EP1111127B1 - Pressing arrangement - Google Patents
Pressing arrangement Download PDFInfo
- Publication number
- EP1111127B1 EP1111127B1 EP00124021A EP00124021A EP1111127B1 EP 1111127 B1 EP1111127 B1 EP 1111127B1 EP 00124021 A EP00124021 A EP 00124021A EP 00124021 A EP00124021 A EP 00124021A EP 1111127 B1 EP1111127 B1 EP 1111127B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- press
- shoe
- nip
- roll
- felt
- 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
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
- D21F3/0209—Wet presses with extended press nip
- D21F3/0218—Shoe presses
-
- 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
- D21F11/14—Making cellulose wadding, filter or blotting paper
Definitions
- the invention relates to a press arrangement of a machine for producing a tissue web having at least one press nip formed between a shoe press unit and a counter roll, wherein the shoe press unit comprises at least one press shoe opposite the counter roll and a flexible, liquid-tight press belt guided thereover, the counter roll has a smooth surface and the tissue web is guided together with the press belt and at least one felt through the press nip and is subsequently separated from the felt and taken through the smooth surface of the backing roll.
- a press assembly may form part or at least substantially the entire press assembly of the respective tissue machine.
- the aim of the invention is to provide a press arrangement of the type mentioned, with a higher dry content of the press nip leaving tissue web is achieved and guaranteed in accordance with a more economical Tissueherdian.
- a shoe press roll having a press jacket forming the press belt can be provided as the shoe press unit.
- a drying cylinder and in particular a so-called Yankee cylinder is provided.
- the surface of the press belt may be blind drilled and / or grooved.
- the press belt has an open area "f" of f ⁇ 25%.
- the press arrangement according to the invention is advantageously usable in tissue machines such as, in particular, a suction breast roll former, twin-wire formers, crescent formers, four-wire former and / or the like and / or in combination with "through-air-drying" concepts.
- the angle ⁇ between the tangent 26 applied to the drying cylinder 18 at the end of the press nip 14 and the felt 24 leaving the press nip 14 is ⁇ 20 °.
- the surface of the press cover 22 may be blind drilled and / or grooved.
- the press jacket 22 may in particular have an open area "f" of f ⁇ 25%.
Landscapes
- Paper (AREA)
- Auxiliary Devices For And Details Of Packaging Control (AREA)
- Press Drives And Press Lines (AREA)
- Glass Compositions (AREA)
- Vehicle Body Suspensions (AREA)
- Cyclones (AREA)
Abstract
Description
Die Erfindung betrifft eine Pressenanordnung einer Maschine zur Herstellung einer Tissuebahn mit wenigstens einem zwischen einer Schuhpreßeinheit und einer Gegenwalze gebildeten Preßspalt, wobei die Schuhpreßeinheit wenigstens einen der Gegenwalze gegenüberliegenden Preßschuh und ein über diesen geführtes flexibles, flüssigkeitsdichtes Preßband umfaßt, die Gegenwalze eine glatte Oberfläche besitzt und die Tissuebahn zusammen mit dem Preßband sowie wenigstens einem Filz durch den Preßspalt geführt ist und im Anschluß daran vom Filz getrennt und durch die glatte Oberfläche der Gegenwalze mitgenommen wird. Eine solche Pressenanordnung kann einen Teil oder zumindest im wesentlichen die gesamte Pressenanordnung der betreffenden Tissuemaschine bilden.The invention relates to a press arrangement of a machine for producing a tissue web having at least one press nip formed between a shoe press unit and a counter roll, wherein the shoe press unit comprises at least one press shoe opposite the counter roll and a flexible, liquid-tight press belt guided thereover, the counter roll has a smooth surface and the tissue web is guided together with the press belt and at least one felt through the press nip and is subsequently separated from the felt and taken through the smooth surface of the backing roll. Such a press assembly may form part or at least substantially the entire press assembly of the respective tissue machine.
Bei einer aus der
Das Dokument
In dem Dokument
Ziel der Erfindung ist, eine Pressenanordnung der eingangs genannten Art zu schaffen, mit der ein höherer Trockengehalt der den Preßspalt verlassenden Tissuebahn erzielbar und entsprechend einer wirtschaftlichere Tissueherstellung gewährleistet ist.The aim of the invention is to provide a press arrangement of the type mentioned, with a higher dry content of the press nip leaving tissue web is achieved and guaranteed in accordance with a more economical Tissueherstellung.
Diese Aufgabe wird nach der Erfindung dadurch gelöst, daß der Winkel zwischen der am Ende des Preßspaltes an die Gegenwalze angelegten Tangente und wenigstens einem aus dem Preßspalt auslaufenden Filz ≥ 10°, insbesondere ≥ 15°, insbesondere ≥ 18° und vorzugsweise ≥ 20° ist.This object is achieved according to the invention in that the angle between the applied at the end of the press nip to the mating roll tangent and at least one expiring from the press nip felt ≥ 10 °, in particular ≥ 15 °, in particular ≥ 18 ° and preferably ≥ 20 ° ,
Aufgrund dieser Ausbildung wird auf wirtschaftliche Weise ein höherer Trockengehalt der Tissuebahn nach der Presse erreicht.Due to this design, a higher dry content of the tissue web is achieved after the press in an economical manner.
Als Schuhpreßeinheit kann insbesondere eine Schuhpreßwalze mit einem das Preßband bildenden Preßmantel vorgesehen sein.In particular, a shoe press roll having a press jacket forming the press belt can be provided as the shoe press unit.
Als Gegenwalze ist vorzugsweise ein Trockenzylinder und insbesondere ein sogenannter Yankee-Zylinder vorgesehen.As counter-roll preferably a drying cylinder and in particular a so-called Yankee cylinder is provided.
Die Oberfläche des Preßbandes kann blindgebohrt und/oder gerillt sein.The surface of the press belt may be blind drilled and / or grooved.
Vorteilhafterweise besitzt das Preßband eine offene Fläche "f" von f ≥ 25 %.Advantageously, the press belt has an open area "f" of f ≥ 25%.
Für eine offene Fläche von beispielsweise f = 36 % eines gerillten Preßbandes bzw. Preßmantels konnte bei einem Ablaufwinkel des Filzes von a = 20° eine Trockengehaltssteigerung von 4,5 % gegenüber dem Trockengehalt erzielt werden, der, anstelle einer Schuhpreßwalze, mit einer konventionellen Saugpreßwalze erreicht wird.For an open area of, for example f = 36% of a grooved press belt or press jacket could at a flow angle of the felt of a = 20 °, a dry content increase of 4.5% compared to the dry content can be achieved, which, instead of a shoe press roll, with a conventional Saugpreßwalze is reached.
Die erfindungsgemäße Pressenanordnung ist vorteilhafterweise in Tissuemaschinen wie insbesondere einem Saugbrustwalzenformer, Doppelsiebformer, Crescent-Former, Langsiebformer und/oder dergleichen und/oder in Kombination mit "Through-Air-Drying"-Konzepten verwendbar.The press arrangement according to the invention is advantageously usable in tissue machines such as, in particular, a suction breast roll former, twin-wire formers, crescent formers, four-wire former and / or the like and / or in combination with "through-air-drying" concepts.
Die Erfindung wird im folgenden anhand eines Ausführungsbeispiels unter Bezugnahme auf die Zeichnung näher erläutert:
- In dieser zeigt die einzige Figur eine schematische Teildarstellung einer
Pressenanordnung 10 einer Maschine zur Herstellung einerTissuebahn 12. - Die
Pressenanordnung 10 umfaßt einen in Bahnlaufrichtung Lverlängerten Preßspalt 14, der zwischen einer alsSchuhpreßwalze 16 vorgesehenen Schuhpreßeinheit und einer alsTrockenzylinder 18, beispielsweise Yankee-Zylinder, vorgesehenen Gegenwalze gebildet ist. - Die
Schuhpreßwalze 16 umfaßt einen demTrockenzylinder 18gegenüberliegenden Preßschuh 20 und einen über diesen geführten, durch ein flexibles, flüssigkeitsdichtes Preßbandgebildeten Preßmantel 22. - Die Tissuebahn 12 ist zusammen mit dem Preßmantel 22 sowie einem
Filz 24 durch denPreßspalt 14 geführt. Im Anschluß an denPreßspalt 14 wird dieTissuebahn 12 vomFilz 24 getrennt und durch die glatte Oberfläche desTrockenzylinders 18 mitgenommen.
- In this, the single figure shows a schematic partial representation of a
press arrangement 10 of a machine for producing atissue web 12. - The
press assembly 10 comprises a lengthened in the web running directionL press nip 14 which is formed between an intended as ashoe press roller 16 Schuhpreßeinheit and as a dryingcylinder 18, for example Yankee cylinder, provided counter-roller. - The
shoe press roll 16 comprises apress shoe 20 opposite the dryingcylinder 18 and apress jacket 22 guided over it and formed by a flexible, liquid-tight press belt. - The
tissue web 12 is guided together with the Preßmantel 22 and a felt 24 through thepress nip 14. Following thepress nip 14, thetissue web 12 is separated from thefelt 24 and taken through the smooth surface of the dryingcylinder 18.
Der Winkel a zwischen der am Ende des Preßspaltes 14 an den Trockenzylinder 18 angelegten Tangente 26 und dem aus den Preßspalt 14 auslaufenden Filz 24 ist ≥ 20°.The angle α between the
Die Oberfläche des Preßmantels 22 kann blindgebohrt und/oder gerillt sein.The surface of the
Der Preßmantel 22 kann insbesondere eine offene Fläche "f" von f ≥ 25 % besitzen.The
- 1010
- PressenanordnungPress arrangement
- 1212
- Tissuebahntissue web
- 1414
- Preßspaltnip
- 1616
- Schuhpreßwalzeshoe press
- 1818
- Trockenzylinderdrying cylinders
- 2020
- Preßschuhpress shoe
- 2222
- Preßmantelpress jacket
- 2424
- Filzfelt
- 2626
- Tangentetangent
- LL
- BahnlaufrichtungWeb direction
Claims (6)
- Pressing arrangement (10) for a machine for producing a tissue web (12), having at least one press nip (14) formed between a shoe press unit (16) and a mating roll (18), the shoe press unit (16) comprising at least one press shoe (20) located opposite the mating roll (18) and a flexible, liquid-tight press belt (22) led over the said press shoe (20), the mating roll (18) having a smooth surface and the tissue web (12) being led through the press nip (14) together with the press belt (22) and at least one felt (24) and, following that, being separated from the felt (24) and carried along by the smooth surface of the mating roll (18),
characterized
in that the angle (α) between the tangent to the mating roll (18) at the end of the press nip (14) and at least one felt (24) running out of the press nip (14) is ≥ 10°, in particular ≥ 15°, in particular ≥ 18° and preferably ≥20°. - Pressing arrangement according to Claim 1, characterized in that the shoe press unit provided is a shoe press roll (16) having a press shell (22) forming the press belt.
- Pressing arrangement according to Claim 1 or 2, characterized in that the mating roll provided is a drying cylinder (18) and in particular what is known as a Yankee cylinder.
- Pressing arrangement according to one of the preceding claims, characterized in that the surface of the press belt (22) is blind-drilled and/or grooved.
- Pressing arrangement according to one of the preceding claims, characterized in that the press belt has an open area "f" of f ≥ 25%.
- Use of a pressing arrangement according to one of the preceding claims in tissue machines, such as in particular a suction press roll former, twin-wire former, Crescent former, Fourdrinier former and/or the like and/or in combination with "through-air drying" concepts.
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE19962708A DE19962708A1 (en) | 1999-12-23 | 1999-12-23 | Press arrangement |
DE19962708 | 1999-12-23 |
Publications (4)
Publication Number | Publication Date |
---|---|
EP1111127A2 EP1111127A2 (en) | 2001-06-27 |
EP1111127A9 EP1111127A9 (en) | 2001-12-19 |
EP1111127A3 EP1111127A3 (en) | 2002-01-23 |
EP1111127B1 true EP1111127B1 (en) | 2009-01-28 |
Family
ID=7934297
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP00124021A Expired - Lifetime EP1111127B1 (en) | 1999-12-23 | 2000-11-04 | Pressing arrangement |
Country Status (7)
Country | Link |
---|---|
US (1) | US6488814B2 (en) |
EP (1) | EP1111127B1 (en) |
AT (1) | ATE422009T1 (en) |
BR (1) | BRPI0006406A2 (en) |
CA (2) | CA2650660C (en) |
DE (2) | DE19962708A1 (en) |
PL (1) | PL196244B1 (en) |
Families Citing this family (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE10129613A1 (en) * | 2001-06-20 | 2003-01-02 | Voith Paper Patent Gmbh | Method and device for producing a fibrous web provided with a three-dimensional surface structure |
DE10157694B4 (en) * | 2001-11-24 | 2007-04-12 | Voith Patent Gmbh | Glättzylinderanordnung |
ES2635323T3 (en) | 2011-12-07 | 2017-10-03 | Valmet Aktiebolag | Press roller with extended contact area for papermaking machine and tissue paper manufacturing process |
WO2013158010A1 (en) | 2012-04-19 | 2013-10-24 | Metso Paper Sweden Ab | An extended nip roll, an extended nip press making use of the extended nip roll, a papermaking machine and a method of operating an extended nip press |
Family Cites Families (14)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE3641191A1 (en) * | 1986-12-03 | 1988-06-09 | Oberdorfer Fa F | METHOD AND DEVICE FOR THE PRODUCTION OF STRONG STABILITY, LIQUID-IMPERMEABLE, BENDABLE PRESSING BANDS, IN PARTICULAR FOR WET PRESSING OF PAPER MACHINES |
DE3742848C3 (en) * | 1987-12-17 | 1996-06-13 | Escher Wyss Gmbh | Press section of a paper machine |
US5062924A (en) * | 1988-04-08 | 1991-11-05 | Beloit Corporation | Blanket for an extended nip press with anisotropic woven base layers |
DE4020589A1 (en) * | 1990-06-28 | 1992-01-09 | Oberdorfer Fa F | Coated press band for paper making machines - has core fabric with flattened warp and/or weft threads |
DE4216264C2 (en) * | 1992-05-16 | 2000-05-25 | Voith Sulzer Papiermasch Gmbh | Process for drying and loosening a paper web |
DE4340041A1 (en) * | 1993-11-24 | 1994-04-07 | Voith Gmbh J M | Paper-making machine press section - has two sections with a web transport roller between the shoe presses for consistent character on both sides of the web |
FI109477B (en) * | 1995-02-02 | 2002-08-15 | Metso Paper Inc | Press section with equalizing press in paper machine |
DE29506352U1 (en) * | 1995-04-12 | 1995-06-01 | Voith Sulzer Papiermaschinen GmbH, 89522 Heidenheim | Press section |
US5908536A (en) * | 1995-10-03 | 1999-06-01 | Valmet Corporation | Method and machine for removing water from a paper or board web by pressing |
DE19654198A1 (en) * | 1996-12-23 | 1998-06-25 | Voith Sulzer Papiermasch Gmbh | Machine for the production of a fibrous web |
SE512799C2 (en) * | 1998-09-22 | 2000-05-15 | Valmet Karlstad Ab | Press section and shoe press therefore and counter roll for the shoe press |
US6309512B1 (en) | 1998-09-22 | 2001-10-30 | Valmet Karlstad Ab | Device for impulse-pressing a web |
US6248210B1 (en) * | 1998-11-13 | 2001-06-19 | Fort James Corporation | Method for maximizing water removal in a press nip |
DE19860687A1 (en) * | 1998-12-29 | 2000-07-06 | Voith Sulzer Papiermasch Gmbh | Machine and method for producing a fibrous web |
-
1999
- 1999-12-23 DE DE19962708A patent/DE19962708A1/en not_active Withdrawn
-
2000
- 2000-11-04 AT AT00124021T patent/ATE422009T1/en active
- 2000-11-04 DE DE50015542T patent/DE50015542D1/en not_active Expired - Lifetime
- 2000-11-04 EP EP00124021A patent/EP1111127B1/en not_active Expired - Lifetime
- 2000-12-08 BR BRPI0006406A patent/BRPI0006406A2/en unknown
- 2000-12-21 PL PL344739A patent/PL196244B1/en unknown
- 2000-12-22 CA CA2650660A patent/CA2650660C/en not_active Expired - Fee Related
- 2000-12-22 CA CA002329554A patent/CA2329554C/en not_active Expired - Lifetime
- 2000-12-22 US US09/741,886 patent/US6488814B2/en not_active Expired - Lifetime
Also Published As
Publication number | Publication date |
---|---|
DE19962708A1 (en) | 2001-06-28 |
US20010035103A1 (en) | 2001-11-01 |
CA2329554A1 (en) | 2001-06-23 |
EP1111127A3 (en) | 2002-01-23 |
CA2650660C (en) | 2011-02-15 |
EP1111127A9 (en) | 2001-12-19 |
CA2329554C (en) | 2009-12-15 |
DE50015542D1 (en) | 2009-03-19 |
US6488814B2 (en) | 2002-12-03 |
EP1111127A2 (en) | 2001-06-27 |
CA2650660A1 (en) | 2001-06-23 |
BRPI0006406A2 (en) | 2017-01-17 |
ATE422009T1 (en) | 2009-02-15 |
PL196244B1 (en) | 2007-12-31 |
PL344739A1 (en) | 2001-07-02 |
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