Extrusion nozzle with insert element

An extrusion nozzle for an extrusion device for extruding plastic profiles, the extrusion nozzle comprising:

• at least one nozzle plate which has at least one flow channel for plastic melt,
• at least one insert element which is inserted into the at least one flow channel in order to reduce a cross-sectional area of the at least one flow channel through which the plastic melt can flow, and
• at least one holding device is arranged inside the at least one flow channel and is provided in the at least one flow channel, on which the at least one insert element is arranged, wherein:
• the at least one holding device forms a receptacle into which the at least one insert element can be inserted and the at least one insert element is held on the holding device along an extrusion direction along which the plastic melt can flow through the at least one flow channel;
• and
• the at least one holding device forms at least one undercut including an overhanging portion by means of which:
• the at least one insert element is positively fixed in a form fitting to the at least one holding device perpendicular to the extrusion direction along which the plastic melt can flow through the at least one flow channel;
• or
• the at least one insert element is wedge-shaped or conical shaped along the extrusion direction along which the plastic melt can flow through the at least one flow channel so that the insert element is held in the holding device in the extrusion direction in a form-fitting and force-fitting manner.