EP1637651A1 - Machine pour fabriquer une bande de matière fibreuse - Google Patents

Machine pour fabriquer une bande de matière fibreuse Download PDF

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Publication number
EP1637651A1
EP1637651A1 EP05106906A EP05106906A EP1637651A1 EP 1637651 A1 EP1637651 A1 EP 1637651A1 EP 05106906 A EP05106906 A EP 05106906A EP 05106906 A EP05106906 A EP 05106906A EP 1637651 A1 EP1637651 A1 EP 1637651A1
Authority
EP
European Patent Office
Prior art keywords
wire
support
less
fibrous web
gapformer
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.)
Withdrawn
Application number
EP05106906A
Other languages
German (de)
English (en)
Inventor
Scott D. Quigley
Martin Serr
Lena Johansson
Volker Schmidt-Rohr
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.)
Voith Patent GmbH
Original Assignee
Voith Patent GmbH
Voith Fabrics Patent GmbH
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 Voith Patent GmbH, Voith Fabrics Patent GmbH filed Critical Voith Patent GmbH
Publication of EP1637651A1 publication Critical patent/EP1637651A1/fr
Withdrawn legal-status Critical Current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
    • D21F9/00—Complete machines for making continuous webs of paper
    • D21F9/003—Complete machines for making continuous webs of paper of the twin-wire type

Definitions

  • the invention relates to a gap former (gap former) for forming a fibrous web from a fed via a headbox fibrous web with a top wire and a support or bottom wire.
  • this object is achieved in a machine of the type mentioned above in that the support screen has a greater thickness than the top wire.
  • sieves are used which, compared to sieves known from the prior art, cause less mist formation in the outlet gap of the sieves. This is particularly significant at speeds in excess of 1550 m / min.
  • the invention can improve the print quality of the paper. It is made a high quality paper web, which has no or little defects even at a high production speed.
  • a fabric which, in the case of the support fabric, has a thickness of 0.7 mm or less, and in the case of the upper fabric a thickness of 0.63 mm or less.
  • the fabric preferably has a void volume of 400 cm 3 / m 2 or less.
  • the invention also relates to the fact that the covering is advantageously usable as a support screen and has an open area of 32% or more, a void volume of 400 cm 3 / m 2 or less with an air permeability of between 360 and 400 cfm.
  • the air permeability is determined according to the TIP 044-20 standard by the TAPPI measurement method.
  • the open area contained in the fabric can be found in the following calculate empirically obtained term: ( 10 - ( Number of warp a ⁇ the / cm ⁇ Diameter of the warp a ⁇ the [ mm ] ) ⁇ ( 10 - ( Number of shots a ⁇ the / cm ⁇ Diameter of the weft a ⁇ the [ mm ] )
  • voids are present within the fabric.
  • Advantageous is an embodiment of the invention, according to which the number of voids within the fabric on the side facing the fibrous web is less than or equal to the number of voids on the side facing away from the fibrous web side.
  • the invention can be used both in a fabric covering and in a fabric reinforced membrane.
  • the invention also relates to a method for producing a fibrous web, in particular a paper web, which is suitable for gravure printing.
  • a fibrous web in particular a paper web, which is suitable for gravure printing.
  • at least one covering is used, as described above.
  • a fibrous web can be produced at a speed of more than 1550 m / min or more.
  • cloths according to the teaching of the invention are used for the lower or support screen and the upper screen.
  • a twin-wire former 1 (FIG. 1) comprises a support wire 2 and a top wire 3, between which a fibrous web is produced in a twin-wire section 4 from a pulp suspension fed into a headbox 5 into a fibrous web.
  • At the top wire 3 wraps a forming roller 6 with a suction zone 7, while the support wire 2 is guided over an opposite guide roller 8.
  • a suction device 9 with two suction zones 10, 11 is arranged in the region of the twin-wire section 4.
  • the suction device 9 are strips 12, 13, 14 opposite.
  • a suction device 15 with suction zones 16, 17 and 18 attached On the side of the upper wire 3, a suction device 15 with suction zones 16, 17 and 18 attached.
  • the support wire 2 is guided at the end of the twin-wire section 4 via a wire suction roller 19 with two suction zones 20, 21. Subsequently, the strainer 2 moves past two flat suction cups 22, 23. The upper wire 3 is continued via a deflection roller 24.
  • this or this surface may be ground off, in particular on the side facing the paper web.
  • a pulp suspension is fed through a headbox 25 to a twin-wire zone 26 formed between a support screen 27 and a top wire 28.
  • the headbox 25 is equipped with a plurality of zoned juxtaposed diaphragms 29 to influence the gap width profile.
  • a forming roller 31 provided with a suction region 30 is arranged in the region of the inlet gap of the head box 25.
  • the support screen 27 runs in the region of the exit of the fibrous web from the twin-wire zone 26 via a suction roller 34 equipped with stationary suction zones 32, 33.
  • the screens 27, 28 respectively run over deflection rollers 35, 36, 37, 38 and 39, 40, 41.
  • a suction box 42 movable and adjustable molding strips 43 are arranged.
  • a further suction box 44 is present in the twin-wire zone 26 .
  • a further suction box 45 is employed on the support screen 27.
  • coverings 2, 3; 27, 28 can also be used membranes, which are reinforced in particular by tissue.

Landscapes

  • Paper (AREA)
  • Treatment Of Fiber Materials (AREA)
EP05106906A 2004-09-15 2005-07-27 Machine pour fabriquer une bande de matière fibreuse Withdrawn EP1637651A1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE102004044570A DE102004044570A1 (de) 2004-09-15 2004-09-15 Maschine zur Herstellung einer Faserstoffbahn

Publications (1)

Publication Number Publication Date
EP1637651A1 true EP1637651A1 (fr) 2006-03-22

Family

ID=35429318

Family Applications (1)

Application Number Title Priority Date Filing Date
EP05106906A Withdrawn EP1637651A1 (fr) 2004-09-15 2005-07-27 Machine pour fabriquer une bande de matière fibreuse

Country Status (3)

Country Link
US (1) US20060060321A1 (fr)
EP (1) EP1637651A1 (fr)
DE (1) DE102004044570A1 (fr)

Families Citing this family (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7743795B2 (en) 2006-12-22 2010-06-29 Voith Patent Gmbh Forming fabric having binding weft yarns
US7604025B2 (en) * 2006-12-22 2009-10-20 Voith Patent Gmbh Forming fabric having offset binding warps
US7959764B2 (en) * 2007-06-13 2011-06-14 Voith Patent Gmbh Forming fabrics for fiber webs
US7879193B2 (en) * 2007-09-06 2011-02-01 Voith Patent Gmbh Structured forming fabric and method
US7879195B2 (en) * 2007-09-06 2011-02-01 Voith Patent Gmbh Structured forming fabric and method
US7879194B2 (en) * 2007-09-06 2011-02-01 Voith Patent Gmbh Structured forming fabric and method
US7861747B2 (en) * 2008-02-19 2011-01-04 Voith Patent Gmbh Forming fabric having exchanging and/or binding warp yarns
US7878224B2 (en) 2008-02-19 2011-02-01 Voith Patent Gmbh Forming fabric having binding warp yarns
US8002950B2 (en) * 2008-06-11 2011-08-23 Voith Patent Gmbh Structured fabric for papermaking and method
AT522459B1 (de) * 2020-01-30 2020-11-15 Andritz Ag Maschf Vorrichtung und verfahren zum herstellen einer faserstoffbahn

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2548793A1 (de) * 1975-10-02 1977-04-07 Escher Wyss Gmbh Trennvorrichtung zum trennen zweier siebe einer doppelsieb-papiermaschine
GB1470173A (en) * 1974-03-17 1977-04-14 Int Paper Co Twin-wire papermaking apparatus
DE3938159A1 (de) * 1989-11-16 1991-05-23 Oberdorfer Fa F Verbundgewebe fuer papiermaschinensiebe
DE202004002985U1 (de) * 2004-02-27 2004-04-22 Voith Paper Patent Gmbh Doppelsiebformer einer Maschine zur Herstellung einer Faserstoffbahn

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4379735A (en) * 1981-08-06 1983-04-12 Jwi Ltd. Three-layer forming fabric
JPS60119293A (ja) * 1983-11-30 1985-06-26 日本フィルコン株式会社 製紙用織物
FI78329B (fi) * 1987-02-10 1989-03-31 Tamfelt Oy Ab Pappersmaskinduk.
US5169709A (en) * 1991-10-16 1992-12-08 Wangner Systems Corporation Paper machine forming fabric with controlled porosity
US5164249A (en) * 1991-11-22 1992-11-17 Wangner Systems Corporation Controlled porosity papermaking fabric
US5366798A (en) * 1993-11-30 1994-11-22 Wangner Systems Corporation Multi-layered papermaking fabric having stabilized stacked weft yarn
GB9604602D0 (en) * 1996-03-04 1996-05-01 Jwi Ltd Composite papermaking fabric with paired weft binder yarns
US7008512B2 (en) * 2002-11-21 2006-03-07 Albany International Corp. Fabric with three vertically stacked wefts with twinned forming wefts

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1470173A (en) * 1974-03-17 1977-04-14 Int Paper Co Twin-wire papermaking apparatus
DE2548793A1 (de) * 1975-10-02 1977-04-07 Escher Wyss Gmbh Trennvorrichtung zum trennen zweier siebe einer doppelsieb-papiermaschine
DE3938159A1 (de) * 1989-11-16 1991-05-23 Oberdorfer Fa F Verbundgewebe fuer papiermaschinensiebe
DE202004002985U1 (de) * 2004-02-27 2004-04-22 Voith Paper Patent Gmbh Doppelsiebformer einer Maschine zur Herstellung einer Faserstoffbahn

Also Published As

Publication number Publication date
DE102004044570A1 (de) 2006-03-30
US20060060321A1 (en) 2006-03-23

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