ATE335101T1 - METHOD AND DEVICE FOR FORMING A FIBROUS WEB - Google Patents

METHOD AND DEVICE FOR FORMING A FIBROUS WEB

Info

Publication number
ATE335101T1
ATE335101T1 AT99125356T AT99125356T ATE335101T1 AT E335101 T1 ATE335101 T1 AT E335101T1 AT 99125356 T AT99125356 T AT 99125356T AT 99125356 T AT99125356 T AT 99125356T AT E335101 T1 ATE335101 T1 AT E335101T1
Authority
AT
Austria
Prior art keywords
supply unit
band
additive
dewatering
plate
Prior art date
Application number
AT99125356T
Other languages
German (de)
Inventor
Guenter Dr Halmschlager
Josef Bachler
Christoph Merckens
Original Assignee
Voith Paper 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 Paper Patent Gmbh filed Critical Voith Paper Patent Gmbh
Application granted granted Critical
Publication of ATE335101T1 publication Critical patent/ATE335101T1/en

Links

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
    • D—TEXTILES; PAPER
    • D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
    • D21H—PULP COMPOSITIONS; PREPARATION THEREOF NOT COVERED BY SUBCLASSES D21C OR D21D; IMPREGNATING OR COATING OF PAPER; TREATMENT OF FINISHED PAPER NOT COVERED BY CLASS B31 OR SUBCLASS D21G; PAPER NOT OTHERWISE PROVIDED FOR
    • D21H23/00—Processes or apparatus for adding material to the pulp or to the paper
    • D21H23/02—Processes or apparatus for adding material to the pulp or to the paper characterised by the manner in which substances are added
    • D21H23/22—Addition to the formed paper
    • D21H23/24—Addition to the formed paper during paper manufacture
    • D21H23/26—Addition to the formed paper during paper manufacture by selecting point of addition or moisture content of the paper
    • D21H23/28—Addition before the dryer section, e.g. at the wet end or press section

Landscapes

  • Paper (AREA)
  • Preliminary Treatment Of Fibers (AREA)
  • Nonwoven Fabrics (AREA)
  • Treatment Of Fiber Materials (AREA)

Abstract

The additive supply unit (21) has a controller varying the volumetric flow and pressure of the additive. Preferred features: The supply unit has a connection for admixture of e.g. compressed air or steam. It is located near the start or the central region of the dewatering zone. Following the supply unit there is a balanced pressure, reduced-intensity dewatering section, e.g. its plate is non-perforated. The supply unit extends over the band width, divided into several sections, each individually controlled to discharge a fraction of the additive. They have moving cleansing units. Spacing between successive dewatering sections (16A, 16B) is variable. In the double band zone, against one porous band, there is a porous plate dewatering section, opposed to strip formations on the opposite side of the double band. Strip widths and/or their spacing vary. Plate and/or strips are pressed flexibly against the double band.
AT99125356T 1999-01-28 1999-12-20 METHOD AND DEVICE FOR FORMING A FIBROUS WEB ATE335101T1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE19903943A DE19903943A1 (en) 1999-01-28 1999-01-28 Method and device for forming a fibrous web

Publications (1)

Publication Number Publication Date
ATE335101T1 true ATE335101T1 (en) 2006-08-15

Family

ID=7896045

Family Applications (2)

Application Number Title Priority Date Filing Date
AT99125356T ATE335101T1 (en) 1999-01-28 1999-12-20 METHOD AND DEVICE FOR FORMING A FIBROUS WEB
AT00910603T ATE325232T1 (en) 1999-01-28 2000-01-21 MACHINE AND METHOD FOR PRODUCING A MULTI-LAYER FIBROUS WEB

Family Applications After (1)

Application Number Title Priority Date Filing Date
AT00910603T ATE325232T1 (en) 1999-01-28 2000-01-21 MACHINE AND METHOD FOR PRODUCING A MULTI-LAYER FIBROUS WEB

Country Status (6)

Country Link
EP (2) EP1024224B1 (en)
AT (2) ATE335101T1 (en)
AU (2) AU1249600A (en)
DE (3) DE19903943A1 (en)
NZ (1) NZ502443A (en)
WO (1) WO2000044980A1 (en)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10101549A1 (en) * 2001-01-15 2002-07-18 Voith Paper Patent Gmbh Production of a multi-layer paper/cardboard web, has couching station(s) along the web path where water is extracted and the fine matter is dispersed between layers to give a firm bond between them
DE10254301A1 (en) * 2002-11-21 2004-06-03 Voith Paper Patent Gmbh Process and wire section of a machine for producing a multi-layer fibrous web
DE102007055689A1 (en) * 2007-12-03 2009-06-04 Voith Patent Gmbh Paper machine and method for influencing the zonal water weight
DE102008041953A1 (en) 2008-09-10 2010-03-11 Voith Patent Gmbh Sheet forming device for producing multi-layered fibrous material web e.g. paper web, has head boxes attached to molders, and washing units provided in end areas of molders in running direction of molders

Family Cites Families (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AT16717B (en) * 1903-03-27 1904-06-25 George Arthur Goodson Electric igniter for explosion engines.
US3846232A (en) * 1973-03-23 1974-11-05 Valmet Oy Twin-wire paper forming with wires wrapping around a suction web-forming breast roll and then following a curved path to a suction couch roll
DE1942348A1 (en) * 1969-08-20 1971-03-04 Voith Gmbh J M Wire section of a paper machine with an applicator
GB8710428D0 (en) * 1987-05-01 1987-06-03 Beloit Corp Multi-ply web forming apparatus
DE3927597A1 (en) * 1989-08-22 1991-02-28 Voith Gmbh J M DOUBLE SCREEN SHAPER
EP0465698A1 (en) * 1990-07-10 1992-01-15 Beloit Corporation Multi-ply web former and method
DE19530983B4 (en) * 1995-08-23 2006-04-27 Voith Paper Patent Gmbh Device for producing a multilayer paper or cardboard
IT1291601B1 (en) * 1997-04-18 1999-01-11 Giuseppe Locati PROCESS AND PLANT FOR THE PRODUCTION OF PAPER AND CARDBOARD STARTING FROM WASTE PAPER
DE19733316A1 (en) * 1997-08-01 1999-02-04 Voith Sulzer Papiermasch Gmbh Method and device for forming a fibrous web
DE19733318A1 (en) * 1997-08-01 1999-02-04 Voith Sulzer Papiermasch Gmbh Twin wire former
DE19803591A1 (en) * 1998-01-30 1999-08-05 Voith Sulzer Papiertech Patent Twin-wire former
FI103211B1 (en) * 1998-02-09 1999-05-14 Valmet Corp Depositing of an additive in a web-forming unit in a cardboard machine

Also Published As

Publication number Publication date
EP1075568A1 (en) 2001-02-14
EP1024224A2 (en) 2000-08-02
EP1024224A3 (en) 2003-07-16
NZ502443A (en) 2000-09-29
EP1075568B1 (en) 2006-05-03
ATE325232T1 (en) 2006-06-15
DE50012677D1 (en) 2006-06-08
EP1024224B1 (en) 2006-08-02
AU1249600A (en) 2000-08-03
DE19903943A1 (en) 2000-08-03
AU3276400A (en) 2000-08-18
WO2000044980A1 (en) 2000-08-03
DE59913733D1 (en) 2006-09-14

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