EP1460171B1 - Procédé de traitement d'une bande fibreuse - Google Patents
Procédé de traitement d'une bande fibreuse Download PDFInfo
- Publication number
- EP1460171B1 EP1460171B1 EP04101045A EP04101045A EP1460171B1 EP 1460171 B1 EP1460171 B1 EP 1460171B1 EP 04101045 A EP04101045 A EP 04101045A EP 04101045 A EP04101045 A EP 04101045A EP 1460171 B1 EP1460171 B1 EP 1460171B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- web
- fibrous web
- steam
- smoothing
- gap
- 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.)
- Expired - Lifetime
Links
- 238000000034 method Methods 0.000 title claims abstract description 11
- 230000001105 regulatory effect Effects 0.000 claims abstract description 4
- 238000009499 grossing Methods 0.000 claims description 13
- 238000001035 drying Methods 0.000 abstract description 4
- 238000000926 separation method Methods 0.000 abstract description 3
- 230000001737 promoting effect Effects 0.000 abstract 1
- 239000000243 solution Substances 0.000 description 3
- 239000011248 coating agent Substances 0.000 description 2
- 238000000576 coating method Methods 0.000 description 2
- 239000007788 liquid Substances 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 239000007921 spray Substances 0.000 description 2
- 238000010793 Steam injection (oil industry) Methods 0.000 description 1
- 239000000853 adhesive Substances 0.000 description 1
- 230000001070 adhesive effect Effects 0.000 description 1
- 238000007664 blowing Methods 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- 235000011837 pasties Nutrition 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Images
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
- D21F3/02—Wet presses
- D21F3/0272—Wet presses in combination with suction or blowing devices
-
- D—TEXTILES; PAPER
- D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
- D21F—PAPER-MAKING MACHINES; METHODS OF PRODUCING PAPER THEREON
- D21F5/00—Dryer section of machines for making continuous webs of paper
- D21F5/02—Drying on cylinders
- D21F5/04—Drying on cylinders on two or more drying cylinders
- D21F5/042—Drying on cylinders on two or more drying cylinders in combination with suction or blowing devices
-
- D—TEXTILES; PAPER
- D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
- D21F—PAPER-MAKING MACHINES; METHODS OF PRODUCING PAPER THEREON
- D21F7/00—Other details of machines for making continuous webs of paper
- D21F7/008—Steam showers
-
- D—TEXTILES; PAPER
- D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
- D21G—CALENDERS; ACCESSORIES FOR PAPER-MAKING MACHINES
- D21G1/00—Calenders; Smoothing apparatus
Definitions
- the invention relates to a method for treating a fibrous web, in particular a paper or board web within a machine for producing and / or finishing the fibrous web, wherein the fibrous web on its path through the machine a variety of treatment serving rollers, in particular roller pairs, happens and an opening discharge gap is formed between a respective roller and the fibrous web extending from the respective roller.
- the DE 43 03 315 shows a method for cleaning roll surfaces, wherein the surface with moist air, possibly also steam, is applied, so that a moisture film reduces the doctor blade wear.
- the DE 413 177 C describes a device for lifting a moving web from a roll by means of steam or air jets.
- the invention is therefore based on the object to develop a method in which the disadvantages of the prior art are avoidable.
- the inventors have recognized that for a reduction of the adhesion tendency of the fibrous web on the smooth smoothing roll, not the production of a steam cushion at the inlet gap is suitable, but an improved web detachment is achieved by the back of the steam - ie blown at the outlet gap, or outlet gusset becomes.
- the backward injection is that due to the negative pressure at the draw line of the steam is sucked formally and so safely arrives at the gusset point.
- the vapor condenses, whereby the temperature of the liquid located in the outlet gap (made of, for example, pressed-out water and adhesive substances of the fibrous web) is increased and thus the viscosity and the surface tension are lowered. This reduces the force with which the web must be pulled off the roller. The risk of demolition is significantly reduced.
- the inventive method is used in smoothing the fibrous web by means of heated, known per se soft and / or Hartnip smoothing rollers.
- the advantage here is lower web pull-off forces.
- a compensation of the smoothing adjusting moisture loss is achieved in the nip and also a pre-moistening for a following smoothing nip possible.
- the inventive method is realized by at least one spray nozzle directed steam, in particular superheated steam in the existing between the fibrous web and the respective roller discharge gap.
- a single from the driver or drive side of the machine acting and over the entire width of the machine or the width of the outlet gap reaching nozzle, or a traversing over said width nozzle or a plurality of individual nozzles can be used.
- the web 3 runs in the direction of the arrow L through the smooth nip N.
- the nozzle 7 and 7a are associated above the web 3 of the roller 8, whereas the nozzle 7a below the web 3 of the roller 9 is assigned.
- the nozzle 7 can be operated at the same time as the nozzle 7a. Depending on the requirement, only one of the nozzles 7 or 7a can act.
- FIG. 7 a and 7 a may each have a single outflow cross-section extending over the respective outlet gap 5.
- the introduction of the vapor can also take place from outside the width of the web, acting in the transverse direction to the opposite edge of the web out beam.
- a traversing nozzle is also conceivable.
- the amount of steam can be controlled as a function of the web tension of the web 3 and also regulated.
- the said rolls 8 and 9 or the pair of rolls have a smooth surface and, despite the high web speed of ⁇ 1800 m / min, the detachment behavior of the fibrous web 3 noticeably improves due to the hot steam injection.
Landscapes
- Paper (AREA)
- Nonwoven Fabrics (AREA)
- Chemical Or Physical Treatment Of Fibers (AREA)
Claims (4)
- Procédé de traitement d'une bande de matière fibreuse, en particulier d'une bande de papier ou de carton à l'intérieur d'une machine de fabrication et/ou de traitement de celle-ci, dans lequel la bande de matière fibreuse franchit, au cours de son trajet à travers la machine, une pluralité de rouleaux servant au traitement, et il se forme une fente de sortie qui s'ouvre entre un rouleau concerné et la bande de matière fibreuse quittant le rouleau concerné, dans lequel la bande de matière fibreuse est lissée au moyen de rouleaux lisseurs chauffés (8, 9) à emprise douce et/ou dure, dans lequel le rouleau concerné est un rouleau lisseur (8, 9) d'une ou de plusieurs paires de rouleaux lisseurs pour le lissage de surface de la bande de matière fibreuse, et dans lequel la fente de sortie (5) est exposée à de la vapeur, dans lequel on améliore ainsi le pouvoir de décollement de la bande de matière fibreuse humide en mouvement (3) du rouleau lisseur (8, 9) et on préhumidifie la bande de matière fibreuse (3) pour une emprise de lissage qui suit.
- Procédé selon la revendication 1, caractérisé en ce que l'on utilise de la vapeur surchauffée.
- Procédé selon la revendication 1 ou 2,
caractérisé en ce que l'on commande ou on régule la quantité de vapeur à injecter. - Procédé selon la revendication 3, caractérisé en ce que l'on commande ou on régule la quantité de vapeur en fonction de la traction de la bande (3).
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE10311993A DE10311993A1 (de) | 2003-03-19 | 2003-03-19 | Verfahren zur Behandlung einer Faserstoffbahn |
DE10311993 | 2003-03-19 |
Publications (3)
Publication Number | Publication Date |
---|---|
EP1460171A2 EP1460171A2 (fr) | 2004-09-22 |
EP1460171A3 EP1460171A3 (fr) | 2005-05-25 |
EP1460171B1 true EP1460171B1 (fr) | 2010-01-20 |
Family
ID=32797954
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP04101045A Expired - Lifetime EP1460171B1 (fr) | 2003-03-19 | 2004-03-15 | Procédé de traitement d'une bande fibreuse |
Country Status (3)
Country | Link |
---|---|
EP (1) | EP1460171B1 (fr) |
AT (1) | ATE455900T1 (fr) |
DE (2) | DE10311993A1 (fr) |
Family Cites Families (10)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US1605067A (en) * | 1926-11-02 | Paper-making machine | ||
US1595478A (en) | 1920-05-25 | 1926-08-10 | Minton Ogden | Method of stripping and feeding paper and apparatus |
US5393383A (en) | 1991-12-19 | 1995-02-28 | Valmet Paper Machinery Inc. | Compact press section with closed draw of the web in a paper machine |
DE4303315A1 (en) * | 1993-02-05 | 1993-06-24 | Voith Gmbh J M | Paper-making roller scraper - acts together with moist air to reduce blade wear |
DE19731100A1 (de) * | 1997-07-19 | 1999-01-21 | Voith Sulzer Papiermasch Gmbh | Verfahren und Vorrichtung zur Beeinflussung des Haftverhaltens einer Faserstoffbahn |
DE19741517A1 (de) | 1997-09-20 | 1999-03-25 | Voith Sulzer Papiermasch Gmbh | Verfahren zur Verringerung der Haftung einer feuchten Faserstoffbahn an einer rotierenden Walze |
DE19800955A1 (de) | 1998-01-13 | 1999-07-15 | Voith Sulzer Papiertech Patent | Vorrichtung zum Auftragen eines flüssigen oder pastösen Auftragsmediums auf eine laufende Materialbahn, insbesondere aus Papier oder Karton |
FI113883B (fi) * | 1999-08-12 | 2004-06-30 | Runtech Systems Oy | Menetelmä ja laitteisto materiaalirainan käsittelemiseksi ja materiaalirainan käyttäytymisen hallitsemiseksi |
DE10024296B4 (de) * | 2000-05-17 | 2008-11-20 | Voith Patent Gmbh | Maschine zur Herstellung einer Materialbahn |
DE10157690C1 (de) * | 2001-11-24 | 2003-02-20 | Voith Paper Patent Gmbh | Verfahren und Kalander zum Glätten einer Faserstoffbahn |
-
2003
- 2003-03-19 DE DE10311993A patent/DE10311993A1/de not_active Withdrawn
-
2004
- 2004-03-15 EP EP04101045A patent/EP1460171B1/fr not_active Expired - Lifetime
- 2004-03-15 DE DE502004010655T patent/DE502004010655D1/de not_active Expired - Lifetime
- 2004-03-15 AT AT04101045T patent/ATE455900T1/de active
Also Published As
Publication number | Publication date |
---|---|
EP1460171A3 (fr) | 2005-05-25 |
DE10311993A1 (de) | 2004-10-14 |
ATE455900T1 (de) | 2010-02-15 |
EP1460171A2 (fr) | 2004-09-22 |
DE502004010655D1 (de) | 2010-03-11 |
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