EP0967323A3 - Twin-wire former - Google Patents

Twin-wire former Download PDF

Info

Publication number
EP0967323A3
EP0967323A3 EP99101848A EP99101848A EP0967323A3 EP 0967323 A3 EP0967323 A3 EP 0967323A3 EP 99101848 A EP99101848 A EP 99101848A EP 99101848 A EP99101848 A EP 99101848A EP 0967323 A3 EP0967323 A3 EP 0967323A3
Authority
EP
European Patent Office
Prior art keywords
fourdrinier
support
underpressure
section
swivel
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
EP99101848A
Other languages
German (de)
French (fr)
Other versions
EP0967323B1 (en
EP0967323A2 (en
Inventor
Johann Moser
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 Sulzer Papiertechnik 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 Sulzer Papiertechnik Patent GmbH filed Critical Voith Sulzer Papiertechnik Patent GmbH
Publication of EP0967323A2 publication Critical patent/EP0967323A2/en
Publication of EP0967323A3 publication Critical patent/EP0967323A3/en
Application granted granted Critical
Publication of EP0967323B1 publication Critical patent/EP0967323B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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

Landscapes

  • Paper (AREA)
  • Nonwoven Fabrics (AREA)
  • Preliminary Treatment Of Fibers (AREA)
  • Thermal Transfer Or Thermal Recording In General (AREA)

Abstract

The double-fourdrinier section of a papermaking machine, has a lateral support bar (9) which applies an underpressure to the outer fourdrinier (11). The support bar (9) has a sliding surface (9a) in contact with the outer fourdrinier (11), followed by a foil surface (9b) in the direction of fourdrinier travel, which diverges from the fourdrinier surface to create an underpressure. The sliding surface (9a) is pressed against the outer fourdrinier (11) with a pliable pressure. As seen in cross section through the bar (9), the downstream section is supported by a swivel (7), while the upstream zone is held by a pliable setting unit such as a pneumatic hose (6). The gap can be varied between the swivel (7) and the outer fourdrinier (11), and the angle between the foil surface (9b) and the outer fourdrinier (11) can be set to give the required level of underpressure. The position of the support system can be varied parallel to the direction of fourdrinier travel, as a support shoe or suction box and the like which is pressed pliably against the outer fourdrinier. The support unit (9) is in the loop of the lower fourdrinier (11) and the roller (14) to form the wet pulp web within the loop of the upper fourdrinier (12). The two fourdriniers (11,12) can run upwards, from below, between the web forming roller (14) and the support (9), or downwards from above.
EP99101848A 1998-06-25 1999-01-28 Twin-wire former Expired - Lifetime EP0967323B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19828237 1998-06-25
DE19828237A DE19828237A1 (en) 1998-06-25 1998-06-25 Double-fourdrinier section at a papermaking machine

Publications (3)

Publication Number Publication Date
EP0967323A2 EP0967323A2 (en) 1999-12-29
EP0967323A3 true EP0967323A3 (en) 2000-01-05
EP0967323B1 EP0967323B1 (en) 2003-01-02

Family

ID=7871926

Family Applications (1)

Application Number Title Priority Date Filing Date
EP99101848A Expired - Lifetime EP0967323B1 (en) 1998-06-25 1999-01-28 Twin-wire former

Country Status (4)

Country Link
US (1) US6254727B1 (en)
EP (1) EP0967323B1 (en)
AT (1) ATE230454T1 (en)
DE (2) DE19828237A1 (en)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10343914A1 (en) * 2003-09-19 2005-05-04 Voith Paper Patent Gmbh Process and assembly to de-water fibrous suspension of paper or cardboard employs a top water skimmer with lower suction at outer margins
DE102004000068A1 (en) * 2004-12-30 2006-07-13 Voith Paper Patent Gmbh Dewatering device of a twin-wire former of a machine for producing a fibrous web
FI20065142L (en) * 2006-02-28 2007-08-29 Metso Paper Inc Adjusting the distance of the suction box from the counter roller
FI120796B (en) * 2006-03-31 2010-03-15 Metso Paper Inc Adjusting the suction box distance from the back roll
CN111315929B (en) * 2017-09-01 2022-05-31 斯道拉恩索公司 Method for producing a cardboard, cardboard and corrugated cardboard

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0552139A1 (en) * 1992-01-17 1993-07-21 Valmet Paper Machinery Inc. Web former for a paper machine
WO1995034713A1 (en) * 1994-06-15 1995-12-21 Valmet Corporation Gap former in a paper machine

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH601556A5 (en) * 1975-10-03 1978-07-14 Escher Wyss Gmbh
DE3815316C2 (en) * 1988-05-05 1996-02-01 Voith Sulzer Papiermasch Gmbh Device for dewatering on a twin wire former
DE4026953C2 (en) * 1990-01-26 1995-11-30 Escher Wyss Gmbh Dewatering device and method for dewatering on a twin wire former
DE9105328U1 (en) * 1991-04-30 1991-07-04 J.M. Voith Gmbh, 7920 Heidenheim, De
US5573643A (en) 1992-01-17 1996-11-12 Valmet Corporation Twin wire web former in a paper machine
DE4328024A1 (en) * 1993-08-20 1995-02-23 Voith Gmbh J M Twin-wire sheet former
DE19652485A1 (en) * 1996-12-17 1998-06-18 Voith Sulzer Papiermasch Gmbh Paper-making machine fourdrinier section

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0552139A1 (en) * 1992-01-17 1993-07-21 Valmet Paper Machinery Inc. Web former for a paper machine
WO1995034713A1 (en) * 1994-06-15 1995-12-21 Valmet Corporation Gap former in a paper machine

Also Published As

Publication number Publication date
ATE230454T1 (en) 2003-01-15
DE19828237A1 (en) 1999-12-30
EP0967323B1 (en) 2003-01-02
DE59903896D1 (en) 2003-02-06
US6254727B1 (en) 2001-07-03
EP0967323A2 (en) 1999-12-29

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