EP1567701A1 - Method and device for the uniform bonding of a nonwoven - Google Patents

Method and device for the uniform bonding of a nonwoven

Info

Publication number
EP1567701A1
EP1567701A1 EP03811783A EP03811783A EP1567701A1 EP 1567701 A1 EP1567701 A1 EP 1567701A1 EP 03811783 A EP03811783 A EP 03811783A EP 03811783 A EP03811783 A EP 03811783A EP 1567701 A1 EP1567701 A1 EP 1567701A1
Authority
EP
European Patent Office
Prior art keywords
fleece
width
nonwoven
needling
fibers
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Withdrawn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
EP03811783A
Other languages
German (de)
French (fr)
Inventor
Gerold Fleissner
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.)
Truetzschler Nonwovens GmbH
Original Assignee
Fleissner 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
Priority claimed from DE10316746A external-priority patent/DE10316746A1/en
Application filed by Fleissner GmbH filed Critical Fleissner GmbH
Publication of EP1567701A1 publication Critical patent/EP1567701A1/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Withdrawn legal-status Critical Current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
    • D04H1/00—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres
    • D04H1/40—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties
    • D04H1/44—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties the fleeces or layers being consolidated by mechanical means, e.g. by rolling
    • D04H1/46—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties the fleeces or layers being consolidated by mechanical means, e.g. by rolling by needling or like operations to cause entanglement of fibres
    • D04H1/492—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties the fleeces or layers being consolidated by mechanical means, e.g. by rolling by needling or like operations to cause entanglement of fibres 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
    • D04H1/00—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres
    • D04H1/70—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres characterised by the method of forming fleeces or layers, e.g. reorientation of fibres
    • D04H1/74—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres characterised by the method of forming fleeces or layers, e.g. reorientation of fibres the fibres being orientated, e.g. in parallel (anisotropic fleeces)
    • 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
    • D04H13/00—Other non-woven fabrics
    • 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

Definitions

  • a nonwoven fabric made of staple fibers and / or continuous fibers such as spunbond fibers and / or mixed with natural fibers such as pulp does not have a uniform distribution of the fibers in the longitudinal and transverse directions due to the manufacturing conditions.
  • the fibers are stretched substantially in the longitudinal direction of the fleece, so that in the transverse direction a lower strength after z. B hydrodynamic needling arises.
  • the invention has for its object to find a method of how a uniformly consolidated nonwoven and thus an overall increased consolidated nonwoven can be obtained over the surface in the two directions MD and CD.
  • the fleece is at least partially forced to reorient the fibers before, during and / or after a first hydrodynamic needling and / or a subsequent hydrodynamic needling across the width and then the fleece is subjected to a further water jet treatment.
  • the reorientation of the fibers can arise during lateral stretching, pressing and / or only surface treatments such as brushes or with water jets that are offset or shifted sideways. This gives the fleece a higher overall strength than would be possible without this reorientation of the fibers.
  • This treatment can also be carried out several times in succession. It is important to ensure that the fleece is uniform across the width, e.g. B. is stretched, which occurs in any case when the fleece is fully supported during stretching, brushing or pressing and the forces acting on the fleece attack uniformly across the width of the fleece.
  • Devices for this are known in the textile field for the treatment of fabrics and knitted fabrics.

Landscapes

  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Nonwoven Fabrics (AREA)
  • Treatment Of Fiber Materials (AREA)

Abstract

The invention relates to a discontinuous nonwoven formed by a carder, or other nonwovens formed from filaments. On account of the longitudinally oriented lengths of fibre after, for example, hydrodynamic needle-punching, said nonwovens are stronger in the longitudinal direction than in the transversal direction. This fact can be changed if the pre-bonded nonwoven undergoes a reorientation of the fibres, for example, during a lateral stretching treatment. The fibres already intertwined in the nonwoven are at least partially reoriented, for example, in the transversal direction. In this new position, another hydrodynamic bonding treatment can be carried out, in order to fix the fibres in said new position. In this way, the nonwoven is generally stronger than would be possible without the reorientation of the fibres.

Description

Verfahren und Anlage zur gleichmäßigen Verfestigung eines Faservlieses Process and plant for the uniform consolidation of a nonwoven fabric

Ein Faservlies aus Stapelfasern und/oder Endlosfasern wie auch Spunbondfasem und/oder vermischt mit natürlichen Fasern wie auch Pulp hat aufgrund der Herstellungsbedingungen keine gleichmäßige Verteilung der Fasern in Längs- und Querrichtung. Die Fasern liegen im wesentlichen in Längsrichtung des Vlieses gestreckt, so dass in Querrichtung eine geringere Festigkeit nach z. B einer hydrodynamischen Vernadelung entsteht.A nonwoven fabric made of staple fibers and / or continuous fibers such as spunbond fibers and / or mixed with natural fibers such as pulp does not have a uniform distribution of the fibers in the longitudinal and transverse directions due to the manufacturing conditions. The fibers are stretched substantially in the longitudinal direction of the fleece, so that in the transverse direction a lower strength after z. B hydrodynamic needling arises.

Der Erfindung liegt die Aufgabe zugrunde, ein Verfahren zu finden, wie über die Fläche in den beiden Richtungen MD und CD ein gleichmäßiger verfestigtes Vlies und damit ein insgesamt erhöht verfestigtes Vlies zu erhalten ist.The invention has for its object to find a method of how a uniformly consolidated nonwoven and thus an overall increased consolidated nonwoven can be obtained over the surface in the two directions MD and CD.

Die Lösung dieser Aufgabe wird darin gesehen, dass dem Vlies vor, während und/oder nach einer ersten hydrodynamischen Vernadelung und/oder einer folgenden hydrodynamischen Vernadelung über die Breite zumindest teilweise eine Neuorientierung der Fasern aufgezwungen und dann das Vlies einer weiteren Wasserstrahlbehandlung ausgesetzt wird. Die Neuorientierung der Fasern kann entstehen beim seitlichen Recken, beim Pressen und/oder nur Oberflächenbehandeln wie Bürsten oder mit seitlich schräg versetzt ausgerichteten oder changierenden Wasserstrahlen. Damit erhält das Vlies insgesamt eine höhere Festigkeit als es ohne diese Umorientierung der Fasern möglich wäre.The solution to this problem is seen in that the fleece is at least partially forced to reorient the fibers before, during and / or after a first hydrodynamic needling and / or a subsequent hydrodynamic needling across the width and then the fleece is subjected to a further water jet treatment. The reorientation of the fibers can arise during lateral stretching, pressing and / or only surface treatments such as brushes or with water jets that are offset or shifted sideways. This gives the fleece a higher overall strength than would be possible without this reorientation of the fibers.

Diese Behandlung kann auch mehrfach hintereinander erfolgen. Dabei ist darauf zu achten, dass das Vlies über die Breite gleichmäßig z. B. gereckt wird, was jedenfalls erfolgt, wenn das Vlies beim Recken, Bürsten oder Pressen vollflächig unterstützt ist und die auf das Vlies wirkenden Kräfte überall gleichmäßig über die Breite am Vlies angreifen. Vorrichtungen dazu sind auf dem Textilgebiet zur Behandlung von Geweben und Gewirken bekannt. This treatment can also be carried out several times in succession. It is important to ensure that the fleece is uniform across the width, e.g. B. is stretched, which occurs in any case when the fleece is fully supported during stretching, brushing or pressing and the forces acting on the fleece attack uniformly across the width of the fleece. Devices for this are known in the textile field for the treatment of fabrics and knitted fabrics.

Claims

P a t e n t a n s p r ü c h e : Patent claims: 1. Verfahren zur gleichmäßigen Verfestigung eines Faservlieses aus Stapel- und/oder Endlosfasern wie auch unmittelbar vorher kontinuierlich abgelegten Kunstfasern ggf. vermischt mit natürlichen Fasern wie auch Pulp, das z. B. mittels einer Krempel oder nach dem Luftlegeverfahren und/oder mittels des Spunbond- Verfahrens gebildet ist und dessen Fasern dann mittels der hydrodynamischen Vernadelung miteinander verschlungen werden, indem das Vlies ein- oder beidseitig einer Reihe von Wasserstrahlverfestigungsbehandlungen ausgesetzt wird, dadurch gekennzeichnet, dass dem Vlies vor, während und/oder nach einer ersten hydrodynamischen Vernadelung und/oder einer folgenden hydrodynamischen Vernadelung über die Breite zumindest teilweise eine Neuorientierung der Fasern aufgezwungen und dann das Vlies einer weiteren Wasserstrahlbehandlung ausgesetzt wird.1. Method for uniformly strengthening a nonwoven fabric made of staple and / or continuous fibers as well as synthetic fibers which have been continuously deposited immediately beforehand, optionally mixed with natural fibers and pulp, which, for. B. is formed by means of a card or by the air-laying process and / or by means of the spunbond process and the fibers of which are then intertwined by means of the hydrodynamic needling by the fleece being exposed on one or both sides to a series of hydroentanglement treatments, characterized in that the Nonwoven before, during and / or after a first hydrodynamic needling and / or a subsequent hydrodynamic needling across the width is at least partially forced to reorient the fibers and then the nonwoven is subjected to a further water jet treatment. 2. Verfahren nach Anspruch 1 , dadurch gekennzeichnet, dass das Vlies zur teilweisen Neuorientierung der Fasern über die Breite gereckt wird.2. The method according to claim 1, characterized in that the fleece is stretched across the width for partial reorientation of the fibers. 3. Verfahren nach Anspruch 1 und/oder 2, dadurch gekennzeichnet, dass das Vlies nach einer hydrodynamischen Vernadelung gleichmäßig über die Breite gepresst wird.3. The method according to claim 1 and / or 2, characterized in that the fleece is pressed uniformly across the width after hydrodynamic needling. 4. Verfahren nach Anspruch 1 und/oder 2 und/oder 3, dadurch gekennzeichnet, dass das Vlies nach einer hydrodynamischen Vernadelung gleichmäßig über die Breite in Richtung quer zur Transportrichtung z. B gebürstet wird. 4. The method according to claim 1 and / or 2 and / or 3, characterized in that the fleece after hydrodynamic needling evenly across the width in the direction transverse to the transport direction z. B is brushed. 5. Verfahren nach Anspruch 1 und/oder 2 - 4, dadurch gekennzeichnet, dass das Vlies nach einer hydrodynamischen Vernadelung gleichmäßig über die Breite in Richtung quer zur Transportrichtung mit Wasserstrahlen beaufschlagt wird.5. The method according to claim 1 and / or 2-4, characterized in that the fleece is applied evenly across the width in the direction transverse to the direction of transport with water jets after hydrodynamic needling. 6. Verfahren nach Anspruch 1 und/oder 2 - 5, dadurch gekennzeichnet, dass das Vlies nach einer hydrodynamischen Vernadelung senkrecht zur Vliesebene mit quer zur Transportrichtung changierenden Wasserstrahlen beaufschlagt wird.6. The method according to claim 1 and / or 2 - 5, characterized in that the fleece is acted upon by hydrodynamic needling perpendicular to the fleece plane with water jets transversely to the transport direction. 7. Verfahren nach Anspruch 1 bis 6, dadurch gekennzeichnet, dass das Vlies mehrfach hintereinander hydrodynamisch vernadelt und dann in der Breite gereckt und/oder gepresst und/oder gebürstet und dann wieder vernadelt wird.7. The method according to claim 1 to 6, characterized in that the fleece is needled hydrodynamically several times in succession and then stretched in width and / or pressed and / or brushed and then needled again. 8. Verfahren nach einem der Ansprüche 1 bis 7, dadurch gekennzeichnet, dass der Reck- oder Bürstvorgang bei über die Breite vollständig unterstütztem Vlies gleichmäßig über die Breite des Vlieses durchgeführt wird.8. The method according to any one of claims 1 to 7, characterized in that the stretching or brushing process is carried out uniformly over the width of the fleece with fully supported fleece over the width. 9. Verfahren nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass dem so vorverfestigten Vlies ein anderes Vlies zugeführt und beide miteinander verfestigt werden.9. The method according to any one of the preceding claims, characterized in that another nonwoven is fed to the pre-consolidated nonwoven and both are consolidated. 10. Anlage zur Verfestigung eines Faservlieses zur Durchführung des Verfahrens nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass eine Vorrichtung zur Wasservernadelung kombiniert ist mit einer folgenden Reckvorrichtung, die das vorverfestigte Vlies gleichmäßig über die Breite verzieht.10. Plant for the consolidation of a nonwoven fabric for carrying out the method according to one of the preceding claims, characterized in that a device for water needling is combined with a subsequent stretching device which warps the pre-consolidated nonwoven evenly across the width. 11. Anlage nach Anspruch 10, dadurch gekennzeichnet, dass der Reckvorrichtung wieder eine Wasservernadelungsvorrichtung und so weiter folgt.11. Plant according to claim 10, characterized in that the stretching device is again followed by a water needling device and so on. 12. Anlage zur Verfestigung eines Faservlieses zur Durchführung des Verfahrens nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass eine Vorrichtung zur Wasservernadelung kombiniert ist mit einer folgenden Press- und/oder Bürstvorrichtung und/oder hydrodynamischen Vernadelungsvorrichtung, die das vorverfestigte Vlies gleichmäßig über die Breite in der Faserorientierung seitlich verändert. 12. Plant for the consolidation of a nonwoven fabric for carrying out the method according to one of the preceding claims, characterized in that a device for water needling is combined with a subsequent pressing and / or brushing device and / or hydrodynamic needling device which the pre-consolidated nonwoven uniformly over the width laterally changed in fiber orientation.
EP03811783A 2002-11-27 2003-11-21 Method and device for the uniform bonding of a nonwoven Withdrawn EP1567701A1 (en)

Applications Claiming Priority (5)

Application Number Priority Date Filing Date Title
DE10255505 2002-11-27
DE10255505 2002-11-27
DE10316746A DE10316746A1 (en) 2002-11-27 2003-04-10 Process and plant for the uniform consolidation of a nonwoven fabric
DE10316746 2003-04-10
PCT/EP2003/050861 WO2004048660A1 (en) 2002-11-27 2003-11-21 Method and device for the uniform bonding of a nonwoven

Publications (1)

Publication Number Publication Date
EP1567701A1 true EP1567701A1 (en) 2005-08-31

Family

ID=32395016

Family Applications (1)

Application Number Title Priority Date Filing Date
EP03811783A Withdrawn EP1567701A1 (en) 2002-11-27 2003-11-21 Method and device for the uniform bonding of a nonwoven

Country Status (4)

Country Link
US (1) US20060090315A1 (en)
EP (1) EP1567701A1 (en)
TW (1) TWI254755B (en)
WO (1) WO2004048660A1 (en)

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FR2870263B1 (en) * 2004-05-11 2006-07-07 Rieter Perfojet Sa WIDE NONTISSE AND METHODS AND MANUFACTURING MACHINE
CN100376735C (en) * 2005-04-12 2008-03-26 张水华 Production process of porous high-whitening environment-friendly soft tissue cloth

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Title
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Also Published As

Publication number Publication date
WO2004048660A1 (en) 2004-06-10
TWI254755B (en) 2006-05-11
US20060090315A1 (en) 2006-05-04
TW200426266A (en) 2004-12-01

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