EP1264025B1 - Textile fabric consisting of natural fibres - Google Patents

Textile fabric consisting of natural fibres Download PDF

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Publication number
EP1264025B1
EP1264025B1 EP01916922A EP01916922A EP1264025B1 EP 1264025 B1 EP1264025 B1 EP 1264025B1 EP 01916922 A EP01916922 A EP 01916922A EP 01916922 A EP01916922 A EP 01916922A EP 1264025 B1 EP1264025 B1 EP 1264025B1
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EP
European Patent Office
Prior art keywords
fibers
fibres
fibre
textile fabric
bast
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EP01916922A
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German (de)
French (fr)
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EP1264025A1 (en
Inventor
Klaus Sommer
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Vliestec AG
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Vliestec AG
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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
    • 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
    • D04H1/42—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
    • 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
    • D04H1/4326—Condensation or reaction polymers
    • D04H1/435—Polyesters

Definitions

  • the invention relates to a textile fabric Natural fibers, preferably bast fiber or mixtures of Bast fibers that have been solidified by fluid jets.
  • Nonwovens are made of which natural fibers, plastic fibers and may contain glass fibers.
  • the one for the layers Nonwovens are used individually by needling solidified. Due to needle breakage remaining in the needled nonwoven inevitably metallic needle particles back. These can lead to considerable problems lead in subsequent processing steps.
  • Thermally bonded natural fiber nonwovens are also known. These offer the advantage that even shorter fibers can be used.
  • the fibers are made before or provided with a binder after laying the fleece or in a mixture with thermoplastic binding fibers processed. The supply of heat activates this Binder or leads to the melting of the binding fibers and thereby to solidify the fleece.
  • nonwoven Such a nonwoven is described in DE 196 02 551 C1 described.
  • the mat shown consists of a Fiber mixture of natural and thermoplastic binding fibers.
  • binding fibers or Binder Through the use of binding fibers or Binder is a pure reuse of the Nonwovens not possible.
  • the release can possibly of chemicals used to bind during the Use cannot be excluded.
  • thermoplastic binding fibers or thermoplastic binder when using natural fibers makes the manufactured products expensive and pure Recycling impossible.
  • the invention has for its object textile fabrics to create from natural fibers, preferably bast fibers, that do not require an additional binder that Allow processing of short fibers and residual dust and the Give fabrics good strength values.
  • natural fibers preferably bast fibers form excellent textile fabrics using the fluid jet consolidation process processed.
  • bast fibers are relatively stiff and with a lot of woody parts, short fibers and dusts are afflicted with a high load on the filtration system, which cleans the working medium from foreign substances, to prevent clogging of the high pressure nozzles , it was surprisingly found that the high load on the filtration system failed to materialize.
  • the natural fibers are solidified, preferably bast fibers to textile fabrics due to fluid jets as well as fiber entanglement Fiber matting due to the actually disruptive proportions Short fibers and fiber dusts.
  • Fiber matting occurs through the short fibers and dusts under the influence of the high pressure fluid jets a decrease in the stiffness of the woody components towards greater flexibility, which too contributes to an improvement in the formation of fleece.
  • hemp fibers which is based on the tensile strengths that can be achieved.
  • the fabric according to the invention consists of natural fibers, preferably made of bast fibers and in particular Hemp fibers which contain a high proportion of residues from the Fiber digestion, such as short fibers, fiber dusts and others Include fiber accompanying substances.
  • feedstocks for the textile fabrics according to the invention can can be manufactured and purchased at a reasonable price.
  • Fleece laying can be mechanical, aerodynamic or hydrodynamic take place, the bonding of the fleece takes place by fluid jets, preferably by water jets.
  • fluid jets preferably by water jets.
  • Residues such as short fibers, fiber dusts, etc. are collected and together with already solidified fleece particles, which are crushed and made up accordingly supplied before or during the consolidation of the natural fibers. Contrary to current known methods, are positive effects on the Properties of the textile fabrics according to the invention achieved.
  • Fluid jet-consolidated textile fabrics made of preferably Coarse bast fibers of short length were previously considered cannot be produced because bast fibers have poor processing properties due to the poor intertwining of the fibers have.
  • the textile fabric according to the invention the very good felting properties of the bast fibers, especially when using coarse fibers with large Scattering range used for the fineness, where matting through the introduction of production residues is further strengthened.
  • the textile fabrics according to the invention can in their structure be both uniform, as well as from one Core layer consist of one or both sides with Cover layers is equipped. You can at one multilayer structure both core and the Top layers made of pure bast fibers, only different Composition and / or compression exist. As well can be made of synthetic resin or fibers in the outer layers inorganic fibers are incorporated. Preferably only bast fibers are used to build up the core layer.
  • the structure of the multi-layer textile fabric can run continuously through a multiple pass the consolidation device take place at the new Fibers fed to the fabric already formed become.
  • the The core layer-forming fleece is already prefabricated Fleece laid on and then by fluid jet consolidation with each other get connected.
  • the weight per unit area of the textile fabrics can be between 30 to 3000 g / m and the tensile strength between 100 up to 25000 N / m can be set.
  • the textile fabrics according to the invention have a dense to open structure and are characterized by high Tensile strength.
  • the preferred construction from pure Raffia fiber opens up a wide range of applications, z. B. as a material for wall covering, as an element of a Building material system, for the production of open to diffusion Insulation materials, coating substrates, filtration nonwovens, Geotextiles, wipes, carpets, reinforcing nonwovens and as a semi-finished product for the production of molded parts.
  • the textile fabric consists of hemp fibers with high Proportion of residues from fiber digestion without the addition of binders or other fibers and solidified after water jet technology.
  • the mass per unit area is 50 g / m, the tensile strength in the longitudinal direction 600 N / m, the tensile strength in the transverse direction at 300 N / m a thickness of 0.8 mm.
  • the textile fabric is primarily suitable as a coating carrier z. B. in Combination with resin systems, as environmentally friendly Packaging material or as a layer of sandwich material.
  • the textile fabric consists of hemp fibers without Addition of binders and other fibers and was solidified by water jets.
  • the mass per unit area is 300 g / m at a thickness of 1.5 mm, the tear resistance is 7000 N / m in the longitudinal direction and in the transverse direction 5000 N / m. Due to the high compression of the nonwoven this is particularly suitable for hydroentangling as insulating fleece in flooring systems.
  • the textile fabric consists of hemp fibers with a Proportion of residues and was solidified with water jets.
  • the basis weight is 120 g / m, the tear resistance in the longitudinal direction 700 N / m and in the transverse direction 500 N / m.
  • the textile fabrics are particularly useful as coating substrates or as a replacement for reinforcement materials Glass fiber nonwovens in sandwich systems for molded parts suitable.
  • Comparative article made from regenerated cellulose fibers under the same Solidification conditions produced have significant lower strengths. So the tensile strength is only 200 N / m in the longitudinal and transverse directions.
  • Example 2 There was a textile fabric according to Example 2 used. Through special control of the hardening process or by aggregates after solidification textile fabrics have a defined surface structure given. Such structured textile fabrics are used in particular as wall coverings a wallpaper.
  • the textile fabric consists of a mixture of 50% hemp fibers and 50% PET bicomponent fibers, which be solidified by water jets.
  • the 2.5 mm thick Textile fabrics have a tensile strength of 11000 N / m in the longitudinal direction or 8000 N / m in the transverse direction. By Activation of the bicomponent fibers in the drying process the tensile strength can be increased further. This is given a special use as a reinforcing material.
  • the textile fabric consists of a mixture of 50% hemp fibers and 50% polypropylene fibers, which by Water jets were solidified.
  • the textile fabric has good mechanical properties, so tear resistance of 11000 N / m in the longitudinal direction and 8000 N / m in the transverse direction.
  • Such textile fabrics can be used well in thermoforming processes reshape. You get natural fiber reinforced Components.
  • the textile fabric was made from hemp fibers without the addition of binders or other fibers and through Water jets solidified.
  • the thickness of the fabric is 4 mm, the mass per unit area 1500 g / m, the tensile strength in the longitudinal direction 18000 N / m and in the transverse direction 15000 N / m.
  • the very high wet strength of the textile fabric enables use in special filters e.g. B. for inclusion of heavy metals in sewage sludge filtration. Further Applications are as insulation and for manufacturing of structured panels.

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  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Nonwoven Fabrics (AREA)
  • Details Of Garments (AREA)

Abstract

The invention relates to a textile fabric consisting of natural fibres, preferably bast fibres and especially hemp fibres, that are compacted by means of fluid beams. Surprisingly, coarsely retted bast fibres having a high portion of short fibres, fibre dusts and other fibre escort substances can be processed by means of fluid beam hardening to form textile fabrics having a high tear strength. Surprisingly good processing can be put down to the fact that fibre felting occurs in addition to the usual fibre interlacing caused by the short fibres and fibre dusts.

Description

Die Erfindung betrifft ein textiles Flächengebilde aus Naturfasern, vorzugsweise Bastfaser oder Mischungen aus Bastfasern, die durch Fluidstrahlen verfestigt wurden.The invention relates to a textile fabric Natural fibers, preferably bast fiber or mixtures of Bast fibers that have been solidified by fluid jets.

Für die bisher bekannten textilen Flächengebilde, die in den unterschiedlichsten Anwendungsgebieten eingesetzt werden, wurden bisher nur hochwertige Naturfasern großer Länge und großer Reinheit verwendet. Vornehmlich werden die Naturfasern in Mischungen mit Trägerfasern aus Kunstharzen verarbeitet. For the previously known textile fabrics, which in used in a wide variety of applications only high-quality natural fibers have become larger Length and great purity used. Primarily, the Natural fibers in blends with carrier fibers made of synthetic resins processed.

Grund dafür ist, dass die einzelnen Naturfasern sehr geringe Reibungskräfte untereinander besitzen und einen hohen Anteil an sehr kurzen Fasern und Reststäuben, der mehr als 25 % ausmacht, aufweisen. Wurden Naturfasern mit kurzen Faserlängen und/oder größeren Fremd- und Reststoffanteilen eingesetzt, so kam es oft zu Havarien in den Verfestigungsagregaten. Deshalb wurden kürzere Fasern in der Regel nur unter Zugabe von Trägerfasern aus Kunstharzen verarbeitet.The reason for this is that the individual natural fibers are very low Have frictional forces with each other and a high one Proportion of very short fibers and residual dust, which more than Accounts for 25%. Were natural fibers with short Fiber lengths and / or larger foreign and residual material shares used, there were often accidents in the Verfestigungsagregaten. That is why shorter fibers were used in usually only with the addition of synthetic fibers processed.

So wird in der DE 94 22 147 U1 ein Mehrschichtkörper beschrieben, welcher aus verschiedenen Schichten von Vliesstoffen besteht, welche Naturfasern, Kuststofffasern und Glasfasern enthalten können. Die für die Schichten verwendeten Vliesstoffe werden einzeln durch Vernadeln verfestigt. Durch auftretenden Nadelbruch verbleiben im vernadelten Vliesstoff unvermeidlich metallische Nadelpartikel zurück. Diese können zu teilweise erheblichen Problemen in nachfolgenden Verarbeitungsschritten führen.DE 94 22 147 U1 describes a multilayer body described, which consists of different layers of Nonwovens are made of which natural fibers, plastic fibers and may contain glass fibers. The one for the layers Nonwovens are used individually by needling solidified. Due to needle breakage remaining in the needled nonwoven inevitably metallic needle particles back. These can lead to considerable problems lead in subsequent processing steps.

Ebenso sind thermisch verfestigte Naturfaservliese bekannt. Diese bieten den Vorteil, dass auch kürzere Fasern eingesetzt werden können. Die Fasern werden vor, während oder nach der Vlieslegung mit einem Bindemittel versehen oder in Mischung mit thermoplastischen Bindefasern verarbeitet. Die Zuführung von Wärme aktiviert das Bindemittel bzw. führt zum Aufschmelzen der Bindefasern und dadurch zur Verfestigung des Vlieses. Thermally bonded natural fiber nonwovens are also known. These offer the advantage that even shorter fibers can be used. The fibers are made before or provided with a binder after laying the fleece or in a mixture with thermoplastic binding fibers processed. The supply of heat activates this Binder or leads to the melting of the binding fibers and thereby to solidify the fleece.

Ein solcher Vliesstoff wird in der DE 196 02 551 C1 beschrieben. Die dargestellte Matte besteht aus einem Fasergemisch von Natur- und thermoplastischen Bindefasern. Zudem wird eine Deckschicht aus thermoplastischen Fasern verwendet. Durch den Einsatz von Bindefasern bzw. Bindemitteln ist eine sortenreine Wiederverwendung der Vliesstoffe nicht möglich. Zudem kann das Freiwerden eventuell von zur Bindung eingesetzter Chemikalien während des Gebrauches nicht ausgeschlossen werden.Such a nonwoven is described in DE 196 02 551 C1 described. The mat shown consists of a Fiber mixture of natural and thermoplastic binding fibers. In addition, a top layer of thermoplastic fibers used. Through the use of binding fibers or Binder is a pure reuse of the Nonwovens not possible. In addition, the release can possibly of chemicals used to bind during the Use cannot be excluded.

Gleiche Aussagen sind zu der in der DE 31 50 547 A1 beschriebenen Formmasse auf Basis thermoplastischer Kunstharze zu sagen.The same statements apply to that described in DE 31 50 547 A1 Molding compound based on thermoplastic synthetic resins accept.

Das Arbeiten mit thermoplastischen Bindefasern bzw. thermoplastischen Bindemittel beim Einsatz von Naturfasern macht die hergestellten Produkte teuer und ein sortenreines Recycling unmöglich.Working with thermoplastic binding fibers or thermoplastic binder when using natural fibers makes the manufactured products expensive and pure Recycling impossible.

Der Erfindung liegt die Aufgabe zugrunde, textile Flächengebilde aus Naturfasern, vorzugsweise Bastfasern zu schaffen, die ohne ein zusätzliches Bindemittel auskommen, das Verarbeiten von Kurzfasern und Reststäuben erlauben und den Flächengebilden gute Festigkeitswerte verleihen.The invention has for its object textile fabrics to create from natural fibers, preferably bast fibers, that do not require an additional binder that Allow processing of short fibers and residual dust and the Give fabrics good strength values.

Es wurde erfindungsgemäß gefunden, das Naturfasern, vorzugsweise Bastfasern sich vorzüglich zu textilen Flächengebilden unter Einsatz des Fluidstrahlverfestigungsverfahrens verarbeiten lassen. Obwohl Bastfasern relativ steif und mit viel verholzten Teilen, Kurzfasern und Stäuben behaftet sind, die eine hohe Belastung der Filtrationsanlage, welche das Arbeitsmedium von den Fremdstoffen reinigt, um ein Verstopfen der Hochdruckdüsen zu verhindern, erwarten ließen, konnte überraschend festgestellt werden, dass die hohe Belastung der Filtrationsanlage ausblieb.It was found according to the invention that natural fibers, preferably bast fibers form excellent textile fabrics using the fluid jet consolidation process processed. Although bast fibers are relatively stiff and with a lot of woody parts, short fibers and dusts are afflicted with a high load on the filtration system, which cleans the working medium from foreign substances, to prevent clogging of the high pressure nozzles , it was surprisingly found that the high load on the filtration system failed to materialize.

Überraschenderweise tritt bei der Verfestigung der Naturfasern, vorzugsweise Bastfasern zu textilen Flächengebilden durch Fluidstrahlen neben der Faserverschlingung auch eine Faserverfilzung durch die eigentlich störenden anteiligen Kurzfasern und Faserstäube auf. Neben der nicht zu erwartenden Faserverfilzung durch die Kurzfasern und Stäube tritt unter dem Einfluss der unter Hochdruck stehenden Fluidstrahlen eine Abnahme der Steifigkeit der holzigen Bestandteile hin zu einer größeren Flexibilität ein, was ebenfalls zu einer Verbesserung der Vliesbildung beiträgt. Besonders gute Ergebnisse werden mit Hanffasern erzielt, was sich anhand der erreichbaren Reißfestigkeiten belegen läßt.Surprisingly, when the natural fibers are solidified, preferably bast fibers to textile fabrics due to fluid jets as well as fiber entanglement Fiber matting due to the actually disruptive proportions Short fibers and fiber dusts. In addition to the unexpected Fiber matting occurs through the short fibers and dusts under the influence of the high pressure fluid jets a decrease in the stiffness of the woody components towards greater flexibility, which too contributes to an improvement in the formation of fleece. Especially good results are achieved with hemp fibers, which is based on the tensile strengths that can be achieved.

Das erfindungsgemäße Flächengebilde besteht aus Naturfasern, vorzugsweise aus Bastfasern und insbesondere aus Hanffasern welche einen hohen Anteil an Reststoffen aus dem Faseraufschluss, wie Kurzfaser, Faserstäube und sonstige Faserbegleitsubstanzen beinhalten. Diese Einsatzstoffe für die erfindungsgemäßen textilen Flächengebilde können zu einem günstigen Preis hergestellt und bezogen werden.The fabric according to the invention consists of natural fibers, preferably made of bast fibers and in particular Hemp fibers which contain a high proportion of residues from the Fiber digestion, such as short fibers, fiber dusts and others Include fiber accompanying substances. These feedstocks for the textile fabrics according to the invention can can be manufactured and purchased at a reasonable price.

Die Vlieslegung kann mechanisch, aerodynamisch oder hydrodynamisch erfolgen, die Verfestigung des Vlieses erfolgt durch Fluidstrahlen, vorzugsweise durch Wasserstrahlen. Die im Flächenbildungs- und Verfestigungdprozess anfallenden Reststoffe wie Kurzfasern, Faserstäube usw. werden gesammelt und zusammen mit bereits verfestigten Vliespartikeln, welche zerkleinert und entsprechend kofektioniert werden vor oder während der Verfestigung der Naturfasern zugeführt. Im Gegensatz zu derzeitigen bekannten Verfahren, werden durch diese Reststoffe positive Wirkungen auf die Eigenschaften der erfindungsgemäßen textilen Flächengebilde erzielt.Fleece laying can be mechanical, aerodynamic or hydrodynamic take place, the bonding of the fleece takes place by fluid jets, preferably by water jets. The occurring in the area formation and consolidation process Residues such as short fibers, fiber dusts, etc. are collected and together with already solidified fleece particles, which are crushed and made up accordingly supplied before or during the consolidation of the natural fibers. Contrary to current known methods, are positive effects on the Properties of the textile fabrics according to the invention achieved.

Fluidstrahlverfestigte textile Flächengebilde aus vorzugsweise groben Bastfasern kurzer Länge galten bisher als nicht herstellbar, da Bastfasern schlechte Verarbeitungseigenschaften durch die schlechte Verschlingung der Fasern besitzen. Beim erfindungsgemäßen textilen Flächengebilde werden die sehr guten Verfilzungseigenschaften der Bastfasern, besonders bei Verwendung von groben Fasern mit großem Streubereich hinsichtlich der Feinheit ausgenutzt, wobei die Verfilzung durch die Einbringung von Produktionsreststoffen weiter verstärkt wird.Fluid jet-consolidated textile fabrics made of preferably Coarse bast fibers of short length were previously considered cannot be produced because bast fibers have poor processing properties due to the poor intertwining of the fibers have. In the textile fabric according to the invention the very good felting properties of the bast fibers, especially when using coarse fibers with large Scattering range used for the fineness, where matting through the introduction of production residues is further strengthened.

Die erfindungsgemäßen textilen Flächengebilde können in ihrem Aufbau sowohl einheitlich sein, als auch aus einer Kernschicht bestehen, die ein- oder beidseitig mit Deckschichten ausgestattet ist. Dabei können bei einem mehrschichtigen Aufbau sowohl Kern- als auch die Deckschichten aus reinem Bastfasern, nur unterschiedlicher Zusammensetzung und/oder Verdichtung bestehen. Ebenso können in die Deckschichten Fasern aus Kunstharz oder anorganischen Fasern eingearbeitet werden. Vorzugsweise werden für den Aufbau der Kernschicht nur Bastfasern eingesetzt. The textile fabrics according to the invention can in their structure be both uniform, as well as from one Core layer consist of one or both sides with Cover layers is equipped. You can at one multilayer structure both core and the Top layers made of pure bast fibers, only different Composition and / or compression exist. As well can be made of synthetic resin or fibers in the outer layers inorganic fibers are incorporated. Preferably only bast fibers are used to build up the core layer.

Der Aufbau des mehrschichtigen textilen Flächengebildes kann kontinuierlich durch einen mehrmaligen Durchlauf durch die Verfestigungseinrichtung erfolgen, bei dem jeweils neue Fasern dem schon gebildeten Flächengebilde zugeführt werden. Bei einer anderen Variante können auf das die Kernschicht bildende Vlies jeweils schon vorgefertigte Vliese aufgelegt und dann durch Fluidstrahlverfestigung miteinander verbunden werden.The structure of the multi-layer textile fabric can run continuously through a multiple pass the consolidation device take place at the new Fibers fed to the fabric already formed become. In another variant, the The core layer-forming fleece is already prefabricated Fleece laid on and then by fluid jet consolidation with each other get connected.

Das Flächengewicht der textilen Flächengebilde kann zwischen 30 bis 3000 g/m und die Reißfestigkeit zwischen 100 bis 25000 N/m eingestellt werden.The weight per unit area of the textile fabrics can be between 30 to 3000 g / m and the tensile strength between 100 up to 25000 N / m can be set.

Die erfindungsgemäßen textilen Flächengebilde besitzen eine dichte bis offene Struktur und zeichnen sich durch hohe Reißfestigkeit aus. Der vorzugsweise Aufbau aus reinen Bastfasern eröffnet eine große Palette an Einsatzgebieten, z. B. als Material zur Wandbekleidung, als Element eines Baustoffsystems, zur Herstellung von diffusionsoffenen Dämmstoffen, Beschichtungsträgern, Filtrationsvliesstoffen, Geotextilen, Wischtüchern, Teppichgründen, Armierungsvliesstoffen und als Halbzeug zur Herstellung von Formteilen.The textile fabrics according to the invention have a dense to open structure and are characterized by high Tensile strength. The preferred construction from pure Raffia fiber opens up a wide range of applications, z. B. as a material for wall covering, as an element of a Building material system, for the production of open to diffusion Insulation materials, coating substrates, filtration nonwovens, Geotextiles, wipes, carpets, reinforcing nonwovens and as a semi-finished product for the production of molded parts.

Die Erfindung soll nachfolgend an Beispielen näher erläutert werden.The invention is illustrated below using examples become.

Beispiel 1example 1

Das textile Flächengebilde besteht aus Hanffasern mit hohem Anteil an Reststoffen aus dem Faseraufschluss, hergestellt ohne Zusatz von Bindemitteln oder anderen Fasern und verfestigt nach der Wasserstrahltechnologie. Die Flächenmasse beträgt 50 g/m, die Reißfestigkeit in Längsrichtung 600 N/m, die Reißfestigkeit in Querrichtung 300 N/m bei einer Dicke von 0,8 mm. Das textile Flächengebilde ist vornehmlich geeignet als Beschichtungsträger z. B. in Kombination mit Harzsystemen, als umweltverträgliches Verpackungsmaterial oder als Schicht eines Sandwichmaterials.The textile fabric consists of hemp fibers with high Proportion of residues from fiber digestion without the addition of binders or other fibers and solidified after water jet technology. The mass per unit area is 50 g / m, the tensile strength in the longitudinal direction 600 N / m, the tensile strength in the transverse direction at 300 N / m a thickness of 0.8 mm. The textile fabric is primarily suitable as a coating carrier z. B. in Combination with resin systems, as environmentally friendly Packaging material or as a layer of sandwich material.

Beispiel 2Example 2

Das textile Flächengebilde besteht aus Hanffasern ohne Zusatz von Bindemitteln und sonstigen Fasern und wurde verfestigt mittels Wasserstrahlen. Die Flächenmasse beträgt 300 g/m bei einer Dicke von 1,5 mm, die Reißfestigkeit beträgt in Längsrichtung 7000 N/m und in Querrichtung 5000 N/m. Durch die hohe Verdichtung des Vliesstoffes bei der Wasserstrahlverfestigung ist dieser besonders geeignet als Dämmvlies in Fußbodensystemen.The textile fabric consists of hemp fibers without Addition of binders and other fibers and was solidified by water jets. The mass per unit area is 300 g / m at a thickness of 1.5 mm, the tear resistance is 7000 N / m in the longitudinal direction and in the transverse direction 5000 N / m. Due to the high compression of the nonwoven this is particularly suitable for hydroentangling as insulating fleece in flooring systems.

Beispiel 3Example 3

Das textile Flächengebilde besteht aus Hanffasern mit einem Anteil an Reststoffen und wurde mit Wasserstrahlen verfestigt. Die Flächenmasse beträgt 120 g/m, die Reißfestigkeit in Längsrichtung 700 N/m und in Querrichtung 500 N/m. Die textilen Flächengebilde sind besonders als Beschichtungsträger bzw. als Ersatz für Verstärkungsmaterialien aus Glasfaservliesstoffen in Sandwichsystemen für Formteile geeignet. The textile fabric consists of hemp fibers with a Proportion of residues and was solidified with water jets. The basis weight is 120 g / m, the tear resistance in the longitudinal direction 700 N / m and in the transverse direction 500 N / m. The textile fabrics are particularly useful as coating substrates or as a replacement for reinforcement materials Glass fiber nonwovens in sandwich systems for molded parts suitable.

Vergleichsartikel aus Regeneratzellulosefasern unter gleichen Verfestigungsbedingungen hergestellt weisen wesentlich geringere Festigkeiten auf. So beträgt die Reißfestigkeit in Längs- als auch in Querrichtung nur 200 N/m.Comparative article made from regenerated cellulose fibers under the same Solidification conditions produced have significant lower strengths. So the tensile strength is only 200 N / m in the longitudinal and transverse directions.

Beispiel 4Example 4

Es wurde ein textiles Flächengebilde gemäß Beispiel 2 eingesetzt. Durch besondere Steuerung des Verfestigungsprozesses oder durch Aggregate nach der Verfestigung wird dem textilen Flächengebilde eine definierte Oberflächenstruktur gegeben. Solche strukturierten textilien Flächengebilde finden insbesondere Anwendung als Wandbekleidung anstelle einer Tapete.There was a textile fabric according to Example 2 used. Through special control of the hardening process or by aggregates after solidification textile fabrics have a defined surface structure given. Such structured textile fabrics are used in particular as wall coverings a wallpaper.

Beispiel 5Example 5

Das textile Flächengebilde besteht aus einer Mischung von 50 % Hanffasern und 50 % PET-Bikomponentenfasern, welche durch Wasserstrahlen verfestigt werden. Das 2,5 mm dicke textile Flächengebilde besitzt eine Reißfestigkeit von 11000 N/m in Längs- bzw. 8000 N/m in Querrichtung. Durch Aktivierung der Bikomponentenfasern im Trocknungsprozeß kann die Reißfestigkeit weiter erhöht werden. Dadurch ist ein spezieller Einsatz als Verstärkungsmaterial gegeben.The textile fabric consists of a mixture of 50% hemp fibers and 50% PET bicomponent fibers, which be solidified by water jets. The 2.5 mm thick Textile fabrics have a tensile strength of 11000 N / m in the longitudinal direction or 8000 N / m in the transverse direction. By Activation of the bicomponent fibers in the drying process the tensile strength can be increased further. This is given a special use as a reinforcing material.

Beispiel 6Example 6

Das textile Flächengebilde besteht aus einer Mischung von 50 % Hanffasern und 50 % Polypropylenfasern, welche durch Wasserstrahlen verfestigt wurden. Das textile Flächengebilde besitzt gute mechanische Eigenschaften, so Reißfestigkeiten von 11000 N/m in Längs- bzw. 8000 N/m in Querrichtung. Solche textile Flächengebilde lassen sich gut in Thermoformprozessen umformen. Man erhält naturfaserverstärkte Bauteile.The textile fabric consists of a mixture of 50% hemp fibers and 50% polypropylene fibers, which by Water jets were solidified. The textile fabric has good mechanical properties, so tear resistance of 11000 N / m in the longitudinal direction and 8000 N / m in the transverse direction. Such textile fabrics can be used well in thermoforming processes reshape. You get natural fiber reinforced Components.

Beispiel 7Example 7

Das textile Flächengebilde wurde hergestellt aus Hanffasern ohne Zusatz von Bindemitteln oder anderen Fasern und durch Wasserstrahlen verfestigt. Die Dicke des textilen Flächengebildes beträgt 4 mm, die Flächenmasse 1500 g/m, die Reißfestigkeit in Längsrichtung 18000 N/m und in Querrichtung 15000 N/m.The textile fabric was made from hemp fibers without the addition of binders or other fibers and through Water jets solidified. The thickness of the fabric is 4 mm, the mass per unit area 1500 g / m, the tensile strength in the longitudinal direction 18000 N / m and in the transverse direction 15000 N / m.

Die sehr hohe Nassfestigkeit des textilen Flächengebildes ermöglicht den Einsatz in Spezialfiltern z. B. zur Aufnahme von Schwermetallen bei der Klärschlammfiltration. Weitere Anwendungen sind die als Dämmmaterial und für die Herstellung von strukturierten Platten.The very high wet strength of the textile fabric enables use in special filters e.g. B. for inclusion of heavy metals in sewage sludge filtration. Further Applications are as insulation and for manufacturing of structured panels.

Claims (2)

  1. Textile sheetlike structure, characterized by a core layer and one- or both-sided cover layers, composed of fluid- and preferably hydro-entangled bast fibres, especially hemp fibres, having a high content of scrap materials such as short fibres, fibrous dusts, other fibrous concomitants and already consolidated nonwoven particles in the core layer and sheet weights from 30 to 3000 g/m2.
  2. Textile sheetlike structure according to Claim 1, characterized by breaking strengths from 100 to 25 000 N/m in the machine direction and in the cross direction.
EP01916922A 2000-03-07 2001-03-07 Textile fabric consisting of natural fibres Expired - Lifetime EP1264025B1 (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE20004553U 2000-03-07
DE20004553U DE20004553U1 (en) 2000-03-07 2000-03-07 Bast fiber nonwoven
PCT/DE2001/000943 WO2001066845A1 (en) 2000-03-07 2001-03-07 Textile fabric consisting of natural fibres

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EP1264025A1 EP1264025A1 (en) 2002-12-11
EP1264025B1 true EP1264025B1 (en) 2004-07-07

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EP01916922A Expired - Lifetime EP1264025B1 (en) 2000-03-07 2001-03-07 Textile fabric consisting of natural fibres

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AT (1) ATE270721T1 (en)
DE (2) DE20004553U1 (en)
WO (1) WO2001066845A1 (en)

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2002050355A1 (en) * 2000-12-19 2002-06-27 M & J Fibretech A/S Web consisting of a base web and air-laid fibres hydroentangled on the base web
DE20118508U1 (en) 2001-10-30 2002-02-28 VLIESTEC AG, 10587 Berlin Textile multi-layer sandwich system made of natural fibers with weights greater than 200 g / sqm
GB2452235A (en) * 2007-03-05 2009-03-04 Eco Mats Ltd Plant fibre mat and method of making a plant fibre mat
FR2972462B1 (en) * 2011-03-08 2013-03-08 Geco Ingenierie METHOD AND DEVICE FOR PRODUCING NON-WOVEN GEOTEXTILE AND GEOTEXTILE SO PRODUCED

Family Cites Families (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2662711B2 (en) 1989-12-01 1992-08-14 Kaysersberg Sa NONWOOD MANUFACTURING PROCESS.
FR2655361B1 (en) * 1989-12-01 1992-02-28 Kaysersberg Sa PROCESS FOR THE MANUFACTURE OF HYDROPHILIC NONWOVEN FABRICS COMPRISING NATURAL FIBERS, PARTICULARLY ECRON COTTON, NONWOVEN PRODUCTS OBTAINED.
GB2264512A (en) * 1992-02-28 1993-09-01 Lantor Hydro-entangled non-woven fabric
SE503272C2 (en) * 1994-08-22 1996-04-29 Moelnlycke Ab Nonwoven material prepared by hydroentangling a fiber web and method for making such nonwoven material
RU2147506C1 (en) * 1994-09-26 2000-04-20 Липперт-Унипол ГмбХ Surface machining tool
SE514726C2 (en) * 1995-02-27 2001-04-09 Sca Hygiene Prod Ab Process for the production of hydroentangled nonwoven material with increased wet strength and material prepared by the process
DE19640622C2 (en) * 1996-10-01 1998-11-12 Moeller Plast Gmbh Building material and method and device for producing a building material
FR2781818B1 (en) * 1998-07-31 2000-09-01 Icbt Perfojet Sa PROCESS FOR THE PRODUCTION OF A COMPLEX NON-WOVEN MATERIAL AND NEW TYPE OF MATERIAL THUS OBTAINED
HU225371B1 (en) 1998-10-23 2006-10-28 Dexter Corp Nonwoven for polymer moulding applications
FR2795100B1 (en) * 1999-06-16 2001-09-14 Fort James France HYDROPHILIC COTTON PRODUCT WITH A SOFT FACE AND A SCRATCHING FACE

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EP1264025A1 (en) 2002-12-11
ATE270721T1 (en) 2004-07-15
WO2001066845A1 (en) 2001-09-13
DE50102794D1 (en) 2004-08-12
DE20004553U1 (en) 2000-09-28

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