Abstract: Papermaking belts and more particularly to papermaking belts that employ a porous member and a polymer associated with the porous member, processes for making such papermaking belts and processes for making a paper web utilizing such papermaking belts are provided.

Abstract: Papermaking belts and more particularly to papermaking belts that employ a porous member and a polymer associated with the porous member, processes for making such papermaking belts and processes for making a paper web utilizing such papermaking belts are provided.

Abstract: A method for producing webs of transversely extensible fibrous material, in particular paper, characterised by causing a web (12) of pliable fibrous material having a water content between 20% and 80% to adhere to at least one continuous elastic band elastic (6, 26, 31, 46, 66) adhering to the lateral surface of a first rotating roller, provided on its lateral surface with at least one circumferential cavity and to temporarily and locally pre-stretched said band by making it to enter into said at least one cavity for interference from at least one second rotating roller having its axis parallel to the axis of the first roller.

Abstract: The present invention is related to a paperboard product having a basis weight in a range of 100 to 350 pounds per 3,000 square feet. The paperboard comprises at least one coated surface suitable for printing. The at least one coated surface comprising cellulosic fibers and from about 0.05 to about 0.5 wt. % dry basis expanded synthetic polymer microspheres based on total weight of the of cellulosic fiber dispersed thereof. The coated surface has a Parker smoothness less than about 2.0 and a Hagerty/Sheffield smoothness not less than about 20 Sheffield units.

Abstract: A panel includes about 0.1% to about 95% by weight of a renewable component. The panel has at least one of a CAC value of at least about 25, an NRC value of at least about 0.25 and an STC of at least about 25. A method for manufacturing such panels is also provided.

Abstract: Fibrous structures employing non-naturally occurring hardwood pulp fibers, and more particularly, sanitary tissue products employing non-naturally occurring hardwood pulp fibers and methods for making same are provided.

Abstract: A device is provided for distribution of 2-13% cellulose pulp to a movable processing surface in a pulp processing device to form a pulp web thereon. An inlet box has an inlet and an outlet defined therein. A rotatable distribution means is arranged for distributing pulp along an entire length of the outlet. The distribution means is placed so that a first distance (a1) between the distribution means and a first outlet wall is greater than a second distance (a2) between the distribution means and a movable processing surface.

Abstract: An air stabilization system employing two parallel, opposite-facing Coanda nozzles, with each nozzle exhausting gas at opposite directions, subjects a moving flexible web to opposing forces effective to create local tension within the web. Each nozzle includes an elongated slot that is perpendicular to the path of the moving web. The nozzles serve as separate points along the machine direction for controlling the height of the web. The operative surface with the nozzles can exhibit a flush surface. The nozzles can be formed on elevated structures on the operative surface. The operative surface can be covered with a transparent substrate to minimize shape distortions on the moving web and to prevent debris from collecting around the sensor. By modulating the velocities of gases exiting the nozzles, the shape of the web can be manipulated to present a planar contour. The air stabilization system can be incorporated into a caliper scanner.

Abstract: Press for a fiber web supported by a clothing, said press having first and second press elements that interact with each other in order to form an extended nip in a press zone for the clothing-supported fiber web, said first press element having: —a support; —a press body, being supported by the support; —an endless, flexible belt, sliding over and forming a closed loop around the press body; and —a support element, being placed inside the loop for supporting the belt, said clothing surrounding together with the belt between a first position and a second position along the loop, wherein at least the first position is located outside the press zone. According to the invention, the support element is located in the first position. The invention also relates to a method in, and a press element for such a press.

Abstract: Paper machine for manufacturing a fiber web of paper without through air drying (TAD) or pressing, comprising: a wet end, having a wire section with at least one forming wire, a clothing, being air and water permeable, and a dewatering unit for dewatering the fiber web; and a drying section, comprising a drying surface for the fiber web; and also a transfer roll for transferring the fiber web to the drying section, wherein the fiber web is supported by said clothing from the wire section all the way to and over the transfer roll. The clothing has a three dimensional structure for structuring the fiber web.

Abstract: A support body for an apparatus having an extended nip that is defined by a contact surface of the support body and an opposed surface, the support body having two side surfaces facing from each other and connecting to the contact surface, and a bottom surface facing from the contact surface, the support body being arranged to be moved towards the opposite surface by means of a loading system in order to load the nip via the contact surface. The support body is elastically deformable and has its contact surface adaptable to the opposite surface in interaction therewith. A method of forming an extended nip in an apparatus includes loading the support body by means of a loading system, and a method of controlling the load in the extended nip includes designing the support body with at least two layers with different elasticity providing a corresponding load profile.

Abstract: The invention relates to a method for optimizing the energy balance of a forming section in a machine for producing fibrous webs, in which a fiber suspension, which is fed to the forming section by way of a material ramp after the immobility point is reached, is passed through at least two dewatering units within a compression zone and to a subsequent functional unit. The invention is characterized in that a setpoint value for a target dryness to be set is predefined based on the existing dewatering elements as a function of a theoretical maximum achievable dryness under plant conditions in the area of the transition zone, said setpoint being selected such that it is less than the theoretical maximum achievable dryness but is equal to or greater than a required minimum dryness in the area of the transition zone, and that the target dryness is controlled by lowering the inlet dryness at one of the last dewatering units disposed in the direction of passage of the fiber suspension within the compression zone.

Abstract: Devices and methods related to a web stabilizer for stabilizing a moving web with a surface adjacent the moving web and with a supply of moving fluid in a direction parallel to the moving web and a supply of moving fluid in a direction perpendicular to the moving web.

Abstract: The invention relates to an arrangement and a method of a paper machine or the like for saving energy in the drying section. According to the invention, in the drying section of a paper machine or the like in connection with a pocket space (9) between two drying cylinders (1, 2) and one turn roll (3), there are the following delimiting said pocket space (9): a first drying cylinder (1), a second drying cylinder (2), a turning suction roll (3) and a wire (5, 5a, 5b), which is arranged to travel from the first drying cylinder (1) to the turning suction roll (3) and from there on to the second drying cylinder (2). The arrangement further comprises a box-like runnability component (10) and a sealing element (19) arranged in the lower part of the runnability component (10), in the gap between the runnability component and the turning suction roll (3) in order to seal said gap and thereby to promote the operation of the turning suction roll (3).

Abstract: A support band for a drying arrangement for drying one of a paper, a board, a tissue and a fibrous web in a papermaking machine for at least one of producing and finishing the same, the support band including a water-impermeable sealing layer and at least one water-absorbing storage layer. The at least one water-absorbing storage layer being adjacent to the water-impermeable sealing layer. At least one of the water-impermeable sealing layer or the water-absorbing storage layer being made, at least partially, of a highly thermally conductive material.

Abstract: A web stabilizer adapted to stabilize a web moving across a span between two components of a web machine or machines, the stabilizer including: a surface facing and adjacent the moving web, and at least one transition in the surface of the stabilizer, wherein the transition is a protrusion or recess in the surface between a leading edge of the stabilizer facing a direction of web travel and a trailing edge of the stabilizer.

Abstract: A method for feeding one or more chemicals into a papermaking process is disclosed. More specifically, a method for feeding chemistry into a thick stock of a papermaking process is disclosed.

Abstract: A pressing arrangement including at least one first fabric and second fabric both being permeable. A paper web is disposed between the first fabric and the second fabric. A pressure producing element is in contact with the first fabric. A support surface of a supporting structure is in contact with the second fabric. A differential pressure is provided between the first fabric and the support surface that acts on the first fabric, the paper web, and the second fabric, whereby the paper web is subjected to mechanical pressure and experiences a predetermined hydraulic pressure so as to cause water to be drained from the paper web. The pressing arrangement is structured and arranged to allow air to flow in a direction from the first fabric through the paper web and through the second fabric.

Abstract: An air stabilization system employing two parallel, opposite-facing Coanda nozzles, with each nozzle exhausting gas at opposite directions, subjects a moving flexible web to opposing forces effective to create local tension within the web. Each nozzle includes an elongated slot that is perpendicular to the path of the moving web. The nozzles serve as separate points along the machine direction for controlling the height of the web. The operative surface with the nozzles can exhibit a flush surface. The nozzles can be formed on elevated structures on the operative surface. The operative surface can be covered with a transparent substrate to minimize shape distortions on the moving web and to prevent debris from collecting around the sensor. An internal baffle is employed to channel air flow within each nozzle. The baffle equalizes the gas pressure across the nozzle and directs air flow towards it.

Abstract: A support body (7) for an apparatus having an extended nip (N) that is defined by a contact surface (13) of the support body and an opposed surface (4), the support body having two side surfaces (69, 70) facing from each other and connecting to the contact surface, and a bottom surface (71) facing from the contact surface, the support body being arranged to be moved towards the opposite surface by means of a loading system in order to load the nip via the contact surface. According to the invention the support body is elastically deformable and has its contact surface adaptable to the opposite surface in interaction therewith. The invention also relates to a holding device for such a support body and an apparatus, e.g. a press, for the treatment of a fibre web, said apparatus having such a support body.

Abstract: Guiding and cutting apparatus for use in a paper converting and sheet inserting apparatus. Guiding apparatus includes first and second rollers for engaging lateral edges of a web and a driving apparatus configured to permit the rollers to rotate at different surface speeds relative to one another. Cutting apparatus includes an angled blade for transversely cutting each side-by-side portion of a slit web into discrete sheets. Two side-by-side sheets are cut from respective web portions separately in time. Method, blade apparatus, web brake and slitter apparatus are disclosed.

Abstract: A method of dewatering a fabric includes contacting the fabric with an endless wicking substrate.

Abstract: A support body for an apparatus having an extended nip that is defined by a contact surface of the support body and an opposed surface, the support body having two side surfaces facing from each other and connecting to the contact surface, and a bottom surface facing from the contact surface, the support body being arranged to be moved towards the opposite surface by means of a loading system in order to load the nip via the contact surface. The support body is elastically deformable and has its contact surface adaptable to the opposite surface in interaction therewith. A method of forming an extended nip in an apparatus includes loading the support body by means of a loading system, and a method of controlling the load in the extended nip includes designing the support body with at least two layers with different elasticity providing a corresponding load profile.

Abstract: Described herein is a new concept in air dried tissue (ADT). The wet tissue web is received from the wet end of a papermaking machine and dried by an air floatation dryer that uses an endless loop to transport and support the wet tissue web as it is dried.

Abstract: A papermaking machine is provided for manufacturing a paper web, comprising a forming section having two clothings, a dewatering section comprising at least one paper manufacturing clothing, and a plurality of rotary rolls comprising guide rolls, each guide roll having two opposing flanges interconnected by a shell, each clothing running about some of the rotary rolls in a loop, wherein said papermaking machine is a tissue papermaking machine, at least one of the guide rolls is a lightweight guide roll supporting at least one of the clothings, and at least one of the shell and the flanges of said lightweight guide roll comprises a material with a density less than steel, wherein a weight of the lightweight guide roll is at least 10% less than a weight of a steel guide roll having the same dimensions and mechanical parameters. Associated devices and methods are also provided.

Abstract: This invention relates to a device for transferring a material web, particularly a web made of paper, board, tissue, or other pulp. In order to transfer the material web and, preferably, a supporting belt from a first supporting surface to a subsequent supporting surface, a pick-up box with a pick-up zone to lift the material web off the first supporting surface and a stabilizer box with a stabilizing zone to stabilize the material web are arranged before the subsequent supporting surface. Suction can be applied to the pick-up zone and the stabilizing zone by means of a vacuum source. A further zone to separate the vacuum in the pick-up zone from the vacuum in the stabilizing zone is located between the pick-up zone and the stabilizing zone. This invention also relates to a process for transferring a material web performed with the device according to the invention.

Abstract: A device for transferring a material web, particularly a web made of paper, board, tissue, or other pulp. In order to transfer the material web and, preferably, a supporting belt from a first supporting surface to a subsequent supporting surface, a pick-up zone to lift the material web off the first supporting surface and a stabilizing zone to stabilize the material web are arranged before the subsequent supporting surface, where vacuum can be applied to the pick-up zone and the stabilizing zone from one vacuum source each. Here, the pick-up zone is sub-divided into at least two pick-up sub-zones across the material web running direction, where the vacuum can be switched on separately in at least one pick-up sub-zone. This invention also relates to a process for transferring a material web performed with the device according to the invention.

Abstract: A device for transferring a material web includes a transfer zone to which vacuum can be applied and at least one sealing mechanism with sealing lips. The sealing mechanism limits or divides the transfer zone, where suction can be applied to a space between the sealing lips.

Abstract: The invention relates to an apparatus used in the formation of paper. More specifically the present invention is directed to an apparatus for maintaining the hydrodynamic processes involved in the formation of a fiber mat or paper sheet. The performance of this apparatus is not affected by the velocity of the paper machine, the basis weight of the paper sheet and or the thickness of the mat being formed.

Abstract: An air stabilization system employing two parallel, opposite-facing Coanda nozzles, with each nozzle exhausting gas at opposite directions, subjects a moving flexible web to opposing forces effective to create local tension within the web. Each nozzle includes an elongated slot that is perpendicular to the path of the moving web. The nozzles serve as separate points along the machine direction for controlling the height of the web. The operative surface with the nozzles can exhibit a flush surface. The nozzles can be formed on elevated structures on the operative surface. The operative surface can be covered with a transparent substrate to minimize shape distortions on the moving web and to prevent debris from collecting around the sensor. By modulating the velocities of gases exiting the nozzles, the shape of the web can be manipulated to present a planar contour. The air stabilization system can be incorporated into a caliper scanner.

Abstract: The present invention relates to a process for applying optical brightening agent (OBA) to a sheet of paper or paperboard substrate. The process comprises the step of spraying an aqueous composition comprising an optical brightening agent onto at least one surface of a sized paperboard substrate to form a treated paperboard substrate. The treated paperboard substrate includes a layer of OBA on at least one surface of the paper or paperboard substrate in which the brightness of the treated paper or paperboard substrate is greater than the sized paper or paperboard substrate before treating thereof.

Abstract: The invention relates to a fabric belt for a machine for the production of web material, particularly paper or cardboard, including a first fabric layer providing a web material contact side and formed by way of the interweaving of warps with wefts, and a second fabric layer positioned below the first fabric layer and formed by way of the interweaving of warps with wefts, wherein the ratio of the number of warps of the first fabric layer to the number of warps of the second fabric layer is greater than 1.

Abstract: A panel includes about 0.1% to about 95% by weight of a renewable component. The panel has at least one of a CAC value of at least about 25, an NRC value of at least about 0.25 and an STC of at least about 25. A method for manufacturing such panels is also provided.

Abstract: The invention relates to a method and device for guiding a paper web, or corresponding web-like moving track, by using jets of compressed air as an aid. There are two jet directions, one essentially facing the arrival direction of the web (1) and the other essentially facing the departure direction of the web (1), in which case the jets form an area of vacuum between them. Compressed air is fed from one or more inlet ducts (3, 6).

Abstract: An air conditioning system for use in an over-the-road or off road vehicle is provided that allows operation during both engine on and engine off conditions. The system utilizes a variable speed, motor driven compressor controlled by an intelligent power generation management controller. This controller selects from one of the available sources of power on the vehicle to drive the compressor, and modulates the compressor speed and capacity based on operational parameters and source availability and depletion. The controller may also operate a coolant or air heater to provide heating to the interior compartments.

Abstract: A headbox including a stock dilution profiling arrangement and associated stock delivery systems are provided, which together deliver to the forming section of a papermaking machine a uniform stock flow with more consistent basis weight and fiber orientation profiles than has previously been possible. These improvements in basis weight uniformity and fiber orientation profile provide benefits in paper sheet formation and related paper properties.

Abstract: The invention relates to a press fabric, especially a press felt, for a machine for the production of a fibrous web, especially paper or cardboard, which is fluid permeable and which includes an elastomer polymeric material. The invention is characterized in that the total weight component of the elastomer polymeric material contained in the press fabric is more than 50%, preferably more than 60% of the total weight of the press fabric.

Abstract: An apparatus for feeding one or more chemicals into a process stream of a papermaking process is disclosed, as well as a method of utilizing the apparatus for feeding one or more chemicals into a process stream is disclosed.

Abstract: A fibrous structure product having two or more plies, wherein said fibrous structure product also has: (a) a plurality of formed surface features; (b) a Hand Protection Factor of greater than about 2×10?2; and (c) a basis weight of less than about 32 lbs/3000 ft2.

Abstract: The invention relates to a procedure and an apparatus in dry formation of a fibre layer, in which procedure fibre-containing air is passed through a forming wire (7) moving via a former (2) or an equivalent distributor unit and further through a suction box (8) or equivalent placed below the forming wire, and which air is circulated back to the upper part of the same or another former. In the solution of the invention, the air circulated through the suction box (8) is passed to the upper part of the former via channels (17) with an adjustable flow rate.

Abstract: The invention relates to a method of making surface-sized paper/board. The web to be treated in the method is after surface sizing passed to a treatment process for providing a desired drying shrinkage and/or increase of drying stresses to create thereby a desired effect on the flexural strength and/or bulk of paper/board.

Abstract: Press for a fibre web supported by a clothing, said press having first and second press elements that interact with each other in order to form an extended nip in a press zone for the clothing-supported fibre web, said first press element having: —a support; —a press body, being supported by the support; —an endless, flexible belt, sliding over and forming a closed loop around the press body; and —a support element, being placed inside the loop for supporting the belt, said clothing surrounding together with the belt between a first position and a second position along the loop, wherein at least the first position is located outside the press zone. According to the invention, the support element is located in the first position. The invention also relates to a method in, and a press element for such a press.

Abstract: A paper machine includes equipment for processing or producing a product in a continuous manner, such as a paper sheet. A grade change occurs when the equipment transitions from producing or processing a product having a first grade to producing or processing a product having a second grade. To support the grade change, a target for at least one controlled variable and a target for at least one manipulated variable are identified. The at least one manipulated variable and the at least one controlled variable are associated with the production of the product. A trajectory for the at least one manipulated variable and a corresponding trajectory for the at least one controlled variable are identified using the targets. The grade change is implemented using the trajectories so as to transition from production of the product having the first grade to production of the product having the second grade.

Abstract: A method in a paper or board machine for confining a pulp flow coming from the headbox (1), in which by at least one deckle part (2) being above the wire in the operating position the pulp flow coming from the headbox is confined in the lateral direction in the edge area of the wire (3). In the method, by a support part (50) impervious to liquid being below the wire (3) together with the deckle part (2) into connection with which liquid is brought, a pressure effect is provided which furthers the sealing between the deckle board (2) and the wire (3) and intensifies the lubrication of at least one sealing surface of the deckle (2). The invention also relates to an apparatus.

Abstract: Virgin stock is conducted to a paper or board machine and further to a centrifugal cleaner installation (12) into its first centrifugal cleaner step (12a1). From the first centrifugal cleaner step (12a1) the accept is conducted into a multi-layer headbox (10) to form a layer of the web determined according to the concerned fraction. From a second step (12a2) and/or from lower steps (12a3, 12a4 . . . ) of the centrifugal cleaner installation (12) a second fraction or more fractions are conducted into the multi-layer headbox (10) to form a second layer or other layers of the web, which are determined according to the pulp fractionation taking place in the concerned second step or lower steps.

Abstract: A process is described for manufacturing a paperboard from a high consistency slurry containing high levels of crosslinked cellulosic fibers by dispersing the fibers in a screen with a rotor in the screen and then passing the fibers through the screen basket with a hole diameter of at least 2 mm and forming the cellulosic fibers on a foraminous support. Another slurry of regular cellulosic fibers is deposited on at least one side of the first slurry during the formation process. The formed web is dewatered and dried.

Abstract: The present invention relates to a process for applying optical brightening agent (OBA) to a sheet of paper or paperboard substrate. The process comprises the step of spraying an aqueous composition comprising an optical brightening agent onto at least one surface of a sized paperboard substrate to form a treated paperboard substrate. The treated paperboard substrate includes a layer of OBA on at least one surface of the paper or paperboard substrate in which the brightness of the treated paper or paperboard substrate is greater than the sized paper or paperboard substrate before treating thereof.

Abstract: The roll properties of tissue sheets are improved either by imparting cross-machine direction dominant bar-like protrusions to the air side of the tissue by using specially woven transfer fabrics and/or by offsetting recurring surface features of the sheet relative to the surface features of adjacent sheets within the roll, such as by providing a throughdryer fabric with an offset seam. Both techniques provide the resulting tissue sheets with improved capabilities for providing an improved combination of roll bulk and roll firmness.

Abstract: A soft crepe paper machine comprises a wet section with a press section having a press defined by first and second press elements forming a press nip through which a press felt runs with a paper web. A suction roll is arranged in the loop of the press felt before the press nip at a distance from the second press element, and the felt with the web thereon runs around the suction roll with a large wrap angle. A drying cylinder forms the second press element. The first press element is either a solid press roll, a suction press roll, or a variable crown press roll.

Abstract: The invention provides a method of preventing contamination of a dryer of a paper machine so that predetermined effects of contamination prevention over the long term can always be ensured while maintaining satisfactory drying efficiency. With the method of preventing contamination of the surface of the drum dryer used in a paper machine, a predetermined amount of a surface treatment agent P is continuously supplied to the surface of the drum dryer C1 in rotation, facing a paper strip W, while the paper strip is being fed by the paper machine in operation.