together one passing over a roll 7 and one over a cylinder in particular the wire belt 2 passes over the forming cylinder 1a while the wire belt 3 passes over a breast roll 7 so that at the beginning of the twin wire zone the two wire belts form with each other a wedge shaped entry nip 8 for the fiber suspension from the headbox the forming cylinder 1a is arranged within the loop of the endless wire belt 2 a device 9 in the illustrated embodiment comprises a supporting frame 18 the compliantly supported pressure elements 10 pass on forces to the belt loop inner surface of the wire belt 3 in the area of its wrap on the forming cylinder 1a the device 9 is arranged within the loop of the endless wire belt 3 the compliantly supported pressure elements 10 are preferably configured as in u s pat no 5 078 835 each element may be designed as a strip 12 that extends along the cylinder 1a and across the web fig2 it may be designed as a roller and the pressure element is then preferably a metering rod 14 fig3 a further possibility is to use a pressing shoe 15 as the pressure elements having a concavely shaped pressing surface against the wire belt fig4 the compliantly supported pressure elements 10 direct forces which are produced for example.