EP2319787B1 - Procédé et appareil pour contrôler le découpage longitudinal d'un matériau en bande - Google Patents

Procédé et appareil pour contrôler le découpage longitudinal d'un matériau en bande Download PDF

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Publication number
EP2319787B1
EP2319787B1 EP10188060A EP10188060A EP2319787B1 EP 2319787 B1 EP2319787 B1 EP 2319787B1 EP 10188060 A EP10188060 A EP 10188060A EP 10188060 A EP10188060 A EP 10188060A EP 2319787 B1 EP2319787 B1 EP 2319787B1
Authority
EP
European Patent Office
Prior art keywords
partial
web
fixed point
monitoring area
winder
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.)
Not-in-force
Application number
EP10188060A
Other languages
German (de)
English (en)
Other versions
EP2319787A2 (fr
EP2319787A3 (fr
Inventor
Timo Virtanen
Kenneth Akerlund
Jaakko Haapanen
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.)
Valmet Technologies Oy
Original Assignee
Metso Paper Oy
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 Metso Paper Oy filed Critical Metso Paper Oy
Publication of EP2319787A2 publication Critical patent/EP2319787A2/fr
Publication of EP2319787A3 publication Critical patent/EP2319787A3/fr
Application granted granted Critical
Publication of EP2319787B1 publication Critical patent/EP2319787B1/fr
Not-in-force legal-status Critical Current
Anticipated expiration legal-status Critical

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H26/00—Warning or safety devices, e.g. automatic fault detectors, stop-motions, for web-advancing mechanisms
    • B65H26/02—Warning or safety devices, e.g. automatic fault detectors, stop-motions, for web-advancing mechanisms responsive to presence of irregularities in running webs
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H2301/00—Handling processes for sheets or webs
    • B65H2301/40—Type of handling process
    • B65H2301/41—Winding, unwinding
    • B65H2301/414—Winding
    • B65H2301/4148—Winding slitting
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H2511/00—Dimensions; Position; Numbers; Identification; Occurrences
    • B65H2511/10—Size; Dimensions
    • B65H2511/14—Diameter, e.g. of roll or package
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H2511/00—Dimensions; Position; Numbers; Identification; Occurrences
    • B65H2511/20—Location in space
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H2553/00—Sensing or detecting means
    • B65H2553/40—Sensing or detecting means using optical, e.g. photographic, elements
    • B65H2553/42—Cameras

Definitions

  • the invention relates to a method for controlling the slitting of a web-like material according to the preamble of claim 1.
  • the invention relates to an apparatus for controlling the slitting of a web-like material according to the preamble of claim 6.
  • a material web coming from a material web machine such as a paper machine, is wound with a wind-up into large machine reels possibly even having the width of over 10 m and the diameter of over 4 m.
  • the material web is slit into narrower partial webs and wound into smaller so-called customer reels on the slitter-winder.
  • these partial webs can break before the reel and thread around e.g. a carrier roll supporting the reels from below. It is also possible that the web can thread around e.g. a rider roll of a slitter-winder of the carrier-roll type or fall freely to the basement.
  • the specification depicts the automatic control of reeling such that the reeling is monitored by a monitoring device which is a line camera and/or a digital camera and/or a video camera and/or a line laser and/or one or more distance-measuring lasers and/or a computer vision apparatus which detect electromagnetic radiation occurring on the visible or invisible wavelength, which monitoring device automatically detects any events deviating from the normal reeling: interferences in the shape of an airbag, extra objects appearing near the reeling nip, such as loose pieces of paper, or a double web edge or a web drifting into a wrong place or piling up of the web or a web split in the machine direction.
  • a further document describing a method and apparatus for the reeling control of a web is EP 1 084 976 A2 .
  • the objects of the invention are provided with the method for controlling the slitting of a web-like material on the slitter-winder, in which method, the web is slit into several partial webs which are wound into partial web reels such that the slitting is monitored in connection with a moving and/or stationary part of the slitter-winder, and the travel of the web on the slitter-winder is monitored with a monitoring device which automatically detects events deviating from the normal winding such that an image is created of a monitoring area being monitored and, triggered by a fault detected in the image, measures are taken to eliminate the fault or to minimise its effects.
  • the invention is characterised by that, in the method, in connection with the moving part of the slitter-winder, determining a fixed point for the monitoring area and, simultaneously as an image is created of the monitoring area substantially continuously, determining the position of the fixed point and, if the position of the fixed point changes more than pre-determined, re-determining the position of the monitoring area such that the monitoring area is located in a new place determined by the changed position of the fixed point and/or, in the method, in connection with the stationary part of the slitter-winder, separating at least one partial area of the image being created of the monitoring area which is monitored with criteria specific to it.
  • the operational reliability of the partial web winding section is better than previously, inter alia, due to the quicker detection of a fault.
  • At least one partial area is separated of the monitoring area in which said fixed point is arranged, and the position of the fixed point being in the partial area is determined such that, if the position changes more than pre-determined, the position of the partial area is re-determined such that the partial area is located in a new place determined by the changed position of the fixed point.
  • At least two partial areas are separated of the monitoring area for which are determined criteria of faults differing from each other in order to take measurements.
  • the fixed point of the monitoring area is arranged during winding depending on the diameter of the partial web reels to the moving part of the partial web winder and, simultaneously as an image is created of the monitoring area substantially continuously to monitor the moving part, the position of the fixed point is determined and, if the position of the fixed point changes more than pre-determined, the position of the monitoring area is re-determined such that the monitoring area is located in a new place determined by the changed position of the fixed point of the moving part.
  • said moving part supports partial web reels being wound during winding.
  • the objects of the invention are also provided with an apparatus for controlling the slitting of a web-like material, which comprises an unwinder, a slitting section and a winding section, the partial-web winder of which comprises a movable support element, such as a rider roll or a carrier roll, supporting the partial web reels as the winding process proceeds, and a monitoring device which automatically detects any events deviating from the normal winding such that an image is created of the monitoring area being monitored and, triggered by a fault detected in the image, measures are taken to eliminate the fault or to minimise its effects.
  • the invention is characterised by the support element of the partial web winder comprising a fixed point and by having arranged the monitoring area to observe the fixed point during winding.
  • the fixed point advantageously consists of an image part or point determined for the monitoring device.
  • the monitoring device comprises camera devices which are arranged in the cross-direction outside a path w' of partial webs w.
  • Fig. 1 schematically shows an embodiment of a partial web winder 10 of a fibrous web according to the invention.
  • the partial-web winder is here the so-called carrier-roll winder 10, but it is evident that the invention can be applied in connection with partial web winders of other types.
  • Fig. 2 shows a view of the carrier-roll winder of Fig. 1 from direction II-II and, in the following, reference is made to both Fig. 1 and Fig. 2 .
  • the carrier-roll winder 10 comprises two support elements 12.1, 12.2, i.e. carrier rolls or equivalents, arranged to support web reels 14 being wound from below and at least one loading device 12.3 to support the reels 14 substantially from above.
  • the loading device is advantageously a roll. Slit partial webs w are arranged to travel onto the first support element 12.1 and to transfer from its surface into partial web reels via a nip formed by the first carrier roll 12.1 and each web reel in a way known as such.
  • the partial-web winder is provided with a monitoring device 100 by means of which the ongoing winding process of partial webs w is monitored.
  • the monitoring device 100 comprises camera devices 102.1, 102.2.
  • the camera devices are arranged in the cross-direction outside a path w' of partial webs w and, simultaneously, also at a distance from the plane of the path of the web w.
  • a monitoring area 104 of the camera devices extends at least on the path of the web travelling onto the first carrier roll 12.1 and onto an uncovered surface of the first carrier roll preceding a contact line of the web travelling onto the carrier roll and the carrier roll.
  • the monitoring area 104 comprises partial areas 104.1, 104.2.
  • the first 104.1 and the second partial area 104.2 are under the simultaneous observation of the monitoring device.
  • the monitoring device simultaneously monitors the travel of each partial web onto the first carrier roll 12.1 and the surface of the first carrier roll at the point preceding the contact line of each partial web. This is enabled by the above positioning of the camera devices at a distance from the plane of the web and in the cross-direction outside the path w' of the partial webs w.
  • the monitoring device 100 is the so-called computer vision apparatus which, by continuously analysing the monitoring area, distinguishes such faults/features which require measures.
  • the monitoring areas 104 of the camera devices 102.1, 102.2 extend at least partially on top of each other, whereby at least partially even a three-dimensional model can be formed of the area being monitored.
  • the slit web is brought onto the first carrier roll 12.1 of the partial web winder 10 of the winding section of the slitter-winder and each partial web is controlled from the carrier roll into each partial web reel being formed on the partial web winder 10.
  • the camera devices 102.1, 102.2 belonging to the monitoring device 100 of the partial web winder create substantially continuously an image of the bringing of the web onto the first carrier roll 12.1 such that the whole set of partial webs w is simultaneously shot by at least two different camera devices 102.1, 102.2.
  • the shooting is performed such that the monitoring area 104 is formed of both sides of the set of partial webs directed towards the partial web winder extending over the whole set of the partial webs.
  • the monitoring area can be formed suitable such that even two camera devices can arrange the monitoring of the operation of even a wide partial web set and, thus, of the winding section.
  • the monitoring device comprises a data processing unit 108 or it is connected to a data processing unit.
  • the created image is continuously monitored.
  • the data processing unit 108 has been taught to detect features in a real-time image which indicate a fault and/or problem situation or the creation of such on the partial web winder. This way is very reliable e.g. against changes occurring in lighting. It is also possible to exclude other disturbing factors, such as paper shred, a foreign object etc., and to separate them from an actual web break better than just e.g. by comparing the current image with an image saved in an earlier situation.
  • the monitoring area 104 is thus practically analysed in real-time. In a situation in which a feature caused by a fault is detected in the real-time image, the data processing unit gives an instruction and/or a signal based on which measures are taken to eliminate the fault or to minimise its effects.
  • An image created according to another embodiment of the invention is continuously monitored such that at least one image of the image created of the monitoring area corresponding to normal operation has been saved in the data processing unit.
  • the data processing unit compares the real-time image with the saved image corresponding to the normal operation. In a situation in which a difference greater than pre-determined caused by a fault is detected between the real-time image and the saved image, the data processing unit gives an instruction and/or a signal based on which measures are taken to eliminate the fault or to minimise its effects.
  • At least two partial areas 104.1, 104.2 are separated from the image created from the monitoring area 104.
  • the data processing unit 108 includes their own criteria saved for both separate partial areas, specific of them of such features in the image which indicate a fault and/or a problem situation or the creation of such on the partial web winder.
  • at least one image corresponding to normal operation can be saved created from a partial image created of said at least two partial areas 104.1,104.2, i.e. an operation situation.
  • the data processing unit gives an instruction and/or a signal based on which measures are taken to eliminate the fault or to minimise its effects.
  • fault criteria differing from each other have been determined for the partial areas 104.1 and 104.2, creating an image of the monitoring area enables the simultaneous monitoring of the occurrence of several different disturbance factors.
  • the data processing unit compares the real-time image with said saved image. In a situation in which a difference greater than pre-determined is detected between the real-time image and the saved image, the data processing unit gives an instruction and/or a signal based on which measures are taken to eliminate the fault or to minimise its effects.
  • the data processing unit 108 detects a difference greater than predetermined between the real-time image and the saved image only in the first partial area 104.1.
  • the first measure is taken.
  • the second measure is taken.
  • the third measure is taken.
  • the situation is normal i.e. no partial web is threaded around the carrier roll, the partial web has broken before the winding section 10 and, thus, the above first measure is the measure to correct this situation.
  • the situation is normal i.e. the partial webs travel onto the first carrier roll 12.1, but detecting on the surface of the first carrier roll preceding the contact line of the partial web travelling onto the carrier roll and the carrier roll (second partial area) an exceptional situation of the threading of a partial web around the carrier roll, the partial web has broken on the winding section and, thus, the above second measure is the measure to correct this situation.
  • Yet as another example can be considered a situation in which e.g. detecting on the path of the web travelling onto the first carrier roll 12.1 (first partial area 104.1) an exceptional situation of the missing of a partial web from the path, and detecting on the surface of the first carrier roll preceding the contact line of the partial web travelling onto the carrier roll and the carrier roll (second partial area) an exceptional situation of the threading of another partial web on the carrier roll, the first partial web has broken before the winding section 10 and the second partial web has broken on the winding section and, thus, the above third measure is the measure to correct this situation. It is evident that the first, second and third measure can be the same measure.
  • this measure is to end the coming of the web from the unwinder by stopping the unwinder and/or by cutting the web being unwound controllably.
  • the image can be created in the range of visible wavelength or e.g. in the IR range or both of these.
  • Fig. 3 shows an embodiment of the invention in which the monitoring device is arranged by way of an example into connection with the rider roll 12.3.
  • the monitoring area 104 extends on the length of the rider roll over the width of the set of partial webs for detecting a fault situation.
  • a typical fault situation on the rider roll can be e.g. the winding of a broken partial web around the rider roll 12.3.
  • the monitoring area 104 is arranged changing of its position as the winding process proceeds.
  • a fixed point is chosen in the monitoring area or one is arranged there which distinguishes from the created image clearly enough in order to determine it as a fixed point 110 to be monitored.
  • a fixed point is chosen in the monitoring area or one is arranged there which distinguishes from the created image clearly enough in order to determine it as a fixed point 110 to be monitored.
  • the beam of the rider roll is advantageously provided with an identification pattern 110 by means of which the rider roll is detected in the image.
  • the image area being monitored is searched by means of co-ordinates attached in this identification pattern 110.
  • the position of the fixed point is determined. If the position changes more than pre-determined, the position of the monitoring area is re-determined such that the monitoring area 104 is located in a new place determined by the changed position of the fixed point. Thus, the monitoring area 104 is made to observe the rider roll 12.3 as the winding proceeds.
  • a partial area 104.3 of the monitoring area 104 is arranged changing of its position as the winding process proceeds. This is advantageous if the actual monitoring area is particularly large.
  • a fixed point is chosen in the partial area of the monitoring area which distinguishes from the created image clearly enough in order to determine it as a fixed point 110 to be monitored.
  • the beam of the rider roll is advantageously provided with the identification pattern 110 by means of which the rider roll is detected in the image.
  • the partial area being monitored is searched by means of co-ordinates attached in this identification pattern 110.
  • the same monitoring area can also include several partial areas separately changing of their positions. It is evident that the changing of the monitoring area according to the invention can also be arranged into connection with some other moving part of the partial web winder than the rider roll, such as into connection with a movable carrier roll.
  • the position of the fixed point in the partial area is determined. If the position changes more than pre-determined, the position of the partial area 104.3 is re-determined such that both the monitoring area 104 and the partial area 104.3 are located in a new place determined by the changed position of the fixed point. Thus, the monitoring area 104 is made to observe the rider roll 12.3 as the winding proceeds.
  • the monitoring device 100 comprises the camera devices 102.1, 102.2 which are advantageously arranged in the cross-direction outside the path w' of the partial webs w.
  • the winding section of the slitter-winder is provided with a monitoring device according to the invention which is connected to the control apparatus of the slitter-winder such that, due to an exceptional situation detected by the monitoring device, it is possible to react to the operation of the slitter-winder without delay.
  • a partial web break can be detected almost in real-time.
  • it is e.g. possible to distinguish a partial web threaded around the carrier roll or the rider roll from other faults.
  • Such other faults are, inter alia, changes in lighting conditions, web shreds drifting in the image area or e.g. a foreign object falling in the image area.
  • the invention can be applied such that the slitting is simultaneously monitored in connection with a moving and/or stationary slitter-winder part of the slitter-winder. Then in the method, in connection with the moving part of the slitter-winder, a fixed point 110 is determined for the monitoring area and, simultaneously when creating an image of the monitoring area 104 substantially continuously, the position of the fixed point 110 is determined and, if the position of the fixed point changes more than pre-determined, the position of the monitoring area is re-determined such that the monitoring area 104 is located in a new place determined by the changed position of the fixed point and/or, in the method, in connection with the stationary part of the slitter-winder, at least one partial area 104.3 of the image being created of the monitoring area 104 is separated which is monitored with criteria specific to it.

Landscapes

  • Controlling Rewinding, Feeding, Winding, Or Abnormalities Of Webs (AREA)
  • Registering, Tensioning, Guiding Webs, And Rollers Therefor (AREA)

Claims (8)

  1. Procédé permettant de commander le découpage d'un matériau en forme de bande sur une coupeuse-bobineuse, dans ce procédé, la bande est découpée en plusieurs bandes partielles (w) qui sont enroulées en rouleaux de bandes partielles (14) de sorte que le découpage soit surveillé en relation avec une partie mobile et/ou stationnaire de la coupeuse-bobineuse, et le déplacement de la bande sur la coupeuse-bobineuse est surveillé avec un dispositif de surveillance (100) qui détecte automatiquement des événements qui diffèrent du bobinage normal de sorte qu'une image d'une zone de surveillance (104) qui est surveillée soit créée et, déclenchée par un défaut détecté dans l'image, des mesures sont prises pour éliminer le défaut ou pour minimiser ses effets, caractérisé par, dans le procédé, la détermination d'un point fixe (110) dans la zone de surveillance en relation avec la partie mobile de la coupeuse-bobineuse et, simultanément, lorsqu'une image de la zone de surveillance (104) qui est surveillée est créée de façon sensiblement continue, la détermination de la position du point fixe (110) et, si la position du point fixe change de manière plus importante que prévue, la détermination de nouveau de la position de la zone de surveillance de sorte que la zone de surveillance (104) soit située dans un nouvel endroit déterminé par la position changée du point fixe et/ou, dans le procédé, la séparation, à partir de l'image créée de la zone de surveillance (104) en relation avec la partie stationnaire de la coupeuse-bobineuse, d'au moins une zone partielle (104,3) qui est surveillée par des critères spécifiques à celle-ci.
  2. Procédé selon la revendication 1, caractérisé par la séparation, à partir de la zone de surveillance (104), d'au moins une zone partielle (104,3) dans laquelle ledit point fixe (110) est agencé, et par la détermination de la position du point fixe dans la zone partielle de sorte que, si la position change de manière plus importante que prévue, la détermination de nouveau de la position de la zone partielle (104,3) de sorte que la zone partielle (104,3) soit située dans un nouvel endroit déterminé par la position changée du point fixe.
  3. Procédé selon la revendication 1 ou 2, caractérisé par la séparation, à partir de la zone de surveillance (104) d'au moins deux zones partielles (104,1 ; 104,2), pour lesquelles des critères d'un défaut différents entre eux sont déterminés pour prendre des mesures.
  4. Procédé selon l'une quelconque des revendications précédentes, caractérisé par l'agencement du point fixe (110) de la zone de surveillance lors du bobinage en fonction du diamètre des rouleaux de bandes partielles à la partie mobile de la bobineuse de bandes partielles et, simultanément qu'une image de la zone de surveillance (104) est créée de manière sensiblement continue pour surveiller la partie mobile, la détermination de la position du point fixe (110) et, si la position du point fixe change de manière plus importante que prévue, la détermination de nouveau de la position de la zone de surveillance de sorte que la zone de surveillance (104) soit située dans un nouvel endroit déterminé par la position changée du point fixe de la partie mobile.
  5. Procédé selon la revendication 4, caractérisé en ce que ladite partie mobile supportant des rouleaux de bandes partielles est enroulée.
  6. Appareil permettant de commander le découpage d'un matériau en forme de bande, qui comprend une rebobineuse, une section de découpage et une section de bobinage, dont la bobineuse de bandes partielles comprend un élément de support mobile, tel qu'un rouleau chargeur ou un galet de support, de supporter les rouleaux de bandes partielles lorsque le processus de bobinage avance, et un dispositif de surveillance (100) qui détecte automatiquement des événements qui diffèrent du bobinage normal de sorte qu'une image de la zone de surveillance (104) qui est surveillée soit créée et, déclenchée par un défaut détecté dans l'image, des mesures sont prises pour éliminer le défaut ou pour minimiser ses effets, caractérisé en ce que l'élément de support de la bobineuse de bandes partielles comprend un point fixe (110) et que la zone de surveillance (104) est agencée pour observer le point fixe durant le bobinage.
  7. Bobineuse de bandes partielles selon la revendication 6, caractérisée en ce que le point fixe (110) se compose d'un point ou d'une partie d'image déterminé pour le dispositif de surveillance (100).
  8. Bobineuse de bandes partielles selon la revendication 6 ou 7, caractérisée en ce que le dispositif de surveillance (100) comprend des dispositifs de caméra (102,1 ; 102,2) qui sont agencés dans la direction transversale à l'extérieur d'un trajet w' de bandes partielles w.
EP10188060A 2009-11-05 2010-10-19 Procédé et appareil pour contrôler le découpage longitudinal d'un matériau en bande Not-in-force EP2319787B1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FI20096142A FI122537B (fi) 2009-11-05 2009-11-05 Menetelmä ja laitteisto rainamaisen materiaalin pituusleikkauksen ohjaamiseksi

Publications (3)

Publication Number Publication Date
EP2319787A2 EP2319787A2 (fr) 2011-05-11
EP2319787A3 EP2319787A3 (fr) 2011-10-12
EP2319787B1 true EP2319787B1 (fr) 2013-02-13

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EP10188060A Not-in-force EP2319787B1 (fr) 2009-11-05 2010-10-19 Procédé et appareil pour contrôler le découpage longitudinal d'un matériau en bande

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FI (1) FI122537B (fr)

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Publication number Priority date Publication date Assignee Title
DE102013107760A1 (de) * 2013-07-19 2015-01-22 PSA Technology S.à.r.l. Anlage und Verfahren zum Herstellen von Rollen aus bahnförmigen Material
JP7481018B2 (ja) * 2018-10-16 2024-05-10 イタリア テクノロジー アライアンス ソチエタ レスポンサビリタ リミタータ 処理されるウェブ材料の評価システムを備えた巻取り装置及び方法
IT201800009482A1 (it) * 2018-10-16 2020-04-16 Italia Tech Alliance Srl Macchina di avvolgimento con dispositivi per il calcolo del coefficiente di poisson e metodo
DE102019120122A1 (de) * 2019-07-25 2021-01-28 Saint-Gobain Isover G+H Ag Verfahren zum Aufwickeln einer Materialbahn, insbesondere aus einem kompressiblen, zusammenpressbaren Material sowie Vorrichtung zum Durchführen des Verfahrens

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Publication number Priority date Publication date Assignee Title
DE19944958C2 (de) * 1999-09-20 2002-02-07 Voith Paper Patent Gmbh Leit- oder Kontaktwalzenanordnung zum Handhaben einer Materialbahn, insbesondere in einer Rollenwickelvorrichtung
DE20211013U1 (de) * 2002-07-20 2002-10-10 Voith Paper Patent GmbH, 89522 Heidenheim Rollenwicklerwalze
FI117171B (fi) * 2004-04-07 2006-07-14 Metso Paper Inc Menetelmä ja laitteisto rullauksen hallitsemiseksi
DE102004000034A1 (de) * 2004-10-26 2006-04-27 Voith Paper Patent Gmbh Separiervorrichtung

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Publication number Publication date
FI122537B (fi) 2012-03-15
EP2319787A2 (fr) 2011-05-11
FI20096142A (fi) 2011-05-06
EP2319787A3 (fr) 2011-10-12
FI20096142A0 (fi) 2009-11-05

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