DE69426169D1 - Sheet forming section in a paper machine - Google Patents

Sheet forming section in a paper machine

Info

Publication number
DE69426169D1
DE69426169D1 DE69426169T DE69426169T DE69426169D1 DE 69426169 D1 DE69426169 D1 DE 69426169D1 DE 69426169 T DE69426169 T DE 69426169T DE 69426169 T DE69426169 T DE 69426169T DE 69426169 D1 DE69426169 D1 DE 69426169D1
Authority
DE
Germany
Prior art keywords
dewatering
wire
forming shoe
ribs
chamber
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.)
Expired - Fee Related
Application number
DE69426169T
Other languages
German (de)
Other versions
DE69426169T2 (en
Inventor
Jyrki Jaakkola
Seppo Kiviranta
Ari Linsuri
Michael Odell
Antti Poikolainen
Samppa Salminen
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.)
Valmet Technologies Oy
Original Assignee
Valmet Oy
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 Valmet Oy filed Critical Valmet Oy
Publication of DE69426169D1 publication Critical patent/DE69426169D1/en
Application granted granted Critical
Publication of DE69426169T2 publication Critical patent/DE69426169T2/en
Anticipated expiration legal-status Critical
Expired - Fee Related 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
    • 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

Landscapes

  • Paper (AREA)
  • Sheets, Magazines, And Separation Thereof (AREA)
  • Absorbent Articles And Supports Therefor (AREA)
  • Separation, Sorting, Adjustment, Or Bending Of Sheets To Be Conveyed (AREA)
  • Controlling Rewinding, Feeding, Winding, Or Abnormalities Of Webs (AREA)
  • Making Paper Articles (AREA)

Abstract

The invention concerns a twin-wire (10,20) web former in a paper machine, comprising a single-wire initial portion, after which the twin-wire zone starts in the area of the ribbed deck (22a) of the first forming shoe (22) placed inside one of the wire loops (10). After the first forming shoe (22), a pressure-loaded (pk) dewatering unit (100) is fitted, which is provided with opposite sets of ribs (31,41) and with dewatering chambers (12,13). The first dewatering chamber (12) in this dewatering unit (100) is placed above the first forming shoe (22) so as, through its suction-deflector duct (16), to remove substantially water that drains from the area of the curved ribbed deck (22a) of the first forming shoe (22). The first dewatering chamber (12) is followed by a second dewatering chamber (13), whose lower part is connected with a set of dewatering and guide ribs (41), into whose gap spaces (41R) the drain duct (19) of the second dewatering chamber (13) is opened. Against the set of dewatering and guide ribs (41), a set of loading ribs operates, which is placed inside the opposite wire loop (20) and which operates by means of the medium pressure (pk) of the loading hoses (33). <IMAGE>
DE69426169T 1993-05-18 1994-05-17 Sheet forming section in a paper machine Expired - Fee Related DE69426169T2 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FI932265A FI99033C (en) 1993-05-18 1993-05-18 Paper forming web forming section

Publications (2)

Publication Number Publication Date
DE69426169D1 true DE69426169D1 (en) 2000-11-30
DE69426169T2 DE69426169T2 (en) 2001-05-17

Family

ID=8537960

Family Applications (1)

Application Number Title Priority Date Filing Date
DE69426169T Expired - Fee Related DE69426169T2 (en) 1993-05-18 1994-05-17 Sheet forming section in a paper machine

Country Status (5)

Country Link
EP (1) EP0627524B1 (en)
AT (1) ATE197177T1 (en)
CA (1) CA2123821C (en)
DE (1) DE69426169T2 (en)
FI (1) FI99033C (en)

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FI100542B (en) * 1993-11-12 1997-12-31 Valmet Paper Machinery Inc A paper machine hybrid former equipped with an MB unit
FI105934B (en) * 1994-06-17 2000-10-31 Valmet Paper Machinery Inc Entrance to a double-wire zone in a hybrid machine of a paper machine
FI96623C (en) 1994-08-31 1996-07-25 Valmet Paper Machinery Inc Double-wire molders, especially for fast paper machines
FI953984A (en) * 1995-08-24 1997-02-25 Valmet Corp Paper forming web forming section
DE10148921A1 (en) * 2001-10-04 2003-04-10 Voith Paper Patent Gmbh Machine for the production of a fibrous web
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
CN100427679C (en) * 2006-05-31 2008-10-22 华南理工大学 Paper machine web forming device for pulse pressure drived dewatering plate
CN104246066B (en) * 2012-04-27 2016-07-20 维美德技术有限公司 Forming section

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FI70615C (en) * 1982-08-23 1986-09-24 Ahlstroem Oy ANORDNING FOER ATT PAOVERKA EN PAO EN VIRA AVVATTNAD FIBERBANA
FI862809A (en) * 1986-07-02 1988-01-03 Ahlstroem Oy STOEDANDE AV EN AVVATTNINGSENHET PAO PAPPERSMASKINENS FORMNINGSDEL.
FI84637C (en) * 1988-12-01 1991-12-27 Valmet Paper Machinery Inc FOERFARANDE OCH ANORDNING VID FORMNING AV PAPPERS- ELLER KARTONGBANA.
DE3927597A1 (en) * 1989-08-22 1991-02-28 Voith Gmbh J M DOUBLE SCREEN SHAPER
FI920228A0 (en) * 1992-01-17 1992-01-17 Valmet Paper Machinery Inc BANFORMNINGSPARTI FOER PAPPERSMASKIN.

Also Published As

Publication number Publication date
FI99033C (en) 1997-09-25
EP0627524A1 (en) 1994-12-07
FI99033B (en) 1997-06-13
CA2123821C (en) 2000-05-16
EP0627524B1 (en) 2000-10-25
DE69426169T2 (en) 2001-05-17
ATE197177T1 (en) 2000-11-15
CA2123821A1 (en) 1994-11-19
FI932265A (en) 1994-11-19
FI932265A0 (en) 1993-05-18

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Legal Events

Date Code Title Description
8364 No opposition during term of opposition
8339 Ceased/non-payment of the annual fee