A PAPER MAKING MACHINE FOR MAKING TISSUE PAPER AND A METHOD OF OPERATING A PAPER MAKING MACHINE

摘要

The invention relates to a paper making machine for making tissue paper. The machine comprises a former (2)and a press (11) with a first press member (12) and a second press member (13) arranged to form a dewatering nip (PN) with the first press member (12). A felt (7) is arranged to pass through the dewatering nip (PN). A drying cylinder (14) is arranged to form a transfer nip (TN) with the first press member (12) and a belt (15) forming a loop around the first press member (12) such that the belt (15) passes through the dewatering nip (PN) and the transfer nip (TN). The first press member (12) is an extended nip roll that has a flexible jacket (17) that forms a loop and a flexible support body (18) within the loop of the flexible jacket (17). The flexible support body (18) can be caused to press the flexible jacket (17) radially outwards and the flexible support body (18) is placed opposite the drying cylinder (14) such that the flexible support body (18) can press the flexible jacket (17) towards the drying cylinder (14) to close the transfer nip (TN). The paper machine also comprises a mechanical stop arranged to halt a closing movement of the first press member (12). The invention also relates to a method of operating the machine.