Abstract: Machine and process for operating machine having at least one roll and an opposing surface arranged to form at least one nip. The machine includes at least one roll and an opposing surface arranged to form at least one nip. A sound measuring device is arranged to conduct sound measurements in at least one of an area of the at least one roll and an area of the at least one nip to monitor vibrations in the at least one roll and/or in the at least one nip. The instant abstract is neither intended to define the invention disclosed in this specification nor intended to limit the scope of the invention in any way.

Abstract: The invention provides a method of preventing contamination of a dryer of a paper machine so that a predetermined anti-fouling effect can always be ensured over a long term while maintaining satisfactory drying efficiency. With the method of preventing contamination of the surface of a drum dryer used in a paper machine, according to the invention, a predetermined amount of a surface forming agent P is continuously supplied to the surface of the drum dryer D1 in rotation, facing a paper strip W, while the paper strip W is being fed by the paper machine in operation.

Abstract: A vibration-minimizing suspension mechanism for a press roll is provided. The press roll and an opposing roll each having a rotational axis and cooperate to form a press nip for imparting a linear load on a web passing therethrough. The linear load is oriented through the rotational axes of the press and opposing rolls. The suspension mechanism comprises a suspension arm having opposed ends and a medially-disposed pivot, wherein the rotational axis of the press roll is rotatably engaged with one of the opposed ends. The suspension arm is pivotably and adjustably mounted at the pivot to allow the pivot to be adjusted in substantially parallel relation to the linear load. The adjustable pivot thereby allowing a mounting line, defined by the pivot and the rotational axis of the press roll, to be maintained in substantially perpendicular orientation to the linear load to thereby minimize vibration in the press roll.

Abstract: A machine for producing a tissue web is provided, including a former having a forming region which includes at least one circulating, continuous dewatering wire having zonally variable wire permeability. Furthermore, a process for producing the tissue web in a tissue machine is provided. The process includes forming the tissue web in a forming region of a former, wherein the forming region includes at least one circulating, continuous dewatering wire having zonally variable wire permeability.

Abstract: A system for removing dust, dirt and like from the surface of a flexible paper substrate and accurately positioning same comprises a transport assembly for conveying the paper substrate along a path of travel. The transport assembly includes a rotating vacuum drum having an outer surface over which the paper substrate is trained in the direction of drum rotation as it moves along the path of travel. Openings are provided in the outer surface of the vacuum drum, and a suction source is connected to those openings so that dust, dirt and the like on the surface of the paper substrate are drawn away by the suction as the paper substrate moves along the path of travel over the drum. The linear speed of the paper substrate is slightly more or less than the surface velocity of the vacuum drum so that the paper sweeps across the drum surface during the cleaning process.

Abstract: Compositions and method for improving inhibition of calcium salt scale formation under the conditions found in chemical pulp processes in which an effective amount of selected phosphonates or phosphonate blends is admixed with the aqueous digester composition in a chemical pulping process during the digestion stage. The compositions and method are especially well suited for use in the Kraft pulping process.

Abstract: A method of stabilizing the seam loops of a papermaking fabric or other industrial fabric until the fabric is ready to be installed and seamed on a machine. Stabilizing the loops prevents torque imbalance and other forces from distorting the loop alignment over time, thereby making the loops easier to connect and seam when the fabric is ready to be installed.

Abstract: A method for controlling Pitch and Stickies is disclosed. The method comprises adding hydrophobically modified hydroxyethyl cellulose (HMHEC) and cationic polymers to a cellulosic fiber slurry (pulp) or to a paper process or to a paper making system and results in a higher degree of inhibiting organic deposition and retention of pitch on paper fiber as compared to the inhibition of the individual ingredients. The combination of HMHEC and cationic polymers surprising results in a synergistic effect.

Abstract: The present invention relates to a method for controlling pitch and stickies deposit in a pulp and papermaking process using crosslinked cationic polymers made by controlled addition of a water soluble radical initiator at reaction temperature with agitation for chain extension and crosslinking.

Abstract: A method and device for installing a belt onto a long nip press or calender of the shoe type. The belt to be installed has a number of opposing flaps on each edge for securing the belt to the press. The flaps are inserted and passed through corresponding slots spaced around the rotating head ends of the press. Positioning wedge devices are slid into position on each flap and locking pins are inserted into holes in the flaps. The wedge devices effectively lock the flaps in place by securing the locking pins. The devices precisely align and tension the flaps on the press, thereby ensuring a proper installation of the belt. Once the flaps are secured to the press, the positioning devices and locking pins are removed.

Abstract: Methods for reducing or inhibiting deposition on or within press felts to increase the effective life of the press felt and reduce or eliminate the need for batch cleaning are disclosed. The methods disclosed treat press felt while paper is being produced with compositions containing at least one enzyme. Additionally, the enzymes can be applied in combination with other non-enzymatic felt conditioning products either by blending and applying at the same application point or by applying the enzyme and the non-enzymatic felt conditioning product at two different locations along the felt. The treatments are applied continuously or intermittently.

Abstract: A method for target application of a Performance Enhancing Material to a creping cylinder in order to improve a tissue making operation is described and claimed. The method involves dividing the creping cylinder into Zones and then applying the desired Performance Enhancing Material on a Zone by Zone basis such that each Zone has the optimal Performance Enhancing Material present. Furthermore, a method to ascertain the amount and pattern of application of the Performance Enhancing Material used on the creping cylinder is described and claimed. This method involves adding an inert fluorescent tracer to said Performance Enhancing Material and then to use a fluorometer to look for the tracer on the creping cylinder, and/or on the creped tissue product and/or in the water removed from the felt.

Abstract: The invention relates to a method for positioning a shoe of a shoe press/shoe clender in a paper machine. In the method, the position of the shoe (11) of the shoe calender/shoe press is measured and, based on the results of the measurement, the position of the shoe is controlled so as to be as desired in the direction of nip compression. The invention also relates to an arrangment for positioning a shoe of a shoe press/shoe calender in a paper machine, which arrangment comprises a shoe roll (10) or equivalent which includes a shoe (11) and hydraulic cylinders (12) connected thereto for moving the shoe (11). The arrangement comprises further at least two measuring devices (15) for measuring the position of the shoe (11) and means (12) for controlling the position of the shoe (11) based the results obtained by means of the measuring devices so as to be as desired in the direction of nip compression.

Abstract: A shower device for a papermaking machine is provided which includes a longitudinally extending hollow member having an inlet end adapted for connection to a pressurized water source. A slot extends longitudinally along at least a portion of the hollow member. The slot includes opposing edges and a strip of material is slideably engageable with the hollow member so that the hollow member is substantially sealed along the edges of the slot when the strip is installed. The strip of material includes a plurality of spaced apart shower nozzles. This allows a plurality of shower nozzles on a papermaking machine to be quickly and easily replaced by slidably removing the nozzle strip from the slot and slidably inserting a replacement strip of nozzles into the slot.

Abstract: A blade (20) for wiping water from a grooved sleeve (26) mounted on a press roll (14) in a paper making machine is adjustably mounted on the machine for movement toward and away from the sleeve (26). The wiper blade (20) is positionable against the surface of the sleeve (26) to wipe water therefrom adjacent and upstream from the nip between the sleeve (26) and a mating press roll (12).

Abstract: A process arrangement in the short circulation of a paper machine comprises devices (10-13) for dilution of thick stock, centrifugal cleaners (14), and a headbox fan pump (16), as well as a pipe system connecting these. There is a direct flow connection from the centrifugal cleaners (14) along a pipeline (30) to the headbox fan pump (16), through which pipeline (30) a centrifugally cleaned stock flow (F6) is passed direct to the headbox fan pump (16) without any deaeration or dilution stages in between. A secondary line (32) is connected to the pipeline (30) for passing through it part of the centrifugally cleaned stock flow as a return flow (F7) back to the thick stock dilution devices (10-13). By this arrangement it can be ensured that the pressure on the suction side of the fan pump (16) remains substantially constant.

Abstract: Process and apparatus for monitoring the condition of a rotating belt in a paper or cardboard machine. The process includes recording data related to a condition of the belt, and creating an at least two-dimensional image of the belt condition from the recorded condition data. The image depicts a condition characteristic in a machine travel direction and a condition characteristic in a machine crosswise direction. The instant abstract is neither intended to define the invention disclosed in this specification nor intended to limit the scope of the invention in any way.

Abstract: A vacuum device for a paper web making apparatus has a housing having an outer web-facing surface and a vacuum channel extending within the housing and having an opening at the web-facing surface. A vacuum source is in fluid communication with the vacuum channel and is operable to draw a vacuum on the paper web via the vacuum channel opening. A fluid delivery system is operable to deliver cleaning fluid into the vacuum channel wherein the vacuum source is operable during the delivery of cleaning fluid into the vacuum channel. In another embodiment, the fluid delivery system is operable to deliver cleaning fluid into the vacuum channel in a fluid delivery direction that is at least partially different from the direction of flow of the vacuum within the vacuum channel.

Abstract: A blade holder for a doctor and method for using the doctor is disclosed, in which in the front part there is a throat or similar for the doctor blade of the doctor and which blade holder has loading members connected thereto to press the doctor blade against the surface to be doctored. The blade holder further includes a relatively stiff, slightly flexible frame plate, which incorporates the attachment flange. The blade holder also includes loading devices for directing the force of the loading members onto the frame plate at a distance from the attachment flange, to bend the frame plate and thus press the doctor blade against the surface to be doctored.

Abstract: A method and arrangement in doctoring in a paper or board machine is disclosed in which the web travels through at least one press nip, in which the press nip is formed by at least a press roll and its backing roll and in which at least one roll is doctored using at least one doctor device. The press roll is doctored essentially over the width of the web.

Abstract: Apparatus for treating a fibrous web that includes at least one supporting surface arranged to support a surface of the fibrous web, and at least one sealing device positionable adjacent a surface of the web opposite the surface of the web supported by the at least one supporting surface. The at least one sealing device includes a sealing element and a holder structured and arranged to hold and to enable lateral sliding movement of the at least one sealing device cross-wise to a web travel direction.

Abstract: Water hydraulics are used in a paper or board machine, in particular in applications requiring lubrication and in the like in which an operating medium is subjected to pressure. A chemical which is used in the stock system (A) of the process is mixed with the water used in water hydraulics before the water is passed to a site of application (5) in order to raise the viscosity of the water and chemical mixture to a level required by the site of application (5). The water and chemical mixture is passed (3in) after that to the site of application (5) and circulated through the same at least once, after which said water and chemical mixture is recovered (2) and passed to the stock system (A) of the process as diluted to a suitable concentration.

Abstract: A dry end of a tissue machine is made shorter by close-coupling a reel-up to the drying section and supporting the web from the drying section to the reel-up by a foil or a belt such that web stability is maintained, thus allowing high-speed operation. The foil's downstream edge can form a nip with the paper roll and nip load can be controlled by controlling pivotal movement of the foil. The reel-up can include a calendering belt for calendering the web as it passes through a nip between the belt and a reel drum supported on the belt, and a rotatable reel spool on which a paper roll is wound in nipping engagement with the reel drum. Alternatively, the reel drum can be eliminated and the paper roll can be supported on the belt. A composite shaftless core for winding is also disclosed.

Abstract: A method for reducing a production of a slime in a papermaking process is provided. The method includes steps of adding a dispersing agent into the slime to obtain a first mixture, mixing and culturing the mixture, adding an antagonistic into the first mixture to obtain a second mixture, mixing and culturing the second mixture for reducing the production of the slime, and re-adding the antagonistic into the mixed and cultured second mixture after a specific time period for further reducing the production of the slime.

Abstract: A method of reducing the surface tension on papermaking rolls comprises applying to the papermaking roll an effective amount of a blend of catonic water soluble polymer, nonionic surfactant and anionic surfactant. The composition has an overall positive charge. Preferably the cationic polymer is a quatemary ammonium compound.

Abstract: The invention realtes to a method for controlling the operation of a paper, board or tissue production line (11, 12, 13, 14, 17, 18). A magneto-rheological or an electrolrheological fluid, whose flow characteristics are changed in a controlled way, is used in the method. The fluid is used as a lubricant between surfaces in a device consisting of a fixed surface and a surface that is moved over it as a heating medium, as the dampening or the power transmission agent of the movement of paper and/or board equipment (17, 18), or as a hydraulic fluid of the emergency opening cylinders of a set of calender rolls (1) of a paper and/or board machine.

Abstract: Process for conditioning a circulating felt belt of a machine, pipe suction apparatus and traversing pipe suction apparatus therefor, the process including performing a zonal conditioning of a plurality of zones across a width of the felt belt by measuring at least one of, fibrous material web cross direction profile; felt belt cross direction profile; and permeability of the felt belt across the width of at least one of the web and the belt. The felt belt is conditioned depending on measuring results obtained for a respective zone. The pipe suction apparatus includes a ceramic body extending at least essentially across the entire width of the felt belt, the ceramic body being provided with a slotted surface by way of which the felt belt is subjectable to vacuum, with a respective effective amount of slotted surface being zonally variably adjustable by way of movable tongues.

Abstract: A method to remove scale build-up in a vessel having at least one screen is described and involves placing a cover inside the vessel such that it is located beneath at least one screen to separate the screen from the rest of the vessel. The cover in the vessel forms an upper portion and a lower portion in the vessel. Preferably, the cover is in close proximity to the screen which is located in the upper portion of the vessel. The method then further includes introducing a chemical formulation into the upper portion of the vessel in a sufficient amount to remove at least a portion of the scale build-up on the screen. A system to remove scale build-up is also described and includes a vessel having at least one screen. The system further includes a cover located inside the vessel and beneath at least one screen to separate the screen from the rest of the vessel and to form an upper portion and a lower portion in the vessel. Normally the cover is in close proximity to the screen.

Abstract: Water draining device for a paper machine or the like, in particular for a felted press of such a paper machine, including a receiving tank extending at least essentially over the machine width. The receiving tank includes a first chamber that receives arriving water and is under ambient pressure, and a second chamber that is connected to the first chamber and is under vacuum, into which the water collecting in the first chamber is aspirated and from which the water is eventually drained. A water receiving device of improved efficiency is also provided by forming a water receiving device by at least one suction channel projecting into the wedge-shaped area between the upper press roll and the dewatering belt, and extending transverse to the pulp web, which suction channel is connected to a source of reduced pressure.

Abstract: The present invention relates to a method for removing water from a movable roll jacket surface in a wet section of a paper-making machine, which roll jacket surface preferably belongs to a flexible roll jacket in a shoe press, said method comprising the following steps: arranging a spray device next to the roll jacket surface, making available a collecting device which is provided with an opening and collects liquid, moving said roll jacket surface past said spray device, applying a medium onto said roll jacket surface with the aid of said spray device, and collecting liquid in said liquid-collecting device. The invention is characterized in that said medium is sprayed with high kinetic energy onto said roll jacket surface to follow a fluid stream rebounding from the roll jacket surface, so that the liquid is conveyed to said liquid-collecting device.

Abstract: Process for cleaning at least one roll of a calender. The process includes guiding a web over a surface of the at least one roll of the calender to be cleaned, and producing a relative speed difference between the surface of the least one roll and a section of the web lying against the surface of the a least one roll. The instant abstract is neither intended to define the invention disclosed in this specification nor intended to limit the scope of the invention in any way.

Abstract: The [invention relates to a method and equipment for cleaning rolls of a paper machine or board machine. In the method, the ]surface of a web is monitored by a fault detection system (20), a machine condition monitoring system, a quality measurement system, a web moisture measurement and/or a web temperature measurement and the soiled part of the surface of the roll is detected and localized by means of a soiling monitoring apparatus (31, 35; 60). [Information on the detection and location of soiling is delivered from the soiling monitoring apparatus (31, 35; 60) to a]A control system (41) [of the cleaning device, which ]controls [the]a cleaning device (40) to remove the detected soiling. [The equipment for cleaning rolls comprises of a soiling monitoring apparatus (31, 35; 60), a cleaning device (40) and a control system (41) for controlling the cleaning device (40).

Abstract: A method of reducing the surface tension on papermaking rolls comprises applying to the papermaking roll an effective amount of a blend of cationic water soluble polymer, nonionic surfactant and anionic surfactant. The composition has an overall positive charge. Preferably the cationic polymer is a quaternary ammonium compound.

Abstract: A method of cleaning a semipermeable membrane, the semipermeable membrane being configured for carrying a fiber web, includes the steps of providing a cleaning fluid and applying the cleaning fluid on the semipermeable membrane. Further, an air press configured for carrying the semipermeable membrane therethrough is provided, and the air press has pressurized air therein. The semipermeable membrane is conveyed through the air press and is subjected to the pressurized air within the air press. The pressurized air thereby flushes the cleaning fluid through the semipermeable membrane.

Abstract: A method for storing and handling a roll of a paper machine, board machine, or finishing machine includes using a special base arranged for the roll on which the roll is moveable from its operating location to a roll store and/or to a transport, or for storing the roll in the store. The base is made into a roll box inside of which suitable heat and humidity conditions are arranged for the roll. The conditions are maintained when using such a base or area as the roll store.

Abstract: Process for exchanging an intermediate roll in a calender and a calender. The calender has more than three rolls arranged to form a pressing plane obliquely oriented at a predetermined angle to a vertical, the intermediate roll to be exchanged being positioned immediately above a neighboring roll. The process includes lowering the neighboring roll at least a distance h defined by the equation: h=(r1+r2)(1−cos &agr;), in which r1 is a radius of the intermediate roll, r2 is a radius of the neighboring roll, and &agr; is the predetermined angle, and substantially horizontally removing the intermediate roll to be exchanged.

Abstract: The invention concerns a method for conditioning of a roll, in particular of a roll (10) in a paper machine or in a paper finishing device. In the method the face/coating on the roll of the paper machine is cleaned and/or ground. In the method, the cleanliness and/or condition of the roll (10) is/are measured continuously during operation and, based on the measurement results, the roll face/coating is cleaned and/or ground so that the roll (10) remains constantly in good condition and the level of quality of the paper remains at the desired level. The invention also concerns a device for conditioning of a roll, in particular of a roll in a paper machine and/or in a paper finishing device, which device (20) comprises means for cleaning and/or grinding the roll. The device (20) consist of an assembly (20) of devices which comprises a cleaning/conditioning unit (24, 23, 29), a control unit (33), and measurement units (30, 31, 32), and the device operates continuously and can be operated during running.

Abstract: A method and apparatus for controlling dust on paper machinery and the like is shown. A foil, a baffle and an exhaust are used to direct contaminated air away from the machinery and the sheet or web of material running through the machinery. Thus the deleterious effect of the contaminants is minimized and contained.

Abstract: A method for the manufacture or treatment of a material web, in particular of a paper or a cardboard web, while using a respective machine, in particular a paper machine, including the step of measuring the hardness and/or the compactness of at least one clothing, in particular of at least one felt, fabric, belt and/or the like, of the machine.

Abstract: Provided herein are compositions useful for inhibiting the formation of gummy residues on equipment in processing operations which liberate tiny adhesive particles having a tendency to agglomerate into larger particles and/or films. The compositions comprise a complex or adduct formed from styrene/methacrylic acid copolymer and calcium ions. The compositions according to the invention may be added to a processing system at any point, either upstream or downstream from the location at which residues are formed. Compositions according to the invention may be applied by spray techniques.

Abstract: A paper or board web is manufactured in an on-line manufacturing process, in which the web is passed from a paper or board machine (15) directly to a finishing device/finishing devices (60, 50, 10). The state of the finishing device/finishing devices (60, 50, 10) is monitored and, during a shutdown of a finishing device (60; 50; 10), said finishing device is bypassed, the web coming from the paper or board machine (15) is wound into machine reels and/or treated by means of some finishing device/finishing devices and wound into machine reels. A paper or board machine forms an on-line manufacturing process together with a finishing device/finishing devices.

Abstract: A shoe press head indexing system wherein axial tension is applied to a blanket in a shoe press of a papermaking machine by means of respective fluid actuated piston and cylinder assemblies which are mounted inside the blanket and apply axial pressure to the first and second heads between which the blanket is mounted. Neither head is fixed or limited in position at any time. The respective fluid assemblies include respective displacement sensors whereby the positions of the heads, and thereby of the blanket, relative to the press can be determined and monitored. Automatic adjustments can then be made to the pressure in the assemblies and hence to the positions of the heads to maintain the blanket in substantially central position on the press.

Abstract: A reversible foil blade for a papermaking machine providing for a plurality of activity zones wherein the drainage and sheet activity characteristics of the blade can be independently and separately predetermined, established, and controlled. The shape of the foil blade is designed to provide both leading and trailing edges that each form an angle less than 90° with the horizontal, the paper sheet and conveying forming fabric, thereby providing different drainage and sheet activity characteristics when the blade is reversed and installed in a reverse orientation.

Abstract: System and method for oxidizing contaminants to alter specific properties, such as tack, of contaminants. The present invention reduces the tack of the stickies and pitch by exposing the materials for a short duration to low-energy pulsed electrical discharges between a pair of electrodes that are submerged in a liquid medium, such as a fiber stream, water, a pulp slurry, or whitewater. An electrical discharge in the liquid medium oxidizes materials, which may be dissolved or suspended therein, such as stickies, pitch, sulfide, ink, toner, and other substances, thereby reducing tack, odor, and/or zeta potential, as well as producing other desirable effect.

Abstract: This invention relates to a method of repairing a moisture barrier separating a paper machine dryer drum from the dryer journal. Such processes of this type, generally, involve filling the cavity between the dryer drum steam intake pipe and the dryer journal with a flowable moisture barrier material. The flowable moisture barrier seals leaks in the dryer journal moisture barrier.

Abstract: A method for controlling dust on paper machinery and the like is shown. A foil, a baffle and an exhaust are used to direct contaminated air away from the machinery and the sheet or web of material running through the machinery. Thus the deleterious effect of the contaminants is minimized and contained.

Abstract: A system and method for altering the tack of a material, namely a polymer used as an adhesive, also known as stickies, or pitch. The present invention reduces the tack of the stickies and pitch by exposing the materials for a short duration to low-energy pulsed electrical discharges between a pair of electrodes that are submerged in a liquid medium, such as a fiber stream, water, a pulp slurry, or whitewater.

Abstract: The present invention relates to an apparatus for controlling the behavior of particulate matter such as mist and dust occurring in the manufacture of paper and board. A web (1) is passed to web treatment equipment (22, 23) wherein at least one treatment step is applied to the web (1) causing the emission of said particulate matter (24). In the vicinity of the emission point (21) of said particulate matter are placed at least two electrodes (25, 26) and at least one electrode, called a counter-electrode (26), is at a low potential. Further, at least one electrode (25) is at a potential higher than that of said counter-electrode (26), and the potential difference between said electrodes (25, 26) is made so high as to generate a corona discharge between said electrodes that causes an ion-blast wind toward the electrode (26) of the lower potential, said ion-blast wind being capable of transferring particular matter, which enters the gap between said electrodes, toward said electrode of lower potential.

Abstract: Disclosed is a method of improving the release of paper webs from the surface of press rolls or other paper making or converting equipment by applying to such a surface non-aqueous, non-curing hydrocarbon polymer compositions. The non-curing hydrocarbon polymers have the formula (CH3)3C—[—C(R1)(R2)—C(R3)(R4)—]n—C(R5)═C(CH3)2 (I) wherein R1 through R5 are hydrogen or —CH3, with at least one of R1 through R4 being —CH3, and n is such that the number average molecular weight of such hydrocarbon polymers is from 50 to 3000. They may be hydrogenated. Preferred non-curing hydrocarbon polymers are polybutenes of the formula (CH3)3C—[—CH2—C(CH3)2—]n—CH═C(CH3)2 (II). Preferred compositions comprise at least one such hydrocarbon polymer component having a number average molecular weight from 400 to 700 and a second such component having a number average molecular weight of 100 to 400.

Abstract: Process for laterally sealing at least one excess pressure or vacuum zone adjoining a moving surface in a paper-making machine by way of a sealing device that includes at least one sealing element, the process comprising arranging the sealing device in a receptacle area of a holder, placing the sealing device relative to the holder against the moving surface, wherein the receptacle area is designed as a clamping receptacle, and acting on the sealing element with a clamping force through clamping surfaces of the clamping receptacle during its movement relative to the holder and in its applied state.