AT508201A3 - Forming section - Google Patents

Forming section Download PDF

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Publication number
AT508201A3
AT508201A3 ATA578/2010A AT5782010A AT508201A3 AT 508201 A3 AT508201 A3 AT 508201A3 AT 5782010 A AT5782010 A AT 5782010A AT 508201 A3 AT508201 A3 AT 508201A3
Authority
AT
Austria
Prior art keywords
forming
section
point
forming shoe
pulp suspension
Prior art date
Application number
ATA578/2010A
Other languages
German (de)
Other versions
AT508201B1 (en
AT508201A2 (en
Inventor
Teuvo Virkkunen
Antti Poikolainen
Original Assignee
Metso Paper Inc
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 Metso Paper Inc filed Critical Metso Paper Inc
Publication of AT508201A2 publication Critical patent/AT508201A2/en
Publication of AT508201A3 publication Critical patent/AT508201A3/en
Application granted granted Critical
Publication of AT508201B1 publication Critical patent/AT508201B1/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
    • 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
    • D21F1/48—Suction apparatus
    • D21F1/52—Suction boxes without rolls
    • D—TEXTILES; PAPER
    • D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
    • D21F—PAPER-MAKING MACHINES; METHODS OF PRODUCING PAPER THEREON
    • D21F11/00—Processes for making continuous lengths of paper, or of cardboard, or of wet web for fibre board production, on paper-making machines
    • D21F11/02—Processes for making continuous lengths of paper, or of cardboard, or of wet web for fibre board production, on paper-making machines of the Fourdrinier type
    • D21F11/04—Processes for making continuous lengths of paper, or of cardboard, or of wet web for fibre board production, on paper-making machines of the Fourdrinier type paper or board consisting on two or more layers

Landscapes

  • Paper (AREA)

Abstract

Eine Blattbildungspartie umfasst eine Untersiebschlaufe (11), die hinter der Brustwalze (12) einen Langsiebabschnitt (T1) bildet. Auf dem Langsiebabschnitt (T1) befindet sich ein stationärer Formierschuh (40), der einen mit durchgehenden Öffnungen (42) versehenen Deckel (41) hat und ein durch die Öffnungen (42) des Deckels (41) hindurch wirkendes Vakuum (P40) aufweist. Des Weiteren hat die Blattbildungspartie einen Stoffauflauf (100), mit dem ein Faserstoffsuspensionsstrahl auf die Auftreffstelle am Anfangsteil des Formierschuhs (40) gespritzt wird. Der mit Öffnungen (42) versehene Bereich des Deckels (41) des Formierschuhs (40) beginnt an der Auftreffstelle des Faserstoffsuspensionsstrahls und erstreckt sich in Maschinenrichtung bis zur Wasserlinie der Bahn, wobei im Bereich des Formierschuhs (40) von der Suspensionsstrahl-auftreffstelle bis zur Wasserlinie der Bahn ein ununterbrochenes Vakuum auf die Faserstoffsuspension wirkt.A sheet forming section comprises a bottom wire loop (11) which forms a longitudinal wire section (T1) behind the breast roll (12). On the strainer section (T1) is a stationary forming shoe (40) having a lid (41) provided with through holes (42) and having a vacuum (P40) acting through the openings (42) of the lid (41). Furthermore, the forming section has a headbox (100), with which a pulp suspension jet is sprayed onto the point of impact at the beginning part of the forming shoe (40). The apertured region (42) of the shroud (41) of the forming shoe (40) begins at the point of impact of the pulp suspension jet and extends in the machine direction to the waterline of the web, in the region of the forming shoe (40) from the suspension jet impingement point to the water jet Waterline of the web an uninterrupted vacuum acts on the pulp suspension.

ATA578/2010A 2009-04-22 2010-04-09 Forming section AT508201B1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FI20095440A FI20095440A7 (en) 2009-04-22 2009-04-22 Forming part

Publications (3)

Publication Number Publication Date
AT508201A2 AT508201A2 (en) 2010-11-15
AT508201A3 true AT508201A3 (en) 2012-06-15
AT508201B1 AT508201B1 (en) 2012-10-15

Family

ID=40590319

Family Applications (1)

Application Number Title Priority Date Filing Date
ATA578/2010A AT508201B1 (en) 2009-04-22 2010-04-09 Forming section

Country Status (3)

Country Link
AT (1) AT508201B1 (en)
DE (1) DE102010003946A1 (en)
FI (1) FI20095440A7 (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2841643B1 (en) * 2012-04-27 2017-03-22 Valmet Technologies, Inc. Forming section
DE102018121155A1 (en) * 2018-08-30 2020-03-05 Voith Patent Gmbh METHOD AND MACHINE FOR PRODUCING A MULTI-LAYER FIBROUS MATERIAL

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5972168A (en) * 1989-08-22 1999-10-26 Voith Sulzer Papiertechnik Patent Gmbh Twin wire former
WO2008000900A1 (en) * 2006-06-28 2008-01-03 Metso Paper, Inc. Forming section

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5972168A (en) * 1989-08-22 1999-10-26 Voith Sulzer Papiertechnik Patent Gmbh Twin wire former
WO2008000900A1 (en) * 2006-06-28 2008-01-03 Metso Paper, Inc. Forming section

Also Published As

Publication number Publication date
FI20095440L (en) 2010-10-23
AT508201B1 (en) 2012-10-15
FI20095440A7 (en) 2010-10-23
DE102010003946A1 (en) 2010-10-28
FI20095440A0 (en) 2009-04-22
AT508201A2 (en) 2010-11-15

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Legal Events

Date Code Title Description
MM01 Lapse because of not paying annual fees

Effective date: 20170409