EP1759044B1 - Device for hydrodynamically entangling the fibres of a fibre web - Google Patents

Device for hydrodynamically entangling the fibres of a fibre web Download PDF

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Publication number
EP1759044B1
EP1759044B1 EP05743540A EP05743540A EP1759044B1 EP 1759044 B1 EP1759044 B1 EP 1759044B1 EP 05743540 A EP05743540 A EP 05743540A EP 05743540 A EP05743540 A EP 05743540A EP 1759044 B1 EP1759044 B1 EP 1759044B1
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EP
European Patent Office
Prior art keywords
endless belt
drum
fiber length
hydroentanglement
fiber web
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EP05743540A
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German (de)
French (fr)
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EP1759044A1 (en
Inventor
Thomas Fechter
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Truetzschler Nonwovens GmbH
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Fleissner GmbH
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    • 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
    • D04H17/00—Felting apparatus
    • 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

  • a compacting device is in the EP-A-0 859 076 described. Its object is that the voluminous fleece arriving on an endless belt for water needling is compacted between the needling drum and two belts and at the same time wetted by a first curtain of water from the nozzle beam, whose water jets flow through the endless belts and the fiber web and finally the needling drum.
  • the known device according to EP-A-0 818 568 concerns the task of slowly compressing the fibrous web consisting of loose non-consolidated fibers and also the upstream wetting in the pressed state. This also applies to lighter fleeces, but there is a risk that the still loose fibers of the fiber web to be consolidated are pressed into the needling drum, get caught there and bring about problems in detaching the fiber web after needling. There is a distortion in the fiber web, which is disadvantageous for the strength of the nonwoven fabric.
  • the invention has for its object to find a device with which also a light fleece easily brought to the first needling, wetted there and can be detected by the drum without fiber loss.
  • This device uses this from the EP-A-754 255 known principle that the needling drum is wrapped only by the fiber web and not of an additional endless belt, but there carries this the fleece reciting endless belt the fleece on its top, so it is due to the gravity on the endless belt and the drum must the fiber web of remove the endless belt, which causes the distortion unchanged.
  • the invention provides the following features:
  • the needling drum following a second needling drum with associated nozzle bars in opposite directions, wherein the needling drums are meandered by the fiber web, which can be delivered to a third endless belt for further treatment.
  • a suction is generated at the bottom of the fiber web carrying endless belt by a suction box is arranged above the lower strand of the endless belt, which is set under induced draft.
  • a device of the type according to the invention is shown by way of example in the drawing. It shows in the side view schematically two superimposed, the fiber web meandering leading Vernadelungstrommeln whose upper drum tangentially associated with an endless belt for feeding the fiber web.
  • a compacting water needling device with two needling drums 2, 3 is shown.
  • This unit is normally the first unit of a larger water-needling plant for an unconsolidated fiber web, in which so further not shown needling drums can follow, which can also be wrapped meandering and then with which then the fiber web is still processed on both sides.
  • this unit consists of an endless belt 4, which is deflected over a plurality of rotatably arranged in a holding frame, not shown rollers 5 and kept taut and the lower strand 4 'is tangentially brought to the top of the first needle drum 2.
  • the fibrous web comes from the delivery belt 6, the z. B. may be the discharge belt of a card and the fiber web 8 carries on its upper side.
  • the delivery belt 6 is above the delivery belt 6 of the lower strand 4 'of the endless belt 4, which is arranged in the direction of arrow 7 in parallel to the delivery belt 6.
  • the unbonded fiber web 8 is held on the underside of the lower strand 4 'by means of a suction.
  • the rear guide roller of the endless belt 6 is located in the region of the front guide roller 5 of the Endless belt 4 and the rear guide roller lies behind the surface of the upper needle drum 2.
  • a first suction box 9 holds the fiber web 8 against the underside of the lower strand 4 ', which is sealed against the belt 4.
  • the fiber web 8 is pressed between the endless belt 4 and the drum 2 and at the same time by means of of the across the width of the fiber web 8 extending nozzle beam 10 wet and needled by the tape 4.
  • the discontinued liquid is sucked at least partially below the drum surface by means of a second suction box 2 'which is provided inside the needling drum 2.
  • the now solidified web 8 can then be dried or further treated z.
  • B. perforated or embossed, including a band 14 may be provided with further nozzle beacons 15.
  • the two needling drums 2, 3 are driven in opposite directions and meandered by the fiber web 8, so that the fiber web can be processed on both sides in a simple manner.
  • the needling drum 3 as well as the subsequent needling drum is equipped with one or more nozzle bars and suction boxes.

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  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Nonwoven Fabrics (AREA)
  • Preliminary Treatment Of Fibers (AREA)
  • Glass Compositions (AREA)
  • Ropes Or Cables (AREA)

Abstract

A device is known in which the bulky felt arriving on the top side of an endless belt for water felting is compacted between a felting drum and the belt and at the same time it is wetted by a first water curtain from a nozzle beam, whose water jets first pass through the endless belt and then the fiber web and finally the felting drum. Now, according to the invention, the unconsolidated felt is held against the bottom of an endless belt by means of induced suction and transported, and it is brought up tangentially to a needle felting drum, arranged beneath the endless belt. In this way, the handover of the fiber web from the endless belt to the needle felting drum is accomplished under the influence of gravity.

Description

Die Erfindung bezieht sich auf eine Vorrichtung zum hydrodynamischen Verschlingen zum vorzugsweise bindemittelfreien Verfestigen der Fasern einer Faserbahn aus natürlichen und/oder künstlichen Fasern jeglicher Art, bestehend aus:

  1. a) nur einem die Faserbahn transportierenden ersten Lieferband und einem nachfolgenden Endlosband, das zwischen mindestens zwei Walzen gespannt geführt und umgelenkt ist,
  2. b) einer dem Endlosband zugeordneten ersten Vernadelungstrommel, der vorzugsweise über die Arbeitsbreite zumindest ein Düsenbalken achsparallel direkt zugeordnet ist,
  3. c) zumindest einem Düsenbalken, dessen Wasserstrahlen gegen die Rückseite des Endlosbandes und durch das Endlosband gegen die Faserbahn und gegen die Vernadelungstrommel zumindest zum Nässen desselben gerichtet sind, wobei das Endlosband oberhalb des Lieferbandes und der Vernadelungstrommel tangential an die Vernadelungstrommel herangeführt ist,
  4. d) einer Faserbahn, die allein auf der unteren Außenseite des Untertrums des Endlosbandes gehalten ist,
  5. e) einer Faserbahn, die nach der ersten Vernadelung mit Hilfe zumindest eines Düsenbalkens nach unten auf die Vernadelungstrommel übergeben ist,
  6. f) dem die Faserbahn transportierenden Untertrum des Endlosbandes, dem auf seiner unteren Außenseite zum Halten der Faserbahn ein unter Unterdruck stehender Saugkasten oberhalb des Untertrums des Endlosbandes und der Vernadelungstrommel zugeordnet ist,
  7. g) dem auf der Unterseite die Faserbahn transportierenden Endlosband, dem ein weiteres zwischen Umlenkwalzen gehaltenes, die Faserbahn übergebendes Endlosband vor- und zugeordnet ist, das die Faserbahn auf dem Obertrum transportiert und auf das Untertrum des Endlosbandes abgibt.
The invention relates to a device for hydrodynamic entanglement for preferably binder-free solidification of the fibers of a fiber web of natural and / or artificial fibers of any kind, consisting of:
  1. a) only one fiber conveyor transporting the first delivery belt and a subsequent endless belt, which is guided and deflected between at least two rollers,
  2. b) a first needling drum assigned to the endless belt, which is preferably assigned directly to the axis parallel to at least one nozzle beam over the working width,
  3. c) at least one nozzle bar whose jets of water are directed towards the rear side of the endless belt and through the endless belt against the fiber web and against the needling drum at least for wetting it, wherein the endless belt above the delivery belt and the needling drum is brought tangentially to the needling drum,
  4. d) a fiber web which is held solely on the lower outer side of the lower run of the endless belt,
  5. e) a fiber web, which is transferred to the needling drum after the first needling with the aid of at least one nozzle beam,
  6. f) the fiber web conveying the lower strand of the endless belt, the on its lower outer side for holding the fibrous web under a negative pressure standing suction box is assigned above the lower strand of the endless belt and the needle drum,
  7. g) the on the underside of the fiber web transporting endless belt, which is a further held between guide rollers, the fiber web transferring endless belt before and assigned, which transports the fiber web on the upper strand and delivers to the lower strand of the endless belt.

Eine Kompaktiervorrichtung ist in der EP-A-0 859 076 beschrieben. Sie hat die Aufgabe, dass das auf einem Endlosband zur Wasservernadelung ankommende voluminöse Vlies zwischen der Vernadelungstrommel und zwei Bändern verdichtet und gleichzeitig von einem ersten Wasservorhang aus dem Düsenbalken genässt wird, dessen Wasserstrahlen die Endlosbänder und die Faserbahn und letztlich die Vernadelungstrommel durchströmen.A compacting device is in the EP-A-0 859 076 described. Its object is that the voluminous fleece arriving on an endless belt for water needling is compacted between the needling drum and two belts and at the same time wetted by a first curtain of water from the nozzle beam, whose water jets flow through the endless belts and the fiber web and finally the needling drum.

Gleiches gilt für die Vorrichtung nach der EP-A-0 818 568 , bei der zwei übereinander angeordnete Vernadelungstrommeln, der Verfestigung auf beiden Seiten der Faserbahn dienen.The same applies to the device according to the EP-A-0 818 568 in which two needling drums arranged one above the other serve to solidify on both sides of the fibrous web.

Die bekannte Vorrichtung nach EP-A-0 818 568 betrifft die Aufgabe des langsamen Komprimierens der aus losen untereinander nicht verfestigten Fasern bestehenden Faserbahn und auch der vorgeordneten Benässung im gepressten Zustand. Dies gilt auch für leichtere Vliese, jedoch besteht die Gefahr, dass die noch lockeren Fasern der zu verfestigenden Faserbahn in die Vernadelungstrommel gedrückt werden, dort verhaken und Probleme beim Ablösen der Faserbahn nach der Vernadelung bringen. Es entsteht ein Verzug in der Faserbahn, der für die Festigkeit des Faservlieses von Nachteil ist. Das Problem greift der Gegenstand der WO 2004/046444 auf und schlägt vor, dadurch eine bessere Ablösung der Faserbahn nach dem Vernadeln zu ermöglichen, dass der Düsenbalken derart angeordnet und ausgerichtet ist, dass die Wasserstrahlen des Düsenbalkens die Faserbahn in Transportrichtung der Faserbahn erst hinter der Kompressionslinie oder dem -bereich treffen. Diese Maßnahme reinigt das Endlosband von den aufgenommenen Fasern unmittelbar nach oder bei dem Vernadeln. Dort umschlingt jedoch auch die Vernadelungstrommel ein zweites Endlosband, das den Widerstand beim Vernadeln auf der Trommel erhöht, aber die Faserbahn spannungsfrei weitertransportiert. In manchen Fällen ist ein solches zweites, jetzt die Trommel umschlingendes Endlosband nicht erwünscht, dann ist aber der Transport der Faserbahn nicht gewährleistet.The known device according to EP-A-0 818 568 concerns the task of slowly compressing the fibrous web consisting of loose non-consolidated fibers and also the upstream wetting in the pressed state. This also applies to lighter fleeces, but there is a risk that the still loose fibers of the fiber web to be consolidated are pressed into the needling drum, get caught there and bring about problems in detaching the fiber web after needling. There is a distortion in the fiber web, which is disadvantageous for the strength of the nonwoven fabric. The problem attacks the subject of WO 2004/046444 In this way, a better detachment of the fiber web after needling is proposed, in that the nozzle bar is arranged and aligned in such a way that the water jets of the nozzle bar strike the fiber web in the transport direction of the fiber web only after the compression line or region. This measure cleans the endless belt of the fibers taken immediately after or at the needlepunching. There, however, the needling drum wraps around a second endless belt, which increases the resistance during needling on the drum, but further transports the fiber web tension-free. In some cases, such a second, now the drum looping endless belt is not desirable, but then the transport of the fiber web is not guaranteed.

Ausgehend von der anfangs genannten Vorrichtung WO 2004/033780 A1 liegt der Erfindung die Aufgabe zugrunde, eine Vorrichtung zu finden, mit der auch ein leichtes Vlies problemlos an die erste Vernadelung herangeführt, dort benässt und von der Trommel ohne Faserverlust erfasst werden kann.Starting from the initially mentioned device WO 2004/033780 A1 The invention has for its object to find a device with which also a light fleece easily brought to the first needling, wetted there and can be detected by the drum without fiber loss.

Diese Vorrichtung verwendet das aus der EP-A-754 255 bekannte Prinzip, dass die Vernadelungstrommel nur von der Faserbahn umschlungen ist und nicht von einem zusätzlichen Endlosband, jedoch trägt dort dieses das Vlies vortragende Endlosband das Vlies auf seiner Oberseite, es liegt also aufgrund der Erdschwere auf dem Endlosband auf und die Trommel muss die Faserbahn von dem Endlosband abziehen, was unverändert die Verzüge bewirkt.This device uses this from the EP-A-754 255 known principle that the needling drum is wrapped only by the fiber web and not of an additional endless belt, but there carries this the fleece reciting endless belt the fleece on its top, so it is due to the gravity on the endless belt and the drum must the fiber web of remove the endless belt, which causes the distortion unchanged.

Zur Lösung der gestellten Aufgabe sieht die Erfindung folgende Merkmale vor:To achieve the object, the invention provides the following features:

Dass der Vernadelungstrommel eine zweite Vernadelungstrommel mit zugeordneten Düsenbalken gegenläufig nachfolgt, wobei die Vernadelungstrommeln mäanderförmig von der Faserbahn umschlungen sind, die zur Weiterbehandlung an ein drittes Endlosband abgegeben werden kann.The needling drum following a second needling drum with associated nozzle bars in opposite directions, wherein the needling drums are meandered by the fiber web, which can be delivered to a third endless belt for further treatment.

Hierdurch wird der Impuls des Düsenbalkens zur Ablösung des Vlieses von dem das Vlies auf seiner Unterseite herantragenden Endlosband durch die stets wirksame Erdschwere unterstützt. Dies hat eine verzugsfreie Ablösung des Vlieses von dem Endlosband zur Folge. Mit Vorzug ist an der Unterseite des die Faserbahn tragenden Endlosbandes ein Saugzug erzeugt, indem oberhalb des Untertrums des Endlosbandes ein Saugkasten angeordnet ist, der unter Saugzug gesetzt ist.As a result, the momentum of the nozzle bar for detaching the nonwoven from the nonwoven on its underside approaching endless belt is supported by the always effective gravity. This results in a distortion-free detachment of the web from the endless belt. With preference, a suction is generated at the bottom of the fiber web carrying endless belt by a suction box is arranged above the lower strand of the endless belt, which is set under induced draft.

Eine Vorrichtung der erfindungsgemäßen Art ist in der Zeichnung beispielhaft dargestellt. Es zeigt in der Seitenansicht schematisch zwei übereinander angeordnete, die Faserbahn mäanderförmig führende Vernadelungstrommeln, deren oberen Trommel ein Endlosband zur Heranführung der Faserbahn tangential zugeordnet ist.A device of the type according to the invention is shown by way of example in the drawing. It shows in the side view schematically two superimposed, the fiber web meandering leading Vernadelungstrommeln whose upper drum tangentially associated with an endless belt for feeding the fiber web.

In einem Rahmengestell 1 ist eine Kompaktier-Wasservernadelungseinrichtung mit zwei Vernadelungstrommeln 2, 3 dargestellt. Diese Einheit ist normalerweise die erste Einheit einer größeren Wasservernadelungsanlage für eine unverfestigte Faserbahn, bei der sich also weitere nicht dargestellte Vernadelungstrommeln anschließen können, die auch mäanderförmig umschlungen sein können und womit dann die Faserbahn weiterhin beidseitig bearbeitet wird.In a frame 1, a compacting water needling device with two needling drums 2, 3 is shown. This unit is normally the first unit of a larger water-needling plant for an unconsolidated fiber web, in which so further not shown needling drums can follow, which can also be wrapped meandering and then with which then the fiber web is still processed on both sides.

Grundsätzlich besteht diese Einheit aus einem Endlosband 4, das über mehrere in einem nicht dargestellten Haltegestell drehbar angeordnete Walzen 5 umgelenkt und gespannt gehalten ist und dessen Untertrum 4' tangential an die Oberseite der ersten Vernadelungstrommel 2 herangeführt ist. Die Faserbahn kommt von dem Lieferband 6, das z. B. das Auslaufband einer Karde sein kann und die Faserbahn 8 auf seiner Oberseite trägt. Auf diesem Endlosband 6 läuft in Richtung eines Pfeils 7 eine zu vernadelnde zunächst voluminösere Faserbahn 8. Am Ende des Lieferbandes 6 befindet sich oberhalb des Lieferbandes 6 der Untertrum 4' des Endlosbandes 4, das in Richtung des Pfeils 7 gleichlaufend zum Lieferband 6 angeordnet ist. Die unverfestigte Faserbahn 8 wird an der Unterseite des Untertrums 4' mittels eines Saugzugs gehalten. Dieser wirkt über die Länge des Untertrums 4' des Endlosbandes bis zur Vernadelungstrommel 2. Wie aus der Zeichnung hervorgeht, liegt der Untertrum oberhalb der Umlenkwalze des Endlosbandes 6 und der Vernadelungstrommel 2. Die hintere Umlenkwalze des Endlosbandes 6 liegt im Bereich der vorderen Umlenkwalze 5 des Endlosbandes 4 und die hintere Umlenkwalze liegt hinter der Oberfläche der oberen Vernadelungstrommel 2. Ein erster Saugkasten 9 hält die Faserbahn 8 gegen die Unterseite des Untertrums 4', der gegen das Band 4 abgedichtet ist. Am Ende des Saugkastens 9 wird die Faserbahn 8 zwischen dem Endlosband 4 und der Trommel 2 gepresst und gleichzeitig mittels des quer über die Breite der Faserbahn 8 sich erstreckenden Düsenbalkens 10 genässt und durch das Band 4 vernadelt. Die aufgegebene Flüssigkeit wird zumindest teilweise unterhalb der Trommeloberfläche mittels eines zweiten Saugkastens 2' abgesaugt, der innerhalb der Vernadelungstrommel 2 vorgesehen ist.Basically, this unit consists of an endless belt 4, which is deflected over a plurality of rotatably arranged in a holding frame, not shown rollers 5 and kept taut and the lower strand 4 'is tangentially brought to the top of the first needle drum 2. The fibrous web comes from the delivery belt 6, the z. B. may be the discharge belt of a card and the fiber web 8 carries on its upper side. At the end of the delivery belt 6 is above the delivery belt 6 of the lower strand 4 'of the endless belt 4, which is arranged in the direction of arrow 7 in parallel to the delivery belt 6. The unbonded fiber web 8 is held on the underside of the lower strand 4 'by means of a suction. As can be seen from the drawing, the Untertrum above the guide roller of the endless belt 6 and the needling drum 2. The rear guide roller of the endless belt 6 is located in the region of the front guide roller 5 of the Endless belt 4 and the rear guide roller lies behind the surface of the upper needle drum 2. A first suction box 9 holds the fiber web 8 against the underside of the lower strand 4 ', which is sealed against the belt 4. At the end of the suction box 9, the fiber web 8 is pressed between the endless belt 4 and the drum 2 and at the same time by means of of the across the width of the fiber web 8 extending nozzle beam 10 wet and needled by the tape 4. The discontinued liquid is sucked at least partially below the drum surface by means of a second suction box 2 'which is provided inside the needling drum 2.

Wesentlich ist jetzt, dass die allein ohne ein zweites Endlosband auf der Trommel 2 liegende Faserbahn 8 nach unten in Richtung eines Pfeils 11 abgeführt wird. Die Wasserstrahlen aus dem Düsenbalken 10 wirken von oben nach unten. Von oben nach unten also in Richtung der Erdschwere wird auch die Übergabe der Faserbahn 8 auf die Trommel 2 bewirkt. Diese unterstützt somit die verlustfreie Übergabe der noch nicht verfestigten Faserbahn oder des Vlieses 8 auf die erste Vernadelungstrommel 2, der anschließend zwei voll zur Vernadelung arbeitsfähige Düsenbalken 12, 13 zugeordnet sind. Das gleiche gilt für die zweite Vernadelungstrommel 3.It is essential now that the fiber web 8 lying alone on the drum 2 without a second endless belt is led down in the direction of an arrow 11. The water jets from the nozzle bar 10 act from top to bottom. From top to bottom, ie in the direction of earth gravity, the transfer of the fibrous web 8 to the drum 2 is also effected. This thus supports the lossless transfer of not yet solidified fiber web or web 8 on the first needle drum 2, which are then assigned two fully workable for needling needle bar 12, 13. The same applies to the second needle drum 3.

Das nunmehr verfestigte Vlies 8 kann anschließend getrocknet oder weiterbehandelt z. B. perforiert oder geprägt werden, wozu ein Band 14 mit weiteren Düsenbaken 15 vorgesehen sein kann.The now solidified web 8 can then be dried or further treated z. B. perforated or embossed, including a band 14 may be provided with further nozzle beacons 15.

Wie sich aus der Richtung des Pfeils 11 gemäß der Zeichnung ergibt, werden die beiden Vernadelungstrommeln 2, 3 gegenläufig angetrieben und von der Faserbahn 8 mäanderförmig umschlungen, so dass die Faserbahn auf einfache Weise beidseitig bearbeitet werden kann. Hierzu ist die Vernadelungstrommel 3 wie auch die nachfolgende Vernadelungstrommel mit einem oder mehreren Düsenbalken und Saugkästen ausgestattet. As can be seen from the direction of the arrow 11 according to the drawing, the two needling drums 2, 3 are driven in opposite directions and meandered by the fiber web 8, so that the fiber web can be processed on both sides in a simple manner. For this purpose, the needling drum 3 as well as the subsequent needling drum is equipped with one or more nozzle bars and suction boxes.

Claims (1)

  1. Device for hydrodynamic entanglement for preferably binder-free bonding of fibers in a fiber length (8) made of natural and/or synthetic fibers of any kind, consisting of:
    a) only one first feeding conveyor (6) transporting the fiber length (8) and a subsequent endless belt (4), which is guided in tensioned condition and deflected between at least two rollers (5);
    b) a first hydroentanglement drum (2) assigned to the endless belt (4), which, preferably across the working width, is directly combined with at least one jet head (12, 13) arranged in parallel with its axis;
    c) at least one jet head (10) whose water jets are directed against the back of the endless belt (4) and through the endless belt (4) against the fiber length (8) and against the hydroentanglement drum (2) at least for wetting the endless belt (4) while the endless belt (4) approaches the feeding conveyor (6) and the hydroentanglement drum (2) from above tangentially to the hydroentanglement drum (2);
    d) a fiber length (8) which is kept solely at the lower exterior of the bottom part (4') of the endless belt (4);
    e) a fiber length (8) which is passed downward onto the hydroentanglement drum (2) after the first hydroentanglement step by means of at least one jet head (10);
    f) the bottom part (4') of the endless belt (4) transporting the fiber length (8) to whose lower exterior holding the fiber length (8) is assigned a suction box (9) operated under vacuum which is situated above the bottom part (4') of the endless belt (6) and the hydroentanglement drum (2);
    g) the endless belt (4) transporting at its bottom side the fiber length (8), which is preceded by and combined with another endless belt held between deflector rollers and passing on the fiber length (8) which transports the fiber length (8) on its top part and passes it on to the bottom part (4') of the endless belt (4).
    characterized in that
    the hydroentanglement drum (2) is combined with a counter-rotating second hydroentanglement drum (3) with assigned jet heads with the fiber length (8) meandering around the hydroentanglement drums before it can be passed on to a third endless belt (14) for further processing.
EP05743540A 2004-06-23 2005-05-27 Device for hydrodynamically entangling the fibres of a fibre web Active EP1759044B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102004030413A DE102004030413A1 (en) 2004-06-23 2004-06-23 Device for hydrodynamically entangling the fibers of a fibrous web
PCT/EP2005/005697 WO2006000282A1 (en) 2004-06-23 2005-05-27 Device for hydrodynamically entangling the fibres of a fibre web

Publications (2)

Publication Number Publication Date
EP1759044A1 EP1759044A1 (en) 2007-03-07
EP1759044B1 true EP1759044B1 (en) 2008-07-09

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US (1) US7631406B2 (en)
EP (1) EP1759044B1 (en)
JP (1) JP4566238B2 (en)
CN (1) CN100510222C (en)
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JP4566238B2 (en) 2010-10-20
CN100510222C (en) 2009-07-08
CN1957128A (en) 2007-05-02
ATE400683T1 (en) 2008-07-15
US20080307619A1 (en) 2008-12-18
DE502005004654D1 (en) 2008-08-21
ES2308493T3 (en) 2008-12-01
EP1759044A1 (en) 2007-03-07
WO2006000282A1 (en) 2006-01-05
JP2008503658A (en) 2008-02-07
US7631406B2 (en) 2009-12-15

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