GB2180273A - Procedure and means for improving the papermaking process on a fourdrinier wire section - Google Patents

Procedure and means for improving the papermaking process on a fourdrinier wire section

Info

Publication number
GB2180273A
GB2180273A GB08622953A GB8622953A GB2180273A GB 2180273 A GB2180273 A GB 2180273A GB 08622953 A GB08622953 A GB 08622953A GB 8622953 A GB8622953 A GB 8622953A GB 2180273 A GB2180273 A GB 2180273A
Authority
GB
United Kingdom
Prior art keywords
water
wire
wires
run
dewatering
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
GB08622953A
Other versions
GB8622953D0 (en
GB2180273B (en
Inventor
Alexander Malashenko
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 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 GB8622953D0 publication Critical patent/GB8622953D0/en
Publication of GB2180273A publication Critical patent/GB2180273A/en
Application granted granted Critical
Publication of GB2180273B publication Critical patent/GB2180273B/en
Expired legal-status Critical Current

Links

Classifications

    • D—TEXTILES; PAPER
    • D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
    • D21F—PAPER-MAKING MACHINES; METHODS OF PRODUCING PAPER THEREON
    • D21F3/00—Press section 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
    • D21F3/00—Press section of machines for making continuous webs of paper
    • D21F3/02—Wet presses
    • D21F3/04—Arrangements thereof
    • 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
    • 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
    • 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
    • D21F9/00—Complete machines for making continuous webs of paper
    • D21F9/02—Complete machines for making continuous webs of paper of the Fourdrinier type

Landscapes

  • Paper (AREA)

Abstract

Procedure in the forming of a paper web and in dewatering the paper pulp suspension. A pulp suspension jet (J) is supplied onto a lower wire (11), water is drained through the lower wire (11), the fibre pulp course (Wo) is conducted into a dewatering and forming zone (L), where water is drained through the wires (11, 31) and the web (W) is conducted onto a pick-up fabric (21). In the forming zone, the joint run of the wires (11, 31) is deflected, a dewatering effect is caused such that water escapes from the pulpe course (Wo) only through the upper wire (31), a change of direction of the run of the wires (11, 31) is caused in the opposite direction, water that has escaped through the upper wire (31) is collected and said water is guided to water collecting means (40, 46), the run of the twin-wire part is deflected in a direction opposite to preceding deflection; and the joint run of the wires (11, 31) and of the pulp course conforms, starting from the single-wire initial part (11a), to sinusoidal path, the ratio of this wave's length lambda to the amplitude H of the wave being in the range lambda /H = 12 to 20. The invention also concerns an upper wire unit (30), with ancillary equipment (41, 43, 45) for remodelling the Fourdrinier wire section of a paper machine.
GB08622953A 1985-01-28 1986-01-27 A fourdrinier papermaking machine having an upper wire unit Expired GB2180273B (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FI850364A FI82084C (en) 1985-01-28 1985-01-28 Upper virus unit

Publications (3)

Publication Number Publication Date
GB8622953D0 GB8622953D0 (en) 1986-10-29
GB2180273A true GB2180273A (en) 1987-03-25
GB2180273B GB2180273B (en) 1988-06-22

Family

ID=8520273

Family Applications (1)

Application Number Title Priority Date Filing Date
GB08622953A Expired GB2180273B (en) 1985-01-28 1986-01-27 A fourdrinier papermaking machine having an upper wire unit

Country Status (5)

Country Link
DE (1) DE3690026T1 (en)
FI (1) FI82084C (en)
GB (1) GB2180273B (en)
SE (1) SE452997B (en)
WO (1) WO1986004368A1 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5395484A (en) * 1992-01-17 1995-03-07 Valmet Paper Machinery Inc. Twin wire web former for a paper machine

Families Citing this family (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4875977A (en) * 1987-04-17 1989-10-24 The Black Clawson Company Horizontal twin wire machine with vertically adjustable open roll and deflector blade
FI77281C (en) * 1987-06-18 1989-02-10 Valmet Paper Machinery Inc HYBRIDFORMARE FOER EN PAPPERSMASKIN.
DE3815316C2 (en) * 1988-05-05 1996-02-01 Voith Sulzer Papiermasch Gmbh Device for dewatering on a twin wire former
WO1990005210A1 (en) * 1988-10-31 1990-05-17 Beloit Corporation Forming apparatus
US5389206A (en) * 1989-08-22 1995-02-14 J. M. Voith Gmbh Twin wire former
DE4002304A1 (en) * 1990-01-26 1991-08-14 Escher Wyss Gmbh Paper forming stretch
DE4026953C2 (en) * 1990-01-26 1995-11-30 Escher Wyss Gmbh Dewatering device and method for dewatering on a twin wire former
WO1992014880A1 (en) * 1991-02-25 1992-09-03 Ab Nordiska Egoutteurfabriken Top wire device
ATE171490T1 (en) * 1994-04-12 1998-10-15 Jwi Ltd IMPROVED SHEETING IN A TWIN-FIRE PAPER MACHINE
FI991356A (en) * 1999-06-14 2000-12-15 Valmet Corp Procedure for removing water in the wire portion of a cellulose machine and drainage unit
CN110735351A (en) * 2019-11-21 2020-01-31 中冶美利云产业投资股份有限公司 fourdrinier paper-making machine with top-wire former

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3306717A1 (en) * 1982-03-02 1983-09-08 Valmet Oy, 00130 Helsinki TRAINING PARTY FOR MODERNIZING THE LONG SCREENING PART OF A PAPER MACHINE
DE3315023A1 (en) * 1982-04-30 1983-11-10 Valmet Oy, 00130 Helsinki FORM SHOE FOR THE SHAPER OF A PAPER MACHINE
US4472244A (en) * 1981-02-10 1984-09-18 Valmet Oy Wire section in a paper machine
GB2143871A (en) * 1983-07-23 1985-02-20 Beloit Walmsley Ltd Twin wire paper forming machine

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4472244A (en) * 1981-02-10 1984-09-18 Valmet Oy Wire section in a paper machine
DE3306717A1 (en) * 1982-03-02 1983-09-08 Valmet Oy, 00130 Helsinki TRAINING PARTY FOR MODERNIZING THE LONG SCREENING PART OF A PAPER MACHINE
DE3315023A1 (en) * 1982-04-30 1983-11-10 Valmet Oy, 00130 Helsinki FORM SHOE FOR THE SHAPER OF A PAPER MACHINE
GB2143871A (en) * 1983-07-23 1985-02-20 Beloit Walmsley Ltd Twin wire paper forming machine

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5395484A (en) * 1992-01-17 1995-03-07 Valmet Paper Machinery Inc. Twin wire web former for a paper machine
US5536372A (en) * 1992-01-17 1996-07-16 Valmet Corporation Web former for a paper machine with spring blade loading device
US5582687A (en) * 1992-01-17 1996-12-10 Valmet Corporation Web former for a paper machine

Also Published As

Publication number Publication date
DE3690026T1 (en) 1987-01-29
GB8622953D0 (en) 1986-10-29
SE452997B (en) 1988-01-04
FI82084C (en) 1991-01-10
FI850364A0 (en) 1985-01-28
WO1986004368A1 (en) 1986-07-31
SE8604035L (en) 1986-09-24
GB2180273B (en) 1988-06-22
SE8604035D0 (en) 1986-09-24
FI82084B (en) 1990-09-28
FI850364L (en) 1986-07-29

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Legal Events

Date Code Title Description
PCNP Patent ceased through non-payment of renewal fee