DE20107846U1 - Forming wire - Google Patents
Forming wireInfo
- Publication number
- DE20107846U1 DE20107846U1 DE20107846U DE20107846U DE20107846U1 DE 20107846 U1 DE20107846 U1 DE 20107846U1 DE 20107846 U DE20107846 U DE 20107846U DE 20107846 U DE20107846 U DE 20107846U DE 20107846 U1 DE20107846 U1 DE 20107846U1
- Authority
- DE
- Germany
- Prior art keywords
- fibrous web
- forming screen
- adhesion
- forming
- former
- 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
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 7
- 239000000853 adhesive Substances 0.000 claims description 5
- 230000001070 adhesive effect Effects 0.000 claims description 5
- 230000015572 biosynthetic process Effects 0.000 claims description 3
- 229920002635 polyurethane Polymers 0.000 claims description 3
- 239000004814 polyurethane Substances 0.000 claims description 3
- 229920000642 polymer Polymers 0.000 claims description 2
- 230000035699 permeability Effects 0.000 claims 1
- 239000002390 adhesive tape Substances 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 239000007921 spray Substances 0.000 description 1
- 238000009423 ventilation Methods 0.000 description 1
Classifications
-
- 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
- D21F7/006—Cutting the edges of the paper-web
-
- 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
- D21F1/0027—Screen-cloths
Landscapes
- Paper (AREA)
- Folding Of Thin Sheet-Like Materials, Special Discharging Devices, And Others (AREA)
Description
FormersiebForming screen
Die Erfindung betrifft ein Formersieb eines Formers zur Blattbildung einer Maschine zur Herstellung einer Papier-, Karton-, Tissue- oder einer anderen Faserstoffbahn, welches die Faserstoffbahn an eine folgende Maschineneinheit übergibt und die, vor der Übergabe der Faserstoffbahn abgetrennten Randstreifen der Faserstoffbahn auch nach der Übergabe der Faserstoffbahn weiterführt.The invention relates to a forming screen of a former for sheet formation of a machine for producing a paper, cardboard, tissue or other fibrous web, which transfers the fibrous web to a subsequent machine unit and continues to guide the edge strips of the fibrous web separated before the transfer of the fibrous web even after the transfer of the fibrous web.
Im Former erfolgt die Entwässerung und Herausbildung der Faserstoffbahn, wobei diese von zumindest einem Formersieb geführt wird. Das Formersieb ist luft-und wasserdurchlässig und übergibt die Faserstoffbahn meist an einen Pressfilz einer folgenden Pressenpartie zur weiteren Entwässerung der Faserstoffbahn.The dewatering and formation of the fibrous web takes place in the former, whereby it is guided by at least one forming wire. The forming wire is permeable to air and water and usually transfers the fibrous web to a press felt of a subsequent press section for further dewatering of the fibrous web.
Die im Former gebildete Faserstoffbahn ist im allgemeinen breiter als nötig, da nur der homogen ausgebildete Mittelteil der Faserstoffbahn in der folgenden Maschineneinheit weiter behandelt wird. Daher erfolgt vor der Übergabe der Faserstoffbahn das Abtrennen der Randstreifen mittels Wasserstrahl.The fibrous web formed in the former is generally wider than necessary, since only the homogeneous middle section of the fibrous web is further processed in the following machine unit. Therefore, before the fibrous web is transferred, the edge strips are separated using a water jet.
Die Randstreifen sollen selbst bei hohen Maschinengeschwindigkeiten auch nach der Übergabe des Mittelteils am Formersieb haften.The edge strips should adhere to the forming wire even at high machine speeds after the middle part has been transferred.
Erfindungsgemäß wurde diese Aufgabe dadurch gelöst, dass das Formersieb in Haftbereichen, die gegenüber den Randstreifen der Faserstoffbahn verlaufen, eine erhöhte Adhäsion aufweist. Dies führt zu einer verbesserten Haftung der Randstreifen am Formersieb, so dass es zu keinem Fetzenflug kommt.According to the invention, this object was achieved in that the forming wire has increased adhesion in adhesion areas that run opposite the edge strips of the fibrous web. This leads to improved adhesion of the edge strips to the forming wire, so that no shreds fly away.
Eine Möglichkeit die Adhäsion zu erhöhen besteht darin, dass das Formersieb in den Haftbereichen eine geringere Luftdurchlässigkeit als im dazwischenliegenden Hauptbereich aufweist. Vorzugsweise sollte das Formersieb in den Haftbereichen sogar luftundurchlässig ausgebildet sein. Dies erschwert die Hinterlüftung und damit dasOne way to increase adhesion is to make the forming screen less permeable to air in the adhesion areas than in the main area in between. Preferably, the forming screen should even be airtight in the adhesion areas. This makes rear ventilation more difficult and thus the
(1013737.doc) PF11259:'Cfl5 :?"(1013737.doc) PF11259:'Cfl5 :?"
-2--2-
Ablösen der Randstreifen.Removing the edge strips.
Hierzu sollte das Formersieb in den Haftbereichen mit einem Polymer, vorzugsweise Polyurethan aufgefüllt werden.
5For this purpose, the forming screen should be filled in the adhesion areas with a polymer, preferably polyurethane.
5
Die Haftung lässt sich auch dadurch verstärken, dass das Formersieb in den Haftbereichen auf der, der Faserstoffbahn zugewandten Seite eine glatte Oberfläche besitzt.The adhesion can also be increased by providing the forming wire with a smooth surface in the adhesion areas on the side facing the fibrous web.
Auf Grund der guten Haftung müssen die Haftbereiche nicht die gesamte Breite der Randstreifen überdecken. Vorzugsweise weniger als 60%, insbesondere weniger als 40% der Breite der Randstreifen sind meist ausreichend.Due to the good adhesion, the adhesion areas do not have to cover the entire width of the edge strips. Preferably less than 60%, especially less than 40% of the width of the edge strips is usually sufficient.
Beim Einsatz eines derartigen Formersiebes in einem Former sollte den Haftbereichen nach der Übergabe der Faserstoffbahn zumindest je ein Schaber und/oder Wasser-und/oder Luftdüse zur Entfernung der Randstreifen von den Haftbereichen zugeordnet werden.When using such a forming screen in a former, at least one scraper and/or water and/or air nozzle should be assigned to each adhesion area after the transfer of the fibrous web to remove the edge strips from the adhesion areas.
In Fällen, bei denen der Former von zwei, meist übereinander angeordneten Formersieben gebildet wird, zwischen denen die Faserstoffbahn verläuft, sollten nur ein, vorzugsweise das Formersieb, welches die Faserstoffbahn an die nächste Maschineneinheit übergibt, Haftbereiche besitzen. Dies ist im allgemeinen das untere Formersieb. In cases where the former is formed by two forming wires, usually arranged one above the other, between which the fibrous web runs, only one, preferably the forming wire that transfers the fibrous web to the next machine unit, should have adhesion areas. This is generally the lower forming wire.
Nachfolgend soll die Erfindung an einem Ausführungsbeispiel näher erläutert werden. In der beigefügten Zeichnung zeigt:The invention will be explained in more detail below using an exemplary embodiment. The accompanying drawing shows:
Figur 1: einen schematischen Querschnitt durch einen Endbereich eines Formers und Figur 2: einen Teilschnitt durch ein Formersieb 3 mit Faserstoffbahn 1.Figure 1: a schematic cross-section through an end region of a former and Figure 2: a partial section through a forming screen 3 with fibrous web 1.
Der Former einer Papiermaschine zur Entwässerung und Bildung der Faserstoffbahn 1, das heißt hier konkret der Papierbahn wird von zwei übereinander angeordneten, endlos umlaufenden Formersieben 3, 8 gebildet, zwischen denen die FaserstoffbahnThe former of a paper machine for dewatering and forming the fibrous web 1, that is to say the paper web in this case, is formed by two superimposed, endlessly rotating forming screens 3, 8, between which the fibrous web
(1013737.doc-2) PF112&'*oO 200V<35'-f)7/i\ML": '".: ''.'.'\ . ''.'. \ \ '\ (1013737.doc-2) PF112&'*oO 200V<35'-f)7/i\ML": '". : ''.'.'\ . ''.'. \\'\
-3--3-
1 liegt.1 is located.
Die über Leitwalzen 11 geführten Formersiebe 3, 8 werden am Ende des Formers voneinander getrennt, wobei die Faserstoffbahn 1 mit dem unteren Formersieb 3 mitläuft.The forming wires 3, 8 guided over guide rollers 11 are separated from one another at the end of the former, with the fibrous web 1 running along with the lower forming wire 3.
Danach erfolgt die Abtrennung der Randstreifen 2 vom homogenen Teil der Faserstoffbahn 1 über Wasserstrahldüsen 12. Anschließend wird die Faserstoffbahn 1 von einem, eine besaugte Leitwalze 10 umschlingenden Pressfilz 9 der folgenden Pressenpartie zur weiteren Entwässerung übernommen.The edge strips 2 are then separated from the homogeneous part of the fibrous web 1 via water jet nozzles 12. The fibrous web 1 is then taken over by a press felt 9 of the following press section, which wraps around a vacuumed guide roller 10, for further dewatering.
Das untere Formersieb 3 besitzt gegenüber den Randstreifen 2 Haftbereiche 4 mit erhöhter Adhäsion. Hierzu sind die Haftbereiche 4 des Formersiebes 3 mit Polyurethan aufgefüllt. Während der Hauptbereich 5 des Formersiebes 3 zur Entwässerung der Faserstoffbahn 1 luftdurchlässig ist, sind die Haftbereiche 4 luftundurchlässig. Außerdem ist die, den Randstreifen 2 zugewandte Oberfläche der Haftbereiche 4 glatt ausgebildet. Beide Maßnahmen führen dazu, dass die Randstreifen 2 auch nach der Abgabe der Faserstoffbahn 1 sicher am Formersieb 3 haften.The lower forming wire 3 has adhesive areas 4 with increased adhesion compared to the edge strips 2. For this purpose, the adhesive areas 4 of the forming wire 3 are filled with polyurethane. While the main area 5 of the forming wire 3 is permeable to air for dewatering the fibrous web 1, the adhesive areas 4 are impermeable to air. In addition, the surface of the adhesive areas 4 facing the edge strips 2 is smooth. Both measures ensure that the edge strips 2 adhere securely to the forming wire 3 even after the fibrous web 1 has been released.
Erst später erfolgt die Ablösung der Randstreifen 2 vom Formersieb 3 mittels je einem Schaber 6 und die Abführung in den Pulper. Danach findet eine Reinigung des Formersiebes 3, insbesondere der Haftbereiche 4 über Wasserdüsen 7 statt, wobei Verunreinigungen und das Spritzwasser von einer Saugglocke 13 aufgenommen werden.Only later is the separation of the edge strips 2 from the forming screen 3 by means of a scraper 6 and the removal into the pulper. The forming screen 3, in particular the adhesion areas 4, are then cleaned via water nozzles 7, with impurities and the spray water being absorbed by a suction cup 13.
(1013737.doc-3) PF112f9pE'/ 20^1 &iacgr;)5;(1013737.doc-3) PF112f9pE'/ 20^1 &iacgr;)5;
Claims (8)
Priority Applications (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE20107846U DE20107846U1 (en) | 2000-07-31 | 2001-05-09 | Forming wire |
PCT/EP2001/008866 WO2002010510A1 (en) | 2000-07-31 | 2001-07-31 | Endless belt |
EP01980227A EP1305472A1 (en) | 2000-07-31 | 2001-07-31 | Endless belt |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE10037367A DE10037367A1 (en) | 2000-07-31 | 2000-07-31 | Drying screen guiding fibrous web and wrapping hot drum in papermaking process, includes strongly-adherent edge regions in contact with web |
DE20107846U DE20107846U1 (en) | 2000-07-31 | 2001-05-09 | Forming wire |
Publications (1)
Publication Number | Publication Date |
---|---|
DE20107846U1 true DE20107846U1 (en) | 2001-08-16 |
Family
ID=7650894
Family Applications (3)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DE10037367A Withdrawn DE10037367A1 (en) | 2000-07-31 | 2000-07-31 | Drying screen guiding fibrous web and wrapping hot drum in papermaking process, includes strongly-adherent edge regions in contact with web |
DE20107846U Expired - Lifetime DE20107846U1 (en) | 2000-07-31 | 2001-05-09 | Forming wire |
DE20107844U Expired - Lifetime DE20107844U1 (en) | 2000-07-31 | 2001-05-09 | Dryer fabric |
Family Applications Before (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DE10037367A Withdrawn DE10037367A1 (en) | 2000-07-31 | 2000-07-31 | Drying screen guiding fibrous web and wrapping hot drum in papermaking process, includes strongly-adherent edge regions in contact with web |
Family Applications After (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DE20107844U Expired - Lifetime DE20107844U1 (en) | 2000-07-31 | 2001-05-09 | Dryer fabric |
Country Status (2)
Country | Link |
---|---|
US (1) | US20040020549A1 (en) |
DE (3) | DE10037367A1 (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP1770205A2 (en) * | 2005-09-30 | 2007-04-04 | Voith Patent GmbH | Belt for transferring a fibrous web during manufacture thereof |
EP2250316A1 (en) * | 2008-02-01 | 2010-11-17 | Albany International Corp. | A papermaking fabric and associated methods including the fabric |
Families Citing this family (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE10341183A1 (en) * | 2003-09-06 | 2005-03-31 | Voith Paper Patent Gmbh | Drying sieve for paper, tissue paper or cardboard is air-permeable at the center and air impermeable at the outer margins |
EP1662038A1 (en) * | 2004-10-06 | 2006-05-31 | Voith Fabrics Patent GmbH | Drying fabric |
US7641757B2 (en) * | 2006-01-12 | 2010-01-05 | Pacesetter, Inc. | Method of making a tubular body for a catheter, sheath or lead |
US8751018B1 (en) * | 2007-05-08 | 2014-06-10 | Pacesetter Inc. | Implantable lead and method of making the same |
PL2609253T3 (en) * | 2010-08-23 | 2017-06-30 | Solenis Technologies Cayman, L.P. | Papermaking additives for roll release improvement |
JP5227475B1 (en) * | 2012-09-20 | 2013-07-03 | イチカワ株式会社 | Wet paper transport belt, paper making system and paper making method |
Family Cites Families (15)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2271295A (en) * | 1939-01-10 | 1942-01-27 | Drycor Felt Company | Belting for use as paper felt, industrial felt, pulp felt, drier felt, and the like |
US3867766A (en) * | 1967-12-22 | 1975-02-25 | Huyck Corp | Dryer fabric for a papermaking machine |
US3652390A (en) * | 1970-02-10 | 1972-03-28 | Kimberly Clark Co | Papermaking drainage fabric and stock inlet combination for producing even edged paper web |
US4784190A (en) * | 1980-10-16 | 1988-11-15 | Huyck Corporation | Dryer fabric having longitudinal zones of different permeability |
US4460023A (en) * | 1980-10-16 | 1984-07-17 | Huyck Corporation | Method of making dryer fabric having zones of different permeability |
DE3327056A1 (en) * | 1983-07-27 | 1985-02-14 | J.M. Voith Gmbh, 7920 Heidenheim | MACHINE FOR MAKING A FIBER TRAIN |
US5397438A (en) * | 1990-07-06 | 1995-03-14 | Valmet Paper Machinery, Inc. | Method and device for reduction and equalization of transverse shrinkage of paper in single-wire draw in a drying section |
US5506033A (en) * | 1993-04-07 | 1996-04-09 | Wangner Systems Corporation | Dryer fabric edge seal |
SE504975C2 (en) * | 1995-09-08 | 1997-06-02 | Albany Int Corp | dryer screen |
DE19626420A1 (en) * | 1996-07-01 | 1998-01-08 | Voith Sulzer Papiermasch Gmbh | Pressing device |
US5787602A (en) * | 1997-03-31 | 1998-08-04 | Wangner Systems Corporation | Dryer fabric with adhesive tacky surface for web |
DE19728399A1 (en) * | 1997-07-03 | 1999-01-07 | Voith Sulzer Papiermasch Gmbh | Machine for the production of a continuous material web |
US6503602B1 (en) * | 2000-07-26 | 2003-01-07 | Astenjohnson, Inc. | Dryer fabric with reinforced edges |
FI110133B (en) * | 2000-12-18 | 2002-11-29 | Tamfelt Oyj Abp | A method of making a press felt and a press felt |
US6740203B2 (en) * | 2002-02-15 | 2004-05-25 | Albany International Corp. | Papermaker's nip thickener fabric |
-
2000
- 2000-07-31 DE DE10037367A patent/DE10037367A1/en not_active Withdrawn
-
2001
- 2001-05-09 DE DE20107846U patent/DE20107846U1/en not_active Expired - Lifetime
- 2001-05-09 DE DE20107844U patent/DE20107844U1/en not_active Expired - Lifetime
-
2003
- 2003-01-31 US US10/357,251 patent/US20040020549A1/en not_active Abandoned
Cited By (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP1770205A2 (en) * | 2005-09-30 | 2007-04-04 | Voith Patent GmbH | Belt for transferring a fibrous web during manufacture thereof |
EP1770205A3 (en) * | 2005-09-30 | 2010-04-14 | Voith Patent GmbH | Belt for transferring a fibrous web during manufacture thereof |
EP2250316A1 (en) * | 2008-02-01 | 2010-11-17 | Albany International Corp. | A papermaking fabric and associated methods including the fabric |
EP2250316A4 (en) * | 2008-02-01 | 2011-07-20 | Albany Int Corp | A papermaking fabric and associated methods including the fabric |
EP2644770A1 (en) | 2008-02-01 | 2013-10-02 | Albany International Corp. | A method of determining a width of a paper web |
EP2647759A1 (en) | 2008-02-01 | 2013-10-09 | Albany International Corp. | A papermaking machine section |
US8758568B2 (en) | 2008-02-01 | 2014-06-24 | Albany International Corp. | Papermaking clothing defining a width of a paper web and associated system and method |
Also Published As
Publication number | Publication date |
---|---|
US20040020549A1 (en) | 2004-02-05 |
DE10037367A1 (en) | 2002-02-14 |
DE20107844U1 (en) | 2001-07-26 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
R207 | Utility model specification |
Effective date: 20010920 |
|
R150 | Utility model maintained after payment of first maintenance fee after three years |
Effective date: 20040908 |
|
R151 | Utility model maintained after payment of second maintenance fee after six years |
Effective date: 20070608 |
|
R152 | Utility model maintained after payment of third maintenance fee after eight years |
Effective date: 20090702 |
|
R071 | Expiry of right |