the hardness becomes softer during operation of the roll by 4 to 5 p amp j points lower roll 16 which comes into contact with felt 9 can also be in the embodiment of a suction press roll to increase the dewatering efficiency in this case roll 16 is connected to a vacuum system which is not illustrated here opposite element 17 of the second press zone may be in the embodiment of a smooth and or hard roll the surface of this roll is provided by a roll cover whereby the thickness of the cover is approximately 15 mm the surface has a hardness in the range of 0 to 1 p amp j the line force of the second press zone 15 2 may be in a range of 20 kn m to 90 kn m depending on the configuration of press zone 15 2 the maximum pressing pressure is in the range between 2 to 3 5 mpa important influential parameters are softness of clothings 8 9 and rolls 16 17 17 u2032 as well as their diameters the maximum pressing pressure of second press zone 15 2 is greater than the maximum pressing pressure of first press zone 15 1 an additional embodiment provides that opposite element 17 u2032 of second press zone 15 2 conspires with opposite element 13 of first press zone 15 1 thereby forming the second press zone in cooperation with opposite element 13 of the first press zone beside the first and second press nip 15 2 which is formed by.