comprises a frame 1 in which a pre compressor 2 formed by a lower endless conveyor belt 3 and an upper endless pre compression belt 4 arranged above the lower belt 3 is supported the lower belt 3 and the upper pre compression belt 4 are forming a gap narrowing in a transport direction of the pre compressor 2 the transport direction of the belts 3 and 4 is indicated in the drawing by arrows a compacting device designated by 20 is arranged downstream of the pre compressor 2 in the frame 1 said compacting means comprising a roller pair of a lower compacting roller 5 and an upper compacting roller 7 each rotatably supported by the frame 1 the rollers 5 and 7 are driven by means of a motor and the distance between the two rollers 5 and 7 is adjustable which is indicated by a double arrow on the upper roller 7 in order to be able to cope with different thicknesses of the un needled fleece web supplied thereto the roller 7 may preferably be lifted off the overall arrangement e g for maintenance purposes the rollers 5 and 7 are each provided with all steel armaments on their circumference said armaments consisting of a wire provided with a toothing said wire being wound onto the roller periphery rollers of this type are known as carding rollers on the discharge side of the roller pair 5 and 7 a supply roller pair is rotatably supported said roller pair comprising of a lower supply roller 8 and an upper supply roller 9 the.