EP0013994A1 - Tamis sans fin d'égouttage à plusieurs couches et procédé de liaison sans fin d'un tamis d'égouttage à plusieurs couches - Google Patents

Tamis sans fin d'égouttage à plusieurs couches et procédé de liaison sans fin d'un tamis d'égouttage à plusieurs couches Download PDF

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Publication number
EP0013994A1
EP0013994A1 EP80100383A EP80100383A EP0013994A1 EP 0013994 A1 EP0013994 A1 EP 0013994A1 EP 80100383 A EP80100383 A EP 80100383A EP 80100383 A EP80100383 A EP 80100383A EP 0013994 A1 EP0013994 A1 EP 0013994A1
Authority
EP
European Patent Office
Prior art keywords
layer
layers
endless
sieve
seam
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
EP80100383A
Other languages
German (de)
English (en)
Other versions
EP0013994B1 (fr
Inventor
Konrad Eckstein
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.)
Herman Wangner GmbH and Co KG
Original Assignee
Herman Wangner GmbH and Co KG
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 Herman Wangner GmbH and Co KG filed Critical Herman Wangner GmbH and Co KG
Priority to AT80100383T priority Critical patent/ATE5008T1/de
Publication of EP0013994A1 publication Critical patent/EP0013994A1/fr
Application granted granted Critical
Publication of EP0013994B1 publication Critical patent/EP0013994B1/fr
Expired 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
    • D21F1/0054—Seams thereof
    • 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
    • D21F1/10—Wire-cloths
    • D21F1/12—Seams thereof
    • 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
    • Y10S162/904—Paper making and fiber liberation with specified seam structure of papermaking belt
    • 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
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T24/00—Buckles, buttons, clasps, etc.
    • Y10T24/16—Belt fasteners
    • Y10T24/1664—Splices

Definitions

  • the invention relates to a multilayer, endless drainage sieve according to the preamble of claim 1 and a method for making a multilayer drainage sieve endless according to the preamble of claim 9.
  • multi-layer drainage screens namely paper machine screens are known. These drainage screens should preferably be woven endlessly. However, they can also be woven flat and then made endless in a suitable manner. However, it is not disclosed how flat woven, multi-layer drainage screens can be made endless.
  • a multi-layer drainage screen can be made endless in the same way as a single-layer drainage screen, for example by simply sewing it together with a sewing machine, by means of a fabric connection seam (DE-OS 2 700 390) or a pin seam.
  • a fabric connection seam DE-OS 2 700 390
  • a pin seam Basically, it is also possible to make a multilayer drainage screen endless with a woven seam, as is generally known for single-layer drainage screens.
  • a device for making a single-layer drainage screen endless is described in DE-AS 1 710 205.
  • DE-OS 2 429 162 discloses a method for making multilayer screens endless, in which several zones are provided in order to increase the flexibility of a seam, which is in principle a plug-in seam, in which the warp threads are freed from at least one weft position.
  • the disadvantage of multi-layer screens made endless in this way is that the drainage performance in the seam area is significantly lower than in the rest of the screen.
  • DE-OS 2 707 705 discloses a method for making a multilayer fabric endless, in which free fabric flaps of different layers overlap and are made endless by sewing, stapling, gluing or a Velcro fastener.
  • this type of connection does not guarantee sufficient freedom of marking.
  • the object of the invention is a multi-layer, endless drainage screen, in which the drainage performance in the seam area deviates as little as possible from the drainage performance of the rest of the screen, and in a method for making a multilayer, flat-woven drainage screen endless.
  • the individual layers are preferably stitched at offset locations, which results in a particularly uniform drainage.
  • At least one layer is preferably connected by a woven seam or made endless.
  • Such sieves are particularly suitable for the production of paper, since the structure of the woven seam does not differ from that of the rest of the sieve, so that the seam does not form in the paper.
  • a particularly preferred embodiment of the invention consists in a multi-layer, in particular two-layer drainage screen, in which each layer is individually made endless by a woven seam.
  • the drainage screen according to the invention can be of any type of flat-woven drainage screen. It can have a plain weave, twill or satin weave or weave derived from it.
  • the warp and weft threads can be made of any suitable material, e.g. Made of metal (phosphor bronze) or plastic (polyester, polyamide). Part of the warp and / or weft threads can consist of plastic and another part of metal.
  • the drainage screen can also be coated.
  • the drainage sieve according to the invention consists of several layers which are connected to one another by a so-called binding chain. Each layer is a complete fabric in itself. The individual layers can differ in the type of weave, the size of the repeat and / or the material.
  • the drainage screen contains at least two layers, but can also have three or more layers.
  • the top layer namely the paper-bearing layer, consists of a fabric with a higher number of warp and weft threads per cm and of finer threads.
  • the diameter of the warp threads of a certain layer can differ from the diameter of the weft threads of the same layer.
  • the warp threads of a particular layer do not have to have the same diameter, for example they can be thicker in the edge area or thick and thin warp threads can alternate with one another. The same applies to the weft threads of a layer.
  • any dewatering sieve that consists of several layers and is woven flat is therefore possible.
  • connection points (seams) of the individual layers can lie one above the other. However, the connection points of the individual layers are preferably offset from one another in the longitudinal direction of the screen. This results in a particularly uniform drainage performance.
  • the seam can run perpendicular to the longitudinal direction of the screen.
  • the ends of a layer are sewn with a Sewing machine, welding, gluing or similarly made endless or the ends of a layer overlap, the seam or connection can also run obliquely to the longitudinal direction of the screen.
  • the top and bottom layers are sewn, since the paper pulp lies on it.
  • the ends of the non-firmly bonded layers can overlap or butt each other. If the ends of the lowest layer, that is to say the layer which comes into contact with the rollers, are not firmly connected, the ends of this layer preferably overlap.
  • the end of the lowermost layer pointing in the running direction is covered by the other end of the wire and therefore does not come into contact with the rollers.
  • the two ends can be chosen to be of any length. However, the end pointing in the running direction is preferably cut off as short as possible and overlapped by the other end of the screen by a few centimeters or more.
  • the invention also relates to multilayer, continuous drainage screens in which a corresponding number of groups of layers are made endless by at least two seams. Each group of layers is made endless by a single seam.
  • a layer is made endless by a woven seam and the other or the other layers with another seam, for example a pin seam, it is advantageous to first carry out the non-woven seam and lastly the woven seam, since the width of a woven seam can be controlled more precisely.
  • considerable difficulties arise in the manufacture of the woven seam in that the seam that has already been produced is used to produce the woven seam with special needs. If the seams are offset against each other, the production of the woven seam is hindered by the other fabric layers.
  • the manufacture of a weaving seam in a single-layer fabric will first be described with reference to FIG. 1.
  • the warp threads are first exposed to about 10 cm by removing weft threads.
  • the fabric ends prepared in this way are clamped on a tension table 3, the fabric ends, that is to say the weft threads 7, 8 remaining in the fabric, being exactly parallel at a certain distance of, for example, 8 cm.
  • the distance is generally a whole Numerical multiple of the weave repeat and is equal to or less than the length of the fringe-like warp thread ends (here 10 cm).
  • warp threads are now removed from a strip previously cut off from the fabric, the width of which corresponds exactly to the distance between the fabric ends (in the present case 8 cm).
  • the warp threads are left at one end of the strip so that the weft threads hold together.
  • the fringe-like protruding warp thread ends 9 of the two fabric ends 1, 2 and the weft threads 5 of the previously cut-off fabric strip, which have been freed of the warp threads, are now intertwined.
  • a device can be used, as described in DE-AS 1 710 205.
  • the exposed weft threads are drawn into heald frames, so that with the exposed weft threads a weaving shed can be formed, into which the warp thread ends projecting like fringes from the fabric ends are inserted. From the function of this device, the exposed weft threads are the warp and the fringe-like warp thread ends of the fabric are the weft.
  • a warp beam is not required in this device, since the warp threads left in the fabric strip hold the exposed weft threads together.
  • the end of the fabric strip, in which the warp threads are left, is held in place by a suitable clamping device.
  • the finished part of the woven seam takes over the function of the goods tree.
  • the frayed warp thread ends 9 are entered and pricked by hand.
  • the two opposite warp thread ends 9 are at a certain point, the so-called stitch place 10, inside the seam down or up or one end down and the other out and cut off.
  • the points at which the warp thread ends are brought out are arranged in a certain pattern within the woven seam. This pattern is essential for the tensile strength of the woven seam.
  • the basic idea is to achieve as large an overlap as possible of adjacent, opposite warp thread ends.
  • the piercing points 10 of adjacent warp thread ends should accordingly be offset in the longitudinal direction of the sieve.
  • the first layer 11 is woven endlessly, the ends of the second layer 12, which is located under the first layer, hanging down.
  • the first layer can then be endlessly woven essentially as described for a single-layer sieve and in connection with FIG. 1.
  • the sieve After the endless weaving of the first layer 11, the sieve is turned for reasons of easier access, so that the second layer 12 comes to lie on top. This is shown in FIG. 3.
  • the second layer 12 can no longer be woven endlessly in the same way as the first layer 11, since the weaving harness cannot be arranged between the fabric ends 13, 14 to be connected. This difficulty can be avoided by arranging the harness not next to the sieve plane, but instead placing it next to the sieve and lifting it out of the sieve plane so that it is on the side of the sieve that is opposite the first layer 11 that has already been sewn .
  • the distance of the Weave harness from the sieve level must be at least large enough that the exposed weft wires 5, which form the compartment, lie in their deep position just in the sieve level or slightly above the sieve level. However, this path can only be followed for screen widths up to approximately 80 cm. With wider sieves, the harness cannot be placed next to the sieve. The weaving harness must then be arranged at a correspondingly greater distance from the sieve plane, so that the shaft frames do not touch the already sewn first layer 11 in their lowest position.
  • the upper layer has a four-strand cross twill weave, the warp threads have a diameter of 0.20 mm and the warp number is 28 / cm.
  • the weft threads have a diameter of 0.24 mm and the number of wefts is 22 / cm.
  • the lower layer has a three-twill weave and consists of warp threads with a diameter of 0.35 mm and weft threads with a diameter of 0.40 mm.
  • the warp number is 14 / cm and the weft number 11 / cm.
  • the binding chain is pulled in single binding and has a diameter of 0.17 mm.
  • the binding chain number is 4.7 / cm.
  • a cross stripe of 15 cm warp length is cut off from one end of the sieve for a center piece to be used later.
  • the number of shots on both ends of the screen and in the center piece must match exactly.
  • the binding chain is cut out between the two sieve layers at a depth of 20 cm and removed so that no chain residue remains.
  • the lower layer of the sieve is now woven endlessly (weaving seam) so that the seam width is approx. 6 cm in the warp direction.
  • the weft threads are removed in a 20 cm wide area from the two ends of the lower layer, so that warp thread fringes of 20 cm length are created.
  • the sieve is then clamped on a seaming device, similar to that described in DE-AS 1 710 205.
  • a strip is now selected from the middle section, which contains 65 weft wires and is connected to the repeat of the layer ends, in accordance with the seam width of 6 cm. These 65 weft wires are now drawn into the three-twill repeat of the seaming machine.
  • the first warp thread fringe of the two ply ends can now be braided into the open shed and the warp thread fringes are pricked at a location that is close to the first ply end, that is, they are led out.
  • the second warp thread fringes are braided in and brought out at a piercing point which is relatively far away from the first layer end.
  • the other warp thread fringes are woven in and pierced in a corresponding manner.
  • the upper layer is now woven endlessly, as was explained in connection with the lower layer, that is to say in the ends of the layers to be connected Weft wires removed and the warp threads in the middle.
  • the weft threads of the middle piece are now drawn in in the four-twine repeat, the number of threads drawn in now being 128 so that the woven seam of the upper layer has the same width as the woven seam of the lower layer.
  • the warp thread fringes which are guided outside are cut off.

Landscapes

  • Woven Fabrics (AREA)
  • Adhesive Tapes (AREA)
  • Radiation-Therapy Devices (AREA)
  • Developing Agents For Electrophotography (AREA)
  • Paper (AREA)
  • Immobilizing And Processing Of Enzymes And Microorganisms (AREA)
  • Medicines Containing Plant Substances (AREA)
  • Centrifugal Separators (AREA)
  • Devices For Blowing Cold Air, Devices For Blowing Warm Air, And Means For Preventing Water Condensation In Air Conditioning Units (AREA)
  • Investigation Of Foundation Soil And Reinforcement Of Foundation Soil By Compacting Or Drainage (AREA)
  • Electrical Discharge Machining, Electrochemical Machining, And Combined Machining (AREA)
EP80100383A 1979-01-25 1980-01-25 Tamis sans fin d'égouttage à plusieurs couches et procédé de liaison sans fin d'un tamis d'égouttage à plusieurs couches Expired EP0013994B1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT80100383T ATE5008T1 (de) 1979-01-25 1980-01-25 Mehrlagiges, endlosgemachtes entwaesserungssieb und verfahren zum endlosmachen eines mehrlagigen entwaesserungssiebes.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE2902880A DE2902880C2 (de) 1979-01-25 1979-01-25 Verfahren zum Endlosmachen eines mehrlagigen Entwässerungssiebes und nach diesem Verfahren hergestelltes Entwässerungssieb
DE2902880 1979-01-25

Publications (2)

Publication Number Publication Date
EP0013994A1 true EP0013994A1 (fr) 1980-08-06
EP0013994B1 EP0013994B1 (fr) 1983-10-12

Family

ID=6061384

Family Applications (1)

Application Number Title Priority Date Filing Date
EP80100383A Expired EP0013994B1 (fr) 1979-01-25 1980-01-25 Tamis sans fin d'égouttage à plusieurs couches et procédé de liaison sans fin d'un tamis d'égouttage à plusieurs couches

Country Status (7)

Country Link
US (1) US4311172A (fr)
EP (1) EP0013994B1 (fr)
AT (1) ATE5008T1 (fr)
CA (1) CA1120299A (fr)
DE (1) DE2902880C2 (fr)
FI (1) FI73481C (fr)
NO (1) NO152101C (fr)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0043441A1 (fr) * 1980-07-09 1982-01-13 Hermann Wangner GmbH & Co. KG Procédé et dispositif pour réaliser une jointure tissée comme liaison entre deux bouts de tissu
EP0236601A1 (fr) * 1986-02-22 1987-09-16 Asten Group Inc. Machine automatique pour la jonction de deux extrémités de bande
WO2023110220A1 (fr) * 2021-12-16 2023-06-22 Voith Patent Gmbh Structure de base, vêtement et procédé de production

Families Citing this family (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3224187C2 (de) * 1982-06-29 1989-01-12 Hermann Wangner Gmbh & Co Kg, 7410 Reutlingen Verband-Gewebe als Bespannung für den Blattbildungsbereich einer Papiermaschine
EP0134214A1 (fr) * 1982-08-20 1985-03-20 Scapa-Porritt Limited Machine pour couture automatique
US4706320A (en) * 1985-12-04 1987-11-17 Xerox Corporation Electrostatic charging and cleaning brushes
DE3914533A1 (de) * 1989-05-02 1990-11-08 Heimbach Gmbh Thomas Josef Band fuer papiermaschinen
US5879777A (en) * 1997-06-19 1999-03-09 Asten, Inc. Modular papermaking fabric
FI110134B (fi) * 2000-12-18 2002-11-29 Tamfelt Oyj Abp Menetelmä puristinhuovan valmistamiseksi, puristinhuopa sekä pohjakangas
US7005038B2 (en) * 2001-10-05 2006-02-28 National Wire Fabric, Inc. Belt-machine combination
DE102006042812A1 (de) * 2006-09-08 2008-03-27 Voith Patent Gmbh Band für eine Maschine zur Herstellung von Bahnmaterial, insbesondere Papier, Karton oder Tissue, und Verfahren zur Herstellung eines derartigen Bandes
DE102007008500A1 (de) * 2007-02-21 2008-08-28 Voith Patent Gmbh Pressband
US7513277B2 (en) * 2007-05-23 2009-04-07 Voith Patent Gmbh Low tensile creep belt
US7794555B2 (en) * 2007-09-05 2010-09-14 Albany International Corp. Formation of a fabric seam by ultrasonic gap welding of a flat woven fabric
US8597468B2 (en) * 2011-12-05 2013-12-03 Voith Patent Gmbh Joining process for a papermachine clothing
US10696008B2 (en) * 2013-03-15 2020-06-30 Rolls-Royce Corporation Textile material joining technique
USD771394S1 (en) * 2015-06-02 2016-11-15 Astenjohnson, Inc. Industrial textile panel

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1948411A (en) * 1931-01-23 1934-02-20 Eduard V Asten Endless belt and seam construction therefor
US3664907A (en) * 1970-02-02 1972-05-23 Huyck Corp Industrial conveyor belts

Family Cites Families (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE901256C (de) * 1941-02-09 1954-01-07 Antonius Kufferath Verfahren zur Herstellung einer Webenaht zum Endlosmachen von Metalltuechern, insbesondere fuer Papiermaschinen
FR952973A (fr) * 1947-08-25 1949-11-28 Procédé d'obtention d'une courroie sans fin, tissée
DE1056436B (de) * 1956-01-09 1959-04-30 Scapa Dryers Ltd Gelenkiger Verbinder fuer Riemen und Baender, insbesondere fuer Papiermaschinentrockenfilze
US3060547A (en) * 1959-10-23 1962-10-30 Johnson Wire Works Ltd Woven mesh joint forming
GB902503A (en) * 1960-04-01 1962-08-01 Thomas Hardman & Sons Ltd Improvements in the manufacture of felts for use in the manufacture of paper and other products
DE1710205C3 (de) * 1967-09-05 1978-10-05 Ateliers De Constructions Mecaniques Louis Cretin S.A., Vienne (Frankreich) Vorrichtung zum Endlosweben einer Gewebebahn
DE2455184A1 (de) * 1973-11-21 1975-05-22 Slaughter Philip H Gewebtes fourdrinierband
DE2429162A1 (de) * 1974-06-18 1976-01-08 Heinz Kerber Endlose verbindung von mehrlagigen trockenfilzen- und sieben
GB1488815A (en) * 1974-09-27 1977-10-12 Scapa Porritt Ltd Providing loops at a fabric end
US4006760A (en) * 1976-01-08 1977-02-08 Albany International Corporation Fabric connector seam
US4141388A (en) * 1977-03-23 1979-02-27 Albany International Corporation Paper machine dryer fabric
US4186780A (en) * 1978-12-15 1980-02-05 Albany International Corp. Seam construction for multi-layer felts
US4267226A (en) * 1979-09-19 1981-05-12 Wurttembergische Filztuchfabrik Fabric web and a method of making a fabric web for a dewatering machine

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1948411A (en) * 1931-01-23 1934-02-20 Eduard V Asten Endless belt and seam construction therefor
US3664907A (en) * 1970-02-02 1972-05-23 Huyck Corp Industrial conveyor belts

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0043441A1 (fr) * 1980-07-09 1982-01-13 Hermann Wangner GmbH & Co. KG Procédé et dispositif pour réaliser une jointure tissée comme liaison entre deux bouts de tissu
EP0236601A1 (fr) * 1986-02-22 1987-09-16 Asten Group Inc. Machine automatique pour la jonction de deux extrémités de bande
WO2023110220A1 (fr) * 2021-12-16 2023-06-22 Voith Patent Gmbh Structure de base, vêtement et procédé de production

Also Published As

Publication number Publication date
DE2902880A1 (de) 1980-07-31
FI73481C (fi) 1987-10-09
FI73481B (fi) 1987-06-30
NO152101B (no) 1985-04-22
EP0013994B1 (fr) 1983-10-12
CA1120299A (fr) 1982-03-23
US4311172A (en) 1982-01-19
ATE5008T1 (de) 1983-10-15
NO152101C (no) 1985-07-31
NO800171L (no) 1980-07-28
DE2902880C2 (de) 1985-10-03
FI800011A (fi) 1980-07-26

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