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EP3802951B1 - Rouleau pour machine de fabrication et/ou de traitement d'une bande de papier, de carton ou de tissu, et procédé d'utilisation du rouleau - Google Patents

Rouleau pour machine de fabrication et/ou de traitement d'une bande de papier, de carton ou de tissu, et procédé d'utilisation du rouleau Download PDF

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Publication number
EP3802951B1
EP3802951B1 EP19728963.0A EP19728963A EP3802951B1 EP 3802951 B1 EP3802951 B1 EP 3802951B1 EP 19728963 A EP19728963 A EP 19728963A EP 3802951 B1 EP3802951 B1 EP 3802951B1
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EP
European Patent Office
Prior art keywords
roll
lubricant
less
sealing strip
roller
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.)
Active
Application number
EP19728963.0A
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German (de)
English (en)
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EP3802951C0 (fr
EP3802951A1 (fr
Inventor
Marc Erkelenz
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
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Publication of EP3802951A1 publication Critical patent/EP3802951A1/fr
Application granted granted Critical
Publication of EP3802951C0 publication Critical patent/EP3802951C0/fr
Publication of EP3802951B1 publication Critical patent/EP3802951B1/fr
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Classifications

    • D—TEXTILES; PAPER
    • D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
    • D21F—PAPER-MAKING MACHINES; METHODS OF PRODUCING PAPER THEREON
    • D21F3/00—Press section of machines for making continuous webs of paper
    • D21F3/02—Wet presses
    • D21F3/10—Suction rolls, e.g. couch rolls
    • 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

Definitions

  • the invention relates to a roller for a machine for producing or processing a fibrous web according to the preamble of claim 1, as well as a method for operating such a roller.
  • Sealing devices in vacuumed or blown rollers for paper, cardboard or tissue machines must reliably seal the overpressure or underpressure zone against the environment in which normal pressure prevails.
  • the sealing surface of each sealing strip of the sealing device is placed against the inside of the rotating roller shell.
  • attempts are made to introduce a lubricant between the sealing surface and the inside This is usually done with spray pipes that are arranged in front of the first sealing strip of the overpressure or underpressure zone in the direction of rotation of the roller.
  • the lubricant is applied to the inside of the roller shell and transported by the shell to the individual sealing strips as it rotates, which means that the lubricant supply from sealing strip to sealing strip decreases in the direction of rotation.
  • a large amount of lubricant must be used, which, however, only benefits the actual lubrication of the sealing strips to a small extent and otherwise contributes to the undesirable re-moistening of the fibrous web.
  • EP2885457 as well as the EP3022356 to direct the lubricant directly to the top of the respective sealing strip, which provides the sealing surface, in order to provide each individual sealing strip with the required
  • a preferred embodiment of this invention further proposes a lubricant channel provided on the top of the roller in the form of a groove-like depression arranged next to the sealing surface and extending in the longitudinal direction of the sealing strip, ie in the cross-machine direction of the roller, if necessary with the aid of a suitable lip.
  • EP2885457 discloses a roller according to the preamble of claim 1.
  • an object of the invention to propose a roller with a sealing device in which a uniform supply of lubricant to the sealing strip is ensured. Furthermore, an object of the invention is to provide a reliable method for operating such a roller using a small amount of lubricant.
  • the object is completely achieved with regard to the roller by a roller for a machine for producing or processing a fibrous web according to claim 1 and with regard to the method by a method for operating a roller according to claim 14.
  • a roller for a machine for producing or processing a fibrous web, which comprises a movable roller shell and an overpressure or underpressure zone arranged within the roller shell and which is rotationally fixed compared to the roller shell, as well as a sealing device for sealing the overpressure or underpressure zone from the environment.
  • the sealing device has a sealing strip and a lubricating device by means of which a lubricant can be brought between the inside of the roller shell and the sealing surface of the sealing strip, wherein the lubricating device comprises a plurality of lubricant outlet openings and is connected via several inlet segments to a supply line for supplying lubricant.
  • the roller is characterized in that the supply line comprises an inner section which runs within the roller shell and this inner section has a storage volume of at least 490 cm 3 /m, in particular at least 500 cm 3 /m, in particular of at least 750 cm 3 /m or 1000 cm 3 /m, based on the length of the sealing strip.
  • An inlet segment is understood to be a line section that is connected to the supply line that supplies the entire lubrication system and directs lubricant to some of the lubricant outlet openings.
  • the size of the storage volume should be at least 490 cm 3 /m, in particular at least 500 cm 3 /m.
  • the value of 490 cm 3 /m or 500 cm 3 /m is sufficient for the lubricant quantities normally used of 0.5 l/m/min to approx. 3 l/m/min.
  • Larger storage volumes of 1000 cm 3 /m, 2000 cm 3 /m or more are advantageous for reasons of evening out the pressure as described above. Due to the relatively tight installation space in some rollers or for economic reasons, it may be sensible to limit the size of the storage volume upwards. For example, it may be advantageous not to provide a storage volume larger than 20,000 cm 3 /m or 10,000 cm 3 /m.
  • the storage volume in "cm 3 /m” refers to the length of the lubricated sealing strip.
  • the roller can advantageously be designed as a suction roller.
  • the roller shell has openings that are usually arranged in a regular pattern. In this way, water can be sucked out of a fibrous web or a covering through the openings in the roller shell using the negative pressure prevailing in the negative pressure zone.
  • the inner section comprises or consists of a tubular part which extends essentially over the entire length of the sealing strip, wherein this tube has an inner diameter of 25 mm or more, in particular more than 40 mm, preferably 50 mm or more, at least at one point.
  • this tube has an inner diameter of 25 mm or more, in particular more than 40 mm, preferably 50 mm or more, at least at one point.
  • the pipe has a constant cross-section over more than 50% of its length, in particular over its entire length.
  • a pipe that has an inner diameter of 25mm over its entire length, for example, provides approx.
  • the pipe tapers continuously over its length.
  • Such an embodiment can be advantageous in particular for long sealing strips of more than 5m, or more than 10m, in order to keep the pressure at the inlet segments located at the back in the direction of flow of the lubricant even more constant.
  • the majority of the lubricant outlet openings are evenly distributed over the length of the sealing strip, in particular that the distances between adjacent lubricant outlet openings differ by less than 25% or less than 10%.
  • such a distribution of the lubricant outlet openings also supports the even distribution of the lubricant over the entire length of the sealing strip.
  • the distance between two adjacent lubricant outlet openings can be between 20 mm and 200 mm, in particular between 30 mm and 100 mm. In particularly preferred embodiments, the distance between adjacent lubricant outlet openings is between 40 mm and 60 mm.
  • the lubrication device can be implemented, for example, by guiding the lubricant from the inlet segments to nozzle devices, e.g. fan nozzles, which represent the lubricant outlet openings.
  • the lubricant is lubricated via the nozzles in the direction of the sealing surface to be lubricated.
  • nozzle devices are known as lubrication spray pipes and are usually arranged in front of the sealing strip in the direction of rotation of the roller.
  • the lubricating device can also be advantageous for the lubricating device to be provided entirely or partially in or on the sealing strip, with the lubricant outlet openings in particular being located in the sealing strip.
  • Such sealing strips with an integrated lubricating device are often preferred because the sealing surface can be lubricated with a smaller amount of lubricant.
  • the inner section is at least partially rigid.
  • the term "rigid" is to be understood in comparison to the inlet segments. Inlet segments are often made entirely or at least partially from plastic hoses. This is particularly useful for sealing strips with an integrated lubrication device, since the inlet segment has to move with the movement of the strip caused by wear.
  • the inner section of the supply line is at least partially made from a rigid material, e.g. in the form of a metal pipe or a plastic pipe.
  • Sealing devices often have a so-called holder for holding the sealing strip.
  • the inner section runs at least partially on or in this holder.
  • all inlet segments have the same length or differ in length by less than 25%. If the lengths of the inlet segments differ too much, there may be a risk that the effect of equalizing the pressure achieved by the invention cannot be fully passed on to the lubricant outlet openings.
  • the length of the inlet segments can be between 150 mm and 700 mm, in particular between 200 mm and 400 mm.
  • a very advantageous design is when the inner section of the supply line is mounted on the outside of the suction box of a negative pressure zone. On the one hand, this mounting position is easier to access than inside the suction box. On the other hand, the distance from the inner section of the supply line to the inlets of the sealing strip is usually smaller, so that shorter inlet segments with a length of, for example, 150mm-250mm can be used.
  • the distance of an inlet segment to a longitudinal end of the sealing strip can preferably be a maximum of 800 mm, in particular a maximum of 600 mm, preferably 400 mm or less.
  • the inlet segments are arranged such that their distance from one another in the longitudinal direction of the roller is less than 2 m, in particular less than 1.75 m, preferably 1.5 m or less.
  • the inlet segments can also be arranged such that the distance between adjacent inlet segments in the longitudinal direction of the roller is the same or differs by only less than 15%, in particular less than 5%.
  • the supply line also has an outer section which runs essentially outside the roller, wherein the outer section with an inner diameter of 25 mm or less, in particular 20 mm or less or 15 mm or less, is guided over an end face into the interior of the roller, where it is connected to the inner section.
  • the outer section can have a smaller inner diameter than the inner section, in particular also at the connection point of the two sections.
  • the object is achieved by a method for operating a roller for a machine for producing or processing a fibrous web, wherein the roller is designed according to one of the previous claims, characterized in that the lubricating device is supplied with less than 2.4 l/min/m, in particular between 0.4 l/min/m and 1.5 l/min/m of lubricant. With such an amount of lubricant, the roller proves to be particularly advantageous according to one of the above-mentioned aspects.
  • the lubricating device is supplied with a first amount of lubricant over a starting period, and after this starting period the lubricating device is supplied with a second amount of lubricant, wherein the first amount of lubricant is greater, in particular more than 25% greater, than the second amount of lubricant - in each case based on l/min/m.
  • the lubrication device can be supplied with 2.4 l/min/m or more of lubricant, and after this start-up period the lubricant quantity is reduced to less than 2.4 l/min/m, in particular between 0.4 l/min/m and 1.5 l/min/m.
  • Such a start period can, for example, be at least 30 s, in particular between 30 s and 5 min.
  • Such a start period which precedes standard operation, can ensure, among other things, that the storage volume is completely filled with lubricant and thus the roller or the lubricating device can develop its full effect.
  • Water can usually be used as a lubricant, to which additives can be added if necessary.
  • the pressure in the supply line can be, for example, between 2 and 8 bar, in particular 4 bar to 6 bar.
  • a sealing device for sealing an overpressure or underpressure zone of a roller for a machine for producing or processing a fibrous web
  • the sealing device has a sealing strip and a lubricating device by means of which, when used as intended, a lubricant can be brought between the inside of the roller shell and the sealing surface of the sealing strip
  • the lubricating device comprises a plurality of lubricant outlet openings and can be connected to a supply line for supplying lubricant.
  • the sealing device is characterized in that the lubricating device can be connected to the supply line via several inlets which are distributed over the length of the sealing strip, the sealing strip has a first and a second longitudinal end and the distance from at least one, preferably both longitudinal ends to an inlet is a maximum of 800 mm, in particular a maximum of 600 mm, preferably 400 mm or less.
  • such a sealing device can be used in combination with a supply line which has a storage volume of at least 490 cm 3 /m, in particular at least 500 cm 3 /m.
  • the inlet segments explained above can be connected to the inlets of the sealing device described here.
  • Such a sealing device can be particularly advantageous for supplying the edges of the sealing strip with sufficient and even lubricant. Over most of the length of the sealing strip, every point can be supplied with lubricant from both the right and the left, since there is at least one inlet on both sides through which lubricant is supplied to the lubricating device. In the edge areas of the sealing strip beyond the first or last inlet, however, the problem arises that these areas are only supplied with lubricant from one side, since there is only an inlet on one side. This can lead to the region of the longitudinal ends of the sealing strip not being be supplied with sufficient lubricant, especially with less lubricant than the middle area of the sealing strip.
  • the inlets are arranged such that their distance from one another in the longitudinal direction of the roller is less than 2 m, in particular less than 1.75 m, preferably 1.5 m or less.
  • the inlets can also be arranged such that the distance between adjacent inlets in the longitudinal direction of the roller is the same or differs by only less than 15%, in particular less than 5%.
  • the lubricating device can be provided entirely or partially in or on the sealing strip, wherein in particular the lubricant outlet openings can be in the sealing strip.
  • FIG. 1 shows a roller 1 with a roller shell 11 and a front side 12.
  • a roller can be, for example, a suction roller 1.
  • a sealing device 2 is provided inside the roller 1.
  • This comprises a sealing strip 3 which is arranged in a sealing strip holder 3a, as well as a lubricating device 4.
  • the lubricating device 4 shown is located largely in the sealing strip 3.
  • a plurality of lubricant outlet openings 5 are arranged next to one another. These openings 5 are positioned such that escaping lubricant gets between the sealing surface of the sealing strip 3 and the roller shell 11.
  • To supply the lubricating device 4 with lubricant e.g.
  • a supply line 6 which comprises an inner section 7 which runs inside the roller shell 11 and has a storage volume of at least 490 cm 3 /m , in particular at least 500 cm 3 /m , preferably of at least 2000 cm 3 /m , based on the length of the sealing strip, as well as an outer section 8.
  • the lubricating device 4 is connected to the inner section 7 of the supply line 6 at a plurality of inlets 10, 10a via a plurality of inlet segments 9, 9a.
  • the distances between two adjacent inlet segments 9, 9a and/or two adjacent inlets 10, 10a can each be the same.
  • the inlet segments 9, 9a are arranged such that their distance from one another in the longitudinal direction of the roller 1 is less than 2m, in particular less than 1.75m, preferably 1.5m or less.
  • the distance of an inlet segment 9a or an inlet 10a to a longitudinal end of the sealing strip 3 can preferably be a maximum of 800mm, in particular a maximum of 600mm, preferably 400mm or less.
  • the length of the inlet segments can advantageously be between 150mm and 700mm, in particular between 200mm and 400mm.
  • a very advantageous design is when the inner section 7 is mounted on the outside of the suction box of a negative pressure zone. On the one hand, this mounting position is easier to access than inside the suction box.
  • the distance from the inner section 7 of the supply line to the inlets 10, 10a of the sealing strip is usually smaller, so that shorter inlet segments 9, 9a with a length of, for example, 150mm-250mm can be used.
  • the inner section 7 of the supply line consists of Figure 1 from a tubular part.
  • This pipe is advantageously made of a material (e.g. metal or plastic) that is more rigid than the inlet segments 9, 9a.
  • a material e.g. metal or plastic
  • pipes with inner diameters of 25mm corresponds to a storage volume of approx. 500 cm 3 /m
  • 40mm or 50mm corresponds to a storage volume of approx. 2000 cm 3 /m
  • the inlet segments 9, 9a can be designed as hose segments, for example.
  • Figure 2 differs from Figure 1 in that the inner section 7 consists of a tube 7 which tapers continuously over its length.
  • Figure 3 shows a sealing strip 3 in a holder 3a, which is pressed against the inside of the roller shell 11 of the roller 1 by means of a pressure hose 13.
  • a pressure hose for pressing against a moving surface such as a roller shell
  • the lubricating device 4 is not integrated in the sealing strip. Lubrication is achieved by means of a number of spray nozzles, which provide the outlet openings 5. The spray nozzles are connected to the inner section 7 of the supply line via inlet segments 9.
  • Figure 3 is implemented together with the spray nozzles, but is also possible in combination with a lubricating device 4 integrated in the sealing strip 3, consists in that the inner section 7 of the supply line runs at least partially on or in the sealing strip holder 3a.
  • This inner section 7 provides the storage volume of at least 490 cm 3 /m, in particular at least 500 cm 3 /m, and can, for example, have the shape of a cylinder or a tapering cylinder.
  • FIG. 4 essential components of the invention are shown schematically once again.
  • the lubricant outlet openings 5 are supplied with lubricant via inlets 10, 10a.
  • the inlets 10, 10a are connected to the inner section 7 of the supply line via inlet segments 9, 9a.
  • the inner section 7 is again designed as a pipe, which also provides the storage volume.
  • the distances from the long end of the sealing strip 3 to the first inlet 10a, or to the first inlet segment 9a, are designated d1 and d5, respectively, while the distances between adjacent inlets 10, 10a or adjacent inlet segments 9, 9a are designated d2, d3, d4.
  • the number of 4 inlets is exemplary. More or fewer inlets/inlet segments may well be provided.
  • the 'inner' distances d2-d4 can be the same or differ by a few millimetres. This can be due to the installation situation, for example.

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  • Paper (AREA)
  • Rolls And Other Rotary Bodies (AREA)
  • Coating Apparatus (AREA)

Claims (15)

  1. Cylindre (1) destiné à une machine de fabrication ou de traitement d'une bande de matière fibreuse, comprenant un bandage de cylindre (11) mobile et une zone de surpression ou de dépression disposée à l'intérieur du bandage de cylindre (11) et solidaire en rotation en comparaison avec le bandage de cylindre, ainsi qu'un dispositif d'étanchéité (2) pour rendre la zone de surpression ou de dépression étanche par rapport à l'environnement, dans lequel le dispositif d'étanchéité (2) présente une baguette d'étanchéité (3) ainsi qu'un dispositif de lubrification (4) au moyen duquel un lubrifiant peut être amené entre la face intérieure du bandage de cylindre (11) et la surface d'étanchéité de la baguette d'étanchéité (3), dans lequel le dispositif de lubrification (4) comprend une pluralité d'orifices de sortie de lubrifiant (5) et est relié par plusieurs segments d'entrée (9, 9a) à une conduite d'alimentation (6) pour l'alimentation en lubrifiant, dans lequel la conduite d'alimentation (6) comprend une section intérieure (7) qui s'étend à l'intérieur du bandage de cylindre (11),
    caractérisé en ce que cette section intérieure (7) présente un volume de stockage d'au moins 490 cm3/m, en particulier d'au moins 2000 cm3/m par rapport à la longueur de la baguette d'étanchéité (3).
  2. Cylindre (1) selon la revendication 1, caractérisé en ce que la section intérieure (7) comprend une partie tubulaire ou est composée de celle-ci, qui s'étend substantiellement sur toute la longueur de la baguette d'étanchéité (3), dans lequel ce tube présente à au moins un endroit un diamètre intérieur de 25 mm ou plus, en particulier de plus 40 mm, de préférence de 50 mm ou plus.
  3. Cylindre (1) selon la revendication 2, caractérisé en ce que le tube présente sur plus de 50 % de sa longueur, en particulier sur toute sa longueur, une section transversale constante.
  4. Cylindre (1) selon la revendication 2, caractérisé en ce que le tube s'amincit en continu sur toute sa longueur.
  5. Cylindre (1) selon l'une quelconque des revendications précédentes, caractérisé en ce que la pluralité des orifices de sortie de lubrifiant est répartie régulièrement sur la longueur de la baguette d'étanchéité, en particulier en ce que les intervalles d'orifices de sortie de lubrifiant adjacents diffèrent de moins de 25 %.
  6. Cylindre (1) selon l'une quelconque des revendications précédentes, caractérisé en ce que le dispositif de lubrification (4) est prévu entièrement ou partiellement dans ou sur la baguette d'étanchéité (3), dans lequel en particulier les orifices de sortie de lubrifiant (5) peuvent se trouver dans la baguette d'étanchéité (3).
  7. Cylindre (1) selon l'une quelconque des revendications précédentes, caractérisé en ce que la section intérieure (7) est réalisée au moins partiellement de manière plus rigide que les segments d'entrée (9, 9a).
  8. Cylindre (1) selon l'une quelconque des revendications précédentes, caractérisé en ce que le dispositif d'étanchéité (2) comprend un support (3a) pour recevoir la baguette d'étanchéité (3), et la section intérieure (7) s'étend au moins en partie sur ou dans ce support (3a).
  9. Cylindre (1) selon l'une quelconque des revendications précédentes, caractérisé en ce que tous les segments d'entrée (9, 9a) présentent la même longueur ou diffèrent en longueur de moins de 25 %.
  10. Cylindre (1) selon l'une quelconque des revendications précédentes, caractérisé en ce que la longueur des segments d'entrée (9, 9a) mesure entre 150 mm et 700 mm, en particulier entre 200 mm et 400 mm.
  11. Cylindre (1) selon l'une quelconque des revendications précédentes, caractérisé en ce que la conduite d'alimentation (6) présente de plus une section extérieure (8) qui s'étend substantiellement à l'extérieur du cylindre (1), dans lequel la section extérieure (8) avec un diamètre intérieur de 25 mm ou moins, en particulier de 20 mm ou moins, ou de 15 mm ou moins, est amenée par une face frontale (12) à l'intérieur du cylindre (1) où elle est reliée à la section intérieure (7).
  12. Cylindre (1) selon l'une quelconque des revendications précédentes, caractérisé en ce que les segments d'entrée (9, 9a) sont disposés de telle sorte que la distance de segments d'entrée adjacents (9, 9a) les uns par rapport aux autres dans la direction longitudinale du cylindre (1) est identique ou ne diffère que de moins de 15 %, en particulier de moins 5 %.
  13. Cylindre (1) selon l'une quelconque des revendications précédentes, caractérisé en ce que les segments d'entrée (9, 9a) sont disposés de telle sorte que leur distance les uns par rapport aux autres dans la direction longitudinale du cylindre (1) mesure moins de 2 m, en particulier moins de 1,75 m, de préférence 1,5 m ou moins.
  14. Procédé permettant de faire fonctionner un cylindre (1) pour une machine de fabrication ou de traitement d'une bande de matière fibreuse, dans lequel le cylindre (1) est réalisé selon l'une quelconque des revendications précédentes, dans lequel le dispositif de lubrification est alimenté avec moins de 2,4 l/min/m, en particulier entre 0,4 l/min/m et 1,5 l/min/m de lubrifiant.
  15. Procédé selon la revendication 14, dans lequel pendant une période de démarrage, le dispositif de lubrification (4) est alimenté avec une première quantité de lubrifiant, et après cette période de démarrage, le dispositif de lubrification (4) est alimenté avec une deuxième quantité de lubrifiant, la première quantité de lubrifiant étant supérieure, en particulier supérieure de plus de 25 %, à la deuxième quantité de lubrifiant.
EP19728963.0A 2018-06-11 2019-06-05 Rouleau pour machine de fabrication et/ou de traitement d'une bande de papier, de carton ou de tissu, et procédé d'utilisation du rouleau Active EP3802951B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102018113831.8A DE102018113831A1 (de) 2018-06-11 2018-06-11 Walze für eine Maschine zur Herstellung und/oder Verarbeitung einer Papier-, Karton- oder Tissuebahn
PCT/EP2019/064595 WO2019238484A1 (fr) 2018-06-11 2019-06-05 Rouleau pour machine de fabrication et/ou de traitement d'une bande de papier, de carton ou de tissu, et procédé d'utilisation du rouleau

Publications (3)

Publication Number Publication Date
EP3802951A1 EP3802951A1 (fr) 2021-04-14
EP3802951C0 EP3802951C0 (fr) 2024-10-30
EP3802951B1 true EP3802951B1 (fr) 2024-10-30

Family

ID=66776340

Family Applications (1)

Application Number Title Priority Date Filing Date
EP19728963.0A Active EP3802951B1 (fr) 2018-06-11 2019-06-05 Rouleau pour machine de fabrication et/ou de traitement d'une bande de papier, de carton ou de tissu, et procédé d'utilisation du rouleau

Country Status (5)

Country Link
US (1) US20210254283A1 (fr)
EP (1) EP3802951B1 (fr)
CN (1) CN112313377B (fr)
DE (1) DE102018113831A1 (fr)
WO (1) WO2019238484A1 (fr)

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102012213544A1 (de) * 2012-08-01 2014-02-06 Voith Patent Gmbh Dichtleistensystem
US20150191872A1 (en) * 2012-08-15 2015-07-09 Voith Patent Gmbh Sealing strip
US9650743B2 (en) * 2012-08-15 2017-05-16 Voith Patent Gmbh Sealing device, suction roll and method for producing and/or processing a paper, cardboard or tissue web
US9506191B2 (en) * 2012-08-15 2016-11-29 Voith Patent Gmbh Suction roll for a machine for producing and/or processing a paper, cardboard or tissue web
WO2015007414A1 (fr) * 2013-07-19 2015-01-22 Voith Patent Gmbh Baguette d'étanchéité constituée de plusieurs matières et destinée à machine à papier, carton ou tissu

Also Published As

Publication number Publication date
EP3802951C0 (fr) 2024-10-30
CN112313377B (zh) 2022-12-09
US20210254283A1 (en) 2021-08-19
EP3802951A1 (fr) 2021-04-14
WO2019238484A1 (fr) 2019-12-19
DE102018113831A1 (de) 2019-12-12
CN112313377A (zh) 2021-02-02

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