Disclosed is a device for forming an extended nip between a counter roll and a shoe roll for machining a material web, wherein the shoe roll has a support and a flexible roll shell, which can rotate around the support (4) and which rests in the region of the extended nip upon a head surface of a press shoe guided on the support, and the press shoe displaceably rests on the support in order to generate a press pressure via a pressure chamber to which fluid can be applied, the pressure chamber is disposed as a pressure pad, on which the press shoe rests surficially on the rear side, wherein the pressure pad is inserted into a groove-like chamber, wherein the press shoe has a stamp-like section on the rear side, which stamp-like section descends into an invaginable pressure pad in order to perform reciprocating movements, and the pressure pad is guidedly supported on the groove-like chamber along a pressure pad lateral wall that forms a roll wall.

A papermaking fabric for fibrous web forming or processing machines extends in MD and CD-directions and includes top and bottom fabric layers bound by binder yarns. The top layer is a web contacting side with top weave structures having interwoven first MD and first CD-yarns. The bottom layer is a machine contacting side with bottom weave structures having interwoven second MD and second CD-yarns. The top weave structure has repeats and forms fiber compression areas and fiber support areas recessed in thickness direction of the fabric relative to the fiber compression areas on the web side and fiber support areas separated by fiber compression areas or vice versa. A fiber compression area has adjacent top MD-floats on the web side or adjacent top CD-floats on the web side and a fiber support area has first MD and first CD-yarns interwoven in plain weave.

The invention relates to an extended nip roll 1 for use in a nip N through which a fibrous web W is to be passed. The roll has two axial ends 3, 4 and comprises a support beam 5 having an axial extension between the axial ends 3, 4 of the extended nip roll and a press body 6 with an axial extension and which press body 6 is substantially parallel with the support beam 5 as well as means 7 supported by the support beam 5 for causing the press body to move or expand radially outwards towards a counter roll 2 to form a nip N. The inventive roll also comprises a tubular flexible jacket 8 with two axial ends 12, 13, the tubular flexible jacket 8 forming a loop around the press body 6 and the support beam 5. At each end of the extended nip roll 1, there is an end wall 9, 10 which is rotatably journalled to allow each end wall 9, 10 to rotate about the support beam 5. Each end wall 9, 10 being attached to an axial end 12, 13 of the tubular flexible jacket 8 such that the end walls 9, 10 and the tubular flexible jacket 8 form together an enclosed space 14. On the support beam 5, there is at least one support element 15 for the tubular flexible jacket 8 which support element 15 is arranged to support a part of the tubular flexible jacket 8 at a location spaced away from the press body 6. According to the invention, the at least one support element 15 is arranged to be movable in a circumferential direction such that it can be moved to different positions along the circumference of the tubular flexible jacket 8.

An extended nip press apparatus (1) for removing water from a web (20), comprising a rotatable backing roll (2), an elongated press device (3, 30) cooperating with the backing roll for defining between the elongated press device (3, 30) and the backing roll (2) an extended nip (4). The elongated press device is provided with a perforated belt (5, 50). A moveable, permeable carrying medium (6a) is arranged to be passed through the extended nip, and to support on a surface thereof a web 20. A mechanical pressure is created between the backing roll (2) and the elongated press device in the extended nip, and a vacuum is applied to the extended nip through the elongated press device, thereby both a mechanical pressure and a vacuum is applied to a web (20) being passed through the extended nip (4) on the carrying medium (6a).

An extended nip press apparatus (1) for removing water from a web (20), comprising a rotatable backing roll (2), an elongated press device (3, 30) cooperating with the backing roll for defining between the elongated press device (3, 30) and the backing roll (2) an extended nip (4). The elongated press device is provided with a perforated belt (5, 50). A moveable, permeable carrying medium (6a) is arranged to be passed through the extended nip, and to support on a surface thereof a web 20. A mechanical pressure is created between the backing roll (2) and the elongated press device in the extended nip, and a vacuum is applied to the extended nip through the elongated press device, thereby both a mechanical pressure and a vacuum is applied to a web (20) being passed through the extended nip (4) on the carrying medium (6a).

A method of forming a fibrous web on a papermaking machine including the steps of depositing a dilute fiber slurry out of a headbox to a forming area comprising a forming surface made up of a structured fabric, wherein the structured fabric is supported by a breast roll and a forming roll, and the forming area is devoid of any additional fabrics or belts other than the structured fabric, draining the dilute fiber slurry through the structured fabric, and drying the fiber slurry.

The present invention relates to a support body (50) for a paper machine having an extended nip formed between the support body and a counter-pressure member, wherein the support body comprisesa base body (51) comprising an upper surface facing in the first direction, a cover body (52) comprising a working surface (15) for forming an extended nip with a counter-pressure member, wherein the cover body (52) is mounted on the upper surface of the base body (51) such that the working surface faces in the first direction, and wherein the cover body (52) comprises a first material, said first material being a polymer. The invention also relates to a paper machine comprising a support body (50).