Device for forming an even or profiled fleece or an even or profiled flocked fibre mat, with: a material discharge device (2, 76, 84) which produces a fleece or a flocked fibre mat of a predetermined width; a transport device (4, 10) provided on the output side of the material discharge device (2, 76, 84) for transporting the fleece or flocked fibre mat further on in a transport direction; a measuring device for measuring the weight per unit area of the fleece or flocked fibre mat over its width running transversely to the transport direction in a measuring region of the transport device (4, 10) for determining a transverse profile and longitudinal profile of the fleece or flocked fibre mat; a profile changing device in a profile changing region downstream of the measuring region, wherein the profile changing device has a supply device for supplying suspended fibres or flocked fibres to the fleece or the flocked fibre mat and/or a removal device for removing the suspended fibres or flocked fibres from the fleece or from the flocked fibre mat; and a control or regulating device which is set up to control the profile changing device on the basis of the results from the measuring device so that for evening out the fleece or flocked fibre mat the profile changing device supplies suspended fibres or flocked fibres to the identified thin spots of the fleece or the flocked fibre mat, or removes suspended fibres or flocked fibres from the identified thick spots of the fleece or flocked fibre mat, or that in order to form a desired uneven transverse profile and/or longitudinal profile of the fleece or flocked fibre mat with thin spots and thick spots the profile changing device supplies or removes suspended fibres or flocked fibres in targeted manner. a material discharge device (2, 76, 84) which produces a fleece or a flocked fibre mat of a predetermined width; a transport device (4, 10) provided on the output side of the material discharge device (2, 76, 84) for transporting the fleece or flocked fibre mat further on in a transport direction; a measuring device for measuring the weight per unit area of the fleece or flocked fibre mat over its width running transversely to the transport direction in a measuring region of the transport device (4, 10) for determining a transverse profile and longitudinal profile of the fleece or flocked fibre mat; a profile changing device in a profile changing region downstream of the measuring region, wherein the profile changing device has a supply device for supplying suspended fibres or flocked fibres to the fleece or the flocked fibre mat and/or a removal device for removing the suspended fibres or flocked fibres from the fleece or from the flocked fibre mat; and a control or regulating device which is set up to control the profile changing device on the basis of the results from the measuring device so that for evening out the fleece or flocked fibre mat the profile changing device supplies suspended fibres or flocked fibres to the identified thin spots of the fleece or the flocked fibre mat, or removes suspended fibres or flocked fibres from the identified thick spots of the fleece or flocked fibre mat, or that in order to form a desired uneven transverse profile and/or longitudinal profile of the fleece or flocked fibre mat with thin spots and thick spots the profile changing device supplies or removes suspended fibres or flocked fibres in targeted manner.