EP1171659B1 - Textile mesh structure, in particular, a geotextile - Google Patents

Textile mesh structure, in particular, a geotextile Download PDF

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Publication number
EP1171659B1
EP1171659B1 EP00910856A EP00910856A EP1171659B1 EP 1171659 B1 EP1171659 B1 EP 1171659B1 EP 00910856 A EP00910856 A EP 00910856A EP 00910856 A EP00910856 A EP 00910856A EP 1171659 B1 EP1171659 B1 EP 1171659B1
Authority
EP
European Patent Office
Prior art keywords
threads
warp
weft
fixing
thread
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.)
Expired - Lifetime
Application number
EP00910856A
Other languages
German (de)
French (fr)
Other versions
EP1171659A1 (en
Inventor
Ulrich Von Fransecky
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.)
Huesker Synthetic GmbH and Co
Original Assignee
Huesker Synthetic GmbH and Co
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 Huesker Synthetic GmbH and Co filed Critical Huesker Synthetic GmbH and Co
Publication of EP1171659A1 publication Critical patent/EP1171659A1/en
Application granted granted Critical
Publication of EP1171659B1 publication Critical patent/EP1171659B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • D—TEXTILES; PAPER
    • D04—BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
    • D04B—KNITTING
    • D04B21/00—Warp knitting processes for the production of fabrics or articles not dependent on the use of particular machines; Fabrics or articles defined by such processes
    • D04B21/10—Open-work fabrics
    • D—TEXTILES; PAPER
    • D04—BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
    • D04B—KNITTING
    • D04B21/00—Warp knitting processes for the production of fabrics or articles not dependent on the use of particular machines; Fabrics or articles defined by such processes
    • D04B21/14—Fabrics characterised by the incorporation by knitting, in one or more thread, fleece, or fabric layers, of reinforcing, binding, or decorative threads; Fabrics incorporating small auxiliary elements, e.g. for decorative purposes
    • D04B21/16—Fabrics characterised by the incorporation by knitting, in one or more thread, fleece, or fabric layers, of reinforcing, binding, or decorative threads; Fabrics incorporating small auxiliary elements, e.g. for decorative purposes incorporating synthetic threads
    • D04B21/165—Fabrics characterised by the incorporation by knitting, in one or more thread, fleece, or fabric layers, of reinforcing, binding, or decorative threads; Fabrics incorporating small auxiliary elements, e.g. for decorative purposes incorporating synthetic threads with yarns stitched through one or more layers or tows, e.g. stitch-bonded fabrics
    • D—TEXTILES; PAPER
    • D10—INDEXING SCHEME ASSOCIATED WITH SUBLASSES OF SECTION D, RELATING TO TEXTILES
    • D10B—INDEXING SCHEME ASSOCIATED WITH SUBLASSES OF SECTION D, RELATING TO TEXTILES
    • D10B2403/00—Details of fabric structure established in the fabric forming process
    • D10B2403/02—Cross-sectional features
    • D10B2403/024—Fabric incorporating additional compounds
    • D10B2403/0241—Fabric incorporating additional compounds enhancing mechanical properties
    • D10B2403/02412—Fabric incorporating additional compounds enhancing mechanical properties including several arrays of unbent yarn, e.g. multiaxial fabrics
    • D—TEXTILES; PAPER
    • D10—INDEXING SCHEME ASSOCIATED WITH SUBLASSES OF SECTION D, RELATING TO TEXTILES
    • D10B—INDEXING SCHEME ASSOCIATED WITH SUBLASSES OF SECTION D, RELATING TO TEXTILES
    • D10B2505/00—Industrial
    • D10B2505/20—Industrial for civil engineering, e.g. geotextiles
    • D10B2505/204—Geotextiles
    • 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
    • Y10T428/00—Stock material or miscellaneous articles
    • Y10T428/24—Structurally defined web or sheet [e.g., overall dimension, etc.]
    • Y10T428/24942—Structurally defined web or sheet [e.g., overall dimension, etc.] including components having same physical characteristic in differing degree
    • 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.]
    • Y10T442/10—Scrim [e.g., open net or mesh, gauze, loose or open weave or knit, etc.]
    • Y10T442/102—Woven scrim
    • 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.]
    • Y10T442/10—Scrim [e.g., open net or mesh, gauze, loose or open weave or knit, etc.]
    • Y10T442/102—Woven scrim
    • Y10T442/159—Including a nonwoven fabric which is not a scrim
    • 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.]
    • Y10T442/30—Woven fabric [i.e., woven strand or strip material]
    • Y10T442/3179—Woven fabric is characterized by a particular or differential weave other than fabric in which the strand denier or warp/weft pick count is specified

Landscapes

  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Knitting Of Fabric (AREA)
  • Woven Fabrics (AREA)
  • Treatments For Attaching Organic Compounds To Fibrous Goods (AREA)
  • Pit Excavations, Shoring, Fill Or Stabilisation Of Slopes (AREA)
  • Nonwoven Fabrics (AREA)
  • Filtering Materials (AREA)

Abstract

The invention relates to, in particular, a geotextile comprising linear running warp threads (1) and linear running weft threads (2) which are essentially orthogonal thereto. Said weft threads are joined to the warp threads (1) by means of fixing threads (3) which are applied by warp knitting and whose meshes wrap around the warp threads (1) along the entire length and around the weft threads (2) in the area of crossings (4). The warp threads (1) and the weft threads (2) are arranged individually or in groups in larger intervals which result in inner widths (5) of the mesh (6). The aim of the invention is to attain an improved joining of warp threads and weft threads without requiring the use of additional fixing threads or stronger fixing threads. To this end, the invention provides that, in the areas in which the weft threads (2) cross the warp threads (1), the lengths of the meshes (7) of the fixing threads (3) are distinctly shorter than the lengths in the areas of the mesh structure which are located therebetween.

Description

Die Erfindung bezieht sich auf eine textile Gitterstruktur, insbesondere Geogitter, mit geradlinig verlaufenden Kettfäden und im wesentlichen rechtwinklig zu den Kettfäden geradlinig verlaufenden Schußfäden, die mit den Kettfäden mittels Fixierungsfäden verbunden sind, die durch Kettwirken aufgebracht sind und deren Maschen die Kettfäden in ganzer Länge und die Schußfäden im Bereich der Kreuzungen umschlingen, wobei die Kettfäden und die Schußfäden einzeln oder in Gruppen in größeren, die lichten Weiten des Gitters ergebenden Abständen angeordnet sind.The invention relates to a textile lattice structure, in particular Geogrid, with straight running warp threads and essentially at right angles to the warp threads straight weft threads, with the warp threads are connected by means of fixing threads, which act by warp knitting are applied and their stitches the warp threads in full length and the Weft threads in the intersections wrap around, with the warp threads and the wefts individually or in groups in larger, the clear widths are arranged of the grid resulting intervals.

Textile Gitterstrukturen dieser Art sind bekannt aus den US-Patenten 4,472,086 und 4,540,311. Die geradlinig verlaufenden und lastaufnehmenden Kettfäden und Schußfäden des Gitters bestehen vorzugsweise aus hochmodulen Polyestergarnen oder anderen hochfesten Filamentgarnen, z.B. aus Polyamid. Der aufgewirkte Fixierfaden, der die Kettfäden mit den Schußfäden in Form von Kettmaschen oder Trikotmaschen verbindet, ist in seiner Fadenstärke erheblich schwächer als die Kettfäden und die Schußfäden.Textile lattice structures of this type are known from the US patents 4,472,086 and 4,540,311. The rectilinear and load-bearing Warp threads and weft threads of the grid are preferably made high modulus polyester yarns or other high strength filament yarns, e.g. made of polyamide. The knitted fixing thread, the warp threads with the Weft threads in the form of Kettmaschen or trikotmaschen connects, is in its thread strength significantly weaker than the warp threads and wefts.

Erforderlichenfalls wird diese Gitterstruktur nach ihrer Herstellung mit einem Weichkunststoff, zum Beispiel PVC, mit einer Bitumenemulsion oder mit Latex ummantelt.If necessary, this lattice structure with after their production a soft plastic, for example PVC, with a bitumen emulsion or coated with latex.

Der Erfindung liegt die Aufgabe zugrunde, eine bessere Verbindung von Kettfäden und Schußfäden zu erreichen, ohne zusätzliche Fixierungsfäden oder stärkere Fixierungsfäden zu benötigen.The invention has for its object to provide a better connection of To achieve warp threads and weft threads without additional fixing threads or to require stronger fixation threads.

Diese Aufgabe wird erfindungsgemäß dadurch gelöst, daß in den Bereichen, in denen die Schußfäden die Kettfäden kreuzen, die Längen der Maschen der Fixierungsfäden deutlich kürzer sind als in den dazwischen liegenden Bereichen.This object is achieved according to the invention in that in the areas in which the weft threads cross the warp threads, the lengths of the stitches of the Fixation threads are significantly shorter than in the intervening Areas.

Vorteilhafterweise ist die Länge der Maschen der Fixierungsfäden in den Bereichen, in denen die Schußfäden die Kettfäden kreuzen, um mindestens 30 % kürzer als die Länge der Maschen zwischen den Kreuzungsbereichen. Durch diese Maßnahme wird eine erhebliche Ersparnis an Fixierungsfäden bzw. Fixierungsgarn erreicht, ohne daß Einbußen an der Festigkeit der Gitterstruktur zu befürchten sind. Ferner wird auch die Herstellungsgeschwindigkeit dieser textilen Gitterstrukturen vergrößert.Advantageously, the length of the stitches of the fixing threads in the Areas where the weft threads cross the warp threads by at least 30% shorter than the length of the stitches between the crossing areas. By this measure, a considerable saving in fixing threads Fixierungsgarn achieved without sacrificing the strength of the Grid structure are to be feared. Furthermore, the production speed is also enlarged of these textile grid structures.

Weitere Merkmale der Erfindung ergeben sich aus den Patentansprüchen.Further features of the invention will become apparent from the claims.

In der folgenden Beschreibung wird ein Ausführungsbeispiel der Erfindung unter Bezugnahme auf die Zeichnungen näher erläutert. Die Zeichnungen zeigen in

Fig. 1
eine schematisierte Zeichnung der textilen Gitterstruktur nach der Erfindung;
Fig. 2
eine vergrößerte Ansicht eines Rapports der Gitterstruktur von einer Seite und
Fig. 3
eine vergrößerte Ansicht eines Rapportes der Gitterstruktur von der anderen Seite.
In the following description, an embodiment of the invention will be explained in more detail with reference to the drawings. The drawings show in
Fig. 1
a schematic drawing of the textile grid structure according to the invention;
Fig. 2
an enlarged view of a repeat of the lattice structure from one side and
Fig. 3
an enlarged view of a repeat of the grid structure from the other side.

Die textile Gitterstruktur nach Fig. 1 setzt sich zusammen aus geradlinig verlaufenden Kettfäden 1 und rechtwinklig zu den Kettfäden 1 verlaufenden Schußfäden 2. Jeweils drei Kettfäden 1 sind zu je einer Kettfadengruppe 9 zusammengefaßt. Ferner sind jeweils zwei Schußfäden 2 zu einer Schußfadengruppe 11 zusammengefaßt. Die Schußfäden 2 sind mit den Kettfäden 1 mittels aufgewirkter Fixierungsfäden 3 verbunden. Die Maschen der Fixierungsfäden 3 verlaufen im Zickzack über die Kettfäden 1. Die Kettfadengruppen 9 und die Schußfadengruppen 11 sind in größeren, die lichten Weiten 5 des Gitters 6 ergebenden Abständen angeordnet.The textile grid structure according to FIG. 1 is composed of a straight line extending warp threads 1 and at right angles to the warp threads 1 extending Weft threads 2. Each three warp threads 1 are each a warp thread group. 9 summarized. Furthermore, two weft threads 2 are each a weft thread group 11 summarized. The weft threads 2 are with the warp threads. 1 connected by means of knitted fixation threads 3. The stitches of the fixation threads 3 are zigzagging over the warp threads 1. The warp thread groups 9 and weft groups 11 are in larger, the clear Wide 5 of the grid 6 resulting intervals arranged.

Erfindungsgemäß sind in den Bereichen 4, in denen die Schußfäden 2 die Kettfäden 1 kreuzen, die Längen 8' der Maschen 7' der Fixierunssfäden 3 deutlich kürzer als in den dazwischen liegenden Bereichen der Gitterstruktur.According to the invention in the areas 4, in which the weft threads 2 the Warp threads 1 intersect, the lengths 8 'of the stitches 7' of the Fixierunssfäden. 3 significantly shorter than in the intervening areas of the lattice structure.

Wie insbesondere die Figuren 2 und 3 zeigen, sind die Längen 8' der Maschen 7' bzw. der Fadenschleifen der Fixierungsfäden 3 in den Bereichen 4, in denen die Schußfäden 2 die Kettfäden 1 kreuzen, um mindestens 30 %, vorzugsweise 50 %, kürzer als die Längen 8 der Maschen 7 zwischen den Kreuzunssbereichen 4. In den Kreuzungsbereichen 4 kann jedem Schußfaden 2 pro Kettfaden 1 eine Masche 7' der Fixierungsfäden 3 zugeordnet sein.As particularly shown in Figures 2 and 3, the lengths are 8 'of Mesh 7 'or the thread grinding of the fixing threads 3 in the areas 4, in which the weft threads 2 intersect the warp threads 1 by at least 30%, preferably 50%, shorter than the lengths 8 of the stitches 7 between the Kreuzunssbereichen 4. In the crossing areas 4, each weft 2 per warp 1 a stitch 7 'of the fixing threads 3 be assigned.

Damit die Kettfäden 1 gegen seitliches Verschieben gesichert sind, ist ein Verbindungsfaden 10 aufgeraschelt, der die Kettfäden 1 einer Kettfadengruppe 9 zusammenhält bzw. gegen seitliches Verschieben festlegt. Dieser Verbindungsfaden 10 kann entweder die Kettfäden 1 einer Kettfadengruppe 9 im Zickzack-Verlauf umschlingen oder aber, wie die Figuren 2 und 3 zeigen, die Fixierungsfäden 3 einer jeden Kettfadengruppe 9. Es ist aber auch möglich, die Kettfäden 1 einer Kettfadengruppe 9 dadurch gegen seitliches Verschieben festzulegen, daß die Fixierungsfäden 3 einer Kettfadengruppe 9 durch Trikotlegung von einem Kettfaden 1 einer Kettfadengruppe 9 zum benachbarten Kettfaden 1 der gleichen Kettfadengruppe 9 wechseln.So that the warp threads 1 are secured against lateral displacement is a Connecting thread 10 aufgeraschelt, the warp threads 1 of a warp thread group 9 holds together or determines against lateral displacement. This Connecting thread 10 can either the warp threads 1 a warp thread group. 9 wrap around in a zigzag course or like figures 2 and 3 show the fixing threads 3 of each warp thread group 9. It is however also possible, the warp threads 1 of a warp thread group 9 against to set lateral displacement, that the fixing threads 3 a warp thread group 9 by tricot laying of a warp thread 1 of a warp thread group 9 to the adjacent warp thread 1 of the same warp thread 9 switch.

Die erfindungsgemäße textile Gitterstruktur kann in bekannter Weise auch mit einer Vlieslage vereinigt sein. The textile lattice structure according to the invention can also in a known manner be united with a nonwoven layer.

Bezugszeichenliste:LIST OF REFERENCE NUMBERS

11
Kettfädenwarp
22
Schußfädenwefts
33
Fixierungsfädenfixing threads
44
KreuzunssbereichKreuzunssbereich
55
lichte Weiteclear width
66
Gittergrid
77
Maschemesh
7'7 '
Masche im Bereich der Kreuzung 4Mesh in the intersection 4
88th
Länge der Masche 7Length of the stitch 7
8'8th'
Länge der Masche 7'Length of the stitch 7 '
99
Kettfadengruppewarp thread
1010
Verbindungsfadenconnecting thread
1111
SchußfadengruppeWeft thread group

Claims (7)

  1. A textile grid structure, in particular a geogrid, comprising linearly extending warp threads (1) and weft threads (2) which extend linearly substantially at a right angle to the warp threads (1) and which are joined to the warp threads (1) by means of fixing threads (3) which are applied by warp knitting and the meshes of which extend around the warp threads (1) over the entire length and the weft threads (2) in the region of the intersections (4), wherein the warp threads (1) and the weft threads (2) are arranged individually or in groups at relatively large spacings which define the clear widths (5) of the grid (6), characterised in that in the regions in which the weft threads (2) cross the warp threads (1) the lengths of the meshes (7) of the fixing threads (3) are markedly shorter than in those regions of the grid structure which are therebetween.
  2. A grid structure according to claim 1, characterised in that the lengths of the meshes (7') of the fixing threads (3) in the regions (4) in which the weft threads (2) cross the warp threads (1) are at least 30% shorter than the lengths of the meshes (7) between the intersection regions (4).
  3. A grid structure according to claim 1 or claim 2, characterised in that in the intersection region the lengths of the meshes (7') of the fixing threads (3) are so short that a mesh (7') is associated with each weft thread (2) of a weft thread group (11).
  4. A grid structure according to one of claims 1 to 3, characterised in that associated with each warp thread (1) is a fixing thread (3) which embraces the warp thread (1) in the form of warp meshes (7, 7').
  5. A grid structure with warp thread groups (9) formed from at least two warp threads (1) extending closely adjacent to each other, according to claim 1 or claim 2, characterised in that the warp threads (1) of a warp thread group (9) are fixed to prevent lateral displacement by means of a joining thread (10) extending in a zig-zag configuration.
  6. A grid structure according to claim 1 or claim 2, characterised in that the fixing threads (3) of a warp thread group (9), which are associated with each warp thread (1), are fixed to prevent lateral displacement by means of a joining thread (10) extending in a zig-zag configuration.
  7. A grid structure according to one of claims 1 to 6, characterised in that the joining threads (10) or fixing threads (3) which are knitted on or applied by Raschel knitting join the warp and weft threads of the grid to a non-woven material layer.
EP00910856A 1999-04-08 2000-03-17 Textile mesh structure, in particular, a geotextile Expired - Lifetime EP1171659B1 (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE19915722A DE19915722A1 (en) 1999-04-08 1999-04-08 Textile lattice structure, especially geogrid
DE19915722 1999-04-08
PCT/EP2000/002395 WO2000061850A1 (en) 1999-04-08 2000-03-17 Textile mesh structure, in particular, a geotextile

Publications (2)

Publication Number Publication Date
EP1171659A1 EP1171659A1 (en) 2002-01-16
EP1171659B1 true EP1171659B1 (en) 2003-11-12

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ID=7903805

Family Applications (1)

Application Number Title Priority Date Filing Date
EP00910856A Expired - Lifetime EP1171659B1 (en) 1999-04-08 2000-03-17 Textile mesh structure, in particular, a geotextile

Country Status (12)

Country Link
US (1) US6706376B1 (en)
EP (1) EP1171659B1 (en)
JP (1) JP4444516B2 (en)
AT (1) ATE254198T1 (en)
AU (1) AU763684C (en)
BR (1) BR0009567B1 (en)
CA (1) CA2365950C (en)
CZ (1) CZ299126B6 (en)
DE (2) DE19915722A1 (en)
ES (1) ES2209834T3 (en)
PL (1) PL199670B1 (en)
WO (1) WO2000061850A1 (en)

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CA2365950C (en) 2005-04-19
DE19915722A1 (en) 2000-10-12
PL350036A1 (en) 2002-10-21
AU3290900A (en) 2000-11-14
US6706376B1 (en) 2004-03-16
BR0009567A (en) 2002-01-08
AU763684C (en) 2004-05-06
ES2209834T3 (en) 2004-07-01
BR0009567B1 (en) 2009-08-11
CZ20013550A3 (en) 2002-02-13
ATE254198T1 (en) 2003-11-15
AU763684B2 (en) 2003-07-31
JP4444516B2 (en) 2010-03-31
WO2000061850A1 (en) 2000-10-19
CA2365950A1 (en) 2000-10-19
EP1171659A1 (en) 2002-01-16
PL199670B1 (en) 2008-10-31
JP2002541354A (en) 2002-12-03
DE50004424D1 (en) 2003-12-18
CZ299126B6 (en) 2008-04-30

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