EP0124082B1 - Gewebebahn, insbesondere für Papiermaschinen - Google Patents

Gewebebahn, insbesondere für Papiermaschinen Download PDF

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Publication number
EP0124082B1
EP0124082B1 EP84104678A EP84104678A EP0124082B1 EP 0124082 B1 EP0124082 B1 EP 0124082B1 EP 84104678 A EP84104678 A EP 84104678A EP 84104678 A EP84104678 A EP 84104678A EP 0124082 B1 EP0124082 B1 EP 0124082B1
Authority
EP
European Patent Office
Prior art keywords
planes
woof
threads
zone
group
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
Application number
EP84104678A
Other languages
English (en)
French (fr)
Other versions
EP0124082A1 (de
Inventor
Maurice Gauthier
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.)
COFPA Compagnie des Feutres pour Papeteries et des Tissus Industriels SA
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
Priority to AT84104678T priority Critical patent/ATE25533T1/de
Publication of EP0124082A1 publication Critical patent/EP0124082A1/de
Application granted granted Critical
Publication of EP0124082B1 publication Critical patent/EP0124082B1/de
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
    • D21F1/0036—Multi-layer screen-cloths
    • 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 present invention relates to a woven strip with n weft planes comprising weft threads and warp threads, the ends of which are folded and folded down, said strip also comprising loops in the vicinity of the folds used to join it, the zones neighbors of the folds having m weft planes.
  • Such woven bands are used in particular in the paper industry in particular as a drying fabric.
  • the strip is wrapped around the drying cylinders of the papermaking machine and then joined.
  • the woven strip according to the invention making it possible to avoid these drawbacks is characterized in that the region adjacent to a fold comprises, for each weave ratio of the warp threads, a first group of warp threads forming a lower layer of p weft planes and an upper layer folded over the lower layer having m - p weft planes, and a second group of warp threads forming a lower layer of q weft planes (q ⁇ p) and an upper layer folded over the lower layer, having m - q weft planes, at least some of the warp threads from each of said groups serving to form loops at the fold.
  • the area adjacent to a fold is thicker than the strip without a flap (m> n).
  • the threads of the folded chains are little or not stuffed in the lower layers which avoids internal stresses, sources of deformation and also decreases in permeability to air in the packing areas which cause decreases in the rate of evaporation of water from the sheet to be dried.
  • each loop is formed by a folded warp thread so that it lies in a plane perpendicular to the weft threads.
  • the loops thus occupy a small lateral space and loops can be made with 50 0 7 0 or more of the warp threads.
  • the number of threads in each of the groups for each weave ratio is preferably identical so as to best distribute the forces in the fabric.
  • the woven strip shown in FIG. 1 is of the type described in document US-A-4250822.
  • the ends 11 of the strip 12 are folded folded down and fixed by seams 13. Loops 14 are arranged in the vicinity of the folds 15, and when the loops 14 are interleaved a rod 16 can be introduced to join the fabric.
  • the weft threads 17 are shown by dots.
  • the end of the strip was divided into four zones A, B, C, D, zone D comprising the loops.
  • Each armor ratio of the warp yarns comprises a first group G 1 consisting of four warp yarns 1, 2, 3,4 and a second group G2 consisting of four warp yarns 5, 6, 7, 8.
  • the evolution of the first group G1 is shown in the foreground and that of the second group G2 in the background.
  • the warp threads 1 , 2, 3,4 pass under two weft threads of plane a, then on a weft thread of plane b and so on.
  • Zone A represents the band.
  • the wires 1 and 3 form two loops while the wires 2 and 4 are folded directly against the weft wires.
  • the wires 1, 2, 3, 4 form an upper layer 20 'folded over the lower layer 20 making extra thickness on the reverse of the strip.
  • Each warp thread 1, 2, 3, 4 passes successively over two weft threads and below two weft threads.
  • Wires 1 to 4 are interrupted at the end of zone C.
  • the threads 5 to 8 pass successively under two weft threads and then over two weft threads.
  • zone D the wires 5 and 7 form two loops while the wires 6 and 8 are folded directly without forming loops.
  • zone B the wires 5 to 8 form an upper layer 21 ′ by working on plane b.
  • zone C the weft plane b is common to the lower layer 20 of the first group G1 and to the upper layer 22 'of the second group G2.
  • zone B the weft plane b is common to the layer formed by the wires of group G1 and to the upper layer 21 'formed by the wires of group G2.
  • Each armor ratio has two groups G1, G2 but there could be three and more.
  • each group of wires G1, G2 comprise the same number.
  • the wires being deformed during the reweaving of zones B and C on a splicing machine (machine weaving the fabric perpendicular to its original weaving direction) or prepare during the weaving of the ends by action on the drawing.
  • the warp threads 5 to 8 are cut at the end of zone C.
  • the loops are made with 50% of the warp threads but it would be possible to further increase the density of the mouths.
  • the strip (zone A) comprises three weft planes a, b, c, zone C is similar to that of FIG. 2 (m - n - 3).
  • zone B the wires of group G1 form a layer lower than two planes 23 and a layer higher than one plane 23 '.
  • the wires of group G2 form a single layer with three planes like the band A.
  • FIGS. 2 and 7 only one end of the strip has been shown, but it is clear that the other end is preferably formed in a similar manner so that the zones comprising the loops can best cooperate in the joining of the band.

Landscapes

  • Paper (AREA)
  • Woven Fabrics (AREA)
  • Indole Compounds (AREA)
  • Belt Conveyors (AREA)

Claims (6)

1. Gewebtes Band mit n Schußebenen (a,b), das insbesondere dazu bestimmt ist, in der Papierindustrie verwendet zu werden, mit Schußfäden (17) und Kettfäden (1, 2, 3, 4,5,6,7, 8), deren Enden gefaltet und umgeschlagen sind, wobei das gewebte Band außerdem Schlaufen (14) in der Nähe der Falze (15) aufweist, die sie verbinden und wobei die den Falzen nahen Bereiche (C) n Schußebenen (a, b, c) aufweisen, dadurch gekennzeichnet, daß der einem Falz (15) benachbarte Bereiche (C) für jeden Bewehrungsrapport der Kettfäden eine erste Gruppe (G1) von Kettfäden (1, 2, 3, 4), die eine untere Schicht (20) von p Schußebenen (m > p > 1) und eine obere, auf die untere Schicht (20) umgeschlagene Schicht (20') mit m-p Schußebenen bildet, und eine zweite Gruppe (G2) von Kettfäden (5, 6, 7, 8) aufweist, die eine untere Schicht (22) von q Schußebenen (1 < q < p) und eine obere, auf die untere (22) umgeschlagene Schicht (22') mit m-q Schußebenen bildet, wobei zumindest einige der Kettfäden (1, 3, 5, 7) jeder dieser Gruppen (G1, G2) dazu dient, Schlaufen (14) in Höhe des Falzes (15) zu bilden.
2. Gewebtes Band nach Anspruch 1, dadurch gekennzeichnet, daß der Bereich (C) in der Nähe der Falze (15) dicker als das Band ohne Umschlag (A) ist (m > n).
3. Gewebtes Band nach Anspruch 2, dadurch gekennzeichnet, daß p gleich n gewählt wird, mit n > 1.
4. Gewebtes Band nach Anspruch 3, dadurch gekennzeichnet, daß es einen an das Band ohne Umschlag (A) angrenzenden Bereich (B) aufweist, in dem die erste Gruppe (G1) von Kettfäden nur eine untere Schicht bildet und in dem die untere Schicht (21) der zweiten Gruppe (G2) von Kettfäden r Schußebenen aufweist, während die obere Schicht (21') n-r Schußebenen aufweist und die Fäden der zweiten Gruppe (G2) in diesem Bereich (B) unterbrochen sind.
5. Gewebtes Band nach Anspruch 1, dadurch gekennzeichnet, daß n größer als 2 ist und daß der Bereich (C) in der Nähe der Falze von gleicher Dicke wie das Band ohne Umschlag (A) ist (m = n).
6. Gewebtes Band nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, daß jede Gruppe (G1, G2) die gleiche Anzahl von Kettfäden aufweist.
EP84104678A 1983-05-03 1984-04-26 Gewebebahn, insbesondere für Papiermaschinen Expired EP0124082B1 (de)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT84104678T ATE25533T1 (de) 1983-05-03 1984-04-26 Gewebebahn, insbesondere fuer papiermaschinen.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR8307403 1983-05-03
FR8307403A FR2545513B1 (fr) 1983-05-03 1983-05-03 Bande tissee notamment pour l'industrie papetiere

Publications (2)

Publication Number Publication Date
EP0124082A1 EP0124082A1 (de) 1984-11-07
EP0124082B1 true EP0124082B1 (de) 1987-02-25

Family

ID=9288564

Family Applications (1)

Application Number Title Priority Date Filing Date
EP84104678A Expired EP0124082B1 (de) 1983-05-03 1984-04-26 Gewebebahn, insbesondere für Papiermaschinen

Country Status (5)

Country Link
EP (1) EP0124082B1 (de)
AT (1) ATE25533T1 (de)
DE (1) DE3462411D1 (de)
FI (1) FI78139C (de)
FR (1) FR2545513B1 (de)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB8519706D0 (en) * 1985-08-06 1985-09-11 Scapa Porritt Ltd Papermachine &c clothing

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1518096A (fr) * 1966-03-11 1968-03-22 J J Marx G M B H Procédé de liaison sans fin de courroies et bandes, en particulier pour feutres etétamines de machines à papier
DE2064085A1 (en) * 1970-12-28 1972-07-13 Württembergische Filztuchfabrik D. Geschmay GmbH, 7320 Göppingen Splicing of fabric ends - particularly multilayer papermaking dryer fabrics
US4103717A (en) * 1976-06-18 1978-08-01 William Kenyon & Sons, Inc. Seam webbing
US4250822A (en) * 1979-12-06 1981-02-17 Asten Group, Inc. Low bulk, pin-type seam for use in paper making equipment fabrics, such as dryer felts
US4315049A (en) * 1979-12-06 1982-02-09 Asten Group, Incorporated Stitchless low bulk, pin-type seam for use in paper making equipment fabrics, such as dryer felts

Also Published As

Publication number Publication date
ATE25533T1 (de) 1987-03-15
FI841677A (fi) 1984-11-04
FR2545513A1 (fr) 1984-11-09
EP0124082A1 (de) 1984-11-07
FI78139B (fi) 1989-02-28
FI841677A0 (fi) 1984-04-27
FR2545513B1 (fr) 1985-07-05
DE3462411D1 (en) 1987-04-02
FI78139C (fi) 1989-06-12

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