EP3022356B1 - Saug- oder blaswalze mit einer dichtleiste - Google Patents

Saug- oder blaswalze mit einer dichtleiste Download PDF

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Publication number
EP3022356B1
EP3022356B1 EP14723078.3A EP14723078A EP3022356B1 EP 3022356 B1 EP3022356 B1 EP 3022356B1 EP 14723078 A EP14723078 A EP 14723078A EP 3022356 B1 EP3022356 B1 EP 3022356B1
Authority
EP
European Patent Office
Prior art keywords
suction
sealing strip
roll
sealing
roll shell
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
EP14723078.3A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP3022356A1 (de
Inventor
Marc Erkelenz
Jochen Honold
Helmut BAMMER
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 EP3022356A1 publication Critical patent/EP3022356A1/de
Application granted granted Critical
Publication of EP3022356B1 publication Critical patent/EP3022356B1/de
Active legal-status Critical Current
Anticipated expiration legal-status Critical

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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
    • D21G1/002—Opening or closing mechanisms; Regulating the pressure
    • D21G1/004—Regulating the pressure
    • 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
    • D21G—CALENDERS; ACCESSORIES FOR PAPER-MAKING MACHINES
    • D21G1/00—Calenders; Smoothing apparatus
    • D21G1/02—Rolls; Their bearings

Definitions

  • the invention relates to a suction or blower roll with a sealing strip according to the preamble of claim 1.
  • Sealing strips are used for a long time in suction or blow rolls of paper, board or Tissuemaschine to seal over or under pressure against the environment by their sealing surface is made against the inside of the roll shell and upon rotation of the roll shell with the inside of the Roll shell is in frictional contact.
  • sealing strips are for example in the WO 2007/003698 or DE 10 2011 004055 described.
  • the material from which a conventional sealing strip is made is optimized to provide a high abrasion resistance, with the result that it often has a comparatively high modulus of elasticity and is often hard and brittle. Furthermore, the material thickness of the material portion of the sealing strip in the front wall is often quite low. Therefore, it may happen that the sealing strip can break off in the region of the front wall, when the material section which provides the front wall is brought into frictional contact with the roll shell inner side.
  • the object of the present invention is therefore to develop a sealing strip of the aforementioned type to the effect that it can be optimized both in terms of their abrasion resistance and in terms of a possible breakout of parts of the lubricant channel.
  • the sealing surface for sealing the overpressure or underpressure zone against the inside of the roll shell can be adjusted and lubricant can be brought into the inlet gap between the sealing surface and the inside of the roll shell by means of the lubricant channel, with the roll shell at the front end side being rotated by the roll shell runs on the sealing strip and runs off at the rear end side of this.
  • the sealing strip according to the invention is characterized in that the sealing strip comprises a first material section providing the sealing surface and a second material section providing the front wall at least in sections, wherein the first material section is made of a first material and the second material section is made of a second material and the first and second material differ in at least one physical property, such as modulus of elasticity, abrasion resistance, hardness, brittleness.
  • the solution according to the invention makes it possible to optimally adapt the sealing strip with respect to the material selection to the requirements with regard to abrasion resistance of the sealing surface and elasticity for the area of the front wall of the lubricating water channel.
  • the inventive solution does not necessarily require that the entire front wall is provided by the second material portion of the second material, but it is also conceivable that the front wall Section by another material section, for example, is also provided by the first portion of material.
  • sealing strip when used in accordance with its intended purpose, is installed with its longitudinal direction oriented in the cross-machine direction of the roll into the roll.
  • both the first material and the second material are elastic.
  • the first material providing the sealing surface should in this case be designed so elastically that the sealing surface can conform to the inside of the roll jacket in order to provide a good sealing effect.
  • On the front wall providing second material portion can act by entrained with the roll shell dirt particles. can. Since the second material section in the region of the front wall-viewed in the circumferential direction of the roll shell-has a generally much smaller wall thickness than the first material section providing the sealing surface, the second material section is subject to greater mechanical stresses than the first material section.
  • the second material should therefore preferably be sufficiently elastic that this can act on the front wall acting mechanical stresses - for example.
  • the second material has a smaller modulus of elasticity than the first material.
  • the first material at room temperature have an E-modulus of 10,000N / mm 2 or more, Furthermore, it is conceivable in this context that the second material at room temperature an E-modulus of 8000N / mm 2 or less, preferably 5000N / mm Has 2 or less.
  • the second material is less hard and / or brittle than the first material. In this way, the risk of breaking out of the front wall providing second material section can be reduced.
  • the requirement of the lowest possible coefficient of friction in the friction pairing with the material of the inside of the roll shell -in the rule steel- is provided. It is conceivable in this context in particular that the first material in the friction pairing with the material of the inside of the roll shell has a coefficient of friction of 0.15 or less. The results show that it is advantageous if the second material has a larger coefficient of friction than the first material. It is conceivable here that the second material in the friction pairing with the material of the inside of the roll mantle-as a rule steel-has a coefficient of friction of 0.18 or more.
  • the first material may be one comprising, as an essential component, a plastic-graphite mixture, in particular a rubber-graphite mixture. It is conceivable, in particular, that the first material is formed by a rubber-graphite mixture. Mixtures of 45-80 wt .-% graphite and 55-20 wt .-% plastic or rubber, where at mixing ratios with more graphite than Plastic on the one hand, a higher self-lubrication effect is achieved, but the graphite content may not be too high, otherwise the material is too brittle.
  • the second material may be one comprising, as an essential component, a plastic, in particular polyphenylene ether ( PPE ).
  • PPE polyphenylene ether
  • essential ingredient When the term “essential ingredient” is used herein, it should be understood that this ingredient constitutes the largest proportion in weight percent of the material.
  • the lubricant is preferably substantially water.
  • the term "essentially” refers to the possible possibility of adding lubricant additives to the water, with water always being the main constituent (based on volume%) of such a mixture.
  • the first material section forms a base body providing the rear wall and the sealing surface
  • the second material section forms a lip providing the front wall, wherein the lip is connected to the base body at a connection point.
  • the lip is also more elastic, in particular flexurally elastic than the main body.
  • the base body has a rear side, which provides the rear end side of the sealing strip.
  • the main body it is conceivable for the main body to have a front side with a first and a second section, wherein the first section provides a part of the lubricant channel and the second section provides the connection point at which the lip is connected to the main body.
  • the front face of the sealing strip is provided by the lip.
  • the front of the main body in addition to the first and second portion has a third portion which provides a part of the front end side of the sealing strip.
  • a part of the front end side of the sealing strip is provided by the base body and another part of the front end side of the sealing strip by the lip. Since in sealing strips, the two end faces often serve as guide surfaces of the sealing strip in the sealing strip holder, which define the direction of movement of the sealing strip when they are attached to the inside of the roll shell, it is particularly useful if formed on the front end of the transition between the lip and the base flat is, ie for example, does not form a stage or a paragraph.
  • the lip can be connected to the main body. According to one possibility, it is conceivable that the lip is releasably connected to the base body, in particular non-positively and / or positively connected to the base body. Conceivable here are in particular screw or joint connections. Through a detachable connection, it is possible without much effort to replace a damaged lip with a new lip.
  • first and the second material differ from one another in terms of thermal length expansions, it may be that, viewed in the longitudinal direction of the sealing strip, the lip and the base body extend differently from one another.
  • a preferred embodiment of the invention therefore provides that the lip and the base body are connected to one another in a movable manner relative to one another in the longitudinal direction of the sealing strip , Concretely, this can be provided, for example, by a positive connection between the lip and the base body be, for example, in the form of a dovetail joint, which allows a relative movement of the lip and body in the longitudinal direction of the sealing strip. It should be noted at this point that the above-mentioned relative mobility is not only conceivable in connection with different thermal linear expansions of lip and base body.
  • the lip arranged on the main body is inextricably linked, in particular materially bonded, to the main body.
  • a connection that is particularly easy to manufacture and therefore inexpensive to produce in the production of the sealing strip is provided. It is conceivable, for example, an adhesive bond.
  • the sealing strip comprises stiffening ribs against which the lip is supported during rotational movement of the roll shell. It is conceivable in this context in particular that the stiffening ribs are arranged on the lip. Alternatively or additionally, it is conceivable that the stiffening ribs are arranged on the rear wall.
  • the lip is formed such that this under normal use inclined and / or curved to the radial direction of the roll shell, wherein the inclination and / or curvature is directed in the direction of movement of the roller.
  • the lip is designed in such a way that, when used as intended, it is essentially in the radial direction of the Roll mantle runs. Such a lip is particularly simple and therefore inexpensive to produce.
  • the sealing surface viewed in the circumferential direction of the roll shell has an extension of 15 millimeters - 70 millimeters, in particular 15 millimeters - 50 millimeters.
  • the lip seen in the circumferential direction of the roll shell has a wall thickness of 0.5 millimeters - 6 millimeters.
  • the lip is designed such that when properly using the sealing strip in the state by the sealing surface is employed against the inside of the roll shell, the upper edge lip against the Inside the roll shell is employed -th during rotation of the roll shell with the inside in frictional contact is or spaced at most 10 millimeters, preferably at most 4 millimeters to the inside of the roll shell.
  • the lip In the salaried then acts the lip in the manner of a "sealing lip” or a “wiper blade” and seals the lubricant channel from the front, so that the lubricant either remains in the lubrication channel or is drawn into the inlet gap of sealing surface and roll shell inside, but only slightly different can escape from the lubricant channel. Furthermore, the fact that the lip is turned on the roller shell inside only after a certain period of operation, eg. In the course of wear of the sealing surface, occur and does not necessarily have to be the case already at the beginning of the operating time of the sealing strip.
  • the lubricant channel extends from the bottom inclined to the sealing surface, the inclination is directed towards the rear end of the sealing strip, in particular with a horizontal angle between 20 ° and 70 °, in particular between 30 ° and 50 °.
  • the lubricant along the oblique plane formed by the rear wall can be transported particularly easily into the inlet gap between the sealing surface and the roll shell inner side.
  • This effect is particularly pronounced when the lubricant channel is filled to or almost to the inside of the roll shell with the lubricant, and is thereby entrained by the inside of the roll shell.
  • a preferred embodiment of the invention provides that the lubricant groove extends over the greater part of the length of the sealing strip.
  • the sealing strip comprises a guided inside the sealing lubricant distribution with a extending in the longitudinal direction of the sealing strip Schmierstoffzu Switzerlandkanal and one or a plurality of riser (s), the one end with the lubricant groove and the other end with the lubricant supply channel is connected or are, in the case of several risers these are arranged side by side in the longitudinal direction of the lubricant channel.
  • the lubricant channel can be connected to a lubricant supply line guided outside the sealing strip.
  • the sealing strip according to the invention can be used in any kind of suction or blower rolls for web material processing and / or manufacturing machines, especially paper, board or tissue machines at different positions.
  • the sealing strip according to the invention can be used in positions in which the lubricant channel is not “upside down” with the opening facing downwards is arranged, since with a "upside down” orientation of the lubricant channel, the function of the lubricant channel comes less to bear, since it can serve less than reservoir for the lubricant in this case than when the opening of the channel is directed upward.
  • An aspect of the invention based on this finding therefore proposes a suction or blower roll with a sealing device for sealing an overpressure or underpressure zone of the suction or blower roll with at least one sealing strip, in which the sealing strip in the suction or blower roll is viewed in one plane defined by the rotational movement of the roll mantle is installed in a 7 o'clock to 12 o'clock position when the rotational direction of the roll mantle is in the clockwise direction and in a 5 o'clock to 12 o'clock position when the rotational direction of rotation of the roll mantle is counterclockwise.
  • the generic sealing strips have a longitudinal direction, which extends under the intended use of the sealing strips in the cross-machine direction of the roller in which they are installed.
  • the in the Figures 1-4 shown sealing strips 1, 1a, 1b, 1c are shown in a cross-sectional plane which is perpendicular to the longitudinal direction of the sealing strips 1, 1a, 1b, 1c clamped.
  • the rotational direction of movement of the roll mantle also extends in the aforementioned cross-sectional plane.
  • FIG. 1 shows a sealing strip 1 when used as intended in a-not further shown- sealing device of a suction roll of a web material processing and / or manufacturing machine.
  • the sealing strip 1 has a front end face 14 and a rear end face 15 and an upper face 19 extending between the two end faces 14, 15 which provides a sealing surface 2 and a lubricant groove 5 formed by a cutout of the sealing strip 1. As from the representation of FIG. 1 can be seen, the lubricant groove 5 between the front end face 14 and the sealing surface 2 is arranged. Next is from the FIG.
  • a lubricant-present in Shape of water in the inlet gap 8 between the sealing surface 2 and the inside 3 of the roll shell 4 can be brought.
  • the roll mantle 4 runs on the front face 14 on the sealing strip 1 and on the rear face 15 of this again on.
  • the lubricant channel 5 is arranged in front of the sealing surface 2 and the front wall 6 in front of the rear wall 7.
  • the sealing strip 1 also has a guided within the sealing strip 1 Schmierffenverteilsystem with extending in the longitudinal direction of the sealing strip 1 Schmierffenzu Switzerlandkanal 9 and a plurality of risers 10 (of which in the illustration of FIG. 1 only one can be seen).
  • the risers 10 are connected at one end to the lubricant channel 5 and the other end to the lubricant supply channel 9 and arranged in the longitudinal direction of the lubricant channel 5 side by side.
  • the in the FIG. 1 shown sealing strip 1 is formed by a base body 11 forming a first material portion of a first material and a bending elastic lip 12 forming the second material portion of a second material.
  • the lip 12 provides the front wall 6.
  • the first and the second material differ in the present case, at least in the physical properties modulus of elasticity, abrasion resistance and friction coefficient of each other.
  • the first material essentially comprises a rubber-graphite mixture and has a graphite content of 60% by weight and a rubber content of 35% by weight, and further constituents.
  • the second material comprises as essential ingredient polyphenylene ether ( PPE ) .
  • the first material has an E-modulus of approx. 14000 N / mm 2 and the second material has an E-modulus of approx. 2400N / mm 2 . Therefore, the second material has a smaller modulus of elasticity than the first material.
  • first material and the second material are matched to one another in such a way that in a friction pairing with the material of the inner side 3 of the roll shell 4 -this steel is in the case of sliding friction a smaller coefficient of friction - namely 0.125- as the second material-namely 0.2 - Has.
  • the lip 12 is designed so that when used properly the sealing strip 1 in the state by the sealing surface 2 is employed against the inside 3 of the roll shell 4, the upper edge 13 lip 12 against the inside 3 of the roll shell 4 and employed with this is in frictional contact. Furthermore, the lip 12 extends curved in the direction of movement D of the roll shell 4 viewed. This can be caused by the lip 12 is already made curved or by the lip without self-curvature due to the friction with the roll shell inner side 3 undergoes this curving force. In the latter case, the lip in the present case is made so that the upper edge 13 in the state in which the sealing surface 2 is not employed against the roll shell inner side 3 protrudes in height above the sealing surface 2.
  • the lip can be detachably connected to the base body 11 at a connection point 20, for example, in a force-locking manner in the form of a screw connection.
  • the main body 11 further forms the rear end face 15 of the sealing strip 1.
  • the base body 11 has a front side which has a first section 21, a second section and a third section 22, the first section providing a part of the lubricant channel 5, the second section providing the connection point 20 on which the lip 12 is connected to the main body 11 is connected and the third portion 22 provides a portion of the front end face 14 of the sealing strip 1.
  • the front end face 14 of the sealing strip 1 is provided by the lip 12 and the third section 22 of the front side of the main body 11. Furthermore, it can be seen that at the front end face 14, the transition between the lip 12 and the base body 11 is flat, i. E. for example, does not form a stage or a paragraph.
  • the lubricant channel 5 extends inclined from the bottom to the sealing surface, wherein the inclination with a horizontal angle between 20 ° and 70 ° includes. Furthermore, extends to all in the Figures 1-4 and 5 shown sealing strips 1, 1a, 1b, the lubricant channel 5 over most of the length of the respective sealing strip 1, 1a, 1b, 1c.
  • sealing strip 1a comprises a plurality of longitudinally of the sealing strip juxtaposed stiffening ribs 16 against which the lip 12a is supported during rotational movement D of the roll shell 4 by the lip 12 is pressed with the stiffening ribs 16 against the rear wall 7.
  • the stiffening ribs 16 are arranged on the lip 12a.
  • the lip 12a is designed such that this is used when the sealing strip 1a is used as intended in that the sealing surface 2 against the inner side 3 of the roll shell 4, the upper edge 13 lip 12a to the inside 3 of the roll shell 4, wherein the distance here is 2-4 millimeters. Further, the lip 12a extends inclined in the direction of movement D of the roll shell 4, wherein the lip 12a is already made inclined.
  • sealing strip 1a is also to be seen that at the front end face 14 of the transition between the lip 12a and the base body 11 is formed by a paragraph.
  • sealing strip 1b differs from that of FIG. 2 merely in that the front end face 14 is completely provided by the lip 12b '. As a result, a flat front end side 14 is also provided.
  • FIG. 4 shows a further inventive sealing strip 1c in a direction perpendicular to the longitudinal direction of the cross-sectional plane. Unlike in the FIGS. 1 to 3 shown sealing strips 1, 1a and 1b, the lip 12c in the FIG. 4 Sealing strip 1c shown formed such that it extends when used properly in the radial direction of the roll shell 4 substantially.
  • the FIG. 4 shows the sealing strip 1c but not installed, ie without roll shell.
  • the base body 11 has a rear side, which provides the rear end face 15 of the sealing strip 1c. Furthermore, the main body 11 has a front side with a first portion 21, a second portion and a third portion 22, wherein the first portion 21 a part of the lubricant groove 5, the second portion, the junction of the main body 11 with the lip 12c and the third portion 22 provides a part of the front end face 14 of the sealing strip 1c.
  • the front face 14 of the sealing strip in sections by the lip 12c and partially formed by the base body 11, wherein at the front end 14 of the transition between the lip 12c and the base 11 is flat, ie formed without step or step.
  • sealing strip 1c is formed only by the main body 11.
  • the in the FIG. 4 shown sealing strip 1c is present only formed from the main body 11 and the lip 12c, wherein which is formed by the groove bottom to the sealing surface 2 extending portion of the lubricant channel 5 through the first portion 21 of the base body 11 and inclined as an inclined plane at an angle of about 40 ° -50 ° to the horizontal.
  • connection point 20 forms a dovetail connection, which permits relative movability of the lip 12c and base body 11 in the longitudinal direction of the sealing strip 1c, ie when used in the cross-machine direction of the roller as intended, but a relative mobility in other directions than the aforementioned essentially or completely prevented.
  • This embodiment is particularly useful if the lip 12c and the base body 11 in the longitudinal direction of the sealing strip 1c have a mutually different thermal expansion.
  • FIG. 5 shows the lip 12a or 12b in a perspective view with the plurality of longitudinally of the lip 12a, 12b juxtaposed stiffening ribs 16th
  • FIG. 6 shows a suction roll according to the invention 18 for a web material processing and / or manufacturing machine, in particular paper, board or Tissuemaschine, in a cross-sectional plane perpendicular to the longitudinal direction of the suction roller 18. It should be noted that the longitudinal direction of the sealing strip 1 or 1a or 1b or 1c and the suction roll 18 coincide.
  • the suction roll 18 has at least one sealing device 17 for sealing a vacuum zone V of the suction roll 18 with respect to the surroundings U.
  • the sealing device 17 comprises at least one sealing strip 1, 1a, 1b or 1c-present two sealing strips according to the invention.
  • the two sealing strips 1, 1a or 1b are according to the invention in the suction roller 18 in the cross-sectional plane or in a plane defined by the rotational movement D of the roll shell 4 plane in a 7 o'clock to 12 o'clock position in clockwise rotation and in a 5 o'clock to 12 Clock position built in counterclockwise rotation.
  • the rotation D of the roll mantle is in a clockwise direction and the two sealing strips 1, 1a, 1b or 1c are installed in the roll 18 in a 10 o'clock position.
  • the two sealing strips 1, 1a, 1b or 1c are installed as intended in the roller 18, ie viewed in the rotational movement direction D of the roll shell 4, the lubricant groove 5 is arranged in front of the sealing surface 2 and the front wall 6 in front of the rear wall 7.

Landscapes

  • Sealing With Elastic Sealing Lips (AREA)
  • Paper (AREA)
EP14723078.3A 2013-07-19 2014-05-12 Saug- oder blaswalze mit einer dichtleiste Active EP3022356B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102013214177 2013-07-19
PCT/EP2014/059591 WO2015007414A1 (de) 2013-07-19 2014-05-12 Dichtleiste für papier-, karton- oder tissuemaschine aus mehreren werkstoffen

Publications (2)

Publication Number Publication Date
EP3022356A1 EP3022356A1 (de) 2016-05-25
EP3022356B1 true EP3022356B1 (de) 2018-10-03

Family

ID=50687497

Family Applications (1)

Application Number Title Priority Date Filing Date
EP14723078.3A Active EP3022356B1 (de) 2013-07-19 2014-05-12 Saug- oder blaswalze mit einer dichtleiste

Country Status (4)

Country Link
US (1) US9708768B2 (zh)
EP (1) EP3022356B1 (zh)
CN (1) CN105392941B (zh)
WO (1) WO2015007414A1 (zh)

Cited By (1)

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Publication number Priority date Publication date Assignee Title
US11377796B2 (en) 2018-06-11 2022-07-05 Voith Patent Gmbh Sealing strip for sealing a positive or negative pressure zone of a roller, roller with such a sealing strip, and method for operating the roller

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Publication number Priority date Publication date Assignee Title
AT516191B1 (de) * 2014-09-15 2016-08-15 Röchling Leripa Papertech Gmbh & Co Kg Dichtleistensysteme für Saugwalzen
US9879377B2 (en) 2015-04-10 2018-01-30 Coldwater Seals, Inc. Adjustable foil apparatus for paper making machine
US9834887B2 (en) 2015-04-10 2017-12-05 Coldwater Seals, Inc. Adjustable foil apparatus for paper making machine
DE102018113831A1 (de) * 2018-06-11 2019-12-12 Voith Patent Gmbh Walze für eine Maschine zur Herstellung und/oder Verarbeitung einer Papier-, Karton- oder Tissuebahn
JP7016100B2 (ja) * 2020-02-04 2022-02-04 株式会社長谷川鉄工所 サクションロールにおけるシール装置
FI20225943A1 (fi) * 2022-10-19 2024-04-20 Valmet Technologies Oy Imutela ja imutelan tiivistejärjestely

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US4714523A (en) * 1986-12-18 1987-12-22 Sawyer Jr William D Suction roll seal strips with teflon insert
FI99035C (fi) * 1995-11-03 1997-09-25 Valmet Corp Paperikoneen imutelan tiivisterakenne
US6241854B1 (en) * 1997-05-15 2001-06-05 Appleton International, Inc. Suction roll sealing strip
US6395137B1 (en) * 1997-10-22 2002-05-28 Valmet Corporation Seal construction for a suction box in a suction roll in a paper/board machine
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DE19842838A1 (de) * 1998-09-18 2000-03-23 Voith Sulzer Papiertech Patent Dichtungseinrichtung und Verfahren zur Abdichtung von Druckzonen in einer Papiermaschine
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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US11377796B2 (en) 2018-06-11 2022-07-05 Voith Patent Gmbh Sealing strip for sealing a positive or negative pressure zone of a roller, roller with such a sealing strip, and method for operating the roller

Also Published As

Publication number Publication date
US9708768B2 (en) 2017-07-18
US20160153141A1 (en) 2016-06-02
CN105392941A (zh) 2016-03-09
EP3022356A1 (de) 2016-05-25
WO2015007414A1 (de) 2015-01-22
CN105392941B (zh) 2017-08-22

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