EP1565604A1 - Method for the production of geotextiles from melt-spun fibers - Google Patents

Method for the production of geotextiles from melt-spun fibers

Info

Publication number
EP1565604A1
EP1565604A1 EP03782231A EP03782231A EP1565604A1 EP 1565604 A1 EP1565604 A1 EP 1565604A1 EP 03782231 A EP03782231 A EP 03782231A EP 03782231 A EP03782231 A EP 03782231A EP 1565604 A1 EP1565604 A1 EP 1565604A1
Authority
EP
European Patent Office
Prior art keywords
belt
melt
geotextiles
consolidation
sieve belt
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Withdrawn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
EP03782231A
Other languages
German (de)
French (fr)
Inventor
Uwe Bornmann
Albert Mittermayr
Alois Punkenhofer
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 EP03782231A priority Critical patent/EP1565604A1/en
Publication of EP1565604A1 publication Critical patent/EP1565604A1/en
Withdrawn legal-status Critical Current

Links

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
    • D04H3/00—Non-woven fabrics formed wholly or mainly of yarns or like filamentary material of substantial length
    • D04H3/08—Non-woven fabrics formed wholly or mainly of yarns or like filamentary material of substantial length characterised by the method of strengthening or consolidating
    • D04H3/10—Non-woven fabrics formed wholly or mainly of yarns or like filamentary material of substantial length characterised by the method of strengthening or consolidating with bonds between yarns or filaments made mechanically
    • D04H3/11—Non-woven fabrics formed wholly or mainly of yarns or like filamentary material of substantial length characterised by the method of strengthening or consolidating with bonds between yarns or filaments made mechanically by fluid jet
    • 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
    • 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
    • D04H3/00—Non-woven fabrics formed wholly or mainly of yarns or like filamentary material of substantial length
    • D04H3/005—Synthetic yarns or filaments
    • D04H3/007—Addition polymers
    • 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
    • D04H3/00—Non-woven fabrics formed wholly or mainly of yarns or like filamentary material of substantial length
    • D04H3/005—Synthetic yarns or filaments
    • D04H3/009—Condensation or reaction polymers
    • D04H3/011—Polyesters
    • 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
    • D04H3/00—Non-woven fabrics formed wholly or mainly of yarns or like filamentary material of substantial length
    • D04H3/08—Non-woven fabrics formed wholly or mainly of yarns or like filamentary material of substantial length characterised by the method of strengthening or consolidating

Definitions

  • the invention relates to a process for the production of geotextiles from melt-spun fibers, the melt-spun continuous fibers being transported continuously and trouble-free over all consolidation and aftertreatment zones on a screen belt.
  • DE 196 27 256 describes a method for the hydromechanical interlacing of fibers of a fiber web, in which multiple needling takes place with alternate web guidance and the transfer from one to the other transport device takes place through constant and stretch-free support of the fiber web.
  • the fibrous web is supported by a continuous endless web during transport from one support surface to the other.
  • Both methods are intended to avoid disturbances in the fiber web which has not yet been sufficiently strengthened.
  • the first disturbances in the fiber web already occur after the fibers have been deposited during transport to the first consolidation zone.
  • the object of the invention was to provide a method for depositing and subsequently hydrodynamically intertwining the fibers, in which a disruption of the fiber web is also avoided immediately after the fibers have been deposited in front of the first consolidation zone.
  • the invention therefore relates to a process for the production of geotextiles from melt-spun filaments by hydrodynamic interlacing, characterized in that the melt-spun filaments are deposited on an endless sieve belt and are transported on this sieve belt through the first consolidation stage, the filaments additionally being carried out during the entire process can be fixed on the sieve belt by suction zones and solidified in the first hardening stage so that trouble-free transport without a conveyor belt is possible.
  • the melt-spun filaments are therefore initially deposited in the usual manner on the endless screen belt and transported to the first consolidation stage on this screen belt.
  • the deposited filaments are fixed on the sieve belt during transport by suction zones so that no disturbances can occur during the transport of the unconsolidated filaments.
  • the air speed of the intake air is 1-15 m / s.
  • the water jets act through the sieve belt and / or the sieve belt serves as a base.
  • the sieve belt has a mesh size of 1-8 cm “1 , preferably 2-5 cm " 1 . If the screen belt serves as a base, the screen belt has a mesh size of 10-100 cm -1 , preferably 20-60 cm ⁇ 1 .
  • the geotextile After hardening in the first hardening stage, the geotextile is sufficiently hardened so that it can be guided without disturbing the structure, even without the support of a conveyor belt. If necessary, the sieve belt can also be passed through any further consolidation stages. Both the fleece formation and the consolidation take place on the sieve belt.
  • the geotextiles produced in this way are characterized by great homogeneity and uniformity.
  • melt-spinnable raw materials are suitable as filaments, for example polyolefins such as polypropylene, polyamides or polyester.
  • Another object of the invention is a device for producing geotextiles from melt-spun filaments, characterized in that a sieve belt is guided under the depositing device, suction zones are applied to it and the sieve belt is guided to the first consolidation device.
  • FIGS. 1 and 2 Such devices are shown in FIGS. 1 and 2:

Landscapes

  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Nonwoven Fabrics (AREA)
  • Preliminary Treatment Of Fibers (AREA)

Abstract

The invention relates to a method for the production of geotextiles from melt-spun fibers. The melt-spun endless fibers are continuously transported in an unimpeded manner on a screen belt along all hardening and post treatment zones.

Description

Verfahren zur Herstellung von Geotextilien aus schmelzgesponnenen FasernProcess for the production of geotextiles from melt-spun fibers
Die Erfindung betrifft ein Verfahren zur Herstellung von Geotextilien aus schmelzgesponnenen Fasern, wobei die schmelzgesponnenen Endlosfasern auf einem Siebband kontinuierlich und störungsfrei über alle Verfestigungs- und Nachbehandlungszonen transportiert werden.The invention relates to a process for the production of geotextiles from melt-spun fibers, the melt-spun continuous fibers being transported continuously and trouble-free over all consolidation and aftertreatment zones on a screen belt.
Aus der DE 196 27 256 ist ein Verfahren zum hydromechanischen Verschlingen von Fasern einer Faserbahn beschrieben, bei dem eine mehrfache Vemadelung bei wechselseitiger Warenbahnführung erfolgt und die Übergabe von einer zur anderen Transportvorrichtuπg durch ständige und dehnungsfreie Unterstützung der Faserbahn erfolgt.DE 196 27 256 describes a method for the hydromechanical interlacing of fibers of a fiber web, in which multiple needling takes place with alternate web guidance and the transfer from one to the other transport device takes place through constant and stretch-free support of the fiber web.
Dazu wird die Faserbahn während des Transports von einer Auflagefläche zur anderen durch ein mitlaufendes Endlosbahn unterstützt.For this purpose, the fibrous web is supported by a continuous endless web during transport from one support surface to the other.
Aus der EP 0 859 076 ist eine Vorrichtung zum hydrodynamischen Verschlingen von Fasern einer Faserbahn bekannt, wobei zur stärkeren Verfestigung in der ersten Vernadelungseinheit ein dem die Faserbahn transportierenden Endlosband ein gegenläufig geführtes Endlosband zugeordnet ist, und die Faserbahn in dem zwischen den Endlosbändern entstehenden konischen Spalt zunehmend verdichtet wird.From EP 0 859 076 a device for hydrodynamically entangling fibers of a fibrous web is known, with an endless belt that is guided in opposite directions for the fibrous web transporting the fibrous web, and the fibrous web in the conical gap that arises between the endless belts in the first needling unit for stronger consolidation is increasingly compressed.
Beide Verfahren sollen Störungen in der noch nicht ausreichend verfestigten Faserbahn vermieden werden.Both methods are intended to avoid disturbances in the fiber web which has not yet been sufficiently strengthened.
Allerdings treten die ersten Störungen in der Faserbahn bereits nach der Ablage der Fasern beim Transport zur ersten Verfestigungszone auf.However, the first disturbances in the fiber web already occur after the fibers have been deposited during transport to the first consolidation zone.
Aufgabe der Erfindung war die Bereitstellung eines Verfahrens zur Ablage und anschließenden hydrodynamischen Verschlingung der Fasern, bei dem auch eine Störung der Faserbahn unmittelbar nach der Ablage der Fasern vor der ersten Verfestigungszone vermieden wird.The object of the invention was to provide a method for depositing and subsequently hydrodynamically intertwining the fibers, in which a disruption of the fiber web is also avoided immediately after the fibers have been deposited in front of the first consolidation zone.
BESTATIGUNGSKOPIE Gegenstand der Erfindung ist daher ein Verfahren zur Herstellung von Geotextilien aus schmelzgesponnenen Filamenten durch hydrodynamische Verschlingung, dadurch gekennzeichnet, dass die schmelzgesponnen Filamente auf einem endlosen Siebband abgelegt werden, auf diesem Siebband durch die erste Verfestigungsstufe transportiert werden, wobei die Filamente zusätzlich während des gesamten Vorgangs durch Saugzonen auf dem Siebband fixiert werden und so bereits in der ersten Verfestigungsstufe ausreichend verfestigt wird, dass ein störungsfreier Transport ohne Transportband möglich ist.BESTATIGUNGSKOPIE The invention therefore relates to a process for the production of geotextiles from melt-spun filaments by hydrodynamic interlacing, characterized in that the melt-spun filaments are deposited on an endless sieve belt and are transported on this sieve belt through the first consolidation stage, the filaments additionally being carried out during the entire process can be fixed on the sieve belt by suction zones and solidified in the first hardening stage so that trouble-free transport without a conveyor belt is possible.
Die schmelzgesponnenen Filamente werden also vorerst auf übliche Weise auf dem endlosen Siebband abgelegt und auf diesem Siebband zur ersten Verfestigungsstufe transportiert. Die abgelegten Filamente werden dabei während des Transports auf dem Siebband durch Saugzonen fixiert, sodass keine Störungen beim Transport der unverfestigten Filamente auftreten können. Die Luftgeschwindigkeit der angesaugten Luft beträgt dabei 1-15 m/s.The melt-spun filaments are therefore initially deposited in the usual manner on the endless screen belt and transported to the first consolidation stage on this screen belt. The deposited filaments are fixed on the sieve belt during transport by suction zones so that no disturbances can occur during the transport of the unconsolidated filaments. The air speed of the intake air is 1-15 m / s.
In der ersten Verfestigungsstufe wirken die Wasserstrahlen je nach Anordnung der Verfestigungseinrichtung durch das Siebband und/oder das Siebband dient als Unterlage.In the first consolidation stage, depending on the arrangement of the consolidation device, the water jets act through the sieve belt and / or the sieve belt serves as a base.
Für die Ausführungsvariante der Verfestigung durch das Siebband, weist das Siebband eine Maschenweite von 1 - 8 cm "1 , vorzugsweise 2 - 5 cm"1 auf. Dient das Siebband als Unterlage, weist das Siebband eine Maschenwerte von 10-100 cm _1 , vorzugsweise 20 - 60 cm ~1 auf.For the embodiment variant of the consolidation by the sieve belt, the sieve belt has a mesh size of 1-8 cm "1 , preferably 2-5 cm " 1 . If the screen belt serves as a base, the screen belt has a mesh size of 10-100 cm -1 , preferably 20-60 cm ~ 1 .
Nach der Verfestigung in der ersten Verfestigungsstufe ist das Geotextil ausreichend verfestigt, sodass es ohne Störungen der Struktur auch ohne Unterstützung eines Transportbandes geführt werden kann. Gegebenenfalls kann das Siebband aber auch durch etwaige weitere Verfestigungsstufen geführt werden. Auf dem Siebband findet also sowohl die Vliesbildung als auch die Verfestigung statt.After hardening in the first hardening stage, the geotextile is sufficiently hardened so that it can be guided without disturbing the structure, even without the support of a conveyor belt. If necessary, the sieve belt can also be passed through any further consolidation stages. Both the fleece formation and the consolidation take place on the sieve belt.
Durch dieses Verfahren ist es mögliche jede Störung in der Struktur des noch unverfestigten Geotextils nach der Ablage zu vermeiden. Es können daher aufwendige Verfahrensführungen wie beispielsweise eine wechselseitige Führung vermieden werden.With this method it is possible to avoid any disturbance in the structure of the still unconsolidated geotextile after it has been deposited. Complex procedures, such as mutual guidance, can therefore be avoided.
Die auf diese Weise hergestellten Geotextilien zeichnen sich durch große Homogenität und Gleichmäßigkeit aus.The geotextiles produced in this way are characterized by great homogeneity and uniformity.
Als Filamente kommen alle schmelzspinnbaren Rohstoffe in Frage, beispielsweise Polyolefine, wie Polypropylen, Polyamide oder Polyester.All melt-spinnable raw materials are suitable as filaments, for example polyolefins such as polypropylene, polyamides or polyester.
Ein weiterer Gegenstand der Erfindung ist eine Vorrichtung zur Herstellung von Geotextilien aus schmelzgesponnenen Filamenten, dadurch gekennzeichnet, dass unter der Ablagevorrichtung ein Siebband geführt wird, an das Saugzonen angelegt sind und das Siebband bis zur ersten Verfestigungseinrichtung geführt wird.Another object of the invention is a device for producing geotextiles from melt-spun filaments, characterized in that a sieve belt is guided under the depositing device, suction zones are applied to it and the sieve belt is guided to the first consolidation device.
In Fig. 1 und Fig. 2 sind derartige Vorrichtungen dargestellt: Darin bedeutenSuch devices are shown in FIGS. 1 and 2:
1 - Filamentschleier1 - filament veil
2 - unverfestigtes Vlies2 - unconsolidated fleece
3 - Transportzone mit Absaugung3 - Transport zone with suction
4 - Kompaktierband4 - compacting belt
5 - Wasserstrahlverfestigungseinheit5 - hydroentangling unit
6 - Absaugung6 - suction
7 - Spinnband7 - spinning belt
8 - verfestigtes Geotextil 8 - solidified geotextile

Claims

Patentansprüche:claims:
1) Verfahren zur Herstellung von Geotextilien aus schmelzgesponnenen Filamenten durch hydrodynamische Verschlingung, dadurch gekennzeichnet, dass die schmelzgesponnen Filamente auf einem endlosen Siebband abgelegt werden, auf diesem Siebband durch die erste Verfestigungsstufe transportiert werden, wobei die Filamente zusätzlich während des gesamten Vorgangs durch Saugzonen auf dem Siebband fixiert werden und so bereits in der ersten Verfestigungsstufe ausreichend verfestigt wird, dass ein störungsfreier Transport ohne Transportband möglich ist.1) Process for the production of geotextiles from melt-spun filaments by hydrodynamic interlacing, characterized in that the melt-spun filaments are deposited on an endless sieve belt, are transported on this sieve belt through the first consolidation stage, the filaments additionally being sucked through the suction zones on the entire process Sieve belt are fixed and is already sufficiently solidified in the first consolidation stage so that trouble-free transport without a conveyor belt is possible.
2) Verfahren nach Anspruch 1, dadurch gekennzeichnet, dass das Siebband durch alle Verfestigungsstufen geführt wird.2) Method according to claim 1, characterized in that the screen belt is passed through all consolidation stages.
3) Verfahren nach einem der Ansprüche 1 oder 2, dadurch gekennzeichnet, dass in den Saugzonen ein Unterdruck von 1 bis 100 mbar angelegt wird.3) Method according to one of claims 1 or 2, characterized in that a negative pressure of 1 to 100 mbar is applied in the suction zones.
4) Verfahren nach einem der Ansprüche 1 bis 3, dadurch gekennzeichnet, dass die Maschenweite des Siebbandes 1 - 8 cm"1 beträgt, wenn die Verfestigung durch das Siebband hindurch erfolgt.4) Method according to one of claims 1 to 3, characterized in that the mesh size of the screen belt is 1 - 8 cm "1 when the solidification takes place through the screen belt.
5) Verfahren nach einem der Ansprüche 1 bis 3, dadurch gekennzeichnet ddaassss ddiiee MMaasscchheennwweeiittee ddeess SSiieelbbandes 10 - 100 cm"1 beträgt, wenn das Siebband als Unterlage dient5) Method according to one of claims 1 to 3, characterized in that the MMaasschchheennwweeiittee ddeess SSiieelbbandes is 10 - 100 cm "1 if the sieve belt serves as a base
6) Vorrichtung zur Herstellung von Geotextilien aus schmelzgesponnenen Filamenten, dadurch gekennzeichnet, dass unter der Ablagevorrichtung ein Siebband geführt wird, an das Saugzonen angelegt sind und das Siebband bis zur ersten Verfestigungseinrichtung geführt wird. ) Geotextilien hergestellt nach einem Verfahren gemäß den Ansprüchen 1 -4. 6) Device for the production of geotextiles from melt-spun filaments, characterized in that a sieve belt is guided under the depositing device, suction zones are applied to it and the sieve belt is guided to the first consolidation device. ) Geotextiles produced by a method according to claims 1-4.
EP03782231A 2002-11-27 2003-11-26 Method for the production of geotextiles from melt-spun fibers Withdrawn EP1565604A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP03782231A EP1565604A1 (en) 2002-11-27 2003-11-26 Method for the production of geotextiles from melt-spun fibers

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
EP02026435 2002-11-27
EP02026435A EP1424425A1 (en) 2002-11-27 2002-11-27 Process of making geotextiles from spunbonded filaments
EP03782231A EP1565604A1 (en) 2002-11-27 2003-11-26 Method for the production of geotextiles from melt-spun fibers
PCT/EP2003/013310 WO2004048667A1 (en) 2002-11-27 2003-11-26 Method for the production of geotextiles from melt-spun fibers

Publications (1)

Publication Number Publication Date
EP1565604A1 true EP1565604A1 (en) 2005-08-24

Family

ID=32241281

Family Applications (2)

Application Number Title Priority Date Filing Date
EP02026435A Withdrawn EP1424425A1 (en) 2002-11-27 2002-11-27 Process of making geotextiles from spunbonded filaments
EP03782231A Withdrawn EP1565604A1 (en) 2002-11-27 2003-11-26 Method for the production of geotextiles from melt-spun fibers

Family Applications Before (1)

Application Number Title Priority Date Filing Date
EP02026435A Withdrawn EP1424425A1 (en) 2002-11-27 2002-11-27 Process of making geotextiles from spunbonded filaments

Country Status (12)

Country Link
US (1) US20060150377A1 (en)
EP (2) EP1424425A1 (en)
JP (1) JP4518953B2 (en)
KR (1) KR20050084689A (en)
CN (1) CN100465366C (en)
AU (1) AU2003289897B2 (en)
BR (1) BR0316678A (en)
CA (1) CA2507605A1 (en)
RU (1) RU2298599C2 (en)
TR (1) TR200501977T2 (en)
WO (1) WO2004048667A1 (en)
ZA (1) ZA200504985B (en)

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KR20180081931A (en) * 2017-01-09 2018-07-18 전북대학교산학협력단 Mass production apparatus for manufacturing filter laminating nano-fiber

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Also Published As

Publication number Publication date
BR0316678A (en) 2005-10-11
RU2298599C2 (en) 2007-05-10
AU2003289897A1 (en) 2004-06-18
JP4518953B2 (en) 2010-08-04
RU2005120021A (en) 2006-01-20
EP1424425A1 (en) 2004-06-02
WO2004048667A1 (en) 2004-06-10
AU2003289897B2 (en) 2009-09-24
KR20050084689A (en) 2005-08-26
TR200501977T2 (en) 2005-07-21
CN100465366C (en) 2009-03-04
ZA200504985B (en) 2006-12-27
JP2006508264A (en) 2006-03-09
US20060150377A1 (en) 2006-07-13
CA2507605A1 (en) 2004-06-10
CN1717515A (en) 2006-01-04

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