EP1798339A1 - Transport belt - Google Patents

Transport belt Download PDF

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Publication number
EP1798339A1
EP1798339A1 EP20060122504 EP06122504A EP1798339A1 EP 1798339 A1 EP1798339 A1 EP 1798339A1 EP 20060122504 EP20060122504 EP 20060122504 EP 06122504 A EP06122504 A EP 06122504A EP 1798339 A1 EP1798339 A1 EP 1798339A1
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EP
European Patent Office
Prior art keywords
support structure
conveyor belt
surface structure
sections
polymer surface
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Withdrawn
Application number
EP20060122504
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German (de)
French (fr)
Inventor
Arved Westerkamp
Hubert Walkenhaus
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
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Voith Paper Patent GmbH
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Filing date
Publication date
Application filed by Voith Paper Patent GmbH filed Critical Voith Paper Patent GmbH
Publication of EP1798339A1 publication Critical patent/EP1798339A1/en
Withdrawn legal-status Critical Current

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    • D—TEXTILES; PAPER
    • D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
    • D21F—PAPER-MAKING MACHINES; METHODS OF PRODUCING PAPER THEREON
    • D21F3/00—Press section of machines for making continuous webs of paper
    • D21F3/02—Wet presses
    • D21F3/0209—Wet presses with extended press nip
    • D21F3/0218—Shoe presses
    • D21F3/0227—Belts or sleeves therefor
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T442/00—Fabric [woven, knitted, or nonwoven textile or cloth, etc.]
    • Y10T442/20—Coated or impregnated woven, knit, or nonwoven fabric which is not [a] associated with another preformed layer or fiber layer or, [b] with respect to woven and knit, characterized, respectively, by a particular or differential weave or knit, wherein the coating or impregnation is neither a foamed material nor a free metal or alloy layer

Definitions

  • the invention relates to a conveyor belt according to the preamble of patent claim 1.
  • conveyor belts are used in a paper machine wherever it is necessary to bridge open trajectories when guiding the paper web between different presses in the press section or between the press section and the dryer section.
  • Such conveyor belts are also used to guide a paper web through a paper web through one or more press nips.
  • Such conveyor belts can thus be so-called ENP belts (Extended Nip Press Belts) or shoe press belts or smoothing belts (so-called smoothing belts).
  • the conveyor belts known from the prior art have a load-bearing support structure formed by one or more fabrics, for example, which is generally completely encased by a polymeric surface structure, wherein the support structure forms a firm and intimate connection in the area of contact with the polymeric surface structure ,
  • the conveyor belt is reinforced.
  • the contact area between the carrier structure and the polymeric area structure comprises sections in which the carrier structure can move relative to the polymeric area structure
  • the load-receiving carrier structure is at least partially embedded in the polymer area structure so to speak "floating".
  • at least part of the carrier structure can thus move in the contact region relative to the surface structure, as a result of which the flexural rigidity of the conveyor belt is greatly reduced.
  • the relative movability between the carrier structure and the polymeric surface structure in the contact region can be provided, for example, by the carrier structure not making any adhesive connection with the polymeric surface structure in the sections in which the carrier structure can move relative to the polymeric surface structure.
  • the support structure may in this case comprise one or more textile fabrics, wherein a textile surface formed, for example, alone or in combination may comprise: one or more fabrics, one or more scrims, one or more Fadengewirke, one or more extruded or printed grid structures, one or more Membrane, one or more nonwovens.
  • MD-extending filaments may be " floating " stored in the polymeric sheet structure
  • CD-extending filaments may be solid, i. relative to this immovable, are connected to the polymeric surface structure.
  • An inventive development of the invention accordingly provides that the support structure and the polymeric surface structure are substantially immovable relative to each other in sections of the contact region extending in the transverse direction of the conveyor belt, whereas the support structure and the polymeric surface structure are in the longitudinal direction of the conveyor belt extending portions of the contact region are movable relative to each other.
  • a separation layer is arranged at least in sections, wherein the separation layer comprises in particular a material by which the frictional resistance in the contact region between the support structure and the polymeric surface structure is reduced. Due to the frictional resistance, the bending stiffness of the conveyor belt can be adjusted specifically.
  • At least the surface of the support structure and / or at least the surface of the polymeric surface structure could be treated or configured at least in sections in the contact region such that the frictional resistance in the contact region between the support structure and the polymeric surface structure is reduced.
  • One possibility for reducing the frictional resistance is, for example, that the materials of the polymeric surface structure and the reinforcing structure in the contact region have a mutually different surface energy.
  • sizing / spin finish chemical equipment of textile raw materials (eg fibers) or semi-finished / finished products (eg threads, fabrics, scrims) are understood to be applied to these, to adjust their properties targeted.
  • the or at least some of the threads of the support structure are at least partially encased with the release liner, wherein the separating layer forming material alone or in combination, for example.
  • Wax, starch, oil, silicone may include.
  • the release liner may also be formed by a material which is more flexible than the polymeric sheet structure and the support structure and solid with the sheet structure and support structure, i. for example, adhesive, is connected.
  • a further advantageous embodiment of the invention provides that the polymeric surface structure completely encases the support structure. If, for example, the carrier structure in the form of a woven fabric is movable relative to the entire area of contact with the polymeric surface structure and the polymeric surface structure completely surrounds the fabric, then the polymer material arranged on both sides of the support structure is connected to one another via the polymer material which passes through the mesh of the fabric.
  • the conveyor belt according to the invention preferably comprises a side which can be brought into contact with the material web and which is formed by a first surface of the polymeric surface structure.
  • one of the first surface opposite arranged second surface of the polymeric surface structure forms the side of the conveyor belt, which can be brought into contact with the machine.
  • Another embodiment of the invention provides that the conveyor belt is impermeable to fluid.
  • the first surface may be hydrophilic or hydrophobic. However, it is also possible that the first surface comprises hydrophilic and hydrophobic sections.
  • the first surface may be smooth or textured.
  • the polymeric surface structure in the region of the first surface may comprise a plastic material having a hardness in the range of Shore A 40 to 100 Shore A, wherein, for example, fillers are embedded in the plastic material.
  • a possible embodiment of the first surface is, for example, in the EP 0 576 115 B1 described in this regard is fully incorporated in the Offenbahrungsgehalt this application.
  • FIG. 1 shows an embodiment of a conveyor belt 1 according to the invention with a load-bearing support structure 3 formed by a thread arrangement consisting of a number of mutually parallel threads 2, which is completely embedded in a polymeric surface structure 4.
  • the polymeric surface structure 4 in this case has a first surface 7, which forms the side of the conveyor belt 1, which can be brought into contact with a material web.
  • the polymeric surface structure 4 has a second surface 8 arranged opposite the first surface 7, which forms the side of the conveyor belt 1 which can be brought into contact with the machine.
  • polymeric surface structure 4 is impermeable to fluid, so that the conveyor belt 1 is impermeable to fluid.
  • Figure 1 shows a section perpendicular to the longitudinal extent of the threads 2, wherein the threads 2 in the intended machine direction (MD direction) of the conveyor belt 1 extend.
  • the threads 2 and the threads 2 enveloping polymeric surface structure 4 form a contact region 5 from.
  • the carrier structure 3 can be moved relative to the polymeric surface structure 4 in the contact region 5, as can be seen in particular from the representation of FIG. 2, which shows a section through the conveyor belt 1 in MD direction in unbent (FIG. 2a) and bent state (FIG. 2b) ) shows.
  • the relative mobility between the support structure 3 and the polymeric surface structure 4 in the contact region 5 is achieved by a separating layer 6 is arranged in the contact region 5 between the support structure 3 and the polymeric surface structure 4, which comprises a material through which the frictional resistance in Contact area 5 between the support structure 3 and the polymeric surface structure 4 is reduced.
  • the separating layer 6 in this case completely envelopes the filaments 2 along their longitudinal extent, the separating layer 6 being formed by silicone oil.

Abstract

The transport belt (1) for a paper-, cardboard- or tissue processing machine, comprises a load receiving support structure (3), which is completely covered by a polymer surface structure (4) in section-wise manner. The polymer surface structure and the support structure contact themselves directly or indirectly in section-wise manner. A contact area (5) between the support structure and the polymer surface structure includes sections, in which the support structure is moved itself relative to the polymer surface structure. A separating layer (6) is arranged in the contact area. The transport belt (1) for a paper-, cardboard- or tissue processing machine, comprises a load receiving support structure (3), which is completely covered by a polymer surface structure (4) in section-wise manner. The polymer surface structure and the support structure contact themselves directly or indirectly in section-wise manner. A contact area (5) between the support structure and the polymer surface structure includes sections, in which the support structure is moved itself relative to the polymer surface structure. A separating layer (6) is arranged in the contact area. The support structure in the sections receives no adhesive connection with the polymer surface structure. The support structure comprises a fabric, thread arrangement and thread woven fabric. The threads of the support structure are covered with the separating layer in section-wise manner. The separating layer has a material, by which the frictional resistance is reduced in the contact area. The separating layer has wax, starch, oil and silicone. A second surface of the polymer surface structure arranged opposite to the first surface forms the side of the transport belt, which is bringable in contact with the material web. The support structure and the polymer surface structure are immovable relative to each other in the sections of the contact area extending itself in the transverse direction of the transport belt, and are movable relative to each other in the sections of the contact area extending itself in the longitudinal direction of the transport belt. The transport belt is impermeable to the fluid.

Description

Die Erfindung betrifft ein Transportband nach dem Oberbegriff des Patentanspruchs 1.The invention relates to a conveyor belt according to the preamble of patent claim 1.

Transportbänder werden bspw. in einer Papiermaschine überall dort eingesetzt, wo es gilt offene Züge bei der Führung der Papierbahn zwischen verschiedenen Pressen in der Pressenpartie oder zwischen der Pressenpartie und der Trockenpartie zu überbrücken. Solche Transportbänder werden aber auch eingesetzt, um eine Papierbahn durch eine Papierbahn durch einen oder mehrere Pressnips zu führen. solche Transportbänder können somit sog ENP-Belts (Extended Nip Press Belts) oder Schuhpressbelts oder Glättbänder (sog. Smoothing belts) sein.For example, conveyor belts are used in a paper machine wherever it is necessary to bridge open trajectories when guiding the paper web between different presses in the press section or between the press section and the dryer section. However, such conveyor belts are also used to guide a paper web through a paper web through one or more press nips. Such conveyor belts can thus be so-called ENP belts (Extended Nip Press Belts) or shoe press belts or smoothing belts (so-called smoothing belts).

Die aus dem Stand der Technik bekannten Transportbänder weisen eine bspw. durch ein oder mehrere Gewebe gebildete Last aufnehmende Trägerstruktur auf, die in der Regel von einer polymeren Flächenstruktur vollständig ummantelt ist, wobei die Trägerstruktur im Kontaktbereich mit der polymeren Flächenstruktur eine feste und innige Verbindung eingeht.The conveyor belts known from the prior art have a load-bearing support structure formed by one or more fabrics, for example, which is generally completely encased by a polymeric surface structure, wherein the support structure forms a firm and intimate connection in the area of contact with the polymeric surface structure ,

Durch die Trägerstruktur wird hierbei das Transportband verstärkt.By the support structure in this case the conveyor belt is reinforced.

Durch die feste und innige Verbindung zwischen der Trägerstruktur und der diese einbettenden polymeren Flächenstruktur wird oftmals eine unerwünscht hohe Steifigkeit des Transportbandes erreicht.Due to the firm and intimate connection between the support structure and the embedding polymeric surface structure, an undesirably high rigidity of the conveyor belt is often achieved.

Die hohe Steifigkeit solcher Transportbänder wirkt sich bei deren Einbau in die Papiermaschine durch die hohen Biegekräfte, die hierbei aufzubringen sind, negativ aus. Auch beim Betrieb solcher Transportbänder in der Papiermaschine sind hohe Biegekräfte aufzubringen, was eine erhöhte Lastaufnahme der Papiermaschine zur Folge hat.The high rigidity of such conveyor belts has a negative effect on their installation in the paper machine due to the high bending forces which are to be applied in this case. Also in the operation of such conveyor belts in the paper machine high bending forces are applied, resulting in an increased load capacity of the paper machine for Episode has.

Es ist die Aufgabe der vorliegenden Erfindung ein Transportband der Eingangs genannten Art derart zu verbessern, dass die beschriebenen Nachteile unterbunden oder zumindest reduziert werden.It is the object of the present invention to improve a conveyor belt of the type mentioned in such a way that the described disadvantages are prevented or at least reduced.

Die Aufgabe wird gelöst durch ein Transportband mit den Merkmalen des Patentanspruchs 1.The object is achieved by a conveyor belt having the features of patent claim 1.

Dadurch, dass der Kontaktbereich zwischen der Trägerstruktur und der polymeren Flächenstruktur Abschnitte umfasst, in denen sich die Trägerstruktur relativ zur polymeren Flächenstruktur bewegen kann, wird die Last aufnehmende Trägerstruktur zumindest abschnittweise sozusagen "schwimmend" in der polymeren Flächenstruktur eingebettet. Bei einer Biegung der Transportbandes kann sich somit zumindest ein Teil der Trägerstruktur im Kontaktbereich relativ zur Flächenstruktur bewegen, wodurch die Biegesteifigkeit des Transportbandes stark verringert wird.Due to the fact that the contact area between the carrier structure and the polymeric area structure comprises sections in which the carrier structure can move relative to the polymeric area structure, the load-receiving carrier structure is at least partially embedded in the polymer area structure so to speak "floating". In the event of a bending of the conveyor belt, at least part of the carrier structure can thus move in the contact region relative to the surface structure, as a result of which the flexural rigidity of the conveyor belt is greatly reduced.

Vorteilhafte Weiterbildungen der Erfindung sind in den Unteransprüchen angegeben.Advantageous developments of the invention are specified in the subclaims.

Die relative Bewegbarkeit zwischen Trägerstruktur und polymerer Flächenstruktur im Kontaktbereich kann bspw. dadurch bereitgestellt werden, indem die Trägerstruktur in den Abschnitten in denen sich die Trägerstruktur relativ zur polymeren Flächenstruktur bewegen kann, mit der polymeren Flächenstruktur keine adhäsive Verbindung eingeht.The relative movability between the carrier structure and the polymeric surface structure in the contact region can be provided, for example, by the carrier structure not making any adhesive connection with the polymeric surface structure in the sections in which the carrier structure can move relative to the polymeric surface structure.

Die Trägerstruktur kann hierbei ein oder mehrere textile Flächengebilde umfassen, wobei ein textiles flächengebildet bspw. allein oder in Kombination umfassen kann: ein oder mehrere Gewebe, ein oder mehrere Fadengelege, ein oder mehrere Fadengewirke, ein oder mehrere extrudierte oder gedruckte Gitterstrukturen, eine odere mehrere Membrane, ein oder mehrere Vliese.The support structure may in this case comprise one or more textile fabrics, wherein a textile surface formed, for example, alone or in combination may comprise: one or more fabrics, one or more scrims, one or more Fadengewirke, one or more extruded or printed grid structures, one or more Membrane, one or more nonwovens.

In diesem Zusammenhang ist anzumerken, dass bspw. sich in MD-Richtung erstreckende Fäden "schwimmend" in der polymeren Flächenstruktur gelagert sein können, wohingegen sich in CD-Richtung erstreckende fest, d.h. relativ zu dieser unbeweglich, mit der polymeren Flächenstruktur verbunden sind. Hierdurch wird eine oftmals erforderliche Quersteifigkeit des Transportbandes, die für eine gute Führung des Bandes in der Maschine notwendig ist, erhalten wohingegen die Streifigkeit in Längsrichtung des Transportbandes reduziert wird. Eine erfindungsgemäße Weiterbildung der Erfindung sieht demzufolge vor, dass die Trägerstruktur und die polymere Flächenstruktur in sich in Querrichtung des Transportbandes erstreckenden Abschnitten des Kontaktbereichs im wesentlichen relativ zueinander unbewegbar sind, wohingegen die Trägerstruktur und die polymere Flächenstruktur in sich in Längsrichtung des Transportbandes erstreckenden Abschnitten des Kontaktbereichs relativ zueinander bewegbar sind.In this regard, it should be noted that, for example, MD-extending filaments may be " floating " stored in the polymeric sheet structure, whereas CD-extending filaments may be solid, i. relative to this immovable, are connected to the polymeric surface structure. As a result, an often required transverse stiffness of the conveyor belt, which is necessary for a good guidance of the belt in the machine, obtained while the streaking in the longitudinal direction of the conveyor belt is reduced. An inventive development of the invention accordingly provides that the support structure and the polymeric surface structure are substantially immovable relative to each other in sections of the contact region extending in the transverse direction of the conveyor belt, whereas the support structure and the polymeric surface structure are in the longitudinal direction of the conveyor belt extending portions of the contact region are movable relative to each other.

Vorzugsweise ist im Kontaktbereich zwischen der Trägerstruktur und der polymeren Flächenstruktur zumindest abschnittweise eine Trennlage angeordnet, wobei die Trennlage insbesondere ein Material umfasst, durch welches der Reibungswiderstand im Kontaktbereich zwischen der Trägerstruktur und der polymeren Flächenstruktur herabgesetzt wird. Durch den Reibungswiderstand kann die Biegesteifigkeit des Transportbands gezielt eingestellt werden.Preferably, in the contact region between the support structure and the polymeric surface structure, a separation layer is arranged at least in sections, wherein the separation layer comprises in particular a material by which the frictional resistance in the contact region between the support structure and the polymeric surface structure is reduced. Due to the frictional resistance, the bending stiffness of the conveyor belt can be adjusted specifically.

Alternativ könnte auch zumindest die Oberfläche der Trägerstruktur und / oder zumindest die Oberfläche der polymeren Flächenstruktur zumindest abschnittweise im Kontaktbereich derart behandelt oder ausgestaltet sein, dass der Reibungswiderstand im Kontaktbereich zwischen der Trägerstruktur und der polymeren Flächenstruktur herabgesetzt wird. Eine Möglichkeit zur Verringerung des Reibungswiderstandes besteht bspw. darin, dass die Materialien der polymeren Flächenstruktur und der Verstärkungsstruktur im Kontaktbereich eine zueinander unterschiedliche Oberflächenenergie haben.Alternatively, at least the surface of the support structure and / or at least the surface of the polymeric surface structure could be treated or configured at least in sections in the contact region such that the frictional resistance in the contact region between the support structure and the polymeric surface structure is reduced. One possibility for reducing the frictional resistance is, for example, that the materials of the polymeric surface structure and the reinforcing structure in the contact region have a mutually different surface energy.

Des weiteren ist es bspw. denkbar die Trägerstruktur bspw. mit sog. Schlichte / Spinnpräparation behandelt werden. Unter Schlichte / Spinnpräparation sind chemische Ausrüstungen von textilen Rohstoffen (zB Fasern) oder Halbzeugen/Fertigprodukten (zB Fäden, Gewebe, Gelege) zu verstehen, die auf diese aufgebracht werden, um deren Eigenschaften gezielt einzustellen.Furthermore, it is conceivable, for example, to treat the support structure, for example, with so-called sizing / spin finish. Under sizing / spin finish chemical equipment of textile raw materials (eg fibers) or semi-finished / finished products (eg threads, fabrics, scrims) are understood to be applied to these, to adjust their properties targeted.

Nach einer konkreten Ausgestaltung der Erfindung sind die oder zumindest einige der Fäden der Trägerstruktur zumindest abschnittweise mit der Trennlage ummantelt, wobei das die Trennlage bildende Material allein oder in Kombination bspw. Wachs, Stärke, Öl, Silikon umfassen kann.According to a specific embodiment of the invention, the or at least some of the threads of the support structure are at least partially encased with the release liner, wherein the separating layer forming material alone or in combination, for example. Wax, starch, oil, silicone may include.

Die Trennlage kann aber auch durch ein Material gebildet werden, welches flexibler als die polymere Flächenstruktur und die Trägerstruktur ist und mit der Flächenstruktur und der Trägerstruktur fest, d.h. bspw. adhäsiv, verbunden ist.However, the release liner may also be formed by a material which is more flexible than the polymeric sheet structure and the support structure and solid with the sheet structure and support structure, i. for example, adhesive, is connected.

Eine weitere vorteilhafte Ausgestaltung der Erfindung sieht vor, dass die polymere Flächenstruktur die Trägerstruktur vollständig ummantelt. Ist bspw. die als Gewebe ausgebildete Trägerstruktur im gesamten Kontaktbereich mit der polymeren Flächenstruktur relativ zu dieser beweglich und ummantelt die polymere Flächenstruktur das Gewebe vollständig, so ist das beidseitig der Trägerstruktur angeordnete Polymermaterial über das Polymermaterial miteinander verbunden, welches die Maschen des Gewebes durchsetzt.A further advantageous embodiment of the invention provides that the polymeric surface structure completely encases the support structure. If, for example, the carrier structure in the form of a woven fabric is movable relative to the entire area of contact with the polymeric surface structure and the polymeric surface structure completely surrounds the fabric, then the polymer material arranged on both sides of the support structure is connected to one another via the polymer material which passes through the mesh of the fabric.

Das erfindungsgemäße Transportband umfasst vorzugsweise eine mit der Materialbahn in Kontakt bringbare Seite, welche durch eine erste Oberfläche der polymeren Flächenstruktur gebildet wird.The conveyor belt according to the invention preferably comprises a side which can be brought into contact with the material web and which is formed by a first surface of the polymeric surface structure.

Nach einer weiteren Ausgestaltung der Erfindung ist vorgesehen, dass eine der ersten Oberfläche gegenüberliegend angeordnete zweite Oberfläche der polymeren Flächenstruktur die Seite des Transportbandes bildet, welche mit der Maschine in Kontakt bringbar ist.According to a further embodiment of the invention it is provided that one of the first surface opposite arranged second surface of the polymeric surface structure forms the side of the conveyor belt, which can be brought into contact with the machine.

Eine weitere Ausführungsform der Erfindung sieht vor, dass das Transportband für Fluid undurchlässig ist.Another embodiment of the invention provides that the conveyor belt is impermeable to fluid.

Des weiteren kann die erste Oberfläche hydrophil oder hydrophob sein. Es ist aber auch möglich, dass die erste Oberfläche hydrophile und hydrophobe abschnitte umfasst. Darüber hinaus kann die erste Oberfläche glatt oder strukturiert sein. So kann die erste Oberfläche bspw. eine Rauhigkeit im Bereich von RZ=2 bis 80 µm nach ISO 4287, Teil I haben.Furthermore, the first surface may be hydrophilic or hydrophobic. However, it is also possible that the first surface comprises hydrophilic and hydrophobic sections. In addition, the first surface may be smooth or textured. For example, the first surface may have a roughness in the range of RZ = 2 to 80 μm according to ISO 4287, Part I.

Des weitern kann die polymere Flächenstruktur im Bereich der ersten Oberfläche ein Kunststoffmaterial mit einer Härte im Bereich von Shore A 40 bis 100 Shore A umfassen, wobei bspw. in das Kunststoffmaterial Füllstoffe eingebettet sind. Eine mögliche Ausgestaltung der ersten Oberfläche wird bspw. in der EP 0 576 115 B1 beschrieben, die diesbezüglich vollumfänglich in den Offenbahrungsgehalt dieser Anmeldung aufgenommen wird.Furthermore, the polymeric surface structure in the region of the first surface may comprise a plastic material having a hardness in the range of Shore A 40 to 100 Shore A, wherein, for example, fillers are embedded in the plastic material. A possible embodiment of the first surface is, for example, in the EP 0 576 115 B1 described in this regard is fully incorporated in the Offenbahrungsgehalt this application.

Die Erfindung soll im weiteren anhand der nachfolgenden schematischen Zeichnungen näher erläutert werden. Es zeigen:

Fig. 1
eine Ausführungsform eines erfindungsgemäßen Transportbandes im Schnitt in CD-Richtung,
Fig. 2
das Transportband der Figur 1 im Schnitt in MD-Richtung in ungebogenen und gebogenen Zustand.
The invention will be explained in more detail below with reference to the following schematic drawings. Show it:
Fig. 1
an embodiment of a conveyor belt according to the invention in section in the CD direction,
Fig. 2
the conveyor belt of Figure 1 in section in MD direction in unbent and bent state.

Die Figur 1 zeigt eine Ausführungsform eines erfindungsgemäßen Transportbandes 1 mit einer durch eine Fadenanordnung aus einer Anzahl zueinander parallelen Fäden 2 gebildeten Last aufnehmenden Trägerstruktur 3, die in eine polymere Flächenstruktur 4 vollständig eingebettet ist.FIG. 1 shows an embodiment of a conveyor belt 1 according to the invention with a load-bearing support structure 3 formed by a thread arrangement consisting of a number of mutually parallel threads 2, which is completely embedded in a polymeric surface structure 4.

Die polymere Flächenstruktur 4 weist hierbei eine erste Oberfläche 7 auf, welche die Seite des Transportbandes 1 bildet, die mit einer Materialbahn in Kontakt bringbar ist.The polymeric surface structure 4 in this case has a first surface 7, which forms the side of the conveyor belt 1, which can be brought into contact with a material web.

Des weiteren weist die polymere Flächenstruktur 4 eine der ersten Oberfläche 7 gegenüberliegend angeordnete zweite Oberfläche 8 auf, welche die Seite des Transportbandes 1 bildet, die mit der Maschine in Kontakt bringbar ist.Furthermore, the polymeric surface structure 4 has a second surface 8 arranged opposite the first surface 7, which forms the side of the conveyor belt 1 which can be brought into contact with the machine.

Darüber hinaus ist die polymere Flächenstruktur 4 für Fluid undurchlässig, so dass auch das Transportband 1 für Fluid undurchlässig ist.In addition, the polymeric surface structure 4 is impermeable to fluid, so that the conveyor belt 1 is impermeable to fluid.

Die Darstellung der Figur 1 zeigt einen Schnitt senkrecht zur Längserstreckung der Fäden 2, wobei sich die Fäden 2 in die vorgesehene Maschinenrichtung (MD-Richtung) des Transportbandes 1 erstrecken.The representation of Figure 1 shows a section perpendicular to the longitudinal extent of the threads 2, wherein the threads 2 in the intended machine direction (MD direction) of the conveyor belt 1 extend.

Die Fäden 2 und die die Fäden 2 ummantelnde polymere Flächenstruktur 4 bilden einen Kontaktbereich 5 aus. Erfindungsgemäß lässt sich die Trägerstruktur 3 relativ zur polymeren Flächenstruktur 4 im Kontaktbereich 5 bewegen, wie insbesondere aus der Darstellung der Figur 2 ersichtlich ist, die einen Schnitt durch das Transportband 1 in MD-Richtung in ungebogenen (Figur 2a) und gebogenen Zustand (Figur 2b) zeigt.The threads 2 and the threads 2 enveloping polymeric surface structure 4 form a contact region 5 from. According to the invention, the carrier structure 3 can be moved relative to the polymeric surface structure 4 in the contact region 5, as can be seen in particular from the representation of FIG. 2, which shows a section through the conveyor belt 1 in MD direction in unbent (FIG. 2a) and bent state (FIG. 2b) ) shows.

Bei dem in der Figur 2b dargestellten gebogenen Zustand des Transportbandes 1 ist der in der Figur 2b unterhalb der Trägerstruktur 3 liegende Abschnitt der Flächenstruktur 4 gestaucht und der in der Figur 2b über der Trägerstruktur 3 liegende Anteil der Flächenstruktur 4 gestreckt. Dadurch, dass die Fäden 2 auf dem sich jeweils über die Mantelfläche der Fäden 2 erstreckenden Kontaktbereich 5 relativ zu der polymeren Flächenstruktur 4 verschiebbar sind, können die Fäden 2 relativ zur Flächenstruktur 4 gleiten, wodurch eine Verspannung, die bei inniger und fester Verbindung zwischen Fäden 2 und Flächenstruktur 4 entstehen würde, verhindert wird. Hierdurch wird die Biegesteifigkeit des Transportbandes 1 reduziert.In the bent state of the conveyor belt 1 shown in FIG. 2b, the section of the surface structure 4 below the support structure 3 in FIG. 2b is compressed and the portion of the surface structure 4 lying above the support structure 3 in FIG. 2b is stretched. Due to the fact that the threads 2 are displaceable relative to the polymeric surface structure 4 on the contact region 5 extending over the lateral surface of the threads 2, the threads 2 can slide relative to the surface structure 4, which results in a tension which, given intimate and firm connection between threads 2 and surface structure 4 would arise is prevented. As a result, the flexural rigidity of the conveyor belt 1 is reduced.

Bei der dargestellten Ausführungsform wird die relative Beweglichkeit zwischen Trägerstruktur 3 und polymerer Flächenstruktur 4 im Kontaktbereich 5 dadurch erreicht, indem im Kontaktbereich 5 zwischen der Trägerstruktur 3 und der polymeren Flächenstruktur 4 eine Trennlage 6 angeordnet ist, welche ein Material umfasst, durch welches der Reibungswiderstand im Kontaktbereich 5 zwischen der Trägerstruktur 3 und der polymeren Flächenstruktur 4 herabgesetzt wird.In the illustrated embodiment, the relative mobility between the support structure 3 and the polymeric surface structure 4 in the contact region 5 is achieved by a separating layer 6 is arranged in the contact region 5 between the support structure 3 and the polymeric surface structure 4, which comprises a material through which the frictional resistance in Contact area 5 between the support structure 3 and the polymeric surface structure 4 is reduced.

Zu bemerken ist hierbei, dass die Trägerstruktur 3 die polymere Flächenstruktur 4 demzufolge mittelbar und zwar durch die Trennlage 6 vermittelt kontaktiert.It should be noted here that the support structure 3, the polymeric surface structure 4 mediated accordingly mediated by the release layer 6.

Die Trennlage 6 ummantelt hierbei die Fäden 2 entlang deren Längserstreckung jeweils vollständig, wobei die Trennlage 6 durch Silikonöl gebildet wird.The separating layer 6 in this case completely envelopes the filaments 2 along their longitudinal extent, the separating layer 6 being formed by silicone oil.

Claims (12)

Transportband für eine bahnverarbeitende Maschine, insbesondere Papier-, Karton- oder Tissuemaschine, mit einer Last aufnehmenden Trägerstruktur, welche zumindest abschnittweise von einer polymeren Flächenstruktur ummantelt wird, wodurch sich die polymere Flächenstruktur und die Trägerstruktur abschnittweise mittelbar oder unmittelbar kontaktieren,
dadurch gekennzeichnet,
dass der Kontaktbereich zwischen der Trägerstruktur und der polymeren Flächenstruktur Abschnitte umfasst, in denen sich die Trägerstruktur relativ zur polymeren Flächenstruktur bewegen kann.Conveyor belt for a web-processing machine, in particular paper, board or tissue machine, with a load-bearing support structure which is at least partially covered by a polymeric surface structure, whereby the polymeric surface structure and the support structure contact sections directly or indirectly,
characterized,
in that the contact area between the carrier structure and the polymeric area structure comprises sections in which the carrier structure can move relative to the polymeric area structure. Transportband nach Anspruch 1,
dadurch gekennzeichnet,
dass die Trägerstruktur in den Abschnitten in denen sich die Trägerstruktur relativ zur polymeren Flächenstruktur bewegen kann, mit der polymeren Flächenstruktur keine adhäsive Verbindung eingeht.Conveyor belt according to claim 1,
characterized,
that the support structure in the sections in which the support structure can move relative to the polymeric surface structure, with the polymeric surface structure does not adhere adhesive. Transportband nach Anspruch 1 oder 2,
dadurch gekennzeichnet,
dass die Trägerstruktur allein oder in Kombination umfasst: ein Gewebe, ein Fadengelege, ein Fadengewirk. Conveyor belt according to claim 1 or 2,
characterized,
that the support structure comprises alone or in combination: a fabric, a scrim, a Fadengewirk. Transportband nach einem der Ansprüche 1 bis 3,
dadurch gekennzeichnet,
dass im Kontaktbereich zwischen der Trägerstruktur und der polymeren Flächenstruktur zumindest abschnittweise eine Trennlage angeordnet ist.Conveyor belt according to one of claims 1 to 3,
characterized,
that the contact area between the support structure and the polymeric surface structure at least in sections a separating layer is arranged. Transportband nach Anspruch 4,
dadurch gekennzeichnet,
dass Fäden der Trägerstruktur zumindest abschnittweise mit der Trennlage ummantelt sind.Conveyor belt according to claim 4,
characterized,
that threads of the support structure are at least partially encased with the release liner. Transportband nach Anspruch 4 oder 5,
dadurch gekennzeichnet,
dass die Trennlage ein Material umfasst, durch welches der Reibungswiderstand im Kontaktbereich zwischen der Trägerstruktur und der polymeren Flächenstruktur herabgesetzt wird.Conveyor belt according to claim 4 or 5,
characterized,
in that the separating layer comprises a material which reduces the frictional resistance in the contact region between the carrier structure and the polymeric surface structure. Transportband nach Anspruch 6,
dadurch gekennzeichnet,
dass die Trennlage allein oder in Kombination umfasst: Wachs, Stärke, Öl, Silikon. Conveyor belt according to claim 6,
characterized,
that the release liner comprises alone or in combination: Wax, starch, oil, silicone. Transportband nach einem der Ansprüche 1 bis 7,
dadurch gekennzeichnet,
dass die polymere Flächenstruktur die Trägerstruktur vollständig ummantelt.Conveyor belt according to one of claims 1 to 7,
characterized,
that the polymeric surface structure completely encases the support structure. Transportband nach einem der Ansprüche 1 bis 8,
dadurch gekennzeichnet,
dass eine erste Oberfläche der polymeren Flächenstruktur die Seite des Transportbandes bildet, welche mit der Materialbahn in Kontakt bringbar ist.Conveyor belt according to one of claims 1 to 8,
characterized,
that a first surface of the polymeric sheet structure forms the side of the conveyor belt, which is engageable with the web of material in contact. Transportband nach Anspruch 9,
dadurch gekennzeichnet,
dass eine der ersten Oberfläche gegenüberliegend angeordnete zweite Oberfläche der polymeren Flächenstruktur die Seite des Transportbandes bildet, welche mit der Maschine in Kontakt bringbar ist.Conveyor belt according to claim 9,
characterized,
in that a second surface of the polymeric surface structure arranged opposite the first surface forms the side of the conveyor belt which can be brought into contact with the machine. Transportband nach einem der Ansprüche 1 bis 10,
dadurch gekennzeichnet,
dass die Trägerstruktur und die polymere Flächenstruktur in sich in Querrichtung des Transportbandes erstreckenden Abschnitten des Kontaktbereichs im wesentlichen relativ zueinander unbewegbar sind, wohingegen die Trägerstruktur und die polymere Flächenstruktur in sich in Längsrichtung des Transportbandes erstreckenden Abschnitten des Kontaktbereichs relativ zueinander bewegbar sind.Conveyor belt according to one of claims 1 to 10,
characterized,
in that the support structure and the polymeric surface structure are immovable relative to one another in sections of the contact region extending in the transverse direction of the conveyor belt, whereas the support structure and the polymeric surface structure are movable relative to one another in sections of the contact region extending in the longitudinal direction of the conveyor belt. Transportband nach einem der Ansprüche 1 bis 11,
dadurch gekennzeichnet,
dass das Transportband für Fluid undurchlässig ist.Conveyor belt according to one of claims 1 to 11,
characterized,
that the conveyor belt is impermeable to fluid.
EP20060122504 2005-12-17 2006-10-18 Transport belt Withdrawn EP1798339A1 (en)

Applications Claiming Priority (1)

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DE200510060525 DE102005060525A1 (en) 2005-12-17 2005-12-17 conveyor belt

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US (1) US20070137770A1 (en)
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Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2147632A (en) * 1983-10-03 1985-05-15 Tamfelt Oy Ab Wet pressing
EP0859082A2 (en) 1997-02-17 1998-08-19 Voith Sulzer Papiermaschinen GmbH Press belt, in particular a pressing shell
US20050003724A1 (en) 2003-07-02 2005-01-06 Fitzpatrick Keith Substrate for endless belt for use in papermaking applications
EP1561860A1 (en) 2004-02-03 2005-08-10 Tamfelt Oyj Abp Press belt

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1925917A (en) * 1932-06-07 1933-09-05 Otto T Chalon Paper press belt
DE59900740D1 (en) * 1999-03-12 2002-02-28 Heimbach Gmbh Thomas Josef Drainage belt for paper machines
EP1541754B1 (en) * 2003-08-21 2005-12-07 Heimbach GmbH & Co. Support to be used as or for a papermaking belt
JP4463051B2 (en) * 2003-12-24 2010-05-12 ヤマウチ株式会社 Manufacturing method of press belt

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2147632A (en) * 1983-10-03 1985-05-15 Tamfelt Oy Ab Wet pressing
EP0859082A2 (en) 1997-02-17 1998-08-19 Voith Sulzer Papiermaschinen GmbH Press belt, in particular a pressing shell
US20050003724A1 (en) 2003-07-02 2005-01-06 Fitzpatrick Keith Substrate for endless belt for use in papermaking applications
EP1561860A1 (en) 2004-02-03 2005-08-10 Tamfelt Oyj Abp Press belt

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DE102005060525A1 (en) 2007-06-21

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