SE0000823L - Machine for making a paper or cardboard web and press portion therein - Google Patents

Abstract

A paper or cardboard machine includes a press section having a wet calender, arranged between second and third presses and including a first roll nip, formed by first calender roll arranged in a loop of transfer belt, and a second calender roll arranged outside the transfer belt. A paper or cardboard machine comprises a forming section, a press section, a drying section (6), and an impermeable transfer belt (69). The press section includes at least three presses (52, 60, 63), each having two press rolls (53, 54; 61, 62; 64, 65) cooperating with each other to form a press nip, in which the first press roll of the second press consists of a smooth press roll, with a smooth envelope surface, and in which the third press has a press felt, running in a loop around a roll and the second press roll in the third press. The impermeable transfer belt is running in a loop around guide rolls (70) and in contact with the smooth press roll of the second press and in contact with the press felt of the third press to transfer the web from the second press to the third press. The press section includes a wet calender, arranged between the second and third presses and including a first roll nip, formed by a first calender roll (79), arranged in the loop of the transfer belt, and a second calender roll (80), arranged outside the loop of the transfer belt, and the transfer belt and the web running together through the first roll nip in the wet calender.