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FI932265A - Paper forming web forming section - Google Patents

Paper forming web forming section Download PDF

Info

Publication number
FI932265A
FI932265A FI932265A FI932265A FI932265A FI 932265 A FI932265 A FI 932265A FI 932265 A FI932265 A FI 932265A FI 932265 A FI932265 A FI 932265A FI 932265 A FI932265 A FI 932265A
Authority
FI
Finland
Prior art keywords
dewatering
wire
forming shoe
ribs
chamber
Prior art date
Application number
FI932265A
Other languages
Finnish (fi)
Swedish (sv)
Other versions
FI99033B (en
FI99033C (en
FI932265A0 (en
Inventor
Jyrki Jaakkola
Seppo Kiviranta
Ari Linsuri
Michael Odell
Antti Poikolainen
Samppa Salminen
Original Assignee
Valmet Paper Machinery 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 Valmet Paper Machinery Inc filed Critical Valmet Paper Machinery Inc
Priority to FI932265A priority Critical patent/FI99033C/en
Publication of FI932265A0 publication Critical patent/FI932265A0/en
Priority to DE69426169T priority patent/DE69426169T2/en
Priority to AT94850086T priority patent/ATE197177T1/en
Priority to EP94850086A priority patent/EP0627524B1/en
Priority to US08/246,176 priority patent/US5573643A/en
Priority to CA002123821A priority patent/CA2123821C/en
Publication of FI932265A publication Critical patent/FI932265A/en
Publication of FI99033B publication Critical patent/FI99033B/en
Application granted granted Critical
Publication of FI99033C publication Critical patent/FI99033C/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
    • D21F1/48—Suction apparatus

Landscapes

  • Paper (AREA)
  • Sheets, Magazines, And Separation Thereof (AREA)
  • Absorbent Articles And Supports Therefor (AREA)
  • Making Paper Articles (AREA)
  • Separation, Sorting, Adjustment, Or Bending Of Sheets To Be Conveyed (AREA)
  • Controlling Rewinding, Feeding, Winding, Or Abnormalities Of Webs (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>
FI932265A 1992-01-17 1993-05-18 Paper forming web forming section FI99033C (en)

Priority Applications (6)

Application Number Priority Date Filing Date Title
FI932265A FI99033C (en) 1993-05-18 1993-05-18 Paper forming web forming section
DE69426169T DE69426169T2 (en) 1993-05-18 1994-05-17 Sheet forming section in a paper machine
AT94850086T ATE197177T1 (en) 1993-05-18 1994-05-17 FORMING PART IN A PAPER MACHINE
EP94850086A EP0627524B1 (en) 1993-05-18 1994-05-17 Web former in a paper machine
US08/246,176 US5573643A (en) 1992-01-17 1994-05-18 Twin wire web former in a paper machine
CA002123821A CA2123821C (en) 1993-05-18 1994-05-18 Web former in a paper machine

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FI932265A FI99033C (en) 1993-05-18 1993-05-18 Paper forming web forming section
FI932265 1993-05-18

Publications (4)

Publication Number Publication Date
FI932265A0 FI932265A0 (en) 1993-05-18
FI932265A true FI932265A (en) 1994-11-19
FI99033B FI99033B (en) 1997-06-13
FI99033C FI99033C (en) 1997-09-25

Family

ID=8537960

Family Applications (1)

Application Number Title Priority Date Filing Date
FI932265A FI99033C (en) 1992-01-17 1993-05-18 Paper forming web forming section

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)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0699798A1 (en) 1994-08-31 1996-03-06 Valmet Paper Machinery Inc. Twin-wire former, in particular for high-speed paper machines
US5593546A (en) * 1993-11-12 1997-01-14 Valmet Corporation Hybrid former with an MB unit in a paper machine
US5656133A (en) * 1994-06-17 1997-08-12 Valmet Corporation Hybrid former for a paper machine
US5759353A (en) * 1995-08-24 1998-06-02 Valmet Corporation Web former in a paper machine

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
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 gap former with pulsating pressure driven dewatering plates
EP2841644B1 (en) * 2012-04-27 2016-11-23 Valmet Technologies, Inc. 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.

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5593546A (en) * 1993-11-12 1997-01-14 Valmet Corporation Hybrid former with an MB unit in a paper machine
US5656133A (en) * 1994-06-17 1997-08-12 Valmet Corporation Hybrid former for a paper machine
EP0699798A1 (en) 1994-08-31 1996-03-06 Valmet Paper Machinery Inc. Twin-wire former, in particular for high-speed paper machines
US5833809A (en) * 1994-08-31 1998-11-10 Valmet Corporation Twin-wire former
US5759353A (en) * 1995-08-24 1998-06-02 Valmet Corporation Web former in a paper machine

Also Published As

Publication number Publication date
ATE197177T1 (en) 2000-11-15
FI99033B (en) 1997-06-13
FI99033C (en) 1997-09-25
EP0627524A1 (en) 1994-12-07
DE69426169D1 (en) 2000-11-30
DE69426169T2 (en) 2001-05-17
CA2123821A1 (en) 1994-11-19
FI932265A0 (en) 1993-05-18
EP0627524B1 (en) 2000-10-25
CA2123821C (en) 2000-05-16

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Legal Events

Date Code Title Description
BB Publication of examined application
MA Patent expired