EP1711656B1 - Modularly constructed paper machine covering - Google Patents

Modularly constructed paper machine covering Download PDF

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Publication number
EP1711656B1
EP1711656B1 EP04821275A EP04821275A EP1711656B1 EP 1711656 B1 EP1711656 B1 EP 1711656B1 EP 04821275 A EP04821275 A EP 04821275A EP 04821275 A EP04821275 A EP 04821275A EP 1711656 B1 EP1711656 B1 EP 1711656B1
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EP
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Prior art keywords
material layers
web
material layer
fabrics according
fabrics
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Revoked
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EP04821275A
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German (de)
French (fr)
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EP1711656A1 (en
Inventor
Arved H. Westerkamp
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Voith Patent GmbH
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Voith Patent GmbH
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Classifications

    • 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
    • D21F1/0036—Multi-layer screen-cloths
    • 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
    • D21F1/0054—Seams thereof
    • 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
    • D21F1/0063—Perforated sheets
    • 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
    • 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
    • Y10T156/00—Adhesive bonding and miscellaneous chemical manufacture
    • Y10T156/10—Methods of surface bonding and/or assembly therefor

Definitions

  • the invention relates to a fabric for a paper, board or Tissuemaschine.
  • Paper, board or tissue machines have clothing in the forming, pressing and drying sections.
  • clothing manufacturers often custom-fabricate forming fabrics, each with different weave patterns.
  • a fabric for paper machines which is constructed completely or at least substantially of sheet layers laminated to one another on a flat surface, the film layers each assuming specific tasks in the clothing.
  • the invention is based on the consideration of reducing the manufacturing costs of coverings for paper, board or tissue machines by standardizing the manufacturing process for the entire product range of paper machine clothing.
  • the fabric according to the invention for paper, board or tissue machines is composed of a plurality of web-shaped material layers of a prefabricated building block of web-like material layers, wherein the individual web-like material layers are selected depending on the type and conditions of use of the fabric from the kit, and wherein the web-like material layers stacked on each other and at least partially flat and permanently connected to each other, wherein at least two web-shaped material layers are interconnected by a bonding medium and wherein the bonding medium forms a foamed material layer between the interconnected material layers.
  • a covering is proposed in which a kit of prefabricated material layers is provided.
  • a kit of prefabricated material layers for the entire range of paper machine clothing and by selecting prefabricated web-shaped material layers from the kit, depending on the type and conditions of use of the fabric, the number of different material layers such as weave structures is significantly reduced.
  • the web-like material layers are connected to one another by a bonding medium, wherein the bonding medium itself forms a material layer arranged between the interconnected material layers and the bonding medium is a foamed material layer.
  • fabrications for the different types and conditions of use can be produced in each case by combining a plurality of the prefabricated web-shaped material webs.
  • the order of stacking of the selected web-like material layers depends on the type and conditions of use of the clothing.
  • the flexibility in the use of the prefabricated material layers is increased, since in addition depending on the order of stacking of the selected sheet-like material layers different properties of the fabric are achieved.
  • prefabricated web-like material layers are such that they individually or in combination specific functions such as. Damping property, dimensional stability, wear resistance, surface property, liquid receiving volume and the like. Meet.
  • the modular system of prefabricated material layers comprises at least one material layer influencing the surface of a fibrous web and at least one wear-resistant material layer.
  • the material layer influencing the surface of the fibrous web is meant the material layer which closes the fabric in the direction of the fibrous web.
  • the wear-resistant material layer is to be understood as meaning the material layer which closes off the clothing in the direction of the paper machine.
  • the modular system of prefabricated material layers comprises at least one dimensionally stable material layer.
  • the dimensionally stable material layer can be designed both as a material layer separately formed to the two aforementioned material layers, as well as be an integral part of one of the aforementioned material layers.
  • a preferred embodiment of the invention provides that the material layer influencing the surface of the material web is a textile or a non-textile fabric.
  • a further preferred embodiment of the invention also provides that the wear-resistant material layer is a textile or a non-textile fabric.
  • a further preferred embodiment of the invention provides that the modular system of prefabricated material layers comprises at least one material layer influencing the liquid absorption volume.
  • the material layer influencing the liquid absorption volume can be formed both separately from the abovementioned material layers and integrally with one of the abovementioned material layers.
  • the material layer affecting the liquid receiving volume may be formed either as a material layer with a high liquid absorption volume or as a material layer with a low liquid absorption volume.
  • a material layer having a high liquid receiving volume should have a liquid receiving volume which is greater than 50% of the total volume of the material layer, more preferably greater than 70% of the total volume of the material layer, and most preferably greater than 80% of the total volume of the material layer.
  • a material layer with a low liquid receiving volume should have a liquid receiving volume which is less than 50% of the total volume of the material layer, more preferably less than 30% of the total volume of the material layer, and most preferably less than 20% of the total volume of the material layer.
  • the modular system of prefabricated web-like material layers has at least one material layer which prevents re-wetting.
  • the dimensionally stable material layer and / or the material layer influencing the liquid absorption volume and / or the material layer suppressing rewetting are textile or non-textile fabrics.
  • a textile fabric is to be understood as meaning, for example, a woven structure or a nonwoven fabric or a thread scrim or a warp knit fabric.
  • a non-textile fabric should further be understood as meaning, for example, a structured and / or penetrated film or a structured and / or penetrated membrane and / or a foamed layer.
  • the material layer with a high liquid receiving volume is a foamed layer.
  • the material layer with low liquid receiving volume is a foamed layer or a penetrated foil or a membrane.
  • the foamed layer has a defined pore size.
  • a defined pore size can be, for example, the Adjust liquid volume and thus the drainage behavior.
  • the foamed layer has a plurality of defined pore sizes.
  • the foamed layer has a defined pore transverse profile, i. different pore sizes in the transverse profile of the material layer.
  • An above-mentioned film can be produced, for example, by an extrusion method and / or a rolling method.
  • a first material layer of a fabric according to the invention may be mechanically bonded to a second material layer and the second material layer may be chemically bonded to a third material layer.
  • the third material layer may be connected to a fourth material layer of this fabric by a textile connection method, wherein the fourth material layer is mechanically and chemically bonded to a fifth material layer.
  • the chemical compound is realized by a surface-active compound.
  • a surface-active compound in this context means a compound by vulcanization or fusion or welding, for example ultrasonic welding. That is, the boundary surfaces of the two material layers to be joined together are shaped changes / activates that they connect with each other without a connection medium.
  • connection medium may, for example, be an adhesive.
  • the material layers are connected to one another by a textile connection method, it is possible to sew these together or to need to need to be needled together.
  • the fabric forms two shape and functionally complementary end portions which are connected to each other surface, so that the fabric is formed in the form of an endless belt.
  • the flat connection between the two Endabachitesen is particularly stable and durable.
  • the fabric is constructed in the width of a plurality of juxtaposed layers of material, it is also useful if the stacked material layers are at least partially offset from one another transversely to the machine direction, so that above and / or below each other arranged material layers of a particular layer of the fabric each have a layer of material is stacked, which overlaps with two juxtaposed layers of material.
  • FIGS. 1 and 2 show fabrics that are made of a kit of prefabricated web-shaped material layers 41,42 and 61.
  • the FIG. 1 shows in sections a forming fabric 40 according to the invention in cross section, ie transversely to the machine direction.
  • the forming fabric 40 has a paper-side web-shaped material layer 41, through which the surface of the fibrous web formed on the forming fabric is substantially influenced, and a machine-side web-shaped material layer 42, by which the wear behavior of the forming fabric 40 is substantially influenced.
  • the machine-side material layer 42 is thus a wear-resistant material layer 42.
  • the paper-side 41 and machine-side material layer 42 additionally have dimensionally stabilizing properties.
  • the material layers 41 and 42 are formed in the present embodiment as a textile fabric in the form of woven structures 41 and 42.
  • the weave structure 41 is formed by the warp threads 45 and the weft threads 44, each weft thread 44 running alternately under and over a warp thread 45 to form a smooth weave pattern, thereby providing a smooth support surface for the paper fibers.
  • the weave structure 42 is formed by the warp threads 46 and the weft threads 47, wherein each weft thread 47 runs in a repeat unit under two successive warp threads 46 and then over a warp thread 46 to form a particularly wear-resistant weave pattern in which the warp threads 46 subjected to high tensile force 46 are protected by the weft threads 47 from abrasion.
  • the two weave structures 41 and 42 are connected to each other in a planar manner in a chemical manner by a bonding medium at the interfaces 48 and 49.
  • the connecting medium itself forms a foamed material layer 43, which is arranged between the two woven structures 41 and 42 connected to one another.
  • the foamed material layer 43 has pores 50 of a defined size.
  • the foamed material layer 43 accordingly has, in addition to the function of connecting the two weave structures 41 and 42 with each other, to influence the function on the liquid receiving volume.
  • FIG. 2 shows in sections a press felt 60 according to the invention in cross section, ie transversely to the machine direction.
  • the press felt 60 has the from FIG. 1 known machine-side weave structure 42 and a fleece 61 with fibers 62 on.
  • connection medium fulfills the task of connecting the weave structure 42 and the fleece 61 to one another and the task of influencing the liquid absorption volume of the press felt 60.

Abstract

A covering for paper machines, paperboard machines or tissue machines, which is constructed from a construction kit includes a plurality of prefabricated web-shaped material layers. Each web-shaped material layer is configured dependent upon a category and operating conditions of the covering, and the plurality of prefabricated web-shaped material layers are stacked atop one another and are joined to one another at least in sections, two-dimensionally, and in a manner that prevents the plurality of prefabricated web-shaped material layers from being detached. The invention also relates to a method for producing the inventive covering.

Description

Die Erfindung betrifft eine Bespannung für eine Papier-, Karton- oder Tissuemaschine.The invention relates to a fabric for a paper, board or Tissuemaschine.

Papier-, Karton- oder Tissuemaschinen weisen Bespannungen in der Formier-, Pressen- und Trockenpartie auf.Paper, board or tissue machines have clothing in the forming, pressing and drying sections.

An die unterschiedlichen Arten von Bespannungen, nämlich Formiersiebe, Pressfilze und Trockensiebe, werden unterschiedlichste Anforderungen bspw. in Bezug auf das Entwässerungsverhalten, das Feuchtigkeitsaufnahmevolumen und dgl. gestellt.To the different types of clothing, namely forming fabrics, press felts and dryer fabrics, a variety of requirements, for example. With respect to the drainage behavior, the moisture absorption volume and the like. Provided.

Des weiteren werden an Bespannungen der selben Art abhängig von den Einsatzbedingungen unterschiedliche Anforderungen gestellt. So sind bspw. die Anforderungen an die Struktur der der Faserstoffbahn zugewandten Seite eines Formiersiebs beim Herstellungsprozeß von graphischem Papier grundsätzlich unterschiedlich zu denen bei der Herstellung von Tissue.Furthermore, different requirements are placed on fabrics of the same type depending on the conditions of use. For example, the requirements on the structure of the fibrous web-facing side of a forming fabric in the production process of graphic paper are fundamentally different from those in the production of tissue.

Aufgrund der oben beschriebenen unterschiedlichen Arten von Bespannungen, an die jeweils wieder unterschiedlichste Anforderungen gestellt werden hat sich historisch entwickelt, dass Hersteller von Bespannungen nahezu für jede Art und Einsatzbedingung einen Bespannungstyp herstellen,der sich nahezu grundsätzlich von Bespannungstypen anderer Arten und Einsatzbedingungen unterscheidet.Due to the different types of clothing described above, to which a great variety of demands are made, it has developed historically that manufacturers of clothing produce a type of clothing for almost every type and operating condition, which differs almost completely from clothing types of other types and operating conditions.

So fertigen bspw. Bespannungshersteller oftmals kundenspezifisch Formiersiebe mit jeweils unterschiedlichen Webmustern.For example, clothing manufacturers often custom-fabricate forming fabrics, each with different weave patterns.

Aus der US 4,541,895 ist ferner eine Bespannung für Papiermaschinen bekannt, die vollständig oder zumindest im wesentlichen aus flächig aufeinander laminierten Folienlagen aufgebaut ist, wobei die Folienlagen jeweils spezifische Aufgaben in der Bespannung übernehmen.From the US 4,541,895 Furthermore, a fabric for paper machines is known, which is constructed completely or at least substantially of sheet layers laminated to one another on a flat surface, the film layers each assuming specific tasks in the clothing.

Ausgehend von den aus dem Stand der Technik bekannten Bespannungen, ist es die Aufgabe der vorliegenden Erfindung Bespannungen vorzuschlagen, welche einfacher und kostengünstiger als die aus dem Stand der Technik bekannten Bespannungen herzustellen sind.Based on the known from the prior art coverings, it is the object of the present invention to provide coverings, which are easier and less expensive to produce than the known from the prior art coverings.

Die Aufgabe wird erfindungsgemäß durch eine Bespannung für Papier-, Karton- oder Tissuemaschinen mit den Merkmalen des Patentanspruchs 1 gelöst.The object is achieved by a covering for paper, board or tissue machines with the features of claim 1.

Vorteilhafte Ausführungsformen und Weiterbildungen der Erfindung sind in den Unteransprüchen angegeben.Advantageous embodiments and further developments of the invention are specified in the subclaims.

Die Erfindung geht von der Überlegung aus, die Herstellungskosten von Bespannungen für Papier-, Karton- oder Tissuemaschinen zu reduzieren, indem das Herstellungsverfahren für die gesamte Produktpalette an Papiermaschinenbespannungen vereinheitlicht wird.The invention is based on the consideration of reducing the manufacturing costs of coverings for paper, board or tissue machines by standardizing the manufacturing process for the entire product range of paper machine clothing.

Die erfindungsgemäße Bespannung für Papier-, Karton- oder Tissuemaschinen, ist aus mehreren bahnförmigen Materialschichten aus einem vorgefertigten Baukasten von bahnförmigen Materialschichten aufgebaut, wobei die einzelnen bahnförmigen Materialschichten abhängig von der Art und von den Einsatzbedingungen der Bespannung aus dem Baukasten ausgewählt sind, und wobei die bahnförmigen Materialschichten aufeinander gestapelt und zumindest abschnittweise flächig und unlösbar miteinander verbunden sind, wobei zumindest zwei bahnförmige Materialschichten durch ein Verbindungsmedium miteinander verbunden sind und wobei das Verbindungsmedium eine geschäumte Materialschicht zwischen den miteinander verbundenen Materialschichten bildet.The fabric according to the invention for paper, board or tissue machines, is composed of a plurality of web-shaped material layers of a prefabricated building block of web-like material layers, wherein the individual web-like material layers are selected depending on the type and conditions of use of the fabric from the kit, and wherein the web-like material layers stacked on each other and at least partially flat and permanently connected to each other, wherein at least two web-shaped material layers are interconnected by a bonding medium and wherein the bonding medium forms a foamed material layer between the interconnected material layers.

D.h. es wird eine Bespannung vorgeschlagen, bei dem ein Baukasten an vorgefertigten Materialschichten bereitgestellt wird. Durch Festlegen eines Baukastens von vorgefertigten bahnförmigen Materialschichten für die gesamte Produktpalette von Papiermaschinenbespannungen und durch Auswahl von vorgefertigen bahnförmigen Materialschichten aus dem Baukasten, abhängig von der Art und den Einsatzbedingungen der Bespannung, wird die Anzahl an unterschiedlichen Materialschichten wie bspw. Webstrukturen erheblich reduziert.That is, a covering is proposed in which a kit of prefabricated material layers is provided. By defining a kit of prefabricated web-like material layers for the entire range of paper machine clothing and by selecting prefabricated web-shaped material layers from the kit, depending on the type and conditions of use of the fabric, the number of different material layers such as weave structures is significantly reduced.

Ferner sind zumindest zwei der bahnförmigen Materialschichten durch ein Verbindungsmedium miteinander verbunden, wobei das Verbindungsmedium selbst eine zwischen den miteinander verbundenen Materialschichten angeordnete Materialschicht bildet und das Verbindungsmedium eine geschäumte Materialschicht ist.Furthermore, at least two of the web-like material layers are connected to one another by a bonding medium, wherein the bonding medium itself forms a material layer arranged between the interconnected material layers and the bonding medium is a foamed material layer.

Selbstverständlich kann das als separate Materialschicht ausgebildete Verbindungsmedium einzeln oder in Kombination mit einer oder mehreren Materialschichten spezifische Funktionen erfüllen. Somit kann durch die Kombination des Verbindungsmediums mit einer oder mehreren Materialschichten vorteilhaft auf die Eigenschaften der erfindungsgemäßen Bespannung Einfluss genommen werden.Of course, formed as a separate material layer connecting medium individually or in combination with one or more material layers fulfill specific functions. Thus, the combination of the bonding medium with one or more material layers can advantageously influence the properties of the clothing according to the invention.

Wo bspw. in der Vergangenheit für jede Einsatzbedingung eine unterschiedliche Webstruktur erforderlich war, können erfindungsgemäß jeweils durch Kombination mehrerer der vorgefertigten bahnförmigen Materialbahnen Bespannungen für die unterschiedlichen Arten und Einsatzbedingungen hergestellt werden.Where, for example, in the past a different weave structure was required for each use condition, according to the invention, fabrications for the different types and conditions of use can be produced in each case by combining a plurality of the prefabricated web-shaped material webs.

Nach einem bevorzugten Ausführungsbeispiel ist vorgesehen, dass die Reihenfolge der Stapelung der ausgewählten bahnförmigen Materialschichten von der Art und den Einsatzbedingungen der Bespannung abhängig ist. Somit wird die Flexibilität bei der Verwendung der vorgefertigten Materialschichten erhöht, da zusätzlich abhängig von der Reihenfolge der Stapelung der ausgewählten bahnförmigen Materialschichten unterschiedliche Eigenschaften der Bespannung erzielt werden.According to a preferred embodiment, it is provided that the order of stacking of the selected web-like material layers depends on the type and conditions of use of the clothing. Thus, the flexibility in the use of the prefabricated material layers is increased, since in addition depending on the order of stacking of the selected sheet-like material layers different properties of the fabric are achieved.

In diesem Zusammenhang soll darauf verwiesen werden, dass die vorgefertigten bahnförmigen Materialschichten dergestalt sind, dass diese einzeln oder in Kombination spezifische Funktionen wie bspw. Dämpfungseigenschaft, Dimensionsstabilität, Verschleißstabilität, Oberflächeneigenschaft, Flüssigkeitsaufnahmevolumen und dgl. erfüllen.In this context, it should be noted that the prefabricated web-like material layers are such that they individually or in combination specific functions such as. Damping property, dimensional stability, wear resistance, surface property, liquid receiving volume and the like. Meet.

Nach einer besonders bevorzugten Ausführungsform ist vorgesehen, dass der Baukasten von vorgefertigten Materialschichten zumindest eine die Oberfläche einer Faserstoffbahn beeinflussende Materialschicht und zumindest eine verschleißstabile Materialschicht umfasst. Hierbei ist unter der die Oberfläche der Faserstoffbahn beeinflussenden Materialschicht die Materialschicht gemeint, welche die Bespannung in Richtung der Faserstoffbahn abschließt. Des weiteren ist unter der verschleißstabilen Materialschicht die Materialschicht zu verstehen, welche die Bespannung in Richtung der Papiermaschine abschließt.According to a particularly preferred embodiment, it is provided that the modular system of prefabricated material layers comprises at least one material layer influencing the surface of a fibrous web and at least one wear-resistant material layer. Here, by the material layer influencing the surface of the fibrous web is meant the material layer which closes the fabric in the direction of the fibrous web. Furthermore, the wear-resistant material layer is to be understood as meaning the material layer which closes off the clothing in the direction of the paper machine.

Nach einem weiteren bevorzugten Ausführungsbeispiel ist vorgesehen, dass der Baukasten von vorgefertigten Materialschichten zumindest eine dimensionsstabile Materialschicht umfasst. Die dimensionsstabile Materialschicht kann sowohl als zu den beiden vorgenannten Materialschichten separat ausgebildete Materialschicht ausgeführt, wie auch integraler Bestandteil einer der vorgenannten Materialschichten sein.According to a further preferred embodiment, it is provided that the modular system of prefabricated material layers comprises at least one dimensionally stable material layer. The dimensionally stable material layer can be designed both as a material layer separately formed to the two aforementioned material layers, as well as be an integral part of one of the aforementioned material layers.

Es sind unterschiedliche Möglichkeiten denkbar, wie die oben genannten Materialschichten ausgebildet sein können.There are different possibilities conceivable how the above-mentioned material layers can be formed.

Eine bevorzugte Ausführungsform der Erfindung sieht vor, dass die die Oberfläche der Materialbahn beeinflussende Materialschicht ein textiles oder ein nicht textiles Flächengebilde ist.A preferred embodiment of the invention provides that the material layer influencing the surface of the material web is a textile or a non-textile fabric.

Eine weitere bevorzugte Ausführungsform der Erfindung sieht darüber hinaus vor, dass die verschleißstabile Materialschicht ein textiles oder ein nicht textiles Flächengebilde ist.A further preferred embodiment of the invention also provides that the wear-resistant material layer is a textile or a non-textile fabric.

Eine weitere bevorzugte Ausführungsform der Erfindung sieht vor, dass der Baukasten von vorgefertigten Materialschichten zumindest eine das Flüssigkeitsaufnahmevolumen beeinflussende Materialschicht umfasst. Die das Flüssigkeitsaufnahmevolumen beeinflussende Materialschicht kann sowohl separat zu den vorgenannten Materialschichten wie auch integral zu einer der vorgenannten Materialschichten ausgebildet sein.A further preferred embodiment of the invention provides that the modular system of prefabricated material layers comprises at least one material layer influencing the liquid absorption volume. The material layer influencing the liquid absorption volume can be formed both separately from the abovementioned material layers and integrally with one of the abovementioned material layers.

Die das Flüssigkeitsaufnahmevolumen beeinflussende Materialschicht entweder als Materialschicht mit hohem Flüssigkeitsaufnahmevolumen oder als Materialschicht mit niederem Flüssigkeitsaufnahmevolumen ausgebildet sein.The material layer affecting the liquid receiving volume may be formed either as a material layer with a high liquid absorption volume or as a material layer with a low liquid absorption volume.

Eine Materialschicht mit hohem Flüssigkeitsaufnahmevolumen soll ein Flüssigkeitsaufnahmevolumen aufweisen, welches größer als 50% des Gesamtvolumens der Materialschicht, besonders bevorzugt größer als 70% des Gesamtvolumens der Materialschicht und ganz besonders bevorzugt größer als 80% des Gesamtvolumens der Materialschicht ist.A material layer having a high liquid receiving volume should have a liquid receiving volume which is greater than 50% of the total volume of the material layer, more preferably greater than 70% of the total volume of the material layer, and most preferably greater than 80% of the total volume of the material layer.

Eine Materialschicht mit niederem Flüssigkeitsaufnahmevolumen soll ein Flüssigkeitsaufnahmevolumen aufweisen, welches kleiner als 50% des Gesamtvolumens der Materialschicht, besonders bevorzugt kleiner als 30% des Gesamtvolumens der Materialschicht und ganz besonders bevorzugt kleiner als 20% des Gesamtvolumens der Materialschicht ist.A material layer with a low liquid receiving volume should have a liquid receiving volume which is less than 50% of the total volume of the material layer, more preferably less than 30% of the total volume of the material layer, and most preferably less than 20% of the total volume of the material layer.

Nach einer weiteren bevorzugten Ausführungsform der Erfindung ist vorgesehen, dass der Baukasten von vorgefertigten bahnförmigen Materialschichten zumindest eine die Rückbefeuchtung unterbindende Materialschicht aufweist.In accordance with a further preferred embodiment of the invention, it is provided that the modular system of prefabricated web-like material layers has at least one material layer which prevents re-wetting.

Des weiteren sehen bevorzugte Ausführungsformen vor, dass die dimensionsstabile Materialschicht und / oder die das Flüssigkeitsaufnahmevolumen beeinflussende Materialschicht und / oder die die Rückbefeuchtung unterbindende Materialschicht textile oder nicht textile Flächengebilde sind.Furthermore, preferred embodiments provide that the dimensionally stable material layer and / or the material layer influencing the liquid absorption volume and / or the material layer suppressing rewetting are textile or non-textile fabrics.

Unter einem textilen Flächengebilde soll bspw. eine Webstruktur oder ein Vlies oder ein Fadengelege oder ein Kettengewirk verstanden werden.A textile fabric is to be understood as meaning, for example, a woven structure or a nonwoven fabric or a thread scrim or a warp knit fabric.

Unter einem nichttextilen Flächengebilden soll des weiteren bspw. eine strukturierte und / oder penetrierte Folie oder eine strukturierte und / oder penetrierte Membran und / oder eine geschäumte Schicht verstanden werden.A non-textile fabric should further be understood as meaning, for example, a structured and / or penetrated film or a structured and / or penetrated membrane and / or a foamed layer.

So ist es bspw. vorteilhaft, wenn die Materialschicht mit hohem Flüssigkeitsaufnahmevolumen eine geschäumte Schicht ist.Thus, for example, it is advantageous if the material layer with a high liquid receiving volume is a foamed layer.

Des weiteren ist es vorteilhaft, wenn die Materialschicht mit niederem Flüssigkeitsaufnahmevolumen eine geschäumte Schicht oder eine penetrierte Folie oder eine Membran ist.Furthermore, it is advantageous if the material layer with low liquid receiving volume is a foamed layer or a penetrated foil or a membrane.

Des weiteren ist es vorteilhaft, wenn die geschäumte Schicht eine definierte Porengröße aufweist. Durch die Bereitstellung einer definierten Porengröße läßt sich bspw. das Flüssigkeitsaufnahmevolumen und somit das Entwässerungsverhalten einstellen. Darüber hinaus ist es auch denkbar, dass die geschäumte Schicht mehrere definierte Porengrößen aufweist.Furthermore, it is advantageous if the foamed layer has a defined pore size. By providing a defined pore size can be, for example, the Adjust liquid volume and thus the drainage behavior. Moreover, it is also conceivable that the foamed layer has a plurality of defined pore sizes.

Nach einer bevorzugten Ausführungsform der Erfindung weist die geschäumte Schicht ein definiertes Porenquerprofil, d.h. unterschiedliche Porengrößen im Querprofil der Materialschicht auf. Dadurch ist es möglich das Entwässenugsverhalten und das Pressverhalten über die Bahnbereite der Papiermaschinenbespannung gezielt einzustellen und somit im Resultat zu erreichen, dass das Bahnquerprofil der Faserstoffbahn gezielt einstellbar ist.According to a preferred embodiment of the invention, the foamed layer has a defined pore transverse profile, i. different pore sizes in the transverse profile of the material layer. This makes it possible to selectively adjust the Entwässsenugsverhalten and the pressing behavior on the Bahnbereite the paper machine clothing and thus to achieve the result that the web cross profile of the fibrous web is specifically adjustable.

Eine oben genannte Folie kann bspw. durch ein Extrudierverfahren und / oder Walzverfahren hergestellt werden.An above-mentioned film can be produced, for example, by an extrusion method and / or a rolling method.

Es sind unterschiedliche Möglichkeiten denkbar, die mehreren aus dem Baukasten ausgewählten Materialschichten unlösbar miteinander zu verbinden.There are various possibilities conceivable, the multiple material layers selected from the kit inextricably linked together.

So ist es bspw. möglich zumindest zwei der Materialschichten miteinander chemisch zu verbinden. Des weiteren ist es möglich zumindest zwei der Materialschichten mechanisch und / oder durch ein textiles Verbindungsverfahren miteinander zu verbinden. Die unterschiedlichen Materialschichten einer erfindungsgemäßen Bespannungen können sowohl nur auf die eine oder andere Art und Weise miteinander verbunden sein. Des weiteren ist es auch möglich, die Materialschichten sowohl mechanisch, textil als auch chemisch miteinander zu verbinden.For example, it is possible to chemically bond at least two of the material layers to one another. Furthermore, it is possible to join together at least two of the material layers mechanically and / or by a textile connection method. The different layers of material of a clothing according to the invention can be connected to one another only in one way or another. Furthermore, it is also possible to connect the material layers both mechanically, textile and chemically with each other.

Bspw. kann eine erste Materialschicht einer erfindungsgemäßen Bespannung mit einer zweiten Materialschicht mechanisch verbunden sein und die zweite Materialschicht mit einer dritten Materialschicht chemisch verbunden sein. Des weiteren kann die dritte Materialschicht mit einer vierten Materialschicht dieser Bespannung durch ein textiles Verbindungsverfahren verbunden sein, wobei die vierte Materialschicht mit einer fünften Materialschicht mechanisch und chemisch verbunden ist.For example. For example, a first material layer of a fabric according to the invention may be mechanically bonded to a second material layer and the second material layer may be chemically bonded to a third material layer. Furthermore, the third material layer may be connected to a fourth material layer of this fabric by a textile connection method, wherein the fourth material layer is mechanically and chemically bonded to a fifth material layer.

Nach einer weiteren bevorzugten Ausführungsform wird die chemische Verbindung durch eine grenzflächenaktive Verbindung realisiert. Unter einer grenzflächenaktiven Verbindung ist in diesem Zusammenhang eine Verbindung durch Vulkanisieren oder Verschmelzen oder Verschweißen bspw. Ultraschallschweißen zu verstehen. D.h. es werden die Grenzflächen der beiden miteinander zu verbindenden Materialschichten dergestalt verändert / aktiviert, dass diese sich miteinander ohne ein Verbindungsmedium verbinden.According to another preferred embodiment, the chemical compound is realized by a surface-active compound. A surface-active compound in this context means a compound by vulcanization or fusion or welding, for example ultrasonic welding. That is, the boundary surfaces of the two material layers to be joined together are shaped changes / activates that they connect with each other without a connection medium.

Eine weitere Ausführungsform der Erfindung sieht vor, die chemische Verbindung durch Einbringen eines Verbindungsmediums realisiert wird. Hierbei kann das Verbindungsmedium bspw. ein Klebstoff sein.A further embodiment of the invention provides that the chemical compound is realized by introducing a connecting medium. In this case, the connection medium may, for example, be an adhesive.

Sind die Materialschichten miteinander mechanisch verbunden, ist denkbar diese miteinander zu verpressen.If the material layers are mechanically connected to one another, it is conceivable to press them together.

Sind die Materialschichten durch ein textiles Verbindungsverfahren miteinander verbunden, ist es möglich diese miteinander zu vernähen oder miteinander zu vernadeln.If the material layers are connected to one another by a textile connection method, it is possible to sew these together or to need to need to be needled together.

Handelt es sich um eine Bespannung, die nicht aus Materialbahnen in Form von Endlosbänder aufgebaut ist, ist es sinnvoll, wenn die verschiedenen aufeinandergestapelten bahnförmigen Materialschichten in Maschinenrichtung zueinander abschnittweise versetzt miteinander flächig verbunden sind, sodass die Bespannung zwei zueinander form- und funktionskomplementäre Endabschnitte bildet, die miteinander verbindbar sind. Durch die in Maschinenrichtung zueinander abschnittweise versetzt angeordneten und flächig miteinander verbundenen Materialschichten bildet die Bespannung zwei form- und funktionskomplementäre Endabschnitte, die flächig miteinander verbindbar sind, sodass die Bespannung in der Form eines Endlosbandes ausgebildet wird. Die flächige Verbindung zwischen den beiden Endabachnitten ist besonders stabil und haltbar.If it is a covering which is not constructed of material webs in the form of endless belts, it makes sense if the different stacked web-like material layers are mutually offset in sections in the machine direction so that the clothing forms two end sections which are complementary in terms of shape and function, which are connectable with each other. By arranged in the machine direction to each other in sections and spatially interconnected layers of material, the fabric forms two shape and functionally complementary end portions which are connected to each other surface, so that the fabric is formed in the form of an endless belt. The flat connection between the two Endabachschnitten is particularly stable and durable.

Ist die Bespannung in deren Breite aus mehreren nebeneinander angeordneten Materialschichten aufgebaut, ist es des weiteren sinnvoll, wenn die aufeinander gestapelten Materialschichten zumindest abschnittweise quer zur Maschinenrichtung zueinander versetzt sind, sodass über und / oder unter nebeneinander angeordneten Materialschichten einer bestimmten Lage der Bespannung jeweils eine Materialschicht gestapelt ist, welche mit beiden nebeneinander angeordneten Materialschichten überlappt.If the fabric is constructed in the width of a plurality of juxtaposed layers of material, it is also useful if the stacked material layers are at least partially offset from one another transversely to the machine direction, so that above and / or below each other arranged material layers of a particular layer of the fabric each have a layer of material is stacked, which overlaps with two juxtaposed layers of material.

Nachfolgend wird die Erfindung anhand der folgenden schematischen nicht maßstäblichen Zeichnungen weiter erläutert werden. Es zeigen:

Figur 1
einen Ausschnitt eines erfindungsgemäßen Formiersiebs im Quersschitt,
Figur 2
einen Ausschnitt eines erfindungsgemäßen Pressfilzes im Querschitt,
The invention will be explained in more detail below with reference to the following diagrammatic drawings, which are not to scale. Show it:
FIG. 1
a section of a forming fabric according to the invention in the transverse section,
FIG. 2
a section of a press felt according to the invention in Querschitt,

Die Figuren 1 und 2 zeigen Bespannungen, die aus einem Baukasten von vorgefertigten bahnförmigen Materialschichten 41,42 und 61 hergestellt sind.The FIGS. 1 and 2 show fabrics that are made of a kit of prefabricated web-shaped material layers 41,42 and 61.

Die Figur 1 zeigt abschnittweise ein erfindungsgemäßes Formiersieb 40 im Querschnitt, d.h. quer zur Maschinenrichtung. Das Formiersieb 40 weist eine papierseitige bahnförmige Materialschicht 41, durch welche die Oberfläche der auf dem Formiersieb gebildeten Faserstoffbahn wesentlich beeinflusst wird, und eine maschinenseitige bahnförmige Materialschicht 42 auf, durch welche das Verschleißverhalten des Formiersiebs 40 im wesentlichen beeinflusst wird. Die maschinenseitige Materialschicht 42 ist somit eine verschleißstabile Materialschicht 42. Im vorliegenden Ausführungsbeispiel weisen die papierseitige 41 und maschinenseitige Materialschicht 42 zusätzlich dimensions-stabilisierende Eigenschaften auf.The FIG. 1 shows in sections a forming fabric 40 according to the invention in cross section, ie transversely to the machine direction. The forming fabric 40 has a paper-side web-shaped material layer 41, through which the surface of the fibrous web formed on the forming fabric is substantially influenced, and a machine-side web-shaped material layer 42, by which the wear behavior of the forming fabric 40 is substantially influenced. The machine-side material layer 42 is thus a wear-resistant material layer 42. In the present exemplary embodiment, the paper-side 41 and machine-side material layer 42 additionally have dimensionally stabilizing properties.

Die Materialschichten 41 und 42 sind in der vorliegenden Ausführungsform als textile Flächengebilde in Form von Webstrukturen 41 und 42 ausgebildet.The material layers 41 and 42 are formed in the present embodiment as a textile fabric in the form of woven structures 41 and 42.

Die Webstruktur 41 wird durch die Kettfäden 45 und die Schußfäden 44 gebildet, wobei jeder Schußfaden 44 abwechselnd unter und über einen Kettfaden 45 verläuft um ein glattes Webmuster zu bilden, wodurch eine glatte Auflagefläche für die Papierfasern geschaffen wird.The weave structure 41 is formed by the warp threads 45 and the weft threads 44, each weft thread 44 running alternately under and over a warp thread 45 to form a smooth weave pattern, thereby providing a smooth support surface for the paper fibers.

Die Webstruktur 42 wird durch die Kettfäden 46 und die Schußfäden 47 gebildet, wobei jeder Schußfaden 47 in einer Wiederholeinheit unter zwei aufeinanderfolgenden Kettfäden 46 und anschließend über einen Kettfaden 46 verläuft um ein besonders verschleißstabiles Webmuster zu bilden, bei dem die mit hoher Zugkraft beaufschlagten Kettäden 46 durch die Schußfäden 47 vor Abrieb geschützt sind.The weave structure 42 is formed by the warp threads 46 and the weft threads 47, wherein each weft thread 47 runs in a repeat unit under two successive warp threads 46 and then over a warp thread 46 to form a particularly wear-resistant weave pattern in which the warp threads 46 subjected to high tensile force 46 are protected by the weft threads 47 from abrasion.

Die beiden Webstrukturen 41 und 42 sind im vorliegenden Ausführungsbeispiel flächig auf chemische Art und Weise durch ein Verbindungsmedium an den Grenzflächen 48 und 49 miteinander verbunden. Hierbei bildet das Verbindungsmedium selbst eine geschäumte Materialschicht 43, die zwischen den beiden miteinander verbundenen Webstrukturen 41 und 42 angeordnet ist. Die geschäumte Materialschicht 43 weist Poren 50 mit definierter Größe auf. Die geschäumte Materialschicht 43 weist demzufolge zusätzlich zur Funktion, die beiden Webstrukturen 41 und 42 miteinander zu verbinden, die Funktion auf das Flüssigkeitsaufnahmevolumen zu beeinflussen.In the present exemplary embodiment, the two weave structures 41 and 42 are connected to each other in a planar manner in a chemical manner by a bonding medium at the interfaces 48 and 49. In this case, the connecting medium itself forms a foamed material layer 43, which is arranged between the two woven structures 41 and 42 connected to one another. The foamed material layer 43 has pores 50 of a defined size. The foamed material layer 43 accordingly has, in addition to the function of connecting the two weave structures 41 and 42 with each other, to influence the function on the liquid receiving volume.

Die Figur 2 zeigt abschnittweise ein erfindungsgemäßes Pressfilz 60 im Querschnitt, d.h. quer zur Maschinenrichtung. Das Pressfilz 60 weist die aus der Figur 1 bekannte maschinenseitige Webstruktur 42 und ein Vlies 61 mit Fasern 62 auf.The FIG. 2 shows in sections a press felt 60 according to the invention in cross section, ie transversely to the machine direction. The press felt 60 has the from FIG. 1 known machine-side weave structure 42 and a fleece 61 with fibers 62 on.

Das Vlies 61 und die Webstruktur 42 sind durch das eine geschäumte Materialschicht 43 bildende Verbindungsmedium an den beiden Grenzflächen 63 und 49 miteinander verbunden. Auch bei dem Pressfilz 60 erfüllt das Verbindungsmedium die Aufgabe die Webstruktur 42 und das Vlies 61 miteinander zu verbinden und die Aufgabe das Flüssigkeitsaufnahmevolumen des Pressfilzes 60 zu beeinflussen.The nonwoven 61 and the woven structure 42 are connected to each other at the two interfaces 63 and 49 by the bonding medium forming a foamed material layer 43. In the case of the press felt 60, too, the connection medium fulfills the task of connecting the weave structure 42 and the fleece 61 to one another and the task of influencing the liquid absorption volume of the press felt 60.

Bezugszeichenliste:LIST OF REFERENCE NUMBERS

4040
Formiersiebforming fabric
4141
Webstruktur (papierseitige Materialschicht)Web structure (paper-side material layer)
4242
Webstruktur (maschinenseitige Materialschicht)Web structure (machine-side material layer)
4343
geschäumte Materialschichtfoamed material layer
4444
Schußfaden (Webstruktur)Weft (web structure)
4545
Kettfaden (Webstruktur)Warp thread (weave structure)
4646
Kettfaden (Webstruktur)Warp thread (weave structure)
4747
Schußfaden (Webstruktur)Weft (web structure)
4848
Grenzflächeinterface
4949
Grenzflächeinterface
5050
Poren (Verbindungsmedium)Pores (connecting medium)
6060
Pressfilzpress felt
6161
Vliesfleece
6262
Fasern (Vlies)Fibers (fleece)
6363
Grenzflächeinterface

Claims (13)

  1. Fabrics (40, 60) for machines for making paper, paperboard or tissue, which fabrics are constructed from a plurality of web-shaped material layers (41, 42, 61) from a prefabricated kit of web-shaped material layers (41, 42, 61), the individual web-shaped material layers (41, 42, 61) being selected from the kit as a function of the type and the use conditions of the fabrics (40, 60), and the web-shaped material layers (41, 42, 61) being stacked on one another and joined non-releasably and flatly at least in regions to one another, at least two web-shaped material layers (41, 42, 61) being joined to one another by a joining medium, characterized in that the joining medium forms a foamed material layer (43) between the material layers (41, 42, 61) which are joined to one another.
  2. Fabrics according to Claim 1, characterized in that the sequence of the stacking of the web-shaped material layers (41, 42, 61) is a function of the type and the use conditions of the fabrics (40, 60).
  3. Fabrics according to Claim 1 or 2, characterized in that the kit of prefabricated material layers (41, 42, 61) comprises at least one material layer (41, 61) which influences the surface of a fibrous web and at least one wear-resistant material layer (42).
  4. Fabrics according to one of Claims 1 to 3, characterized in that the kit of prefabricated material layers (41, 42, 61) comprises at least one dimensionally stable material layer (41, 42).
  5. Fabrics according to either of Claims 3 and 4, characterized in that the material layer (41, 61) which influences the surface of the material web is a textile (41, 61) or a non-textile flat structure.
  6. Fabrics according to one of Claims 3 to 5, characterized in that the wear-resistant material layer (42) is a textile (42) or a non-textile flat structure.
  7. Fabrics according to one of Claims 4 to 6, characterized in that the dimensionally stable material layer (41, 42) is a textile (41, 42) or a non-textile flat structure.
  8. Fabrics according to one of Claims 1 to 7, characterized in that the kit of prefabricated web-shaped material layers (41, 42, 61) has at least one material layer which suppresses the rewetting.
  9. Fabrics according to one of Claims 1 to 8, characterized in that the foamed layer (43) has one defined pore size.
  10. Fabrics according to one of Claims 1 to 8, characterized in that the foamed layer (43) has a plurality of defined pore sizes.
  11. Fabrics according to Claim 10, characterized in that the foamed layer (43) has a defined pore-size transverse profile.
  12. Fabrics according to one of Claims 1 to 11, characterized in that the non-releasable joining between the material layers is produced by a chemical and/or mechanical join.
  13. Fabrics according to one of Claims 1 to 12, characterized in that different joining methods are selected as a function of the type, the use conditions and the material layers (41, 42, 61) which are to be joined non-releasably to one another.
EP04821275A 2004-02-06 2004-12-09 Modularly constructed paper machine covering Revoked EP1711656B1 (en)

Applications Claiming Priority (2)

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DE102004006103A DE102004006103A1 (en) 2004-02-06 2004-02-06 Modular paper machine clothing
PCT/EP2004/053360 WO2005075733A1 (en) 2004-02-06 2004-12-09 Modularly constructed paper machine covering

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EP1711656A1 EP1711656A1 (en) 2006-10-18
EP1711656B1 true EP1711656B1 (en) 2008-03-12

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US (1) US20070277951A1 (en)
EP (1) EP1711656B1 (en)
AT (1) ATE389057T1 (en)
DE (2) DE102004006103A1 (en)
WO (1) WO2005075733A1 (en)

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ATE389057T1 (en) 2008-03-15
WO2005075733A1 (en) 2005-08-18
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DE502004006534D1 (en) 2008-04-24
DE102004006103A1 (en) 2005-10-20

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