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EP1026313A2 - Band for making a web material - Google Patents

Band for making a web material Download PDF

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Publication number
EP1026313A2
EP1026313A2 EP99123453A EP99123453A EP1026313A2 EP 1026313 A2 EP1026313 A2 EP 1026313A2 EP 99123453 A EP99123453 A EP 99123453A EP 99123453 A EP99123453 A EP 99123453A EP 1026313 A2 EP1026313 A2 EP 1026313A2
Authority
EP
European Patent Office
Prior art keywords
strength members
fabric
band according
fourdrinier
filling material
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.)
Granted
Application number
EP99123453A
Other languages
German (de)
French (fr)
Other versions
EP1026313B1 (en
EP1026313A3 (en
Inventor
Günter Dr. Halmschlager
Walter Dr. Holzer
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 Paper Patent GmbH
Voith Sulzer Papiertechnik 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 Paper Patent GmbH, Voith Sulzer Papiertechnik Patent GmbH filed Critical Voith Paper Patent GmbH
Publication of EP1026313A2 publication Critical patent/EP1026313A2/en
Publication of EP1026313A3 publication Critical patent/EP1026313A3/en
Application granted granted Critical
Publication of EP1026313B1 publication Critical patent/EP1026313B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • DTEXTILES; PAPER
    • D21PAPER-MAKING; PRODUCTION OF CELLULOSE
    • D21FPAPER-MAKING MACHINES; METHODS OF PRODUCING PAPER THEREON
    • D21F1/00Wet end of machines for making continuous webs of paper
    • D21F1/0027Screen-cloths
    • DTEXTILES; PAPER
    • D03WEAVING
    • D03DWOVEN FABRICS; METHODS OF WEAVING; LOOMS
    • D03D15/00Woven fabrics characterised by the material, structure or properties of the fibres, filaments, yarns, threads or other warp or weft elements used
    • D03D15/60Woven fabrics characterised by the material, structure or properties of the fibres, filaments, yarns, threads or other warp or weft elements used characterised by the warp or weft elements other than yarns or threads
    • D03D15/67Metal wires
    • DTEXTILES; PAPER
    • D21PAPER-MAKING; PRODUCTION OF CELLULOSE
    • D21FPAPER-MAKING MACHINES; METHODS OF PRODUCING PAPER THEREON
    • D21F1/00Wet end of machines for making continuous webs of paper
    • D21F1/10Wire-cloths
    • YGENERAL 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
    • Y10TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10STECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S162/00Paper making and fiber liberation
    • Y10S162/901Impermeable belts for extended nip press
    • YGENERAL 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
    • Y10TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10STECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S162/00Paper making and fiber liberation
    • Y10S162/902Woven fabric for papermaking drier section
    • YGENERAL 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
    • Y10TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10TTECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T428/00Stock material or miscellaneous articles
    • Y10T428/24Structurally defined web or sheet [e.g., overall dimension, etc.]
    • Y10T428/24777Edge feature

Definitions

  • the invention relates to a belt for machines for the production of material webs, especially paper webs.
  • the tape is made of a composite material is produced, which is a preferably elongated strength members manufactured fabric includes, in which spaces between the reinforcements at least partially with a filler are filled.
  • the tape Due to the connection of strength members and filler material can - compared to full metal strips - the weight of the invention Band can be reduced without losing stability and firmness of the tape. Furthermore, the tape is due to the invention Composite material much more flexible.
  • the invention In principle, tape can be made in any width, which can also be more than 2 m. Another advantage is that the Manufacturing costs are lower than for strips made of full metal.
  • the invention also makes it possible to change the proportion of the reinforcement the surface quality of the total surface and in particular the thermal conductivity of the tape and thus its Adjust heat transfer behavior in a targeted manner. Overall, the Invention thus an easy to use, inexpensive and versatile usable tape created.
  • the composite material is at least essentially fluid impermeable.
  • the tape according to the invention can be used as a sealing tape in dry areas e.g. used by paper machines. That the gaps Filling material in the fabric prevents moisture from the material or paper web to be dried, which is replaced by a Drying room, e.g. from the heated area a drying cylinder and the band according to the invention is limited, is passed through, can escape into the environment in an uncontrolled manner.
  • bead-like thickenings are provided in the edge regions, which are preferred are formed by the reinforcement of the fabric.
  • the band according to the invention is provided with integrated sealing beads, which are also formed in the manufacture of the fabric can.
  • the sealing beads which can be made of metal or plastic, seal together with the heated surface and that between the sealing beads lying area of the belt the above-mentioned drying area for the material web to be dried compared to the environment from. Separate seals are therefore not necessary according to the invention.
  • the reinforcements are interwoven.
  • the fabric formed here can be comparatively simply manufactured and targeted and reproducible with each desired properties.
  • the object on which the invention is based is also achieved by the features of the independent process claim and in particular by the fact that from preferably elongated strength members, in particular metal threads, a fabric is made and Gaps between the strength members at least partially a filling material, especially with plastic.
  • the fabric is immersed in liquid filling material.
  • the fabric is soaked with the filling material, so to speak which makes the gaps particularly easy and fast Way to be filled and the fluid tightness of the strength members and the filling material hardened in the final state Composite material can be produced.
  • the fabric After immersing in the filling material, excess material, that covers the surfaces of the fabric, is smeared, to expose the reinforcement that forms the respective surface.
  • the fabric can be treated in such a way that the reinforcement and the filling material located between the reinforcements form at least approximately smooth surfaces.
  • the band 10 according to the invention shown in the figure comprises a flat Metal mesh made of interwoven metal threads 12, 14, 16 as reinforcement, which is preferably made of stainless steel or bronze are. Basically, according to the invention can also be made from different Metals existing threads are processed into a tape.
  • the cross-sectional shape of the strength members can in principle be arbitrary be chosen, the cross section over the length of the reinforcement can be both constant and vary.
  • the strength members indicate e.g. an approximately circular cross-section, but can also for example, be strip or ribbon-shaped and e.g. one Cross section in the form of a flat rectangle with rounded corners exhibit.
  • Mixed cross-sectional shapes of the reinforcement within a band 10 are possible according to the invention.
  • threads 16 each run in pairs by compartments formed by threads 12, 14 running perpendicular thereto.
  • any weaving method can be used according to the invention be made from the metal threads or narrow strips or strips 12, 14, 16 to produce a sheet-like fabric with the desired width.
  • the threads 12, 14, 16 serve as a carrier for the plastic 18.
  • the surfaces of the belt 10 are horizontal from those in the figure extending threads 12, 14 formed.
  • the threads 16 running in pairs can be arranged in this way the plastic 18 be embedded that an intimate connection between the threads 16 and the plastic material 18, which is the fluid impermeability of the band 10 ensures.
  • the invention can Volume 10 can also be made such that even without a intimate connection between reinforcements and plastic material the fluid tightness is guaranteed, namely by a flat Tapes due to self-sealing effect.
  • an interstice Fabric is made arbitrarily and especially depending selectable from the desired properties of the fabric. Prefers however, becomes flat by a weaving process from metal threads Made of metal mesh, its weave according to the respective requirements is chosen.
  • the metal threads can be processed in this way or woven together be that the fabric is essentially closed metallic Has surfaces between which the filling material, in particular Plastic, is arranged.
  • the proportion of the filling material or So plastic on the entire surface of the belt is very much small or negligible.
  • the Metal threads 12, 14, 16 with each other according to the respective weaving process interwoven to serve as a skeleton of volume 10 to produce metallic fabrics.
  • This metal mesh is then dipped in a liquid plastic bath to fill the gaps to fill in the tissue.
  • the belt can 10 a final treatment e.g. by grinding the belt surfaces be subjected.
  • the preferred application of the tape according to the invention is use as a sealing tape in dry areas of paper machines.
  • the sheet-like fabric can be produced in such a way that that protrudes at least in one direction in the edge regions bead-like thickenings are present, which are not shown in the figure are.
  • sealing beads can e.g. made by weaving the metal threads and thus also trained in the manufacture of the flat fabric become. It is also possible to put the sealing beads on the surface of the surface fabric to form plastic material.
  • the sealing beads can also be from another, neither for the reinforcement still used for the filling material or a material mixture or a composite material.
  • the belt according to the invention is a drying device of the paper machine, e.g. a drying cylinder with a heatable surface, together with the paper web to be dried and an or several sieves fed so that the tape, the two sealing beads of the belt and the heated surface of the drying cylinder Drying space extending over part of the circumference of the drying cylinder limit.
  • the drying room is located in this drying room Paper web as well as the sieves.
  • the paper web can be placed directly on the drying cylinder rest while the sieves between the paper web and the sealing tape according to the invention are arranged.
  • the side sealing beads of the Belt either directly on the drying cylinder or on one on the Sieve lying on the cylinder surface.

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  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Woven Fabrics (AREA)
  • Paper (AREA)

Abstract

The fourdrinier (10) for a papermaking machine has a compound structure with longitudinal strength carriers (12,14,16), and a filling material (18) in the spaces between them which at least partially fills them out. The strength carriers (12,14,16) have a high thermal conductivity, as metal filaments with a circular cross section and/or as narrow strips and/or ribbons. At least some have a changing cross section along their length. The filling material (18) is of plastics. The fourdrinier is generally impermeable to liquids. The edges of the fourdrinier have a bead thickening formed by the carriers (12,14,16), the filling material (18) and/or an additional material or material mixture. At least one surface of the fourdrinier (10) has a closed structure formed by the carriers (12,14,16), and at least one surface is smooth, formed by the filling material (18). The fourdrinier structure is formed by weaving the carriers (12,14,16) together. An Independent claim is included for a fourdrinier prodn. process where the filaments (12,14,16) are woven together to form the material, and the spaces between them are at least partially filled by a plastics material (18). Preferred Features: The woven material is immersed in a fluid plastics (18) or is sprayed with the plastics liquid. After immersion or spraying, the surfaces are smoothed by grinding. Or the plastics coating is removed especially by scraping and/or pressing it into the intermediate spaces. The filaments are woven according to the required fourdrinier surface structure and especially according to the required heat dissipation.

Description

Die Erfindung betrifft ein Band für Maschinen zur Herstellung von Materialbahnen, insbesondere Papierbahnen.The invention relates to a belt for machines for the production of material webs, especially paper webs.

Es ist bekannt, in Papiermaschinen zum Stützen der Papierbahn Siebe aus Metallfäden oder Kunststoffäden zu verwenden. Aufgrund ihrer Durchlässigkeit können derartige Siebe nicht als Dichtbänder eingesetzt werden, die in Trockenbereichen von Papiermaschinen dazu dienen, einen an eine beheizte Fläche, z.B. die Oberfläche eines Trockenzylinders, angrenzenden Trockenraum abzudichten. Für solche Zwecke werden Bänder aus Vollmetall verwendet, deren Handhabung schwierig ist und die insbesondere aufgrund ihres hohen Gewichts und ihrer geringen Flexibilität die Bandgeschwindigkeit und somit die Arbeitsgeschwindigkeit der Papiermaschine nach oben begrenzen. Ein weiterer Nachteil von Vollmetallbändern besteht darin, daß ihre Breite aus Handhabungsgründen begrenzt ist und maximal etwa 2 m beträgt.It is known in paper machines to support the paper webs to use from metal threads or plastic threads. Because of your Such filters cannot be used as sealing tapes for permeability that are used in dry areas of paper machines, a to a heated surface, e.g. the surface of a drying cylinder, adjacent To seal the drying room. For such purposes, tapes made of solid metal, the handling of which is difficult and which in particular due to their high weight and low flexibility the Belt speed and thus the working speed of the paper machine limit up. Another disadvantage of full metal strips is that their width is limited for handling reasons and is a maximum of about 2 m.

Es ist das der Erfindung zugrundeliegende Problem (Aufgabe), ein Band der eingangs genannten Art sowie ein Verfahren zu dessen Herstellung zu schaffen, das einfach zu handhaben ist und insbesondere als Dichtband eingesetzt werden kann.It is the problem underlying the invention, a tape of the type mentioned at the beginning and a method for its production create that is easy to use and especially as a sealing tape can be used.

Die Lösung dieser Aufgabe erfolgt durch die Merkmale des Anspruchs 1 und insbesondere dadurch, daß das Band aus einem Verbundmaterial hergestellt ist, welches ein aus bevorzugt langgestreckten Festigkeitsträgern angefertigtes Flächengebilde umfaßt, in welchem Zwischenräume zwischen den Festigkeitsträgern zumindest teilweise mit einem Füllmaterial gefüllt sind.This object is achieved by the features of claim 1 and in particular in that the tape is made of a composite material is produced, which is a preferably elongated strength members manufactured fabric includes, in which spaces between the reinforcements at least partially with a filler are filled.

Aufgrund des Verbindens von Festigkeitsträgern und Füllmaterial kann - im Vergleich zu Vollmetallbändern - das Gewicht des erfindungsgemäßen Bandes reduziert werden, ohne die Stabilität und die Festigkeit des Bandes zu beeinträchtigen. Des weiteren ist das Band durch das erfindungsgemäße Verbundmaterial wesentlich flexibler. Das erfindungsgemäße Band kann prinzipiell in einer beliebigen Breite hergestellt werden, die auch mehr als 2 m betragen kann. Ein weiterer Vorteil ist, daß die Herstellungskosten niedriger liegen als bei Bändern aus Vollmetall. Die Erfindung ermöglicht es außerdem, durch Verändern des Anteils der Festigkeitsträger an der Gesamtoberfläche die Oberflächenbeschaffenheit und insbesondere die Wärmeleitfähigkeit des Bandes und somit dessen Wärmedurchgangsverhalten gezielt einzustellen. Insgesamt wird durch die Erfindung somit ein einfach handhabbares, kostengünstiges und vielseitig einsetzbares Band geschaffen.Due to the connection of strength members and filler material can - compared to full metal strips - the weight of the invention Band can be reduced without losing stability and firmness of the tape. Furthermore, the tape is due to the invention Composite material much more flexible. The invention In principle, tape can be made in any width, which can also be more than 2 m. Another advantage is that the Manufacturing costs are lower than for strips made of full metal. The The invention also makes it possible to change the proportion of the reinforcement the surface quality of the total surface and in particular the thermal conductivity of the tape and thus its Adjust heat transfer behavior in a targeted manner. Overall, the Invention thus an easy to use, inexpensive and versatile usable tape created.

Gemäß einer bevorzugten Ausführungsform der Erfindung ist das Verbundmaterial zumindest im wesentlichen fluidundurchlässig.According to a preferred embodiment of the invention, the composite material is at least essentially fluid impermeable.

Hierdurch kann das erfindungsgemäße Band als Dichtband in Trockenbereichen z.B. von Papiermaschinen eingesetzt werden. Das die Zwischenräume im Flächengebilde ausfüllende Material verhindert, daß Feuchtigkeit aus der zu trocknenden Material- bzw. Papierbahn, die durch einen Trockenraum, der von der beheizten Fläche z.B. eines Trockenzylinders und dem erfindungsgemäßen Band begrenzt wird, hindurchgeführt wird, unkontrolliert in die Umgebung entweichen kann.As a result, the tape according to the invention can be used as a sealing tape in dry areas e.g. used by paper machines. That the gaps Filling material in the fabric prevents moisture from the material or paper web to be dried, which is replaced by a Drying room, e.g. from the heated area a drying cylinder and the band according to the invention is limited, is passed through, can escape into the environment in an uncontrolled manner.

Gemäß einem weiteren bevorzugten Ausführungsbeispiel der Erfindung sind in den Randbereichen wulstartige Verdickungen vorgesehen, die bevorzugt von den Festigkeitsträgern des Flächengebildes gebildet sind.According to a further preferred embodiment of the invention bead-like thickenings are provided in the edge regions, which are preferred are formed by the reinforcement of the fabric.

Hierbei ist das erfindungsgemäße Band mit integrierten Dichtwülsten versehen, die bei der Herstellung des Flächengebildes mit ausgebildet werden können. Die Dichtwülste, die aus Metall oder Kunststoff bestehen können, dichten zusammen mit der beheizten Fläche und dem zwischen den Dichtwülsten liegenden Bereich des Bandes den vorstehend erwähnten Trokkenraum für die zu trocknende Materialbahn gegenüber der Umgebung ab. Separate Dichtungen sind erfindungsgemäß somit nicht erforderlich.Here, the band according to the invention is provided with integrated sealing beads, which are also formed in the manufacture of the fabric can. The sealing beads, which can be made of metal or plastic, seal together with the heated surface and that between the sealing beads lying area of the belt the above-mentioned drying area for the material web to be dried compared to the environment from. Separate seals are therefore not necessary according to the invention.

Gemäß einer weiteren bevorzugten Ausführungsform der Erfindung ist auf wenigstens einer Seite von den Festigkeitsträgern eine zumindest im wesentlichen geschlossene Oberfläche gebildet.According to a further preferred embodiment of the invention is on at least one side of the strength members at least essentially closed surface formed.

Durch die geschlossene Oberfläche wird ein großflächiger Kontakt des für die Festigkeitsträger verwendeten Materials mit z.B. der beheizten Fläche einer Trockeneinrichtung, beispielsweise eines Trockenzylinders, oder mit einem Kühlfluid ermöglicht. Bei Verwendung eines Materials hoher Wärmeleitfähigkeit, insbesondere von Metall, für die Festigkeitsträger wird die Wärmeleitfähigkeit des Bandes und somit der Durchgang von Wärme durch das Band maximiert. Es ist auch möglich, das Band auf beiden Seiten jeweils mit einer von den Festigkeitsträgern gebildeten, zumindest im wesentlichen geschlossenen Oberfläche zu versehen. Auf diese Weise kann bei Verwendung von Metall für die Festigkeitsträger ein Wärmedurchgangsverhalten des erfindungsgemäßen Bandes erzielt werden, welches zumindest näherungsweise demjenigen eines Vollmetallbandes entspricht.Due to the closed surface, a large-area contact of the for the reinforcement material used with e.g. the heated area a drying device, for example a drying cylinder, or with allows a cooling fluid. When using a material with high thermal conductivity, especially of metal, for the reinforcement Thermal conductivity of the belt and thus the passage of heat maximized by the tape. It is also possible to put the tape on both Sides each with one formed by the reinforcement, at least to provide a substantially closed surface. In this way can have a heat transfer behavior when using metal for the reinforcement of the tape according to the invention, which corresponds at least approximately to that of a full metal strip.

Gemäß einem weiteren bevorzugten Ausführungsbeispiel der Erfindung sind die Festigkeitsträger miteinander verwoben.According to a further preferred embodiment of the invention the reinforcements are interwoven.

Das hierbei von einem Gewebe gebildete Flächengebilde kann vergleichsweise einfach hergestellt und gezielt sowie reproduzierbar mit den jeweils gewünschten Eigenschaften versehen werden. Insbesondere kann durch Auswählen eines bestimmten Webverfahrens der Anteil der Festigkeitsträger an der Gesamtoberfläche des Bandes und somit dessen Wärmedurchgangsverhalten gezielt beeinflußt werden.The fabric formed here can be comparatively simply manufactured and targeted and reproducible with each desired properties. In particular, by Select a specific weaving process for the percentage of reinforcement on the total surface of the belt and thus its heat transfer behavior be influenced in a targeted manner.

Die Lösung der der Erfindung zugrundeliegenden Aufgabe erfolgt des weiteren durch die Merkmale des unabhängigen Verfahrensanspruchs und insbesondere dadurch, daß aus bevorzugt langgestreckten Festigkeitsträgern, insbesondere Metallfäden, ein Flächengebilde angefertigt wird und Zwischenräume zwischen den Festigkeitsträgern zumindest teilweise mit einem Füllmaterial, insbesondere mit Kunststoff, gefüllt werden.The object on which the invention is based is also achieved by the features of the independent process claim and in particular by the fact that from preferably elongated strength members, in particular metal threads, a fabric is made and Gaps between the strength members at least partially a filling material, especially with plastic.

In einer bevorzugten Ausführung des erfindungsgemäßen Verfahrens wird das Flächengebilde in flüssiges Füllmaterial getaucht.In a preferred embodiment of the method according to the invention the fabric is immersed in liquid filling material.

Das Flächengebilde wird hierbei gewissermaßen mit dem Füllmaterial getränkt, wodurch die Zwischenräume auf besonders einfache und schnelle Weise gefüllt werden und die Fluiddichtigkeit des von den Festigkeitsträgern und dem im endgültigen Zustand ausgehärteten Füllmaterial gebildeten Verbundmaterials hergestellt werden kann.The fabric is soaked with the filling material, so to speak which makes the gaps particularly easy and fast Way to be filled and the fluid tightness of the strength members and the filling material hardened in the final state Composite material can be produced.

Nach dem Eintauchen in das Füllmaterial kann überschüssiges Material, das die Oberflächen des Flächengebildes bedeckt, abgestrichen werden, um die die jeweilige Oberfläche bildenden Festigkeitsträger freizulegen. Das Flächengebilde kann dabei derart behandelt werden, daß die Festigkeitsträger und das zwischen den Festigkeitsträgern befindliche Füllmaterial zumindest näherungsweise glatte Oberflächen bilden.After immersing in the filling material, excess material, that covers the surfaces of the fabric, is smeared, to expose the reinforcement that forms the respective surface. The fabric can be treated in such a way that the reinforcement and the filling material located between the reinforcements form at least approximately smooth surfaces.

Weitere bevorzugte Ausführungsformen der Erfindung sind in den Unteransprüchen, der Beschreibung sowie der Zeichnung angegeben.Further preferred embodiments of the invention are in the subclaims, the description and the drawing.

Die Erfindung wird im folgenden beispielhaft unter Bezugnahme auf die Zeichnung beschrieben, deren einzige Figur in einer geschnittenen Seitenansicht teilweise ein Band gemäß einem Ausführungsbeispiel der Erfindung zeigt.The invention will now be described by way of example with reference to the Drawing described, the only figure in a sectional side view partially a tape according to an embodiment of the invention shows.

Das in der Figur dargestellte erfindungsgemäße Band 10 umfaßt ein flächiges Metallgewebe aus miteinander verwobenen Metallfäden 12, 14, 16 als Festigkeitsträger, die bevorzugt aus rostfreiem Stahl oder Bronze hergestellt sind. Grundsätzlich können erfindungsgemäß auch aus verschiedenen Metallen bestehende Fäden zu einem Band verarbeitet werden.The band 10 according to the invention shown in the figure comprises a flat Metal mesh made of interwoven metal threads 12, 14, 16 as reinforcement, which is preferably made of stainless steel or bronze are. Basically, according to the invention can also be made from different Metals existing threads are processed into a tape.

Die Querschnittsform der Festigkeitsträger kann grundsätzlich beliebig gewählt werden, wobei der Querschnitt über die Länge der Festigkeitsträger sowohl konstant sein als auch variieren kann. Die Festigkeitsträger weisen z.B. einen etwa kreisförmigen Querschnitt auf, können aber auch beispielsweise streifen- oder bandförmig ausgebildet sein und z.B. einen Querschnitt in Form eines flachen Rechtecks mit abgerundeten Ecken aufweisen. Auch gemischte Querschnittsformen der Festigkeitsträger innerhalb eines Bandes 10 sind erfindungsgemäß möglich.The cross-sectional shape of the strength members can in principle be arbitrary be chosen, the cross section over the length of the reinforcement can be both constant and vary. The strength members indicate e.g. an approximately circular cross-section, but can also for example, be strip or ribbon-shaped and e.g. one Cross section in the form of a flat rectangle with rounded corners exhibit. Mixed cross-sectional shapes of the reinforcement within a band 10 are possible according to the invention.

In der gezeigten Ausführungsform verlaufen Fäden 16 jeweils paarweise durch von senkrecht dazu verlaufenden Fäden 12, 14 gebildete Fächer. Prinzipiell kann erfindungsgemäß ein beliebiges Webverfahren verwendet werden, um aus den Metallfäden bzw. schmalen Streifen oder Bändern 12, 14, 16 ein bahnförmiges Flächengebilde mit der gewünschten Breite herzustellen.In the embodiment shown, threads 16 each run in pairs by compartments formed by threads 12, 14 running perpendicular thereto. In principle, any weaving method can be used according to the invention be made from the metal threads or narrow strips or strips 12, 14, 16 to produce a sheet-like fabric with the desired width.

In den Zwischenräumen zwischen den einzelnen Fäden 12, 14, 16 befindet sich als Füllmaterial ein Kunststoffmaterial 18, wobei die Fäden 12, 14, 16 als Träger für den Kunststoff 18 dienen. In der dargestellten Schnittebene werden die Oberflächen des Bandes 10 von den in der Figur horizontal verlaufenden Fäden 12, 14 gebildet. In jedem der durch die Fäden 12, 14 festgelegten Fächer können die paarweise verlaufenden Fäden 16 derart in den Kunststoff 18 eingebettet sein, daß eine innige Verbindung zwischen den Fäden 16 und dem Kunststoffmaterial 18 besteht, welche die Fluidundurchlässigkeit des Bandes 10 sicherstellt. Jedoch kann das erfindungsgemäße Band 10 auch derart hergestellt werden, daß auch ohne eine innige Verbindung zwischen Festigkeitsträgern und Kunststoffmaterial die Fluiddichtigkeit gewährleistet ist, und zwar durch einen bei flächigen Bändern durch Druckeinwirkung auftretenden Selbstdichteffekt. Located in the spaces between the individual threads 12, 14, 16 a plastic material 18 as the filler material, the threads 12, 14, 16 serve as a carrier for the plastic 18. In the cutting plane shown the surfaces of the belt 10 are horizontal from those in the figure extending threads 12, 14 formed. In each of the threads 12, 14 fixed subjects, the threads 16 running in pairs can be arranged in this way the plastic 18 be embedded that an intimate connection between the threads 16 and the plastic material 18, which is the fluid impermeability of the band 10 ensures. However, the invention can Volume 10 can also be made such that even without a intimate connection between reinforcements and plastic material the fluid tightness is guaranteed, namely by a flat Tapes due to self-sealing effect.

Grundsätzlich ist erfindungsgemäß die Art und Weise, in der aus Festigkeitsträgern, insbesondere Metallfäden; ein Zwischenräume aufweisendes Flächengebilde hergestellt wird, beliebig und insbesondere in Abhängigkeit von den gewünschten Eigenschaften des Flächengebildes wählbar. Bevorzugt wird jedoch durch ein Webverfahren aus Metallfäden ein flächiges Metallgewebe angefertigt, dessen Webart entsprechend den jeweiligen Anforderungen gewählt wird.Basically, according to the invention, the way in which strength members, in particular metal threads; an interstice Fabric is made arbitrarily and especially depending selectable from the desired properties of the fabric. Prefers however, becomes flat by a weaving process from metal threads Made of metal mesh, its weave according to the respective requirements is chosen.

Dabei können die Metallfäden derart verarbeitet bzw. miteinander verwoben werden, daß das Flächengebilde im wesentlichen geschlossene metallische Oberflächen aufweist, zwischen denen das Füllmaterial, insbesondere Kunststoff, angeordnet ist. Der Anteil des Füllmaterials bzw. des Kunststoffs an der Gesamtoberfläche des Bandes ist hierbei also sehr klein bzw. vernachlässigbar gering.The metal threads can be processed in this way or woven together be that the fabric is essentially closed metallic Has surfaces between which the filling material, in particular Plastic, is arranged. The proportion of the filling material or So plastic on the entire surface of the belt is very much small or negligible.

Zur Herstellung des erfindungsgemäßen Bandes 10 werden zunächst die Metallfäden 12, 14, 16 gemäß dem jeweiligen Webverfahren miteinander verwoben, um das gewissermaßen als Skelett des Bandes 10 dienende metallische Flächengebilde herzustellen. Dieses Metallgewebe wird anschließend in ein Bad aus flüssigem Kunststoff getaucht, um die Zwischenräume in dem Gewebe zu füllen.To produce the tape 10 according to the invention, the Metal threads 12, 14, 16 with each other according to the respective weaving process interwoven to serve as a skeleton of volume 10 to produce metallic fabrics. This metal mesh is then dipped in a liquid plastic bath to fill the gaps to fill in the tissue.

Nach der Entnahme aus dem Tauchbad wird Kunststoffmaterial, das die Oberflächen des nunmehr mit Kunststoff gefüllten Metallgewebes bedeckt, entfernt, um metallisch blanke Oberflächen zu schaffen. Hierzu kann der vorzugsweise noch flüssige Kunststoff beispielsweise durch Abstreichen beseitigt oder in oberflächennahe Zwischenräume gestrichen werden. Dabei können die Oberflächen geglättet werden. Auf diese Weise wird dafür gesorgt, daß der durch das jeweilige Webverfahren bestimmte Anteil der Metallfäden 12, 14, 16 an der Gesamtoberfläche des Bandes 10 im Anschluß an die Kunststoffbehandlung und das Aushärten des Kunststoffes nach wie vor gegeben ist. In einem weiteren Arbeitsschritt kann das Band 10 einer abschließenden Behandlung z.B. durch Schleifen der Bandoberflächen unterzogen werden.After removal from the immersion bath, plastic material that the Surfaces of the metal mesh now filled with plastic, removed to create shiny metallic surfaces. For this, the preferably still liquid plastic, for example by wiping removed or painted in intermediate spaces near the surface. Here the surfaces can be smoothed. This way it will be for that ensured that the proportion of the Metal threads 12, 14, 16 on the total surface of the band 10 in the connection to the plastic treatment and curing of the plastic is still given. In a further step, the belt can 10 a final treatment e.g. by grinding the belt surfaces be subjected.

Wenngleich die vorstehend erläuterte Anwendung eines Kunststoff-Tauchbades die bevorzugte Vorgehensweise darstellt, bestünde eine alternative Möglichkeit zum Einbringen von Kunststoff in die Zwischenräume darin, das Metallgewebe mit flüssigem Kunststoff zu besprühen und - falls gewünscht - anschließend den die Oberflächen bedeckenden Kunststoff zu entfernen, um die Metallfäden freizulegen.Although the above-described application of a plastic immersion bath the preferred approach would be an alternative Possibility to insert plastic into the spaces in between, spray the metal mesh with liquid plastic and - if desired - then the plastic covering the surfaces Remove to expose the metal threads.

Die bevorzugte Anwendung des erfindungsgemäßen Bandes besteht in dem Einsatz als Dichtband in Trockenbereichen von Papiermaschinen. Hierzu kann das bahnförmige Flächengebilde derart hergestellt werden, daß in den Randbereichen zumindest in eine Richtung abstehende wulstartige Verdickungen vorhanden sind, die in der Figur nicht dargestellt sind.The preferred application of the tape according to the invention is use as a sealing tape in dry areas of paper machines. For this purpose, the sheet-like fabric can be produced in such a way that that protrudes at least in one direction in the edge regions bead-like thickenings are present, which are not shown in the figure are.

Diese Dichtwülste können z.B. durch Verweben der Metallfäden hergestellt und somit bei der Anfertigung des Flächengewebes mit ausgebildet werden. Es ist auch möglich, die Dichtwülste durch auf der Oberfläche des Flächengewebes aufliegendes Kunststoffmaterial zu bilden. Die Dichtwülste können auch aus einem weiteren, weder für die Festigkeitsträger noch für das Füllmaterial verwendeten Material oder einer Materialmischung bzw. einem Materialverbund bestehen. These sealing beads can e.g. made by weaving the metal threads and thus also trained in the manufacture of the flat fabric become. It is also possible to put the sealing beads on the surface of the surface fabric to form plastic material. The sealing beads can also be from another, neither for the reinforcement still used for the filling material or a material mixture or a composite material.

Das erfindungsgemäße Band wird einer Trockeneinrichtung der Papiermaschine, z.B. einem eine beheizbare Oberfläche aufweisenden Trockenzylinder, zusammen mit der zu trocknenden Papierbahn und einem oder mehreren Sieben derart zugeführt, daß das Band, die beiden Dichtwülste des Bandes und die beheizte Oberfläche des Trockenzylinders einen sich über einen Teil des Umfangs des Trockenzylinders erstreckenden Trockenraum begrenzen. In diesem Trockenraum befinden sich die zu trocknende Papierbahn sowie die Siebe. Die Papierbahn kann direkt auf dem Trockenzylinder aufliegen, während die Siebe zwischen der Papierbahn und dem erfindungsgemäßen Dichtband angeordnet sind. In Abhängigkeit von den Breiten des Bandes und der Siebe liegen die seitlichen Dichtwülste des Bandes entweder direkt auf dem Trockenzylinder oder auf einem auf der Zylinderoberfläche liegenden Sieb auf.The belt according to the invention is a drying device of the paper machine, e.g. a drying cylinder with a heatable surface, together with the paper web to be dried and an or several sieves fed so that the tape, the two sealing beads of the belt and the heated surface of the drying cylinder Drying space extending over part of the circumference of the drying cylinder limit. The drying room is located in this drying room Paper web as well as the sieves. The paper web can be placed directly on the drying cylinder rest while the sieves between the paper web and the sealing tape according to the invention are arranged. Depending on the Widths of the band and the sieves are the side sealing beads of the Belt either directly on the drying cylinder or on one on the Sieve lying on the cylinder surface.

Wegen der Fluidundurchlässigkeit des erfindungsgemäßen Verbundmaterials kann aus der Papierbahn verdampfende Feuchtigkeit nicht aus dem durch das Band abgedichteten Trockenraum entweichen. Die gute Wärmeleitfähigkeit des Bandes gewährleistet einen raschen Wärmeabtransport, so daß die Feuchtigkeit an dem Sieb kondensiert und von diesem aus dem Trockenbereich herausgetragen wird. Because of the fluid impermeability of the composite material according to the invention moisture from the paper web cannot evaporate from the escape the drying room sealed by the tape. The good thermal conductivity the belt ensures rapid heat dissipation, so that moisture condenses on and from the screen is carried out of the dry area.

BezugszeichenlisteReference list

1010th
Bandtape
12, 1412, 14
MetallfädenMetal threads
1616
MetallfädenMetal threads
1818th
KunststoffmaterialPlastic material

Claims (18)

Band für Maschinen zur Herstellung von Materialbahnen, insbesondere Papierbahnen, das aus einem Verbundmaterial hergestellt ist, welches ein aus bevorzugt langgestreckten Festigkeitsträgern (12, 14, 16) angefertigtes Flächengebilde umfaßt, in welchem Zwischenräume zwischen den Festigkeitsträgern (12, 14, 16) zumindest teilweise mit einem Füllmaterial (18) gefüllt sind.Belt for machines for the production of material webs, in particular Paper webs made of a composite material which consists of preferably elongated strength members (12, 14, 16) manufactured fabric, in which gaps between the strength members (12, 14, 16) at least partially are filled with a filling material (18). Band nach Anspruch 1,
dadurch gekennzeichnet,
daß die Festigkeitsträger (12, 14, 16) aus einem Material hoher Wärmeleitfähigkeit, insbesondere aus Metall, bevorzugt aus rostfreiem Stahl und/oder Bronze, hergestellt sind.
Band according to claim 1,
characterized by
that the strength members (12, 14, 16) are made from a material with high thermal conductivity, in particular from metal, preferably from stainless steel and / or bronze.
Band nach Anspruch 1 oder 2,
dadurch gekennzeichnet,
daß die Festigkeitsträger in Form von Fäden, insbesondere Metallfäden (12, 14, 16), vorgesehen sind.
Band according to claim 1 or 2,
characterized by
that the strength members in the form of threads, in particular metal threads (12, 14, 16), are provided.
Band nach zumindest einem der vorhergehenden Ansprüche,
dadurch gekennzeichnet,
daß die Festigkeitsträger (12, 14, 16) einen zumindest näherungsweise kreisförmigen Querschnitt aufweisen und/oder in Form von insbesondere schmalen Streifen und/oder Bändern vorgesehen sind.
Band according to at least one of the preceding claims,
characterized by
that the strength members (12, 14, 16) have an at least approximately circular cross section and / or are provided in the form of, in particular, narrow strips and / or bands.
Band nach zumindest einem der vorhergehenden Ansprüche,
dadurch gekennzeichnet,
daß zumindest einige der Festigkeitsträger jeweils eine über ihre Länge variierende Querschnittsform aufweisen.
Band according to at least one of the preceding claims,
characterized by
that at least some of the strength members each have a cross-sectional shape that varies over their length.
Band nach zumindest einem der vorhergehenden Ansprüche,
dadurch gekennzeichnet,
daß als Füllmaterial (18) Kunststoff vorgesehen ist.
Band according to at least one of the preceding claims,
characterized by
that plastic is provided as filler (18).
Band nach zumindest einem der vorhergehenden Ansprüche,
dadurch gekennzeichnet,
daß das Verbundmaterial zumindest im wesentlichen fluidundurchlässig ist.
Band according to at least one of the preceding claims,
characterized by
that the composite material is at least substantially fluid impermeable.
Band nach zumindest einem der vorhergehenden Ansprüche,
dadurch gekennzeichnet,
daß in den Randbereichen insbesondere wulstartige Verdickungen vorgesehen sind, die von den Festigkeitsträgern (12, 14, 16) des Flächengebildes, dem Füllmaterial (18) und/oder zumindest einem weiteren Material oder wenigstens einer Materialmischung gebildet sind.
Band according to at least one of the preceding claims,
characterized by
that, in particular, bead-like thickenings are provided in the edge regions, which are formed by the strength members (12, 14, 16) of the flat structure, the filler material (18) and / or at least one further material or at least one material mixture.
Band nach zumindest einem der vorhergehenden Ansprüche,
dadurch gekennzeichnet,
daß auf wenigstens einer Seite von den Festigkeitsträgern (12, 14, 16) eine zumindest im wesentlichen geschlossene Oberfläche gebildet ist.
Band according to at least one of the preceding claims,
characterized by
that an at least substantially closed surface is formed on at least one side by the strength members (12, 14, 16).
Band nach zumindest einem der vorhergehenden Ansprüche,
dadurch gekennzeichnet,
daß auf wenigstens einer Seite die Festigkeitsträger (12, 14, 16) und das Füllmaterial (18) eine zumindest näherungweise glatte Oberfläche bilden.
Band according to at least one of the preceding claims,
characterized by
that on at least one side the strength members (12, 14, 16) and the filler material (18) form an at least approximately smooth surface.
Band nach zumindest einem der vorhergehenden Ansprüche,
dadurch gekennzeichnet,
daß das Flächengebilde als Sieb ausgebildet ist.
Band according to at least one of the preceding claims,
characterized by
that the fabric is designed as a sieve.
Band nach zumindest einem der vorhergehenden Ansprüche,
dadurch gekennzeichnet,
daß die Festigkeitsträger (12, 14, 16) miteinander verwoben sind.
Band according to at least one of the preceding claims,
characterized by
that the strength members (12, 14, 16) are woven together.
Verfahren zur Herstellung eines Bandes insbesondere nach einem der Ansprüche 1 bis 12, bei dem aus bevorzugt langgestreckten Festigkeitsträgern (12, 14, 16), insbesondere Metallfäden, ein Flächengebilde angefertigt wird und Zwischenräume zwischen den Festigkeitsträgern (12, 14, 16) zumindest teilweise mit einem Füllmaterial (18), insbesondere mit Kunststoff, gefüllt werden.Process for producing a tape, in particular according to a of claims 1 to 12, in the case of preferably elongated strength members (12, 14, 16), in particular metal threads, a flat structure is made and spaces between the strength members (12, 14, 16) at least partially with a filling material (18), in particular filled with plastic. Verfahren nach Anspruch 13,
dadurch gekennzeichnet,
daß das Flächengebilde in flüssiges Füllmaterial (18) getaucht wird.
A method according to claim 13,
characterized by
that the fabric is immersed in liquid filler material (18).
Verfahren nach Anspruch 13 oder 14,
dadurch gekennzeichnet,
daß das Flächengebilde mit flüssigem Füllmaterial (18) besprüht wird.
The method of claim 13 or 14,
characterized by
that the fabric is sprayed with liquid filling material (18).
Verfahren nach zumindest einem der Ansprüche 13 bis 15,
dadurch gekennzeichnet,
daß nach der Behandlung mit insbesondere flüssigem Füllmaterial (18) die Oberflächen des Flächengebildes geglättet werden und/oder das Flächengebilde einer abschließenden Oberflächenbehandlung insbesondere durch Schleifen der Oberflächen unterzogen wird.
Method according to at least one of claims 13 to 15,
characterized by
that after the treatment with in particular liquid filling material (18), the surfaces of the fabric are smoothed and / or the fabric is subjected to a final surface treatment, in particular by grinding the surfaces.
Verfahren nach zumindest einem der Ansprüche 13 bis 16,
dadurch gekennzeichnet,
daß die Oberflächen des Flächengebildes bedeckendes Füllmaterial (18) entfernt, insbesondere abgestrichen, und/oder in die Zwischenräume gestrichen wird.
Method according to at least one of claims 13 to 16,
characterized by
that the filling material (18) covering the surfaces of the fabric is removed, in particular wiped off, and / or is wiped into the spaces.
Verfahren nach zumindest einem der Ansprüche 13 bis 17,
dadurch gekennzeichnet,
daß die Festigkeitsträger (12, 14, 16) miteinander verwoben werden, wobei bevorzugt das Webverfahren jeweils in Abhängigkeit von der gewünschten Oberflächenbeschaffenheit, insbesondere von dem gewünschten Wärmedurchgangsverhalten, gewählt wird.
Method according to at least one of claims 13 to 17,
characterized by
that the strength members (12, 14, 16) are interwoven with one another, the weaving method preferably being selected in each case as a function of the desired surface quality, in particular of the desired heat transfer behavior.
EP99123453A 1999-01-13 1999-11-25 Band for making a web material Expired - Lifetime EP1026313B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19900989 1999-01-13
DE19900989A DE19900989A1 (en) 1999-01-13 1999-01-13 Belt for machines for the production of material webs

Publications (3)

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EP1026313A2 true EP1026313A2 (en) 2000-08-09
EP1026313A3 EP1026313A3 (en) 2001-05-09
EP1026313B1 EP1026313B1 (en) 2005-04-13

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US (1) US7005045B1 (en)
EP (1) EP1026313B1 (en)
DE (2) DE19900989A1 (en)

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US7005045B1 (en) 2006-02-28
DE19900989A1 (en) 2000-07-27
EP1026313B1 (en) 2005-04-13
EP1026313A3 (en) 2001-05-09

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