Ventilation flap arrangement, method for the production thereof and embossing die used in this method

A method of producing a ventilation flap arrangement, comprising the following method steps:

• providing one of the group comprising one and a plurality of flexible cover flaps,
• providing a frame for holding the cover flaps, wherein the frame has a receiving groove for a cover flap, the receiving groove being formed by two side cheeks,
• inserting an edge of the cover flap between the two side cheeks of the receiving groove of the frame, and
• non-detachably connecting the cover flap with the receiving groove by embossing,
• wherein the embossing operation is carried out in such a way that
• the cover flap is acted upon in a clamping manner only in its longitudinal-edge clamping area, and
• on both sides of the longitudinal-edge clamping area of the cover flap, the at least one side cheek projects, with in each case one embossed projection, in one of the group comprising one and a plurality of openings formed close to the longitudinal edge without applying a clamping force.