EP1738020B1 - Sieb, insbesondere papiermaschinensieb - Google Patents

Sieb, insbesondere papiermaschinensieb Download PDF

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Publication number
EP1738020B1
EP1738020B1 EP05701331A EP05701331A EP1738020B1 EP 1738020 B1 EP1738020 B1 EP 1738020B1 EP 05701331 A EP05701331 A EP 05701331A EP 05701331 A EP05701331 A EP 05701331A EP 1738020 B1 EP1738020 B1 EP 1738020B1
Authority
EP
European Patent Office
Prior art keywords
threads
machine direction
thread
mesh
binding
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.)
Active
Application number
EP05701331A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP1738020A1 (de
Inventor
Wolfgang Heger
Klaus Fichter
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.)
Andritz Technology and Asset Management GmbH
Original Assignee
Andreas Kufferath 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 Andreas Kufferath GmbH and Co KG filed Critical Andreas Kufferath GmbH and Co KG
Priority to PL05701331T priority Critical patent/PL1738020T3/pl
Publication of EP1738020A1 publication Critical patent/EP1738020A1/de
Application granted granted Critical
Publication of EP1738020B1 publication Critical patent/EP1738020B1/de
Active legal-status Critical Current
Anticipated expiration legal-status Critical

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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
    • 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

Definitions

  • the invention relates to a screen, in particular a paper machine screen, comprising at least two layers of fabric, wherein an upper fabric layer is formed from MD yarns and from cross-direction yarns, wherein a lower fabric layer is formed from MD yarns and from cross-direction yarns, and such thread bridges are formed for the individual fabric layers. that these have a predeterminable Wegstrekke within a Bindungsrapportes no involvement with other threads.
  • the pulp suspension used here are mixtures of suitable fibers, fillers, chemical auxiliaries and water, which forms the predominant amount of the mixture.
  • the mentioned filtration process is also referred to in the paper industry with sheet formation and takes place in the so-called wet or sheet forming part of the paper machine.
  • gap or gap formers are used. These are characterized, inter alia, by the fact that the pulp suspension is injected directly into a gap between two paper machine sieves and dewatered by both sieves. With this type of paper machines, the filtration process could be accelerated so that today production speeds of 2000 m / min and more are possible.
  • Hygienic papers such as handkerchiefs, toilet paper, towels od.
  • the paper grades used here are characterized by particularly low basis weights, depending on the intended use between 10 and 20 g / m 2 lie.
  • graphic paper grades are between 42 and 120 g / m 2 .
  • EP 0 794 283 A1 such as DE 100 30 650 A1
  • the mentioned known solutions aim in most cases to connect a uniform paper page in the form of a two-shaft fabric, also known as plain weave, with a variety of running pages in a suitable manner.
  • a decreasing fiber retention is associated with the high drainage performance, since the long yarn bridges of the transverse yarns necessary for the retention are not available to a sufficient extent.
  • connection of two single-layer fabric to the papermaking fabric in which longer yarn bridges are formed by transverse yarns, is in the EP 0 889 160 A1 disclosed.
  • the paper side (upper side) is realized by a four-shaft twill weave and the running side (underside) by a four-shaft plain weave.
  • the connection between the two layers takes place by a connection of a paper-side machine direction yarn to a running-side transverse yarn.
  • This type of fabric is characterized by both a higher dewatering performance as well as a good fiber support due to the long thread bridges. In the known solution, it comes to a no longer acceptable mark, which is caused by the nature of the layer connection.
  • the wear potential is limited, ie the run or machine side, which is mainly formed by the machine direction threads is exposed directly to the wear and consequently it can in use Seam or sieve come. Further, the lateral bending stiffness is limited due to the four-shaft running side and a difficult to control automatic stitching caused by the parallel lower machine direction threads.
  • the invention is therefore based on the object, while maintaining the advantages of the known sieve solutions to further improve them to the effect that in particular in the field of production of tissue papers a very high dewatering performance and fiber support is given.
  • the fabric should be thin but nevertheless mechanically stable against waviness and warpage and still have good bending stiffness values in the transverse direction and ensure the possibility of an advantageous seaming for connecting the wire ends.
  • This object is achieved by a sieve, in particular a papermaking fabric, with the features of patent claim 1 in its entirety.
  • the yarn bridges of the upper transverse yarns within a binding repeat run at least over nine machine direction yarns and highest under a machine direction yarn that the Fadenbrükken the lower transverse yarns within the Bindungsrapportes at least below six and over at least two MD yarns, and that between two machine direction yarns, which run over a cross-direction yarn, at least one other machine direction yarn under the same cross-direction yarn, you always get on the top or paper side required for a good fiber support long yarn bridges of cross direction yarns, which in conjunction with the open chain and the required Permeability to the required high drainage performance guaranteed.
  • the long yarn bridges are advantageous in terms of high transverse bending stability of the wire.
  • the lower or running side guarantees a high stability with regard to diagonal distortion due to the double integration of the lower cross-direction threads.
  • the lower transverse yarns run under at least six machine direction yarns, high wear resistance is achieved in the paper machine.
  • the applied tension in the machine direction causes the two binding machine direction threads to move toward one another at the binding point, thereby additionally enlarging the open areas of the screen.
  • this increases the permeability and, on the other hand, the lower transverse thread is more strongly bent and protrudes further out of the lower or running side and can thus be "sanded off" to a greater extent in the paper machine.
  • the top and bottom are formed from the same number of machine direction threads, with no fixed assignment of individual machine direction threads to either side. The number of cross-direction threads is higher on the top or paper side than on the bottom or side.
  • connection of the two layers of fabric together can be done in different ways, for example in the form of the use of additional binding threads that can be configured as cross-direction threads or machine direction threads.
  • Another possibility of the connection is the so-called integral connection with the help of the existing bindings own Threads, also called structural threads, such as machine direction thread or cross-direction thread, which may be formed both as a connection and as an exchange of two adjacent threads or thread systems.
  • the screen in the form of a paper machine screen shown in FIGS. 1a, 1b, 1c realizes the fabric according to the invention with a ratio of the transverse direction threads from upper side (121 to 130) to lower side (141 to 145) of 2: 1 and a connection of the two fabric layers 1T and 1B by exchanging two directly adjacent machine direction threads 101 to 110 used as a functional pair.
  • the following machine direction threads are to be considered as pairs, 101, 102; 103, 104; 105, 106; 107,108 and 109 and 110. If the reference numbers have a superscript, that is, for example, 101 'instead of 101, this means that the following rapport is addressed.
  • the second exemplary embodiment according to FIGS. 2 a to 2 c relates to a paper machine screen according to the invention comparable to the embodiment described above, wherein a modified character of the paper side has been achieved such that it is only too small due to a changed arrangement of the binding sites of the machine direction yarns 201 to 210 on the upper side Markings in the paper is coming.
  • the ratio of the cross-direction threads from top side 121 to 130 to bottom side 141 to 145 is 2: 1, and the connection of fabric layers 2T and 2B is made by exchanging two directly adjacent machine direction threads 201 to 210 used as a functional pair consider the following machine direction yarns as pairs 201, 202; 203, 204; 205, 206; 207,208 and 209 as well as 210.
  • the fabric according to the invention is with a ratio of the transverse direction threads from upper side 321 to 335 to lower side 341 to 350 of 3: 2 and a connection of the two fabric layers 3T and 3B by connection of the upper machine direction threads 301 to 305 realized at the lower transverse direction threads 341 to 350.
  • the binding point is chosen so that it lies exactly between the binding points of the lower machine direction threads 306 to 310 and is thus protected against wear from the bottom.
  • the fourth exemplary embodiment according to FIGS. 4a, 4b, 4c shows the fabric according to the invention with a ratio of the transverse direction threads from top side 441 to 455 to bottom side 371 to 480 of 3: 2 and a connection of the two fabric layers 4T and 4B by a separate binding thread 461 to 465, which is designed here as a cross-direction thread.
  • the diameter of the upper machine direction yarns may be equal to the diameter of the lower machine direction yarns; but it is also possible to choose the diameter of the upper machine direction yarns less than or equal to the diameter of the lower machine direction yarns.
  • the diameter of the upper cross-direction threads may be smaller than that of the lower cross-direction threads. Insofar as machine direction threads are addressed in the application text, these represent the so-called warp threads of the fabric and the machine transverse direction threads are the so-called weft threads. If the flexural rigidity of the screen is addressed in the transverse direction, the transverse direction in the screens is perpendicular to them, for example perpendicularly along the line A-A in FIG. 1b. The machine direction can then be seen parallel to the line A - A in Figure 1 b. It is also possible, in principle for the creation of the fabric, the machine direction threads with the machine transverse direction threads to exchange, if a special Webform should make this necessary.

Landscapes

  • Paper (AREA)
  • Woven Fabrics (AREA)
  • Component Parts Of Construction Machinery (AREA)
  • Crystals, And After-Treatments Of Crystals (AREA)
  • Ink Jet (AREA)
  • Nonwoven Fabrics (AREA)
EP05701331A 2004-03-30 2005-02-03 Sieb, insbesondere papiermaschinensieb Active EP1738020B1 (de)

Priority Applications (1)

Application Number Priority Date Filing Date Title
PL05701331T PL1738020T3 (pl) 2004-03-30 2005-02-03 Sito, zwłaszcza sito maszyny papierniczej

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102004016640A DE102004016640B3 (de) 2004-03-30 2004-03-30 Sieb, insbesondere Papiermaschinensieb
PCT/EP2005/001070 WO2005106115A1 (de) 2004-03-30 2005-02-03 Sieb, insbesondere papiermaschinensieb

Publications (2)

Publication Number Publication Date
EP1738020A1 EP1738020A1 (de) 2007-01-03
EP1738020B1 true EP1738020B1 (de) 2007-07-18

Family

ID=34745463

Family Applications (1)

Application Number Title Priority Date Filing Date
EP05701331A Active EP1738020B1 (de) 2004-03-30 2005-02-03 Sieb, insbesondere papiermaschinensieb

Country Status (12)

Country Link
US (1) US7585394B2 (pt)
EP (1) EP1738020B1 (pt)
JP (1) JP4874952B2 (pt)
KR (1) KR101161336B1 (pt)
CN (1) CN1930342B (pt)
AT (1) ATE367478T1 (pt)
BR (1) BRPI0509295B1 (pt)
DE (2) DE102004016640B3 (pt)
ES (1) ES2287895T3 (pt)
MX (1) MXPA06011075A (pt)
PL (1) PL1738020T3 (pt)
WO (1) WO2005106115A1 (pt)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US8196613B2 (en) * 2009-02-25 2012-06-12 Kevin John Ward Multi-layer papermaker's forming fabric with paired MD binding yarns
EP2230352B1 (en) 2009-03-20 2012-10-03 Heimbach GmbH & Co.KG Woven fabric band for circulation in a machine
DE102010017055A1 (de) * 2010-05-21 2011-11-24 Andritz Technology And Asset Management Gmbh Blattbildungssieb
JP6192945B2 (ja) * 2013-01-24 2017-09-06 イチカワ株式会社 抄紙用プレスフェルト
EP2899311B1 (en) 2014-01-28 2016-01-13 Heimbach GmbH & Co. KG Paper maker fabric

Family Cites Families (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4359069A (en) * 1980-08-28 1982-11-16 Albany International Corp. Low density multilayer papermaking fabric
SE430425C (sv) * 1981-06-23 1986-09-19 Nordiskafilt Ab Formeringsvira for pappers-, cellulosa- eller liknande maskiner
DE3305713C1 (de) * 1983-02-18 1984-04-19 Hermann Wangner Gmbh & Co Kg, 7410 Reutlingen Verbund-Gewebe als Bespannung fuer den Blattbildungsteil einer Papiermaschine
US4749214A (en) 1985-09-17 1988-06-07 John T. Hoskins Quick connect fluid coupling
DE3823085A1 (de) * 1988-07-07 1990-01-11 Oberdorfer Fa F Doppelgewebe als siebgewebe fuer die nasspartie einer papiermaschine
DE3938159A1 (de) * 1989-11-16 1991-05-23 Oberdorfer Fa F Verbundgewebe fuer papiermaschinensiebe
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
GB9604602D0 (en) * 1996-03-04 1996-05-01 Jwi Ltd Composite papermaking fabric with paired weft binder yarns
US5743571A (en) 1997-02-18 1998-04-28 Seawin, Inc. Fitting with floating tube support and method of manufacture
ES2192240T3 (es) * 1997-07-02 2003-10-01 Kufferath Andreas Gmbh Tamiz para maquina de papel.
US5881764A (en) * 1997-08-01 1999-03-16 Weavexx Corporation Multi-layer forming fabric with stitching yarn pairs integrated into papermaking surface
US6227256B1 (en) * 1999-12-13 2001-05-08 Albany International Corp. Multi-layer papermaking fabric having long weft floats on its support and machine surfaces
DE10030650C1 (de) * 2000-06-29 2002-05-29 Kufferath Andreas Gmbh Papiermaschinensieb
DE10123204C2 (de) * 2001-05-12 2003-03-27 Kufferath Andreas Gmbh Papiermaschinensieb

Also Published As

Publication number Publication date
DE502005001077D1 (de) 2007-08-30
BRPI0509295B1 (pt) 2015-02-03
CN1930342A (zh) 2007-03-14
KR20070004004A (ko) 2007-01-05
PL1738020T3 (pl) 2007-11-30
JP2007535619A (ja) 2007-12-06
US7585394B2 (en) 2009-09-08
JP4874952B2 (ja) 2012-02-15
WO2005106115A1 (de) 2005-11-10
DE102004016640B3 (de) 2005-08-11
ES2287895T3 (es) 2007-12-16
KR101161336B1 (ko) 2012-07-06
CN1930342B (zh) 2010-06-02
MXPA06011075A (es) 2007-03-15
BRPI0509295A (pt) 2007-09-18
ATE367478T1 (de) 2007-08-15
US20070125911A1 (en) 2007-06-07
EP1738020A1 (de) 2007-01-03

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