EP0120337A1 - 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
EP0120337A1
EP0120337A1 EP84102169A EP84102169A EP0120337A1 EP 0120337 A1 EP0120337 A1 EP 0120337A1 EP 84102169 A EP84102169 A EP 84102169A EP 84102169 A EP84102169 A EP 84102169A EP 0120337 A1 EP0120337 A1 EP 0120337A1
Authority
EP
European Patent Office
Prior art keywords
paper machine
weave
fabric
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.)
Granted
Application number
EP84102169A
Other languages
German (de)
English (en)
Other versions
EP0120337B1 (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(A1) "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 comprising interwoven longitudinal and transverse threads, the weave not having an axis of symmetry running in the longitudinal direction and the weave in a first area being mirror-symmetrical to that in a second area.
  • Marking is less noticeable, but the asymmetrical binding structure is retained and has a greater impact the more asymmetrical the binding points of successive wires are.
  • Atlas bindings are slightly better in this regard, since the asymmetry is less.
  • Single-layer, 5-strand atlas sieves can be operated without any problems, and sieves with 7 to 12-strand weave are used for double-layer fabrics, which are known to have a high degree of filling of 100 - 115% of the warp wires.
  • 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.
  • the fabric is woven with a right diagonal, so the screen warps in the opposite direction with all the related problems for the papermaker.
  • the construction of the paper machine in the upper sieve strand is so unfavorable that no mechanical action can be taken to counteract this warping of the sieve.
  • the screen guide rollers can only be offset on one side in the return line so that the screen is brought back to the center.
  • the invention has for its object to provide a paper machine clothing from a fabric, the binding on the one hand does not have a longitudinal axis of symmetry, but on the other hand does not distort or distort in use.
  • the basic idea of the invention is not to produce the entire fabric in a single weave, but to achieve by varying the weave that those forces which try to distort the paper machine screen in one direction compensate each other.
  • the left half of the sieve or at least part of it is made with a binding that allows the sieve to run to the left, while the right half of the sieve or at least part of it is made with a binding that pulls the sieve to the right. Since the forces pulling to the right and to the left then cancel each other out, the paper machine clothing is running.
  • a positive side effect is that the paper machine clothing is simultaneously stretched somewhat in width by these forces.
  • Symmetrical weaves are in particular plain weave and four-twill cross twill weave.
  • Unsymmetrical bindings are all basic twill weaves and satin weaves. In the present case, a bond would also be referred to as 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.
  • correction warp wires are driven by additional harness frames. Since there are only 1 to 3 individual threads, the elaborate frame can also be dispensed with, and the actuation of these threads can be achieved using individual, individually driven, special strands. Since the correction warp threads have a course that is independent of the rest of the weave, they can tie off any weft threads that have a float that is too long on the running side, thereby preventing the weft floats from protruding from the sieve level on the running side.
  • the inventive paper machine clothing in the preferred embodiment with mutually mirror-image G ewebehbuckn in the manner made that the warp wires are drawn into the strands of the shaft frame in the usual half of a sieve.
  • the sieve feed is carried out in reverse order from the middle of the fabric.
  • a four-shaft fabric for. B. on the left with the sequence 1, 2, 3 and 4 and from the middle on the right in the sequence 4, 3, 2, 1.
  • the bonding points a V pattern in the fabric form, with breaking in the middle fabric B indungsdiagonale without additional shafts.
  • 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.
  • the invention is applicable to both the F laughing weave arrears seam forming paper machine clothing as well as the circular weaving applicable.
  • the embodiment of the invention is simplified in that the first half of the screen z. B. can be woven in right-hand diagonal weave, if the corrective longitudinal wires (weft wires) are pulled through, the weave 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 woven 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 impact point can be seen.
  • the fabric consists of warp wires 3 and weft wires 4. Between the left half 1 and the right half 2 there is also a correction tur warp wire 5 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.
  • F ig. la shows in section in the longitudinal direction the course of the normal warp wires 3 or that of the correction warp wires 5.
  • F ig. 2 shows the running side of a paper machine wire, similar to that of FIG. 1, but with two correction wires 5, between which a normal warp wire 3 lies.
  • 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.
  • FIG. 5 and 7 show the running side of the double-layer, 3 and 4, namely without correction warp wires in a true-to-life or schematic representation.
  • the circled numbers in FIG. 5 each indicate the length of the shot floats. Without correction wires, therefore, deviating from the normal float length corresponding to six warp wires, there are also those with a length of up to nine warp wires.
  • 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)
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 true EP0120337A1 (fr) 1984-10-03
EP0120337B1 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)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP3372714A1 (fr) * 2017-03-06 2018-09-12 A. Haberkorn & Co GmbH Tissu circulaire structuré

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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
US5983953A (en) * 1994-09-16 1999-11-16 Weavexx Corporation Paper forming progess
US5518042A (en) * 1994-09-16 1996-05-21 Huyck Licensco, Inc. Papermaker's forming fabric with additional cross machine direction locator and fiber supporting yarns
US5709250A (en) * 1994-09-16 1998-01-20 Weavexx Corporation Papermakers' forming fabric having additional fiber support yarns
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DE1710373B1 (de) 1966-04-30 1971-07-08 United Wire Ltd Endloses Papiermaschinensieb in Koeperbindung
EP0048962A2 (fr) * 1980-09-26 1982-04-07 Hermann Wangner GmbH & Co. KG Tamis double pour la section de transformation en feuille d'une machine à papier
DE3044762A1 (de) 1980-11-27 1982-05-27 Fa. F. Oberdorfer, 7920 Heidenheim Papiermachergewebe

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DE1710373B1 (de) 1966-04-30 1971-07-08 United Wire Ltd Endloses Papiermaschinensieb in Koeperbindung
EP0048962A2 (fr) * 1980-09-26 1982-04-07 Hermann Wangner GmbH & Co. KG Tamis double pour la section de transformation en feuille d'une machine à papier
DE3044762A1 (de) 1980-11-27 1982-05-27 Fa. F. Oberdorfer, 7920 Heidenheim Papiermachergewebe

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP3372714A1 (fr) * 2017-03-06 2018-09-12 A. Haberkorn & Co GmbH Tissu circulaire structuré

Also Published As

Publication number Publication date
DE3307144A1 (de) 1984-09-13
DE3463533D1 (en) 1987-06-11
EP0120337B1 (fr) 1987-05-06
US4592395A (en) 1986-06-03

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