EP0751249A2 - Method and apparatus for consolidating a fibrous fleece - Google Patents

Method and apparatus for consolidating a fibrous fleece Download PDF

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Publication number
EP0751249A2
EP0751249A2 EP96110029A EP96110029A EP0751249A2 EP 0751249 A2 EP0751249 A2 EP 0751249A2 EP 96110029 A EP96110029 A EP 96110029A EP 96110029 A EP96110029 A EP 96110029A EP 0751249 A2 EP0751249 A2 EP 0751249A2
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EP
European Patent Office
Prior art keywords
fibers
fleece
nonwoven
water
carrier
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
EP96110029A
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German (de)
French (fr)
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EP0751249A3 (en
EP0751249B1 (en
Inventor
Gerold Fleissner
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Truetzschler Nonwovens GmbH
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Fleissner GmbH
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Application filed by Fleissner GmbH filed Critical Fleissner GmbH
Publication of EP0751249A2 publication Critical patent/EP0751249A2/en
Publication of EP0751249A3 publication Critical patent/EP0751249A3/en
Application granted granted Critical
Publication of EP0751249B1 publication Critical patent/EP0751249B1/en
Anticipated expiration legal-status Critical
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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
    • D04H18/00—Needling machines
    • D04H18/04—Needling machines with water jets

Definitions

  • the invention relates to a method for consolidating a nonwoven fabric made of artificial staple fibers, such as polyester, polyethylene or polypropylene fibers, and / or natural fibers, which are up to 10 mm thick and more from pure synthetic fibers without binding fibers, such as bicomponent or special Melt fibers, and without binders or also alone or mixed with natural fibers,
  • artificial staple fibers such as polyester, polyethylene or polypropylene fibers, and / or natural fibers
  • Carded fiber nonwovens are made from a wide variety of fibers. In general, they have the advantage that the short fibers in the finished nonwoven are confused and therefore give the nonwoven better strength in all directions of pull.
  • nonwovens made from continuous fibers which, after the fibers have been produced, immediately form a spunbonded nonwoven. B. stored on an endless belt. The fibers laid loosely in the nonwoven supplied by the carding machine and also those of a spunbonded nonwoven must be connected to one another in order to produce a strength that is satisfactory in practice. For this purpose, it is known to mechanically needle the fleece. Due to this essentially discontinuous and thus slow consolidation process, however, the volume is significantly reduced, so that such a mechanically consolidated needle felt is not usable for many possible uses. In addition, thin nonwovens cannot be needle-punched mechanically.
  • the invention is based on the object of developing a method for producing a consolidated, further voluminous nonwoven, such as carded fiber nonwoven, in which no additional binding chemicals or binding fibers are required for the consolidation and yet the required strength in the nonwoven and also the connection with the carrier nonwoven is achieved can be.
  • B. a card or aerodynamically produced fleece on a previously consolidated fleece such.
  • the staple fiber fleece - as it is supplied by the card or aerodynamics - loses volume when needling with this water pressure, but only insignificantly little for this purpose.
  • the fibers become matted by the impact of the water jets with the water pressure in such a way that a sufficiently strengthened fleece is supplied by the water needling machine and at the same time this staple fiber fleece is mechanically connected to the carrier fleece, that is to say also needled to the carrier fleece.
  • This solidification process is particularly inexpensive because two actual product manufacturing steps that are to be carried out separately are combined in one.
  • the staple fiber nonwoven is consolidated, it is simultaneously connected to the spunbonded nonwoven, which can of course also be another nonwoven product.
  • the treatment can also be seen the other way around, namely when the staple fiber fleece is connected to the carrier fleece, the staple fiber fleece is simultaneously consolidated without losing its intended volume.

Abstract

A process is for consolidating a nonwoven consisting of synthetic staple fibres (e.g. polyester, polyethylene or polypropylene fibres) and/or of natural fibres. The nonwoven is up to 10 mm thick and the process involves laying the nonwoven, which is produced on a card or aerodynamically, on a previously consolidated web. The nonwoven is then joined with the support web in a continuous treatment process by means of water needling with a water pressure of at least 100 (pref. 180) bar.

Description

Die Erfindung bezieht sich auf ein Verfahren zur Verfestigung eines Faservlieses aus künstlichen Stapelfasern, wie Polyester- Polyätylen- oder Polypropylenfasern, und/oder Naturfasern, das in einer Dicke von bis zu 10 mm und mehr aus reinen Chemiefasern ohne Bindefasern, wie Bikomponenten- oder speziellen Schmelzfasern, und ohne Bindemitteln oder auch allein oder vermischt mit Naturfasern hergestellt wird,The invention relates to a method for consolidating a nonwoven fabric made of artificial staple fibers, such as polyester, polyethylene or polypropylene fibers, and / or natural fibers, which are up to 10 mm thick and more from pure synthetic fibers without binding fibers, such as bicomponent or special Melt fibers, and without binders or also alone or mixed with natural fibers,

Krempelfaservliese werden aus Fasern der unterschiedlichsten Art hergestellt. Ganz allgemein haben sie den Vorteil, daß die Kurzfasern im fertigen Vlies wirr durcheinander liegen und deshalb dem Vlies eine bessere Festigkeit in allen Zugrichtungen verleihen. Daneben gibt es Vliese aus Endlosfasern, die nach der Herstellung der Fasern unmittelbar zu einem Spinnvlies z. B. auf ein Endlosband abgelegt werden. Die im von der Krempelmaschine gelieferten Vlies locker verlegten Fasern und auch die eines Spinnvlieses müssen aber zur Herstellung einer in der Praxis befriedigenden Festigkeit miteinander verbunden werden. Dazu ist es bekannt, das Vlies mechanisch zu vernadeln. Durch diesen im Grunde diskontinuierlichen und damit langsamen Verfestigungsvorgang wird das Volumen aber wesentlich vermindert, so daß ein solches mechanisch verfestigtes Nadelvlies für so manche Verwendungsmöglichkeiten nicht brauchbar ist. Außerdem sind dünne Vliese mechnisch gar nicht zu vernadeln.Carded fiber nonwovens are made from a wide variety of fibers. In general, they have the advantage that the short fibers in the finished nonwoven are confused and therefore give the nonwoven better strength in all directions of pull. In addition, there are nonwovens made from continuous fibers, which, after the fibers have been produced, immediately form a spunbonded nonwoven. B. stored on an endless belt. The fibers laid loosely in the nonwoven supplied by the carding machine and also those of a spunbonded nonwoven must be connected to one another in order to produce a strength that is satisfactory in practice. For this purpose, it is known to mechanically needle the fleece. Due to this essentially discontinuous and thus slow consolidation process, however, the volume is significantly reduced, so that such a mechanically consolidated needle felt is not usable for many possible uses. In addition, thin nonwovens cannot be needle-punched mechanically.

Es ist weiterhin bekannt, den Fasern Bindemittel beizugeben, z. B. flüssig durch Aufsprühen oder mittels Schaumimprägnierung. Der Nachteil eines solchen Vlieses ist nicht nur die zusätzlich notwendige teure Chemikalie, die nur mit einer gewissen Umweltbelastung hergestellt werden kann, sondern auch die schlechtere Recyclfähigkeit.It is also known to add binders to the fibers, e.g. B. liquid by spraying or by means of foam impregnation. The disadvantage of such a fleece is not only the additionally required expensive chemical, which can only be produced with a certain environmental impact, but also the poorer recyclability.

Weiterhin ist es bekannt, den Vliesen Fasern aus niedriger schmelzenden Chemiefasern wie auch Bikomponentenfasern beizumischen, die dann durch Wärmeeinwirkung zumindest angeschmolzen werden, damit sie mit den benachbarten Fasern des Vlieses verkleben. Hierbei sind die teuren Bindefasern und der zusätzlich notwendige Energieaufwand beim Erhitzen bis auf die Schmelztemperatur der Bindefasern von Nachteil.Furthermore, it is known to add fibers of lower melting chemical fibers as well as bicomponent fibers to the nonwovens, which are then at least melted by the action of heat so that they stick to the neighboring fibers of the nonwoven. The expensive binding fibers and the additional energy required when heating up to the melting temperature of the binding fibers are disadvantageous.

Es ist weiterhin bekannt, Vliese der genannten Art mittels Wasser zu vernadeln. Die Wasservernadelung hat grundsätzlich den Vorteil, daß es kontinuierlich erfolgt, also höhere Produktionsgeschwindigkeiten möglich sind.It is also known to needle needles of the type mentioned by means of water. Basically, water needling has the advantage that it takes place continuously, so higher production speeds are possible.

Für Hygieneprodukte ist es bekannt, z. B. für Windeln mehrere Vliesarten übereinander zu legen. So ist es üblich, unter einem Spinnvlies, das mit der Haut in Berührung kommt, eine Zellstoffschicht als Docht- bzw. Flüssigkeits-Vergleichmäßigungselement zu legen. An dieses schließt sich dann ein Trenntissue und schließlich für die aufzufangende Körperflüssigkeit ein Superabsorbent SAP an, das nach außen letzlich durch eine flüssigkeitundurchlässige Schicht gehalten ist. Um die Windel od. dgl. dünner und evt. billiger herstellen zu können, ist es bekannt, die Zellstoffschicht durch ein Stapelfaservlies aus reinen Chemiefasern zu ersetzen, da dieses ebenfals gute Dochteigenschaften hat.For hygiene products it is known, e.g. B. for diapers to put several types of fleece on top of each other. For example, it is customary to place a layer of cellulose under a spunbonded fabric that comes into contact with the skin as a wick or liquid equalization element. This is followed by a separation tissue and finally a superabsorbent SAP for the body fluid to be collected, which is ultimately held on the outside by a liquid-impermeable layer. In order to be able to manufacture the diaper or the like more thinly and possibly more cheaply, it is known to replace the cellulose layer by a staple fiber fleece made of pure chemical fibers, since this also has good wicking properties.

Aufwendig ist nur die Verfestigung dieser Chemiefaservliese und insbesondere dann noch die Verbindung des verfestigten Spinnvlieses mit dem verfestigten Stapelfaservlies. Es ist möglich durch beigemischte niedriger schmelzende Chemiefasern, durch Bikomponentenfasern oder durch zusätzliche Bindemittel eine Verfestigung und auch Verbindung der beiden Vliese zu bewirken. Die offensichtlichen Nachteile dieser Verfestigungsmethoden aber sind oben erläutert.Only the consolidation of these man-made nonwovens and in particular then the connection of the solidified spun-bonded nonwoven to the consolidated staple-fiber nonwoven is expensive. It is possible to mix and bond the two nonwovens by adding lower melting chemical fibers, bicomponent fibers or additional binders. The obvious disadvantages of these solidification methods are explained above.

Der Erfindung liegt die Aufgabe zugrunde, ein Verfahren zur Herstellung eines verfestigten, weiterhin voluminösen Vlieses, wie Krempelfaservlies, zu entwickeln, bei dem zur Verfestigung keine zusätzlichen Bindechemikalien oder Bindefasern notwendig sind und dennoch die erforderliche Festigkeit im Vlies und auch die Verbindung mit dem Trägervlies erzielt werden kann.The invention is based on the object of developing a method for producing a consolidated, further voluminous nonwoven, such as carded fiber nonwoven, in which no additional binding chemicals or binding fibers are required for the consolidation and yet the required strength in the nonwoven and also the connection with the carrier nonwoven is achieved can be.

Ausgehend von dem Verfahren anfangs genannter Art, wird die Lösung dieser Aufgabe darin gesehen, daß das auf z. B. einer Krempel oder aerodynamisch hergestellte Vlies auf ein vorher verfestigtes Vlies wie z. B. Spinnvlies aus Endlosfasern als Trägervlies abgelegt und in einem kontinuierlichen Behandlungsverfahren mittels einer Wasservernadelung mit einem Wasserdruck von mindestens 100, vorzugsweise 180 bar mit dem Trägervlies verbunden und dabei gleichzeitig verfestigt wird.Based on the method initially mentioned, the solution to this problem is seen in the fact that on z. B. a card or aerodynamically produced fleece on a previously consolidated fleece such. B. spunbond made of continuous fibers as a carrier fleece and connected in a continuous treatment process by means of water needling with a water pressure of at least 100, preferably 180 bar with the carrier fleece and is simultaneously consolidated.

Es hat sich überraschend gezeigt, daß das Stapelfaservlies - so wie es von der Krempel oder von einer Aerodynamik geliefert wird - zwar beim Wasservernadeln mit diesem Wasserdruck an Volumen verliert, aber für diesen Verwendungszweck nur unbedeutend wenig. Jedenfalls verfilzen die Fasern durch das Auftreffen der Wasserstrahlen mit dem Wasserdruck derart, daß ein ausreichend verfestigtes Vlies von der Wasservernadelungsmaschine geliefert wird und gleichzeitig dieses Stapelfaservlies mit dem Trägervlies mechanisch verbunden, also mit dem Trägervlies auch vernadelt ist. Dieses Verfestigungsverfahren ist besonders preiswert, weil zwei eigentliche getrennt vorzunehmende Produkt-Herstellungsschritte in einem vereinigt werden. Bei der Verfestigung des Stapelfaservlieses erfolgt gleichzeitig die Verbindung mit dem Spinnvlies, das natürlich auch ein anderes Vliesprodukt sein kann.It has surprisingly been found that the staple fiber fleece - as it is supplied by the card or aerodynamics - loses volume when needling with this water pressure, but only insignificantly little for this purpose. In any case, the fibers become matted by the impact of the water jets with the water pressure in such a way that a sufficiently strengthened fleece is supplied by the water needling machine and at the same time this staple fiber fleece is mechanically connected to the carrier fleece, that is to say also needled to the carrier fleece. This solidification process is particularly inexpensive because two actual product manufacturing steps that are to be carried out separately are combined in one. When the staple fiber nonwoven is consolidated, it is simultaneously connected to the spunbonded nonwoven, which can of course also be another nonwoven product.

Die Behandlung kann auch umgekehrt gesehen werden, nämlich bei der Verbindung des Stapelfaservlieses mit dem Trägervlies erfolgt gleichzeitig die notwendige Verfestigung des Stapelfaservlieses, ohne daß es sein bestimmungsgemäßes Volumen verliert.The treatment can also be seen the other way around, namely when the staple fiber fleece is connected to the carrier fleece, the staple fiber fleece is simultaneously consolidated without losing its intended volume.

Zur Verbindung der Vliese genügt nur eine Druckstufe mit einem Düsenbalken, in dem z. B. 20 Löcher/inch eingebracht sind.To connect the nonwovens, only one pressure stage with a nozzle bar is sufficient, in which, for. B. 20 holes / inch are introduced.

Claims (3)

Verfahren zur Verfestigung eines Faservlieses aus künstlichen Stapelfasern, wie Polyester- Polyätylen- oder Polypropylenfasern, und/oder Naturfasern, das in einer Dicke von bis zu 10 mm und mehr aus reinen Chemiefasern ohne Bindefasern, wie Bikomponenten- oder speziellen Schmelzfasern, und ohne Bindemitteln oder auch allein oder vermischt mit Naturfasern hergestellt wird, dadurch gekennzeichnet, daß das auf z. B. einer Krempel oder aerodynamisch hergestellte Vlies auf ein vorher verfestigtes Vlies wie z. B. Spinnvlies aus Endlosfasern als Trägervlies abgelegt und in einem kontinuierlichen Behandlungsverfahren mittels einer Wasservernadelung mit einem Wasserdruck von mindestens 100, vorzugsweise 180 bar mit dem Trägervlies verbunden und dabei gleichzeitig verfestigt wird.Process for the consolidation of a nonwoven fabric made of artificial staple fibers, such as polyester, polyethylene or polypropylene fibers, and / or natural fibers, which are up to 10 mm thick and more from pure man-made fibers without binding fibers, such as bicomponent or special melt fibers, and without binders or is also produced alone or mixed with natural fibers, characterized in that the z. B. a card or aerodynamically produced fleece on a previously consolidated fleece such. B. spunbond made of continuous fibers as a carrier fleece and connected in a continuous treatment process by means of water needling with a water pressure of at least 100, preferably 180 bar with the carrier fleece and is simultaneously consolidated. Verfahren nach Anspruch 1, dadurch gekennzeichnet, daß die Wasserstrahlen der Wasservernadelung durch das Stapelfaservlies in Richtung des Trägervlieses wirksam werden.Method according to claim 1, characterized in that the water jets of the water needling through the staple fiber fleece become effective in the direction of the carrier fleece. Vorrichtung zur Durchführung des Verfahrens nach einem der Ansprüche 1 oder 2, gekennzeichnet durch nur eine Wasservernadelungsstufe, deren Löcheranzahl auf 20 Löcher/inch beschränkt ist.Device for carrying out the method according to one of claims 1 or 2, characterized by only one water needling stage, the number of holes of which is limited to 20 holes / inch.
EP96110029A 1995-06-27 1996-06-21 Method and apparatus for consolidating a fibrous fleece Revoked EP0751249B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19522763 1995-06-27
DE19522763A DE19522763A1 (en) 1995-06-27 1995-06-27 Method and device for consolidating a nonwoven fabric

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EP0751249A2 true EP0751249A2 (en) 1997-01-02
EP0751249A3 EP0751249A3 (en) 2000-06-07
EP0751249B1 EP0751249B1 (en) 2003-10-22

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EP96110029A Revoked EP0751249B1 (en) 1995-06-27 1996-06-21 Method and apparatus for consolidating a fibrous fleece

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US (1) US5701643A (en)
EP (1) EP0751249B1 (en)
DE (2) DE19522763A1 (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2002068744A2 (en) * 2001-02-07 2002-09-06 Fleissner Gmbh & Co. Maschinenfabrik Water-needled, composite nonwoven consisting of staple fibres and continuous filaments and method for producing the same
WO2007077214A1 (en) * 2006-01-04 2007-07-12 Johnson & Johnson Gmbh Laminated acquisition and distribution layer structure for absorbent hygiene products and method for producing the same
WO2013092978A1 (en) * 2011-12-22 2013-06-27 Bayerische Motoren Werke Aktiengesellschaft Interior component for a vehicle
WO2015055177A1 (en) * 2013-10-18 2015-04-23 Ascania Nonwoven Germany Gmbh Voluminous nonwoven composite and method for producing same

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EP0896080B1 (en) * 1997-08-06 2003-09-10 Fleissner GmbH & Co. Maschinenfabrik Process of making a voluminous nonwoven composite fabric, fabric and apparatus for manufacturing the fabric accordingly
DE19828118A1 (en) * 1998-06-24 1999-12-30 Fleissner Maschf Gmbh Co Device with a nozzle bar for generating liquid jets for the jet interlacing of fibers on a textile web
FR2827313B1 (en) * 2001-07-10 2004-03-12 Rieter Perfojet NONWOVEN COMPRISING A CONTINUOUS FILAMENT TABLECLOTH, MANUFACTURING METHOD THEREOF AND APPLICATION THEREOF AS WIPING RAG
FR2836161B1 (en) * 2002-02-18 2004-04-30 Jacob Holm France MULTI-LAYERED NON-WOVEN MATERIAL OR VEIL HAVING A ROUGH SIDE AND A SOFT SIDE
WO2004083511A1 (en) * 2003-02-19 2004-09-30 Jacob Holm Industries France Sas Non-woven fleece having one rough side and one soft absorbent surface
EP3162502A1 (en) * 2015-10-28 2017-05-03 VSM. Vereinigte Schmirgel- Und Maschinen-Fabriken AG Non-woven abrasive and method for its manufacture
DK3205755T3 (en) * 2016-02-10 2020-03-23 Sanko Tekstil Isletmeleri San Ve Tic As FLEECE MATERIAL AND PROCEDURE FOR PREPARING IT
US11021814B2 (en) * 2016-02-10 2021-06-01 Sanko Tekstil Isletmeleri San. Ve Tic. A.S. Fleece fabric and method for producing the same
EP3943055A1 (en) * 2020-07-24 2022-01-26 Sandler AG Absorbent core sleeve for superabsorbent absorbent cores of sanitary articles

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US4069563A (en) * 1976-04-02 1978-01-24 E. I. Du Pont De Nemours And Company Process for making nonwoven fabric
EP0308320A2 (en) * 1987-09-15 1989-03-22 Fiberweb North America, Inc. High strength nonwoven fabric
EP0333211A2 (en) * 1988-03-18 1989-09-20 Kimberly-Clark Corporation Composite nonwoven non-elastic web material and method of formation thereof
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US5328759A (en) * 1991-11-01 1994-07-12 Kimberly-Clark Corporation Process for making a hydraulically needled superabsorbent composite material and article thereof

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US4069563A (en) * 1976-04-02 1978-01-24 E. I. Du Pont De Nemours And Company Process for making nonwoven fabric
EP0308320A2 (en) * 1987-09-15 1989-03-22 Fiberweb North America, Inc. High strength nonwoven fabric
EP0333211A2 (en) * 1988-03-18 1989-09-20 Kimberly-Clark Corporation Composite nonwoven non-elastic web material and method of formation thereof
EP0418493A1 (en) * 1989-07-28 1991-03-27 Fiberweb North America, Inc. A nonwoven composite fabric combined by hydroentangling and a method of manufacturing the same
US5328759A (en) * 1991-11-01 1994-07-12 Kimberly-Clark Corporation Process for making a hydraulically needled superabsorbent composite material and article thereof
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Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2002068744A2 (en) * 2001-02-07 2002-09-06 Fleissner Gmbh & Co. Maschinenfabrik Water-needled, composite nonwoven consisting of staple fibres and continuous filaments and method for producing the same
WO2002068744A3 (en) * 2001-02-07 2003-11-13 Fleissner Maschf Gmbh Co Water-needled, composite nonwoven consisting of staple fibres and continuous filaments and method for producing the same
WO2007077214A1 (en) * 2006-01-04 2007-07-12 Johnson & Johnson Gmbh Laminated acquisition and distribution layer structure for absorbent hygiene products and method for producing the same
WO2013092978A1 (en) * 2011-12-22 2013-06-27 Bayerische Motoren Werke Aktiengesellschaft Interior component for a vehicle
WO2015055177A1 (en) * 2013-10-18 2015-04-23 Ascania Nonwoven Germany Gmbh Voluminous nonwoven composite and method for producing same
CN105934546A (en) * 2013-10-18 2016-09-07 蒙迪阿斯卡尼亚有限公司 Voluminous nonwoven composite and method for producing same
US9878517B2 (en) 2013-10-18 2018-01-30 Mondi Ascania GmbH Voluminous nonwoven composite and method for producing same

Also Published As

Publication number Publication date
EP0751249A3 (en) 2000-06-07
EP0751249B1 (en) 2003-10-22
US5701643A (en) 1997-12-30
DE59610781D1 (en) 2003-11-27
DE19522763A1 (en) 1997-01-02

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