transfer belt configured to transport an intermediate product on the underside of a transfer belt to a roller arrangement said roller arrangement comprising four rotatable rollers that are arranged and configured to interact in pairs in constellations that can be selectively modified wherein each of the four rollers has a rotational axis and the four rotational axes run at least approximately parallel to each other application_number US 66619905 A description the schematic representation in fig1 of part of an apparatus 10 for producing non woven fleece like fiber products shall be used to explain the part of fiber product manufacture of interest here the direction of transport is essentially from right to left as indicated by arrows a mixture of fibers to be processed by apparatus 10 u2014 possibly of different kinds u2014 and possible other elements of the desired fleece are fed in pre dosed form to a forming head 12 the function of forming head 12 is to achieve the maximum possible separation of fibers maximum uniformity of distribution of the fibers and any additional elements of the fleece on a forming belt or forming sieve 14 forming belt 14 is embodied like a sieve and is therefore permeable to air it transports the fibers as a fiber air mixture placed as uniformly as possible on forming belt 14 in the direction of transport from right to left as indicated by the arrow the fibers or fiber air mixture is sucked against forming belt 14 by a suction box 16 mounted under forming belt 14 suction box 16 is therefore open at the top and is provided with a connecting pipe.