EP1428919A1 - Method of producing a flat sheet structure from at least partially split yarns, fibres or filaments - Google Patents

Method of producing a flat sheet structure from at least partially split yarns, fibres or filaments Download PDF

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Publication number
EP1428919A1
EP1428919A1 EP03021590A EP03021590A EP1428919A1 EP 1428919 A1 EP1428919 A1 EP 1428919A1 EP 03021590 A EP03021590 A EP 03021590A EP 03021590 A EP03021590 A EP 03021590A EP 1428919 A1 EP1428919 A1 EP 1428919A1
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EP
European Patent Office
Prior art keywords
filaments
polyamide
fibers
density
yarns
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EP03021590A
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German (de)
French (fr)
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EP1428919B1 (en
Inventor
Denis Dr. Reibel
Delphine Guigner
Georges Riboulet
Robert Dr. Groten
Ulrich Dr. Jahn
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Carl Freudenberg KG
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Carl Freudenberg KG
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    • D—TEXTILES; PAPER
    • D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
    • D01F—CHEMICAL FEATURES IN THE MANUFACTURE OF ARTIFICIAL FILAMENTS, THREADS, FIBRES, BRISTLES OR RIBBONS; APPARATUS SPECIALLY ADAPTED FOR THE MANUFACTURE OF CARBON FILAMENTS
    • D01F8/00—Conjugated, i.e. bi- or multicomponent, artificial filaments or the like; Manufacture thereof
    • D01F8/04—Conjugated, i.e. bi- or multicomponent, artificial filaments or the like; Manufacture thereof from synthetic polymers
    • D—TEXTILES; PAPER
    • D04—BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
    • D04H—MAKING TEXTILE FABRICS, e.g. FROM FIBRES OR FILAMENTARY MATERIAL; FABRICS MADE BY SUCH PROCESSES OR APPARATUS, e.g. FELTS, NON-WOVEN FABRICS; COTTON-WOOL; WADDING ; NON-WOVEN FABRICS FROM STAPLE FIBRES, FILAMENTS OR YARNS, BONDED WITH AT LEAST ONE WEB-LIKE MATERIAL DURING THEIR CONSOLIDATION
    • 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
    • D04H1/48—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 in combination with at least one other method of consolidation
    • D04H1/485—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 in combination with at least one other method of consolidation in combination with weld-bonding
    • 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
    • D04H1/40—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
    • D04H1/54—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 by welding together the fibres, e.g. by partially melting or dissolving
    • 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
    • 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
    • D04H3/14—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 thermoplastic yarns or filaments produced by welding
    • 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
    • D04H3/14—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 thermoplastic yarns or filaments produced by welding
    • D04H3/147—Composite yarns or filaments

Definitions

  • the invention relates to a method for producing a fabric at least partially split yarns, fibers or filaments.
  • Document EP 0 814188 A describes the production of easily cleavable, conjugated fibers known. These are made from two by a spinning process primarily incompatible starting materials such as polyethylene terephthalate and Polyamide spun and can be affected by mechanical forces such as e.g. a water jet treatment can be split into its filaments. From documents JP A 1 00 96119, JP A 2000017519 or JP A 2001181931 are known conjugated fibers and textiles made therefrom, that of two mutually compatible polymers in a spinning process be produced and by a gap treatment in these filaments be split up.
  • the object of the invention is to provide a method which the manufacturing process of fabrics made of splittable fibers, yarns or filaments simplified, the degree of splitting increased, or at least partial splitting of mutually compatible polymers allows conjugate fibers.
  • the object is achieved according to the preamble by yarns, fibers or filaments which are formed from at least two filaments and which originate from a common spinneret and are formed to form a surface which is at a temperature between the glass transition temperature (T g ) and the melting temperature of the or the polymer (s) used are compressed to at least 10% of the density of the polymer (s) used, so that subsequent mechanical action at least partially results in a splitting into the filaments.
  • T g glass transition temperature
  • T g glass transition temperature
  • the polymer (s) used are compressed to at least 10% of the density of the polymer (s) used, so that subsequent mechanical action at least partially results in a splitting into the filaments.
  • conjugated yarns, fibers or filaments of mutually incompatible polymers can be almost completely split into their filaments and yarns, fibers or filaments of mutually compatible polymers at least partially show a split in their filaments.
  • the method is advantageously carried out in such a way that the compression at a temperature of up to max. 10 ° C below the melting temperature of the polymer with the lowest melting temperature. This enables a maximum splitting result to be achieved without the yarns, fibers or filaments fusing in the fabric.
  • a method in which the starting sheet is particularly preferred to a density of at least 15% of the density of the one or more Polymer (s) is compressed.
  • Yarns, fibers or filaments made of mutually incompatible polymers Achieve gaps greater than 99% with a reduction in energy consumption for high pressure water jet treatment. They are opposite one from the State of the art high pressure water jet splitting and Consolidation only requires two treatment stages.
  • the compression of the starting fabric is also Made using a roller calender.
  • This type of compression leaves integrate particularly easily into a continuous manufacturing process.
  • the splitting into the filaments is advantageously carried out by means of a Hydrofluid treatment carried out at pressures of 120 - 500 bar.
  • the Hydrofluid treatment at pressures of 120 - 500 bar leads, depending on Composition of the conjugated yarns, fibers or filaments into one at least partially up to an almost complete split into the Filaments and to entangle and solidify the resulting existing fabric.
  • the split into Microelement threads lead to flat structures with very small pores.
  • melt-spun filaments or alternatively staple fibers are used.
  • they consist of at least two micro-elementary threads composite yarns, fibers or filaments from each other compatible polymers, selected from the group polyethylene / polypropylene (PE / PP), polyethylene terephthalate / polybutylene terephthalate (PET / PBT), Polyethylene terephthalate / polytrimethylene terephthalate (PET / PTT), Polyethylene terephthalate / recycled polyester PET / R-PES), Polyethylene terephthalate / polylactate (PET / PLA), polyester / copolyester (PES / CoPES), polyamide / copolyamide (PA / CoPA), polyamide 6 / polyamide 66 (PA6 / PA66) and polyamide 6 / polyamide 12 (PA6 / PA12).
  • PE / PP polyethylene terephthalate / polybutylene terephthalate
  • PET / PTT Polyethylene terephthalate / polytrimethylene terephthalate
  • polyester / polyamide (PES / PA), Copolyester / copolyamide (CoPES / CoPA), in particular Polyethylene terephthalate / polyamide (PET / PA) and recycled polyester / polyamide (R-PES / PA).
  • Recycled polyester is used in particular understood material obtained from commercial PES bottles.
  • a pile is made from continuous bi-component filaments, the elementary filaments of which are arranged across the cross-section in the form of orange slices or pie pieces.
  • the pile consists of polyethylene terephthalate / polyamide 66 (PET / PA66) which are contained in the filaments in a ratio of 70:30% by weight.
  • the polymers have the following additives and properties polyester polyamide Addition of TiO 2 0.8% 0.4% melting point 259 ° C 256 ° C Melt viscosity at 290 ° C 150 Pa ⁇ s 110-1150 Pa ⁇ s density 1360 kg / m 3 1130 kg / m 3
  • the starting polymers After the starting polymers have dried, they are extruded at approx. 285 ° C for the PET and 280 ° C for the PA66 and through a spinning head, which is operated at a temperature of 285 ° C, at a spinning rate of approximately 4,500 m / min ( 75 m / s) and a throughput of about 1 g / hole / min (60 g / hole / h).
  • the filaments are then cooled, subjected to a drawing process and laid down into a pile, as already described in the aforementioned document FR 7420254.
  • the pile has a basis weight of approx.
  • the pile After calendering, the pile is treated with High-pressure water jets almost completely into the elementary microfilaments split and swirled and thereby solidified.
  • the conditions and the means for carrying out the hydraulic consolidation correspond to Essential to that described in document FR 7420254. After The elementary filaments have a titer of 0.15 dTex.
  • a continuous bi-component filament consisting of polyethylene terephthalate / polyamide 6 (PET / PA6) in which the elementary filaments are alternately arranged in the form of cake pieces viewed across the cross section is produced according to the previously mentioned process according to FR 7420254.
  • the PA 6 is extruded at 260 ° C.
  • the other spinning conditions correspond to example 1.
  • the calendering conditions are simulated by placing a filament between two plates heated to 180 ° C are pressed at a pressure of 300 bar, the combined effect of temperature and pressure leads to pre-splitting of filaments.
  • a pile is made from bi-component staple fibers.
  • the staple fibers have a V-shaped cross section of the polyethylene terephthalate, at the ends of which polyamide 6 components are arranged.
  • the pile obtained has a weight per unit area of 50 g / m 2 and is pressed directly after the pile formation process between two plates heated to 180 ° C. with a pressure of 300 bar. The combined effect of temperature and pressure leads to a pre-splitting of the filaments.
  • the PET corresponds to Example 1 and the other spinning conditions are identical to those in Example 1.
  • the PBT is extruded at 250 ° C.
  • PET PBT Addition of TiO 2 0.8% 0.4% melting point 259 ° C 225 ° C Melt viscosity at 290 ° C 150 Pa ⁇ s 350 Pa ⁇ s density 1360 kg / m 3 1300 kg / m 3
  • the pile obtained has a weight per unit area of 170 g / m 2 and is pressed immediately after the pile formation between two plates at a temperature of 200 ° C. with a pressure of 400 bar.
  • the density of the pile thus reaches 770 kg / m 3 (57.38% of the density of the polymers).
  • the combined effect of temperature and pressure leads to a pre-splitting of the filaments.
  • a continuous pile with the same filament composition and arrangement is produced under the same spinning conditions as described in Example 4. This pile is heated in an oven to 200 ° C. for 30 seconds immediately after the pile is laid. The density of the pile is 110 kg / m 3 (8.2% of the density of the polymers). After this treatment, the pile of a hydraulic consolidation is treated under the conditions and with the means essentially comparable to the document FR 7420254 described. The pile, which was only subjected to a thermal treatment, shows no splitting in the elementary filaments.
  • a continuous pile of filaments with the same fiber composition and arrangement is produced under the spinning conditions described in Example 4.
  • the pile is pressed immediately after laying at room temperature with a pressure of 400 bar.
  • the density of the pile thus reaches 370 kg / m 3 (28.65% of the density of the polymers). Under these conditions, no splitting into the elementary filaments is achieved.
  • a pile is made from bi-component filaments in an orange slit arrangement of the elementary filaments according to the process described in document FR 7420254.
  • the filaments consist of polyethylene terephthalate / polytrimethylene terephthalate (PET / PTT) with a weight fraction of 70: 30%.
  • PET / PTT polyethylene terephthalate / polytrimethylene terephthalate
  • the PTT is extruded at 250 ° C.
  • the PET and the spinning conditions are identical to those described in Example 1.
  • PET PTT Addition of TiO 2 0.8% melting point 259 ° C 240 ° C Melt viscosity at 290 ° C 150 Pa ⁇ s 500 Pa ⁇ s density 1360 kg / m 3 1350 kg / m 3
  • the pile has a basis weight of 130 g / m 2 and is compacted by calendering between two heated metal rollers immediately after the pile is laid.
  • One of the metal rollers is an engraved roller with 52 teeth / cm 2 , the other a smooth roller, which is operated at a temperature of 160 ° C.
  • a pressing pressure of 30 daN / cm width and a calendering speed of 15 m / min (900 m / h) With a pressing pressure of 30 daN / cm width and a calendering speed of 15 m / min (900 m / h), a density of the pile of 760 kg / m 3 (56.0% of the density of the polymers) is achieved.
  • the pile is subjected to a water jet treatment, which leads to a splitting and swirling of the elementary filaments.

Abstract

Production of a fabric comprises making a fabric from yarns, fibers or filaments consisting of at least two elementary threads from a common spinneret, compressing the fabric to at least 10% of the density of its constituent polymer(s) at a temperature between the glass transition temperature and melting temperature of the polymer(s), and mechanically splitting the product to separate the elementary threads.

Description

Die Erfindung betrifft ein Verfahren zur Herstellung eines Flächengebildes aus zumindest teilweise gesplitteten Garnen, Fasern oder Filamenten.The invention relates to a method for producing a fabric at least partially split yarns, fibers or filaments.

Aus dem Dokument EP 0 814188 A ist die Herstellung von leicht spaltbaren, konjugierten Fasern bekannt. Diese werden durch einen Spinnprozess aus zwei primär unverträglichen Ausgangsstoffen wie Polyethylenterephthalat und Polyamid ersponnen und können durch Einwirkungen mechanischer Kräfte wie z.B. eine Wasserstrahlbehandlung in ihre Elementarfäden gespalten werden. Aus den Dokumenten JP A 1 00 96119, JP A 2000017519 oder JP A 2001181931 sind konjugierte Fasern und daraus hergestellte Textilien bekannt, die aus zwei miteinander verträglichen Polymeren in einem Spinnprozess hergestellt werden und durch eine Spaltbehandlung in diese Elementarfäden aufgespalten werden. Auch die Dokumente DE 100 80 786 T1 und EP A 0953660 beschreiben textile Gebilde, die aus miteinander verträglichen Polymeren ersponnen werden und durch einen anschließenden Spaltprozess in Fasern mit geringerem Querschnitt aufgespalten werden. Dabei wird von Trennmitteln an den Phasengrenzen der Polymeren oder spezifischen Ätztechniken Gebrauch gemacht. Document EP 0 814188 A describes the production of easily cleavable, conjugated fibers known. These are made from two by a spinning process primarily incompatible starting materials such as polyethylene terephthalate and Polyamide spun and can be affected by mechanical forces such as e.g. a water jet treatment can be split into its filaments. From documents JP A 1 00 96119, JP A 2000017519 or JP A 2001181931 are known conjugated fibers and textiles made therefrom, that of two mutually compatible polymers in a spinning process be produced and by a gap treatment in these filaments be split up. The documents DE 100 80 786 T1 and EP A 0953660 describe textile structures that are made of mutually compatible Polymers are spun in and through a subsequent splitting process Fibers with a smaller cross section are split. Thereby from Release agents at the phase boundaries of the polymers or specific ones Etching techniques made use of.

Die Erfindung hat sich die Aufgabe gestellt, ein Verfahren anzugeben, welches den Herstellungsprozess von Flächengebilden aus splittbaren Fasern, Garnen oder Filamenten vereinfacht, den Splittungsgrad erhöht, bzw. die zumindest teilweise Splittung von aus miteinander verträglichen Polymeren bestehenden konjugierten Fasern ermöglicht.The object of the invention is to provide a method which the manufacturing process of fabrics made of splittable fibers, yarns or filaments simplified, the degree of splitting increased, or at least partial splitting of mutually compatible polymers allows conjugate fibers.

Erfindungsgemäß wird die Aufgabe gemäß dem Oberbegriff durch Garne, Fasern oder Filamente gelöst, die aus mindestens zwei Elementarfäden gebildet sind und die einer gemeinsamen Spinndüse entstammen sowie zu einem Flächenbilde geformt werden, welches bei einer Temperatur zwischen der Glastemperatur (Tg) und der Schmelztemperatur des oder der eingesetzten Polymer(e) auf mindestens 10% der Dichte des oder der eingesetzten Polymer(e) verdichtet werden, sodass unter anschließender Einwirkung weiterer mechanischer Kräfte zumindest teilweise eine Aufspaltung in die Elementarfäden erfolgt. Überraschenderweise hat sich gezeigt, dass durch die Einwirkung einer Temperatur in dem genannten Bereich und der Verdichtung über die genannte Grenze sich konjugierte Garne, Fasern oder Filamente aus miteinander unverträglichen Polymeren nahezu vollständig in ihre Elementarfäden aufspalten lassen und Garne, Fasern oder Filamente aus miteinander verträglichen Polymeren zumindest teilweise eine Splittung in ihre Elementarfäden zeigen.According to the invention, the object is achieved according to the preamble by yarns, fibers or filaments which are formed from at least two filaments and which originate from a common spinneret and are formed to form a surface which is at a temperature between the glass transition temperature (T g ) and the melting temperature of the or the polymer (s) used are compressed to at least 10% of the density of the polymer (s) used, so that subsequent mechanical action at least partially results in a splitting into the filaments. Surprisingly, it has been shown that by the action of a temperature in the range mentioned and the compression above the limit, conjugated yarns, fibers or filaments of mutually incompatible polymers can be almost completely split into their filaments and yarns, fibers or filaments of mutually compatible polymers at least partially show a split in their filaments.

Vorteilhafterweise wird das Verfahren so durchgeführt, dass die Verdichtung bei einer Temperatur bis max. 10°C unter der Schmelztemperatur des Polymeren mit der niedrigsten Schmelztemperatur vorgenommen wird.
Dadurch lässt sich ein maximales Splittungsergebnis erzielen, ohne dass es zu einem Verschmelzen der Garne, Fasern oder Filamente in dem Flächengebilde kommt.The method is advantageously carried out in such a way that the compression at a temperature of up to max. 10 ° C below the melting temperature of the polymer with the lowest melting temperature.
This enables a maximum splitting result to be achieved without the yarns, fibers or filaments fusing in the fabric.

Besonders bevorzugt ist ein Verfahren, bei dem das Ausgangsflächengebilde auf eine Dichte von mindestens 15% der Dichte des oder der eingesetzten Polymer(e) komprimiert wird. Bei diesem Komprimierungsgrad lassen sich bei Garnen, Fasern oder Filamenten aus miteinander unverträglichen Polymeren Spaltgrade größer 99% erzielen, bei einer Reduzierung des Energieaufwandes für eine Hochdruckwasserstrahlbehandlung. Es sind gegenüber einer aus dem Stand der Technik bekannten Hochdruckwasserstrahl-Splittung und - Verfestigung nur noch zwei Behandlungsstufen erforderlich.A method in which the starting sheet is particularly preferred to a density of at least 15% of the density of the one or more Polymer (s) is compressed. At this level of compression, Yarns, fibers or filaments made of mutually incompatible polymers Achieve gaps greater than 99% with a reduction in energy consumption for high pressure water jet treatment. They are opposite one from the State of the art high pressure water jet splitting and Consolidation only requires two treatment stages.

Vorteilhafterweise wird die Komprimierung des Ausgangsflächengebildes mit Hilfe eines Walzenkalanders vorgenommen. Diese Art der Komprimierung lässt sich besonders einfach in ein kontinuierliches Fertigungsverfahren integrieren.Advantageously, the compression of the starting fabric is also Made using a roller calender. This type of compression leaves integrate particularly easily into a continuous manufacturing process.

Vorteilhafterweise wird die Aufspaltung in die Elementarfäden mittels einer Hydrofluidbehandlung bei Drücken von 120 - 500 bar vorgenommen. Die Hydrofluidbehandlung bei Drücken von 120 - 500 bar führt, je nach Zusammensetzung der konjugierten Garne, Fasern oder Filamente zu einer zumindest teilweisen bis zu einer nahezu vollständigen Aufspaltung in die Elementarfäden und zu einer Verwicklung und Verfestigung des daraus bestehenden Flächengebildes.The splitting into the filaments is advantageously carried out by means of a Hydrofluid treatment carried out at pressures of 120 - 500 bar. The Hydrofluid treatment at pressures of 120 - 500 bar leads, depending on Composition of the conjugated yarns, fibers or filaments into one at least partially up to an almost complete split into the Filaments and to entangle and solidify the resulting existing fabric.

Besonders bevorzugt sind die Elementarfäden der Garne, Fasern oder Filamenten als Mikroelementarfäden ausgebildet. Die Aufspaltung in Mikroelementarfäden führt zu Flächengebilden mit sehr kleinen Poren. Vorzugsweise werden in dem erfindungsgemäßen Verfahren schmelzgesponnene Filamente oder alternativ dazu Stapelfasern eingesetzt.The filaments of the yarns, fibers or are particularly preferred Filaments formed as micro-element threads. The split into Microelement threads lead to flat structures with very small pores. Preferably in the method according to the invention melt-spun filaments or alternatively staple fibers are used.

Vorteilhafterweise bestehen die aus mindestens zwei Mikroelementarfäden zusammengesetzten Garne, Fasern oder Filamente aus miteinander verträglichen Polymeren, ausgewählt aus der Gruppe Polyethylen/Polypropylen (PE/PP), Polyethylenterephthalat/Polybutylenterephthalat (PET/PBT), Polyethylenterephthalat/Polytrimethylenterephthalat (PET/PTT), Polyethylenterephthalat/recyclierten Polyester PET/R-PES), Polyethylenterephthalat/Polylactat (PET/PLA), Polyester/Copolyester (PES/CoPES), Polyamid/Copolyamid (PA/CoPA), Polyamid 6/Polyamid 66 (PA6/PA66) und Polyamid 6/Polyamid 12 (PA6/PA12). Alternativ dazu bestehen die aus mindestens zwei Mikroelementarfäden zusammengesetzten Garne, Fasern oder Filamente aus miteinander unverträglichen Polymeren, ausgewählt aus der Gruppe Polyester/Polyamid (PES/PA), Copolyester/Copolyamid (CoPES/CoPA), insbesondere Polyethylenterephthalat/Polyamid (PET/PA) und recyclierten Polyester/Polyamid (R-PES/PA). Unter recyclierten Polyester wird insbesondere aus kommerziellen PES-Flaschen gewonnenes Material verstanden.Advantageously, they consist of at least two micro-elementary threads composite yarns, fibers or filaments from each other compatible polymers, selected from the group polyethylene / polypropylene (PE / PP), polyethylene terephthalate / polybutylene terephthalate (PET / PBT), Polyethylene terephthalate / polytrimethylene terephthalate (PET / PTT), Polyethylene terephthalate / recycled polyester PET / R-PES), Polyethylene terephthalate / polylactate (PET / PLA), polyester / copolyester (PES / CoPES), polyamide / copolyamide (PA / CoPA), polyamide 6 / polyamide 66 (PA6 / PA66) and polyamide 6 / polyamide 12 (PA6 / PA12). Alternatively consist of at least two micro-element threads Yarns, fibers or filaments made of mutually incompatible polymers, selected from the group polyester / polyamide (PES / PA), Copolyester / copolyamide (CoPES / CoPA), in particular Polyethylene terephthalate / polyamide (PET / PA) and recycled polyester / polyamide (R-PES / PA). Recycled polyester is used in particular understood material obtained from commercial PES bottles.

Die Erfindung wird nachfolgend anhand von Beispielen und 8 Abbildungen näher und eingehender erläutert.The invention is illustrated below using examples and 8 illustrations explained in more detail and in more detail.

Es zeigen:

Abbildung 1 -
ein Flächengebilde in der Draufsicht erhalten gemäß Beispiel 1
Abbildung 2 -
ein Flächengebilde in der Draufsicht erhalten gemäß Beispiel 2
Abbildung 3 -
ein Flächengebilde in der Draufsicht erhalten gemäß Beispiel 3
Abbildung 4 -
ein Flächengebilde in der Draufsicht erhalten gemäß Beispiel 4
Abbildung 5a -
ein Flächengebilde in der Draufsicht erhalten gemäß Vergleichsbeispiel 1
Abbildung 5b -
ein Flächengebilde im Schnitt erhalten gemäß Vergleichsbeispiel 1
Abbildung 6 -
ein Flächengebilde in der Draufsicht erhalten gemäß Vergleichsbeispiel 2
Abbildung 7 -
ein Flächengebilde in der Draufsicht erhalten gemäß Beispiel 5
Show it:
Illustration 1 -
obtain a flat structure in plan view according to example 1
Figure 2 -
obtain a flat structure in plan view according to example 2
Figure 3 -
obtain a flat structure in plan view according to example 3
Figure 4 -
obtain a flat structure in plan view according to example 4
Figure 5a -
a planar structure obtained according to comparative example 1
Figure 5b -
a fabric in section obtained according to Comparative Example 1
Figure 6 -
a planar structure obtained according to comparative example 2
Figure 7 -
obtain a flat structure in plan view according to example 5

Beispiel 1example 1

Ein Flor wird hergestellt aus kontinuierlichen Bi-Komponenten Filamenten, deren Elementarfilamente in Form von Orangenspalten oder Kuchenstücken (Pie) quer zum Querschnitt angeordnet sind. Ein entsprechender Prozess ist in dem Dokument FR 7420254 beschrieben und wird durch Referenz eingezogen. Der Flor besteht aus Polyethylenterephthalat/Polyamid 66 (PET/PA66) die im Verhältnis von 70:30 Gew.% in den Filamenten enthalten sind. Die Polymere besitzen folgende Zusätze und Eigenschaften Polyester Polyamid Zusatz TiO2 0,8 % 0,4 % Schmelzpunkt 259°C 256°C Schmelzviskosität bei 290°C 150 Pa·s 110-1150 Pa·s Dichte 1360 kg/m3 1130 kg/m3 A pile is made from continuous bi-component filaments, the elementary filaments of which are arranged across the cross-section in the form of orange slices or pie pieces. A corresponding process is described in document FR 7420254 and is drawn in by reference. The pile consists of polyethylene terephthalate / polyamide 66 (PET / PA66) which are contained in the filaments in a ratio of 70:30% by weight. The polymers have the following additives and properties polyester polyamide Addition of TiO 2 0.8% 0.4% melting point 259 ° C 256 ° C Melt viscosity at 290 ° C 150 Pa · s 110-1150 Pa · s density 1360 kg / m 3 1130 kg / m 3

Nach der Trocknung der Ausgangspolymeren werden diese bei ca. 285°C für das PET und 280°C für das PA66 extrudiert und durch einen Spinnkopf, der bei einer Temperatur von 285°C betrieben wird, mit einer Spinnrate von ungefähr 4.500 m/min (75 m/s) und einem Durchsatz von etwa 1g/ Loch /min (60 g/ Loch/h) gesponnen. Die Filamente werden anschließend abgekühlt, einem Verstreckungsprozess unterzogen und zu einem Flor abgelegt, wie es in dem vorgenannten Dokument FR 7420254 bereits beschrieben ist. Der Flor hat ein Flächengewicht von ca. 130 g/m2 und wird direkt nach der Florbildung einem Kalander mit zwei auf 160°C erhitzten Metallwalzen zugeführt, die einen Pressdruck von 15 daN/cm Breite besitzen und mit einer Geschwindigkeit von 10 m/min (600 m/h) arbeiten. Die Kalandrierung führt zu einer Dichte von 570 kg/m3 (44,15% der Dichte der Polymeren) des Flächengebildes. Der kombinierte Effekt von Temperatur und Druck sowie die Scherkräfte während des Kalandrierprozesses führen zu einem Vorspalten der Filamente.After the starting polymers have dried, they are extruded at approx. 285 ° C for the PET and 280 ° C for the PA66 and through a spinning head, which is operated at a temperature of 285 ° C, at a spinning rate of approximately 4,500 m / min ( 75 m / s) and a throughput of about 1 g / hole / min (60 g / hole / h). The filaments are then cooled, subjected to a drawing process and laid down into a pile, as already described in the aforementioned document FR 7420254. The pile has a basis weight of approx. 130 g / m 2 and is fed directly to the calender with two metal rollers heated to 160 ° C., which have a pressure of 15 daN / cm width and at a speed of 10 m / min (600 m / h) work. The calendering leads to a density of 570 kg / m 3 (44.15% of the density of the polymers) of the fabric. The combined effect of temperature and pressure as well as the shear forces during the calendering process lead to a pre-splitting of the filaments.

Nach der Kalandrierung wird der Flor durch die Behandlung mit Hochdruckwasserstrahlen nahezu komplett in die Elementar-Mikrofilamente gespalten und diese verwirbelt sowie dadurch verfestigt. Die Bedingungen und die Mittel für die Durchführung der hydraulischen Verfestigung entsprechen im Wesentlich den im Dokument FR 7420254 beschriebenen. Nach der Aufspaltung haben die Elementarfilamente einen Titer von 0,15 dTex.After calendering, the pile is treated with High-pressure water jets almost completely into the elementary microfilaments split and swirled and thereby solidified. The conditions and the means for carrying out the hydraulic consolidation correspond to Essential to that described in document FR 7420254. After The elementary filaments have a titer of 0.15 dTex.

Beispiel 2Example 2

Ein kontinuierliches Bi-Komponenten Filament bestehend aus Polyethylenterephthalat/Polyamid 6 (PET/PA6) bei dem die Elementarfilamente abwechselnd in Form von Kuchenstücken betrachtet über den Querschnitt angeordnet sind wird nach dem bereits erwähnten Prozess gemäß FR 7420254 hergestellt. In Abweichung zu Bespiel 1 wird das PA 6 anbei 260°C extrudiert. Die anderen Spinnbedingungen entsprechen dem Beispiel 1. Polyester Polyamid Zusatz TiO2 0,8 % 0,4 % Schmelzpunkt 259°C 224°C Schmelzviskosität bei 290°C 150 Pa·s Schmelzviskosität bei 260°C 160 Pa·s Dichte 1360 kg/m3 1130 kg/m3 A continuous bi-component filament consisting of polyethylene terephthalate / polyamide 6 (PET / PA6) in which the elementary filaments are alternately arranged in the form of cake pieces viewed across the cross section is produced according to the previously mentioned process according to FR 7420254. In deviation from example 1, the PA 6 is extruded at 260 ° C. The other spinning conditions correspond to example 1. polyester polyamide Addition of TiO 2 0.8% 0.4% melting point 259 ° C 224 ° C Melt viscosity at 290 ° C 150 Pa · s Melt viscosity at 260 ° C 160 Pa · s density 1360 kg / m 3 1130 kg / m 3

Die Kalandrierbedingungen werden simuliert, indem ein Filament zwischen zwei auf 180°C erhitzten Platten mit einem Druck von 300 bar gepresst wird, der kombinierte Effekt von Temperatur und Druck führt zu einer Vorspaltung der Filamente.The calendering conditions are simulated by placing a filament between two plates heated to 180 ° C are pressed at a pressure of 300 bar, the combined effect of temperature and pressure leads to pre-splitting of filaments.

Beispiel 3Example 3

Aus Bi-Komponenten Stapelfasern wird ein Flor hergestellt. Die Stapelfasern weisen einen V-förmigen Querschnitt des Polyethylenterephthalats auf, an dessen Enden Polyamid 6 Komponenten angeordnet sind. Der erhaltene Flor hat ein Flächengewicht von 50 g/m2 und wird direkt nach dem Florbildungsprozess zwischen zwei auf 180°C beheizten Platten mit einem Pressdruck von 300 bar gepresst. Der kombinierte Effekt von Temperatur und Druck führt zu einer Vorspaltung der Filamente.A pile is made from bi-component staple fibers. The staple fibers have a V-shaped cross section of the polyethylene terephthalate, at the ends of which polyamide 6 components are arranged. The pile obtained has a weight per unit area of 50 g / m 2 and is pressed directly after the pile formation process between two plates heated to 180 ° C. with a pressure of 300 bar. The combined effect of temperature and pressure leads to a pre-splitting of the filaments.

Beispiel 4Example 4

Ein Vliesstoffflor hergestellt aus kontinuierlichen kojugierten Filamenten, die aus Polyethylenterephthalat/Polybutylenterephthalat (PET/PBT) bestehen und deren Anteil 70:30 Gew.% beträgt, werden analog des im Dokument FR 7420254 beschriebenen Prozesses hergestellt. Das PET entspricht Beispiel 1 und auch die anderen Spinnbedingungen sind identisch mit denen in Beispiel 1. Das PBT wird extrudiert bei 250°C. PET PBT Zusatz TiO2 0,8 % 0,4 % Schmelzpunkt 259°C 225°C Schmelzviskosität bei 290°C 150 Pa·s 350 Pa·s Dichte 1360 kg/m3 1300 kg/m3 A nonwoven fabric pile made from continuous conjugated filaments, which consist of polyethylene terephthalate / polybutylene terephthalate (PET / PBT) and whose proportion is 70:30% by weight, is produced analogously to the process described in document FR 7420254. The PET corresponds to Example 1 and the other spinning conditions are identical to those in Example 1. The PBT is extruded at 250 ° C. PET PBT Addition of TiO 2 0.8% 0.4% melting point 259 ° C 225 ° C Melt viscosity at 290 ° C 150 Pa · s 350 Pa · s density 1360 kg / m 3 1300 kg / m 3

Der erhaltene Flor hat ein Flächengewicht von 170 g/m2 und wird direkt nach der Florbildung zwischen zwei Platten bei einer Temperatur von 200°C mit einem Druck von 400 bar gepresst. Die Dichte des Flors erreicht dadurch 770 kg/m3 (57,38% der Dichte der Polymeren) . Der kombinierte Effekt von Temperatur und Druck führt zu einer Vorspaltung der Filamente.The pile obtained has a weight per unit area of 170 g / m 2 and is pressed immediately after the pile formation between two plates at a temperature of 200 ° C. with a pressure of 400 bar. The density of the pile thus reaches 770 kg / m 3 (57.38% of the density of the polymers). The combined effect of temperature and pressure leads to a pre-splitting of the filaments.

Vergleichsbeispiel 1Comparative Example 1

Ein kontinuierlicher Flor mit der gleichen Filamentzusammensetzung und Anordnung wird hergestellt unter den gleichen Spinnbedingungen wie in Beispiel 4 beschrieben. Dieser Flor wird direkt nach der Florlegung in einem Ofen auf 200°C für 30 Sekunden erhitzt. Die Dichte des Flors beträgt 110 kg/m3 (8,2% der Dichte der Polymeren). Nach dieser Behandlung wird der Flor einer hydraulischen Verfestigung unter den Bedingungen und mit den Mitteln im Wesentlichen vergleichbar mit dem beschriebenen Dokument FR 7420254 behandelt. Der Flor, der nur einer Temperaturbehandlung ausgesetzt war, zeigt keine Spaltung in die Elementarfilamente.A continuous pile with the same filament composition and arrangement is produced under the same spinning conditions as described in Example 4. This pile is heated in an oven to 200 ° C. for 30 seconds immediately after the pile is laid. The density of the pile is 110 kg / m 3 (8.2% of the density of the polymers). After this treatment, the pile of a hydraulic consolidation is treated under the conditions and with the means essentially comparable to the document FR 7420254 described. The pile, which was only subjected to a thermal treatment, shows no splitting in the elementary filaments.

Vergleichsbeispiel 2Comparative Example 2

Ein kontinuierlicher Flor von Filamenten mit der gleichen Faserzusammensetzung und Anordnung wird unter den im Beispiel 4 beschriebenen Spinnbedingungen hergestellt. Der Flor wird direkt nach der Florlegung bei Raumtemperatur mit einem Druck von 400 bar gepresst. Die Dichte des Flors erreicht dadurch 370 kg/m3 (28,65% der Dichte der Polymeren). Unter diesen Bedingungen wird keine Aufspaltung in die Elementarfilamente erzielt. A continuous pile of filaments with the same fiber composition and arrangement is produced under the spinning conditions described in Example 4. The pile is pressed immediately after laying at room temperature with a pressure of 400 bar. The density of the pile thus reaches 370 kg / m 3 (28.65% of the density of the polymers). Under these conditions, no splitting into the elementary filaments is achieved.

Beispiel 5Example 5

Ein Flor wird hergestellt aus Bi-Komponenten Filamenten in Orangenspalten-Anordnung der Elementarfilamenten entsprechend dem Prozess beschrieben im Dokument FR 7420254. Die Filamente bestehen aus Polyethylenterephthalat/Polytrimethylenterephthalat (PET/PTT) mit einem Gewichtsanteil von 70:30%. Das PTT wird bei 250°C extrudiert. Das PET und die Spinnbedingungen sind identisch mit denen im Beispiel 1 beschriebenen. PET PTT Zusatz TiO2 0,8 % Schmelzpunkt 259°C 240°C Schmelzviskosität bei 290°C 150 Pa·s 500 Pa·s Dichte 1360 kg/m3 1350 kg/m3 A pile is made from bi-component filaments in an orange slit arrangement of the elementary filaments according to the process described in document FR 7420254. The filaments consist of polyethylene terephthalate / polytrimethylene terephthalate (PET / PTT) with a weight fraction of 70: 30%. The PTT is extruded at 250 ° C. The PET and the spinning conditions are identical to those described in Example 1. PET PTT Addition of TiO 2 0.8% melting point 259 ° C 240 ° C Melt viscosity at 290 ° C 150 Pa · s 500 Pa · s density 1360 kg / m 3 1350 kg / m 3

Der Flor hat ein Flächengewicht von 130 g/m2 und wird direkt nach der Florlegung durch Kalandrierung zwischen zwei erhitzten Metallwalzen verdichtet. Eine der Metallwalzen ist eine gravierte Walze mit 52 Zähnen/cm2, die andere eine Glattwalze, die mit einer Temperatur von 160°C betrieben wird. Bei einem Pressdruck von 30 daN/cm Breite und einer Kalandriergeschwindigkeit von 15 m/min (900 m/h) wird eine Dichte des Flors von 760 kg/m3 (56,0% der Dichte der Polymeren) erreicht. Nach der Kalandrierung wird der Flor einer Wasserstrahlbehandlung unterzogen, die zu einer Spaltung und Verwirbelung der Elementarfilamente führt.The pile has a basis weight of 130 g / m 2 and is compacted by calendering between two heated metal rollers immediately after the pile is laid. One of the metal rollers is an engraved roller with 52 teeth / cm 2 , the other a smooth roller, which is operated at a temperature of 160 ° C. With a pressing pressure of 30 daN / cm width and a calendering speed of 15 m / min (900 m / h), a density of the pile of 760 kg / m 3 (56.0% of the density of the polymers) is achieved. After calendering, the pile is subjected to a water jet treatment, which leads to a splitting and swirling of the elementary filaments.

Claims (10)

Verfahren zur Herstellung eines Flächengebildes aus zumindest teilweise gesplitteten Garnen, Fasern oder Filamenten, dadurch gekennzeichnet, dass aus Garnen, Fasern oder Filamenten, die aus mindestens zwei Elementarfäden gebildet sind, die einer gemeinsamen Spinndüse entstammen und zu einem Flächengebilde geformt werden, welches bei einer Temperatur zwischen der Glastemperatur (Tg) und der Schmelztemperatur des oder der eingesetzten Polymer(e) auf eine Dichte von mindestens 10% der Dichte des oder der eingesetzten Polymer(e) verdichtet wird, sodass unter anschließender Einwirkung weiterer mechanischer Kräfte zumindest teilweise eine Aufspaltung in die Elementarfäden erfolgt.Method for producing a flat structure from at least partially split yarns, fibers or filaments, characterized in that from yarns, fibers or filaments which are formed from at least two filaments which originate from a common spinneret and are formed into a flat structure which is heated at a temperature between the glass transition temperature (T g ) and the melting temperature of the polymer (s) used is compressed to a density of at least 10% of the density of the polymer (s) used, so that subsequent mechanical action at least partially causes a splitting into the filaments are done. Verfahren nach Anspruch 1, dadurch gekennzeichnet, dass die mechanische Verformung bei einer Temperatur bis maximal 10°C unter der Schmelztemperatur des Polymeren mit der niedrigsten Schmelztemperatur vorgenommen wird.A method according to claim 1, characterized in that the mechanical deformation is carried out at a temperature up to a maximum of 10 ° C below the melting temperature of the polymer with the lowest melting temperature. Verfahren nach Anspruch 1 oder 2, dadurch gekennzeichnet, dass das Ausgangsflächengebilde auf eine Dichte von mindestens 15% der Dichte des oder der eingesetzten Polymer(e) komprimiert wird.A method according to claim 1 or 2, characterized in that the starting sheet is compressed to a density of at least 15% of the density of the polymer (s) used. Verfahren nach einem der Ansprüche 1 bis 3, dadurch gekennzeichnet, dass die Komprimierung mit Hilfe eines Walzenkalanders vorgenommen wird.Method according to one of claims 1 to 3, characterized in that the compression is carried out with the aid of a roller calender. Verfahren nach einem der Ansprüche 1 bis 4, dadurch gekennzeichnet, dass die Aufspaltung in die Elementarfäden mittels einer Hydrofluidbehandlung bei Drücken von 120 bis 500 bar erfolgt. Method according to one of claims 1 to 4, characterized in that the splitting into the filaments takes place by means of a hydrofluid treatment at pressures from 120 to 500 bar. Verfahren nach einem der Ansprüche 1 bis 5, dadurch gekennzeichnet, dass die Elementarfäden als Mikroelementarfäden ausgebildet sind.Method according to one of claims 1 to 5, characterized in that the filaments are designed as micro-filaments. Verfahren nach einem der Ansprüche 1 bis 6, dadurch gekennzeichnet, dass schmelzgesponnene Filamente eingesetzt werden.Method according to one of claims 1 to 6, characterized in that melt-spun filaments are used. Verfahren nach einem der Ansprüche 1 bis 6, dadurch gekennzeichnet, dass Stapelfasern eingesetzt werden.Method according to one of claims 1 to 6, characterized in that staple fibers are used. Verfahren nach einem der Ansprüche 1 bis 8, dadurch gekennzeichnet, dass die Garne, Fasern oder Filamente aus mindestens zwei Mikro-Elementarfäden bestehen ausgewählt aus der Gruppe der miteinander verträglichen Polymerpaare Polyethylen/Polypropylen, Polyethylenterephthalat/Polybutylenterephthalat, Polyethylenterephthalat/Polytrimethylenterephthalat, Polyethylenterephthalat/recyclierten Polyester, Polyethylenterephthalat/Polylactat, Polyester/Copolyester, Polyamid/Copolyamid, Polyamid 6/Polyamid 66 und Polyamid 6/Polyamid 12.Method according to one of claims 1 to 8, characterized in that the yarns, fibers or filaments consist of at least two micro-elementary threads selected from the group of mutually compatible polymer pairs polyethylene / polypropylene, polyethylene terephthalate / polybutylene terephthalate, polyethylene terephthalate / polytrimethylene terephthalate, polyethylene terephthalate / recycled polyester , Polyethylene terephthalate / polylactate, polyester / copolyester, polyamide / copolyamide, polyamide 6 / polyamide 66 and polyamide 6 / polyamide 12. Verfahren nach einem der Ansprüche 1 bis 8, dadurch gekennzeichnet, dass die Garne, Fasern oder Filamente aus mindestens zwei Mikro-Elementarfäden bestehen ausgewählt aus der Gruppe der miteinander unverträglichen Polymerpaare Polyester/Polyamid, Copolyester/Copolyamid, insbesondere Polyethylenterephthalat/Polyamid und recyclierten Polyester/Polyamid.Method according to one of claims 1 to 8, characterized in that the yarns, fibers or filaments consist of at least two micro-elementary threads selected from the group of mutually incompatible polymer pairs polyester / polyamide, copolyester / copolyamide, in particular polyethylene terephthalate / polyamide and recycled polyester / Polyamide.
EP03021590A 2002-12-11 2003-09-25 Method of producing a flat sheet structure from at least partially split yarns, fibres or filaments Expired - Fee Related EP1428919B1 (en)

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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1619283A1 (en) * 2004-07-24 2006-01-25 Carl Freudenberg KG Multicomponent spunbond nonwoven fabric, process for making the same and the use thereof
WO2009030317A1 (en) * 2007-09-03 2009-03-12 Carl Freudenberg Kg Method for producing a textile fabric consisting of at least partially split yarns, fibers or filaments and device for the production thereof
WO2009030300A1 (en) * 2007-08-28 2009-03-12 Carl Freudenberg Kg Method for the production of a tear propagation-resistant textile sheet material, tear propagation-resistant textile sheet material and use thereof

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2008060830A2 (en) * 2006-11-14 2008-05-22 Arkema Inc. Multi-component fibers containing high chain-length polyamides
DE102015010129A1 (en) * 2015-08-10 2017-03-02 Carl Freudenberg Kg Process for the preparation of a structured microfilament nonwoven fabric
CN110629363A (en) * 2019-08-26 2019-12-31 宁波大千纺织品有限公司 Memory type high-grade elastic knitted fabric and preparation method thereof

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5759926A (en) * 1995-06-07 1998-06-02 Kimberly-Clark Worldwide, Inc. Fine denier fibers and fabrics made therefrom
US5895710A (en) * 1996-07-10 1999-04-20 Kimberly-Clark Worldwide, Inc. Process for producing fine fibers and fabrics thereof
US5899785A (en) * 1996-06-17 1999-05-04 Firma Carl Freudenberg Nonwoven lap formed of very fine continuous filaments
US5935883A (en) * 1995-11-30 1999-08-10 Kimberly-Clark Worldwide, Inc. Superfine microfiber nonwoven web

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4908176A (en) * 1986-03-20 1990-03-13 Mitsubishi Yuka Badische Co., Ltd. Process for producing moldable non-woven fabrics
JP3270340B2 (en) * 1996-09-24 2002-04-02 帝人株式会社 Split fiber and method for producing the same
JP4130035B2 (en) * 1998-04-30 2008-08-06 帝人ファイバー株式会社 Multi-divided hollow polyester fiber and woven / knitted fabric, artificial leather and nonwoven fabric using the fiber
KR100557271B1 (en) * 1998-04-30 2006-03-07 데이진 가부시키가이샤 Divisible hollow copolyester fibers, and divided copolyester fibers, woven or knitted fabric, artificial leather and nonwoven fabric comprising same
ATE351934T1 (en) * 1998-10-06 2007-02-15 Hills Inc SPLITCHABLE ELASTOMER MULTI-COMPONENT FIBERS
US6410139B1 (en) * 1999-03-08 2002-06-25 Chisso Corporation Split type conjugate fiber, method for producing the same and fiber formed article using the same
EP1091028B1 (en) * 1999-09-15 2005-01-05 Fiber Innovation Technology, Inc. Splittable multicomponent polyester fibers
DE19947869A1 (en) * 1999-10-05 2001-05-03 Freudenberg Carl Fa Synthetic leather
JP4336435B2 (en) * 1999-12-24 2009-09-30 帝人ファイバー株式会社 Split type composite fiber

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5759926A (en) * 1995-06-07 1998-06-02 Kimberly-Clark Worldwide, Inc. Fine denier fibers and fabrics made therefrom
US5935883A (en) * 1995-11-30 1999-08-10 Kimberly-Clark Worldwide, Inc. Superfine microfiber nonwoven web
US5899785A (en) * 1996-06-17 1999-05-04 Firma Carl Freudenberg Nonwoven lap formed of very fine continuous filaments
US5895710A (en) * 1996-07-10 1999-04-20 Kimberly-Clark Worldwide, Inc. Process for producing fine fibers and fabrics thereof

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1619283A1 (en) * 2004-07-24 2006-01-25 Carl Freudenberg KG Multicomponent spunbond nonwoven fabric, process for making the same and the use thereof
US8021997B2 (en) 2004-07-24 2011-09-20 Carl Freudenberg Kg Multicomponent spunbonded nonwoven, method for its manufacture, and use of the multicomponent spunbonded nonwovens
WO2009030300A1 (en) * 2007-08-28 2009-03-12 Carl Freudenberg Kg Method for the production of a tear propagation-resistant textile sheet material, tear propagation-resistant textile sheet material and use thereof
US8382926B2 (en) 2007-08-28 2013-02-26 Carl Freudenberg Kg Tear propagation-resistant textile sheet material, method making and use thereof
CN101790605B (en) * 2007-08-28 2014-03-19 卡尔弗罗伊登柏格两合公司 Method for the production of a tear propagation-resistant textile sheet material, tear propagation-resistant textile sheet material and use thereof
WO2009030317A1 (en) * 2007-09-03 2009-03-12 Carl Freudenberg Kg Method for producing a textile fabric consisting of at least partially split yarns, fibers or filaments and device for the production thereof

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CN1506515A (en) 2004-06-23
US20040222545A1 (en) 2004-11-11
DE10258112A1 (en) 2004-07-08
EP1428919B1 (en) 2011-08-10
CN1316089C (en) 2007-05-16
DE10258112B4 (en) 2007-03-22

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