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EP1424422A1 - Structured geotextiles and process for making them - Google Patents

Structured geotextiles and process for making them Download PDF

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Publication number
EP1424422A1
EP1424422A1 EP02026437A EP02026437A EP1424422A1 EP 1424422 A1 EP1424422 A1 EP 1424422A1 EP 02026437 A EP02026437 A EP 02026437A EP 02026437 A EP02026437 A EP 02026437A EP 1424422 A1 EP1424422 A1 EP 1424422A1
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EP
European Patent Office
Prior art keywords
structured
geotextiles
nonwovens
targeted
consolidated
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Withdrawn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
EP02026437A
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German (de)
French (fr)
Inventor
Uwe Bornmann
Albert Mittermayr
Franz Hintermüller
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.)
Polyfelt GmbH
Original Assignee
Polyfelt 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 Polyfelt GmbH filed Critical Polyfelt GmbH
Priority to EP02026437A priority Critical patent/EP1424422A1/en
Publication of EP1424422A1 publication Critical patent/EP1424422A1/en
Withdrawn legal-status Critical Current

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Classifications

    • D—TEXTILES; PAPER
    • D04—BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
    • D04H—MAKING TEXTILE FABRICS, e.g. FROM FIBRES OR FILAMENTARY MATERIAL; FABRICS MADE BY SUCH PROCESSES OR APPARATUS, e.g. FELTS, NON-WOVEN FABRICS; COTTON-WOOL; WADDING ; NON-WOVEN FABRICS FROM STAPLE FIBRES, FILAMENTS OR YARNS, BONDED WITH AT LEAST ONE WEB-LIKE MATERIAL DURING THEIR CONSOLIDATION
    • D04H18/00—Needling machines
    • D04H18/04—Needling machines with water jets

Definitions

  • the invention relates to structured geotextiles and methods for their Manufactured by hydrodynamic consolidation processes.
  • Structured geotextiles are used in a variety of applications used. For example, structured geotextiles become targeted and directed drainage of water, especially surface water, for example in embankments, dikes, slopes, in road construction and the like used.
  • the object of the invention was to provide structured geotextiles, which have improved properties, particularly with regard to Water permeability in defined areas both on the geotextile level, as well as vertical to the surface of the geotextile. It was also the task of Invention defines a method and an apparatus for manufacturing such to provide structured geotextiles.
  • the invention therefore relates to structured geotextiles, thereby characterized that the defined structuring through targeted hydrodynamic consolidation process is produced.
  • Another object of the invention is a method for manufacturing structured geotextiles, characterized in that in one hydrodynamic solidification processes defined capillaries differently Diameter for the production of differently solidified areas Geotextiles can be used.
  • Methods for the hydrodynamic consolidation of nonwovens are, for example from EP-A 0 896 080, EP-A 101 064, EP-A 0 900 295, EP-A 0967 315, EP-A 0859 076, EP-A 0 841 424, EP 0 727 517 and EP-A 0 751 249 known.
  • nonwovens can be protected Way by flowing out of a nozzle bar
  • Water curtain can be solidified from water jets.
  • the intensity the solidification is essentially the diameter of the from the nozzle bar, or its holes depending on the water jet emerging. The bigger the The diameter of the water jet, the higher the matting and thus the Consolidation of the fleece.
  • Structured geotextiles can be produced in a defined manner by the arrangement of the water jet nozzles of different diameters in the nozzle bar. For example, regular sequences of water jet nozzles with a small diameter and water jet nozzles with a larger diameter can be used to produce regularly structured geotextiles. In the area in which the geotextile is consolidated by water jets with a small diameter, the consolidation is less, the geotextile remains more voluminous and loose. In those areas in which the geotextile is consolidated by water jets with a larger diameter, the geotextile is strongly consolidated, it becomes flat and firm.
  • the diameter of the water jet nozzles can be between 0.1-0.2 mm for strong flat consolidation and 0.05-0.1 for loose voluminous consolidation.
  • the diameters of the capillaries can be selected accordingly, intermediate values also being possible depending on the requirements.
  • the fleece to be consolidated can consist of staple or continuous fibers.
  • the fibers preferably consist of plastics, such as, for example Polypropylene, polyethylene, polyamide, polyester or mixtures the same.
  • nonwovens can also have bicomponent fibers or consist entirely of such fibers.
  • the nonwovens can also contain parts of natural fibers such as cellulose, hemp, sisal, coconut, kenaf and the like.
  • the fibers can each have different textures and / or Have fiber cross sections.
  • two or more unconsolidated or pre-consolidated nonwovens are placed on top of one another and then, as described, consolidated differently by the hydrodynamic consolidation process using different capillary diameters of the water jet nozzles, so that structured composite nonwovens are formed.
  • the individual fleeces can have different compositions.
  • 1 a - 3 b are examples of arrangements of water jet nozzles and solidified by the special arrangement of the water jet nozzles Fleece shown.
  • Figures 1, 2 and 3 show the arrangement of the water jet nozzles different diameter, Figures 1 a, 2a, 3a, which correspond to the Structures produced diameters, represented qualitatively.

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  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Nonwoven Fabrics (AREA)

Abstract

Structured geotextiles consist of a defined structure formed by a targeted hydrodynamic strengthening process. Water jets of varying diameter are used in the process, and two or more fleece sections are used. The fleece sections consist of fibres made of eg polypropylene, polyethylene, polyamide or polyester.

Description

Die Erfindung betrifft strukturierte Geotextilien und Verfahren zu deren Herstellung durch hydrodynamische Verfestigungsverfahren.The invention relates to structured geotextiles and methods for their Manufactured by hydrodynamic consolidation processes.

Strukturierte Geotextilien werden in einer Vielzahl von Anwendungen eingesetzt. So werden strukturierte Geotextilien beispielsweise zur gezielten und gelenkten Ableitung von Wasser, insbesondere Oberflächenwasser, beispielsweise in Böschungen, Deichen, Abhängen, im Straßenbau und dergleichen eingesetzt.Structured geotextiles are used in a variety of applications used. For example, structured geotextiles become targeted and directed drainage of water, especially surface water, for example in embankments, dikes, slopes, in road construction and the like used.

Aufgabe der Erfindung war es definiert strukturierte Geotextilien bereitzustellen, die verbesserte Eigenschaften aufweisen, insbesondere in Hinblick auf Wasserdurchlässigkeit in definierten Bereichen sowohl in der Geotextilebene, als auch vertikal zur Oberfläche des Geotextils. Ferner war es Aufgabe der Erfindung ein Verfahren und eine Vorrichtung zur Herstellung derart definiert strukturierter Geotextilien bereitzustellen.The object of the invention was to provide structured geotextiles, which have improved properties, particularly with regard to Water permeability in defined areas both on the geotextile level, as well as vertical to the surface of the geotextile. It was also the task of Invention defines a method and an apparatus for manufacturing such to provide structured geotextiles.

Gegenstand der Erfindung sind daher strukturierte Geotextilien, dadurch gekennzeichnet, dass die definierte Strukturierung durch gezielte hydrodynamische Verfestigungsverfahren hergestellt wird.The invention therefore relates to structured geotextiles, thereby characterized that the defined structuring through targeted hydrodynamic consolidation process is produced.

Ein weiterer Gegenstand der Erfindung ist ein Verfahren zur Herstellung strukturierter Geotextilien, dadurch gekennzeichnet, dass in einem hydrodynamischen Verfestigungsverfahren definiert Kapillaren unterschiedlicher Durchmesser zur Herstellung von bereichsweiseunterschiedlich verfestigten Geotextilien verwendet werden.Another object of the invention is a method for manufacturing structured geotextiles, characterized in that in one hydrodynamic solidification processes defined capillaries differently Diameter for the production of differently solidified areas Geotextiles can be used.

Verfahren zur hydrodynamischen Verfestigung von Vliesen sind beispielsweise aus der EP -A 0 896 080, EP-A 101 064, EP-A 0 900 295, EP - A 0967 315, EP-A 0859 076, EP-A 0 841 424, EP 0 727 517 und der EP - A 0 751 249 bekannt. Methods for the hydrodynamic consolidation of nonwovens are, for example from EP-A 0 896 080, EP-A 101 064, EP-A 0 900 295, EP-A 0967 315, EP-A 0859 076, EP-A 0 841 424, EP 0 727 517 and EP-A 0 751 249 known.

Durch hydrodynamische Verfestigungsverfahren können Vliese auf schonende Weise durch Durchströmen von aus einem Düsenbalken austretenden Wasservorhang aus Wasserstrahlen verfestigt werden. Insbesondere wird dadurch eine ausgesprochen gleichmäßige Verfestigung erzielt. Die Intensität der Verfestigung ist wesentlich vom Durchmesser des aus dem Düsenbalken, bzw. dessen Bohrungen austretenden Wasserstrahls abhängig. Je größer der Durchmesser des Wasserstrahls, desto höher die Verfilzung und damit die Verfestigung des Vlieses.Thanks to hydrodynamic consolidation processes, nonwovens can be protected Way by flowing out of a nozzle bar Water curtain can be solidified from water jets. In particular thereby achieving a very even consolidation. The intensity the solidification is essentially the diameter of the from the nozzle bar, or its holes depending on the water jet emerging. The bigger the The diameter of the water jet, the higher the matting and thus the Consolidation of the fleece.

Erfindungsgemäß wird nun vorgeschlagen zur Herstellung strukturierter Geotextilien durch hydrodynamische Verfestigung Wasserstrahlen unterschiedlicher Durchmesser zu verwenden.According to the invention, it is now proposed to produce structured Geotextiles through hydrodynamic consolidation of water jets to use different diameters.

Dabei können durch definierte Anordnung der Wasserstrahldüsen unterschiedlicher Durchmesser im Düsenbalken definiert strukturierte Geotextilien hergestellt werden.
So können beispielsweise durch regelmäßige Abfolgen von Wasserstrahldüsen mit kleinem Durchmesser und Wasserstrahldüsen mit größerem Durchmesser regelmäßig strukturierte Geotextilien hergestellt werden. Im jenem Bereich, in dem das Geotextil durch Wasserstrahlen mit geringem Durchmesser verfestigt wird, ist die Verfestigung geringer, das Geotextil bleibt voluminöser und locker.
In jenen Bereichen, in denen das Geotextil durch Wasserstrahlen mit größerem Durchmesser verfestigt wird, wird das Geotextil stark verfestigt, es wird flach und fest.Structured geotextiles can be produced in a defined manner by the arrangement of the water jet nozzles of different diameters in the nozzle bar.
For example, regular sequences of water jet nozzles with a small diameter and water jet nozzles with a larger diameter can be used to produce regularly structured geotextiles. In the area in which the geotextile is consolidated by water jets with a small diameter, the consolidation is less, the geotextile remains more voluminous and loose.
In those areas in which the geotextile is consolidated by water jets with a larger diameter, the geotextile is strongly consolidated, it becomes flat and firm.

Dementsprechend können durch bewusste Anordnung von Düsen unterschiedlichen Durchmessers im Düsenbalken bewusst unterschiedlich verfestigte und strukturierte Geotextilien herzustellen. Accordingly, by deliberately arranging nozzles different diameter in the nozzle bar deliberately different to produce solidified and structured geotextiles.

Der Durchmesser der Wasserstrahldüsen kann für starke flache Verfestigung zwischen 0,1 - 0,2 mm betragen, für lockere voluminöse Verfestigung 0,05 - 0,1 betragen.
Je nach dem gewünschten Verfestigungsgrad können dementsprechend die Durchmesser der Kapillaren gewählt werden, wobei auch je nach Erfordernis Zwischenwerte möglich sind.The diameter of the water jet nozzles can be between 0.1-0.2 mm for strong flat consolidation and 0.05-0.1 for loose voluminous consolidation.
Depending on the degree of solidification desired, the diameters of the capillaries can be selected accordingly, intermediate values also being possible depending on the requirements.

Das zu verfestigende Vlies kann aus Stapel- oder Endlosfasern bestehen. Vorzugsweise bestehen die Fasern aus Kunststoffen, wie beispielsweise Polypropylen, Polyethylen, Polyamid, Polyester oder aus Mischungen derselben.The fleece to be consolidated can consist of staple or continuous fibers. The fibers preferably consist of plastics, such as, for example Polypropylene, polyethylene, polyamide, polyester or mixtures the same.

Ferner können die Vliese auch Bikomponentenfasern aufweisen oder zur Gänze aus derartigen Fasern bestehen.
Die Vliese können aber auch Anteile an natürlichen Fasern wie Cellulose, Hanf, Sisal, Kokos, Kenaf und dergleichen enthalten.Furthermore, the nonwovens can also have bicomponent fibers or consist entirely of such fibers.
The nonwovens can also contain parts of natural fibers such as cellulose, hemp, sisal, coconut, kenaf and the like.

Die Fasern können jeweils unterschiedliche Texturen und/oder Faserquerschnitte aufweisen.The fibers can each have different textures and / or Have fiber cross sections.

Durch das erfindungsgemäße Verfahren können auch mehrere Vliese durch miteinander verbunden und strukturiert verfestigt werden.With the method according to the invention, several nonwovens can also pass through interconnected and solidified in a structured manner.

Dazu werden 2 oder mehrere unverfestigte oder vorfestigte Vliese übereinander abgelegt und anschließend wie beschrieben durch das hydrodynamische Verfestigungsverfahren unter Verwendung unterschiedlicher Kapillardurchmesser der Wasserstrahldüsen unterschiedlich verfestigt, sodass strukturierte Verbundvliese entstehen.
Die einzelnen Vliese können unterschiedlicher Zusammensetzung sein. For this purpose, two or more unconsolidated or pre-consolidated nonwovens are placed on top of one another and then, as described, consolidated differently by the hydrodynamic consolidation process using different capillary diameters of the water jet nozzles, so that structured composite nonwovens are formed.
The individual fleeces can have different compositions.

In den Fig. 1a - 3b sind beispielhaft Anordnungen von Wasserstrahldüsen und durch die spezielle Anordnung der Wasserstrahldüsen erzeugte verfestigte Vliese dargestellt.1 a - 3 b are examples of arrangements of water jet nozzles and solidified by the special arrangement of the water jet nozzles Fleece shown.

Die Figuren 1, 2 und 3 zeigen die Anordnung der Wasserstrahldüsen unterschiedlichen Durchmessers, die Figuren 1 a, 2a, 3a, die entsprechend den Durchmessern erzeugten Strukturen, qualitativ dargestellt.Figures 1, 2 and 3 show the arrangement of the water jet nozzles different diameter, Figures 1 a, 2a, 3a, which correspond to the Structures produced diameters, represented qualitatively.

Claims (9)

Strukturierte Geotextilien, dadurch gekennzeichnet, dass die definierte Strukturierung durch gezielte hydrodynamische Verfestigungsverfahren hergestellt wird.Structured geotextiles, characterized in that the defined structuring is produced by targeted hydrodynamic consolidation processes. Strukturierte Geotextilien nach Anspruch 1, dadurch gekennzeichnet, dass die gezielte Verfestigung durch Anwendung von Wasserstrahldüsen unterschiedlichen Durchmessers erfolgt.Structured geotextiles according to claim 1, characterized in that the targeted solidification takes place by using water jet nozzles of different diameters. Strukturierte Geotextilien nach einem der Ansprüche 1 oder 2, dadurch gekennzeichnet, dass zwei oder mehrere Vliese durch gezielte Verfestigung durch Anwendung von Wasserstrahldüsen unterschiedlichen Durchmessers verfestigt werden.Structured geotextile according to one of claims 1 or 2, characterized in that two or more nonwovens are consolidated by targeted consolidation by using water jet nozzles of different diameters. Strukturierte Geotextilien nach einem der Ansprüche 1 bis 3, dadurch gekennzeichnet, dass die strukturiert zu verfestigenden Vliese aus Fasern aus die zu verbindenden Vliese aus Kunststoffen, wie Polypropylen, Polyethylen, Polyamid, oder Polyester oder Mischungen derselben bestehen.Structured geotextiles according to any one of claims 1 to 3, characterized in that the nonwovens to be structured structured consist of fibers from the nonwovens to be joined made of plastics, such as polypropylene, polyethylene, polyamide, or polyester or mixtures thereof. Strukturierte Geotextilien nach einem der Ansprüche 1 bis 4, dadurch gekennzeichnet, dass das zu strukturiert zu verfestigende Vlies bzw. die strukturiert zu verbindenden Vliese aus Bikomponentenfasern bestehen oder diese enthalten.Structured geotextiles according to one of claims 1 to 4, characterized in that the nonwoven to be consolidated in a structured manner or the nonwovens to be connected in a structured manner consist of or contain bicomponent fibers. Verfahren nach einem der Ansprüche 1 bis 5 dadurch gekennzeichnet, dass das/die Vlies(e) zusätzlich natürliche Fasern enthalten. Method according to one of claims 1 to 5, characterized in that the fleece (s) additionally contain natural fibers. Verfahren zur Herstellung strukturierter Geotextilien, dadurch gekennzeichnet, dass in einem hydrodynamischen Verfestigungsverfahren definiert Kapillaren unterschiedlicher Durchmesser zur Herstellung von bereichsweise unterschiedlich verfestigten Geotextilien verwendet werden.Process for the production of structured geotextiles, characterized in that in a hydrodynamic consolidation process, capillaries of different diameters are used for the production of geotextiles which are consolidated differently in some areas. Verfahren nach Anspruch 7, dadurch gekennzeichnet, dass zu einer lockeren voluminösen Verfestigung eine Düsendurchmesser von 0,05 - 0,1 mm und zur festen flachen Verfestigung eine Durchmesser von 0,1 bis 0,2 gewählt wird.A method according to claim 7, characterized in that a nozzle diameter of 0.05 - 0.1 mm is selected for a loose, voluminous solidification and a diameter of 0.1 to 0.2 for the solid flat solidification. Verwendung der Geotextilien gemäß einem der Ansprüche 1 - 5 zur gezielten und gelenkten Ableitung von Wasser, insbesondere Oberflächenwasser, beispielsweise in Böschungen, Deichen, Abhängen, im Straßenbau und dergleichen.Use of the geotextiles according to one of claims 1-5 for targeted and directed drainage of water, in particular Surface water, for example in embankments, dikes, slopes, in road construction and the like.
EP02026437A 2002-11-27 2002-11-27 Structured geotextiles and process for making them Withdrawn EP1424422A1 (en)

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1748101A2 (en) * 2005-07-26 2007-01-31 Fleissner GmbH Bulky fibrous laminate and its making
DE102008060327A1 (en) * 2008-12-03 2010-06-10 Fleissner Gmbh Method and device for producing a nonwoven product

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US2752247A (en) * 1952-02-04 1956-06-26 Ray C Chandler Rice processing
US5018255A (en) * 1987-06-26 1991-05-28 Vetrotex Saint-Gobain S.A. Method and apparatus for needling of glass mat and composite product made from said mat
US5151320A (en) * 1992-02-25 1992-09-29 The Dexter Corporation Hydroentangled spunbonded composite fabric and process
US5308674A (en) * 1991-03-26 1994-05-03 E. I. Du Pont De Nemours And Company Tear-resistant stitchbonded fabric
US5630261A (en) * 1994-06-15 1997-05-20 Jps Automotive Products Corporation Air bag for use in a motor vehicle and method of producing same
GB2337723A (en) * 1998-05-30 1999-12-01 Growthscope Limited Producing a textile package
US20010006866A1 (en) * 1999-12-28 2001-07-05 Polymer Processing Research Institute, Ltd. Tow multiaxial non-woven fabric, and method of making the same
WO2001094673A1 (en) * 2000-06-02 2001-12-13 B & H Research Limited Formation of sheet material using hydroentanglement
DE10064687A1 (en) * 2000-12-22 2002-07-04 Fleissner Maschf Gmbh Co Process for the hydrodynamic application of a product web, also provided with finite products, with water jets and a nozzle device for producing liquid jets
US20020157766A1 (en) * 1999-06-10 2002-10-31 Rieter Perfojet Process for producing a nonwoven material, plant for implementing it and nonwoven thus obtained

Patent Citations (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2752247A (en) * 1952-02-04 1956-06-26 Ray C Chandler Rice processing
US5018255A (en) * 1987-06-26 1991-05-28 Vetrotex Saint-Gobain S.A. Method and apparatus for needling of glass mat and composite product made from said mat
US5308674A (en) * 1991-03-26 1994-05-03 E. I. Du Pont De Nemours And Company Tear-resistant stitchbonded fabric
US5151320A (en) * 1992-02-25 1992-09-29 The Dexter Corporation Hydroentangled spunbonded composite fabric and process
US5630261A (en) * 1994-06-15 1997-05-20 Jps Automotive Products Corporation Air bag for use in a motor vehicle and method of producing same
GB2337723A (en) * 1998-05-30 1999-12-01 Growthscope Limited Producing a textile package
US20020157766A1 (en) * 1999-06-10 2002-10-31 Rieter Perfojet Process for producing a nonwoven material, plant for implementing it and nonwoven thus obtained
US20010006866A1 (en) * 1999-12-28 2001-07-05 Polymer Processing Research Institute, Ltd. Tow multiaxial non-woven fabric, and method of making the same
WO2001094673A1 (en) * 2000-06-02 2001-12-13 B & H Research Limited Formation of sheet material using hydroentanglement
DE10064687A1 (en) * 2000-12-22 2002-07-04 Fleissner Maschf Gmbh Co Process for the hydrodynamic application of a product web, also provided with finite products, with water jets and a nozzle device for producing liquid jets

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1748101A2 (en) * 2005-07-26 2007-01-31 Fleissner GmbH Bulky fibrous laminate and its making
DE102005034821A1 (en) * 2005-07-26 2007-02-08 Fleissner Gmbh Voluminous fiber laminates and their production
EP1748101A3 (en) * 2005-07-26 2008-07-09 Fleissner GmbH Bulky fibrous laminate and its making
DE102008060327A1 (en) * 2008-12-03 2010-06-10 Fleissner Gmbh Method and device for producing a nonwoven product

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