EP1245708A1 - Multiaxiales Textilgitter für technische oder geotechnische Anwendung und Verfahren zu dessen Herstellung - Google Patents

Multiaxiales Textilgitter für technische oder geotechnische Anwendung und Verfahren zu dessen Herstellung Download PDF

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Publication number
EP1245708A1
EP1245708A1 EP02007003A EP02007003A EP1245708A1 EP 1245708 A1 EP1245708 A1 EP 1245708A1 EP 02007003 A EP02007003 A EP 02007003A EP 02007003 A EP02007003 A EP 02007003A EP 1245708 A1 EP1245708 A1 EP 1245708A1
Authority
EP
European Patent Office
Prior art keywords
weft
yarn
elements
warp
grid
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
EP02007003A
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English (en)
French (fr)
Other versions
EP1245708B1 (de
EP1245708B8 (de
Inventor
Luciano Gabino
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.)
ALPE ADRIA TEXTIL Srl
Original Assignee
Alpe Adria Textil Srl
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Publication date
Application filed by Alpe Adria Textil Srl filed Critical Alpe Adria Textil Srl
Publication of EP1245708A1 publication Critical patent/EP1245708A1/de
Publication of EP1245708B1 publication Critical patent/EP1245708B1/de
Application granted granted Critical
Publication of EP1245708B8 publication Critical patent/EP1245708B8/de
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
    • D04B21/14—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

Definitions

  • the invention concerns a multi-axial textile grid, for technical or geotechnical use, characterized by a mesh structure which allows it to resist both cutting forces acting on several axes in the same plane as the grid, and also torque forces acting thereon.
  • Such grids if used in the geotechnical field, are called "geogrids”.
  • the textile grid according to the invention has a multi-axial structure reinforced and stabilized both along two axes orthogonal to each other and also along two further axes oblique and rotated with respect to the first two.
  • the invention also concerns the method to manufacture said multi-axial grids.
  • the state of the art includes bi-axial textile grids used to impart stability and compactness to elements which are disconnected, incoherent and liable to slide or similar.
  • Such grids generally include a structure with orthogonal elements defined by a plurality of apertures which allow them to interact with the relative surfaces or supports on which they rest.
  • US-A-5,795,835 a bonded composite knitted structural textile formed of knitted polymeric components.
  • the first component is a high tenacity, high modulus, low elongation mono- or multifilament yarn.
  • the second component is a fusible polymer in yarn which encapsulates and bonds adjacent load bearing yarns.
  • the third component is an optional effect or bulking yarn.
  • the fourth component is a multifilament warp knit stitch forming yarn to form the ground structure of the knitted textile.
  • This structural textile has the disadvantage not to provide sufficient free area between the different links and not to have great features of resistance to the cutting forces in several directions and to the torque forces admiring on the same plane.
  • the purpose of the invention is to achieve a textile grid characterized by great planar stability on a plurality of axes, and therefore suitable to guarantee great efficiency of use even in conditions of stress and high cutting forces and considerable torque forces.
  • the purpose of the invention is to achieve a multi-axial textile grid or geogrid suitable to considerably increase, with respect to the conventional multi-axial textile, the anchorage of the surface on which it rests, or of the elements incorporated therein and also to increase the friction coefficient or cohesion, in order to obtain extremely good results of dimensional stability, also with respect to conventional bi-axial grids.
  • the multi-axial textile grid according to the invention can be employed in every type of intervention where planning resistance and flexibility are required in the case of composite materials, both active and passive processes of protection and consolidation in the geotechnical field or in other technical solutions concerned.
  • This grid is therefore applied in achieving interventions of flexibility or resistance, reinforcement or stabilization in the field of industry, roads, railways, or airports and similar, reclamation and protection against the erosion of banks of rivers, streams, canals, water courses and similar, reinforcement and protection against sea and wind erosion.
  • the invention provides to make this multi-axial textile grid by means of using the technology "warp knitting with weft insertion”.
  • the multi-axial textile grid according to the invention is achieved by means of sequences of "three-hinge arches", and therefore absolutely stable, arranged in such a manner as to allow to obtain and therefore exploit an ample area, open and free, which allows to apply the grid thus obtained for the specific functions, of a technical and geotechnical type, which it has to perform.
  • the multi-axial textile grid for technical or geotechnical use comprises a first mesh structure formed by the orthogonal braiding of a plurality of weft elements and a corresponding plurality of warp elements, and a second structure formed by further bundles of yarn disposed obliquely with respect to such weft elements and to such warp elements.
  • Such further bundles of yarn are orthogonal to each other and form a second mesh which defines groups of three-hinge arches located checker-wise inside the apertures of such first mesh structure formed by such weft and warp elements, leaving free areas.
  • the bundles of yarn are preferably disposed obliquely from 30° to 60° with respect to such weft and warp elements, so as to be aligned with determinate points of crossing of such weft and warp elements.
  • such weft and warp elements and such bundles of yarn are attached to each other by another yarn shaped so as to form a joining chain, which defines a textile structure formed by three-hinge arches which confer on such mesh structure great features of resistance to the cutting forces in several directions and to the torque forces admiring on the same plane, and which define strongly linked junctions.
  • the open and free area between the strands, strips or suchlike can vary, within the field of the invention, between a minimum value of ten percent and a maximum value of ninety-nine percent, with relation to the hollow-full ratio.
  • the optimum value is selected in each case according to a better and more targeted interaction to be obtained between the multi-axial textile structure and the technical and geotechnical manufactured products, composite structures, thin layers, grounds with differing granulometry, vegetal soils, sands, limes, gravel, stones, cement or asphalt conglomerates, or otherwise.
  • the multi-axial textile grid is made with apertures with a minimum dimension of about 10x10 mm of free area, with a thickness varying from a minimum of about 0.2 mm to a maximum of about 10 mm, and with a resistance varying from about 10 kN/m to about 10,000 kN/m and more, with the materials and yarns available today.
  • the invention provides to use, as a basic material, the following types of yarns:
  • the production process of said multi-axial textile grids advantageously provides finishing and enhancing steps, such as for example the impregnation of the fibres mentioned above with resins, whether they be polyolefin in origin, such as ethylene vinyl acetate, polyurethane, polystyrene, polyvinyl, such as polyvinyl chloride, or other types, heat treatments or otherwise.
  • finishing and enhancing steps allow to obtain a specific arrangement of the multi-axial textile grid according to the different purposes of use.
  • the multi-axial textile grid according to the invention combines, in a non-obvious fashion, the advantages of conventional bi-axial textile grids, such as the quality of cohesion, with the advantages of multi-axial textile, such as the resistance to cutting and torque forces, at the same time eliminating the shortcomings of both, such as weakness for bi-axial textile grids and low cohesion for multi-axial textiles.
  • a multi-axial textile grid 10 comprises a mesh structure 11 formed by the orthogonal braiding of a plurality of weft yarns 13 and a corresponding plurality of warp 12.
  • yarns is intended to mean both yarns as such, and also strands, straps and any other element suitable to be woven.
  • the yarns with which the weft 13 and warp 12 is formed are chosen from among various solutions of synthetic yarns of differing polymeric derivation, such as for example polyester, polyethylene terephthalate (PET), polyamide (PA), polypropylene (PP), polyethylene (PE), liquid crystal polymers (LCP), polyvinyl alcohol (PVA), oxidized polyacrylonitril (PAN), carbon fibre, polyethylene naphthalene (PEN) or similar, technological fibres of mineral derivation (glass fibre, ceramic yarns, metal yarns) or yarns of biological derivation (cotton, hemp, animal fleeces) or their combinations.
  • Advantageously synthetic yarns and yarns of mineral derivation are mainly used.
  • the weft 13 and warp 12 yarns are grouped together in bundles, separated from each other so as to form a net with apertures which can vary according to the field of use of the grid 10 and are indicatively greater than or equal to 10 x 10 mm.
  • the grid 10 further comprises further bundles of yarns 15 and 16 disposed obliquely, advantageously between 30° and 60°, and in the case shown here at 45°, with respect to the bundles of weft 13 and warp 12, in particular arranged so as to be aligned with determinate crossing points of the bundles of weft 13 and warp 12.
  • the method used to achieve this crossing is the one known as "warp knitting with multi-axial DOS system weft insertion".
  • the bundles of weft 13 and warp 12 yarns, and the diagonal yarns 15 and 16, are able to be attached to each other by a yarn 14 shaped so as to form a joining chain, intended to obtain a textile structure formed by three-hinge arches, which confers on the mesh structure 11 characteristics of great resistance to the cutting forces in several directions and to the torque forces acting on the same plane.
  • the bundles of yarn 15 and 16 in the case shown here are orthogonal to each other and form a second mesh 17 which defines groups of three-hinge arches located checker-wise inside the apertures of the mesh formed by the bundles of weft 13 and warp 12, leaving the adjacent areas free.
  • the design of the mesh thus obtained increases the free area wherein the apertures of the contact surfaces are incorporated, and consequently the cohesion of the grid 10 with the supporting surfaces or with the elements incorporated therein, at the same time conferring a greater resistance and stability to the system.
  • the grid 10 can also be subjected to subsequent finishing and/or enhancing steps, as shown above.

Landscapes

  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Woven Fabrics (AREA)
  • Knitting Of Fabric (AREA)
  • Braiding, Manufacturing Of Bobbin-Net Or Lace, And Manufacturing Of Nets By Knotting (AREA)
  • Treatment Of Fiber Materials (AREA)
  • Nonwoven Fabrics (AREA)
  • Details Of Garments (AREA)
EP02007003A 2001-03-30 2002-03-27 Multiaxiales Textilgitter für technische oder geotechnische Anwendung und Verfahren zu dessen Herstellung Expired - Lifetime EP1245708B8 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
ITUD010059 2001-03-30
IT2001UD000059A ITUD20010059A1 (it) 2001-03-30 2001-03-30 Griglia tessile multiassiale per impiego tecnico o geotecnico e procedimento per la sua fabbricazione

Publications (3)

Publication Number Publication Date
EP1245708A1 true EP1245708A1 (de) 2002-10-02
EP1245708B1 EP1245708B1 (de) 2008-01-16
EP1245708B8 EP1245708B8 (de) 2008-03-19

Family

ID=11460553

Family Applications (1)

Application Number Title Priority Date Filing Date
EP02007003A Expired - Lifetime EP1245708B8 (de) 2001-03-30 2002-03-27 Multiaxiales Textilgitter für technische oder geotechnische Anwendung und Verfahren zu dessen Herstellung

Country Status (4)

Country Link
EP (1) EP1245708B8 (de)
AT (1) ATE384153T1 (de)
DE (1) DE60224604T2 (de)
IT (1) ITUD20010059A1 (de)

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN100441758C (zh) * 2004-10-20 2008-12-10 东华大学 一种针织结构及其编织方法和专用装置
CN102488342A (zh) * 2010-12-08 2012-06-13 浙江高达新材料有限公司 双轴向经编特种服装衬布
CN105839285A (zh) * 2016-03-24 2016-08-10 江苏工程职业技术学院 一种高强经编双轴向复合土工布的生产方法
CN106884425A (zh) * 2017-04-17 2017-06-23 泰安路德工程材料有限公司 四向格栅及其制作方法
CN107099927A (zh) * 2017-05-02 2017-08-29 常州市宏发纵横新材料科技股份有限公司 低成本高品质经编单向织物及其生产工艺
CN107151859A (zh) * 2017-07-12 2017-09-12 浙江恒石纤维基业有限公司 一种具有高浸透速率的织物及其制备方法及应用
CN111757951A (zh) * 2018-02-23 2020-10-09 赛杰法拉利股份有限公司 具有增强线的片材的织物和包括所述织物的遮篷
KR102651115B1 (ko) * 2023-08-16 2024-03-25 김창환 올 풀림 및 변형 방지를 위한 지오그리드의 제조방법

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR102085762B1 (ko) * 2018-11-06 2020-03-06 윤태용 텍스타일 지오그리드

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4340174A1 (de) * 1993-11-25 1995-06-01 Saechsisches Textilforsch Inst Mehrschichtiges, voluminöses Geotextil
US5795835A (en) * 1995-08-28 1998-08-18 The Tensar Corporation Bonded composite knitted structural textiles
DE19915722A1 (de) * 1999-04-08 2000-10-12 Huesker Synthetic Gmbh & Co Textile Gitterstruktur, insbesondere Geogitter
US6171984B1 (en) * 1997-12-03 2001-01-09 Ppg Industries Ohio, Inc. Fiber glass based geosynthetic material

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2244835A (en) * 1939-05-18 1941-06-10 Jacob Rothman Textile material
DE3304345C2 (de) * 1983-02-09 1986-04-10 Karl Mayer Textil-Maschinen-Fabrik Gmbh, 6053 Obertshausen Kettenwirkware mit Verstärkungsfäden
US6074722A (en) * 1994-09-30 2000-06-13 Lockheed Martin Corporation Flexible material for use in an inflatable structure

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4340174A1 (de) * 1993-11-25 1995-06-01 Saechsisches Textilforsch Inst Mehrschichtiges, voluminöses Geotextil
US5795835A (en) * 1995-08-28 1998-08-18 The Tensar Corporation Bonded composite knitted structural textiles
US6171984B1 (en) * 1997-12-03 2001-01-09 Ppg Industries Ohio, Inc. Fiber glass based geosynthetic material
DE19915722A1 (de) * 1999-04-08 2000-10-12 Huesker Synthetic Gmbh & Co Textile Gitterstruktur, insbesondere Geogitter

Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN100441758C (zh) * 2004-10-20 2008-12-10 东华大学 一种针织结构及其编织方法和专用装置
CN102488342A (zh) * 2010-12-08 2012-06-13 浙江高达新材料有限公司 双轴向经编特种服装衬布
CN105839285A (zh) * 2016-03-24 2016-08-10 江苏工程职业技术学院 一种高强经编双轴向复合土工布的生产方法
CN106884425A (zh) * 2017-04-17 2017-06-23 泰安路德工程材料有限公司 四向格栅及其制作方法
CN106884425B (zh) * 2017-04-17 2022-08-09 泰安路德工程材料有限公司 四向格栅及其制作方法
CN107099927A (zh) * 2017-05-02 2017-08-29 常州市宏发纵横新材料科技股份有限公司 低成本高品质经编单向织物及其生产工艺
CN107099927B (zh) * 2017-05-02 2019-07-26 常州市宏发纵横新材料科技股份有限公司 经编单向织物及其生产工艺
CN107151859A (zh) * 2017-07-12 2017-09-12 浙江恒石纤维基业有限公司 一种具有高浸透速率的织物及其制备方法及应用
CN111757951A (zh) * 2018-02-23 2020-10-09 赛杰法拉利股份有限公司 具有增强线的片材的织物和包括所述织物的遮篷
KR102651115B1 (ko) * 2023-08-16 2024-03-25 김창환 올 풀림 및 변형 방지를 위한 지오그리드의 제조방법

Also Published As

Publication number Publication date
ATE384153T1 (de) 2008-02-15
ITUD20010059A1 (it) 2002-09-30
EP1245708B1 (de) 2008-01-16
DE60224604D1 (de) 2008-03-06
DE60224604T2 (de) 2009-01-15
EP1245708B8 (de) 2008-03-19

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