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FI20085408L - The wire part of a paper or cardboard machine, the method of forming the web and the suction box - Google Patents

The wire part of a paper or cardboard machine, the method of forming the web and the suction box Download PDF

Info

Publication number
FI20085408L
FI20085408L FI20085408A FI20085408A FI20085408L FI 20085408 L FI20085408 L FI 20085408L FI 20085408 A FI20085408 A FI 20085408A FI 20085408 A FI20085408 A FI 20085408A FI 20085408 L FI20085408 L FI 20085408L
Authority
FI
Finland
Prior art keywords
suction box
web
wire part
paper
forming
Prior art date
Application number
FI20085408A
Other languages
Finnish (fi)
Swedish (sv)
Other versions
FI20085408A0 (en
FI20085408A7 (en
Inventor
Samppa Ahmaniemi
Antti Poikolainen
Tomi Tissari
Jukka Muhonen
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
Priority to FI20085408A priority Critical patent/FI20085408A7/en
Publication of FI20085408A0 publication Critical patent/FI20085408A0/en
Priority to PCT/FI2009/050349 priority patent/WO2009135992A1/en
Publication of FI20085408L publication Critical patent/FI20085408L/en
Publication of FI20085408A7 publication Critical patent/FI20085408A7/en

Links

Classifications

    • 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
    • D21F1/523—Covers thereof
    • 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)

Abstract

The forming section of a paper or board machine comprises a double-wire part, where water is removed from the web between two wires, and after the double- wire part there is at least one high-vacuum suction box (20) before a point where the web is transferred to the press section. The vacuum in the suction box (20) is 20-80 kPa, the cover (21) of the suction box is equipped with holes (22), the centre axis (B) of which holes (22) forms a sharp angle (a) with the direction of travel (A) of the wire (10) running over the cover (21), and the open area of the cover (21) is 40-90%. The suction box (20) is placed at the end of the forming section at a location where the dry solids content of the web (W) is at least 6%, preferably at least 10%.
FI20085408A 2008-05-05 2008-05-05 Wire section of a paper or board machine, method of forming a web and suction box FI20085408A7 (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
FI20085408A FI20085408A7 (en) 2008-05-05 2008-05-05 Wire section of a paper or board machine, method of forming a web and suction box
PCT/FI2009/050349 WO2009135992A1 (en) 2008-05-05 2009-05-04 Forming section of paper or board machine, method for the forming of web, and suction box

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FI20085408A FI20085408A7 (en) 2008-05-05 2008-05-05 Wire section of a paper or board machine, method of forming a web and suction box

Publications (3)

Publication Number Publication Date
FI20085408A0 FI20085408A0 (en) 2008-05-05
FI20085408L true FI20085408L (en) 2009-11-06
FI20085408A7 FI20085408A7 (en) 2009-11-06

Family

ID=39523063

Family Applications (1)

Application Number Title Priority Date Filing Date
FI20085408A FI20085408A7 (en) 2008-05-05 2008-05-05 Wire section of a paper or board machine, method of forming a web and suction box

Country Status (2)

Country Link
FI (1) FI20085408A7 (en)
WO (1) WO2009135992A1 (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FI127338B (en) * 2010-04-26 2018-04-13 Valmet Technologies Inc Vacuum equipment for fiber web machine and fiber machine with vacuum equipment

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2487202A (en) * 1943-08-07 1949-11-08 West Virginia Pulp & Paper Co Suction box cover
US2934143A (en) * 1957-06-17 1960-04-26 Beloit Iron Works Suction flat box cover perforation
AT502805B1 (en) * 2006-01-05 2007-06-15 Andritz Ag Maschf METHOD AND DEVICE FOR DRAINING A FIBROUS WEB
FI118211B (en) * 2006-05-19 2007-08-31 Metso Paper Inc Static dewatering element for web forming machine, has thermally sprayed coating comprising agglomerate of powder particles containing primary particles with average size below preset value

Also Published As

Publication number Publication date
FI20085408A0 (en) 2008-05-05
FI20085408A7 (en) 2009-11-06
WO2009135992A1 (en) 2009-11-12

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Legal Events

Date Code Title Description
FD Application lapsed