EP0893523B1 - Grid fabric - Google Patents

Grid fabric Download PDF

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Publication number
EP0893523B1
EP0893523B1 EP98112123A EP98112123A EP0893523B1 EP 0893523 B1 EP0893523 B1 EP 0893523B1 EP 98112123 A EP98112123 A EP 98112123A EP 98112123 A EP98112123 A EP 98112123A EP 0893523 B1 EP0893523 B1 EP 0893523B1
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European Patent Office
Prior art keywords
threads
weft
fabric
standing
grid
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EP98112123A
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German (de)
French (fr)
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EP0893523A1 (en
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Niels Wendland
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    • DTEXTILES; PAPER
    • D03WEAVING
    • D03DWOVEN FABRICS; METHODS OF WEAVING; LOOMS
    • D03D13/00Woven fabrics characterised by the special disposition of the warp or weft threads, e.g. with curved weft threads, with discontinuous warp threads, with diagonal warp or weft
    • D03D13/006With additional leno yarn
    • 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
    • D03D15/20Woven fabrics characterised by the material, structure or properties of the fibres, filaments, yarns, threads or other warp or weft elements used characterised by the material of the fibres or filaments constituting the yarns or threads
    • D03D15/283Woven fabrics characterised by the material, structure or properties of the fibres, filaments, yarns, threads or other warp or weft elements used characterised by the material of the fibres or filaments constituting the yarns or threads synthetic polymer-based, e.g. polyamide or polyester fibres
    • 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
    • D03D15/20Woven fabrics characterised by the material, structure or properties of the fibres, filaments, yarns, threads or other warp or weft elements used characterised by the material of the fibres or filaments constituting the yarns or threads
    • D03D15/242Woven fabrics characterised by the material, structure or properties of the fibres, filaments, yarns, threads or other warp or weft elements used characterised by the material of the fibres or filaments constituting the yarns or threads inorganic, e.g. basalt
    • D03D15/267Glass
    • DTEXTILES; PAPER
    • D03WEAVING
    • D03DWOVEN FABRICS; METHODS OF WEAVING; LOOMS
    • D03D19/00Gauze or leno-woven fabrics
    • DTEXTILES; PAPER
    • D03WEAVING
    • D03DWOVEN FABRICS; METHODS OF WEAVING; LOOMS
    • D03D9/00Open-work fabrics
    • DTEXTILES; PAPER
    • D10INDEXING SCHEME ASSOCIATED WITH SUBLASSES OF SECTION D, RELATING TO TEXTILES
    • D10BINDEXING SCHEME ASSOCIATED WITH SUBLASSES OF SECTION D, RELATING TO TEXTILES
    • D10B2101/00Inorganic fibres
    • D10B2101/02Inorganic fibres based on oxides or oxide ceramics, e.g. silicates
    • D10B2101/06Glass
    • DTEXTILES; PAPER
    • D10INDEXING SCHEME ASSOCIATED WITH SUBLASSES OF SECTION D, RELATING TO TEXTILES
    • D10BINDEXING SCHEME ASSOCIATED WITH SUBLASSES OF SECTION D, RELATING TO TEXTILES
    • D10B2321/00Fibres made from polymers obtained by reactions only involving carbon-to-carbon unsaturated bonds
    • D10B2321/10Fibres made from polymers obtained by reactions only involving carbon-to-carbon unsaturated bonds polymers of unsaturated nitriles, e.g. polyacrylonitrile, polyvinylidene cyanide
    • DTEXTILES; PAPER
    • D10INDEXING SCHEME ASSOCIATED WITH SUBLASSES OF SECTION D, RELATING TO TEXTILES
    • D10BINDEXING SCHEME ASSOCIATED WITH SUBLASSES OF SECTION D, RELATING TO TEXTILES
    • D10B2331/00Fibres made from polymers obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds, e.g. polycondensation products
    • D10B2331/02Fibres made from polymers obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds, e.g. polycondensation products polyamides
    • DTEXTILES; PAPER
    • D10INDEXING SCHEME ASSOCIATED WITH SUBLASSES OF SECTION D, RELATING TO TEXTILES
    • D10BINDEXING SCHEME ASSOCIATED WITH SUBLASSES OF SECTION D, RELATING TO TEXTILES
    • D10B2331/00Fibres made from polymers obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds, e.g. polycondensation products
    • D10B2331/04Fibres made from polymers obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds, e.g. polycondensation products polyesters, e.g. polyethylene terephthalate [PET]
    • DTEXTILES; PAPER
    • D10INDEXING SCHEME ASSOCIATED WITH SUBLASSES OF SECTION D, RELATING TO TEXTILES
    • D10BINDEXING SCHEME ASSOCIATED WITH SUBLASSES OF SECTION D, RELATING TO TEXTILES
    • D10B2505/00Industrial
    • D10B2505/02Reinforcing materials; Prepregs

Definitions

  • Lattice fabrics are woven fabrics consisting of a stand (or also Warp) and a weft system, where basically three types of mesh fabric distinguishes: “full-turn” (or “full turn”), "cross-turn” and "half-turn”
  • Full spiners are so named because they are wrapped around the upright and weft threads
  • Leno thread is used which makes a full turn around the upright thread, before a shot is fired. Before the next shot, the leno thread is made another full turn in the opposite direction. Because in use conventional weaving machines for this technology, rational production is not possible full-turn is rarely the case.
  • Phillips have one type of binding, two for each group Leno threads are crossed over one or more upright threads.
  • the binding achieved in this way is mainly thanks to its special sliding resistance used for tying cut edges. With usual weaving machines with normal leno harnesses this binding is very easy complicated, which is why special cutting strips are usually used.
  • Half-turn also become "English lathe” or “Polish Dreher ".
  • This type includes lattice fabrics, which for example only have an upright and a turner per group.
  • a leno fabric according to the state of the art can be seen in FIG. 2: This is a Turner fabric with one upright thread and one leno thread per group. This is the most common type of tissue in practice. Just this composition makes it possible to use the economically efficient high / low shifter technology.
  • a leno weave is also described in GB 1 082 684 A.
  • the invention relates to the latter group.
  • Half-spin fabric produced inexpensively in known weaving machines (more information the company brochure "Hoch / Tiefachach-Drehertechnik” is available for this purpose E. Fröhlich AG, CH-8874 Mühlehorn). They come because of their favorable weight-strength ratio also for high-speed abrasive tools as a carrier material for use.
  • the structure of the mesh has different elongations at break in the fabric different directions. Comes in the direction of the extension of the weft threads their elongation behavior to the effect, perpendicular to this is the elongation behavior of upright and leno threads. Now such a tissue is rotating offset, it does not expand evenly in both due to the flow forces Directions.
  • the invention has for its object a lattice fabric of the known type, for use as a carrier material in abrasive tools, to improve such that the strength and the elongation behavior in the direction of Weft threads and in the direction of the upright threads are essentially the same, and so there are no restrictions on use with fast rotating Abrasive tools must be made when using the mesh. Furthermore should Ensure that the upright threads are only used in the manufacture of the mesh are subjected to less stress, which the strength values of the threads affect. The aim is also to improve the improved mesh to manufacture using less material, so that it is inexpensive.
  • the solution to the problem by the invention is characterized in that only in the mesh fabric used the weft threads (1) and the upright threads (2) have essentially the same material properties and strength values, especially tensile strength, elongation behavior and bending stiffness, and the leno threads (3) as auxiliary warp threads in Contrary to the weft or upright threads (1, 2) made of a stretchable fiber exist much lower titer. It is preferably provided that the weft threads (1) and upright threads (2) run essentially straight and the Leno threads (3) intertwine around weft and upright threads (1, 2).
  • weft threads and Upright threads are arranged at right angles to each other and largely remain just. This also ensures that the upright threads at Processing will not be damaged because they are not significantly bent have to. Rather, only a comparatively thin leno thread loops as Auxiliary warp thread around upright and weft thread: The leno thread is bent, while the main thread and the weft thread remain largely straight; the for The stretching leno thread alone creates the necessary turn applied.
  • the titer (ie the ratio of weight per length) is advantageously of Weft thread (1) and upright thread (2) largely the same; the titer of the leno thread (3) is preferably at most 25% of that of the weft or stand thread (1, 2), or even a maximum of 15% of it.
  • weft and upright threads (1, 2) are made of a glass fiber consist.
  • the leno threads (3) preferably consist of a conventional one Fabric fiber, in particular from a smooth fiber made of plastic.
  • As material for the leno threads (3) are preferably polyester, polyamide or Dralon®.
  • the weft and upright threads (1, 2) can have a titer of 34 to 9,600 tex, preferably 68 to 1,200 tex.
  • the leno threads (3) have preferred a titer of 20 to 200 dtex.
  • the spacing between the wefts (1) or the upright threads (2) is advantageously from 2 x 2 to 14 x 14 mm.
  • the fabric grid according to the invention is used as a carrier material in Abrasive tools used. It is primarily on grinding, cutting or Grinding discs thought.
  • mesh grids can also be used in construction, and both as reinforcing mesh or as joint cover strips.
  • the known lattice fabric shown in FIG. 2 consists of three types of thread: A row of weft threads 1 are arranged parallel to one another at the desired lattice spacing. A series of upright threads 2, which are likewise arranged parallel to one another at the desired grid spacing, run perpendicular to these. Furthermore, the fabric has a number of leno threads 3. These leno threads are intertwined with the upright threads 2 around the weft threads 1, so that a so-called leno fabric is obtained.
  • the weft threads 1 arranged parallel to one another and the upright threads 2 arranged perpendicular to one another and parallel to one another do not cross, but rather are arranged one above the other; in the figure, the upright threads 2 are always below the weft threads 1.
  • the fabric shown is produced in a known manner in a weaving machine which uses the high / low shed turning technique.
  • the fabric shown is therefore a half-turn fabric (or leno fabric) that has only one upright 2 and one leno 3 per group.
  • upright threads 2 and leno threads 3 wind together around one another and around the weft threads 1, so that the desired bond is produced. Since essentially identical pillars 2 and turner 3 are always used, it follows that both pillars 2 and turner 3 are bent after the weaving process. This may affect the strength of the two fiber groups, since the bend cannot rule out the possibility of fiber injury.
  • the fabric of the invention - shown in Fig. 1 - differs from this prior art in that the wefts 1 and Upright threads 2 have essentially the same material properties and strength values have: As can be seen, the dimensions (diameter) of the threads 1 and 2 substantially the same size, d. H. the titers are the same or similar. Still is to see that the leno threads 3 compared to the weft or upright threads 1, 2 a much smaller diameter, ie a much lower titer and thus also have a significantly lower tensile strength and bending stiffness. Thus the leno threads nestle - as can be seen in Fig. 1 - around the Upright threads 2 and the weft threads 1 around without the upright threads 2 one significant bend are exposed. Rather, the upright threads 2 remain straight - The weft threads 1 are there anyway.
  • fibers 3 are preferably used as leno threads that are less than have a quarter of the titer of the upright or weft threads 1, 2 (in the exemplary embodiment if it is only about a tenth of the titer of threads 1 or 2), the strength drops of the leno thread 3 is not important for the fabric: the strength becomes alone determined by that of the weft and stand threads 1, 2. Because this is essentially is the same, there is an equal total strength of the fabric both in Direction of the weft threads 1 as well as in the direction of the upright threads 2. Incoming such a fabric is used as a carrier material for a rotating grinding tool, there are no different strains in the two mentioned Directions so that the grinding wheel runs better and a higher burst speed Has.
  • the mesh fabric according to the invention is produced in a manner known per se Wise.
  • Well-known weaving machines are used (e.g. rapier weaving machines from the Dornier company) and well-known high / low shifter turning systems (e.g. from the Grob), where two warp beams are used: one warp beam the upright thread is guided, in the other the leno thread. Both threads are processed with essentially the same thread tension. Due to the This results in different strength values of the standard thread and leno thread Fabric sketched in Fig. 1: The upright threads 2 become essentially straight arranged, while the leno threads 3 around the upright threads 2 and Arrange weft threads 1.

Abstract

The woven grid fabric has only the wefts (1) and standing filaments (2) of the same material characteristics and strength and especially tensile strength and bending strength. The leno filaments (3), as auxiliary warps, are made of stretch fibres and are thinner, compared to the weft and standing (1,2) filaments.

Description

Die Erfindung betrifft eine Verwendung eines Gittergewebes, bestehend

  • aus einer Anzahl von Schußfäden, die in gewünschtem Gitterabstand parallel zueinander angeordnet sind,
  • aus einer Anzahl von zu den Schußfäden senkrecht verlaufenden Steherfäden, die ebenfalls in gewünschtem Gitterabstand parallel zueinander angeordnet sind, und
  • aus einer Anzahl von Dreherfäden, die Schußfäden und Steherfäden nach Art eines Drehergewebes verschlingen,
wobei die parallel zueinander angeordneten Schußfäden und die dazu senkrecht, parallel zueinander angeordneten Steherfäden aus einer dehnungsarmen Faser bestehen und sich nicht verkreuzen.The invention relates to the use of a grid fabric, consisting of
  • a number of weft threads which are arranged parallel to one another at the desired grid spacing,
  • from a number of upright threads running perpendicular to the weft threads, which are likewise arranged parallel to one another at the desired grid spacing, and
  • from a number of leno threads that weft weft threads and upright threads in the manner of a leno weave,
the weft threads arranged parallel to one another and the upright threads arranged perpendicularly to one another consist of a low-stretch fiber and do not cross.

Gittergewebe sind gewebte Flächengebilde bestehend aus einem Steher- (oder auch Kett-) und einem Schuß-System, wobei man grundsätzlich drei Gittergewebetypen unterscheidet: "Volldreher" (oder "Ganzdreher"), "Kreuzdreher" und "Halbdreher".Lattice fabrics are woven fabrics consisting of a stand (or also Warp) and a weft system, where basically three types of mesh fabric distinguishes: "full-turn" (or "full turn"), "cross-turn" and "half-turn"

Volldreher sind so benannt, weil ein sich um Steher- und Schußfaden schlingender Dreherfaden verwendet wird, der eine volle Drehung um den Steherfaden macht, bevor ein Schuß eingetragen wird. Vor dem nächsten Schuß macht der Dreherfaden wieder eine volle Drehung in entgegengesetzter Richtung. Da bei der Verwendung üblicher Webmaschinen für diese Technik eine rationelle Fertigung nicht möglich ist, sind Volldreher nur noch selten.Full spiners are so named because they are wrapped around the upright and weft threads Leno thread is used which makes a full turn around the upright thread, before a shot is fired. Before the next shot, the leno thread is made another full turn in the opposite direction. Because in use conventional weaving machines for this technology, rational production is not possible full-turn is rarely the case.

Kreuzdreher weisen eine Art der Bindung auf, bei der pro Drehergruppe zwei Dreherfäden gegenseitig über einen oder mehrere Steherfäden gekreuzt werden. Die so erreichte Bindung wird dank ihrer besonderen Schiebefestigkeit hauptsächlich für das Abbinden von Schnittkanten verwendet. Bei üblichen Webmaschinen mit normalen Drehergeschirren ist die Herstellung dieser Bindung sehr kompliziert, weshalb dazu meist spezielle Schnittleistenapparate verwendet werden.Phillips have one type of binding, two for each group Leno threads are crossed over one or more upright threads. The binding achieved in this way is mainly thanks to its special sliding resistance used for tying cut edges. With usual weaving machines with normal leno harnesses this binding is very easy complicated, which is why special cutting strips are usually used.

Halbdreher (oder Drehergewebe) werden auch "englische Dreher" oder "polnische Dreher" genannt. Zu diesem Typus gehören Gittergewebe, die beispielsweise nur einen Steher und einen Dreher pro Gruppe aufweisen. Ein Drehergewebe gemäß dem Stand der Technik ist in Fig. 2 zu sehen: Es handelt sich hierbei um ein Drehergewebe mit einem Steherfaden und einem Dreherfaden pro Gruppe. Dies ist die in der Praxis am häufigsten vorkommende Gewebeart. Nur diese Komposition ermöglicht es, die wirtschaftlich effiziente Hoch-/Tieffach-Drehertechnik anzuwenden. Ein Drehergewebe ist auch in GB 1 082 684 A beschrieben.Half-turn (or leno weave) also become "English lathe" or "Polish Dreher ". This type includes lattice fabrics, which for example only have an upright and a turner per group. A leno fabric according to the state of the art can be seen in FIG. 2: This is a Turner fabric with one upright thread and one leno thread per group. This is the most common type of tissue in practice. Just this composition makes it possible to use the economically efficient high / low shifter technology. A leno weave is also described in GB 1 082 684 A.

Die Erfindung betrifft die letztgenannte Gruppe. Halbdrehergewebe können kostengünstig in bekannten Webmaschinen produziert werden (nähere Hinweise hierzu finden sich in der Firmenbroschüre "Hoch/Tieffach-Drehertechnik" der Firma E. Fröhlich AG, CH-8874 Mühlehorn). Sie kommen wegen ihres günstigen Gewichts-Festigkeits-Verhältnisses auch für schnelldrehende Abrasivwerkzeuge als Trägermaterial zum Einsatz.The invention relates to the latter group. Half-spin fabric produced inexpensively in known weaving machines (more information the company brochure "Hoch / Tiefachach-Drehertechnik" is available for this purpose E. Fröhlich AG, CH-8874 Mühlehorn). They come because of their favorable weight-strength ratio also for high-speed abrasive tools as a carrier material for use.

Insbesondere bei dieser Anwendung ergibt sich folgendes Problem: Durch den Aufbau der Gewebegitter hat das Gewebe unterschiedliche Bruchdehnungen in den verschiedenen Richtungen. In Richtung der Erstreckung der Schußfäden kommt deren Dehnungsverhalten zur Wirkung, senkrecht dazu ist das Dehnungsverhalten von Steher- und Dreherfäden maßgeblich. Wird nun ein solches Gewebe in Rotation versetzt, dehnt es sich aufgrund der Fließkräfte nicht gleichmäßig in beiden Richtungen.The following problem arises in particular in this application: The The structure of the mesh has different elongations at break in the fabric different directions. Comes in the direction of the extension of the weft threads their elongation behavior to the effect, perpendicular to this is the elongation behavior of upright and leno threads. Now such a tissue is rotating offset, it does not expand evenly in both due to the flow forces Directions.

Weiterhin ist bei hoher Belastung des Gewebes zu bedenken, daß sich zwar die Schußfäden linear erstrecken und ihre volle Festigkeit haben, daß jedoch die verwundenen Dreher- und Steherfäden bereits durch den Herstellprozeß aufgrund der gegenseitigen Verdrehung stark belastet sind (s. Anordnung von Schußfäden 1 einerseits und Steherfäden 2 und Dreherfäden 3 andererseits in Fig. 2), evtl. sogar bereits leicht beschädigt, so daß diese nicht die volle Festigkeit entfalten können.Furthermore, it should be borne in mind when the fabric is under high stress that the Weft threads extend linearly and have their full strength, but that twisted leno and upright threads due to the manufacturing process mutual twisting are heavily loaded (see arrangement of weft threads 1 on the one hand and upright threads 2 and leno threads 3 on the other hand in Fig. 2), possibly even already slightly damaged so that they cannot develop their full strength.

Der Erfindung liegt die Aufgabe zugrunde, ein Gittergewebe der vorbekannten Art, zwecks Verwendung als Trägermaterial in Abrasivwerkzeugen, derart zu verbessern, daß die Festigkeit und das Dehnungsverhalten in Richtung der Schußfäden und in Richtung der Steherfäden im wesentlichen gleich sind, und insofern keine Einschränkungen bei der Verwendung bei schnellrotierenden Abrasivwerkzeugen bei Einsatz des Gittergewebes zu machen sind. Weiterhin soll sichergestellt sein, daß die Steherfäden bei der Herstellung des Gittergewebes nur geringer Beanspruchung unterworfen sind, die die Festigkeitswerte der Fäden beeinträchtigen. Weiterhin soll angestrebt werden, das verbesserte Gittergewebe unter verringertem Materialeinsatz zu fertigen, so daß es preisgünstig ist.The invention has for its object a lattice fabric of the known type, for use as a carrier material in abrasive tools, to improve such that the strength and the elongation behavior in the direction of Weft threads and in the direction of the upright threads are essentially the same, and so there are no restrictions on use with fast rotating Abrasive tools must be made when using the mesh. Furthermore should Ensure that the upright threads are only used in the manufacture of the mesh are subjected to less stress, which the strength values of the threads affect. The aim is also to improve the improved mesh to manufacture using less material, so that it is inexpensive.

Die Aufgabe wird gemäß Anspruch 1 gelöst.The object is achieved according to claim 1.

Die Lösung der Aufgabe durch die Erfindung ist dadurch gekennzeichnet, daß in dem verwendeten Gittergewebe nur die Schußfäden (1) und die Steherfäden (2) im wesentlichen gleiche Materialeigenschaften und Festigkeitswerte, insbesondere Zugfestigkeit, Dehnungsverhalten und Biegesteifigkeit, aufweisen und die Dreherfäden (3) als Hilfskettfäden im Gegensatz zu den Schuß- bzw. Steherfäden (1, 2) aus einer dehnfähigen Faser mit wesentlich geringerem Titer bestehen. Vorzugsweise ist vorgesehen, daß die Schußfäden (1) und Steherfäden (2) im wesentlichen gerade verlaufen und die Dreherfäden (3) sich um Schuß- und Steherfäden (1, 2) verschlingen.The solution to the problem by the invention is characterized in that only in the mesh fabric used the weft threads (1) and the upright threads (2) have essentially the same material properties and strength values, especially tensile strength, elongation behavior and bending stiffness, and the leno threads (3) as auxiliary warp threads in Contrary to the weft or upright threads (1, 2) made of a stretchable fiber exist much lower titer. It is preferably provided that the weft threads (1) and upright threads (2) run essentially straight and the Leno threads (3) intertwine around weft and upright threads (1, 2).

Mit dieser Anordnung wird das erfindungsgemäße Ziel erreicht: Schußfäden und Steherfäden sind rechtwinklig zueinander angeordnet und bleiben jeweils weitgehend gerade. Auch dadurch ist sichergestellt, daß die Steherfäden bei der Verarbeitung nicht geschädigt werden, weil sie nicht nennenswert gebogen werden müssen. Vielmehr schlingt sich lediglich ein vergleichsweise dünner Dreherfaden als Hilfskettfaden um Steher- und Schußfaden: Der Dreherfaden wird dabei gebogen, während Steherfaden und Schußfaden weitgehend gerade bleiben; die zur Anschmiegung nötige Windung wird vom dehnfähigen Dreherfaden alleine aufgebracht.With this arrangement, the aim of the invention is achieved: weft threads and Upright threads are arranged at right angles to each other and largely remain just. This also ensures that the upright threads at Processing will not be damaged because they are not significantly bent have to. Rather, only a comparatively thin leno thread loops as Auxiliary warp thread around upright and weft thread: The leno thread is bent, while the main thread and the weft thread remain largely straight; the for The stretching leno thread alone creates the necessary turn applied.

Vorteilhafterweise sind die Titer (also das Verhältnis Gewicht pro Länge) von Schußfaden (1) und Steherfaden (2) weitgehend gleich; der Titer des Dreherfadens (3) beträgt vorzugsweise höchstens 25 % desjenigen des Schuß- bzw. Steherfadens (1, 2), oder gar nur höchstens 15 % davon.The titer (ie the ratio of weight per length) is advantageously of Weft thread (1) and upright thread (2) largely the same; the titer of the leno thread (3) is preferably at most 25% of that of the weft or stand thread (1, 2), or even a maximum of 15% of it.

Weiterhin ist vorgesehen, daß Schuß- und Steherfäden (1, 2) aus einer Glasfaser bestehen. Die Dreherfäden (3) bestehen indes bevorzugt aus einer konventionellen Gewebefaser, insbesondere aus einer glatten Faser aus Kunststoff. Als Material für die Dreherfäden (3) kommen bevorzugt Polyester, Polyamid oder Dralon® in Frage.It is also provided that weft and upright threads (1, 2) are made of a glass fiber consist. The leno threads (3), however, preferably consist of a conventional one Fabric fiber, in particular from a smooth fiber made of plastic. As material for the leno threads (3) are preferably polyester, polyamide or Dralon®.

Die Schuß- und Steherfäden (1, 2) können einen Titer von 34 bis 9.600 tex, vorzugsweise 68 bis 1.200 tex, haben. Indes haben die Dreherfäden (3) bevorzugt einen Titer von 20 bis 200 dtex. Der Gitterabstand zwischen den Schußfäden (1) bzw. den Steherfäden (2) beträgt vorteilhafterweise von 2 x 2 bis 14 x 14 mm. The weft and upright threads (1, 2) can have a titer of 34 to 9,600 tex, preferably 68 to 1,200 tex. The leno threads (3) have preferred a titer of 20 to 200 dtex. The spacing between the wefts (1) or the upright threads (2) is advantageously from 2 x 2 to 14 x 14 mm.

Das erfindungsgemäße Gewebegitter wird als Trägermaterial in Abrasivwerkzeugen verwendet. Dabei ist vornehmlich an Schleif-, Trenn- oder Schruppscheiben gedacht.The fabric grid according to the invention is used as a carrier material in Abrasive tools used. It is primarily on grinding, cutting or Grinding discs thought.

Weiterhin können die Gewebegitter auch im Baubereich verwendet werden, und zwar sowohl als Armierungsgewebe oder als Fugenabdeckstreifen.Furthermore, the mesh grids can also be used in construction, and both as reinforcing mesh or as joint cover strips.

In der Zeichnung ist ein erfindungsgemäßes Ausführungsbeispiel dargestellt:

Fig. 1
zeigt schematisch den Aufbau des erfindungsgemäßen Gewebegitters als Ausschnitt,
Fig. 2
stellt den entsprechenden Stand der Technik dar.
An exemplary embodiment according to the invention is shown in the drawing:
Fig. 1
schematically shows the structure of the fabric grid according to the invention as a section,
Fig. 2
represents the corresponding state of the art.

Das in Fig. 2 dargestellte bekannte Gittergewebe besteht aus drei Fadenarten: Eine Reihe Schußfäden 1 sind in gewünschtem Gitterabstand parallel zueinander angeordnet. Senkrecht zu diesen verlaufen eine Reihe von Steherfäden 2, die ebenfalls in gewünschtem Gitterabstand parallel zueinander angeordnet sind. Weiterhin weist das Gewebe eine Reihe von Dreherfäden 3 auf. Diese Dreherfäden sind zusammen mit den Steherfäden 2 um die Schußfäden 1 verschlungen, so daß sich ein sog. Drehergewebe ergibt. Dabei verkreuzen sich die parallel zueinander angeordneten Schußfäden 1 und die dazu senkrecht, parallel zueinander angeordneten Steherfäden 2 nicht, sondern sie sind jeweils übereinanderliegend angeordnet; in der Figur liegen die Steherfäden 2 stets unter den Schußfäden 1. Das dargestellte Gewebe wird in bekannter Weise in einer Webmaschine hergestellt, die die Hoch-/Tieffach-Drehertechnik anwendet. Bei dem dargestellten Gewebe handelt es sich also um ein Halbdreher-Gewebe (bzw. Drehergewebe), das nur einen Steher 2 und einen Dreher 3 pro Gruppe aufweist.
Wie aus Fig. 2 unmittelbar hervorgeht, winden sich Steherfäden 2 und Dreherfäden 3 gemeinsam umeinander und um die Schußfäden 1, so daß der gewünschte Verbund entsteht. Da stets im wesentlichen gleichartige Steher 2 und Dreher 3 verwendet werden, ergibt sich, daß sowohl Steher 2 als auch Dreher 3 nach dem Webvorgang gebogen sind. Dies beeinträchtigt u.U. die Festigkeit der beiden Fasergruppen, da durch die Biegung nicht ausgeschlossen werden kann, daß eine Faserverletzung eintritt.
The known lattice fabric shown in FIG. 2 consists of three types of thread: A row of weft threads 1 are arranged parallel to one another at the desired lattice spacing. A series of upright threads 2, which are likewise arranged parallel to one another at the desired grid spacing, run perpendicular to these. Furthermore, the fabric has a number of leno threads 3. These leno threads are intertwined with the upright threads 2 around the weft threads 1, so that a so-called leno fabric is obtained. In this case, the weft threads 1 arranged parallel to one another and the upright threads 2 arranged perpendicular to one another and parallel to one another do not cross, but rather are arranged one above the other; in the figure, the upright threads 2 are always below the weft threads 1. The fabric shown is produced in a known manner in a weaving machine which uses the high / low shed turning technique. The fabric shown is therefore a half-turn fabric (or leno fabric) that has only one upright 2 and one leno 3 per group.
As can be seen directly from FIG. 2, upright threads 2 and leno threads 3 wind together around one another and around the weft threads 1, so that the desired bond is produced. Since essentially identical pillars 2 and turner 3 are always used, it follows that both pillars 2 and turner 3 are bent after the weaving process. This may affect the strength of the two fiber groups, since the bend cannot rule out the possibility of fiber injury.

Ferner ist unmittelbar ersichtlich, daß sich die Festigkeit in Richtung der Schußfäden alleine aufgrund der Festigkeit der Schußfäden 1 ergibt, daß sich die Festigkeit senkrecht dazu - also in Richtung der Steher 2 bzw. Dreher 3 - im wesentlichen als Summe der Festigkeiten von Steherfäden 2 und Dreherfäden 3 ergibt. Im allgemeinen ist also davon auszugehen, daß das Festigkeitsverhalten - und damit auch das Dehnverhalten unter Belastung - in den beiden genannten Richtungen unterschiedlich ist, was sich insbesondere dann negativ bemerkbar macht, wenn das Gittergewebe als Trägergewebe für rotierende Schleifwerkzeuge verwendet wird: Die Dehnungen in den beiden orthogonalen Richtungen ist dann unterschiedlich, so daß ein Bersten des Werkzeugs begünstigt wird.It is also immediately apparent that the strength in the direction of the weft threads solely due to the strength of the weft threads 1 shows that the strength perpendicular to it - ie in the direction of the uprights 2 or 3 - essentially as Sum of the strengths of upright threads 2 and leno threads 3 results. In general So it can be assumed that the strength behavior - and therefore also the stretching behavior under load - different in the two directions mentioned is what is particularly noticeable when that Mesh fabric is used as a carrier fabric for rotating grinding tools: The strains in the two orthogonal directions are then different, so that the bursting of the tool is promoted.

Das erfindungsgemäße Gewebe - dargestellt in Fig. 1 - unterscheidet sich von diesem vorbekannten Stand der Technik dadurch, daß die Schußfäden 1 und die Steherfäden 2 im wesentlichen gleiche Materialeigenschaften und Festigkeitswerte aufweisen: Wie zu sehen ist, sind die Abmessungen (Durchmesser) der Fäden 1 und 2 im wesentlichen gleich groß, d. h. die Titer sind gleich oder ähnlich. Weiterhin ist zu sehen, daß die Dreherfäden 3 im Vergleich zu den Schuß- bzw. Steherfäden 1, 2 einen wesentlich kleineren Durchmesser, also einen wesentlich geringeren Titer und damit auch eine wesentliche geringere Zugfestigkeit und Biegesteifigkeit aufweisen. Damit schmiegen sich die Dreherfäden - wie in Fig. 1 zu sehen - um die Steherfäden 2 und die Schußfäden 1 herum, ohne daß die Steherfäden 2 einer nennenswerten Biegung ausgesetzt sind. Vielmehr bleiben die Steherfäden 2 gerade - die Schußfäden 1 sind es ohnehin.The fabric of the invention - shown in Fig. 1 - differs from this prior art in that the wefts 1 and Upright threads 2 have essentially the same material properties and strength values have: As can be seen, the dimensions (diameter) of the threads 1 and 2 substantially the same size, d. H. the titers are the same or similar. Still is to see that the leno threads 3 compared to the weft or upright threads 1, 2 a much smaller diameter, ie a much lower titer and thus also have a significantly lower tensile strength and bending stiffness. Thus the leno threads nestle - as can be seen in Fig. 1 - around the Upright threads 2 and the weft threads 1 around without the upright threads 2 one significant bend are exposed. Rather, the upright threads 2 remain straight - The weft threads 1 are there anyway.

Da als Dreherfäden 3 bevorzugt solche Fasern eingesetzt werden, die weniger als ein Viertel des Titers der Steher- bzw. Schußfäden 1, 2 aufweisen (im Ausführungsbeispiel ist es nur ca. ein Zehntel des Titers der Fäden 1 bzw. 2), fällt die Festigkeit des Dreherfadens 3 bei dem Gewebe nicht ins Gewicht: Die Festigkeit wird alleine durch diejenige der Schuß- und Steherfäden 1, 2 bestimmt. Da diese im wesentlichen gleich ist, ergibt sich eine gleiche Gesamtfestigkeit des Gewebes sowohl in Richtung der Schußfäden 1 als auch in Richtung der Steherfäden 2. Kommt ein solches Gewebe als Trägermaterial für ein rotierendes Schleifwerkezug zum Einsatz, ergeben sich keine unterschiedliche Dehnungen in den beiden genannten Richtungen, so daß die Schleifscheibe besser läuft und eine höhere Berstdrehzahl hat. Since fibers 3 are preferably used as leno threads that are less than have a quarter of the titer of the upright or weft threads 1, 2 (in the exemplary embodiment if it is only about a tenth of the titer of threads 1 or 2), the strength drops of the leno thread 3 is not important for the fabric: the strength becomes alone determined by that of the weft and stand threads 1, 2. Because this is essentially is the same, there is an equal total strength of the fabric both in Direction of the weft threads 1 as well as in the direction of the upright threads 2. Incoming such a fabric is used as a carrier material for a rotating grinding tool, there are no different strains in the two mentioned Directions so that the grinding wheel runs better and a higher burst speed Has.

Die Herstellung des erfindungsgemäßen Gittergewebes erfolgt in an sich bekannter Weise. Zum Einsatz kommen bekannte Webmaschinen (z.B. Greiferwebmaschinen von der Firma Dornier) und bekannte Hoch-/Tieffach-Dreher-Systeme (z.B. von der Firma Grob), wobei zwei Kettbäume eingesetzt werden: In dem einen Kettbaum wird der Steherfaden geführt, in dem anderen der Dreherfaden. Beide Fäden werden im wesentlichen mit derselben Fadenspannung verarbeitet. Aufgrund der unterschiedlichen Festigkeitswerte von Steherfaden und Dreherfaden ergibt sich das in Fig. 1 skizzierte Gewebe: Die Steherfäden 2 werden im wesentlichen gerade angeordnet, während sich die Dreherfäden 3 um die Steherfäden 2 und die Schußfäden 1 windend anordnen.The mesh fabric according to the invention is produced in a manner known per se Wise. Well-known weaving machines are used (e.g. rapier weaving machines from the Dornier company) and well-known high / low shifter turning systems (e.g. from the Grob), where two warp beams are used: one warp beam the upright thread is guided, in the other the leno thread. Both threads are processed with essentially the same thread tension. Due to the This results in different strength values of the standard thread and leno thread Fabric sketched in Fig. 1: The upright threads 2 become essentially straight arranged, while the leno threads 3 around the upright threads 2 and Arrange weft threads 1.

Da kein nennenswertes Verwinden des Steherfadens 2 beim Webvorgang zu befürchten ist und er außerdem nicht mit besonders hoher Fadenspannung verarbeitet wird, besteht nicht die Gefahr, daß dieser Faden eine mechanische Schädigung bei der Verarbeitung erfährt.Since there is no significant twisting of the upright thread 2 during the weaving process is feared and he also does not have a particularly high thread tension processed, there is no risk that this thread is a mechanical Undergoes damage during processing.

Da - im Vergleich mit dem Stand der Technik (Fig. 2) - die Materialsumme von Steherfaden 2 und Dreherfaden 3 bei der erfindungsgemäßen Lösung geringer ist, wird auch weniger Fadenmaterial verbraucht.Since - in comparison with the prior art (Fig. 2) - the material sum of Upright thread 2 and leno thread 3 is lower in the solution according to the invention, less thread material is also used.

Claims (12)

  1. A use of a grid fabric (lattice fabric) as a support material in abrasive tools, in particular in grinding, cutting, or snagging wheels, as reinforcing fabric and joint covering strips in the construction sector,
    whereby the grid fabric consists of
    a number of weft threads (1), which are arranged parallel to one another at the desired grid spacing,
    a number of standing threads (2) running perpendicular to the weft threads (1), which are likewise arranged parallel to one another at the desired grid spacing, and
    a number of turning threads (3), which loop around the weft threads (1) and standing threads (2) in the manner of a gauze fabric,
    characterised in that within the grid fabric
    the weft threads (1) arranged parallel to one another and the standing threads (2) arranged parallel to one another and perpendicular to said weft threads do not cross one another,
    only the weft threads (1) and the standing threads (2) exhibit the same material properties and strength values, in particular tensile strength, extension behaviour, and flexing resistance, and
    the weft threads (1) arranged parallel to one another and the perpendicular standing threads (2) arranged parallel to one another consist of a low-extension fibre, and the turning threads (3) consist of an extendible fibre with a substantially lower titre than the titre of the weft and standing threads (1, 2), whereby the titre of the turning threads (3) amounts to a maximum of 25 % of the titre of the weft and standing threads (1, 2).
  2. The use according to Claim 1, characterised in that the weft threads (1) and the standing threads (2) of the grid fabric run straight and the turning threads (3) loop around the weft threads and standing threads (1, 2).
  3. The use according to Claim 1 or 2, characterised in that the titres of the weft threads (1) and the standing threads (2) of the grid fabric are the same.
  4. The use according to one of Claims 1 to 3, characterised in that the titre of the turning threads (3) of the grid fabric amounts to a maximum of 15 % of the titre of the weft and standing threads (1, 2).
  5. The use according to one of Claims 1 to 4, characterised in that the weft and standing threads (1, 2) of the grid fabric consist of a glass fibre.
  6. The use according to one of Claims 1 to 5, characterised in that the turning threads (3) of the grid fabric consist of a fibre made of plastic.
  7. The use according to Claim 6, characterised in that the turning threads (3) of the grid fabric consist of polyester, polyamide, or dralon.
  8. The use according to one of Claims 1 to 7, characterised in that the grid fabric is coated with a plastic.
  9. The use according to Claim 8, characterised in that the plastic coating of the grid fabric consists of synthetic rubber, phenol resin, or epoxy resin.
  10. The use according to one of Claims 1 to 9, characterised in that the weft and standing threads (1, 2) of the grid fabric have a titre of 34 to 9,600 tex, and for preference 68 to 1,200 tex.
  11. The use according to one of Claims 1 to 10, characterised in that the turning threads (3) of the grid fabric have a titre of 20 to 200 dtex.
  12. The use according to one of Claims 1 to 11, characterised in that the grid spacing of the grid fabric between the weft threads (1) measures from 2 x 2 to 14 x 14 mm, and that the grid spacing between the standing threads measures from 2 x 2 to 14 x 14 mm.
EP98112123A 1997-07-16 1998-07-01 Grid fabric Expired - Lifetime EP0893523B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19730393 1997-07-16
DE19730393A DE19730393C2 (en) 1997-07-16 1997-07-16 Mesh fabric

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EP0893523A1 EP0893523A1 (en) 1999-01-27
EP0893523B1 true EP0893523B1 (en) 2003-11-12

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EP98112123A Expired - Lifetime EP0893523B1 (en) 1997-07-16 1998-07-01 Grid fabric

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Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102005044788B3 (en) * 2005-09-19 2006-11-02 Lindauer Dornier Gmbh Production of double-face leno fabric, e.g. for floor covering, involves a dense weave with different tensions and thickness in base and twist warp
ITTO20050193A1 (en) * 2005-03-25 2006-09-26 Roberto Bernasconi TEXTILE PRODUCTS FOR CLOTHING
DE102005022567A1 (en) * 2005-05-17 2006-11-23 Bst Safety Textiles Gmbh Woven textile fabric
DE102005043386A1 (en) * 2005-09-10 2007-03-15 Beltec Industrietechnik Gmbh Reinforcement body made of fiber-reinforced plastic

Family Cites Families (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1082684A (en) * 1963-04-19 1967-09-06 Smith & Nephew Improvements in and relating to openwork woven fabrics
DE2110331A1 (en) * 1971-03-04 1972-09-14 Burlington Industries Inc Dimensionally stable canvas
FR2214001A1 (en) * 1973-01-16 1974-08-09 Tissmetal Lionel Dupont Gauze fabric for reinforcing elastomeric material - including superimposed warp and weft layers held together by tying yarns
DE3120661C2 (en) * 1981-05-23 1986-08-07 Huesker Synthetic GmbH & Co, 4423 Gescher Mesh fabric, especially for reinforcing panels and layers
US5110656A (en) * 1989-03-15 1992-05-05 Kanebo Ltd. Impregnated leno fabric and reinforced inorganic matrix article
US5763043A (en) * 1990-07-05 1998-06-09 Bay Mills Limited Open grid fabric for reinforcing wall systems, wall segment product and methods of making same
CA2046021C (en) * 1990-07-05 2001-09-04 John Frederick Porter Reinforcement for wall systems
DE19520541C2 (en) * 1995-06-03 1999-01-14 Bwg Bergwerk Walzwerk Method and device for correcting a rolled metal strip which is bent horizontally in the strip plane, in particular a metal strip with a strip thickness of 0.5 mm to 2.0 mm
DE19530541C2 (en) * 1995-08-19 1999-05-20 Lueckenhaus Tech Textilien Gmb Mesh fabric
DE29712595U1 (en) * 1997-07-16 1997-10-16 Wendland Niels Mesh fabric

Also Published As

Publication number Publication date
ATE254197T1 (en) 2003-11-15
DE19730393C2 (en) 2001-02-08
DE19730393A1 (en) 1999-01-21
DE59810128D1 (en) 2003-12-18
EP0893523A1 (en) 1999-01-27

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