EP0263482B1 - Bespannung für den Blattbildungsteil einer Papiermaschine - Google Patents

Bespannung für den Blattbildungsteil einer Papiermaschine Download PDF

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Publication number
EP0263482B1
EP0263482B1 EP19870114565 EP87114565A EP0263482B1 EP 0263482 B1 EP0263482 B1 EP 0263482B1 EP 19870114565 EP19870114565 EP 19870114565 EP 87114565 A EP87114565 A EP 87114565A EP 0263482 B1 EP0263482 B1 EP 0263482B1
Authority
EP
European Patent Office
Prior art keywords
transverse threads
threads
additional
fabric
paper side
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
EP19870114565
Other languages
German (de)
English (en)
French (fr)
Other versions
EP0263482A1 (de
Inventor
Georg Dip.-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
Application filed by Herman Wangner GmbH and Co KG filed Critical Herman Wangner GmbH and Co KG
Priority to AT87114565T priority Critical patent/ATE62946T1/de
Publication of EP0263482A1 publication Critical patent/EP0263482A1/de
Application granted granted Critical
Publication of EP0263482B1 publication Critical patent/EP0263482B1/de
Anticipated expiration legal-status Critical
Expired - Lifetime 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
    • 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
    • Y10T442/00—Fabric [woven, knitted, or nonwoven textile or cloth, etc.]
    • Y10T442/30—Woven fabric [i.e., woven strand or strip material]
    • Y10T442/3179—Woven fabric is characterized by a particular or differential weave other than fabric in which the strand denier or warp/weft pick count is specified
    • Y10T442/3195—Three-dimensional weave [e.g., x-y-z planes, multi-planar warps and/or wefts, etc.]
    • Y10T442/3203—Multi-planar warp layers

Definitions

  • the invention relates to a covering for the sheet-forming part of a paper machine with a double-layer or multi-layer fabric made of interwoven longitudinal threads and transverse threads and with additional transverse threads floating on the paper side.
  • the additional sheet threads floating on the paper side are said to improve sheet removal, reduce the risk of marking and increase permeability.
  • the additional transverse threads are woven in such a way that they are bent as little as possible. As a result, however, they protrude so far on the paper side that they interfere with sheet formation. When cleaning the fabric by high pressure water jets protruding threads are often destroyed.
  • the invention has for its object to provide a covering of the type mentioned for the sheet formation area of a paper machine, in which the risk of destruction of transverse threads is reduced when cleaning with high pressure water jets.
  • the additional floating cross threads are preferably tied so deep that their entire cross-section at the tying point is lower than the normal cross threads involved in the formation of the paper side at its deepest point.
  • a prerequisite for the deep integration of the additional transverse threads is generally that the additional transverse thread is wrapped in a longitudinal thread in the sense that at least some of the longitudinal threads incorporating the additional transverse threads run under one or both of the adjacent transverse threads on the paper side.
  • the additional floating floating threads preferably consist of a particularly soft, stretchy material.
  • the covering can be flat or endlessly woven.
  • the threads consist of plastic monofilaments, a material with a higher modulus of elasticity being generally chosen for the longitudinal threads than for the transverse threads.
  • the threads can also consist of plastic multifilaments, in particular in the case of an endless weave.
  • the additional floating cross threads preferably have a smaller diameter than the normal cross threads.
  • Fig. 1 shows in cross section a double-layer, eight-shaft fabric.
  • a double-layer fabric is understood to be a fabric that contains two layers of transverse threads that are interwoven with a single system of longitudinal threads.
  • the top or paper side of the fabric is formed by interwoven longitudinal threads 1 and upper transverse threads 2.
  • a lower transverse thread 5 is assigned to each upper transverse thread 2, so that the transverse threads are arranged in pairs.
  • the longitudinal threads 1 are also interwoven with the lower transverse threads 5.
  • the lower transverse threads 5 have very long floats which project downwards and form the running side of the paper machine clothing. Since the lower transverse threads 5 are particularly strongly exposed to abrasion, they expediently have a larger diameter than the upper transverse threads 2 and in some cases consist of a particularly abrasion-resistant material, for example polyamide and polyester in alternation.
  • the longitudinal threads 1 bind both with the upper transverse threads 2 and with the lower transverse threads 5, they run partly on the paper side and partly on the running side of the fabric. Between the points at which the longitudinal threads 1 are interwoven with the upper and lower transverse threads 2 and 5, they also tie additional transverse threads 3.
  • the transverse threads 3 run, apart from the binding points with the longitudinal threads 1, on the paper side of the fabric. They form long floats.
  • FIG. 1 has an eight-part weave, with each weave repeat containing eight longitudinal threads and sixteen normal transverse threads 2, 5 and eight additional transverse threads 3.
  • the floats of the additional transverse threads 3 extend over six longitudinal threads 1.
  • the additional transverse thread 3 which is deeply embedded in the fabric, is pressed out laterally from the middle of the stitch. In the embodiment of FIG. 2, this is prevented by the additional transverse thread 3 being looped around by two longitudinal threads 1 at each of its binding points. The float of the transverse threads 3 extends over five longitudinal threads 1 in each case.
  • the base fabric ie the weave pattern of the longitudinal threads 1 and the upper and lower transverse threads 2, 5 has a seven-strand structure.
  • the additional transverse threads 3 are, however, only interwoven with every fourteenth longitudinal thread 1, ie they are only tied in every second repeat of the base fabric.
  • FIG. 4 corresponds to that of FIG. 3 with regard to the base fabric.
  • the additional transverse threads 3 have floats of alternating four and six longitudinal threads 1.
  • the non-uniform length of the floats of the additional transverse threads 3 improves the marking properties.
  • the non-uniform length of the floatations results from the fact that the additional transverse threads 3 alternately bind with different longitudinal threads 1, e.g. alternating with the first and the second longitudinal thread of a repeat.
  • Examples 1 and 2 below relate to an openly woven covering for the sheet-forming part of a paper machine, so that the longitudinal threads are formed by the warp and the transverse threads by the weft.
  • the base fabric is double-layered in an eight-part weave.
  • Warp run The warp wire 1 is passed over two weft pairs 2, 5, then between two weft pairs 2, 5, under one weft pair 2, 5 and finally between three weft pairs 2, 5, comes again on the paper side and repeats the repeat (see Fig. 6).
  • the floats of chain 1 on the paper side have an octagonal Atlas distribution (see Fig. 5).
  • the fabric was woven with a warp density of 38 wires / cm. After fixing, the warp count is compressed to 42 wires / cm by the cross shrinkage of the fabric.
  • the chain is made of monofilament polyester, ⁇ 0.30 mm.
  • the material is longitudinally stable, i.e. it has a high modulus of elasticity.
  • the weft wires of the top layer have a density of 14 wires / cm when weaving. After fixing it has that Fabric 13.5 weft wires / cm.
  • the shot diameter is 0.30 mm.
  • the weft wires 5 of the barrel side are woven so that they lie precisely under the weft wires 2 of the upper layer.
  • they are polyester monofilament, ⁇ 0.32 mm, of the same type as the weft of the upper layer and made of polyamide monofilament, also ⁇ 0.32 mm of type Pa 6.6.
  • weft wires 3 made of polyester monofilament, ⁇ 0.15 mm, of the same soft Trevira 900 wire type as the other weft wires are woven into the upper layer.
  • the course of the additional weft wire 3 corresponds to Figure 1, i.e. the additional weft runs over six warp wires 1 and under two warp wires 1.
  • the additional weft wire 3 lies in the plane of the lower weft wires 5.
  • the fixed fabric has an elongation of 0.6% under a load of 100 N / cm and an air permeability of 8000 m3 / m2 / h.
  • the warp floats and the floats of the normal weft wire 2 and the additional weft 3 lie in one plane.
  • the weft wires 5 are 15.5 / 100 mm deeper than the warp bend. This means that the fabric is a weft runner. Only when 15.5 / 100 mm thickness is used does the bottom part of the warp threads come into contact with the paper machine for the first time. This means that the warp threads start to wear at this point.
  • FIG. 1 shows, the tying point of the additional weft 3 is hidden so far inside the screen that the additional weft is not touched by the abrasion, even though it has been tied down low.
  • This octagonal double-layer sieve is used for the production of cardboard. Because of the high retention capacity, the sieve is also advantageous for the production of packaging paper and similar heavyweight types of paper for the packaging sector.
  • the fabric has 14 shafts and the chain 1 runs over two weft pairs 2, 5 between one weft pair 2, 5, under one weft pair 2, 5 and between three weft pairs 2, 5.
  • the paper side has 7-strand satin distribution of the warp floats. With warp 1, 54 wires / cm are counted during weaving, after heat-setting it is 60 wires / cm.
  • the warp wires are made of polyester monofilament, ⁇ 0.17 mm, and are made of longitudinally stable wire quality with a high modulus of elasticity.
  • the weft wires 2 of the upper layer are made of polyester monofilament, ⁇ 0.17 mm, type Trevira 901, and have a medium modulus of elasticity (elongation 19% at a load of 27 cN / tex). 19 weft wires / cm are woven, in the finished sieve 17.5 cm normal weft wires are counted.
  • the sieve On the running side, the sieve has 19 weft wires 5, ⁇ 0.20 mm, half made of polyester, soft quality Type 900 (23.4% elongation at a load of 27 cN / tex), the other half made of polyamide Type 6.6 .
  • an additional weft with a 14-strand wire course according to FIG. 3 is woven.
  • the additional shot is also made of polyester, the soft type 900, and has a diameter of 0.12 mm.
  • the structure of the basic fabric is actually 7 shafts, the additional weft wires are not bound by the chain after every 7 shafts repeat, but only after every 14th warp wire.
  • the warp wires, the weft wires and the additional weft wires are all in one plane.
  • the weft is 9/100 mm lower in relation to the chain, i.e. the sieve is a weft runner.
  • the screen according to example 2 has a finely structured surface structure, it is mainly used for marking-sensitive writing and printing papers.

Landscapes

  • Paper (AREA)
  • Woven Fabrics (AREA)
  • Materials For Medical Uses (AREA)
  • Cartons (AREA)
  • Packaging Of Special Articles (AREA)
  • Pretreatment Of Seeds And Plants (AREA)
EP19870114565 1986-10-07 1987-10-06 Bespannung für den Blattbildungsteil einer Papiermaschine Expired - Lifetime EP0263482B1 (de)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT87114565T ATE62946T1 (de) 1986-10-07 1987-10-06 Bespannung fuer den blattbildungsteil einer papiermaschine.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19863634134 DE3634134A1 (de) 1986-10-07 1986-10-07 Bespannung fuer den blattbildungsteil einer papiermaschine
DE3634134 1986-10-07

Publications (2)

Publication Number Publication Date
EP0263482A1 EP0263482A1 (de) 1988-04-13
EP0263482B1 true EP0263482B1 (de) 1991-04-24

Family

ID=6311231

Family Applications (1)

Application Number Title Priority Date Filing Date
EP19870114565 Expired - Lifetime EP0263482B1 (de) 1986-10-07 1987-10-06 Bespannung für den Blattbildungsteil einer Papiermaschine

Country Status (9)

Country Link
US (1) US4928737A (fi)
EP (1) EP0263482B1 (fi)
JP (1) JPH07122229B2 (fi)
AT (1) ATE62946T1 (fi)
BR (1) BR8704907A (fi)
CA (1) CA1279234C (fi)
DE (2) DE3634134A1 (fi)
ES (1) ES2021667B3 (fi)
FI (1) FI87667C (fi)

Families Citing this family (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3817144A1 (de) * 1988-05-19 1989-11-30 Wangner Gmbh Co Kg Hermann Doppellagige bespannung fuer den blattbildungsbereich einer papiermaschine
DE3903198C2 (de) * 1989-02-03 1999-11-18 Kufferath Andreas Gmbh Mehrlagiges Siebgewebe einer Papiermaschine
US5052448A (en) * 1989-02-10 1991-10-01 Huyck Corporation Self stitching multilayer papermaking fabric
JPH0748719Y2 (ja) * 1989-03-31 1995-11-08 日本フエルト株式会社 圧力斑の少ないプレスフエルト
US5158117A (en) * 1991-07-30 1992-10-27 Tamfelt Oy Ab Two-layer paper machine cloth
US5214809A (en) * 1992-06-29 1993-06-01 Paul Stuart Articulated mattress for adjustable bed
JP3444373B2 (ja) * 1994-03-18 2003-09-08 日本フイルコン株式会社 製紙面側織物に補助緯糸を配置した経糸２重緯糸２重製紙用織物
US7300554B2 (en) * 2003-09-11 2007-11-27 Albany International Corp. Textured surface of a tissue forming fabric to generate bulk, cross directional tensile, absorbency, and softness in a sheet of paper
US20060219313A1 (en) * 2005-03-31 2006-10-05 Hippolit Gstrein Papermaker's press felt with long machine direction floats in base fabric
US20090183795A1 (en) * 2008-01-23 2009-07-23 Kevin John Ward Multi-Layer Papermaker's Forming Fabric With Long Machine Side MD Floats
PT2230352E (pt) * 2009-03-20 2012-12-05 Heimbach Gmbh & Co Kg Faixa em tecido para circulação numa máquina
PT2584091E (pt) 2011-10-22 2014-05-27 Heimbach Gmbh & Co Kg Tecido de fabricante de papel tecido, em particular uma tela de formação
JP2017089022A (ja) * 2015-11-04 2017-05-25 日本フイルコン株式会社 工業用二層織物

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1572905A (en) * 1976-08-10 1980-08-06 Scapa Porritt Ltd Papermakers fabrics
US4314589A (en) * 1978-10-23 1982-02-09 Jwi Ltd. Duplex forming fabric
DE3036409C2 (de) * 1980-09-26 1983-01-20 Hermann Wangner Gmbh & Co Kg, 7410 Reutlingen Doppellagiges Sieb für den Siebteil einer Papiermaschine
US4423755A (en) * 1982-01-22 1984-01-03 Huyck Corporation Papermakers' fabric
JPS5942117A (ja) * 1982-08-31 1984-03-08 Hitachi Cable Ltd 放電加工用複合電極線の製造方法
US4564051A (en) * 1983-07-16 1986-01-14 Andreas Kufferath Gmbh & Co. Kg Multiple ply dewatering screen particularly for a web forming part of a paper making machine
DE3329739C1 (de) * 1983-08-17 1985-01-10 Hermann Wangner Gmbh & Co Kg, 7410 Reutlingen Mehrlagige Bespannung fuer Papiermaschinen
JPS61289195A (ja) * 1985-06-17 1986-12-19 日本フイルコン株式会社 製紙用２重織物
JPS62206095A (ja) * 1986-03-05 1987-09-10 日本フィルコン株式会社 製紙用織物

Also Published As

Publication number Publication date
ATE62946T1 (de) 1991-05-15
JPS6399393A (ja) 1988-04-30
BR8704907A (pt) 1988-05-24
FI87667B (fi) 1992-10-30
ES2021667B3 (es) 1991-11-16
FI874341A0 (fi) 1987-10-02
US4928737A (en) 1990-05-29
DE3769573D1 (de) 1991-05-29
JPH07122229B2 (ja) 1995-12-25
DE3634134A1 (de) 1988-04-21
CA1279234C (en) 1991-01-22
FI87667C (fi) 1993-12-08
FI874341A (fi) 1988-04-08
EP0263482A1 (de) 1988-04-13

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