EP1155186B1 - Jonction a armure symetrique pour bande tissee a armure asymetrique - Google Patents

Jonction a armure symetrique pour bande tissee a armure asymetrique Download PDF

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Publication number
EP1155186B1
EP1155186B1 EP00905129A EP00905129A EP1155186B1 EP 1155186 B1 EP1155186 B1 EP 1155186B1 EP 00905129 A EP00905129 A EP 00905129A EP 00905129 A EP00905129 A EP 00905129A EP 1155186 B1 EP1155186 B1 EP 1155186B1
Authority
EP
European Patent Office
Prior art keywords
strip
loops
turns
rod
woven
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
EP00905129A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP1155186A1 (fr
Inventor
Maurice Gauthier
Jean-Louis Monnerie
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.)
Albany International France SAS
Original Assignee
COFPA Compagnie des Feutres pour Papeteries et des Tissus Industriels SA
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 COFPA Compagnie des Feutres pour Papeteries et des Tissus Industriels SA filed Critical COFPA Compagnie des Feutres pour Papeteries et des Tissus Industriels SA
Publication of EP1155186A1 publication Critical patent/EP1155186A1/fr
Application granted granted Critical
Publication of EP1155186B1 publication Critical patent/EP1155186B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • D—TEXTILES; PAPER
    • D03—WEAVING
    • D03D—WOVEN FABRICS; METHODS OF WEAVING; LOOMS
    • D03D3/00—Woven fabrics characterised by their shape
    • D03D3/04—Endless fabrics
    • 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

Definitions

  • the invention relates to a woven strip, particularly intended for the paper industry, having an asymmetrical weave made up of weft and warp threads extending between two opposite ends of the bandaged. the warp threads being rewoven. after folding at each end of the strip, with the weft threads on a reweaving area adjacent to said end to form loops.
  • a woven strip particularly intended for the paper industry, having an asymmetrical weave made up of weft and warp threads extending between two opposite ends of the bandaged. the warp threads being rewoven. after folding at each end of the strip, with the weft threads on a reweaving area adjacent to said end to form loops.
  • Such a strip is known from document EP-A-0 612 882.
  • the manufacturing machines in continuous paper generally include three sections respectively, from training. water extraction by pressing and drying the sheet paper.
  • the sheet of paper is applied to a set of heated cylinders.
  • a set of heated cylinders To improve the drying speed of the paper sheet, it is transported on the cylinders heated by woven bands (commonly called dryer), preferably having an asymmetrical weave, comprising generally weft threads having a round section woven with threads chain having a flattened section, these chain wires defining large floats on the right side of the strip which is in contact with the sheet of paper.
  • woven bands commonly called dryer
  • This type of strip allows a reduction in the marking of the sheet of paper by the chain threads, this in a machine configuration in which the strip is in constant contact with the sheet throughout the course of it in a serpentine shape on two horizontal rows of cylinders.
  • the neutral plane of the band (the plane of the band which undergoes neither compression, no extension when the strip is bent) is arranged between the median plane and the right side of the strip in the direction of its thickness.
  • Each woven strip is configured endlessly when installed on machine, using, for example, a rigid rod which is passed inside the loops formed at one end of the strip and loops formed at the other end of the strip, the loops of the two ends being meshed together with the others before passing the ring as is well known.
  • this band, configured endlessly is put into service, under the effect of tensions which are exerted on the band during its displacement training, the joining line of the two ends of the strip formed by the rod is propelled from the median plane of the band towards the right side of the strip, the axis of the rod coming to be placed in the neutral plane of the strip.
  • This displacement of the strip joining line in the direction of the thickness of the strip creates an overpressure on the sheet of paper which induces a significant risk of marking the sheet of paper and rapid abrasion of the bandaged.
  • the object of the invention is to remedy these drawbacks.
  • the invention relates to a woven band, intended more particularly in the paper industry, having an asymmetrical weave made up by weft threads and warp threads extending between two ends opposite of the strip, the warp threads being rewoven, after folding to each end of the strip, with the weft threads on a reweaving area near said end to form loops, characterized in that each reweaving area has symmetrical weave.
  • Such a construction makes the joining line of the ends opposite of the strip is no longer subject to displacement in the direction of the thickness of the strip when the latter, configured endlessly, is put under pressure. Indeed, in the areas of weaving of the warp threads, the plane neutral of the band is confused with the median plane of the latter in which extends the joining line of the ends of the strip. In addition, the gradient of the neutral plane of the strip is distributed over the two zones of reweaving of the warp threads and no longer located on the joining line from both ends of the strip.
  • each zone of reweaving with symmetrical weave near one end of the strip can be formed by making the chain wires having reached the end, after folding, instead of adjacent warp threads that were interrupted before the reweaving area.
  • the chain wires are bent orthogonally to the band plane at each end of the latter and the weft threads of the reweaving zones have a diameter smaller than the weft threads of the rest of the strip.
  • the warp threads have a flattened section which reduces the marking of the sheet of paper and the tape permeability.
  • FIG. 1 very schematically shows, viewed in longitudinal section, one end of a strip woven to a single plane of weft threads according to the invention.
  • FIG. 2 very schematically shows, viewed in longitudinal section, one end of a woven strip with two planes of weft threads according to the invention.
  • Figure 3 shows very schematically, in top view, the loops formed at both ends of a woven strip according to the invention for a joining using two rods.
  • Figure 4 shows very schematically, in top view, the loops formed at one end of a woven strip according to the invention for a joining using two spirals.
  • Figures 5 and 6 show very schematically, in top view, the loops formed at one end of a woven strip according to the invention for a joining using a spiral.
  • FIG. 1 very schematically shows in longitudinal section, the end of a woven strip 10 according to the invention which is intended entirely particularly to a drying section of a machine for manufacturing the paper.
  • This woven strip includes a single plane of weft threads 11-15, 17-24 of round section and chain wires having here a flattened section and which extend between the two opposite ends of the strip.
  • a single chain wire 16 is illustrated in FIG. 1.
  • each chain wire such as 16 defines large floats on the weft threads, here floats covering three consecutive weft threads, for constitute an asymmetrical weave pattern in which the neutral plane PN of the strip is offset from the median plane PM of the strip.
  • the warp 16 after each float on the right side 26 of the strip crosses the weft plane to be woven on the reverse side 26 of the strip bypassing a single weft thread and crossing the weft thread plane again to define another float on the right side of the strip. It is understood that adjacent warp threads in the direction of the weft threads, cross the plane of weft at different levels along the strip as is well known.
  • each chain wire such as 16 is rewoven, after folding, with weft threads 17-24 on a reweaving area near this end but in such a way that this reweaving area has a symmetrical armor in which the neutral plane PN of the strip is confused with the median plane PM of the band. More particularly as visible in Figure 1, we see that the chain wire 16, after folding around the weft thread 17, is rewoven by defining floats on the reverse side 26 of the strip covering three consecutive weft threads such as 19-21. Therefore, each chain thread is rewoven after folding on the reverse side of the strip with a weave pattern to the weave pattern on the right side of the strip.
  • the limit of the reweaving zone with symmetrical weave of the warp threads at one end of the band is indicated by the arrow B while the arrow A indicates the limit of the rest of the band body with asymmetrical weave.
  • the chain wire 16 of section flattened is rewoven with weft threads 17-24 in the reweaving area B which have a diameter d smaller than the diameter D of the weft threads 11-15 of the rest A of the strip and the chain wire 16 is rewoven in superposition on itself of it is folded at the end of the strip orthogonally to the plane of the bandaged.
  • the thickness H 'of the strip in the reweaving zones B is the same as the thickness H of the body A of the strip.
  • the difference between the diameter of the threads of weft of the body A of the strip and the diameter of the wefts of the zones of reweaving B is twice the thickness of a flattened section wire such as 16.
  • Figure 2 shows a woven strip similar to that of Figure 1 but with two weft planes.
  • each chain wire such as 16 to section flattened is folded at each end of the strip orthogonal to the plane of the strip by forming either a joining loop such as 27, or not joining loop, i.e. by tightening the last weft thread 17 of the end of the strip so as to create a free space between two loops of adjacent junctions formed at this end of the strip.
  • the reduction the density of the loops contributes to facilitate the joining of the two ends of the strip.
  • FIG. 3 illustrates a first embodiment of loops joining at both ends of a woven strip according to the invention.
  • a sequence of four sons of chain FC1-FC4 form at one end B (reweaving area B) of the strip respectively a large loop, no loop, a small loop and no loop and that these same wires of chain FC1-FC4 form at the other end B 'of the strip (reweaving zone B ') respectively no loop, a large loop, a small loop and no loop.
  • the large loops protrude by compared to small loops.
  • the loops on one end of the strip are meshed with the loops on the other end of the strip.
  • junction area of the two ends of the band can flex in the plane of the band but without pivoting around one of the rods 28 or 29. Note that if the reweaving is such that the loops formed at the ends of the strip have an identical length, these loops could not mesh with each other due to their density too high and high resistance of the junction could not be obtained.
  • FIG. 4 illustrates a second embodiment of the loops joining at the two ends of a woven strip according to the invention for a joining of the two ends using two spirals.
  • a sequence of four sons of chain FC1-FC4 form at a end B (reweaving area B) of the band respectively no loop, a small loop, no loop and a large loop.
  • the turns of a first spiral 30 are meshed with the loops formed at this end of the strip and are held by a first rod 31 passed in a defined channel by the small loops and the turns of the spiral.
  • a second ring 32 has passed in a channel defined by the large loops and the turns of the spiral 30. This construction is identical on the other end of the strip (not shown).
  • the length of the loops formed at each end of the strip and the diameter of the rods 31 and 32 are calculated in such a way that after joining the two ends of the strip and its running tension, the end of the small loops press on the rod 32 passed in the large loops making thus united in effort and tensile strength the small loops and large curls.
  • the resistance of the junction is maximum and comparable to that of the embodiment described in FIG. 3.
  • the large loops and the second ring 32 prevents the spiral 30 from pivoting around the first ring 31 and reduces the air permeability of the spiral area which contributes to reduce the risk of wear on the first rod 31 and marking of the sheet paper.
  • Each spiral has a thickness identical to that of the strip and the width of the monofilament of each turn of the spirals must not be greater than 80% of the width of a chain wire.
  • FIG. 5 illustrates a third embodiment of loops joining formed only at one end B 'of a woven strip according to the invention for joining the two ends of the strip using a spiral 35.
  • the spiral 35 is permanently fixed at the end of manufacture of the strip at the other end B thereof by bending the chain wires FC2 and FC4, during the reweaving, around the heel of the turns of the spiral and of a rod 36.
  • loops are formed separated two by two by a free space.
  • the turns of the spiral 35 are meshed with the loops and a rod 37 is passed through the channel defined by the loops and turns. Free space to the inside of the spiral can be filled with stuffing rods such as 38 so as to reduce the permeability of the junction zone.
  • Figure 6 shows a construction of the joining area similar to that of Figure 5 except that the loops are grouped in pairs and the pairs of loops are separated by pairs of free spaces.
  • the sequence of four chain wires consecutive FC1-FC4 respectively form no loop, no loop, a loop and a loop at the end B 'of the strip. This construction allows reduce the number of turns of the spiral 35 and increase the width of the monofilament constituting each turn.
  • the turns of the spiral must have a width LS following the direction of the wires weft less than 80% of the width LF of a warp thread ( Figure 5) or two threads chain ( Figure 6).
  • the resistance of the junction is maximum and can be equal to that of the strip in zones B, B 'if the spiral has a resistance similar to that of the band.
  • the advantage of using a spiral according to the embodiments of the figures 5 and 6 is to make it possible to mesh the two ends of the strip by having a junction width narrower than that of the embodiment of Figure 3 which helps reduce the risk of marking the sheet of paper.
  • woven strips having two or more weft yarn planes can advantageously also be used in machines for manufacture of non-woven sails such as layers for infants, paper towels, geotextiles, etc.

Landscapes

  • Textile Engineering (AREA)
  • Engineering & Computer Science (AREA)
  • Woven Fabrics (AREA)
  • Paper (AREA)
  • Package Frames And Binding Bands (AREA)
  • Automotive Seat Belt Assembly (AREA)
  • Knitting Of Fabric (AREA)
  • Impression-Transfer Materials And Handling Thereof (AREA)
  • Diaphragms For Electromechanical Transducers (AREA)
  • Absorbent Articles And Supports Therefor (AREA)
  • Treatment Of Fiber Materials (AREA)
  • Looms (AREA)
  • Reinforced Plastic Materials (AREA)
EP00905129A 1999-02-16 2000-02-14 Jonction a armure symetrique pour bande tissee a armure asymetrique Expired - Lifetime EP1155186B1 (fr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
FR9901864 1999-02-16
FR9901864A FR2789702B1 (fr) 1999-02-16 1999-02-16 Jonction a armure symetrique pour bande tissee a armure asymetrique
PCT/FR2000/000359 WO2000049223A1 (fr) 1999-02-16 2000-02-14 Jonction a armure symetrique pour bande tissee a armure asymetrique

Publications (2)

Publication Number Publication Date
EP1155186A1 EP1155186A1 (fr) 2001-11-21
EP1155186B1 true EP1155186B1 (fr) 2004-04-21

Family

ID=9542082

Family Applications (1)

Application Number Title Priority Date Filing Date
EP00905129A Expired - Lifetime EP1155186B1 (fr) 1999-02-16 2000-02-14 Jonction a armure symetrique pour bande tissee a armure asymetrique

Country Status (18)

Country Link
US (1) US6450213B1 (ko)
EP (1) EP1155186B1 (ko)
JP (1) JP4564174B2 (ko)
KR (1) KR100634493B1 (ko)
CN (1) CN1114012C (ko)
AT (1) ATE264941T1 (ko)
AU (1) AU756877B2 (ko)
BR (1) BR0008247B1 (ko)
CA (1) CA2360842C (ko)
DE (1) DE60010051T2 (ko)
ES (1) ES2218125T3 (ko)
FR (1) FR2789702B1 (ko)
ID (1) ID30090A (ko)
MX (1) MXPA01008215A (ko)
NO (1) NO315861B1 (ko)
TW (1) TW508382B (ko)
WO (1) WO2000049223A1 (ko)
ZA (1) ZA200105871B (ko)

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AT411605B (de) * 2002-07-05 2004-03-25 Huyck Austria Gewebeband-einrichtung
WO2005090672A1 (en) * 2004-03-19 2005-09-29 James Harrison Dryer fabric seam
US7093621B2 (en) * 2004-12-15 2006-08-22 Albany International Corp. Multi-pin pin seam for an industrial fabric
GB2428693A (en) * 2005-08-02 2007-02-07 Brent Swaine Woven papermaking fabric with seam
DE102005056618A1 (de) * 2005-11-25 2007-05-31 Voith Patent Gmbh Gewebegefüge
GB2473039A (en) * 2009-08-28 2011-03-02 Ian Gerald Lang Seam for a woven industrial fabric
DE102017127000A1 (de) * 2017-09-27 2019-03-28 Voith Patent Gmbh Bespannung

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4438789A (en) * 1981-06-04 1984-03-27 Jwi Ltd. Woven pin seam in fabric and method
FR2578869B1 (fr) * 1985-03-12 1988-09-30 Binet Feutres Sa Dispositif de jonction pour feutre de presse humide et toile de papeterie.
JPH0129276Y2 (ko) * 1986-06-27 1989-09-06
ATE172764T1 (de) * 1990-06-06 1998-11-15 Asten S C V Papiermachergewebe mit flachen längsfäden
JPH0596109A (ja) * 1991-10-01 1993-04-20 Nippon Filcon Co Ltd ベルトプレス型汚泥脱水機用加圧ベルト端部の連結用ループとその製造方法及びこのベルト端部の連結方法
EP0641401B1 (en) * 1993-03-19 1997-12-17 Jwi Ltd High loop density pin seam
GB9703297D0 (en) * 1997-02-18 1997-04-09 Scapa Group Plc Modified spiral seam arrangement
US5769131A (en) * 1997-05-16 1998-06-23 Albany International Corp. Seam design for a dryer fabric
US6079454A (en) * 1997-11-24 2000-06-27 Astenjohnson, Inc. Loop/tie-back woven loop seam press base

Also Published As

Publication number Publication date
NO20013783D0 (no) 2001-08-01
ID30090A (id) 2001-11-01
TW508382B (en) 2002-11-01
ZA200105871B (en) 2002-09-17
NO20013783L (no) 2001-08-01
FR2789702A1 (fr) 2000-08-18
JP4564174B2 (ja) 2010-10-20
FR2789702B1 (fr) 2001-03-30
CA2360842C (fr) 2008-04-22
US6450213B1 (en) 2002-09-17
ES2218125T3 (es) 2004-11-16
KR20010111262A (ko) 2001-12-17
WO2000049223A1 (fr) 2000-08-24
DE60010051D1 (de) 2004-05-27
BR0008247B1 (pt) 2010-02-09
MXPA01008215A (es) 2004-11-12
JP2002537497A (ja) 2002-11-05
EP1155186A1 (fr) 2001-11-21
KR100634493B1 (ko) 2006-10-16
ATE264941T1 (de) 2004-05-15
BR0008247A (pt) 2001-10-30
AU2676700A (en) 2000-09-04
DE60010051T2 (de) 2004-12-09
AU756877B2 (en) 2003-01-23
CN1340122A (zh) 2002-03-13
CA2360842A1 (fr) 2000-08-24
NO315861B1 (no) 2003-11-03
CN1114012C (zh) 2003-07-09

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