DE3769710D1 - METHOD AND DEVICE FOR DRAINING A FIBER STRIP IN A PAPER MACHINE. - Google Patents
METHOD AND DEVICE FOR DRAINING A FIBER STRIP IN A PAPER MACHINE.Info
- Publication number
- DE3769710D1 DE3769710D1 DE8787305818T DE3769710T DE3769710D1 DE 3769710 D1 DE3769710 D1 DE 3769710D1 DE 8787305818 T DE8787305818 T DE 8787305818T DE 3769710 T DE3769710 T DE 3769710T DE 3769710 D1 DE3769710 D1 DE 3769710D1
- Authority
- DE
- Germany
- Prior art keywords
- period
- flocks
- draining
- paper machine
- paper
- 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.)
- Revoked
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)
- Stringed Musical Instruments (AREA)
- Diaphragms For Electromechanical Transducers (AREA)
- Artificial Filaments (AREA)
- Seasonings (AREA)
- Treatment Of Liquids With Adsorbents In General (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 (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FI862808A FI862808A (en) | 1986-07-02 | 1986-07-02 | FOERFARANDE OCH ANORDNING FOER AVVATTNING AV EN FIBERBANA. |
Publications (1)
Publication Number | Publication Date |
---|---|
DE3769710D1 true DE3769710D1 (en) | 1991-06-06 |
Family
ID=8522867
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DE8787305818T Revoked DE3769710D1 (en) | 1986-07-02 | 1987-07-01 | METHOD AND DEVICE FOR DRAINING A FIBER STRIP 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 |
DE4026953C2 (en) * | 1990-01-26 | 1995-11-30 | Escher Wyss Gmbh | Dewatering device and method for dewatering on a twin wire former |
DE4002304A1 (en) * | 1990-01-26 | 1991-08-14 | Escher Wyss Gmbh | Paper forming stretch |
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 KR KR1019870007039A patent/KR900002102B1/en not_active IP Right Cessation
- 1987-07-02 BR BR8703365A patent/BR8703365A/en unknown
- 1987-07-02 JP JP62164110A patent/JPH01118690A/en active Granted
Also Published As
Publication number | Publication date |
---|---|
EP0251778A1 (en) | 1988-01-07 |
KR900002102B1 (en) | 1990-04-02 |
BR8703365A (en) | 1988-03-15 |
FI862808A0 (en) | 1986-07-02 |
ES2022356B3 (en) | 1991-12-01 |
FI862808A (en) | 1988-01-03 |
KR880001887A (en) | 1988-04-27 |
JPH01118690A (en) | 1989-05-11 |
EP0251778B1 (en) | 1991-05-02 |
JPH0444038B2 (en) | 1992-07-20 |
ATE63145T1 (en) | 1991-05-15 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
8364 | No opposition during term of opposition | ||
8330 | Complete renunciation | ||
8380 | Miscellaneous part iii |
Free format text: IM HEFT 8/94, SEITE 2358, SP.1: DIE VEROEFFENTLICHUNG IST ZU STREICHEN |
|
8331 | Complete revocation |