EP0335821A2 - Vorrichtung zur Herstellung einer Bahn - Google Patents

Vorrichtung zur Herstellung einer Bahn Download PDF

Info

Publication number
EP0335821A2
EP0335821A2 EP89630068A EP89630068A EP0335821A2 EP 0335821 A2 EP0335821 A2 EP 0335821A2 EP 89630068 A EP89630068 A EP 89630068A EP 89630068 A EP89630068 A EP 89630068A EP 0335821 A2 EP0335821 A2 EP 0335821A2
Authority
EP
European Patent Office
Prior art keywords
stock
wire
headbox
forming section
disposed
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
EP89630068A
Other languages
English (en)
French (fr)
Other versions
EP0335821B1 (de
EP0335821A3 (en
Inventor
Merle Wayne North
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.)
Beloit Corp
Original Assignee
Beloit Corp
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 Beloit Corp filed Critical Beloit Corp
Publication of EP0335821A2 publication Critical patent/EP0335821A2/de
Publication of EP0335821A3 publication Critical patent/EP0335821A3/en
Application granted granted Critical
Publication of EP0335821B1 publication Critical patent/EP0335821B1/de
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • DTEXTILES; PAPER
    • D21PAPER-MAKING; PRODUCTION OF CELLULOSE
    • D21FPAPER-MAKING MACHINES; METHODS OF PRODUCING PAPER THEREON
    • D21F9/00Complete machines for making continuous webs of paper
    • D21F9/003Complete machines for making continuous webs of paper of the twin-wire type

Definitions

  • Another object of the present invention is the provision of an apparatus for forming a web in which a first turning bar is disposed adjacent to the first end of a forming section for guiding a first forming wire such that the first wire is disposed between the first turning bar and the stock.
  • Another object of the present invention is the provision of an apparatus for forming a web in which the stock is ejected centrally into the forming section such that the stock first contacts the first and second wires at approximately the same distance from the headbox.
  • the first turning bar is disposed downstream relative to the second turning bar and the first convex surface defines a leading and a trailing edge with the trailing edge of the first convex surface being disposed almost parallel to the stock.
  • a CONVERFLO headbox of the type shown in U.S. patent number 4,141,788 is disposed adjacent to the turning bars with a pair of trailing elements extending downstream relative to the slice lip such that the center layer of relatively low quality stock is separated from the outer layers which initially contact the respective wires.
  • the arrangement is such that the purity of the outer layers of the resultant web is maintained thereby providing a multi-ply board having enhanced printing characteristics.
  • the first and second turning bars 24 and 26 define respectively a first and second convex surface 28 and 30 for slidingly engaging the first and second wires 14 and 16 respectively such that the headbox 12 is disposed in close proximity to the first end 20 of the forming section 18 so that disturbance of the stock between the headbox 12 and the first end 20 of the forming section 18 is minimized.

Landscapes

  • Paper (AREA)
EP19890630068 1988-03-30 1989-03-30 Vorrichtung zur Herstellung einer Bahn Expired - Lifetime EP0335821B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US17501288A 1988-03-30 1988-03-30
US175012 1998-10-19

Publications (3)

Publication Number Publication Date
EP0335821A2 true EP0335821A2 (de) 1989-10-04
EP0335821A3 EP0335821A3 (en) 1990-01-31
EP0335821B1 EP0335821B1 (de) 1993-10-06

Family

ID=22638468

Family Applications (1)

Application Number Title Priority Date Filing Date
EP19890630068 Expired - Lifetime EP0335821B1 (de) 1988-03-30 1989-03-30 Vorrichtung zur Herstellung einer Bahn

Country Status (4)

Country Link
EP (1) EP0335821B1 (de)
JP (1) JPH01314797A (de)
CA (1) CA1313964C (de)
DE (1) DE68909651T2 (de)

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4105215A1 (de) * 1991-02-20 1992-08-27 Voith Gmbh J M Sieb-formerpartie
EP0515964A1 (de) * 1991-05-29 1992-12-02 J.M. Voith GmbH Doppelsiebformer für eine Papiermaschine
WO1993011298A1 (en) * 1991-12-02 1993-06-10 Beloit Technologies, Inc. Controlled jet injection apparatus for a papermaking machine headbox
DE4497054C1 (de) * 1993-09-22 1997-02-27 Voith Gmbh J M Doppelsiebformer einer Papiermaschine
EP1136620A3 (de) * 2000-03-14 2002-01-02 Voith Paper Patent GmbH Doppelsiebformer
US6372091B2 (en) 1999-06-18 2002-04-16 Metso Paper, Inc. Method and apparatus for forming a paper web
DE102011088930A1 (de) 2010-12-20 2012-06-21 Metso Paper, Inc. Doppelsiebanordnung in der Formierpartie einer Faserbahnmaschine

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB9001078D0 (en) * 1990-01-17 1990-03-14 Kodak Ltd Photographic silver chloride emulsions

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3440136A (en) * 1965-12-16 1969-04-22 Kimberly Clark Co Papermaking apparatus including two wire sheet formers having means for air purging
US3743571A (en) * 1969-02-03 1973-07-03 Int Paper Co Paper web formation using dual fabrics
AT322963B (de) * 1970-10-30 1975-06-25 Arledter Hanns F Dr Ing Verfahren zur blattbildung bei einer doppelsieb-papiermaschinen
US3823062A (en) * 1972-02-28 1974-07-09 Int Paper Co Twin-wire papermaking employing stabilized stock flow and water filled seal(drainage)boxes
FI63077C (fi) * 1977-09-21 1983-04-11 Tampella Oy Ab Foerfarande och anordning foer reglering av profilen av en fiberbana i en pappersmaskin
FI840246A7 (fi) * 1984-01-20 1985-07-21 Valmet Oy Foerfarande och anordning vid formning av pappersbana.

Cited By (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4105215A1 (de) * 1991-02-20 1992-08-27 Voith Gmbh J M Sieb-formerpartie
EP0515964A1 (de) * 1991-05-29 1992-12-02 J.M. Voith GmbH Doppelsiebformer für eine Papiermaschine
WO1993011298A1 (en) * 1991-12-02 1993-06-10 Beloit Technologies, Inc. Controlled jet injection apparatus for a papermaking machine headbox
DE4497054C1 (de) * 1993-09-22 1997-02-27 Voith Gmbh J M Doppelsiebformer einer Papiermaschine
US5667640A (en) * 1993-09-22 1997-09-16 J.M. Voith Gmbh Two-wire former for paper-making machines
US5730841A (en) * 1993-09-22 1998-03-24 J.M. Voith Gmbh Two wire former for paper making machines
DE4497054C2 (de) * 1993-09-22 1999-04-29 Voith Gmbh J M Doppelsiebformer einer Papiermaschine
US6372091B2 (en) 1999-06-18 2002-04-16 Metso Paper, Inc. Method and apparatus for forming a paper web
EP1136620A3 (de) * 2000-03-14 2002-01-02 Voith Paper Patent GmbH Doppelsiebformer
US6521091B2 (en) 2000-03-14 2003-02-18 Voith Paper Patent Gmbh Twin wire former
DE102011088930A1 (de) 2010-12-20 2012-06-21 Metso Paper, Inc. Doppelsiebanordnung in der Formierpartie einer Faserbahnmaschine

Also Published As

Publication number Publication date
DE68909651D1 (de) 1993-11-11
JPH0413479B2 (de) 1992-03-09
JPH01314797A (ja) 1989-12-19
CA1313964C (en) 1993-03-02
EP0335821B1 (de) 1993-10-06
EP0335821A3 (en) 1990-01-31
DE68909651T2 (de) 1994-02-10

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