EP0120337B1 - Toile pour machine à papier dans une texture de tissu ne présentant aucun axe de symétrie longitudinal - Google Patents

Toile pour machine à papier dans une texture de tissu ne présentant aucun axe de symétrie longitudinal Download PDF

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Publication number
EP0120337B1
EP0120337B1 EP84102169A EP84102169A EP0120337B1 EP 0120337 B1 EP0120337 B1 EP 0120337B1 EP 84102169 A EP84102169 A EP 84102169A EP 84102169 A EP84102169 A EP 84102169A EP 0120337 B1 EP0120337 B1 EP 0120337B1
Authority
EP
European Patent Office
Prior art keywords
weave
fabric
paper machine
wires
longitudinal
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
EP84102169A
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German (de)
English (en)
Other versions
EP0120337A1 (fr
Inventor
Georg Dipl.-Ing. Borel
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
Family has litigation
First worldwide family litigation filed litigation Critical https://patents.darts-ip.com/?family=6192168&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=EP0120337(B1) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Application filed by Herman Wangner GmbH and Co KG filed Critical Herman Wangner GmbH and Co KG
Publication of EP0120337A1 publication Critical patent/EP0120337A1/fr
Application granted granted Critical
Publication of EP0120337B1 publication Critical patent/EP0120337B1/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
    • 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
    • Y10S162/903—Paper forming member, e.g. fourdrinier, sheet forming member

Definitions

  • the invention relates to a paper machine clothing made of interwoven longitudinal and transverse threads, the weave pattern forming the weave not having an axis of symmetry running in the longitudinal direction.
  • Atlas bindings are slightly better in this regard, since the asymmetry is less.
  • single-layer, 5-strand atlas sieves can be operated without problems, and with double-layer fabrics, which are known to have a high degree of filling of 100-115% of the warp wires. sieves with 7 to 12 strings are used.
  • 7-binding bindings occur on high-speed paper machines with a working speed of 900 m / min. and more regulation problems because the screen moves sideways in the direction the diagonal is pointing.
  • Warping in the diagonal direction of a paper machine wire with asymmetrical weave patterns is known. Use has already been made of this in order to prevent the suction pad surface from grooving (groove-shaped removal of the support surface) in the case of a chain runner screen. By weaving the sieve alternately with the left diagonal and the right diagonal, the warp wires have a zigzag shape, which avoids the above-mentioned grooving of the suction pad (DE-B-1 710 373).
  • Symmetrical weave patterns are in particular plain weave and four-twill cross-twill weave. Unsymmetrical weave patterns are all basic twill weaves and satin weaves. In the present case, a weave pattern would also be called symmetrical if the symmetry only arises after a displacement in the longitudinal direction, as is the case with the four-twill cross-twill weave.
  • the paper machine clothing according to the invention may only be used in a certain running direction, since the opposite effect would also occur in the opposite running direction, ie. H. the sieve would converge towards the middle.
  • the basic idea of the invention is applicable to single-layer as well as double-layer and two-layer or multi-layer composite fabrics.
  • all or only some of the layers can be designed according to the invention.
  • only the lower layer needs to be equipped with a V-shaped diagonal and with correction wires, since the upper layer has a binding pattern with an axis of symmetry running in the longitudinal direction anyway.
  • the invention is applicable both to flat weaving of paper machine clothing to be sewn retrospectively and to circular weaving.
  • the execution is for circular weaving simplified the fact that the first half of the screen z. B. can be woven in right diagonal weave, if the corrective longitudinal wires (weft wires) are pulled through, the weave pattern is changed accordingly, so that the long floats of the transverse wires (warp wires) are shortened and then the weaving of the second half of the sieve with the weaving cartridge with the opposite Diagonal direction, here left diagonal, is woven.
  • Fig. 1 is an illustration of a section of the running side of a paper machine screen with four twill weave.
  • the cutout comprises part of the left half 1 and the right halves 2 of the paper machine screen, so that the center line can be seen.
  • the path consists of warp wires 3 and weft wires 4.
  • a correction warp wire 5 is also woven.
  • the paper machine sieve has three weft floats on the running side, so it is a so-called weft runner. While the normal warp wires 3 have only short floats corresponding to a weft wire 4 on the running side, the correction warp wire 5 has longer floats comprising two weft wires 4.
  • FIG. 1 a shows in section in the longitudinal direction the course of the normal warp wires 3 or that of the correction warp wires 5.
  • Fig. 2 shows the running side of a paper machine screen. Similar to that of Fig. 1, but with two correction wires 5, between which a normal warp wire 3 is located. In addition to the normal binding points, the correction warp wires have 8 additional binding points 9 around the weft wire 10 to be shortened.
  • FIGS. 3 to 8 relate to a double-layer, 7-shaft fabric, with FIGS. 3 and 4 showing the paper side in a lifelike or schematic representation.
  • the normal length of the weft floats is 4 warp wires. Only the weft wire 11 has a float that is longer by one warp wire. This small irregularity is not disturbing and can be compensated for by slightly grinding the screen, so that additional weaving in of a correction warp wire is not necessary to shorten this weft floatation.
  • FIGS. 6 and 8 show a representation similar to that of FIGS. 5 and 7, but with correction warp wires 5 to shorten the excessively long weft floats.
  • the correction warp wires 5 are normal warp wires 3 with additional binding points, which are highlighted in FIG. 8 by a cross in the binding point squares.
  • FIG. 6a The course of the normal warp wires 3 and the correction warp wires 5 is shown in FIG. 6a. It can be seen from this that the correction warp wires 5 on the paper side have the same course as the normal warp wires 3 and only on the running side, instead of only tying a weft wire (binding point 12), are tied with a further weft wire (binding point 13).

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  • Paper (AREA)

Claims (2)

1. Habillage pour machine à papier, en fils longitudinaux et transversaux entrelacés les uns dans les autres, dans lequel le dessin de liage formant le tissu ne présente aucun axe de symétrie courant dans le sens longitudinal, caractérisé en ce que le dessin de liage est symétrique dans les deux moitiés du tissu séparées par l'axe central courant dans le sens longitudinal, et que les points de liage forment un dessin en V dans le tissu, avec une diagonale de liage passant par le milieu du tissu.
2. Habillage pour machine à papier selon la revendication 1. caractérisé en ce qu'un ou plusieurs fils longitudinaux sont insérés le long de l'axe central de telle sorte que, sur le côté roulement, il n'y ait aucun flotté des fils transversaux qui soit nettement plus long que les flottés des fils transversaux apparaissant dans l'armure considérée.
EP84102169A 1983-03-01 1984-03-01 Toile pour machine à papier dans une texture de tissu ne présentant aucun axe de symétrie longitudinal Expired EP0120337B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3307144 1983-03-01
DE19833307144 DE3307144A1 (de) 1983-03-01 1983-03-01 Papiermaschinenbespannung in einer gewebebindung, die keine in laengsrichtung verlaufenden symmetrieachse aufweist

Publications (2)

Publication Number Publication Date
EP0120337A1 EP0120337A1 (fr) 1984-10-03
EP0120337B1 true EP0120337B1 (fr) 1987-05-06

Family

ID=6192168

Family Applications (1)

Application Number Title Priority Date Filing Date
EP84102169A Expired EP0120337B1 (fr) 1983-03-01 1984-03-01 Toile pour machine à papier dans une texture de tissu ne présentant aucun axe de symétrie longitudinal

Country Status (3)

Country Link
US (1) US4592395A (fr)
EP (1) EP0120337B1 (fr)
DE (2) DE3307144A1 (fr)

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US7243687B2 (en) * 2004-06-07 2007-07-17 Weavexx Corporation Papermaker's forming fabric with twice as many bottom MD yarns as top MD yarns
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Also Published As

Publication number Publication date
DE3463533D1 (en) 1987-06-11
US4592395A (en) 1986-06-03
DE3307144A1 (de) 1984-09-13
EP0120337A1 (fr) 1984-10-03

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