Honeycomb body for a catalyst for an aftertreatment of exhaust gas, and method for producing same

A method for producing a honeycomb body, comprising:

• stacking a plurality of metal foils on top of each other to form a layer stack;
• winding the layer stack about at least one point of rotation,
• wherein at least some metal foils have an at least partial structuring, by which flow channels are formed between respective individual layers, through which flow channels gas can flow in a main flow direction from a gas inlet side of the honeycomb body to a gas outlet side of the honeycomb body, the flow channels extend over a first sub-portion and a second sub-portion substantially without interruption;
• producing the first sub-portion and the second sub-portion by a cut through the wound layer stack with linearly extending flow channels, the cut forming an interface between the first sub-portion and the second sub-portion;
• wherein the linearly extending flow channels are arranged parallel to a central center axis extending in an axial direction is divided into the first sub-portion and the second sub-portion by the cut at an angle to a center axis;
• bringing the first sub-portion and the second sub-portion together at the interface rotated relative to one another about the center axis through a rotation angle, wherein the first sub-portion and the second sub-portion are positioned at an angle relative to one another;
• and
• connecting the first sub-portion and the second sub-portion together permanently in a gas-tight manner.