EP0168718B2 - Entwässerungsband für Pressen in der Nasspartie einer Papiermaschine - Google Patents

Entwässerungsband für Pressen in der Nasspartie einer Papiermaschine Download PDF

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Publication number
EP0168718B2
EP0168718B2 EP85108267A EP85108267A EP0168718B2 EP 0168718 B2 EP0168718 B2 EP 0168718B2 EP 85108267 A EP85108267 A EP 85108267A EP 85108267 A EP85108267 A EP 85108267A EP 0168718 B2 EP0168718 B2 EP 0168718B2
Authority
EP
European Patent Office
Prior art keywords
layer
drainage
strip
threads
upper layer
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.)
Expired - Lifetime
Application number
EP85108267A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP0168718B1 (de
EP0168718A2 (de
EP0168718A3 (en
Inventor
Franz-Ferdinand Dipl.-Kfm. Kufferath
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.)
KUFFERATH, FRANZ. F., DIPL.-KFM.
Original Assignee
Individual
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
Family has litigation
First worldwide family litigation filed litigation Critical https://patents.darts-ip.com/?family=6240818&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=EP0168718(B2) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Application filed by Individual filed Critical Individual
Priority to AT85108267T priority Critical patent/ATE53870T1/de
Publication of EP0168718A2 publication Critical patent/EP0168718A2/de
Publication of EP0168718A3 publication Critical patent/EP0168718A3/de
Publication of EP0168718B1 publication Critical patent/EP0168718B1/de
Application granted granted Critical
Publication of EP0168718B2 publication Critical patent/EP0168718B2/de
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
    • D21F—PAPER-MAKING MACHINES; METHODS OF PRODUCING PAPER THEREON
    • D21F1/00—Wet end of machines for making continuous webs of paper
    • D21F1/0027—Screen-cloths
    • D21F1/0036—Multi-layer screen-cloths
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S162/00—Paper making and fiber liberation
    • Y10S162/90—Papermaking press felts

Definitions

  • the invention relates to a dewatering belt for presses in the wet press section of a paper machine with a support belt in the form of a screen fabric and an upper layer lying on the side of the support belt facing the paper web in the form of an additional, finer screen fabric which forms drainage channels together with the support belt the upper side of the top layer which lies against the paper web extends to the underside of the support belt facing away from the paper web, the open volume of the drainage belt being selected such that the water absorption capacity is at least equal to the amount of water to be absorbed in the press nip.
  • Such a drainage belt is known from US-A-3 214 326.
  • the drainage belts generally used for presses in the wet press section of a paper machine are referred to as felts, although they have only one layer of felt on the side of a screen fabric facing the paper web. It is known (EP-A-0 089 032) to design this screen fabric in multiple layers, for example to provide a coarse, single-layer screen fabric on the running side facing away from the paper web, on which lies a much finer, double-layer screen fabric which carries the felt layer. In addition to its function as a carrying belt, the screen fabric also has the task of absorbing the water squeezed out of the paper web in the press nip and contributing to an even pressure load on the paper web in the press nip.
  • the felt layer has the task of preventing markings on the paper web and, above all in the manner of a non-return valve, preventing the entry of the material, despite the cranking of the weft threads, which protrude beyond the area defined by the warp threads on the side of the double-layer screen fabric facing the paper web to allow the paper web to squeeze out water into the screen fabric, but to prevent this water from being sucked up again by the paper web as soon as it leaves the press nip.
  • the barrier layer is either generated by roughening the screen fabric forming the base layer, which has a cavity volume sufficient to accommodate the water squeezed out of the paper web and whose threads consist of textured yarn, staple yarn or a yarn made of multifilament or textured monofilament threads, or of a fine sieve fabric is formed on the side facing the paper web, which is connected to the base fabric by means of warp threads.
  • This fine screen fabric consists of multifilament threads.
  • this fine fabric In order to be able to fulfill the barrier function, this fine fabric must have a different permeability to water, depending on whether the water squeezed out of the paper web in the nip should pass through and be absorbed by the base layer or a backflow into the paper web when it emerges from the nip should be prevented as much as possible.
  • Such different permeability requires a considerable deformability of the screen fabric forming the barrier layer and the drainage channels formed by it.
  • the high pressure prevailing in the nip also leads to a deformation of the barrier layer in the sense of a reduction in permeability, to which the multifilament threads also contribute.
  • a reduced permeability in the nip and an increasing permeability when leaving the nip of the embodiment with a barrier layer consisting of a fine screen fabric therefore lead to a lower dewatering performance of such a dewatering belt compared to the conventional felts.
  • Another known drainage belt for use instead of the known press felts in the wet presses of the press section of a paper machine consists of a 2-ply support belt, on the side facing the paper web, a 1-ply screen fabric made of multifilaments and monofilament threads and because of the very fine threads and a dense weave has a very smooth surface.
  • This drainage belt is compressible because it tends to expand rapidly as it exits a press nip. The negative pressure generated by this expansion is said to increase the drainage capacity.
  • this drainage belt is also not superior to the known press felts.
  • the invention has for its object to provide a dewatering belt for presses in the wet end of a paper machine, which makes it possible to increase the dewatering performance of a wet press. This problem is solved by a drainage belt with the features of claim 1.
  • Such a drainage belt in the press nip does not lose its openness under the pressure prevailing here, nor does it lose its open volume in which the top layer is involved.
  • the flow resistance that the top layer is made of opposed to the paper web squeezed out in the nip is therefore much smaller than with the known felts and the known dewatering belt. For this reason, the pressure in the nip can be reduced, which leads to cheaper presses.
  • the ability to retain the absorbed water is greater, corresponding to a funnel that opens towards the underside of the support belt, and thus the rewetting of the paper web is lower than in the known solutions. It can therefore also be prevented that a critical hydraulic pressure leading to the destruction of the paper web can build up in the press nip.
  • the stored water can easily be removed again by centrifugal force when deflecting around a roller or by suction.
  • top layer lies directly on the paper web, thanks to the monoplan design of the top layer the latter is not marked.
  • a monoplan design is understood here to mean that on the side carrying the paper web, the offsets of the threads of one thread system define the same area as the threads of the other thread system, which runs transverse to the threads forming the offsets, so that the offsets do not form any protruding elevations .
  • the dewatering belt according to the invention contributes to an improvement in sheet formation as it passes through the wet press section, that is to say after the paper web has left the forming area in the wire section.
  • the uniform dewatering performance over the entire bandwidth prevents fluctuations in the basis weight of the paper web.
  • the printability of the paper web is evened out, that is to say the properties of the two sides of the paper web that are essential for the printability are brought closer to one another.
  • the support band and / or the top layer are constructed in multiple layers.
  • the permeability can be adapted even better to the requirements than with a single-layer Training of the top layer and the support band.
  • its transverse threads lie exactly above one another, in the case of a multi-layer design of the support band, its transverse threads.
  • top layer with the support band is possible in various ways.
  • the top layer and the support band are preferably woven together.
  • the dewatering belt is made up of four cross-thread layers arranged one above the other, of which the uppermost cross-thread layer coming into contact with the paper web is 1, the cross-thread layer directly below this is 2, the cross-thread layer below the latter layer is 3 and the the bottom transverse thread layer forming the running side of the drainage belt is designated by 4.
  • the uppermost cross thread layer has 28 cross threads per cm with a diameter of 0.15 mm.
  • the uppermost transverse thread layer 1 and the underlying transverse thread layer 2, which can also be referred to as the first intermediate layer, are connected to each other by a first longitudinal thread system 5, which consists of 72 longitudinal threads with a diameter of 0.15 mm.
  • the course of the threads of this first longitudinal thread system 5 can be seen from the drawing.
  • Two adjacent threads of the uppermost transverse thread layer 1 are then integrated Cross threads between the top layer 1 and the first intermediate layer 2 therethrough.
  • the diameter of the transverse threads of the uppermost transverse thread layer 1 is less than the diameter of the threads of the transverse thread layer 2, the increased integration of the longitudinal threads in the uppermost transverse thread layer 1 reduces their openness to the transverse thread layer 2.
  • the uppermost transverse thread layer 1 and the transverse thread layer 2 connected to it by the first longitudinal thread system 5 have an open space for water storage of approximately 50% of their volume.
  • the integral permeability of both layers, measured by the air passage, is 1420 l / ms at a vacuum of 10 mm WS.
  • the transverse threads of the lowermost transverse thread layer 4 are arranged exactly below those of the second intermediate layer, so that the lowest transverse thread layer 4 also has 14 transverse threads per cm. However, the thread diameter here is 0.35 mm.
  • the transverse thread layer 3 and the lowermost transverse thread layer 4, which together form the support band, are connected to one another by a second longitudinal thread system 6, which has 35 longitudinal threads per cm, the thread diameter being 0.27 mm.
  • the integration of the threads of the second intermediate layer and that of the lowermost transverse thread layer 4 by the second longitudinal thread system 6 is, as the figure shows, carried out in the same way as in the uppermost transverse thread layer 1 and the transverse thread layer 2.
  • the longitudinal thread system 6 binds more strongly into the Cross thread layer 3, which has the consequence that the fabric opens from the second intermediate layer to the lowest cross thread layer 4 also in the support band.
  • the fabric part of the dewatering belt consisting of the transverse thread layer 3 and the lowest transverse thread layer 4 has an integral, open sieve space of 60% with a total permeability of 2500 l / ms.
  • All four transverse thread layers 1 to 4 are connected to one another along their longitudinal edge by a third longitudinal thread system (not shown for reasons of clarity) with a small number of threads.
  • This third longitudinal thread system consists of twisted thread, which has a diameter of 0.15 mm.
  • the drainage tape formed in the above manner has a total thickness of 1.6 mm. Of these, 0.25 mm are assigned to the top transverse thread layer 1, 0.30 mm to the first intermediate layer immediately below, 0.45 mm to the second intermediate layer and 0.6 mm to the lowest transverse thread layer.
  • the openness of the drainage belt is well over 50% and it is almost incompressible.

Landscapes

  • Paper (AREA)
  • Investigation Of Foundation Soil And Reinforcement Of Foundation Soil By Compacting Or Drainage (AREA)
EP85108267A 1984-07-17 1985-07-04 Entwässerungsband für Pressen in der Nasspartie einer Papiermaschine Expired - Lifetime EP0168718B2 (de)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT85108267T ATE53870T1 (de) 1984-07-17 1985-07-04 Entwaesserungsband fuer pressen in der nasspartie einer papiermaschine.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3426264 1984-07-17
DE19843426264 DE3426264A1 (de) 1984-07-17 1984-07-17 Entwaeserungsband fuer pressen in der nasspartie einer papiermaschine

Publications (4)

Publication Number Publication Date
EP0168718A2 EP0168718A2 (de) 1986-01-22
EP0168718A3 EP0168718A3 (en) 1986-08-13
EP0168718B1 EP0168718B1 (de) 1990-05-02
EP0168718B2 true EP0168718B2 (de) 1996-05-15

Family

ID=6240818

Family Applications (1)

Application Number Title Priority Date Filing Date
EP85108267A Expired - Lifetime EP0168718B2 (de) 1984-07-17 1985-07-04 Entwässerungsband für Pressen in der Nasspartie einer Papiermaschine

Country Status (14)

Country Link
US (2) US4867206A (enrdf_load_stackoverflow)
EP (1) EP0168718B2 (enrdf_load_stackoverflow)
JP (1) JPS6141394A (enrdf_load_stackoverflow)
AR (1) AR245247A1 (enrdf_load_stackoverflow)
AT (1) ATE53870T1 (enrdf_load_stackoverflow)
AU (1) AU575178B2 (enrdf_load_stackoverflow)
BR (1) BR8503111A (enrdf_load_stackoverflow)
CA (1) CA1272631A (enrdf_load_stackoverflow)
DE (2) DE3426264A1 (enrdf_load_stackoverflow)
ES (1) ES288128Y (enrdf_load_stackoverflow)
FI (1) FI80919C (enrdf_load_stackoverflow)
MX (1) MX161288A (enrdf_load_stackoverflow)
NO (1) NO166881C (enrdf_load_stackoverflow)
PT (1) PT80813B (enrdf_load_stackoverflow)

Families Citing this family (38)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3426264A1 (de) * 1984-07-17 1986-01-30 Franz F. 5160 Düren Kufferath Entwaeserungsband fuer pressen in der nasspartie einer papiermaschine
DE3600530A1 (de) * 1986-01-10 1987-07-16 Wangner Gmbh Co Kg Hermann Verwendung einer papiermaschinenbespannung zur herstellung von tissue-papier oder poroesem vlies und dafuer geeignete papiermaschinenbespannung
DE3817144A1 (de) * 1988-05-19 1989-11-30 Wangner Gmbh Co Kg Hermann Doppellagige bespannung fuer den blattbildungsbereich einer papiermaschine
CA1320410C (en) * 1988-06-27 1993-07-20 Takuo Tate Papermakers' double layer type fabrics
US5052448A (en) * 1989-02-10 1991-10-01 Huyck Corporation Self stitching multilayer papermaking fabric
JPH02122100U (enrdf_load_stackoverflow) * 1989-03-18 1990-10-04
MX172727B (es) * 1989-09-19 1994-01-10 Jwi Ltd Tela eliminadora de agua de la seccion de prensa.
DE3938159A1 (de) * 1989-11-16 1991-05-23 Oberdorfer Fa F Verbundgewebe fuer papiermaschinensiebe
US5025839A (en) * 1990-03-29 1991-06-25 Asten Group, Inc. Two-ply papermakers forming fabric with zig-zagging MD yarns
US5199467A (en) * 1990-06-06 1993-04-06 Asten Group, Inc. Papermakers fabric with stacked machine direction yarns
US5411062A (en) * 1990-06-06 1995-05-02 Asten Group, Inc. Papermakers fabric with orthogonal machine direction yarn seaming loops
USRE35966E (en) * 1990-06-06 1998-11-24 Asten, Inc. Papermakers fabric with orthogonal machine direction yarn seaming loops
US5713396A (en) * 1990-06-06 1998-02-03 Asten, Inc. Papermakers fabric with stacked machine and cross machine direction yarns
US5089324A (en) * 1990-09-18 1992-02-18 Jwi Ltd. Press section dewatering fabric
AT394869B (de) * 1990-10-25 1992-07-10 Hutter & Schrantz Ag Gewebe zum einsatz als papiermaschinenbespannung
DE4125470C2 (de) * 1991-08-01 1995-10-12 Voith Gmbh J M Schuhpresse zum Entwässern einer Faserstoff-Bahn
US5169709A (en) * 1991-10-16 1992-12-08 Wangner Systems Corporation Paper machine forming fabric with controlled porosity
US5164249A (en) * 1991-11-22 1992-11-17 Wangner Systems Corporation Controlled porosity papermaking fabric
US5508094A (en) * 1991-12-18 1996-04-16 Albany International Corp. Press fabrics for paper machines
US5360518A (en) * 1991-12-18 1994-11-01 Albany International Corp. Press fabrics for paper machines
DE4232319A1 (de) * 1992-09-26 1994-03-31 Franz F Kufferath Mehrlagiges Pressensieb für Naßpressen einer Papiermaschine
US5421374A (en) * 1993-10-08 1995-06-06 Asten Group, Inc. Two-ply forming fabric with three or more times as many CMD yarns in the top ply than in the bottom ply
DE4423436A1 (de) * 1994-07-05 1996-01-11 Franz F Kufferath Verfahren zur Entwässerung einer Papierbahn und Vorrichtung zur Durchführung des Verfahrens
DE9416520U1 (de) * 1994-10-14 1996-02-15 Württembergische Filztuchfabrik D. Geschmay GmbH, 73035 Göppingen Preßfilz für die Entwässerung
US6030908A (en) * 1998-03-16 2000-02-29 Jwi Ltd. Multilayer porous fabric
DE19859581A1 (de) * 1998-12-22 2000-06-29 Voith Fabrics Heidenheim Gmbh Mehrlagiges Papiermaschinensieb zur Entwässerung und Blattbildung
JP2003089990A (ja) * 2001-09-14 2003-03-28 Ichikawa Woolen Textile Co Ltd 抄紙用プレスフェルト
US7128810B2 (en) * 2002-10-10 2006-10-31 Albany International Corp. Anti-rewet press fabric
AU2003282211A1 (en) * 2002-10-24 2004-05-13 Voith Fabrics Heidenheim Gmbh And Co. Kg. Condensation dryer fabric
US7407564B2 (en) * 2002-11-15 2008-08-05 Albany International Corp. Stratified press fabric
US7008512B2 (en) * 2002-11-21 2006-03-07 Albany International Corp. Fabric with three vertically stacked wefts with twinned forming wefts
US20060231154A1 (en) * 2003-03-03 2006-10-19 Hay Stewart L Composite forming fabric
US7059359B2 (en) * 2003-05-22 2006-06-13 Voith Fabrics Warp bound composite papermaking fabric
US6978809B2 (en) 2003-09-29 2005-12-27 Voith Fabrics Composite papermaking fabric
AU2003293512A1 (en) 2003-12-11 2005-07-14 Albany International Corp. Passive sensor system for detection or wear problems in paper machine clothing
US20060278294A1 (en) * 2005-06-08 2006-12-14 Voith Fabrics Patent Gmbh Hybrid warp exchange triple layer forming fabric
DE102006022235A1 (de) * 2006-05-12 2007-11-15 Voith Patent Gmbh Papiermacher-Trockensieb
JP4883629B2 (ja) * 2007-03-13 2012-02-22 イチカワ株式会社 湿紙搬送用ベルト

Family Cites Families (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2949134A (en) * 1955-09-23 1960-08-16 Scapa Dryers Ltd Papermakers' felts and like industrial woven textile fabrics
US3214326A (en) * 1963-04-16 1965-10-26 Huyck Corp Paper pressing method, felt and apparatus
US3885603A (en) * 1973-11-21 1975-05-27 Creech Evans S Papermaking fabric
US4356844A (en) * 1980-02-11 1982-11-02 Huyck Corporation Papermaker's forming fabric
US4503113A (en) * 1982-03-12 1985-03-05 Huyck Corporation Papermaker felt with a three-layered base fabric
DE3224187C2 (de) * 1982-06-29 1989-01-12 Hermann Wangner Gmbh & Co Kg, 7410 Reutlingen Verband-Gewebe als Bespannung für den Blattbildungsbereich einer Papiermaschine
DE3225599C2 (de) * 1982-07-08 1991-08-01 Hermann Wangner Gmbh & Co Kg, 7410 Reutlingen Verbund-Gewebe als Bespannung für den Blattbildungsbereich einer Papiermaschine
DE3305713C1 (de) * 1983-02-18 1984-04-19 Hermann Wangner Gmbh & Co Kg, 7410 Reutlingen Verbund-Gewebe als Bespannung fuer den Blattbildungsteil einer Papiermaschine
US4564051A (en) * 1983-07-16 1986-01-14 Andreas Kufferath Gmbh & Co. Kg Multiple ply dewatering screen particularly for a web forming part of a paper making machine
SE439651B (sv) * 1983-10-25 1985-06-24 Nordiskafilt Ab Formeringsvira
DE3426264A1 (de) * 1984-07-17 1986-01-30 Franz F. 5160 Düren Kufferath Entwaeserungsband fuer pressen in der nasspartie einer papiermaschine

Also Published As

Publication number Publication date
EP0168718B1 (de) 1990-05-02
AU575178B2 (en) 1988-07-21
NO166881B (no) 1991-06-03
AR245247A1 (es) 1993-12-30
EP0168718A2 (de) 1986-01-22
ES288128Y (es) 1986-08-01
MX161288A (es) 1990-08-29
FI80919B (fi) 1990-04-30
EP0168718A3 (en) 1986-08-13
FI80919C (fi) 1990-08-10
CA1272631A (en) 1990-08-14
BR8503111A (pt) 1986-03-18
US5056565A (en) 1991-10-15
AU4456985A (en) 1986-01-23
DE3426264A1 (de) 1986-01-30
DE3426264C2 (enrdf_load_stackoverflow) 1988-04-21
NO166881C (no) 1996-04-25
ES288128U (es) 1986-01-01
JPS6141394A (ja) 1986-02-27
NO852839L (no) 1986-01-20
PT80813A (en) 1985-08-01
FI852774L (fi) 1986-01-18
DE3577458D1 (de) 1990-06-07
PT80813B (pt) 1987-09-30
ATE53870T1 (de) 1990-06-15
US4867206A (en) 1989-09-19
FI852774A0 (fi) 1985-07-15

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