EP2090693A2 - Procédé et dispositif de commande et/ou de réglage de l'humidité d'une bande de matériau et machine de fabrication d'une bande de matériau dotée d'un tel dispositif - Google Patents

Procédé et dispositif de commande et/ou de réglage de l'humidité d'une bande de matériau et machine de fabrication d'une bande de matériau dotée d'un tel dispositif Download PDF

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Publication number
EP2090693A2
EP2090693A2 EP08171899A EP08171899A EP2090693A2 EP 2090693 A2 EP2090693 A2 EP 2090693A2 EP 08171899 A EP08171899 A EP 08171899A EP 08171899 A EP08171899 A EP 08171899A EP 2090693 A2 EP2090693 A2 EP 2090693A2
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EP
European Patent Office
Prior art keywords
moisture
profile
controlling
regulating
material web
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Withdrawn
Application number
EP08171899A
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German (de)
English (en)
Other versions
EP2090693A3 (fr
Inventor
Werner-Marcus Schmidtke
Uwe Fetzer
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Voith Patent GmbH
Original Assignee
Voith Patent GmbH
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Voith Patent GmbH filed Critical Voith Patent GmbH
Publication of EP2090693A2 publication Critical patent/EP2090693A2/fr
Publication of EP2090693A3 publication Critical patent/EP2090693A3/fr
Withdrawn legal-status Critical Current

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Classifications

    • D—TEXTILES; PAPER
    • D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
    • D21F—PAPER-MAKING MACHINES; METHODS OF PRODUCING PAPER THEREON
    • D21F7/00—Other details of machines for making continuous webs of paper
    • D21F7/003—Indicating or regulating the moisture content of the layer
    • D—TEXTILES; PAPER
    • D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
    • D21G—CALENDERS; ACCESSORIES FOR PAPER-MAKING MACHINES
    • D21G7/00—Damping devices
    • D—TEXTILES; PAPER
    • D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
    • D21G—CALENDERS; ACCESSORIES FOR PAPER-MAKING MACHINES
    • D21G9/00—Other accessories for paper-making machines
    • D21G9/0009—Paper-making control systems
    • D21G9/0045—Paper-making control systems controlling the calendering or finishing

Definitions

  • the invention relates to a method for controlling and / or regulating the moisture, in particular final moisture of a material web after passing through the dry part in a machine for producing webs, in which the moisture profile is controlled by application of application in the form of a fluid and / or fluid / gas mixture / is regulated.
  • the invention furthermore relates to a device for treating a material web, in particular an application device for applying an application medium in the form of a fluid and / or fluid / gas mixture in an application area to a material web, comprising a device for controlling and / or regulating the moisture transverse profile and a machine for production a material web with such a device.
  • a nozzle moistener for a machine for the production of fibrous webs previously known, having a plurality of machine width arranged nozzles for spraying a relative to this relatively movable material web.
  • a nozzle moistener is used in the dryer section, which is suitable for applying binder to avoid a lengthy change within the machine. If the material web is to be suitable for both sides offset printing, the web is moistened on both sides by means of the Düsenbefeuchters.
  • the nozzle humidifier may be further configured to include a series of nozzles for the passage of water and / or a binder solution.
  • This configuration makes it possible to cope with the special properties of binder solutions, so that the nozzles can be adapted according to the different consistency, the toughness and the volume throughput. It is conceivable that for at least one of the rows of nozzles passing through the binder, means are used which regulate or control the longitudinal profile and / or transverse profile of the applied mass of binder over the machine width. This makes it possible to either ensure a consistent application layer during the manufacturing process or even to regulate and / or control the transverse profile of the layer thickness over the web. The arrangement of the application device takes place in the dryer section.
  • a machine for producing a material web which has a device which simultaneously serves both to influence the moisture transverse profile and to influence the so-called curl of the material web.
  • the moisture cross profile and the curl can be influenced separately from each other.
  • the curl is understood to mean the curl of paper webs.
  • a fluid is applied evenly over the web width by means of nozzles. It is essential that the admission takes place either unilaterally or with two-sided admission at least in different quantities.
  • the nozzle humidifier is also used here in the dryer section.
  • a machine for the production of fibrous webs which has a plurality of, preferably two moistening devices, in different positions relative to the material web within the dryer section.
  • the amount of liquid applied to the fibrous web is separately adjustable in zones transversely to the direction of web travel in order to improve the moisture transverse profile and the tendency of the fibrous web to curl.
  • a major disadvantage of the previous embodiments is that especially at a speed increase, the required amount of liquid must be traced to the nozzle humidifier manually.
  • This manual readjustment takes place with a time delay, so that the areas of the material web passing through the application device, in particular the nozzle moistener, in this period of time are characterized by different surface properties compared with the optimally controlled surface quality before the speed change.
  • the accuracy of the adjustment is limited by the manual adjustment.
  • the invention is therefore based on the object, a method and apparatus for controlling and / or regulating the moisture of a web following the dryer section, in particular for the realization of an optimal final moisture control before winding in a winding station in the machine for the production of fibrous webs regardless of to develop the machine speed.
  • the solution according to the invention should be characterized by a low design and control engineering effort.
  • An inventive method for controlling and / or regulating the moisture, in particular final moisture content of a web after passing through the dry part in a machine for producing webs in which the moisture profile is controlled by application of application agent in the form of a fluid and / or fluid / gas mixture , Is characterized in that at deviation of the final moisture of a predefined setpoint value first, the moisture profile is kept constant and controlled as a manipulated variable, the moisture profile of the material web in the machine direction / is controlled.
  • the solution according to the invention optimally enables rapid adaptation with regard to the required setpoint values for the final moisture content, by which the moisture content of the material web immediately before or in the take-up device is understood.
  • the compensation takes place via the control / regulation of the moisture in the machine direction.
  • the moisture transverse profile is then controlled / regulated in a tracking control.
  • the cross profile control is used to fine tune the moisture profile.
  • the final moisture content of the material web is controlled / regulated in the region of a reeling device arranged downstream of the drying part.
  • the required adjustment of the moisture CD profile and the moisture profile in the machine direction takes place in a machine part arranged behind the dry part, i. after the drying device.
  • this possibility is of particular advantage, since here higher drying performance in the drying device can be compensated by the change in the moisture content of the material web taking place via the quantity control in the machine direction.
  • the control / regulation of the moisture profile and the moisture profile in the machine direction is carried out by controlling / regulating at least one, the amount of application to the material web in these directions, at least indirectly characterizing size.
  • a predefined total application quantity is predetermined on the material web, wherein a first portion of the application agent to be applied for controlling the moisture cross profile and a second portion of the application agent to be applied for controlling / regulating the moisture profile in the machine direction, and the first portion and the second portion are selected in an initial ratio to each other, preferably of about 1: 1.
  • the solution according to the invention thereby makes it possible to optimally adjust the final moisture in accordance with the requirements before winding up the material web.
  • the simultaneous control / regulation of the moisture profile and the moisture profile in the longitudinal direction in only one area of the material web in the machine direction it is possible to use the overlay effect of this locally and optimally coordinated.
  • the total application amount is preferably kept constant.
  • a desired application quantity of the control / regulation of the moisture profile is determined in the longitudinal direction of the material web as a function of a material properties characterized by material web characteristics at least indirectly characterizing actual sizes moisture moisture profile, the required application amount of the control / regulation of the moisture profile in the machine direction as a function of required amount of application for controlling / regulating the moisture profile is determined.
  • the moisture transverse profile is kept constant and the moisture profile of the material web in the machine direction is controlled / regulated as a manipulated variable by changing the total application quantity.
  • the setpoints for the required with the individual controls / regulations of the moisture profile and the moisture profile in The longitudinal direction of the material web can be specified by a control / regulation which is superordinate to these controls / controls and the control / regulation of the moisture profile in the machine direction preferably takes place independently of the control / regulation of the moisture transverse profile.
  • the total application amount is preferably divided by tracking the control / regulation of the moisture profile in the direction of the initial ratio of the application amounts of control / regulation of the moisture profile and the moisture profile in the machine direction to a high proportion of the application amount for generating the profile and thus to provide the differences in the transverse direction.
  • the application amount of the control / regulation of the moisture cross profile is automatically adjusted.
  • a required moisture profile can be specified as a desired profile.
  • the order quantity required for the control / regulation of the moisture transverse profile then forms the basis for the control / regulation of the moisture profile in the machine direction with a still constant application quantity for the moisture cross profile control.
  • the first embodiment it is therefore possible to start from a possible total application quantity which is to be applied via the individual controls / regulations and preferably corresponds to the total quantity before the change.
  • the adaptation and adjustment of the required final moisture is carried out via the control / regulation of the moisture in the machine direction and subsequent adjustment of the total application amount.
  • a new specification of a total application quantity and assignment to the individual controls / regulations takes place in an initial ratio, preferably in equal parts. This means that the proportion of control / regulation of the moisture profile in the machine direction is determined on the basis of the moisture profile control.
  • the individual controls / regulations of the moisture cross-section and the moisture profile in the machine direction can be carried out independently of each other.
  • the setpoints for the two controls / controls are centrally specified via a higher-level controller / controller.
  • the moisture profile of the previous controls / controls of the moisture profile, in particular the setpoint values specified for these would change Adaptation of the setpoints via the higher-level control / regulation.
  • the method according to the invention for controlling and / or regulating the moisture content of a material web in a machine for producing such material webs is characterized in that the drying section downstream of a control and / or regulation of the moisture profile and the moisture profile in the machine direction connected in series or superimposed on each other, wherein the flow rate to the individual nozzles of the respective control with respect to the total flow for the CD control is at least 50%.
  • the ratio must be restored so that it is monitored and adjusted.
  • a device for controlling and / or regulating the moisture profile in the machine direction in addition to the device for controlling the moisture transverse profile in the application area, wherein the devices are each characterized by an effective range with respect to the material web and are designed and controllable by means of the device for the control and / or regulation of the moisture transverse profile applied application amount based on the total order quantity of facilities ⁇ 50%, preferably in the range between 50 and 80% of the total order amount. This ensures that there is always a moisture cross-profiling with a predefined target profile.
  • the humidity control device is characterized in that it comprises a device for controlling and / or regulating the moisture transverse profile and a device for moisture profile control in the machine direction comprises, wherein the areas of action of both devices are either connected directly in series or overlap each other.
  • the individual devices comprise at least one row of nozzles, preferably in each case a plurality of rows of nozzles arranged over the width of the material web to be moistened.
  • the number of nozzles per meter of web width is between 10 and 100, preferably 20, to avoid an undesired overlay of the spray cone to 50.
  • a plurality of rows of nozzles is provided in the machine direction.
  • FIG. 1 shows a schematic simplified representation of the basic structure of an inventively designed device 1 for controlling and / or regulating the moisture, in particular the final moisture content of a material web M, in particular a fibrous web F in the form of a paper or board web.
  • This comprises a device 2 for controlling and / or regulating the moisture transverse profile and a device 3 for controlling and / or regulating the moisture profile in the longitudinal direction of the material web, which corresponds to the machine direction MD when passing through the machine.
  • Machine direction MD is understood to mean the direction of passage of the material web M through a machine for producing material webs M, in particular fibrous webs.
  • the direction perpendicular thereto is called the width direction or so-called CD direction.
  • the individual devices 2, 3 are constructed and arranged relative to one another such that they either overlap with respect to their effect or become effective immediately after one another on the material web M in a region W in the machine direction MD.
  • the effective ranges of the individual devices 2 and 3 are denoted by W2 and W3. These describe the application area on the material web M.
  • the devices 2, 3 each comprise at least one row of nozzles, whose operation can be influenced by means of a control / regulation.
  • the devices 2, 3 comprise for this purpose a control device 9 and 20, which is either formed by a central control device 21 or coupled to a central control device 21.
  • control device includes at least all components and units that serve the processing and evaluation of input variables and the formation of manipulated variables. It can be Central control devices in which all functions are integrated in a control unit or decentralized control devices, in which the individual components are arranged spatially separated from each other and are connected to each other via a communication network act.
  • the device 2 for controlling and / or regulating the moisture transverse profile comprises at least one row 4 of nozzles 5.1 to 5.n, to each of which means 6 for influencing the inlet to a nozzle are assigned.
  • each of the nozzles, here 5.1 to 5.n means 6. 1 to 6.n assigned.
  • This is realized in the simplest case in that all the nozzles 5.1 to 5.n are coupled to a central distributor 7, the corresponding means 6 being arranged in the connection between the central distributor 7 and the respective nozzle.
  • the device 3 for controlling and / or regulating the moisture profile in the machine direction MD also comprises at least one row 10 of nozzles 11, in particular 11.1 to 11.n, which are coupled in parallel to a central distributor 12.
  • the same central distributor 7 or 12 is preferably used for both devices 2, 3.
  • Decisive is the division of the effect of both devices 2 and 3 in the device 1.
  • the device 1 is designed as a structural unit. This is designed as a nozzle moistener.
  • the individual nozzles 5.1 to 5.n or 11.1 to 11.n are designed either as single or two-substance nozzles.
  • the flow rate to the nozzles 5.1 to 5.n must total about 50% or more of the total amount, which is composed of the inflow amount to the nozzles 5.1 to 5.n and 11.1 to 11.n.
  • the inflow amount in the direction of the nozzles 5.1 to 5.n and thus the flow rate by the nozzles 5.1 to 5.n in relation to the total sum of the flow rate of the nozzles 5.1 to 5.n and the nozzles 11.1 to 11.n in the range between and including 50 to 90%, preferably between 55 to 85%, most preferably between 60 to 80%. This depends on the weighting of the individual control / regulation. Water is used as the application medium for moistening.
  • the required total flow rate DM total which the sum of the flow rate by the individual nozzles 5.1 to 5 .n for controlling the humidity profile and 11.1 to 11.1 for controlling the moisture profile in the longitudinal direction corresponds, ie the application amount, which is characterized by the sum of the flow rate of the nozzles 5.1 to 5.n, in view of the weighting of the individual controls / regulations , which is writable by a weighting factor FG, divided and adjusted to the individual controls.
  • the application quantity applied via the control / regulation of the moisture cross profile is kept constant, while a particularly higher moisture content in the machine direction is set by increasing the application amount in this direction and thus increasing the final moisture content.
  • 70% based on the total application amount over the control / regulation of the moisture profile in the longitudinal or machine direction to ensure a rapid adjustment of the final moisture applied, while only 30% of the total application amount for the control / regulation of the moisture profile is used.
  • this is shifted in the direction of the control / regulation of the moisture profile or the moisture profile in the longitudinal direction. If the weight is on the control / regulation of the moisture cross-section, the flow rate to the device 2 is increased, otherwise reduced. In this case, this is adjusted to the control / regulation of the moisture cross-section at approx. 80% when weighting, and when weighting to the control / regulation of the moisture profile at 60%.
  • a tracking of the control / regulation of the moisture cross profile takes place again after setting a safe mode of operation.
  • the newly set flow rate DMCD newly determined in the device 2 for controlling and / or regulating the moisture profile FG ⁇ DM total 2 ⁇ ⁇ DMCDneu ,
  • the arrangement of the devices 2 and 3 in the device 1 there are a number of possibilities. These are essentially determined by the arrangement of their areas of action W2, W3 to each other. Here, a distinction is made between different variants, these are essentially three variants.
  • the arrangement of the devices 2 and 3 in the machine direction MD is considered and thus in the longitudinal direction of the material web M immediately after one another.
  • the device 1 acts in a region W on the material web, which is characterized by the extension of the two effective regions W2, W3.
  • the arrangement of the device 3 in the machine direction takes place before the device 2.
  • the effective ranges do not overlap.
  • the material web M is first exposed to the moistening via the device 3, which controls the moisture profile in the longitudinal direction of the material web M. This is followed by control / regulation of the moisture cross profile.
  • FIG. 2b illustrates the FIG. 2b an embodiment with at least partial superimposition of the operating and effective ranges W2, W3 of the two devices 3 and 4 in MD direction.
  • the two devices 2 and 3 are effective in this case on opposite surfaces of the material web M.
  • the devices 2, 3 are arranged offset to one another in the MD direction.
  • Figure 2c is in a sub-variant of an overlapping arrangement of the areas of action according to FIG. 2b achieved a complete overlap of the impact areas W2, W3 of the facilities 2 and 3. These are viewed in the machine direction MD in the vertical direction either one above the other or in the horizontal direction next to each other, wherein the material web M is passed between the two, so that both act on the respective opposite surfaces 13 and 14 of the material web M.
  • FIGS. 2a to 2c clarify basic variants. Possible advantageous arrangements in a machine for producing material webs are in the FIGS. 3a to 3c played.
  • FIG. 3a illustrates in schematic simplified representation of the basic structure of a machine for the production of material webs on the basis of a section of this.
  • a dry part 15 comprising at least one single-row or double-row dry assembly, which are designated here with 15.1 and 15.2.
  • a device 16 for detecting the properties of the material web at least indirectly characterizing quantities in particular in the form of a scanner.
  • the device 1 according to the invention which is arranged in front of a post-treatment unit or a winding device 17.
  • a further device 18 is provided in front of it for detecting at least one variable which at least indirectly characterizes the properties of the material web.
  • the device 1 is arranged below the material web M. This means that this is effective on the surface 14 and thus the underside of the material web M. Both devices 3 and 2 are connected in series.
  • the surface 14 of the material web M is first exposed to the device 3 and subjected in the direction of passage of the control and / or regulation of the moisture profile in the machine direction MD. This is followed by a control and / or regulation of the moisture transverse profile when moving along the device 2.
  • a device 1 is selected in the form of a Düsenfeuchters having a device 2 with at least two rows of nozzles with a distance between the individual nozzles in the transverse direction, that is CD direction of 50 mm and a device 3 for control and / or Regulation of the moisture profile in the machine direction MD, comprising two nozzle rows for humidity control in the machine direction MD.
  • the arrangement is made below the material web M.
  • the two devices 2 and 3 are connected in series with respect to their effective range W2, W3 and form the application area W.
  • the air pressure is in this range W between 0.1 and 0.3 bar.
  • the fluid to be applied has a temperature of 40 to 50 ° C.
  • the nozzles are arranged opposite the surface 14 of the material web M at the bottom at a distance of 80 to 110 mm. This distance is characterized by the shortest distance between the surface 14 and the exit from a single nozzle.
  • FIG. 3b illustrates an embodiment with overlapping of the action areas W2, W3 both institutions 2 and 3 according to Figure 2c ,
  • the basic structure of the arrangement between dry part 15 and winding device 17 corresponds to that in the FIG. 3a described.
  • the guide of the material web M takes place here between the two devices 2 and 3, wherein the web guide is arranged in the region of the device 1 perpendicular or at an angle to the machine direction MD and the two devices 2 and 3 arranged vertically are.
  • one of the two devices 2 or 3 on the surface 13 of the material web M is effective, while the other is effective at the same time on the oppositely directed surface 14.
  • FIG. 3c illustrates the Figure 3c an education according to FIG. 3b , but with arrangement one above the other with horizontal web guide.
  • the transverse profile control and thus the device 2 is preferably arranged below the material web M, while the device 3 for controlling and / or regulating the moisture profile in the machine direction MD is arranged above the material web M and becomes effective on the surface 13.
  • the effective ranges W2, W3 of the two devices 2 and 3 overlap.
  • the execution according to Figure 3c is operated in a particularly advantageous manner also with water and air.
  • the air pressure is in the range of 0.1 to 0.3 bar and the fluid has a temperature of 15 to 50 ° C.
  • the distance between the material web and the nozzle is between 60 to 100 mm.
  • FIG. 4 illustrates an advantageous application using the example of an embodiment according to FIG. 3b
  • the basic structure here corresponds to that in the FIG. 3b described, between the winding device 17 and the device 1, a calender 19 is arranged, preferably in the form of a Mehrnipkalanders.
  • the device 1 is arranged upstream of the calender 19.
  • the calender 19 is followed by a device 22 for detecting at least one of the properties of the material web at least indirectly characterizing size.
  • the nozzles of the individual devices are preferably operated with water and air.
  • the air pressure is in the range of 0.4 to 0.8 bar
  • the fluid has a temperature of 20 to 60 ° C and the distance between the exit of the nozzles and the surface of the material web is between 60 to 100 mm.
  • nozzles there are many possibilities with regard to the type of nozzles that can be used. Preference is given to using multi-substance nozzles, in particular two-component nozzles or pneumatic atomizer nozzles. In this case, the nozzles may be internally mixing or externally mixing nozzles. Regarding the geometric Execution preferably full cone, hollow cone or flat jet nozzles with a spray angle between 20 to 70 degrees, preferably between 20 to 60 degrees, most preferably used between 25 and 55 degrees for use. As application media find fluids, especially water, chemicals and additives for this use.
  • the temperature of the applied application medium is between 5 and 100 ° C, preferably between 40 to 55 ° C.
  • a sputtering gas is used, as which air or steam or other gas is used, but preferably a waste gas which is produced anyway in a machine for the production of fibrous webs.
  • the spray rate per nozzle is in the range between 1 to 50 liters per hour, preferably between 2 to 35 liters per hour.
  • the volume of the atomizing gas is in the range between 1 to 10 Nm 3 / h, preferably between 4 to 8 Nm 3 / h.
  • the arrangement of the individual nozzles 5.1 to 5.n and 11.1 to 11.n of the individual devices 2, 3 with respect to the respective surfaces 13, 14 of the material web M is between 30 and 150 mm, preferably between 60 and 110 mm.
  • the number of nozzles 5.1 to 5.n, 11.1 to 11.n of the rows 4, 10 in the transverse direction is 10 to 100 per meter of web width, preferably 20 to 50 per meter of web width.
  • Each of the devices 2, 3 preferably comprises at least two rows of nozzles, which are connected in series in the machine direction MD.
  • the nozzles are arranged in multiple rows with respect to the MD control so that the spray cones do not overlap.
  • the nozzles are individually controllable or common to several or all nozzles.
  • zonal control and / or regulation takes place at least in the device 2 for controlling and / or regulating the moisture transverse profile 2.
  • the sputtering media can all be controlled individually or for all nozzles together.
  • the control can be done for example with a pulse width modulated open-close valve or a needle valve.
  • An inventive method for controlling the moisture content of a material web M, in particular the final moisture before the winding device 17 when changing the operating parameters, such as speed is in the FIG. 6 reproduced on the basis of a signal flow picture.
  • the required application quantities DMCD and DMMD are determined as a function of the weighting of the adjustment of the individual profiles in the longitudinal and transverse directions and predetermined for the manipulated variables Y by activation of the adjustment devices , as in FIG. 5 regulated. If the operating parameters B remain constant and there is no change in the actual values of the properties of the material web, the controls / controls of the devices 2, 3 remain unchanged. If operating parameters B change, the application quantities DMCD are adjusted and, depending on this, DMMD is changed by changing Y.

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  • Treatment Of Fiber Materials (AREA)
EP08171899.1A 2008-02-13 2008-12-17 Procédé et dispositif de commande et/ou de réglage de l'humidité d'une bande de matériau et machine de fabrication d'une bande de matériau dotée d'un tel dispositif Withdrawn EP2090693A3 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE200810000288 DE102008000288A1 (de) 2008-02-13 2008-02-13 Verfahren und Vorrichtung zur Steuerung und/oder Regelung der Feuchte einer Materialbahn und Maschine zur Herstellung einer Materialbahn mit einer derartigen Vorrichtung

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Publication Number Publication Date
EP2090693A2 true EP2090693A2 (fr) 2009-08-19
EP2090693A3 EP2090693A3 (fr) 2013-07-17

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EP08171899.1A Withdrawn EP2090693A3 (fr) 2008-02-13 2008-12-17 Procédé et dispositif de commande et/ou de réglage de l'humidité d'une bande de matériau et machine de fabrication d'une bande de matériau dotée d'un tel dispositif

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102012211656A1 (de) * 2012-07-04 2014-01-09 Voith Patent Gmbh Verfahren zur Verbesserung von Qualitätseigenschaften einer Faserstoffbahn

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Publication number Priority date Publication date Assignee Title
FI125147B (fi) * 2011-08-31 2015-06-15 Valmet Technologies Inc Järjestelmä ja menetelmä paperin tai kartongin valmistamiseksi
DE102011086056A1 (de) * 2011-11-10 2013-05-16 Hochschule Heilbronn Institut für angewandte Forschung Vorrichtung zum Aufbringen von Flüssigkeiten auf Warenbahnen

Citations (3)

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Publication number Priority date Publication date Assignee Title
DE19921592A1 (de) 1999-05-07 2000-11-09 Voith Sulzer Papiertech Patent Applikationsvorrichtung und -verfahren für eine Papiermaschine
DE10233795A1 (de) 2002-07-25 2004-02-12 Voith Paper Patent Gmbh Trockenpartie
DE10241944A1 (de) 2002-09-10 2004-03-18 Voith Paper Patent Gmbh Einrichtung und Verfahren zur Herstellung und/oder Behandlung einer Faserstoffbahn

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Publication number Priority date Publication date Assignee Title
DE69915836T2 (de) * 1998-07-10 2005-04-21 Metso Paper Inc Verfahren und vorrichtung zur herstellung von oberflächenbehandeltem druckpapier
DE10205220A1 (de) * 2002-02-08 2003-08-21 Voith Paper Patent Gmbh Verfahren und Vorrichtung zur Herstellung und Behandlung einer Materialbahn
DE10326763A1 (de) * 2003-06-13 2005-01-20 Voith Paper Patent Gmbh Vorrichtung zur Herstellung und/oder Behandlung einer Faserstoffbahn

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19921592A1 (de) 1999-05-07 2000-11-09 Voith Sulzer Papiertech Patent Applikationsvorrichtung und -verfahren für eine Papiermaschine
DE10233795A1 (de) 2002-07-25 2004-02-12 Voith Paper Patent Gmbh Trockenpartie
DE10241944A1 (de) 2002-09-10 2004-03-18 Voith Paper Patent Gmbh Einrichtung und Verfahren zur Herstellung und/oder Behandlung einer Faserstoffbahn

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102012211656A1 (de) * 2012-07-04 2014-01-09 Voith Patent Gmbh Verfahren zur Verbesserung von Qualitätseigenschaften einer Faserstoffbahn

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EP2090693A3 (fr) 2013-07-17

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