly extending bulge;
• wherein each of the plurality of stacks of layers are electrically insulated from one another, arranged directly adjacent to one another, and connected electrically conductively to the contact strip, wherein each are formed from the plurality of smooth metal layers and corrugated metal layers.