curved guide surface of the guide ledge 112 is substantially tangent to the circular path of travel of the press shell the guide ledge 112 can have transverse holes or recesses so that the cooling liquid inside the press shell that is carried along by the press shell can pass by the guide ledge 112 in the circumferential direction fig3 shows a three roll press section having three press rolls 35 5 and 15 arranged one above the other the paper web 20 first passes through the lower press nip together with two felt belts 21 and 41 the lower felt belt 41 then separates from the paper web 20 and the web travels together with the upper felt belt 21 upward around the roll 5 and through the second press nip the second nip is developed as an elongate press nip as in fig1 and 2 i e the upper press roll 15 corresponds essentially to the long nip press roll shown in fig1 for this reason all parts of the press roll 15 in fig3 which are developed the same or at least approximately the same as corresponding elements in fig1 have been provided with the same reference numbers the arrangement in fig3 is established so that the direction of action of the press shoe 3 of the long nip press roll 15 extends obliquely downward as can be seen the paper web travels obliquely upward through the elongate press nip after emergence from that press nip it remains adhered to the press shell 4 until it is removed from the press roll 15 in the downward extending region of the press shell 4 by means of a.