EP1394322A1 - Calandre et procédé pour le traitement d' une bande de matériau - Google Patents

Calandre et procédé pour le traitement d' une bande de matériau Download PDF

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Publication number
EP1394322A1
EP1394322A1 EP03017245A EP03017245A EP1394322A1 EP 1394322 A1 EP1394322 A1 EP 1394322A1 EP 03017245 A EP03017245 A EP 03017245A EP 03017245 A EP03017245 A EP 03017245A EP 1394322 A1 EP1394322 A1 EP 1394322A1
Authority
EP
European Patent Office
Prior art keywords
sensor
roller
calender
web
calender according
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.)
Granted
Application number
EP03017245A
Other languages
German (de)
English (en)
Other versions
EP1394322B1 (fr
Inventor
Rudolf Münch
Ry Shead
Bruce Taylor
Pekka M. Typpo
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 Paper 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 Paper Patent GmbH filed Critical Voith Paper Patent GmbH
Publication of EP1394322A1 publication Critical patent/EP1394322A1/fr
Application granted granted Critical
Publication of EP1394322B1 publication Critical patent/EP1394322B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • D—TEXTILES; PAPER
    • D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
    • D21G—CALENDERS; ACCESSORIES FOR PAPER-MAKING MACHINES
    • D21G1/00—Calenders; Smoothing apparatus
    • D21G1/0073—Accessories for calenders
    • 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

Definitions

  • the invention relates to a calender for treating a Material web with several rollers in one Press direction interact and at least between themselves form a nip, through which a web path leads and with a sensor arrangement that is at least has a sensor that at least for detection a predetermined property of the material web suitable is.
  • the invention further relates to a method for treating a material web in which the material web passed through a roll stack and with Pressure is applied in a press direction, whereby predetermined measured values are detected by at least one sensor become.
  • the invention is based on a paper web described as an example of a material web. she is but can also be used with other material webs, for example Cardboard webs that are similar in one Calenders are treated.
  • Paper webs are made in the course of their manufacture guided a calender and there with an elevated Pressure and often with an elevated temperature applied. Through this pressure and temperature application you want certain properties of the paper web adjust or improve, for example surface properties, like gloss and smoothness, or a Uniform thickness profile transverse to the web running direction.
  • the sensor arrangement has a sensor which is used to detect a predetermined property is suitable. For example such a sensor can control the smoothness or gloss measure the surface of the paper web, the thickness, the Humidity, temperature or other properties.
  • a sensor is used that is transverse is moved to the direction of travel of the material web, that is approximately parallel to the axes of the calender Rollers. This is much cheaper than using a sensor that is simultaneously the corresponding over the entire width of the paper web Records measured values.
  • the invention has for its object the monitoring options in the calender in a simple way expand.
  • This task is performed on a calender of the type mentioned at the beginning Art solved in that the sensor has a detection side has, on which an air cushion can be generated is.
  • the air cushion allows the sensor to be used high accuracy at a desired distance to bring to the surface and hold there. In order to highly accurate measurement results are possible without a Intervention in the treatment of the material web is required is.
  • the senor is a sensor housing and has a sensor carrier which with the sensor housing encloses a pressure chamber and is movable with the Sensor housing is connected, with nozzles on the sensor carrier are provided, the air in a space between feed the sensor carrier and the area to be monitored. So the nozzles build a cushion of compressed air between them the sensor carrier and the area to be monitored on. At the same time, a pressure in the pressure chamber the sensor carrier towards the one to be monitored Surface advanced. This is possible thanks to the mobile Connection between the sensor carrier and the sensor housing, which can be formed for example by a bellows or a membrane.
  • the nozzles with a blow chamber stay in contact.
  • the senor be flexible is suspended and the air cushion on a curved Surface is self-adjusting.
  • the The sensor is therefore in the total area to be monitored Surface moves.
  • the actual adjustment of the Sensor carrier opposite the surface takes place over the Air cushion. This makes the accuracy requirements to the positioning drive of the sensor.
  • the sensor is preferably a contactless one Sensor trained. Accordingly, is not only for positioning the sensor on the one to be monitored There is no need to touch this surface, but also for the actual measurement. The The properties are therefore determined without one Intervention in the treatment of the material web.
  • the sensor is preferably designed as an optical sensor with a light source and a light receiver, the reflected light from the light source detected.
  • a sensor is primarily a gloss sensor suitable.
  • the senor with a Movement component movable parallel to the direction of the press is. This makes it possible to connect the sensor to different Place in the running direction of the material web in the calender to position.
  • a movable sensor can be designed without an air cushion. So you are no longer rely on the properties you want to determine the material web at only one position for example at the outlet. One is rather free to determine these properties in other places. This can be used to check, for example, whether a desired treatment effect on a certain position already the desired success had or not. This extends the possibilities the calender control. One can see the effect of the treatment capture the material web practically after each nip and, if appropriate control options are available are treating the web of material in everyone Targeted control of nip.
  • the sensor arrangement preferably has on both sides of the roll stack at least one parallel to Press direction movable sensor. So that's it possible to suit both sides of the material web accordingly monitor.
  • the two sensors can, but must are not moved in the same way, i.e. it is possible, a measurement at a first position with a sensor in the calender, while the sensor on the opposite Another side of the roll stack Position measures.
  • the web running path is preferably at least a nip over a guide roller and the sensor can be positioned in relation to the peripheral surface of the guide roller. This improves the measurement options.
  • On the The material web lies in the peripheral surface of the guide roller a defined position. You can at this position usually do not flutter. If the sensor opposite positioned on the peripheral surface of the guide roller then it automatically has a defined distance to the surface of the material web. This improves the Reliability of the measurement results.
  • the sensor is preferably additionally movable in such a way that that its distance from the roll stack is perpendicular to Press direction changed.
  • the Guide rollers not all in one plane parallel to the plane of the roll stack. You can have different distances from the roll stack. It is also possible to use the sensor at positions to measure that is not directly on the guide rollers are arranged. The measurement or detection options are expanded considerably.
  • the senor is opposite the peripheral surface of a roller can be positioned.
  • the Circumferential surface of the roller in the area of the sensor is not is covered by the material web.
  • the last option is in some Cases early on, when the Roller is worn out and needs to be replaced.
  • the sensor on the roller is the planning for the Maintenance of the calender simplified. After all, you can the measured values determined on the roller with those on the Material values determined correlate in order to check whether a certain influence on the material web to the extent desired. If this is not the case, then this is a sign for an error that has occurred. This mistake or this disturbance does not necessarily have to be its cause in the roller being examined. It can also be used on others Places occur.
  • the sensor is in this case just a tool to show that a Malfunction has occurred.
  • the sensor is preferably also transverse to the direction of web travel displaced. So the sensor is initially in movable in a plane parallel to the plane in which the Roll axes of the roll stack lie. If still the distance to the roll stack is variable, then the sensor in the area of the calender is more or less freely three-dimensionally movable in space.
  • a guide is arranged on which the sensor load-bearing carriage can be moved parallel to the direction of the press is.
  • This is a relatively simple construction Possibility to close the sensor parallel to the press direction move while ensuring that certain Position specifications for the sensor with a relatively large Accuracy can be maintained, for example the distance from the peripheral surface of a guide roller or a calender roll.
  • Linear drive with a direction of movement perpendicular to Press direction is arranged.
  • This linear actuator allows the sensor to be brought closer to the roll stack or to remove it further from the roll stack. This makes it possible to measure different results Positions and on different surfaces win, for example on the surface of a roller and on the surface of the material web.
  • the sensor is preferably provided with an evaluation device connected to a first storage device has, in the sensor measured values from different measuring points can be stored parallel to the direction of the press.
  • the evaluation device it is therefore possible to Material properties at different positions of the calender and thus determine whether a desired change in the material web in one expected dimensions occur or not. For example, if you the shine or smoothness after each nip can then grasp by comparing this Values in front of and behind each nip determine whether the nip actually had the desired effect or whether one or both of the rollers forming the nip are exchanged got to.
  • Other evaluation options where the property values of the material web at different Positions of the calender are also compared possible.
  • the evaluation device preferably has a second one Storage device in which sensor measured values of different measuring times can be stored.
  • the term the storage device is functional here understand.
  • the first storage device and the second Storage device can be physically in the same Component may be arranged, for example in the working memory a computer or other control device. If you make it possible to get readings recorded and saved at different measuring times, then the property values of the material web can be track over a longer period of time. So that's it possible to make a statement about the degree of wear of the calender hold true. If it turns out that the web properties deteriorate and under drop a predetermined limit, then it can be displayed be to take maintenance measures in the calender and replace one or the other roller.
  • At least one roller preferably has one Vibration sensor on that with the evaluation device is connected, wherein the evaluation device Has filter, which is a sequence of sensor measured values filters based on the signal from the vibration sensor.
  • the evaluation device has filter, which is a sequence of sensor measured values filters based on the signal from the vibration sensor.
  • the evaluation device it is not essential required that the sensor be movable. you can filter the sensor output signal based on carry out the signal of the vibration sensor, if only a fixed sensor is available is. In many cases it can be observed that in There is a fault in the sensor output signal. This disorder can have various causes. A possible cause is the vibration of a roller. A Such a vibration can possibly occur propagate the whole calender and other rollers influence. If you look at at least one roller provides a vibration sensor, then you can Detect vibration. If you look at the output signal of the sensor based on such an oscillation signal filters, it is found that part of the interference in the Sensor output signal disappears. This allows a much more accurate one with relatively little effort Measure
  • At least one nip is preferably a material web influencing device assigned and the sensor depending on its position with the Material web influencing device coupled. Also this coupling is to be understood functionally. If the Sensor is arranged behind a nip, for example, then the sensor is integrated into a control loop, with the material web influencing device or works in the nip as an actuator. You can then leave the sensor in position until have set the desired property values and are stable. Then the sensor can be moved to another position be traversed to also there when hiring of properties to help.
  • the material web influencing devices can vary greatly be trained. It can be steam or nozzle humidifiers act to tempering devices in or in front of the nip or around pressure shoes at a Deflection adjusting roll.
  • the sensor is preferably provided with a scanning device connected, which has a sampling frequency that is larger than a barring frequency.
  • the output signal of the sensor is not analog, but digitally processed. This requires a facility the sensor output signal analog / digital converts.
  • This device samples the output signal from, i.e. determines the value of the output signal to a predetermined time, and stores this value until the next predetermined time again a determination of the value of the sensor output signal is required. If you look at this sampling frequency relatively high, you are able to make changes on the material web or on the surface a roller with a relatively small wavelength to capture.
  • the task is in a method of the aforementioned Art solved in that the sensor parallel to Press direction can be moved to different measuring positions is. So you are able to control the properties the material web at different positions of the calender in the running direction of the material web. This makes it possible to develop the monitoring properties when passing through the material web to grasp through the calender.
  • At least one measuring position on the surface of the material web and at least one measuring position on the surface of a roll of the roll stack be selected. This enables you to determine not only the properties of the surface of the material web, but also the properties on the surface of a roller with the same sensor. Since the surface properties of a roller have a direct influence on the properties of the material web, it is possible in this way to detect faults at a relatively early stage, which have an effect on the properties of the material web only later.
  • the measured values of the sensor are preferably compared with one another at different measuring positions. This enables you to determine the development of the properties, such as gloss or smoothness, as they pass through the calender. The observation of such a development gives in many cases a better insight into the working of the calender than only the determination of the corresponding property after passing through the entire calender. Accordingly, the possibilities for intervention in the treatment of the material web increase.
  • a predetermined one Time a basic curve for measured values of the sensor created different measuring positions and in time the following sections the measured values of the sensor compared to the base curve.
  • the base curve then forms, for example, the smoothness values of the material web when passing through the calender behind every nip. If you now the determined measured values, you can with the Compare the measured values of the original calender arrangement and recognize relatively quickly where and how change the measured values. From the change can be then gain information where the reason for that Change is to be sought. You can get this information then use for maintenance purposes.
  • measuring positions depending on the comparison. If For example, finds that there is a measurement behind a nip worsened compared to the base curve, then it makes sense to approach the measuring position in front of the nip, to see if the deterioration from this nip or caused by another nip becomes. Accordingly, the sensor can, so to speak Back or advance to the point of failure.
  • Measurement values of the sensor are preferably compared different times with each other. This too is a way to identify faults at an early stage.
  • the temporal course of properties allows a statement about the need for maintenance in the calender make.
  • At least one movement is preferably determined. and / or force parameters on at least one roller and evaluates the measured values of the sensor taking into account of the movement and / or force parameter.
  • the measurement of gloss is the measurement of gloss to a high degree depending on the accuracy with which the sensor is compared the surface whose gloss is to be determined is. If there is an oscillation in the roller trains, then there will be a periodic approach and removal of the sensor from the roller or Roll result from the sensor, which affects the measurement result. Now if you have the information on this Has vibration, then you can use the measurement signal accordingly filter and in this way a much more precise one Get a picture of the gloss gradient.
  • the measurement values of the sensor are preferably also sensed a frequency that is greater than a barring frequency is. This makes it possible to identify barring phenomena early on to recognize who is on the surface of a Form roller or in the material web. Barring phenomena are expressed, for example, in the fact that cross stripes with different on the material web Properties. You can e.g. different Have gloss values. Corresponding properties can also be detected on the surface of a roller. However, this requires that the scanning of the corresponding measured values at such short intervals that occurs between the times surface that has been run through is shorter than half a surface Wavelength of the Barring phenomenon.
  • a calender 1 shown in FIG. 1 has a stack from several rollers 2-9, of which the upper End roller 2 and the lower end roller 9 as deflection adjustment rollers are trained. Adjacent Rolls form nips 10-16 between them, through which one Material web, in the present embodiment Paper web 17 is guided. The paper web 17 is in pressurized the nips 10-16 with increased pressure. additionally it is possible to have the paper web 17 in the nips 10-16 to also apply an elevated temperature if one of the rolls delimiting a nip 10-16 each is designed as a heated roller.
  • the paper web 17 is via an input guide roller 18 before entering the first nip 10 and via an exit guide roller 19 after leaving the last Nip 16 led. Between the first nip 10 and the last nip 16 is the paper web 17 over a number guided by guide rollers 20-25, so that the paper web 17th has contact with rollers 2-9 only in the nips, otherwise but lifted off the surface of rollers 2-9 is.
  • a gloss sensor 26 is arranged behind the last nip 16, the one on a holder 27 transverse to the web running direction, i.e. in Fig. 1 perpendicular to the plane of the drawing, movable is.
  • the gloss sensor 26 is determined by continuous Travel back and forth across the width of the paper web 17 the gloss on the surface of the paper web 17.
  • the gloss sensor 26 is arranged so that it Paper web 17 scans at a position in which it rests on the output guide roller 19.
  • the gloss sensor 26 located at the exit of the calender 1 is arranged, one can check whether the paper web 17 have been treated as a whole is, i.e. whether it has received the desired gloss. If the desired gloss is not available, is it is relatively difficult to do the necessary without much effort Information about the fault or error receive.
  • the gloss sensor 28 is arranged at the front end of a carrier 29.
  • the Carrier 29 is in the direction of a linear drive 30 a double arrow 31 movable, i.e. he can on the Roll stack of rolls 2-9 moved to or away from it become.
  • a roller plane 32 is defined.
  • the roller plane 32 is a plane in which the axes of the rollers 2-9 are arranged. Act in this roller plane 32 also the forces acting on the paper web 17, i.e. the rollers 2-9 are not shown with Averaged along the roller plane 32. Accordingly, there is a press direction 33 that is represented by a double arrow.
  • the linear drive 30 thus ensures that the gloss sensor 28 is vertical can be shifted to the roller plane 32.
  • the linear drive 30 is arranged on a slide 34, the parallel in the direction of a double arrow 35 is shiftable to the press direction 33.
  • the Carriage 34 arranged on a guide 36 which in the present case is designed as a threaded spindle.
  • the guide 36 accordingly has an external thread on that engages with an internal thread on the carriage 34 stands.
  • a corresponding one Drive for the guide 36 is in one second carriage 37 is provided, in which the guide 36 is stored with its lower end.
  • a corresponding one Carriage 38 is provided for the upper end of the guide 36.
  • the two slides 37, 38 are in turn again stored on guides 39, 40, which also can be designed as threaded spindles and drives 41, 42 have synchronized with each other are so that the carriage 34 also transversely to the web running direction shifted in the direction of a double arrow 43 can be parallel to the axes of the rollers 2-9.
  • the gloss sensor 28 in the area of the calender 1 more or less arbitrarily can be moved three-dimensionally. So he can be based on the representation of FIG. 2 upwards and move down, left, and right (Double arrows 35, 43). In addition, he can also be in Move direction of the double arrow 31 (Fig. 1), i.e. to Roller level 32 or away from it.
  • a corresponding sensor 28 ' is on the opposite Side of the roll stack 2-9 arranged. On a further explanation is omitted here. Parts to those the opposite side are here provided with deleted reference numerals.
  • the gloss sensor 28 'can be positioned that he determines the gloss of the paper web 17, if this over the guide rollers 21, 23 or 25th running.
  • the gloss sensor 28 'can also be used to the gloss of the surface of rollers 3, 5, 7 or 9 to investigate.
  • the gloss sensor 28 has a sensor housing 44 and a sensor carrier 45, which is connected via a membrane 46 are interconnected.
  • the sensor housing 44, the Sensor carrier 45 and membrane 46 enclose one Pressure chamber 47, the one not shown Line supplied with air under a predetermined pressure can be.
  • Nozzles 48 are provided on the sensor carrier 45 open to the opposite peripheral surface of the roller 4.
  • the nozzles 48 are connected to a blow chamber 49, also about not shown Means can be supplied with pressure. Generate the nozzles 48 therefore between the sensor carrier 45 and the roller 4 a compressed air cushion that is too close an approach of the sensor carrier 45 to the surface of the roller 4 prevented. If necessary, the blow chamber 49 via a Throttle (not shown in detail) with the pressure chamber 47 are connected.
  • the surface of the roller 4 is curved, this results in due to the arrangement of the nozzles 48 on both sides of The apex of the curvature is a self-aligning alignment of the sensor 28 to the surface of the roller 4. Accordingly can the sensor housing 44 with the carrier 29th via a ball joint 50 shown only schematically be connected. The orientation of the sensor carrier 45 to the surface of the roller 4 is then only limited by the corresponding positioning of the carrier 29.
  • a light source 51 for example, is on the sensor carrier 45 arranged in the form of light emitting diodes (LEDs).
  • the Light source 51 sends its light through two lenses 52, 53 and a prism 54 on the surface of the roller 4. This is represented schematically by a beam 55.
  • the beam 55 is reflected on the surface of the roller 4 and passes through a prism 56 and another Lens 57 to a detector arrangement 58, for example an arrangement of photo semiconductors.
  • the strength with which the light beam 55 reflects is a measure of the gloss of the surface of the roller 4th
  • nip In addition to examining the gloss increase from nip to One can also nip the course of the gloss over time determine over a predetermined operating period. For example is examined at predetermined intervals the gloss of the paper web 17 at the same positions. Then if you can see a decrease in gloss, this is also a sign that maintenance work on the calender are necessary. Since you take these measurements but at different measuring positions, you can also get information about where special maintenance work is required. In in most cases, the surfaces of the rollers do not wear evenly, so that one can if necessary replace only one or a few rollers and have to revise.
  • the Sensor 28 is coupled to an analog / digital converter 62, in which the analog output signal of the sensor 28 is scanned.
  • the sampling frequency is there so large that surface areas of the rollers or the Surface of the paper web 17 at relatively short intervals be scanned, i.e. the gloss information is there available at short spatial intervals. This spatial distances are so small that they are shorter than the wavelength of a Barring phenomenon, i.e. of Streaks that appear after a certain period of operation Form calenders in general.
  • the output signal of the A / D converter 62 is now in one Memory 63 stored.
  • the memory 63 has one first memory area 63a, in which the output signals stored in one position for different times become. From there you can use a shift register 64 read out and a corresponding evaluation are shown on a display 65. Instead of discrete elements shown can of course also implement another type of evaluation device, for example by using a personal computer with a central processor (CPU).
  • CPU central processor
  • a second storage area 63b stores gloss measurement values the paper web 17 which is in a predetermined Period recorded at different measuring positions have been.
  • a comparator device 66 provided the gloss levels and their increase compares the different measuring positions.
  • the output signal of the comparator device 66 can also be used to drive the position of the gloss sensor 28 with positioning information provided, for example with control signals for the drives 41, 42, 34, 30.
  • the comparator device is accordingly 66 connected to a drive control A. If, for example, it turns out that the The increase in gloss behind the third nip 12 was unsatisfactory then the gloss sensor 28 becomes the third Roll 4 move to their surface properties determine.
  • the output of the comparator 66 is also connected with a web control device B.
  • Die Web influencing device B can, for example, be a Nozzle or steam humidifier (not shown in detail) exhibit. You can use heating elements for heated rollers or it can have pressure shoes for the deflection adjusting rollers exhibit. In all cases the influencing device with the gloss sensor install in a control loop and then the influence Change until a desired gloss value is achieved has been. The setting then usually remains stable, so that the gloss sensor 28 of a new one Task, for example determining the gloss another place, can be fed.
  • the roller 4 has a Vibration sensor 68 on the vibrations of the roller in the direction of the press 33 and in the direction of the double arrow 31 determined.
  • the vibration sensor 68 is with the A / D converter 62 or another part of the evaluation device 70 coupled. It then forms with the A / D converter 62 a filter, i.e. Changes in the output signal of the sensor 28 with the help of the vibration information from the vibration sensor 68 in relation set so that interference only on the Vibrations of the roller 4 are eliminated can be.
  • rollers 2, 3 and 5-9 can of course also be used be provided with appropriate vibration sensors.

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EP20030017245 2002-08-27 2003-07-30 Calandre et procédé pour le traitement d' une bande de matériau Expired - Lifetime EP1394322B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE10239154 2002-08-27
DE2002139154 DE10239154B4 (de) 2002-08-27 2002-08-27 Kalander und Verfahren zum Kalandrieren einer Materialbahn

Publications (2)

Publication Number Publication Date
EP1394322A1 true EP1394322A1 (fr) 2004-03-03
EP1394322B1 EP1394322B1 (fr) 2007-03-14

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EP20030017245 Expired - Lifetime EP1394322B1 (fr) 2002-08-27 2003-07-30 Calandre et procédé pour le traitement d' une bande de matériau

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DE (2) DE10239154B4 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2006124665A2 (fr) * 2005-05-12 2006-11-23 Abb Ltd. Systeme de mesure permettant d'ameliorer le comportement d'un rouleau de papier

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN113930996B (zh) * 2021-10-22 2024-06-28 湖北真诚纸业有限公司 一种新型复合性压光装置

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5163365A (en) * 1989-09-06 1992-11-17 Measurex Corporation Calender system for decoupling sheet finish and caliper control
WO2002020901A1 (fr) * 2000-09-06 2002-03-14 Metso Paper, Inc. Procede et equipement de nettoyage et de support de rouleaux

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3435908A1 (de) * 1984-09-29 1986-04-10 Phoenix Ag, 2100 Hamburg Vorrichtung zum beruehrungslosen messen der dicke von materialbahnen aus polymeren werkstoffen
DE19911395A1 (de) * 1999-03-15 2000-09-21 Voith Sulzer Papiertech Patent Vorrichtung zum Bestimmen von Eigenschaften einer laufenden Materialbahn und/oder einer Maschine zu deren Herstellung und/oder Veredelung

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5163365A (en) * 1989-09-06 1992-11-17 Measurex Corporation Calender system for decoupling sheet finish and caliper control
WO2002020901A1 (fr) * 2000-09-06 2002-03-14 Metso Paper, Inc. Procede et equipement de nettoyage et de support de rouleaux

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2006124665A2 (fr) * 2005-05-12 2006-11-23 Abb Ltd. Systeme de mesure permettant d'ameliorer le comportement d'un rouleau de papier
WO2006124665A3 (fr) * 2005-05-12 2007-03-08 Abb Ltd Systeme de mesure permettant d'ameliorer le comportement d'un rouleau de papier

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DE10239154B4 (de) 2006-04-06
EP1394322B1 (fr) 2007-03-14
DE10239154A1 (de) 2004-03-18
DE50306786D1 (de) 2007-04-26

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