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
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.
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)
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)
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 |
-
1986
- 1986-07-02 FI FI862808A patent/FI862808A/en not_active IP Right Cessation
-
1987
- 1987-07-01 DE DE8787305818T patent/DE3769710D1/en not_active Revoked
- 1987-07-01 ES ES87305818T patent/ES2022356B3/en not_active Expired - Lifetime
- 1987-07-01 AT AT87305818T patent/ATE63145T1/en not_active IP Right Cessation
- 1987-07-01 EP EP87305818A patent/EP0251778B1/en not_active Expired - Lifetime
- 1987-07-02 JP JP62164110A patent/JPH01118690A/en active Granted
- 1987-07-02 BR BR8703365A patent/BR8703365A/en unknown
- 1987-07-02 KR KR1019870007039A patent/KR900002102B1/en not_active IP Right Cessation
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 |