EP1402099A1 - Method for producing bonded non-wovens from at least partially microfine continuous fibres and non-wovens thereby produced - Google Patents

Method for producing bonded non-wovens from at least partially microfine continuous fibres and non-wovens thereby produced

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Publication number
EP1402099A1
EP1402099A1 EP02735401A EP02735401A EP1402099A1 EP 1402099 A1 EP1402099 A1 EP 1402099A1 EP 02735401 A EP02735401 A EP 02735401A EP 02735401 A EP02735401 A EP 02735401A EP 1402099 A1 EP1402099 A1 EP 1402099A1
Authority
EP
European Patent Office
Prior art keywords
fibers
microfibers
continuous
spun
nonwoven
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
EP02735401A
Other languages
German (de)
French (fr)
Other versions
EP1402099B1 (en
Inventor
Lüder GERKING
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
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Filing date
Publication date
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Application filed by Fleissner GmbH filed Critical Fleissner GmbH
Publication of EP1402099A1 publication Critical patent/EP1402099A1/en
Application granted granted Critical
Publication of EP1402099B1 publication Critical patent/EP1402099B1/en
Anticipated expiration legal-status Critical
Revoked 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
    • D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
    • D01D—MECHANICAL METHODS OR APPARATUS IN THE MANUFACTURE OF ARTIFICIAL FILAMENTS, THREADS, FIBRES, BRISTLES OR RIBBONS
    • D01D4/00—Spinnerette packs; Cleaning thereof
    • D01D4/02—Spinnerettes
    • D01D4/025—Melt-blowing or solution-blowing dies
    • D—TEXTILES; PAPER
    • D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
    • D01D—MECHANICAL METHODS OR APPARATUS IN THE MANUFACTURE OF ARTIFICIAL FILAMENTS, THREADS, FIBRES, BRISTLES OR RIBBONS
    • D01D5/00—Formation of filaments, threads, or the like
    • D01D5/08—Melt spinning methods
    • D01D5/098—Melt spinning methods with simultaneous stretching
    • D01D5/0985—Melt spinning methods with simultaneous stretching by means of a flowing gas (e.g. melt-blowing)
    • 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
    • D04H1/42—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 characterised by the use of certain kinds of fibres insofar as this use has no preponderant influence on the consolidation of the fleece
    • D04H1/4266—Natural fibres not provided for in group D04H1/425
    • 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
    • D04H3/016—Non-woven fabrics formed wholly or mainly of yarns or like filamentary material of substantial length characterised by the fineness
    • 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
    • D04H3/02—Non-woven fabrics formed wholly or mainly of yarns or like filamentary material of substantial length characterised by the method of forming fleeces or layers, e.g. reorientation of yarns or filaments
    • 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
    • D04H5/00—Non woven fabrics formed of mixtures of relatively short fibres and yarns or like filamentary material of substantial length
    • D04H5/02—Non woven fabrics formed of mixtures of relatively short fibres and yarns or like filamentary material of substantial length strengthened or consolidated by mechanical methods, e.g. needling
    • D04H5/03—Non woven fabrics formed of mixtures of relatively short fibres and yarns or like filamentary material of substantial length strengthened or consolidated by mechanical methods, e.g. needling by fluid jet
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T442/00—Fabric [woven, knitted, or nonwoven textile or cloth, etc.]
    • Y10T442/60—Nonwoven fabric [i.e., nonwoven strand or fiber material]
    • Y10T442/608—Including strand or fiber material which is of specific structural definition
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T442/00—Fabric [woven, knitted, or nonwoven textile or cloth, etc.]
    • Y10T442/60—Nonwoven fabric [i.e., nonwoven strand or fiber material]
    • Y10T442/608—Including strand or fiber material which is of specific structural definition
    • Y10T442/614—Strand or fiber material specified as having microdimensions [i.e., microfiber]
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T442/00—Fabric [woven, knitted, or nonwoven textile or cloth, etc.]
    • Y10T442/60—Nonwoven fabric [i.e., nonwoven strand or fiber material]
    • Y10T442/608—Including strand or fiber material which is of specific structural definition
    • Y10T442/614—Strand or fiber material specified as having microdimensions [i.e., microfiber]
    • Y10T442/62—Including another chemically different microfiber in a separate layer
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T442/00—Fabric [woven, knitted, or nonwoven textile or cloth, etc.]
    • Y10T442/60—Nonwoven fabric [i.e., nonwoven strand or fiber material]
    • Y10T442/608—Including strand or fiber material which is of specific structural definition
    • Y10T442/614—Strand or fiber material specified as having microdimensions [i.e., microfiber]
    • Y10T442/621—Including other strand or fiber material in a different layer not specified as having microdimensions
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T442/00—Fabric [woven, knitted, or nonwoven textile or cloth, etc.]
    • Y10T442/60—Nonwoven fabric [i.e., nonwoven strand or fiber material]
    • Y10T442/608—Including strand or fiber material which is of specific structural definition
    • Y10T442/614—Strand or fiber material specified as having microdimensions [i.e., microfiber]
    • Y10T442/626—Microfiber is synthetic polymer
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T442/00—Fabric [woven, knitted, or nonwoven textile or cloth, etc.]
    • Y10T442/60—Nonwoven fabric [i.e., nonwoven strand or fiber material]
    • Y10T442/696—Including strand or fiber material which is stated to have specific attributes [e.g., heat or fire resistance, chemical or solvent resistance, high absorption for aqueous compositions, water solubility, heat shrinkability, etc.]

Definitions

  • DE-A-199 29 709 discloses a fiber production process in which threads are spun out of a plurality of spinning bores from a polymer melt of only one specific polymer and the spun threads are distorted by essentially cold gas streams accelerated to high speed by means of an acceleration or Laval nozzle are and each thread receives a hydrostatic internal pressure that is greater than the surrounding gas pressure before solidification due to further manufacturing conditions, such that each thread bursts in the longitudinal direction and fuses into a large number of fine endless threads. These endless microfibers can then be continuously laid down to form a nonwoven of any width.
  • the threads are very fine, they have an average diameter of about 2 ⁇ m and are essentially endless even with this diameter. Since they are not stretched by a hot air stream as in the meltblown process, they are not thermally damaged and have high strength.
  • the threads can be made from any polymer or from solutions using the Lyocell process.
  • Microfibers are also so-called split fibers. They arise from threads that are spun from several polymers and then z. B. be split by water jets. However, this microfiber manufacturing process is more complex. There is a need to consolidate the microfibers produced as initially defined.

Abstract

A strengthened nonwoven is made at least in part of spun microfibers that are strengthened by hydrodynamic needling, alone or together with other fibers such as also staple fibers and/or endless fibers. The microfibers are spun from a polymer melt of only one certain polymer from a plurality of spinning apertures, and the spun filaments are drawn by gas streams accelerated to high velocity by an accelerating nozzle such as a Laval nozzle and, due to further production conditions, each fiber receives before solidification an internal hydrostatic pressure that is higher than the ambient gas pressure so that each fiber cracks in the longitudinal direction and splits up into a plurality of fine endless filaments.

Description

Verfahren zur Herstellung eines verfestigten Nonwoven aus zumindest teilweise mikrofeinen Endlosfasern und Nonwoven nach diesem VerfahrenProcess for producing a consolidated nonwoven from at least partially microfine continuous fibers and nonwoven by this process
Durch die DE-A-199 29 709 ist ein Faserherstellungsverfahren bekannt, bei dem aus einer Polymerschmelze nur eines bestimmten Polymers Fäden aus einer Vielzahl von Spinnbohrungen ausgesponnen und die ausgesponnenen Fäden durch mittels einer Beschleunigungs- wie Lavaldüse auf hohe Geschwindigkeit beschleunigte im wesentlichen kalte Gasströme verzogen werden und jeder Faden aufgrund von weiteren Herstellungsbedingungen vor dem Erstarren einen hydrostatischen Innendruck erhält, der größer ist als der umgebende Gasdruck, derart, dass jeder Faden in Längsrichtung platzt und sich in eine Vielzahl feiner Endlosfäden aufspleißt. Diese endlosen Mikrofasern können anschließend fortlaufend zu einem Nonwoven beliebiger Breite abgelegt werden.DE-A-199 29 709 discloses a fiber production process in which threads are spun out of a plurality of spinning bores from a polymer melt of only one specific polymer and the spun threads are distorted by essentially cold gas streams accelerated to high speed by means of an acceleration or Laval nozzle are and each thread receives a hydrostatic internal pressure that is greater than the surrounding gas pressure before solidification due to further manufacturing conditions, such that each thread bursts in the longitudinal direction and fuses into a large number of fine endless threads. These endless microfibers can then be continuously laid down to form a nonwoven of any width.
Dieses Faserherstellungsverfahren hat erhebliche Vorteile gegenüber dem Stand der Technik nach dem Meltblownverfahren, mit dem auch Mikrofasern hergestellt werden. Die Fäden sind sehr fein, sie haben im Mittel einen Durchmesser von etwa 2 μm und sind selbst bei diesem Durchmesser im wesentlichen endlos. Da sie nicht wie beim Meltblownverfahren durch einen heißen Luftstrom verstreckt werden, sind sie thermisch nicht geschädigt und haben eine hohe Festigkeit. Die Fäden können aus jeglichem Polymer aber auch aus Lösungen nach dem Lyocell-Verfahren hergestellt werden.This fiber production process has considerable advantages over the prior art according to the meltblown process, with which microfibers are also produced. The threads are very fine, they have an average diameter of about 2 μm and are essentially endless even with this diameter. Since they are not stretched by a hot air stream as in the meltblown process, they are not thermally damaged and have high strength. The threads can be made from any polymer or from solutions using the Lyocell process.
Mikrofasern sind auch sogenannte Splitfasern. Sie entstehen aus Fäden, die aus mehreren Polymeren gesponnen werden und anschließend z. B. durch Wasserstrahlen gesplittet werden. Dieses Mikrofaserherstellungsverfahren ist aber aufwendiger. Es besteht die Notwendigkeit der Verfestigung der wie anfangs definiert hergestellten Mikrofasern.Microfibers are also so-called split fibers. They arise from threads that are spun from several polymers and then z. B. be split by water jets. However, this microfiber manufacturing process is more complex. There is a need to consolidate the microfibers produced as initially defined.
Es ist die Idee der Erfindung dieses mit der hydrodynamischen Vernadelung zu bewirken. Diese ist hier besonders wirkungsvoll, weil diese so hergestellten sehr dünnen Endlosfasern leicht durch die Wasservernadelung verlagert und trotzt ihrer Endlosigkeit mit den benachbarten Fasern verschlungen werden können. Es entsteht ein abriebfestes Produkt, was auch gilt, wenn das Vlies nass geworden ist. Das Produkt ist nicht nur abriebfest, sondern es entsteht auch kein Pillingeffekt, da es sich um verschlungene Endlosfasern handelt, die ansonsten bei normalen Endlosfasern wegen ihrer Längsfestigkeit nur schwerlich mit Wasser verlagert werden können.It is the idea of the invention to do this with the hydrodynamic needling. This is particularly effective here because the very thin continuous fibers produced in this way are easily displaced by the water needling and, despite their endlessness, can be swallowed up by the neighboring fibers. An abrasion-resistant product is created, which also applies if the fleece has got wet. The product is not only abrasion-resistant, but there is also no pilling effect, since it is a looped continuous fiber that, with normal continuous fibers, is otherwise difficult to displace with water due to its longitudinal strength.
Die Anwendung des hydrodynamischen Vernadelns ist auf diesem Gebiet bereits mehrfach bekannt. Es wird bezüglich der schmelzgeblasenen Fasern auf die EP-A-0 333 228 und bezüglich Splitfasern auf die US-A-4 233 349 verwiesen. Im vorliegenden Fall ist die Anwendung der Wasservernadelung besonders vorteilhaft, weil das Produkt trotzt der endlosen Fasern mit Wasserstrahlen fest vernadelt werden kann, derart, dass ein Pillingeffekt beim späteren Benutzen des verfestigten Nonwoven nicht auftritt. Das Vlies hat eine weiche ganz gleichmäßige Oberfläche und kann deshalb für viele Anwendungszwecke in der Industrie mit großem Vorteil Verwendung finden. The use of hydrodynamic needling is already known several times in this area. Reference is made to EP-A-0 333 228 for meltblown fibers and to US-A-4 233 349 for split fibers. In the present case, the use of water needling is particularly advantageous because, despite the endless fibers, the product can be needled with water jets in such a way that a pilling effect does not occur when the solidified nonwoven is subsequently used. The fleece has a soft, very uniform surface and can therefore be used with great advantage for many industrial purposes.

Claims

P a t e n t a n s p r ü c h e : Patent claims:
1. Verfahren zur Herstellung eines verfestigten Nonwoven aus zumindest teilweise mikrofeinen Endlosfasern aus schmelzbaren Polymeren, a) bei dem eine Polymerschmelze nur eines bestimmten Polymers aus einer Vielzahl von Spinnbohrungen ausgesponnen und die ausgesponnenen Fäden durch mittels einer Beschleunigungs- wie Lavaldüse auf hohe Geschwindigkeit beschleunigte im wesentlichen kalte Gasströme verzogen werden und jeder Faden aufgrund von weiteren Herstellungsbedingungen vor dem Erstarren einen hydrostatischen Innendruck erhält, der größer ist als der umgebende Gasdruck, derart, dass jeder Faden in Längsrichtung platzt und sich in eine Vielzahl feiner Endlosfäden aufspleißt, b) kontinuierliches Ablegen dieser Mikrofasern zu einem Nonwoven beliebiger Breite c) und fortlaufendes Beaufschlagen dieses Vlieses mit hydrodynamischen Wasserstrahlen zum Verwirren der Mikrofasern untereinander, zum Verfestigen des Nonwoven aus den längs gespleißten Endlosfasern d) und Vermischen und Verbinden ggf. mit andern Fasern, die unter den Mikrofasern bereits vorgelegt sind und/oder auf die Mikrofasern anschließend abgelegt werden.1. A process for producing a solidified nonwoven from at least partially microfine continuous fibers made of meltable polymers, a) in which a polymer melt of only one specific polymer is spun out of a large number of spinning bores and the spun threads are accelerated to high speed essentially by means of an acceleration and Laval nozzle cold gas flows are distorted and each thread receives a hydrostatic internal pressure which is greater than the surrounding gas pressure due to further manufacturing conditions before solidification, such that each thread bursts lengthways and fuses into a large number of fine continuous threads, b) continuous deposition of these microfibers to a nonwoven of any width c) and continuous application of this fleece with hydrodynamic water jets to confuse the microfibers with each other, to solidify the nonwoven from the longitudinally spliced continuous fibers d) and mixing and V connect with other fibers, if any, which are already placed under the microfibers and / or are subsequently deposited on the microfibers.
2. Verfahren nach Anspruch 1 , dadurch gekennzeichnet, dass die anderen Fasern aus natürlichen oder weiteren synthetischen Fasern - wie Stapel- und/oder Endlosfasern - bestehen.2. The method according to claim 1, characterized in that the other fibers consist of natural or further synthetic fibers - such as staple and / or continuous fibers.
3. Verfahren nach Anspruch 1 oder 2, dadurch gekennzeichnet, dass die anderen Fasern aus Wood Pulpfasern ggf. zusammen mit den weiteren synthetischen Fasern bestehen. 3. The method according to claim 1 or 2, characterized in that the other fibers consist of wood pulp fibers, optionally together with the other synthetic fibers.
4. Verfestigtes Nonwoven, das zumindest teilweise aus Mikrofasern besteht, a) die aus einer Polymerschmelze nur eines bestimmten Polymers aus einer Vielzahl von Spinnbohrungen ausgesponnen und die ausgesponnenen Fäden durch mittels einer Beschleunigungs- wie Lavaldüse auf hohe Geschwindigkeit beschleunigte Gasströme verzogen werden und jeder Faden aufgrund von weiteren Herstellungsbedingungen vor dem Erstarren einen hydrostatischen Innendruck erhält, der größer ist als der umgebende Gasdruck, derart, dass jeder Faden in Längsrichtung platzt und sich in eine Vielzahl feiner Endlosfäden aufspleißt, b) und alleine oder zusammen mit anderen Fasern wie auch Stapel- und/oder Endlosfasern mittels einer hydrodynamischen Vernadelung verfestigt sind.4. Solidified nonwoven, which consists at least partially of microfibers, a) which are spun from a polymer melt of only one specific polymer from a large number of spinning bores and the spun threads are distorted by gas flows accelerated to high speed by means of an acceleration or Laval nozzle and each thread is caused by receives from other manufacturing conditions before solidification a hydrostatic internal pressure that is greater than the surrounding gas pressure, such that each thread bursts in the longitudinal direction and fuses into a large number of fine continuous threads, b) and alone or together with other fibers such as staple and / or continuous fibers are solidified by means of hydrodynamic needling.
5. Nonwoven nach Anspruch 4, dadurch gekennzeichnet, dass die Mikrofasern auf einer Trägerschicht aus stabileren Chemiefasern abgelegt sind und als Trennschicht für eine auf die Mikrofasern abgelegte Wood Pulpschicht dienen. 5. Nonwoven according to claim 4, characterized in that the microfibers are deposited on a carrier layer made of more stable chemical fibers and serve as a separating layer for a wood pulp layer deposited on the microfibers.
EP02735401A 2001-06-07 2002-06-04 Method for producing bonded non-wovens from at least partially microfine continuous fibres and non-wovens thereby produced Revoked EP1402099B1 (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE10127471A DE10127471A1 (en) 2001-06-07 2001-06-07 Fixed nonwoven, at least partially of micro-fine continuous fusible polymer filaments, has longitudinally split melt spun filaments laid across the material width and bonded by water jets
DE10127471 2001-06-07
PCT/EP2002/006075 WO2002099176A1 (en) 2001-06-07 2002-06-04 Method for producing bonded non-wovens from at least partially microfine continuous fibres and non-wovens thereby produced

Publications (2)

Publication Number Publication Date
EP1402099A1 true EP1402099A1 (en) 2004-03-31
EP1402099B1 EP1402099B1 (en) 2005-11-30

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Family Applications (1)

Application Number Title Priority Date Filing Date
EP02735401A Revoked EP1402099B1 (en) 2001-06-07 2002-06-04 Method for producing bonded non-wovens from at least partially microfine continuous fibres and non-wovens thereby produced

Country Status (9)

Country Link
US (2) US20040222556A1 (en)
EP (1) EP1402099B1 (en)
JP (1) JP2004527673A (en)
CN (1) CN1330813C (en)
AT (1) ATE311493T1 (en)
DE (2) DE10127471A1 (en)
DK (1) DK1402099T3 (en)
ES (1) ES2254689T3 (en)
WO (1) WO2002099176A1 (en)

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
ITMI20030805A1 (en) 2003-04-17 2004-10-18 Orlandi Spa NON-FABRIC BASED ON EXPLODED FIBERS OR MULTI-COMPONENT FIBERS SPLITTABLE.
DE10322460B4 (en) * 2003-05-16 2007-02-08 Corovin Gmbh Method and apparatus for producing a spunbonded web of filaments of broken fibers, filaments of broken fibers and nonwoven web
DE102006012052A1 (en) * 2006-03-08 2007-09-13 Lüder GERKING Spinning device for producing fine threads by splicing
AT505621B1 (en) * 2007-11-07 2009-03-15 Chemiefaser Lenzing Ag METHODS FOR PRODUCING A WATER-IRRADIZED PRODUCT CONTAINING CELLULOSIC FIBERS
DE102009005387A1 (en) 2009-01-21 2010-07-22 Fleissner Gmbh Composite non-woven, useful as filtration medium, comprises nanofibers bonded to supporting non-woven by fiber entanglements created by water-jet needling
DE102009010935A1 (en) 2009-02-27 2010-10-14 Fleissner Gmbh Nonwoven composite for filter medium, comprises layers of support non-woven having fibers and/or filament, and/or further layers applied on the support layer, where a layer of microfibers and/or nanofibers is present on the support layer
JP6614450B2 (en) * 2016-05-11 2019-12-04 パナソニックＩｐマネジメント株式会社 Nonwoven fabric and sound absorbing material
DE102016010163A1 (en) * 2016-08-25 2018-03-01 Carl Freudenberg Kg Technical packaging material

Family Cites Families (17)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3485706A (en) * 1968-01-18 1969-12-23 Du Pont Textile-like patterned nonwoven fabrics and their production
US4233349A (en) * 1979-03-26 1980-11-11 E. I. Du Pont De Nemours And Company Suede-like product and process therefor
US4735849A (en) * 1985-08-26 1988-04-05 Toray Industries, Inc. Non-woven fabric
US4970104A (en) * 1988-03-18 1990-11-13 Kimberly-Clark Corporation Nonwoven material subjected to hydraulic jet treatment in spots
US4879170A (en) * 1988-03-18 1989-11-07 Kimberly-Clark Corporation Nonwoven fibrous hydraulically entangled elastic coform material and method of formation thereof
US4950531A (en) * 1988-03-18 1990-08-21 Kimberly-Clark Corporation Nonwoven hydraulically entangled non-elastic web and method of formation thereof
US5137600A (en) * 1990-11-01 1992-08-11 Kimberley-Clark Corporation Hydraulically needled nonwoven pulp fiber web
US5328759A (en) * 1991-11-01 1994-07-12 Kimberly-Clark Corporation Process for making a hydraulically needled superabsorbent composite material and article thereof
US5573841A (en) * 1994-04-04 1996-11-12 Kimberly-Clark Corporation Hydraulically entangled, autogenous-bonding, nonwoven composite fabric
US5620785A (en) * 1995-06-07 1997-04-15 Fiberweb North America, Inc. Meltblown barrier webs and processes of making same
EP0796940B1 (en) * 1995-10-06 2003-02-26 Nippon Petrochemicals Co., Ltd. Water jet intertwined nonwoven cloth and method of manufacturing the same
FR2749860B1 (en) * 1996-06-17 1998-08-28 Freudenberg Spunweb Sa NON WOVEN TABLECLOTH FORMED OF VERY THIN CONTINUOUS FILAMENTS
US5883026A (en) * 1997-02-27 1999-03-16 Kimberly-Clark Worldwide, Inc. Face masks including a spunbonded/meltblown/spunbonded laminate
US5970583A (en) * 1997-06-17 1999-10-26 Firma Carl Freudenberg Nonwoven lap formed of very fine continuous filaments
US6177370B1 (en) * 1998-09-29 2001-01-23 Kimberly-Clark Worldwide, Inc. Fabric
DE19929709C2 (en) * 1999-06-24 2001-07-12 Lueder Gerking Process for the production of essentially endless fine threads and use of the device for carrying out the process
DE19934442C2 (en) * 1999-07-26 2001-09-20 Freudenberg Carl Fa Process for producing a nonwoven and nonwoven for producing cleanroom protective clothing

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See references of WO02099176A1 *

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CN1513070A (en) 2004-07-14
ATE311493T1 (en) 2005-12-15
WO2002099176A1 (en) 2002-12-12
US20040222556A1 (en) 2004-11-11
CN1330813C (en) 2007-08-08
DE50205125D1 (en) 2006-01-05
EP1402099B1 (en) 2005-11-30
ES2254689T3 (en) 2006-06-16
US20070004304A1 (en) 2007-01-04
DE10127471A1 (en) 2002-12-12
JP2004527673A (en) 2004-09-09

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