ATE63145T1 - METHOD AND DEVICE FOR DEWATERING A FIBER WEB IN A PAPER MACHINE. - Google Patents

METHOD AND DEVICE FOR DEWATERING A FIBER WEB IN A PAPER MACHINE.

Info

Publication number
ATE63145T1
ATE63145T1 AT87305818T AT87305818T ATE63145T1 AT E63145 T1 ATE63145 T1 AT E63145T1 AT 87305818 T AT87305818 T AT 87305818T AT 87305818 T AT87305818 T AT 87305818T AT E63145 T1 ATE63145 T1 AT E63145T1
Authority
AT
Austria
Prior art keywords
dewatering
period
flocks
paper machine
fiber web
Prior art date
Application number
AT87305818T
Other languages
German (de)
Inventor
Taisto Nevalainen
Olavi Tolonen
Original Assignee
Valmet Karhula 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
Family has litigation
First worldwide family litigation filed litigation Critical https://patents.darts-ip.com/?family=8522867&utm_source=***_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=ATE63145(T1) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Application filed by Valmet Karhula Inc filed Critical Valmet Karhula Inc
Application granted granted Critical
Publication of ATE63145T1 publication Critical patent/ATE63145T1/en

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
    • 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
    • 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)
  • Diaphragms For Electromechanical Transducers (AREA)
  • Artificial Filaments (AREA)
  • Stringed Musical Instruments (AREA)
  • Treatment Of Liquids With Adsorbents In General (AREA)
  • Seasonings (AREA)

Abstract

The present invention relates to a method and apparatus for removing water from a fibrous web. The invention is intended especially for applications to be used in a twin wire former of a paper or a board machine. A problem earlier experienced in foudrinier machines has been fiber flocking in the web surface, which results from a Iong and tranquil period of flowing, during which period fibers have enough time to stick to one another and form flocks that deteriorate the paper quality. This problem has been solved by arranging rows of dewatering pressure elements (24, 32, 33) as part of the covers (25, 34, 33) of both upper and lower dewateri::g units (20, 30) so as to match or be aligned at least partly, whereby they generate an intensive turbulence field into the web surface to break the flocks that have already been formed.
AT87305818T 1986-07-02 1987-07-01 METHOD AND DEVICE FOR DEWATERING A FIBER WEB IN A PAPER MACHINE. ATE63145T1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FI862808A FI862808A (en) 1986-07-02 1986-07-02 FOERFARANDE OCH ANORDNING FOER AVVATTNING AV EN FIBERBANA.
EP87305818A EP0251778B1 (en) 1986-07-02 1987-07-01 Method and apparatus for removing water from a fibrous web in a papermachine

Publications (1)

Publication Number Publication Date
ATE63145T1 true ATE63145T1 (en) 1991-05-15

Family

ID=8522867

Family Applications (1)

Application Number Title Priority Date Filing Date
AT87305818T ATE63145T1 (en) 1986-07-02 1987-07-01 METHOD AND DEVICE FOR DEWATERING A FIBER WEB IN A PAPER MACHINE.

Country Status (8)

Country Link
EP (1) EP0251778B1 (en)
JP (1) JPH01118690A (en)
KR (1) KR900002102B1 (en)
AT (1) ATE63145T1 (en)
BR (1) BR8703365A (en)
DE (1) DE3769710D1 (en)
ES (1) ES2022356B3 (en)
FI (1) FI862808A (en)

Families Citing this family (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3815316C2 (en) * 1988-05-05 1996-02-01 Voith Sulzer Papiermasch Gmbh Device for dewatering on a twin wire former
AU4307889A (en) * 1988-10-31 1990-05-28 Beloit Corporation Forming apparatus
FI86652C (en) * 1989-04-19 1992-09-25 Tampella Oy Ab Device in a paper machine for providing dewatering on the surface
FI98540C (en) * 1989-05-08 1997-07-10 Valmet Corp Device for forming a paper or board web of fibrous material
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
DE4037017C2 (en) * 1990-11-20 1994-12-08 Escher Wyss Gmbh Wet part of a twin wire paper machine
FI90673C (en) * 1991-06-26 1994-03-10 Valmet Paper Machinery Inc Path forming section with double wire in a paper machine
DE4141607C2 (en) * 1991-12-17 1996-04-25 Voith Gmbh J M Twin wire former
DE10327424A1 (en) * 2003-06-18 2005-02-10 Voith Paper Patent Gmbh Device for improving the properties of a fibrous web produced in a sheet forming device
AT502805B1 (en) * 2006-01-05 2007-06-15 Andritz Ag Maschf METHOD AND DEVICE FOR DRAINING A FIBROUS WEB

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3215594A (en) * 1962-10-08 1965-11-02 Black Clawson Co Paper forming apparatus
JPS5122521A (en) * 1974-08-15 1976-02-23 Kubota Ltd SEHISOCHITSUKITAUEKI
JPS612718Y2 (en) * 1981-03-28 1986-01-28
JPS6170091A (en) * 1984-09-12 1986-04-10 三菱重工業株式会社 Apparatus for uniformly dispersing paper stock
JPS6175898A (en) * 1984-09-19 1986-04-18 三菱重工業株式会社 Paper layer forming apparatus
JPS6189398A (en) * 1984-10-03 1986-05-07 三菱重工業株式会社 Paper layer forming apparatus
JPS61119796A (en) * 1984-11-16 1986-06-06 三菱重工業株式会社 Paper layer forming apparatus

Also Published As

Publication number Publication date
DE3769710D1 (en) 1991-06-06
FI862808A (en) 1988-01-03
FI862808A0 (en) 1986-07-02
EP0251778A1 (en) 1988-01-07
JPH0444038B2 (en) 1992-07-20
KR900002102B1 (en) 1990-04-02
KR880001887A (en) 1988-04-27
ES2022356B3 (en) 1991-12-01
BR8703365A (en) 1988-03-15
JPH01118690A (en) 1989-05-11
EP0251778B1 (en) 1991-05-02

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Legal Events

Date Code Title Description
UEP Publication of translation of european patent specification
RZN Patent revoked