Abstract: A device for producing a fibrous sheet, including a water squeezing section which squeezes the dispersion medium from a dispersion to generate a web, and a drying section which dries the web to generate a fibrous sheet, the water squeezing section having multiple first fabric sheets arranged longitudinally along the transport direction of a web substrate that is partway through web generation, and water squeezing units which are provided beneath the multiple first fabric sheets and squeeze the dispersion medium from the dispersion, and in the water squeezing section, a continuous sheet is positioned so as to extend over the upper surface of the multiple first fabric sheets, and the dispersion is discharged onto the upper surface of the continuous sheet.

Abstract: A device for producing a fibrous sheet, including a water squeezing section which squeezes the dispersion medium from a dispersion to generate a web, and a drying section which dries the web to generate a fibrous sheet, the water squeezing section having multiple first fabric sheets arranged longitudinally along the transport direction of a web substrate that is partway through web generation, and water squeezing units which are provided beneath the multiple first fabric sheets and squeeze the dispersion medium from the dispersion, and in the water squeezing section, a continuous sheet is positioned so as to extend over the upper surface of the multiple first fabric sheets, and the dispersion is discharged onto the upper surface of the continuous sheet.

Abstract: A clothing for supporting a wet paper web for dewatering is provided, comprising a dewatering fabric extending in a machine direction and formed only from a woven material to have a single, substantially consistent, permeability. A pair of laterally-spaced strip portions extend along the dewatering fabric in the machine direction, with each being substantially and consistently impermeable to air and forming a substantially and consistently smooth non-water-retaining surface. The strip portions define a permeable web-carrying portion of the dewatering fabric therebetween, wherein the paper web carried thereby extends over the entire width thereof. The permeable web-carrying portion allows air to flow therethrough, exclusively of the impermeable strip portions, such that the wet paper web carried only by the permeable web-carrying portion is dewatered. The width of the permeable web-carrying portion thereby defines the width of the wet paper web dried thereon. Associated systems and methods are also provided.

Abstract: An apparatus for preventing the creation of non-uniform profiles caused by deckle waves though the use of transforming the deckle boards into active drainage elements in the paper forming area of the paper machine, without the need for expensive rebuilds such as dilution control head boxes.

Abstract: An apparatus in a paper or cardboard machine for confining the pulp flow coming from the headbox (1), said apparatus comprising at least one deckle system, which comprises a deckle part (2) and supporting elements supporting the deckle part, said deckle part being so arranged that in its service position it confines the pulp flow from the headbox in the sideways direction in the edge area of the wire (3). The deckle part (2) has been arranged to be supported so as to be movable in the longitudinal direction of the machine and that the deckle part (2) additionally comprises a mounting point (21) at which the deckle part is (2) secured so that, in the service position, it is substantially immovable at least in the longitudinal direction of the machine.

Abstract: A non-woven mat of inorganic fiber is disclosed having a substance which is lower at the edges of the mat than in the remainder of the mat. Apparatus for making such a mat includes: a source of a slurry of inorganic fiber in a liquid; a forming wire disposed to move past the source, the liquid passing through the forming wire to deposit the inorganic fiber on the forming wire; a mask across a part of the width of the forming wire to hinder passage of the liquid through the forming wire over the part, the effectiveness of the mask varying in the direction of movement of the forming wire past the slurry source.

Abstract: The invention relates to an arrangement for controlling the edge of pulp mass in a web former, the web former comprising a space formed by two wires or the like, into which space the pulp mass is fed. The wires or the like are supported on a chamber units, which each time include at least one chamber for receiving the water removed from the pulp mass. In conjunction with the side edge of the said web former are arranged pulp mass edge control means, which include an edge sealing part. The edge sealing part extends, in the lateral direction of the web former, by a distance between the chamber units in such a way that it will prevent the pulp mass edge from passing and/or spreading in the lateral direction of the web former into the area of the said edge of the web former. The invention also relates to a method for controlling the pulp mass edge in a web former.

Abstract: A supporting and wiping device is assigned to the machine wire in a paper-making system. The supporting and wiping device has supporting and wiping strips firmly held on a carrying frame or the like and extending transversely with respect to a direction of movement of the machine wire. The carrying frame has two carrying beams aligned parallel to the supporting and wiping strips and two-part transverse webs arranged between said beams and capable of being fixed to the latter, on the one hand the transverse webs and on the other hand the supporting and wiping strips being formed with mutually associated recesses and projections, by way of which the transverse webs and the supporting and wiping strips can be connected to one another and clamped by displacing the two parts of the transverse webs with respect to each other.

Abstract: Apparatus and process for controlling the basis weight cross-profile, the formation, the fiber direction and other quality parameters of a pulp sheet after the headbox in a dewatering plant. The apparatus including at least one suspension feed, at least one distribution device and at least one drainage device for excess suspension from the distribution device, where the distribution device has a distribution chamber and a turbulence-generating chamber made up of a number of pipes adjacent to one another. It is mainly characterized by the two peripheral zones of the headbox, comprising distribution chamber and turbulence-generating chamber, each having a discharge device in the sheet running direction for a partial suspension stream.

Abstract: The invention relates to an arrangement for controlling the edge of pulp mass in a web former, the web former comprising a space formed by two wires or the like, into which space the pulp mass is fed. The wires or the like are supported on a chamber units, which each time include at least one chamber for receiving the water removed from the pulp mass. In conjunction with the side edge of the said web former are arranged pulp mass edge control means, which include an edge sealing part. The edge sealing part extends, in the lateral direction of the web former, by a distance between the chamber units in such a way that it will prevent the pulp mass edge from passing and/or spreading in the lateral direction of the web former into the area of the said edge of the web former. The invention also relates to a method for controlling the pulp mass edge in a web former.

Abstract: The present invention is a machine for manufacturing a fibrous web from a fibrous suspension, with a sheet forming area that exhibits at least one suction box, which includes a main box with at least one suction box cover that is formed from at least two drainage elements that run laterally to the machine's running direction, border a suction slit, and each has one main body and at least one ceramic. The present invention is identified by the fact that at least one drainage element and/or one format slide exhibit at least one removable edge piece in which is integrated at least one temperature sensor in order to measure the temperature in the ceramic and/or the temperature at an adhesive point between the ceramic and the associated main body and/or the temperature in the main body. The present invention is furthermore a process and a system for monitoring a drainage element.

Abstract: A means for splash separation at a dandy roll on a fourudrinier machine is disclosed. The means comprises a doctor blade and a cover in order to separate and divert water further from the dandy roll. A rotating roll is positioned for collecting the separated water from the dandy roll. An additional doctor blade is used for wiping off the water from the rotating roll and for diverting it into a tub. The water leaves the tub at one or both short sides, which are open. In order to divert the water towards the respective short end, the tub is positioned or shaped inclined towards one or both short ends.

Abstract: A fabric support element for a papermaking machine has improved fluid drainage means, comprising openings which can include flow-through vents. The element can comprise an impingement shoe for a forming section of a papermaking machine. The openings can be defined by a plurality of laminar segments, at least some of which define a paper side surface of the element, and which segments can be spaced apart by additional laminar segments or other spacing means. Laminar segments for use in the element, a method of constructing the element, and a papermaking machine, or a forming section thereof, including the element are also provided.

Abstract: This invention relates to an improved structure of a head box for a paper making machine. The sidewalls of a nozzle of a head box shall be movable with the rotation of a roll transporting a forming wire of the paper making machine. Thus, the homogeneity of produced paper can be improved and the production rate of paper increased.

Abstract: The invention concerns an equipment and a method in a twin-wire former, in which a partly pre-drained or non-drained fiber stock is passed to between the forming wires of the web former in the vicinity of the former roll (11) or of a water drain box, in which connection water is drained out of the stock web by means of the former roll (11) or the water drain box. The twin-wire former comprises a rib (20) in connection with the former roll (11) or the water drain box in the lateral area of the wires (H2), which rib has been fitted to control the running of the second forming wire H2) passed from the gap roll. By means of the rib (20), in the lateral area of the wire runs, the point at which said forming wire (H2) reaches contact with the first forming wire in connection with the former roll (11) or the water drain box is shifted further away in the machine direction. The rib (20) is an oblong structure, which has a maximal height (Hmax) in the middle area of the rib (20).

Abstract: A tissue paper making machine, a tissue paper product, and a method for producing such a tissue paper product. According to the invention, a dewatering and sheet-forming wire (13;14) is deposited in the pulp flow area by a texturing wire (16;17) that is provided with a texture comprised of closed wire zones. This results in the production of a tissue paper product having improved optical and haptic properties.

Abstract: A vented lead blade for use in a paper making machine located so that the stock jet impinges the forming fabric at, or near to, its trailing edge. The vented lead blade serves to bend the forming fabric before it enters the forming section, and to vent at least a substantial proportion of any air which becomes trapped in the wedge shaped space between the surface of the forming fabric and the surface of the stock jet, together with at least some of any liquid carried with the air. The vented lead blade of this invention thus enables the forming fabric to be positioned so that the angle of impingement of the stock jet onto the forming fabric can be minimized to become substantially zero. It also makes it possible to reduce the unsupported length of the stock jet. The vented lead blade of this invention can be used in both an open surface forming section with one forming fabric, or in the forming section of a two fabric paper making machine.

Abstract: A pressurized box is positioned opposite a vacuum box. The pressurized box has a leading cross machine direction baffle with a ceramic shoe which engages a forming fabric, and a trailing cross machine direction baffle of similar construction. Two end deckles complete the pressurized box. The leading cross machine direction baffle presses against a resilient seal which causes a web contained between upper and lower forming fabrics to wrap about the baffle shoe a few degrees forming an effective end seal which does not allow air to bypass the baffle. The trailing cross machine direction baffle is positioned over a vacuum box which prevents air from leaking around the trailing baffle. A vacuum box draws air through the forming fabrics and the web, from the pressurized box increasing the total pressure gradient across the web to 20 to 30 psi or more. The pressure box and opposed vacuum box form an air press. The pressure box is positioned and held against the forming fabrics by opposing air tubes.

Abstract: A steam box including a steam chamber for blowing steam toward a paper or board web that runs on support of a wire and a suction zone arranged at the trailing side of the steam chamber of the steam box for providing suction of steam mist discharged by the steam chamber. The suction zone extends to sides of the steam chamber so as to extend to the lateral areas of the web. The steam box includes edge cutter devices arranged in the area of effect of the suction zone extending to the lateral areas of the web, so as to remove the fibers and fillers produced during the edge cutting and prevent soiling of the edges of the steam box.

Abstract: Sheet formation system and method for reducing wavy edges in a fourdrinier machine. The system includes a headbox having a nozzle bring adapted to produce a pulp suspension jet across a width of the machine, at least one rotating screen positioned to receive the pulp suspension jet, and at least two deckle plates adjacent to the screen. The deckle plates may be adjustably positionable such that a distance between the deckle plates and a centerline of the screen is adjustable in a machine direction over a substantial portion of a length of the side shields. The method includes directing a pulp suspension jet onto the rotating shield between the deckle plates to form a web sheet, moving the web sheet in a machine direction, and adjusting a distance between the deckle plates as the web sheet is moved in the machine direction.

Abstract: A paper-making machine for making a fiber web, includes a wire for carrying the fiber web. A trim squirt includes a nozzle cutter and an accumulator tank. The nozzle cutter is directed toward and transverse to the wire. The accumulator tank includes an inlet for receiving a pressurized fluid and an outlet fluidly connected with the nozzle cutter. The tank is structured and arranged to define an air attenuation pad therein.

Abstract: A machine for adjustably placing a low dam moving along each lateral edge of a Fourdrinier fabric so as to contain the paper-making slurry on the fabric without leaking over the edges of the fabric while the moving fabric is subjected to sufficient suction treatment to render the slurry immobile on the fabric. The principal object of this invention is to maintain the slurry in a steady flow pattern substantially free of any waves while the slurry is forming a self-supporting paper web.

Abstract: An air press for noncompressively dewatering a wet web to consistency levels not previously thought possible at industrially useful speeds without thermal dewatering. The air press has an air plenum and a vacuum collection device, each on opposite sides of two support fabrics that sandwich the paper web. There are cross machine sealing blade(s) that impinge upon the support fabrics and is opposed on the other side of the support fabrics by a sealing member formed of deformable material. The air plenum and vacuum collection device are movable relative to one another so that the sealing blade and deformable sealing member form a seal in the operating position of the air press.

Abstract: Apparatus for controlling widthwise contraction of a conveyed web has opposing first web carrier belts and opposing second web carrier belts forming a generally serpentine transport path for supporting opposite lateral edges of the conveyed web.

Abstract: An air press for noncompressively dewatering a wet web to consistency levels not previously thought possible at industrially useful speeds without thermal dewatering.

Abstract: An air press for noncompressively dewatering a wet web to consistency levels not previously thought possible at industrially useful speeds without thermal dewatering. Side seal members are positioned beyond the lateral edges of the wet web and support fabrics. These seals flex into sealing contact with the opposite sealing contact surfaces upon exposure to the presurized fluid of the air press.

Abstract: A method and device for cutting a paper web (9) in a twin wire former (1) is described, said web being formed between two forming fabrics (4, 5) while wrapping a section of a forming roll (3), and the web cutting being carried out with the aid of jet cutters (10, 11) discharging jets of pressure medium so that a paper web of final width is obtained and, when applicable, a tail in the web. The jet cutters (10, 11) are arranged at the forming roll (3) so that the web cutting is carried out in the web at a point where the recently formed paper web (9) and the forming fabrics (4, 5) together wrap said section of the forming roll (3) in a sandwich structure.

Abstract: A suction box for a machine for manufacturing a fiber web extends transverse to the travel direction of a porous belt and applies suction to the belt and the fiber suspension on the belt. The suction box has an open side toward the belt. At least two and more usually a plurality of support strips contact and extend transverse to the travel direction of the belt. Each adjacent pair of strips defines a suction slot. At one or both lateral side zones of the belt, a respective filler limits each slot, and the fillers establish the length of the slot across the belt. A respective filler extension extends inward from each of the fillers. The extensions are pervious to the fluids being suctioned, such as water and air, by being narrowed or wedge shaped or by being perforated. The fillers with their extensions are adjustable in position transverse to the direction of travel.

Abstract: Apparatus and method for laterally sealing a drainage gap of a twin-wire paper machine. This lateral sealing has contact only with the lower wire. Between the upper wire and the lateral sealing, sealing is preferably effected by sealing water. Since this lateral sealing is elastic, it can adapt itself to the movements of the lower wire.

Abstract: A drainage device and method which provides for drainage from paper or pulp stock on a fabric in a sheet or mat making machine which includes a primary blade and trail blade with a gap therebetween for drainage wherein the size of the gap controls drainage and the primary blade is so configured so as to force a portion of the drained liquid through the fabric to create paper stock activity and disbursement while minimizing turbulence and maintaining laminar flow in the machine direction along with providing reinforcement of CD shear.

Abstract: A sealing device for sealing the opposite sides of upper and lower converging liquid pervious moving belts used in dewatering a liquid slurry containing fibrous materials wherein the upper and lower liquid pervious belts converge from an entrance portion to an exit portion and wherein the sealing device is formed from an elastomeric material and has a base portion and two integral diverging lip portions which taper vertically and horizontally from the entrance portion to the exit portion. The inner surfaces of each lip portion has a first tapered surface extending from at least adjacent to the entrance portion to at least adjacent to the exit portion of the apparatus and a second tapered surface extending from at least adjacent to the exit portion to at least adjacent to the entrance portion of the apparatus. Each sealing device is preferably formed as two sections each of which may be adjusted for vertical, horizontal and pivotal adjustment.

Abstract: Paper machine deckle defining structure is protected from fiber accumulations by a uniformly distributed water film that continuously flows from a flat, horizontal upper surface over all smoothly faired lower surfaces of the deckle elements.

Abstract: A paper machine deckle board is supported and protected from fiber accumulations by a multi-functional structure which adjustably positions the deckle board with an integrated flushing water conduit and film distribution fountain.

Abstract: Paper machine deckle defining structure is protected from fiber accumulations by a uniformly distributed water film that continuously flows from a flat, horizontal upper surface over all smoothly faired lower surfaces of the deckle elements.

Abstract: To protect the paper machine fourdrinier screen, deckle blades are fabricated with a soft polymer (polytetrafluoroethylene) lower edge having little adhesive affinity for either papermaking fiber or traditional plastic bonding compounds. Necessary structural rigidity is contributed to the assembly by a mechanical cladding of suitably stiff polymer plates that are adhesively bonded to a compatible plastic mounting body.

Abstract: Paper machine cupping rails for curling the lateral edges of a web formation screen are protected from fiber accumulations by a uniformly distributed water film that continuously flows from a flat, horizontal upper surface respective to a plurality of conduit length increments.

Abstract: An improved conveyor edge product containing device for typical paper making machinery comprised of the main body (20) typically made of ultra-high molecular weight polyethylene conventionally machined with an elongated chamber (30) for fluid distribution to equally spaced nozzles (32) in the machine nozzle slot (34). The device generates a continuous overlapping fan spray pattern (66) creating a seal between the conveyor (52) and the device eliminating side discharge of paper pulp slurry (60).

Abstract: The lateral edges of a papermachine forming fabric pond are contained by a deckle board having a bottom edge positioned above the forming fabric upper surface elements but below the fabric supported stock pond surface. Lateral edges of the forming fabric run under the deckle board and upon an edge support beam within an elongated fluid channel between the outside surfaces of the deckle board structure and the inside surfaces of the edge support beam. Fluid flow within the elongated fluid channel, preferably independent of the papermachine headbox slice opening, supplies the elongated fluid channel volume for a fluid barrier to pond stock loss under the deckle board bottom edge.

Abstract: A Fourdrinier-type paper machine having a wet end with a headbox for storing a mixture of pulp and water, this pulp mixture being jetted onto a fabric having two side edges, this fabric forming an endless belt the upper surface of which is caused to continuously move away from the headbox, including an apparatus for continually supporting and curling the edge of the fabric so as to prevent loss of pulp mixture off the sides of the fabric and so as to prevent edge wave formation which would require substantial trimmage and waste. The apparatus includes a pair of bars having a wedge-shaped cross-section, one edge of each inserted under one side of the fabric, to cause the edge of the fabric to curl upward. Apparatus is provided to adjust the amount of curl. Several of these curl adjusting apparatuses are placed along the length of the bars so that the amount of curl can be different at different points along the bars.

Abstract: A papermaking machine including a non-dewatering forming board comprising a plurality of contiguous blades and a plurality of shower nozzles for showering stock carried by a forming medium over the forming board with a plurality of needle jets of water, each needle jet of water extending in a downstream direction, forming a small acute angle with the stock, and being in close proximity with the stock so that the needle jets of water impinge upon the stock as continuous streams.

Abstract: A resistance heating coil is placed on a sieve like tray above a suction box, and a slip of ceramic fibers is placed in the suction box, so that a ceramic fiber layer builds up when suction is applied. Portions of the sieve like tray are closed in regions beneath the resistance heating coil by strips in such a manner that the impervious regions of the sieve like tray are narrower than the width dimensions of the heating coil so that the space inside the heating coil remains free of fiber material during the vacuum moulding operation. This allows the heater to be operated at a higher temperature without the risk of crystallization of the fibers.

Abstract: A machine for making a fiber web with sharply defined edges, specifically a paper or tissue web, between a felt and a wire, features a headbox that dispenses the fiber suspension into a feed-in area formed between the felt and wire. The wire has a smaller width than the width of the fiber suspension stream dispensed by the headbox.

Abstract: The papermaking machine contains at least one water pervious dewatering wire or the like for forming a fiber web, particularly one layer of a multi-ply fiber web, and at least one headbox for infeeding a fiber stock suspension to be applied in the form of a free jet to the dewatering wire. Between the headbox and a section of the dewatering wire extending along the headbox there is arranged at least one deflecting device for separating and withdrawing a partial flow or stream of the fiber stock suspension. The deflecting device can be inserted into a marginal region of the free stock jet. Such an arrangement enables, for example, a continuous or infinitely variable adjustment of the format width of the fiber web to be produced.

Abstract: A method and mechamism of removing an edge of a paper web formed on a traveling foraminous wire from stock issuing from the slice of a headbox including a blade positioned parallel to the machine direction and located to separate the edge from the flow of stock issuing from the slice opening before it engages the traveling wire and collecting the edge material separated and conveying it away so that the material can be used.

Abstract: A deliquefying system including at least one drainage device having a wear surface and being connected to a source of suction open to the wear surface. A wet web of material to be deliquefied is passed over the wear surface so that liquid is removed from the wet web of material by the drainage device. A liquid deckle is at each exposed end of the drainage device in position to prevent air from entering the drainage device through the end zone and thereby restricting the flow of air to passage through the wet web into the drainage device.

Abstract: An adjustable deckle is provided for use in papermaking machinery to be positioned between the ends of adjacent wear surfaces to facilitate prevention of loss of vacuum applied to the wear surfaces in operation of the machinery. The deckle includes an elongated member having a pair of opposing elongated front and rear faces, a pair of elongated top and bottom faces and a pair of end faces. The front face has a configuration conforming with the configuration of an adjacent edge of one wear surface when the deckle is inserted between two wear surfaces. The rear face has a recess therein and a resilient strip is mounted in the recess. A shiftable element is also mounted in the recess by engagement between surfaces of the element and surfaces of the elongated member. The shiftable element has a portion exposed through an opening in the rear face of the elongated member.

Abstract: An apparatus for forming a fibrous sheet, which apparatus comprises a first and a second endless wire for accomplishing a forming zone between mutually converging wires; a feed box with lips forming an outlet opening for feeding fibre suspension into the gap of the forming zone between the wires, the first wire being in an essentially tight contact with the first lip of the feed box, the second wire being in an essentially tight contact with the other lip of the feed box, and on both sides of the forming zone mutually essentially parallel side walls being arranged for tightening both sides of the forming zone against the wires; and rolls for guiding the wires, whereby the second wire is, at least along the sheet forming zone, arranged to run along the surface of a wire cylinder equipped with suction devices, whereby the first wire, which is guided from a breast roll arranged on the opposite side of the feed box relative to the wire cylinder, is, at least along the sheet forming zone, arranged to run carried b

Abstract: Apparatus for forming one or more sheets from a dilute suspension of fibers in a liquid has a Fourdrinier wire the upper reach of which travels above a foraminous support, and a head box which has an outlet discharging the suspension onto the upstream portion of the upper reach. The liquid passes through the wire and support, and the fibers form a mat which is carried and advanced by the upper reach of the wire. The apparatus has several deckles which are impervious to liquid and are mounted in or on the support or at a level immediately above the upper reach of the wire. Each deckle extends lengthwise of the entire outlet of the head box and its width is only a small fraction of the width of the outlet. Feed screws or the like are used for moving the deckles sideways so that they overlie selected elongated zones of the upstream portion of the upper reach of the wire, and each deckle can be releasably fixed in the selected position.