Abstract: An extended nip press apparatus is disclosed for pressing water from a web. The apparatus includes a press frame and a backing roll rotatably secured to the frame. An elongate shoe is connected to the frame, the shoe being movable relative to the roll. The shoe defines a concave surface having a lubricant thereon. The concave surface cooperates with the roll for defining therebetween an extended nip. An endless blanket having a first and a second lateral edge is slidable relative to the shoe, the blanket extending contiguously with the web through the nip such that the web is disposed between the blanket and the roll for pressing water from the web. First and second beads are connected to the first and second edges respectively, the beads extending continuously around the respective edges.

Abstract: A method and a device for controlling a paper web which is leaving a press nip in the press section of a paper-making machine. The paper web is intended to follow a felt after the press nip. Control of the paper web is achieved in accordance with the teachings of the invention by preventing air admission to the side of the felt facing away from the paper web during the expansion phase of said felt after the press nip, whereby a pressure is generated, sucking the paper web against the felt. Air admission to the felt is prevented by means of an impermeable belt which is arranged to travel in a separate loop at the same speed as the felt. The belt extends closely adjacent the felt against the side thereof facing away from the web through one or several press nips and over a distance following said press nip/nips.

Abstract: In a press for papermaking comprising in combination, a pair of elongated rollers arranged one to another to provide an adjustable elongated nip therebetween, each of the rollers comprising a substantially rigid elongated shaft and a substantially rigid elongated sleeve overlying and rotatably supported upon the elongated shaft, the respective shafts extending outboard of the respective sleeve to provide two pairs of parallel spaced shaft outboard portions, the improvement comprising, in the case of each roller, providing a circumferentially extending running fit between the outer surface of the shaft and the inner surface of the sleeve defining an elongated annular chamber extending lengthwise of the sleeve. Other embodiments are disclosed which include the shaft being tubular and pressurized, lubricant in the annular chamber and a cable system for urging the rollers together. A splashguard is also provided for preventing water on the surface of the rollers from rewetting the paper.

Abstract: The invention relates to a press felt for the transportation of a web and for the dewatering thereof in a press part of a paper machine. The press felt comprises at least one needled flock layer formed by fibres. In order to eliminate the re-wetting and the blow effect, a surface layer is formed on or partially within the flock layer at least on one side of the felt. The permeability of the surface layer is substantially lower than that of the rest of the felt beneath the surface layer. The surface layer can be formed by a plastic material applied on the flock layer.

Abstract: An arrangement for equalizing the compression pressure acting on a web passing through a paper machine press nip formed by two opposed press rolls and through which of at least one press fabric passes. At least one resilient loop component passes through the press nip, the resilient loop component having an outer surface facing the web whose hardness is within the range of between 10 to 80 P & J by means of which smallsize variations in the compression pressure acting on the web in the range of up to about 6 mm are equalized. The resilient loop component has a framework layer within its thickness whose hardness is substantially greater than the hardness of the outer surface which faces the web by means of which larger variations in the compression pressure acting on the web are equalized. A press section incorporating the arrangement is also disclosed.

Abstract: A method for controlling the transverse thickness profile of paper or other web-like product by controlling temperature, including the axial temperature profile, of the mantle of a roll forming a nip with another roll in the manufacture of the paper or other web-like product includes forming a layer of heat transfer liquid on the inner surface of the mantle under the effect of the centrifugal forces generated by the rotation of the mantle, the layer of heat transfer liquid being divided into separate annular sections, and controlling the temperature of the heat transfer liquid layer of each of the sections. A roll in accordance with the invention includes a cylindrical outer mantle rotatably mounted at its axial ends, a stationary inner shaft situated within the mantle and partitions for dividing a layer of heat transfer liquid formed on the inner surface of the mantle into a plurality of separate annular sections.

Abstract: A guiding apparatus is disclosed for guiding an extended nip press blanket relative to a pressing shoe. The apparatus includes a nose member which is pivotally-connected to the shoe for guiding the blanket relative to the shoe. An actuator is secured to the shoe for pivoting the nose member relative to the shoe. A connector extends between the actuator and the nose member for connecting the actuator to the nose member such that when the actuator is actuated, the nose member is skewed relative to the shoe so that the blanket is guided laterally relative to the shoe as the blanket moves over, and in contact with, the nose member.

Abstract: An extended nip press for a paper machine for removing water from a wet paper, cardboard or similar fibrous or porous web. The press comprises a rotating press roll and at least one loading shoe, which is pressed against the press roll so as to form an extended press zone. The loading shoe may pivot around an axis parallel to the axis of the press roll. The web to be dewatered is passed through the pressing zone together with at least one felt that receives water. The loading shoe is supported onto the support frame by the intermediate of a support means. The center of gravity of the support force applied by the support means to the shoe is displaceable in the direction of running of the web to be dewatered for the purpose of adjustment of the pressure pattern produced in the press zone when different paper qualities are run.

Abstract: In an extended nip proess including a stationary support member, a hydraulically actuatable press shoe supported on and extending along the support member and a rotatable counter-roll opposed to and extending along the direction of the press shoe, there is a flexible, tubular press jacket which rotates around the support member and which is sealed so as to be inflatable by air. Before rotation of the counter-roll starts, the press jacket is air inflated and expands to partially wrap around the counte-roll. After rotation of the counter-roll and the press jacket begins, and only after a set minimum velocity has been exceeded, then the press shoe is fluid pressurized against the press jacket. At the time, the air pressure in the press jacket is reduced. Various control devices control the feed of pressure liquid to the press shoe and the feed of air to the press jacket until and then after a minimum speed level is exceeded.

Abstract: Dry laid board comprising peat moss is provided and made by harvesting peat moss having a degree of decomposition of H-1 value as measured by the Modified Von Post Scale, individualizing the harvested peat moss, drying the individualized peat moss and entraining the peat moss in a gas stream. The entrained peat moss is then condensed to form a low density peat moss containing board which is subsequently calendered for use in such products as dressings, diapers and sanitary napkins.

Abstract: An extended nip press for removing water from a traveling web in a paper machine including a press roll with an elongate shoe having a concave surface facing the roll and forming an extended nip therebetween with the shoe pressed to the roll and mounted to accommodate movement to form a wedge of lubricant between the shoe and a belt with the ends of the belt closed by end walls to contain lubricant within the belt and a flexible radial connection between the end walls and the ends of the belt so that the belt will follow the curvature of the nip beyond the ends of the shoe and will flex only in a single plane of the nip.

Abstract: A tandem calender is provided at the output end of a paper machine which includes two single stack nips in-line. The first nip is formed by a pair of steel rolls which are lightly loaded and the second nip is formed by a steel roll and a plastic covered roll which is loaded 2-10 times greater than the first nip.

Abstract: In a particularly simple construction a twin-wire papermaking machine possesses a reduced number of rolls as well as a compact arrangement. The foregoing and the greatest possible velocity of a through-passed paper web can be obtained by employing non-suction rolls, instead of suction rolls, in a pressing section of such papermaking machine, by upwardly entraining the paper web conjointly with a top or upper wire of a twin wire arrangement and by transferring the paper web to a pressing roll having a smooth surface, and furthermore, by providing at the pressing roll an extended or wide-nip supporting shoe by means of which the paper web is dewatered in an extended pressing nip zone. Advantageously, the dewatered paper web is taken off from the surface of the pressing roll in a downward direction and fed to a drying section of the papermaking machine. The drying section may be arranged below the pressing section and directly adjacent the bottom or lower wire of the twin wire arrangement.

Abstract: An extended nip press for removal of water from a web of fibers experiences a press shoe expansion and deformation problem due to uneven heating of the press shoe under load. The press nip includes a rotatable press roll, which is opposed to a press shell or jacket that rides over a press shoe that is supported in a recess on a supporting member. The press shoe has an upper part with a top surface on which the press belt slides through the press nip and has a lower supporting part. The upper and lower parts are heat insulated by an inserted insulating layer. The upper and lower parts are form locked by a spline connection toward the inlet side of the press nip. To avoid heat-caused deformation of the press shoe, the lower supporting part has a greater moment of resistance against flexure than the upper part due to their respective cross-sections.

Abstract: Fibers, such as wood fibers, are treated with a solvent solution of a thermoplastic polymer, e.g., polypropylene; the solvent is removed; and the treated fibers are fused into an article such as a fiber-polymer sheet or a board.

Abstract: The invention relates to a method and a device for reducing the rewetting of a web after a press nip. The web to be dried is passed together with a press felt through a press nip formed by a first and a second press roll. The web and the felt are separated from each other after the press nip. For reducing the compressive pressure as quickly as possible after the center line of the nip, a mat made of a water-impermeable and resilient material is arranged to pass through the nip, said mat being in contact with the surface of either press roll and one of the surfaces of the web. After the press nip, the mat is subjected to a tensile stress, preferably by means of a second pair of rolls for preventing the returning of the mat to its original thickness starting immediately after the center line of the press nip.

Abstract: A pressing method and apparatus for dewatering a fibre web, such as a paper or cardboard web, in a paper machine press section including two press rolls through which the web is conducted carried on either a single fabric or interposed between a pair of fabrics. The web is pre-pressed in a pre-pressing zone located in the throat region between the press rolls. The pre-pressing pressure is applied to the web through the mediation of a substantially impermeable band which passes through the press nip in overlying relationship with the web as the latter is conducted over a sector of one of the press rolls. After the pre-pressing step, the web is immediately conducted through the zone of the press nip, the pressing of the web which takes place in the press nip determining the dry matter content of the web subsequent thereto. The pre-pressing zone immediately precedes the zone of the press nip so that the pre-pressing and nip zones together in combination constitute a pressing zone.

Abstract: A press section for a running fibrous web, and a method of pressing therein. The press section comprises a first press zone, means for passing the fibrous web in a closed draw to the first press zone, means for changing running direction of the web after the first press zone to substantially reverse the running direction thereof, a second press zone disposed after the means for changing the running direction of the web, and a central roll forming a part of the first and second press zones, with the first and second press zones being disposed substantially opposite one another about the central press roll and constituting means for compensating compression load and weight of the central press roll, and also comprising means for directing the web in a closed draw out of the press section after the second press zone.

Abstract: The belt press unit of a paper machine includes an elastic tubular press belt which passes around the circumference of and is spaced from the surface of a hollow, annular supporting body. A press shoe in the supporting body presses outwardly and urges the press belt against an opposing surface on a mating roller for defining a press nip. Circumferentially outside of the press zone, each of a plurality of circumferentially spaced guide ledges extends across the direction of travel of the belt. A torsionally rigid beam extends through and is attached at two axially spaced locations along the hollow of the annular supporting body. At least one of the guide ledges is supported to the beam, whereby radial deflection of the supporting body does not result in radial deflection of the beam and thus does not cause radial shifting of the guide ledge. The beam is axially displaceable with respect to the supporting body.

Abstract: An apparatus, method and band for forming and/or dewatering a fibrous web, in which the web or a pulp suspension layer forming the same is conveyed and supported through a significant portion of its run in a paper machine by a specific processing band, while liquid such as water is simultaneously removed therefrom by hydraulically contacting the same with liquid present under vacuum or underpressure within the processing band, through a finely porous, liquid-suction surface on the band that is saturated with liquid.

Abstract: An improvement in a long-nip press for a paper making machine, and a method for applying pressure in the press zone of such a long-nip press. The improvement is directed to providing a press shoe arrangement in the press nip that comprises a frame component, means for articulately engaging the frame component with a stationary structure, a first shoe component disposed in the frame component with means for applying pressure to the same, a second shoe component formed as a part of the frame component itself along with means for applying pressure to the same, with the press shoe arrangement constituting means for incrementally increasing pressure on a press belt and in the press zone itself. The method of the present invention is directed to applying pressure on a running fibrous web through a press nip, by incrementally applying greater and greater pressure onto the running fibrous web as it passes through the press nip.

Abstract: Apparatus for the press treatment of a fiber web in a long or extended press zone includes a first press fabric loop in which a press roll is situated and a press shoe situated within a press belt loop which acts in opposition to the press roll, the latter being supported on a transverse beam. The press roll and press shoe together form an extended press zone through which the web to be pressed is guided. The press shoe includes a pressure chamber isolated from the external environment by sealing members and to which a pressure medium, such as a fluid under pressure, is passed. The pressure chamber acts within the extended press zone on the press belt.

Abstract: The disclosure concerns a press device for a paper making machine, and particularly concerns an extended nip press. A hollow tubular, stationary support body extends around a supporting beam, which is a flexing beam. Hydraulic piston-cylinder combinations extend between the beam and the supporting body in a press plane. A radially non-displaceable press shoe is supported on the support body and faces toward a counter-roll to define a press nip between them. The outwardly facing surface of the press shoe is concave in the circumferential direction of the support body. The amount of pressure in the hydraulic supporting means determines the press force which prevails in the press zone.

Abstract: A dual-belt method and apparatus for dewatering a water laden cake of material through the use of multiple primary dewatering rolls is disclosed. A pair of porous belts containing filter cake disposed between the belts are wrapped around a first and second primary roll so that the belts circumscribe more than a 180.degree. arc of each roll. The pressure applied to the belts, that is, to the filter cake, is greater on the second roll than on the first roll.

Abstract: A paper machine press with a web being picked off a forming wire and passed through a first two roll nip sandwiched between upper and lower felts, the web transferred to the lower felt and then to a felt of a second press with the second double felted press being an extended nip type formed between an upper roll and a lower concave shoe with a relieved leading edge and a water impervious belt passing through the nip sliding over the shoe with the belt being guided on an annular stationary guide, the web transferred to the upper felt following the extended nip by a suction shoe within the felt and thereafter the web being transferred to a fifth felt.

Abstract: A press roll in a paper making machine comprises a non-perforated inner frame onto which an elastic layered structure is applied, the layered structure including an inner layer having a volume of which a substantial portion is constituted by cavities and an outer layer adapted to act against the inner surface of a looped press felt which passes through the press nip, the outer layer having passages formed therethrough which communicate with the cavities of the inner layer. During operation, the cavities are compressed together and thereby widen or extend the nip zone and, additionally, the cavities act as suction devices to produce a negative pressure in the nip zone following the centerline thereof. A press is disclosed which is formed by the press roll described above and a counter-roll which is provided with an elastic coating and a hollow face. A pair of press felts pass through the nip zone formed by these rolls between which the web to be dewatered is passed.

Abstract: In a paper making machine dewatering press section substantially equally pressing and dewatering of both faces of a freshly felted paper sheet web is effected by running the web through first press roll means providing a double action first dewatering nip between corunning porous dewatering felts, and successively thereafter running the web through a four roll stack providing second, third and fourth nips without an open paper draw. In the second nip the web is run in dewatering felt engagement with one face of the web, and the opposite face of the web is in direct non-dewatering surface compacting roll engagement in such nip. In the third nip both faces of the web are in direct surface compacting engagement with the non-dewatering press rolls. In the fourth nip, a second dewatering felt runs in engagement with said opposite face of the web and said one face of the web is in non-dewatering surface compacting press roll engagement.

Abstract: The invention relates to a method and means for removing water from a web in a press of a papermaking machine. The web to be dried is passed between press felts through a press nip formed between press rolls. A resilient mat or the like, which is in contact with one of the press felts, is also passed through the press nip. In order to produce a hydraulic counterpressure at the nip, a wire is passed between the resilient mat and one of the press rolls and water is sprayed on the wire immediately before the press nip for producing a water cushion in the section of the wire lying between the press roll and the resilient mat. The wire is in this case formed so that water cannot move in the longitudinal or vertical direction of the wire.

Abstract: In a belt pressing unit, which preferably serves as wet press of a paper machine, an elastic tubular press belt travels around a supporting body and, together with a back roll, forms an extended press zone. Beyond the press zone along the path of the press belt, liquid is fed to the inner side of the press belt in order to cool the press belt. This liquid is permitted to travel, together with the press belt, around the supporting body. Most of the liquid is then removed from the press belt, preferably at a position in front of the press zone. The liquid may then be cooled and fed back to the press belt. In addition, liquid may also be fed to the inner side of the press belt where the press belt enters the press zone, for cooling and lubricating a pressing surface of a press shoe which presses the press belt toward the back roll.

Abstract: An extended nip press having a press nip formed between a first press roll and a looped traveling belt wrapping a portion of the roll with the belt having a shaped mandrel therein with a concave surface conforming to the roll facing the nip and a concave surface facing away from the nip conforming to a support roll with lubricant between the mandrel and belt and the rolls having a deflection control means with the mandrel being self-positionable during operation of the press.

Abstract: A heat resistant thin paper excellent in electrical insulating property can be obtained by subjecting pulp-like particles of aromatic polyamide or aromatic polyamide-imide, which have a low freeness and a low ion content to wet paper-making process, drying and then making the resulting web dense under a pressure.

Abstract: The disclosure concerns a press roll for pressing a web passing through a nip between the press roll and an 2 associated roll, particularly in a paper making machine. The press roll includes a rigid inner shell and flexible, elastic outer shell which rotates around the inner shell. An outwardly pressurized elongate pressure ledge is placed in the inner shell at the nip to produce an elongated nip and to be pressurized in opposition to the associated roll at the nip. In an alternate embodiment, the pressure ledge has a pressurized, outwardly facing recess facing the outer shell. A drive roll drives the outer shell to rotate around the inner shell. Recesses in the inner shell carry lubricant for lubricating the rotation thereof.

Abstract: An extended nip press for a paper machine for removing water from a wet paper, cardboard or that kind of a fibrous or porous web. The press comprises a rotatable press roll and two band rolls parallel to the press roll and an endless press band running around them which is pressed against the press roll for forming an extended press zone. The paper web to be dried is conveyed through the pressing zone with a dewatering felt. The press band consists of several separate parallel band strips, in the pressure zone. Each band strip is equipped with its own stretching device for individual regulation of the tension of the band strip.

Abstract: A method and mechanism for positive web transfer in a press section of a papermaking machine including an intermediate press nip formed between first and second press members with a porous felt on one surface of the web and a nonporous looped smooth surface belt of nonextensible material impervious to water passing through the nip in direct contact with the other surface of the web so that the web follows the belt downstream of the nip with the web first being pressed between an earlier press upstream of the intermediate press, and the web being removed from the belt following the intermediate press with rewetting of the web on the offrunning side of the intermediate nip due to contact with the impervious belt being eliminated.

Abstract: An extended nip press for a paper machine for removing water from a wet paper, cardboard or similar fibrous or porous web. The press comprises a rotating press roll and at least one stationary loading shoe as well as a band impermeable to a medium and movable between said press roll and loading shoe. The loading shoe is provided with a sliding surface against which the press roll is pressed through the band for forming an extended press zone. A paper web to be dried is passed through the press zone together with a felt for receiving water. The band is made compressible, and in its surface facing the sliding surface are formed a plurality of separated recesses into which a lubricating medium is sprayed.

Abstract: A peat moss containing board is manufactured by first conditioning the board to a specific water content and then densifying the board by calendering between rollers. A board of enhanced absorbency results.

Abstract: An apparatus pressure treats a moving web by pressing the web against a surface. The apparatus comprises a continuous link chain and a chain support. The chain support supports a moving length of the chain close to the surface so the length of chain has a shape complementary to the shape of the surface. A length of web moving with the chain is pressed between the chain and the surface.

Abstract: A squeeze roll arrangement and method is disclosed for high expression squeeze roll liquor expression of non-woven fiber batts. An auxiliary conveyor belt is provided to squeeze the batt before passing through the nip of the squeeze rolls with the batt. In this way, a portion of the liquor carried by the batt is expressed prior to passage of the batt through the nip. Since the batt is carried by the auxiliary conveyor belt, disruption of the batt is minimized. Preferably, chains are provided on either side of the batt to maintain a preferred orientation of the batt. Various sprockets and pulleys are provided as desired to guide the chains with various turn rollers provided to carry the conveyor belt. The chains are flexibly attached to the edges of the belt to continuously guide the belt. In this way, alignment of the belt on the turn and squeeze rolls is maintained.

Abstract: A water-absorbing sheet assembly comprises two sheets, at least one of which is a water-permeable sheet, and a polymeric absorbent inserted between said two sheets, wherein at least a part of said two sheets are pressed and bonded to each other.

Abstract: An absorbent material is provided for body fluid absorbent products which material has relatively high tensile strength, and is extremely flexible and may be incorporated into absorbent products without substantial loss in user's comfort. The material is made by forming a slurry of water wherein the solids comprise cellulosic fibers and hydrocolloidal material. The wet web is formed from the slurry and the web is then dried. The dry web is then compacted to a density of at least 110% and preferably at least 150% based on the density of the dry web. The resulting product has a tensile strength of at least 10 Kg/cm.sup.2 and the Gurley Stiffness of less than about 40 gm.

Abstract: In the manufacture of a multi-ply fibrous sheet structure, each of a pair of plies of fibrous web material is provided with a pattern of relatively deep, primary, spot embossments each adherent to the opposite ply and surrounded by a pattern of relatively shallow, secondary, non-adherent spot embossments.

Abstract: A bulky, soft and absorbent creped paper web is manufactured by supporting an uncompacted wet web of principally lignocellulosic fibers on an imprinting fabric having compaction elements, for example knuckles formed at the warp and weft crossover points of the filaments of an open mesh fabric. The imprinting fabric has a surface void volume of from about 15 cc/m.sup.2 to about 250 cc/m.sup.2, preferably from about 40 cc/m.sup.2 to about 150 cc/m.sup.2, and a compaction element contact area constituting from about 5% to about 50%, preferably from about 20% to about 35%, of the total surface of the imprinting fabric. The web is selectively mechanically dewatered or pre-dried by passing the web through a first compression nip formed between the imprinting fabric and a dewatering felt at a pressure in a range from about 20 pli to about 600 pli so that significant compacting of the web occurs in the vicinity of the compaction elements.

Abstract: A papermakers press felt having a raised pattern of substantially incompressible islands which provide void area on the back of the felt for the free passage of water which has been squeezed from the felt by press rolls, allowing lateral as well as longitudinal flow and providing a degree of pumping action.

Abstract: An extended nip press for removing water from a traveling web in a paper machine including a press roll wth an elongate shoe having a concave surface facing the roll and forming an extended nip therebetween with an endless belt trained over the shoe for passing through the nip and first and second belts passing through the nip with the belt supported by a plurality of guide rolls or by an annular shell having continuous smooth outer surface extending from the outgoing side of the nip back to the oncoming side of the nip with a beam within the shell and a uniform fluid support for the shoe supported on the beam.

Abstract: A method in a paper machine press section for dewatering a wet paper web by threading the web in an improved way and avoiding crushing or stretching the web structure through at least three nips of the press section. The invention is particularly characterized by following features of dewatering steps. The web while passing the press section through said three nips is all the time adhered to and supported by the surface of a felt or a roll without any open draws therebetween. Pressing the web in the first nip takes place between two felts and so the web is dewatered simultaneously through both sides of the web. Further dewatering and pressing steps take place in press nips which all are formed against a plain roll having a large diameter which enables a spacious location of the press rolls and their felts. Detaching the web from the surface of said plain roll for conducting the web into dryer section, takes place in a point allowing easy removal and handling in case of a web break.

Abstract: A suspension of artificial mineral fibers and cellulosic fibers is dewatered during shaping on a wire. The sheet is thereafter pressed and dried. A latex emulsion binder is added to the mat after the mat has been partially dried to a solids content of 60 to 90%. The mat product has physical properties, including impression resistance, comparable to previously known asbestos-containing products.

Abstract: Permanently embossed, highly porous wallpapers are produced by preparing a sheet from a mixture of up to 90% by weight of cellulose fibers and at least 10% by weight of fibrils of at least one thermoplastic polymer, and subjecting the sheet, in any order, to the following operations:(a) embossing at a temperature lower than the softening temperature of the thermoplastic fiber; and(b) heating at a temperature equal to or higher than the softening temperature of the thermoplastic polymer.The term "fibrils" refers to elongated structures in the form of films or fibers of varying length comprised between about 1.0 mm and about 50 mm and the minor diameter or dimension of which is comprised between about 1.0 and 400 micron.

Abstract: A paper machine has a forming wire loop which transports a web to a detachment transfer roll situated inside said wire loop at a detaching location where the web is to be detached from the wire and transported to a press section. A relatively dry felt engages the web on a sector of the detachment transfer roll at the detaching location and receives the web from the wire and continues to transport the web, while it adheres to the felt, to the press section. The detachment of the web from the wire on the detachment transfer roll is facilitated by the centrifugal force acting on the web which results from the substantial change of direction undergone by the web on the detachment transfer roll. In one embodiment, the press felt is directed to cover the web on a sector of the detachment roll by a press suction roll located on substantially the same level as the detachment transfer roll, the press roll having a suction sector which facilitates transfer of the web from the wire to the felt.

Abstract: A method in a paper machine press section for dewatering a wet paper web by threading the web in an improved way and avoiding crushing or stretching the web structure through at least three nips of the press section. The invention is particularly characterized by following features of dewatering steps. The web while passing the press section through said three nips is all the time adhered to and supported by the surface of a felt or a roll without any open draws therebetween. Pressing the web in the first dewatering nip takes place between two felts and so the web is dewatered simultaneously through both sides of the web. Further dewatering and pressing steps take place in press nips which all are formed against a plain roll having a large diameter which enables a spacious location of the press rolls and their felts. Detaching the web from the surface of said plain roll for conducting the web into dryer section, takes place in a point allowing easy removal and handling of broke in case of a web break.

Abstract: An extended nip press for removing water from a traveling web in a paper machine including a press roll with an elongate shoe having a concave surface facing the roll and forming an extended nip therebetween with an endless belt trained over the shoe for passing through the nip and first and second belts passing through the nip with the belt supported by a plurality of guide rolls or by an annular shell having continuous smooth outer surface extending from the outgoing side of the nip back to the oncoming side of the nip with a beam within the shell and a uniform fluid support for the shoe supported on the beam.