EP2128334A1 - Press felt - Google Patents

Press felt Download PDF

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Publication number
EP2128334A1
EP2128334A1 EP20090160112 EP09160112A EP2128334A1 EP 2128334 A1 EP2128334 A1 EP 2128334A1 EP 20090160112 EP20090160112 EP 20090160112 EP 09160112 A EP09160112 A EP 09160112A EP 2128334 A1 EP2128334 A1 EP 2128334A1
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EP
European Patent Office
Prior art keywords
foam material
support structure
belt
foam
machine
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.)
Withdrawn
Application number
EP20090160112
Other languages
German (de)
French (fr)
Inventor
Uwe Dr. Köckritz
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Voith Patent GmbH
Original Assignee
Voith Patent GmbH
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Voith Patent GmbH filed Critical Voith Patent GmbH
Publication of EP2128334A1 publication Critical patent/EP2128334A1/en
Withdrawn legal-status Critical Current

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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
    • D21F7/08—Felts
    • D21F7/083—Multi-layer felts
    • 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
    • D21F3/029—Wet presses using special water-receiving belts
    • D—TEXTILES; PAPER
    • D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
    • D21G—CALENDERS; ACCESSORIES FOR PAPER-MAKING MACHINES
    • D21G1/00—Calenders; Smoothing apparatus
    • D21G1/0066—Calenders; Smoothing apparatus using a special calendering belt
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T428/00—Stock material or miscellaneous articles
    • Y10T428/249921—Web or sheet containing structurally defined element or component
    • Y10T428/249953—Composite having voids in a component [e.g., porous, cellular, etc.]
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T442/00—Fabric [woven, knitted, or nonwoven textile or cloth, etc.]
    • Y10T442/20—Coated or impregnated woven, knit, or nonwoven fabric which is not [a] associated with another preformed layer or fiber layer or, [b] with respect to woven and knit, characterized, respectively, by a particular or differential weave or knit, wherein the coating or impregnation is neither a foamed material nor a free metal or alloy layer
    • Y10T442/2025—Coating produced by extrusion
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T442/00—Fabric [woven, knitted, or nonwoven textile or cloth, etc.]
    • Y10T442/20—Coated or impregnated woven, knit, or nonwoven fabric which is not [a] associated with another preformed layer or fiber layer or, [b] with respect to woven and knit, characterized, respectively, by a particular or differential weave or knit, wherein the coating or impregnation is neither a foamed material nor a free metal or alloy layer
    • Y10T442/2139—Coating or impregnation specified as porous or permeable to a specific substance [e.g., water vapor, air, etc.]
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T442/00—Fabric [woven, knitted, or nonwoven textile or cloth, etc.]
    • Y10T442/30—Woven fabric [i.e., woven strand or strip material]
    • Y10T442/3325—Including a foamed layer or component

Definitions

  • press felt for a paper machine known, which comprises a layer of elastic foam material, which is connected to a support structure made of fiber material by needling.
  • the constructed of polymer material foam is closed cell.
  • a support structure for example, woven material is used with running in a machine longitudinal direction and a cross-machine direction yarns.
  • a band or press felt constructed in this way, a structure is created which counteracts the hydraulic or capillary forces, which want to pull water back onto the surface of a paper layer to be produced. In this way, a rewetting effect of the strip material to be produced can be minimized.
  • the EP 0 367 739 B1 discloses a method for coating a belt for a papermaking machine, in which process a thin layer of polymeric foam material is applied to the upper surface of a press fabric.
  • the foam material remains primarily on the surface of the tissue or may partially penetrate into the surface of the tissue.
  • the support structure is completely foamed into the foam material, that is embedded. This allows easy manufacturability, since the foam material on the one hand and the support structure on the other hand are not to be connected in additional operations with each other.
  • the foam material on the one hand and the support structure on the other hand are not to be connected in additional operations with each other.
  • the selection of the foam material the requirements arising in interaction with the web material to be produced can be optimally taken into account, while the selection of the carrying structure can take into account the mechanical loads occurring in the machine longitudinal direction and in the cross machine direction.
  • the foam material used is preferably open-celled.
  • thermoplastic polymer material preferably polyurethane material
  • the foam material may alternatively or additionally comprise thermosetting polymeric material, preferably melamine-formaldehyde.
  • the foam material can be made with the support structure foamed therein in a film extrusion process.
  • Fig. 1 shows a band constructed according to the invention in section.
  • band 10 which can be used for example in a press section of a machine for the production of paper or cardboard, comprises a support structure 12.
  • this is designed as a fabric or scrim with in a tape longitudinal direction running longitudinal threads 14 and extending in a transverse direction of the tape transverse threads 16.
  • the tape longitudinal direction of the machine direction and the tape transverse direction of the machine transverse direction correspond.
  • the support structure 12 is passed through an extrusion head in a film extrusion process and thereby foamed with open-cell foam material 18.
  • the foam material 18 is the support structure completely embedding provided on this and kept very stable.
  • the surfaces formed on the foam material 18 may form, for example, a strip material contact surface 20 and a machine contact surface 22.
  • the foam material 18 may, for example, thermoplastic polymer material, such as. As polyurethane material, and has due to its open-cell structure on an excellent water laxative property. By adjusting the size of the cells present in the foam material 18, the selection of the foam material per se and its dimensions, it becomes possible to optimally take into account the requirements in the area of a press section with regard to the dehumidifying properties, with regard to the abrasion properties and also the pressure-elastic properties. The mechanical stability in the longitudinal and transverse directions is ensured by the support structure 12. This can, as already mentioned, for example, be designed as a clutch. Of course, differently structured support structures, such as a fabric, a felt or nonwoven material or a net-like material can be used.
  • a plurality of layers of foam material which layers may differ in their structural or physical properties.
  • a layer of nonwoven or felt material on at least one side in order to connect, for example by needling, to the underlying foam material layer. This also makes it possible to adapt the properties of such a strip 10 to the requirements occurring in a paper machine.

Abstract

The belt (10) has an open-cell foam material layer (18) bonded on a side with a carrier structure (12). The foam material layer surrounds the carrier structure, and comprises an open-celled construction, where the foam material layer is made of thermoplastic polymer material, polyurethane material, duroplastic polymer material or melamine-formaldehyde. The foam material layer is produced in a film extrusion process together with the structure. The carrier structure is made of fibrous material, woven material, laid fabric structure or warp knit fabric. An independent claim is also included for a method for production of a belt for a machine to produce a fibrous web.

Description

Die vorliegende Erfindung betrifft ein Band für eine Maschine zur Herstellung von Bahnmaterial, insbesondere Papier oder Karton, umfassend eine Tragestruktur und wenigstens eine Lage aus Schaumstoffmaterial.The present invention relates to a belt for a machine for producing web material, in particular paper or cardboard, comprising a support structure and at least one layer of foam material.

Aus der EP 0 355 277 B1 ist ein sog. Pressfilz für eine Papiermaschine bekannt, welcher eine Lage aus elastischem Schaumstoffmaterial umfasst, die mit einer Tragestruktur aus Fasermaterial durch Vernadeln verbunden ist. Der aus Polymermaterial aufgebaute Schaumstoff ist geschlossenzellig ausgebildet. Als Tragestruktur wird beispielsweise gewebtes Material eingesetzt mit in einer Maschinenlängsrichtung und einer Maschinenquerrichtung verlaufenden Garnen. Mit einem derart aufgebauten Band bzw. Pressfilz wird eine Struktur geschaffen, welche den hydraulischen bzw. Kapillarkräften, welche Wasser zurück an die Oberfläche einer zu fertigenden Papierlage ziehen wollen, entgegengewirkt. Auf diese Art und Weise kann ein Rückbefeuchtungseffekt des zu fertigenden Bandmaterials minimiert werden.From the EP 0 355 277 B1 is a so-called press felt for a paper machine known, which comprises a layer of elastic foam material, which is connected to a support structure made of fiber material by needling. The constructed of polymer material foam is closed cell. As a support structure, for example, woven material is used with running in a machine longitudinal direction and a cross-machine direction yarns. With a band or press felt constructed in this way, a structure is created which counteracts the hydraulic or capillary forces, which want to pull water back onto the surface of a paper layer to be produced. In this way, a rewetting effect of the strip material to be produced can be minimized.

Die EP 0 367 739 B1 offenbart ein Verfahren zum Beschichten eines Bandes für eine Papiermaschine, bei welchem Verfahren eine dünne Schicht aus polymerischem Schaumstoffmaterial auf die obere Oberfläche eines Pressgewebes aufgebracht wird. Dabei verbleibt das Schaumstoffmaterial in erster Linie auf der Oberfläche des Gewebes bzw. kann teilweise in die Oberfläche des Gewebes eindringen.The EP 0 367 739 B1 discloses a method for coating a belt for a papermaking machine, in which process a thin layer of polymeric foam material is applied to the upper surface of a press fabric. In this case, the foam material remains primarily on the surface of the tissue or may partially penetrate into the surface of the tissue.

Es ist die Aufgabe der vorliegenden Erfindung, ein Band für eine Maschine zur Herstellung von Bahnmaterial sowie ein Verfahren zur Herstellung eines derartigen Bandes vorzusehen, mit welchem in einfacher Weise ein die in Presssektion auftretenden Anforderungen erfüllendes Band realisierbar ist.It is the object of the present invention to provide a belt for a machine for the production of web material and a method for producing such a belt, with which a simple in. The in Pressing section occurring requirements fulfilling tape is feasible.

Gemäß der vorliegenden Erfindung wird diese Aufgabe gelöst durch ein Band für eine Maschine zur Herstellung von Bahnmaterial, insbesondere Papier oder Karton, umfassend eine Tragestruktur und wenigstens eine Lage aus Schaumstoffmaterial. Erfindungsgemäß ist dabei weiter vorgesehen, dass die Tragestruktur in das Schaumstoffmaterial eingeschäumt ist.According to the present invention, this object is achieved by a belt for a machine for producing web material, in particular paper or cardboard, comprising a support structure and at least one layer of foam material. According to the invention it is further provided that the support structure is foamed into the foam material.

Bei dem erfindungsgemäßen Band ist also die Tragestruktur vollständig in das Schaumstoffmaterial eingeschäumt, also eingebettet. Dadurch wird eine einfache Herstellbarkeit ermöglicht, da das Schaumstoffmaterial einerseits und die Tragestruktur andererseits nicht in zusätzlichen Arbeitsgängen miteinander zu verbinden sind. Andererseits kann insbesondere durch die Auswahl des Schaumstoffmaterials den in Wechselwirkung mit dem zu fertigenden Bahnmaterial auftretenden Anforderungen optimiert Rechnung getragen werden, während durch die Auswahl der Tragestruktur den in Maschinenlängsrichtung und in Maschinenquerrichtung auftretenden mechanischen Belastungen Rechnung getragen werden kann.In the band according to the invention, therefore, the support structure is completely foamed into the foam material, that is embedded. This allows easy manufacturability, since the foam material on the one hand and the support structure on the other hand are not to be connected in additional operations with each other. On the other hand, in particular by the selection of the foam material, the requirements arising in interaction with the web material to be produced can be optimally taken into account, while the selection of the carrying structure can take into account the mechanical loads occurring in the machine longitudinal direction and in the cross machine direction.

Das eingesetzte Schaumstoffmaterial ist vorzugsweise offenzellig. Insbesondere kann thermoplastisches Polymermaterial, vorzugsweise Polyurethanmaterial, als Schaumstoffmaterial vorgesehen sein. Das Schaumstoffmaterial kann alternativ oder zusätzlich duroplastisches Polymermaterial, vorzugsweise Melamin-Formaldehyd, umfassen.The foam material used is preferably open-celled. In particular, thermoplastic polymer material, preferably polyurethane material, may be provided as a foam material. The foam material may alternatively or additionally comprise thermosetting polymeric material, preferably melamine-formaldehyde.

Die Tragestruktur kann beispielsweise ausgebildet sein als:

  • Fasermaterial,
  • Gewebe,
  • Gelege oder
  • Kettengewirk.
The support structure may be formed, for example, as:
  • Fiber material,
  • Tissue,
  • Clutch or
  • Warp knit.

Weiter kann zur Anpassung der Oberflächeneigenschaften des erfindungsgemäßen Bandes an die in einem Herstellungsvorgang auftretenden Anforderungen vorgesehen sein, dass das Schaumstoffmaterial an wenigstens einer Seite mit Vlies- oder Filzmaterial verbunden ist.Furthermore, in order to adapt the surface properties of the strip according to the invention to the requirements occurring in a production process, it may be provided that the foam material is connected to nonwoven or felt material on at least one side.

Das Schaumstoffmaterial kann mit der darin eingeschäumten Tragestruktur in einem Filmextrusionsverfahren hergestellt werden.The foam material can be made with the support structure foamed therein in a film extrusion process.

Gemäß einem weiteren Aspekt der Erfindung kann bei einem gattungsgemäß aufgebauten Band vorgesehen sein, dass das Schaumstoffmaterial offenporig ist und auf einer damit verbundenen Tragestruktur aufliegt.According to a further aspect of the invention may be provided in a generic constructed band, that the foam material is open-pored and rests on a support structure connected thereto.

Auch durch das voneinander getrennte Herstellen des Schaumstoffmaterials einerseits und der Tragestruktur andererseits und darauf folgend das Verbinden dieser beiden Lagen wird insbesondere aufgrund des Einsatzes des Schaumstoffmaterials der gesamte Herstellungsvorgang im Vergleich zum Einsatz einer Auflage aus Vliesmaterial vereinfacht.Also due to the separate production of the foam material on the one hand and the support structure on the other hand and then connecting these two layers, the entire manufacturing process is simplified in comparison with the use of a pad of nonwoven material in particular due to the use of the foam material.

Gemäß einem weiteren Aspekt betrifft die vorliegende Erfindung ein Verfahren zur Herstellung eines Bands für eine Maschine zur Herstellung von Bahnmaterial, insbesondere Papier oder Karton, bei welchem Verfahren eine Tragestruktur in einem Extrusionsverfahren mit wenigstens einer Lage aus Schaumstoffmaterial umschäumt wird.According to a further aspect, the present invention relates to a method for producing a belt for a machine for producing sheet material, in particular paper or cardboard, in which method a support structure is foamed in an extrusion process with at least one layer of foam material.

Die vorliegende Erfindung wird nachfolgend mit Bezug auf die beiliegende Fig. 1 erläutert, welche ein erfindungsgemäß aufgebautes Band im Schnitt zeigt.The present invention will be described below with reference to the attached Fig. 1 explains which shows a band constructed according to the invention in section.

Das in der Fig. 1 gezeigte Band 10, das beispielsweise in einer Presssektion einer Maschine zur Herstellung von Papier oder Karton eingesetzt werden kann, umfasst eine Tragestruktur 12. Im dargestellten Beispiel ist diese als Gewebe oder Gelege ausgebildet mit in einer Bandlängsrichtung verlaufenden Längsfäden 14 und in einer Bandquerrichtung verlaufenden Querfäden 16. Dabei können die Bandlängsrichtung der Maschinenrichtung und die Bandquerrichtung der Maschinenquerrichtung entsprechen.That in the Fig. 1 shown band 10, which can be used for example in a press section of a machine for the production of paper or cardboard, comprises a support structure 12. In the example shown, this is designed as a fabric or scrim with in a tape longitudinal direction running longitudinal threads 14 and extending in a transverse direction of the tape transverse threads 16. In this case, the tape longitudinal direction of the machine direction and the tape transverse direction of the machine transverse direction correspond.

Die Tragestruktur 12 wird in einem Filmextrusionsverfahren durch einen Extrusionskopf hindurchgeführt und dabei mit offenzelligem Schaumstoffmaterial 18 umschäumt. Auf diese Art und Weise ist das Schaumstoffmaterial 18 die Tragestruktur vollständig einbettend an dieser vorgesehen und sehr stabil gehalten. Durch diesen Verbund werden insbesondere auch bei Einsatz eines Geleges die einzelnen Gelegefäden stabil bezüglich einander arretiert. Die an dem Schaumstoffmaterial 18 gebildeten Oberflächen können beispielsweise eine Bandmaterialkontaktoberfläche 20 sowie eine Maschinenkontaktoberfläche 22 bilden.The support structure 12 is passed through an extrusion head in a film extrusion process and thereby foamed with open-cell foam material 18. In this way, the foam material 18 is the support structure completely embedding provided on this and kept very stable. As a result of this composite, the individual jelly threads are stably locked relative to one another even when using a jelly. The surfaces formed on the foam material 18 may form, for example, a strip material contact surface 20 and a machine contact surface 22.

Das Schaumstoffmaterial 18 kann beispielsweise thermoplastisches Polymermaterial, wie z. B. Polyurethanmaterial, umfassen und weist aufgrund seiner offenzelligen Struktur eine hervorragende Wasser abführende Eigenschaft auf. Durch die Einstellung der Größe der im Schaumstoffmaterial 18 vorhandenen Zellen, der Auswahl des Schaumstoffmaterials an sich und dessen Dimensionierung wird es möglich, den im Bereich einer Presssektion auftretenden Anforderungen hinsichtlich der Entfeuchtungseigenschaften, hinsichtlich der Abrasionseigenschaften bzw. auch den druckelastischen Eigenschaften optimiert Rechnung zu tragen. Die mechanische Stabilität in Längs- und Querrichtung wird durch die Tragestruktur 12 gewährleistet. Diese kann, wie bereits erwähnt, beispielsweise als Gelege ausgebildet sein. Selbstverständlich können auch anders strukturierte Tragestrukturen, beispielsweise ein Gewebe, ein Filz- oder Vliesmaterial oder ein netzartiges Material zum Einsatz kommen. Auch ist der Einsatz von Fasermaterial, also ein mehr oder weniger lose verteiltes, langfaseriges Material als Tragestruktur möglich, wobei die einzelnen Fasern dann primär durch das diese umgebende Schaumstoffmaterial 18 zu einem Verbund zusammengehalten werden, der in Längsrichtung und auch in Querrichtung die auftretenden Kräfte aufnehmen kann.The foam material 18 may, for example, thermoplastic polymer material, such as. As polyurethane material, and has due to its open-cell structure on an excellent water laxative property. By adjusting the size of the cells present in the foam material 18, the selection of the foam material per se and its dimensions, it becomes possible to optimally take into account the requirements in the area of a press section with regard to the dehumidifying properties, with regard to the abrasion properties and also the pressure-elastic properties. The mechanical stability in the longitudinal and transverse directions is ensured by the support structure 12. This can, as already mentioned, for example, be designed as a clutch. Of course, differently structured support structures, such as a fabric, a felt or nonwoven material or a net-like material can be used. The use of fiber material, so a more or less loosely distributed, long-fiber material as a support structure is possible, the individual fibers are then primarily held together by the surrounding foam material 18 into a composite, in the longitudinal direction and also in the transverse direction, the forces occurring can record.

Es ist weiterhin möglich, an einer oder an beiden Seiten bezüglich der Tragestruktur 12 mehrere Lagen von Schaumstoffmaterial vorzusehen, wobei sich diese Lagen hinsichtlich ihrer strukturellen bzw. materiellen Eigenschaften unterscheiden können. Weiterhin ist es alternativ oder zusätzlich möglich, an zumindest einer Seite eine Lage von Vlies- oder Filzmaterial vorzusehen, um beispielsweise durch Vernadeln mit der darunter liegenden Schaumstoffmateriallage zu verbinden. Auch dadurch kann eine Anpassung der Eigenschaften eines derartigen Bandes 10 an die in einer Papiermaschine auftretenden Anforderungen erfolgen.It is also possible to provide on one or both sides with respect to the support structure 12 a plurality of layers of foam material, which layers may differ in their structural or physical properties. Furthermore, it is alternatively or additionally possible to provide a layer of nonwoven or felt material on at least one side in order to connect, for example by needling, to the underlying foam material layer. This also makes it possible to adapt the properties of such a strip 10 to the requirements occurring in a paper machine.

Bei einer alternativen Ausgestaltungsform kann vorgesehen sein, dass das Schaumstoffmaterial 18 die Tragestruktur 12 nicht einbettet, sondern separat hergestellt wird und auf die Tragestruktur 12 aufgelegt und nachfolgend damit verbunden wird, beispielsweise materialschlüssig oder durch Vernadeln oder dgl. Auch dadurch wird aufgrund des Ersatzes von bisher eingesetztem Vliesmaterial oder Filzmaterial durch das Schaumstoffmaterial eine einfachere Herstellbarkeit gewährleistet.In an alternative embodiment, it may be provided that the foam material 18 does not embed the support structure 12, but is manufactured separately and placed on the support structure 12 and subsequently connected thereto, for example, materially or by needling or the like. Also, due to the replacement of previously used nonwoven material or felt material by the foam material ensures easier manufacturability.

Claims (9)

Band für eine Maschine zur Herstellung von Bahnmaterial, insbesondere Papier oder Karton, umfassend eine Tragestruktur (12) und wenigstens eine Lage aus Schaumstoffmaterial (18),
dadurch gekennzeichnet, dass die Tragestruktur (12) in das Schaumstoffmaterial (18) eingeschäumt ist.A belt for a machine for producing web material, in particular paper or cardboard, comprising a support structure (12) and at least one layer of foam material (18),
characterized in that the support structure (12) is foamed into the foam material (18). Band nach Anspruch 1,
dadurch gekennzeichnet, dass das Schaumstoffmaterial (18) offenzellig ist.Tape according to claim 1,
characterized in that the foam material (18) is open-celled. Band nach Anspruch 1 oder 2,
dadurch gekennzeichnet, dass das Schaumstoffmaterial (18) thermoplastisches Polymermaterial, vorzugsweise Polyurethanmaterial, umfasst.A tape according to claim 1 or 2,
characterized in that the foam material (18) comprises thermoplastic polymer material, preferably polyurethane material. Band nach einem der Ansprüche 1 bis 3, dadurch gekennzeichnet, dass das Schaumstoffmaterial (18) duroplastisches Polymermaterial, vorzugsweise Melamin-Formaldehyd, umfasst.Tape according to one of claims 1 to 3, characterized in that the foam material (18) comprises thermosetting polymer material, preferably melamine-formaldehyde. Band nach einem der Ansprüche 1 bis 4, dadurch gekennzeichnet, dass die Tragestruktur (12) ausgebildet ist als: - Fasermaterial, - Gewebe, - Gelege
oder - Kettengewirk. Tape according to one of claims 1 to 4, characterized in that the support structure (12) is formed as: - fiber material, - tissue, - scrim
or - Warp knit. Band nach einem der Ansprüche 1 bis 5,
dadurch gekennzeichnet, dass das Schaumstoffmaterial (18) an wenigstens einer Seite mit Vlies- oder Filzmaterial verbunden ist.Tape according to one of claims 1 to 5,
characterized in that the foam material (18) is connected on at least one side with fleece or felt material. Band nach einem der Ansprüche 1 bis 6,
dadurch gekennzeichnet, dass das Schaumstoffmaterial (18) mit der darin eingeschäumten Tragestruktur (12) durch ein Filmextrusionsverfahren hergestellt ist.A belt according to any one of claims 1 to 6,
characterized in that the foam material (18) with the support structure (12) foamed therein is made by a film extrusion process. Band nach dem Oberbegriff des Anspruchs 1,
dadurch gekennzeichnet, dass das Schaumstoffmaterial (18) offenporig ist und auf einer damit verbundenen Tragestruktur aufliegt.Band according to the preamble of claim 1,
characterized in that the foam material (18) is open-pored and rests on a support structure connected thereto. Verfahren zur Herstellung eines Bands für eine Maschine zur Herstellung von Bahnmaterial, insbesondere Papier oder Karton, bei welchem Verfahren eine Tragestruktur (12) in einem Filmextrusionsverfahren mit wenigstens einer Lage aus Schaumstoffmaterial (18) umschäumt wird.Method for producing a belt for a machine for the production of web material, in particular paper or cardboard, in which process a carrier structure (12) is foamed in a film extrusion process with at least one layer of foam material (18).
EP20090160112 2008-05-19 2009-05-13 Press felt Withdrawn EP2128334A1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE200810001854 DE102008001854A1 (en) 2008-05-19 2008-05-19 Press Felt

Publications (1)

Publication Number Publication Date
EP2128334A1 true EP2128334A1 (en) 2009-12-02

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EP20090160112 Withdrawn EP2128334A1 (en) 2008-05-19 2009-05-13 Press felt

Country Status (3)

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US (1) US7851389B2 (en)
EP (1) EP2128334A1 (en)
DE (1) DE102008001854A1 (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2017178414A1 (en) * 2016-04-15 2017-10-19 Voith Patent Gmbh Method and forming belt for producing a fibre material web
WO2017178405A1 (en) * 2016-04-15 2017-10-19 Voith Patent Gmbh Covering and method for producing a covering

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2015090797A1 (en) 2013-12-20 2015-06-25 Voith Patent Gmbh Fabric and method for producing same
DE102016206385A1 (en) * 2016-04-15 2017-10-19 Voith Patent Gmbh Covering and method for producing a covering

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