EP1561848A1 - Method of making a spunbonded filamentary web - Google Patents

Method of making a spunbonded filamentary web Download PDF

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Publication number
EP1561848A1
EP1561848A1 EP05001080A EP05001080A EP1561848A1 EP 1561848 A1 EP1561848 A1 EP 1561848A1 EP 05001080 A EP05001080 A EP 05001080A EP 05001080 A EP05001080 A EP 05001080A EP 1561848 A1 EP1561848 A1 EP 1561848A1
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EP
European Patent Office
Prior art keywords
filaments
nonwoven web
temperature
spun
polymer
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Granted
Application number
EP05001080A
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German (de)
French (fr)
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EP1561848B1 (en
EP1561848B2 (en
Inventor
Sebastian Sommer
Jens Güdden
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Reifenhaeuser GmbH and Co KG Maschinenenfabrik
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Reifenhaeuser GmbH and Co KG Maschinenenfabrik
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    • D—TEXTILES; PAPER
    • D04—BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
    • D04H—MAKING TEXTILE FABRICS, e.g. FROM FIBRES OR FILAMENTARY MATERIAL; FABRICS MADE BY SUCH PROCESSES OR APPARATUS, e.g. FELTS, NON-WOVEN FABRICS; COTTON-WOOL; WADDING ; NON-WOVEN FABRICS FROM STAPLE FIBRES, FILAMENTS OR YARNS, BONDED WITH AT LEAST ONE WEB-LIKE MATERIAL DURING THEIR CONSOLIDATION
    • 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
    • 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
    • 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
    • D04H1/4382—Stretched reticular film fibres; Composite fibres; Mixed fibres; Ultrafine fibres; Fibres for artificial leather
    • 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
    • D04H1/70—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres characterised by the method of forming fleeces or layers, e.g. reorientation of fibres
    • D—TEXTILES; PAPER
    • D04—BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
    • D04H—MAKING TEXTILE FABRICS, e.g. FROM FIBRES OR FILAMENTARY MATERIAL; FABRICS MADE BY SUCH PROCESSES OR APPARATUS, e.g. FELTS, NON-WOVEN FABRICS; COTTON-WOOL; WADDING ; NON-WOVEN FABRICS FROM STAPLE FIBRES, FILAMENTS OR YARNS, BONDED WITH AT LEAST ONE WEB-LIKE MATERIAL DURING THEIR CONSOLIDATION
    • D04H18/00—Needling machines
    • D04H18/04—Needling machines with water jets

Definitions

  • the invention relates to a method for producing a spunbonded from Filaments, in particular of filaments of thermoplastic, wherein the filaments are deposited to the nonwoven web and wherein the nonwoven web hydrodynamically solidified.
  • Filaments means within the scope of the invention Continuous fibers, d. H. theoretically infinitely long threads that make up the nonwoven web or the spunbonded is formed. It is within the scope of the invention that the Nonwoven web or spunbonded continuously from the filaments is formed.
  • a nonwoven web of filaments solidify hydrodynamically or to a hydroentanglement undergo.
  • the filaments of the nonwoven web are often hydrophobic or have a hydrophobic surface. This is especially true for filaments from polyolefins, for example polyethylene or polypropylene. by virtue of of the hydrophobic character leaves the effectiveness of momentum transfer from Wishing water on the filaments during hydroentanglement often left. In that regard, the method known from practice in need of improvement.
  • the invention is the technical problem underlying a Specify method of the type mentioned, with the also in hydrophobic filaments or hydrophobic filament surfaces effective hydrodynamic solidification is possible.
  • the invention teaches a method for producing a spunbonded filament, in particular from filaments of thermoplastic material, wherein the filaments are spun from a mixture of at least one polymer and at least one hydrophilic additive and deposited to the nonwoven web, wherein the nonwoven web is heated to a temperature of at least 30 ° C and / or is moistened with a water-containing liquid and wherein the nonwoven web is subsequently hydrodynamically solidified.
  • thermoplastic polymer or thermoplastic polymers are used as a polymer for the filaments. It is also within the scope of the invention that the filaments mainly consist of this polymer or of these polymers.
  • the mixture from which the Filaments are spun at least 90 wt.%, Preferably at least 95% by weight, from the polymer. Preferably, the Filaments to more than 95 wt.% Of the at least one polymer.
  • the Mixture from which the filaments are spun contains suitably 0.1 to 5 wt.%, Preferably 0.1 to 3 wt.% And very preferably 0.15 to 2.5 wt.% Of the hydrophilic additive.
  • the claim 1 distinguishes between the at least one polymer and the at least a hydrophilic additive.
  • the aforementioned polymer (from which the Filaments consist mainly) is a non-hydrophilic or not sufficiently hydrophilic polymer, but hydrophilic modifiable is.
  • This polymer is very preferably a polyolefin, preferably polyethylene or polypropylene. But this polymer can also be a polyester or for example a polyamide. It is in the frame the invention that the hydrophilic additive also a polymer, namely a hydrophilic polymer.
  • the invention is the mixture from which the filaments are spun, in Concentrating on concentration and / or type of ingredients, adjust so that after a storage period of 3 to 9 days, preferably from 4 to 8 days and most preferably from 5 to 7 days, the surface tension of the filaments would change or change by at least 5 mN / m.
  • the hydrophilic additive is more preferred Embodiment of the invention a hydrophilic polymer. It is in the frame of the invention that the hydrophilic additive is an ethoxylated organic compound or an ethoxylated polymer. After a lot preferred embodiment of the invention is at least one hydrophilic Additive from the group "polyalkylene oxide, polyalkylene oxide compound, ethoxylated silicone, ethoxylated siloxane, ethoxylated hydrocarbon, ethoxylated fluorocarbon 'used. When a polyalkylene oxide may be polyethylene oxide in one embodiment act. It is within the scope of the invention as a hydrophilic additive with Use polyalkylene oxide modified polymers.
  • the filaments for the nonwoven web according to the invention may be Monocomponent filaments and / or bicomponent filaments or Mehrkomponentenfilrait act.
  • the bicomponent filaments or Multi-component filaments can be a side-by-side structure or a Core-shell structure.
  • According to a particular embodiment of Invention are hollow fibers as filaments for the inventive Nonwoven web used.
  • Multi-component filaments preferably bicomponent filaments with a core-shell structure with the hydrophilic additive in the shell component spun. It is within the scope of the invention that the hydrophilic Additive exclusively in the shell component of these bicomponent filaments or Mehrkomponentenfilthough is present.
  • a very preferred embodiment of the method according to the invention is characterized in that at least a part of the filaments as spliceable multi-component filaments, preferably Bicomponent filaments with the hydrophilic additive in at least one Component to be spun and that at least part of the splittable Multi-component filaments during hydrodynamic consolidation spliced.
  • Spliceable multi-component filaments or Bicomponent filaments means in particular filaments, their components consist of incompatible polymer components.
  • At least one Polymer component in these multi-component is from a Mixture of the polymer and a hydrophilic additive spun.
  • spliceable multi-component filaments during hydrodynamic Solidification be spliced means in the invention that these Filaments are spliced over at least part of their length.
  • the used in the invention spliceable multi-component filaments have a side-by-side structure or a segmented pie structure (also as an orange type or orange structure designated). These multi-component filaments can be used as solid fibers or as Hollow fibers are present.
  • hydrophilic additive used which has a different solubility in the having individual components of the multi-component filaments.
  • a hydrophilic additive that by the different Solubility in the individual components of the Mehrkomponentenfil noir itself concentrated in the phase boundaries and thus reduces the limit liability.
  • the inventive method is characterized in that the Nonwoven web is pre-consolidated before its heating and / or moistening.
  • These Pre-consolidation can be thermal or mechanical, for example by Needling be performed. Basically, the pre-consolidation take place hydrodynamically.
  • the filaments formed nonwoven web to a temperature of at least 35 ° C, preferably heated to at least 40 ° C. It is within the scope of the invention that the Nonwoven web up to a temperature of 20 ° C below the melting point of a the filament surface of the filament-forming polymer is heated. If the filament surface forming polymer polyethylene and / or Polypropylene is, the nonwoven web is expediently at a temperature heated up to 100 ° C.
  • the nonwoven web In the hydrous liquid used to wet the nonwoven web, it is preferably pure water or water, the at least one surfactant is added to the wetting to facilitate the (hydrophobic) filaments.
  • the Nonwoven web with a heated liquid containing water with the proviso moistens or sprays that the nonwoven web to a temperature of at least 20 ° C, preferably at least 25 ° C and very preferably at least 30 ° C is heated.
  • the nonwoven web at a temperature of at least 20 ° C, preferably at least 25 ° C, and more preferably at least 30 ° C, moistened with the water-containing liquid.
  • Moistening of the nonwoven web with water-containing liquid which takes place on a temperature of at least 35 ° C, preferably to a temperature of heated or preheated at least 40 ° C.
  • the moistening of the nonwoven web with preheated water he follows. It may be a spraying of the nonwoven web with the liquid and / or a Immersion of the nonwoven web into the liquid and / or vapor deposition the nonwoven web with water vapor. Hydrated liquid means in the frame the invention therefore also vaporous water.
  • the hydrodynamic solidification of Nonwoven web is done by water jet treatment. At this Hydroentanglement or water jet bonding solidify very, very quick water jets the nonwoven fabric.
  • the hydrodynamic solidification takes place immediately after the other method steps according to the invention, ie preferably immediately after heating and / or moistening the nonwoven web. Then the process is therefore driven inline, d. H. the production of Nonwoven web or the spunbonded nonwoven takes place continuously and without interruption.
  • the method can also be done offline, d. H. with a break in the Step sequence. It is within the scope of the invention that offline is worked by the nonwoven web before hydrodynamic consolidation at a temperature of at least 30 ° C and / or under moistening with a water-containing liquid is stored.
  • the nonwoven web can after the Heating and / or moistening are heated or wound up wet and preferably, the wound nonwoven web is then tempered Space stored, for example, several hours or several days.
  • the Storage temperature is expediently at least 30 ° C, preferably at least 40 ° C.
  • the filament surface is made of a polyolefin, especially made of polypropylene or polyethylene, is the Storage temperature preferably 40 ° C to 100 ° C. It lies within the framework of Invention that the nonwoven web is kept moist during storage, for example by storage in a high moisture atmosphere or with high humidity. Basically, the nonwoven web but also only be stored warm, for example, in an electric blanket is wrapped.
  • the invention is based on the finding that in a nonwoven web, the Filaments with a hydrophilic additive, according to the Pre-treatment according to the invention by heating and / or humidification a very effective hydrodynamic consolidation or Hydroentanglement can take place.
  • pretreated nonwoven web becomes a hydrodynamic consolidation surprisingly effective momentum transfer from the water to the filaments reached.
  • the spun filaments 1 are on an endless circulating Ablegesiebband 2 trained filing to the spunbonded web 3 filed.
  • the Spunbonded web 3 is then transported in the direction of the arrow and that first in a treatment station 4, in which a pre-consolidation takes place.
  • the Pre-consolidation can be carried out, for example, thermally.
  • the spunbonded web 3 is fed to the second treatment station 5.
  • This second treatment station 5 is preferably both a Heating as well as a moistening of the spunbonded web 3.
  • the spunbonded web 3 is with on, for example 50 ° C preheated water treated.
  • the Spunbonded web 3 introduced into a solidification device 6, in which the hydrodynamic solidification takes place. Ie. it becomes a web stabilization by water jet treatment or by treatment with High pressure water jets performed.
  • the hydrodynamic solidification process can be surprisingly effective respectively.

Landscapes

  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Nonwoven Fabrics (AREA)
  • Multicomponent Fibers (AREA)
  • Yarns And Mechanical Finishing Of Yarns Or Ropes (AREA)
  • Chemical Or Physical Treatment Of Fibers (AREA)
  • Treatment Of Fiber Materials (AREA)
  • Knitting Of Fabric (AREA)

Abstract

A method for the production of spun-bonded fabric by spinning filaments (especially of thermoplastic polymer), laying down the filaments as fleece, heating to at least 30[deg]C and/or wetting with an aqueous liquid and then hydrodynamically bonding the fabric, in which the filaments are spun from a mixture of polymer(s) and hydrophilic additive(s) (I).

Description

Die Erfindung betrifft ein Verfahren zur Herstellung eines Spinnvlieses aus Filamenten, insbesondere aus Filamenten aus thermoplastischem Kunststoff, wobei die Filamente zur Vliesbahn abgelegt werden und wobei die Vliesbahn hydrodynamisch verfestigt wird. - Filamente meint im Rahmen der Erfindung Endlosfasern, d. h. theoretisch unendlich lange Fäden, aus denen die Vliesbahn bzw. das Spinnvlies gebildet wird. Es liegt im Rahmen der Erfindung, dass die Vliesbahn bzw. das Spinnvlies kontinuierlich aus den Filamenten gebildet wird.The invention relates to a method for producing a spunbonded from Filaments, in particular of filaments of thermoplastic, wherein the filaments are deposited to the nonwoven web and wherein the nonwoven web hydrodynamically solidified. - Filaments means within the scope of the invention Continuous fibers, d. H. theoretically infinitely long threads that make up the nonwoven web or the spunbonded is formed. It is within the scope of the invention that the Nonwoven web or spunbonded continuously from the filaments is formed.

Aus der Praxis ist es grundsätzlich bekannt, eine Vliesbahn aus Filamenten hydrodynamisch zu verfestigen bzw. einer Wasserstrahlverfestigung zu unterziehen. Die Filamente der Vliesbahn sind aber häufig hydrophob bzw. weisen eine hydrophobe Oberfläche auf. Das gilt insbesondere bei Filamenten aus Polyolefinen, beispielsweise aus Polyethylen oder Polypropylen. Aufgrund des hydrophoben Charakters lässt die Effektivität der Impulsübertragung vom Wasser auf die Filamente bei der Wasserstrahlverfestigung oft zu wünschen übrig. Insoweit ist das aus der Praxis bekannte Verfahren verbesserungsbedürftig.From practice, it is basically known, a nonwoven web of filaments solidify hydrodynamically or to a hydroentanglement undergo. The filaments of the nonwoven web are often hydrophobic or have a hydrophobic surface. This is especially true for filaments from polyolefins, for example polyethylene or polypropylene. by virtue of of the hydrophobic character leaves the effectiveness of momentum transfer from Wishing water on the filaments during hydroentanglement often left. In that regard, the method known from practice in need of improvement.

Dementsprechend liegt der Erfindung das technische Problem zugrunde, ein Verfahren der eingangs genannten Art anzugeben, mit dem auch bei hydrophoben Filamenten bzw. bei hydrophoben Filamentoberflächen eine effektive hydrodynamische Verfestigung möglich ist.Accordingly, the invention is the technical problem underlying a Specify method of the type mentioned, with the also in hydrophobic filaments or hydrophobic filament surfaces effective hydrodynamic solidification is possible.

Zur Lösung dieses technischen Problems lehrt die Erfindung ein Verfahren zur Herstellung eines Spinnvlieses aus Filamenten, insbesondere aus Filamenten aus thermoplastischem Kunststoff,
wobei die Filamente aus einer Mischung aus zumindest einem Polymeren und zumindest einem hydrophilen Additiv gesponnen werden und zur Vliesbahn abgelegt werden,
wobei die Vliesbahn auf eine Temperatur von mindestens 30 °C erwärmt wird und/oder mit einer wasserhaltigen Flüssigkeit befeuchtet wird und wobei die Vliesbahn im Anschluss daran hydrodynamisch verfestigt wird.To solve this technical problem, the invention teaches a method for producing a spunbonded filament, in particular from filaments of thermoplastic material,
wherein the filaments are spun from a mixture of at least one polymer and at least one hydrophilic additive and deposited to the nonwoven web,
wherein the nonwoven web is heated to a temperature of at least 30 ° C and / or is moistened with a water-containing liquid and wherein the nonwoven web is subsequently hydrodynamically solidified.

Es liegt im Rahmen der Erfindung, dass als Polymer für die Filamente ein thermoplastisches Polymer bzw. thermoplastische Polymere eingesetzt werden. Es liegt fernerhin im Rahmen der Erfindung, dass die Filamente hauptsächlich aus diesem Polymeren bzw. aus diesen Polymeren bestehen. Nach sehr bevorzugter Ausführungsform der Erfindung besteht die Mischung, aus der die Filamente gesponnen werden, zumindest zu 90 Gew.%, vorzugsweise zumindest zu 95 Gew.%, aus dem Polymeren. Vorzugsweise bestehen die Filamente zu mehr als 95 Gew.% aus dem zumindest einen Polymeren. Die Mischung, aus der die Filamente gesponnen werden, enthält zweckmäßigerweise 0,1 bis 5 Gew.%, bevorzugt 0,1 bis 3 Gew.% und sehr bevorzugt 0,15 bis 2,5 Gew.% des hydrophilen Additivs. Der Patentanspruch 1 unterscheidet zwischen dem zumindest einen Polymeren und dem zumindest einen hydrophilen Additiv. Bei dem vorgenannten Polymer (aus dem die Filamente hauptsächlich bestehen) handelt es sich um ein nicht hydrophiles bzw. nicht ausreichend hydrophiles Polymer, das aber hydrophil modifizierbar ist. Bei diesem Polymer handelt es sich sehr bevorzugt um ein Polyolefin, vorzugsweise um Polyethylen oder Polypropylen. Dieses Polymer kann aber auch ein Polyester oder beispielsweise ein Polyamid sein. Es liegt im Rahmen der Erfindung, dass das hydrophile Additiv ebenfalls ein Polymer, nämlich ein hydrophiles Polymer ist. - Nach einer besonders bevorzugten Ausführungsform der Erfindung ist die Mischung, aus denen die Filamente gesponnen werden, in Bezug auf Konzentration und/oder Art der Bestandteile, so einzustellen, dass sich nach einer Lagerzeit von 3 bis 9 Tagen, vorzugsweise von 4 bis 8 Tagen und sehr bevorzugt von 5 bis 7 Tagen die Oberflächenspannung der Filamente um mindestens 5 mN/m ändert bzw. ändern würde.It is within the scope of the invention that as a polymer for the filaments thermoplastic polymer or thermoplastic polymers are used. It is also within the scope of the invention that the filaments mainly consist of this polymer or of these polymers. After a lot a preferred embodiment of the invention, there is the mixture from which the Filaments are spun, at least 90 wt.%, Preferably at least 95% by weight, from the polymer. Preferably, the Filaments to more than 95 wt.% Of the at least one polymer. The Mixture from which the filaments are spun contains suitably 0.1 to 5 wt.%, Preferably 0.1 to 3 wt.% And very preferably 0.15 to 2.5 wt.% Of the hydrophilic additive. The claim 1 distinguishes between the at least one polymer and the at least a hydrophilic additive. In the aforementioned polymer (from which the Filaments consist mainly) is a non-hydrophilic or not sufficiently hydrophilic polymer, but hydrophilic modifiable is. This polymer is very preferably a polyolefin, preferably polyethylene or polypropylene. But this polymer can also be a polyester or for example a polyamide. It is in the frame the invention that the hydrophilic additive also a polymer, namely a hydrophilic polymer. - According to a particularly preferred embodiment the invention is the mixture from which the filaments are spun, in Concentrating on concentration and / or type of ingredients, adjust so that after a storage period of 3 to 9 days, preferably from 4 to 8 days and most preferably from 5 to 7 days, the surface tension of the filaments would change or change by at least 5 mN / m.

Wie oben bereits angesprochen ist das hydrophile Additiv nach bevorzugter Ausführungsform der Erfindung ein hydrophiles Polymer. Es liegt im Rahmen der Erfindung, dass es sich bei dem hydrophilen Additiv um eine ethoxylierte organische Verbindung bzw. um ein ethoxyliertes Polymer handelt. Nach sehr bevorzugter Ausführungsform der Erfindung wird zumindest ein hydrophiles Additiv aus der Gruppe "Polyalkylenoxid, Polyalkylenoxid-Verbindung, ethoxyliertes Silikon, ethoxyliertes Siloxan, ethoxylierter Kohlenwasserstoff, ethoxylierter Fluorkohlenwasserstoff' eingesetzt. Wenn ein Polyalkylenoxid verwendet wird, kann es sich nach einer Ausführungsform um Polyethylenoxid handeln. Es liegt im Rahmen der Erfindung als hydrophiles Additiv mit Polyalkylenoxid modifizierte Polymere einzusetzen.As already mentioned above, the hydrophilic additive is more preferred Embodiment of the invention a hydrophilic polymer. It is in the frame of the invention that the hydrophilic additive is an ethoxylated organic compound or an ethoxylated polymer. After a lot preferred embodiment of the invention is at least one hydrophilic Additive from the group "polyalkylene oxide, polyalkylene oxide compound, ethoxylated silicone, ethoxylated siloxane, ethoxylated hydrocarbon, ethoxylated fluorocarbon 'used. When a polyalkylene oxide may be polyethylene oxide in one embodiment act. It is within the scope of the invention as a hydrophilic additive with Use polyalkylene oxide modified polymers.

Bei den Filamenten für die erfindungsgemäße Vliesbahn kann es sich um Monokomponentenfilamente und/oder Bikomponentenfilamente bzw. Mehrkomponentenfilamente handeln. Die Bikomponentenfilamente bzw. Mehrkomponentenfilamente können eine Seite-an-Seite-Struktur oder eine Kern-Mantel-Struktur aufweisen. Nach eine besonderen Ausführungsform der Erfindung werden Hohlfasern als Filamente für die erfindungsgemäße Vliesbahn eingesetzt.The filaments for the nonwoven web according to the invention may be Monocomponent filaments and / or bicomponent filaments or Mehrkomponentenfilamente act. The bicomponent filaments or Multi-component filaments can be a side-by-side structure or a Core-shell structure. According to a particular embodiment of Invention are hollow fibers as filaments for the inventive Nonwoven web used.

Nach ganz besonders bevorzugter Ausführungsform der Erfindung werden Mehrkomponentenfilamente, vorzugsweise Bikomponenten-Filamente mit Kern-Mantel-Struktur mit dem hydrophilen Additiv in der Mantelkomponente gesponnen. Dabei liegt es im Rahmen der Erfindung, dass das hydrophile Additiv ausschließlich in der Mantelkomponente dieser Bikomponentenfilamente bzw. Mehrkomponentenfilamente vorhanden ist. In a particularly preferred embodiment of the invention Multi-component filaments, preferably bicomponent filaments with a core-shell structure with the hydrophilic additive in the shell component spun. It is within the scope of the invention that the hydrophilic Additive exclusively in the shell component of these bicomponent filaments or Mehrkomponentenfilamente is present.

Eine sehr bevorzugte Ausführungsform des erfindungsgemäßen Verfahrens ist dadurch gekennzeichnet, dass zumindest ein Teil der Filamente als spleißfähige Mehrkomponentenfilamente, vorzugsweise Bikomponentenfilamente mit dem hydrophilen Additiv in zumindest einer Komponente gesponnen werden und dass zumindest ein Teil der spleißfähigen Mehrkomponentenfilamente während der hydrodynamischen Verfestigung gespleißt wird. Spleißfähige Mehrkomponentenfilamente bzw. Bikomponentenfilamente meint insbesondere Filamente, deren Komponenten aus inkompatiblen Polymerkomponenten bestehen. Mindestens eine Polymerkomponente in diesen Mehrkomponentenfilmenten wird aus einer Mischung aus dem Polymer und einem hydrophilen Additiv ersponnen. Dass die spleißfähigen Mehrkomponentenfilamente während der hydrodynamischen Verfestigung gespleißt werden, meint im Rahmen der Erfindung, dass diese Filamente über zumindest einen Teil ihrer Länge gespleißt werden. Der vorstehend erläuterten Ausführungsform kommt ganz besondere Bedeutung zu. Überraschenderweise kann aufgrund einer besseren Benetzung der Mehrkomponentenfilamente während der hydrodynamischen Verfestigung das Spleißen mit im Vergleich zu aus dem Stand der Technik bekannten Maßnahmen niedrigerem Energieaufwand durchgeführt werden. Das ist natürlich ein beachtlicher Vorteil. - Die im Rahmen der Erfindung eingesetzten spleißfähigen Mehrkomponentenfilamente haben eine Seite-an-Seite-Struktur oder eine segmented-pie-Struktur (auch als Orangentyp bzw. Orangenstruktur bezeichnet). Diese Mehrkomponentenfilamente können als Vollfasern oder als Hohlfasern vorliegen.A very preferred embodiment of the method according to the invention is characterized in that at least a part of the filaments as spliceable multi-component filaments, preferably Bicomponent filaments with the hydrophilic additive in at least one Component to be spun and that at least part of the splittable Multi-component filaments during hydrodynamic consolidation spliced. Spliceable multi-component filaments or Bicomponent filaments means in particular filaments, their components consist of incompatible polymer components. At least one Polymer component in these multi-component is from a Mixture of the polymer and a hydrophilic additive spun. That the spliceable multi-component filaments during hydrodynamic Solidification be spliced, means in the invention that these Filaments are spliced over at least part of their length. Of the embodiment explained above is of particular importance. Surprisingly, due to better wetting of the Multi-component filaments during hydrodynamic consolidation of the Splicing with compared to known from the prior art Measures of lower energy consumption are carried out. This is Of course, a considerable advantage. - The used in the invention spliceable multi-component filaments have a side-by-side structure or a segmented pie structure (also as an orange type or orange structure designated). These multi-component filaments can be used as solid fibers or as Hollow fibers are present.

Sehr bevorzugt wird im Rahmen des erfindungsgemäßen Verfahrens ein hydrophiles Additiv eingesetzt, das eine unterschiedliche Löslichkeit in den einzelnen Komponenten der Mehrkomponentenfilamente aufweist. Besonders bevorzugt ist dabei ein hydrophiles Additiv, das durch die unterschiedliche Löslichkeit in den einzelnen Komponenten der Mehrkomponentenfilamente sich in den Phasengrenzen aufkonzentriert und damit die Grenzhaftung herabsetzt. Dadurch wird bei der hydrodynamischen Verfestigung von spleißfähigen Mehrkomponentenfilamenten ein besonders effektives Spleißen erzielt.Very preferred is in the context of the inventive method hydrophilic additive used which has a different solubility in the having individual components of the multi-component filaments. Especially preferred is a hydrophilic additive that by the different Solubility in the individual components of the Mehrkomponentenfilamente itself concentrated in the phase boundaries and thus reduces the limit liability. As a result, the hydrodynamic consolidation of spliceable Multi-component filaments achieved a particularly effective splicing.

Ganz besondere Bedeutung kommt einer Ausführungsform des erfindungsgemäßen Verfahrens zu, die dadurch gekennzeichnet ist, dass die Vliesbahn vor ihrer Erwärmung und/oder Befeuchtung vorverfestigt wird. Diese Vorverfestigung kann thermisch oder mechanisch, beispielsweise durch Vernadeln durchgeführt werden. Grundsätzlich kann auch die Vorverfestigung hydrodynamisch erfolgen.Of particular importance is an embodiment of the inventive method, which is characterized in that the Nonwoven web is pre-consolidated before its heating and / or moistening. These Pre-consolidation can be thermal or mechanical, for example by Needling be performed. Basically, the pre-consolidation take place hydrodynamically.

Nach bevorzugter Ausführungsform der Erfindung wird die aus den Filamenten gebildete Vliesbahn auf eine Temperatur von mindestens 35 °C, vorzugsweise von mindestens 40 °C erhitzt. Es liegt dabei im Rahmen der Erfindung, dass die Vliesbahn bis zu einer Temperatur von 20 °C unter dem Schmelzpunkt eines die Filamentoberfläche der Filamente bildenden Polymers erwärmt wird. Wenn das die Filamentoberfläche bildende Polymer Polyethylen und/oder Polypropylen ist, wird die Vliesbahn zweckmäßigerweise auf eine Temperatur bis zu 100 °C erwärmt.According to a preferred embodiment of the invention, the filaments formed nonwoven web to a temperature of at least 35 ° C, preferably heated to at least 40 ° C. It is within the scope of the invention that the Nonwoven web up to a temperature of 20 ° C below the melting point of a the filament surface of the filament-forming polymer is heated. If the filament surface forming polymer polyethylene and / or Polypropylene is, the nonwoven web is expediently at a temperature heated up to 100 ° C.

Bei der wasserhaltigen Flüssigkeit, mit der die Vliesbahn befeuchtet wird, handelt es sich vorzugsweise um reines Wasser oder um Wasser, dem zumindest eine oberflächenaktive Substanz zugemischt ist, um die Benetzung der (hydrophoben) Filamente zu erleichtern. Zweckmäßigerweise wird die Vliesbahn mit einer erwärmten wasserhaltigen Flüssigkeit mit der Maßgabe befeuchtet bzw. besprüht, dass die Vliesbahn auf eine Temperatur von mindestens 20 °C, vorzugsweise mindestens 25 °C und sehr bevorzugt mindestens 30 °C erwärmt wird. Nach einer bevorzugten Ausführungsform der Erfindung wird die Vliesbahn bei einer Temperatur von mindestens 20 °C, vorzugsweise von mindestens 25 °C und sehr bevorzugt von mindestens 30 °C, mit der wasserhaltigen Flüssigkeit befeuchtet. Zweckmäßigerweise erfolgt die Befeuchtung der Vliesbahn bei einer Temperatur von 35 °C und bevorzugt bei einer Temperatur von mindestens 40 °C. Es liegt im Rahmen der Erfindung, dass die Vliesbahn bei solch einer erhöhten Temperatur bis zur oder bis kurz vor der hydrodynamischen Verfestigung feucht gehalten wird. Nach einer sehr bevorzugten Ausführungsform der Erfindung wird die Vliesbahn mit der auf eine Temperatur von mindestens 20 °C, vorzugsweise auf eine Temperatur von mindestens 25 °C und sehr bevorzugt auf eine Temperatur von mindestens 30 °C erwärmten wasserhaltigen Flüssigkeit befeuchtet. Zweckmäßigerweise erfolgt die Befeuchtung der Vliesbahn mit wasserhaltiger Flüssigkeit, die auf eine Temperatur von mindestens 35 °C, bevorzugt auf eine Temperatur von mindestens 40 °C erwärmt bzw. vorgewärmt ist. Es liegt im Rahmen der Erfindung, dass die Befeuchtung der Vliesbahn mit vorgewärmtem Wasser erfolgt. Es kann ein Besprühen der Vliesbahn mit der Flüssigkeit und/oder ein Eintauchen der Vliesbahn in die Flüssigkeit erfolgen und/oder eine Bedampfung der Vliesbahn mit Wasserdampf. Wasserhaltige Flüssigkeit meint im Rahmen der Erfindung also auch dampfförmiges Wasser.In the hydrous liquid used to wet the nonwoven web, it is preferably pure water or water, the at least one surfactant is added to the wetting to facilitate the (hydrophobic) filaments. Appropriately, the Nonwoven web with a heated liquid containing water with the proviso moistens or sprays that the nonwoven web to a temperature of at least 20 ° C, preferably at least 25 ° C and very preferably at least 30 ° C is heated. According to a preferred embodiment of Invention, the nonwoven web at a temperature of at least 20 ° C, preferably at least 25 ° C, and more preferably at least 30 ° C, moistened with the water-containing liquid. Appropriately, the Moistening of the nonwoven web at a temperature of 35 ° C and preferably at a temperature of at least 40 ° C. It is within the scope of the invention that the nonwoven web at such an elevated temperature until or until short is kept moist before hydrodynamic consolidation. After a very preferred embodiment of the invention, the nonwoven web with the on a Temperature of at least 20 ° C, preferably to a temperature of at least 25 ° C and most preferably to a temperature of at least 30 ° C heated water-containing liquid moistened. Conveniently, Moistening of the nonwoven web with water-containing liquid, which takes place on a temperature of at least 35 ° C, preferably to a temperature of heated or preheated at least 40 ° C. It lies within the framework of Invention that the moistening of the nonwoven web with preheated water he follows. It may be a spraying of the nonwoven web with the liquid and / or a Immersion of the nonwoven web into the liquid and / or vapor deposition the nonwoven web with water vapor. Hydrated liquid means in the frame the invention therefore also vaporous water.

Es liegt im Rahmen der Erfindung, dass die hydrodynamische Verfestigung der Vliesbahn durch Wasserstrahlbehandlung erfolgt. Bei dieser Wasserstrahlverfestigung bzw. Wasserstrahlvernadelung verfestigen feine, sehr schnelle Wasserstrahlen den Vliesstoff. Nach einer Ausführungsform der Erfindung erfolgt die hydrodynamische Verfestigung unmittelbar nach den anderen erfindungsgemäßen Verfahrensschritten, also vorzugsweise unmittelbar nach der Erwärmung und/oder Befeuchtung der Vliesbahn. Dann wird das Verfahren also gleichsam inline gefahren, d. h. die Herstellung der Vliesbahn bzw. des Spinnvlieses erfolgt kontinuierlich und ohne Unterbrechung. It is within the scope of the invention that the hydrodynamic solidification of Nonwoven web is done by water jet treatment. At this Hydroentanglement or water jet bonding solidify very, very quick water jets the nonwoven fabric. According to one embodiment of the Invention, the hydrodynamic solidification takes place immediately after the other method steps according to the invention, ie preferably immediately after heating and / or moistening the nonwoven web. Then the process is therefore driven inline, d. H. the production of Nonwoven web or the spunbonded nonwoven takes place continuously and without interruption.

Nach einer anderen Ausführungsform der Erfindung kann das Verfahren aber auch offline durchgeführt werden, d. h. mit einer Unterbrechung der Verfahrensschrittfolge. Dabei liegt es im Rahmen der Erfindung, dass offline gearbeitet wird, indem die Vliesbahn vor der hydrodynamischen Verfestigung bei einer Temperatur von mindestens 30 °C und/oder unter Befeuchtung mit einer wasserhaltigen Flüssigkeit gelagert wird. Die Vliesbahn kann nach der Erwärmung und/oder Befeuchtung erwärmt bzw. feucht aufgewickelt werden und vorzugsweise wird die aufgewickelte Vliesbahn dann in einem temperierten Raum gelagert, beispielsweise mehrere Stunden oder mehrere Tage. Die Lagertemperatur beträgt dabei zweckmäßigerweise mindestens 30 °C, bevorzugt zumindest 40 °C. Wenn die Filamentoberfläche aus einem Polyolefin, insbesondere aus Polypropylen oder Polyethylen besteht, beträgt die Lagerungstemperatur vorzugsweise 40 °C bis 100 °C. Es liegt im Rahmen der Erfindung, dass die Vliesbahn während der Lagerung feucht gehalten wird, beispielsweise durch Lagerung in einer Atmosphäre mit hohem Feuchtegehalt bzw. mit hoher Luftfeuchtigkeit. Grundsätzlich kann die Vliesbahn aber auch lediglich warm gelagert werden, indem sie beispielsweise in eine Heizdecke eingewickelt wird.According to another embodiment of the invention, however, the method can also be done offline, d. H. with a break in the Step sequence. It is within the scope of the invention that offline is worked by the nonwoven web before hydrodynamic consolidation at a temperature of at least 30 ° C and / or under moistening with a water-containing liquid is stored. The nonwoven web can after the Heating and / or moistening are heated or wound up wet and preferably, the wound nonwoven web is then tempered Space stored, for example, several hours or several days. The Storage temperature is expediently at least 30 ° C, preferably at least 40 ° C. If the filament surface is made of a polyolefin, especially made of polypropylene or polyethylene, is the Storage temperature preferably 40 ° C to 100 ° C. It lies within the framework of Invention that the nonwoven web is kept moist during storage, for example by storage in a high moisture atmosphere or with high humidity. Basically, the nonwoven web but also only be stored warm, for example, in an electric blanket is wrapped.

Der Erfindung liegt die Erkenntnis zugrunde, dass bei einer Vliesbahn, die aus Filamenten mit einem hydrophilen Additiv besteht, nach der erfindungsgemäßen Vorbehandlung durch Erwärmung und/oder Befeuchtung eine sehr effektive hydrodynamische Verfestigung bzw. Wasserstrahlverfestigung erfolgen kann. Bei einer solchen erfindungsgemäß vorbehandelten Vliesbahn wird bei der hydrodynamischen Verfestigung eine überraschend wirksame Impulsübertragung von dem Wasser auf die Filamente erreicht. The invention is based on the finding that in a nonwoven web, the Filaments with a hydrophilic additive, according to the Pre-treatment according to the invention by heating and / or humidification a very effective hydrodynamic consolidation or Hydroentanglement can take place. In such an invention pretreated nonwoven web becomes a hydrodynamic consolidation surprisingly effective momentum transfer from the water to the filaments reached.

Nachfolgend wird die Erfindung anhand einer lediglich ein Ausführungsbeispiel darstellenden Zeichnung näher erläutert. Die einzige Figur zeigt die erfindungsgemäße Verfahrensschrittfolge schematisch.The invention will be described below with reference to an exemplary embodiment illustrative drawing explained in more detail. The only figure shows the inventive step sequence schematically.

Die gesponnenen Filamente 1 werden auf einer als endlos umlaufendes Ablegesiebband 2 ausgebildeten Ablage zur Spinnvliesbahn 3 abgelegt. Die Spinnvliesbahn 3 wird dann in Richtung des Pfeiles befördert und zwar zunächst in eine Behandlungsstation 4, in der eine Vorverfestigung erfolgt. Die Vorverfestigung kann beispielsweise thermisch durchgeführt werden. Daraufhin wird die Spinnvliesbahn 3 der zweiten Behandlungsstation 5 zugeführt. In dieser zweiten Behandlungsstation 5 erfolgt vorzugsweise sowohl eine Erwärmung als auch eine Befeuchtung der Spinnvliesbahn 3. Zweckmäßigerweise wird die Spinnvliesbahn 3 dabei mit auf beispielsweise 50 °C vorgewärmtem Wasser behandelt. Im Anschluss daran wird die Spinnvliesbahn 3 in eine Verfestigungsvorrichtung 6 eingeführt, in der die hydrodynamische Verfestigung erfolgt. D. h. es wird eine Vliesverfestigung durch Wasserstrahlbehandlung bzw. durch Behandlung mit Hochdruckwasserstrahlen durchgeführt. Im Rahmen des erfindungsgemäßen Verfahrens kann die hydrodynamische Verfestigung überraschend effektiv erfolgen.The spun filaments 1 are on an endless circulating Ablegesiebband 2 trained filing to the spunbonded web 3 filed. The Spunbonded web 3 is then transported in the direction of the arrow and that first in a treatment station 4, in which a pre-consolidation takes place. The Pre-consolidation can be carried out, for example, thermally. thereupon the spunbonded web 3 is fed to the second treatment station 5. In This second treatment station 5 is preferably both a Heating as well as a moistening of the spunbonded web 3. Conveniently, the spunbonded web 3 is with on, for example 50 ° C preheated water treated. Following this, the Spunbonded web 3 introduced into a solidification device 6, in which the hydrodynamic solidification takes place. Ie. it becomes a web stabilization by water jet treatment or by treatment with High pressure water jets performed. In the context of the invention The hydrodynamic solidification process can be surprisingly effective respectively.

Claims (10)

Verfahren zur Herstellung eines Spinnvlies aus Filamenten (1), insbesondere aus Filamenten (1) aus thermoplastischem Kunststoff, wobei die Filamente (1) aus einer Mischung aus zumindest einem Polymeren und zumindest einem hydrophilen Additiv gesponnen werden und zur Vliesbahn (3) abgelegt werden, wobei die Vliesbahn (3) auf eine Temperatur von mindestens 30 °C erwärmt wird und/oder mit einer wasserhaltigen Flüssigkeit befeuchtet wird und wobei die Vliesbahn im Anschluss daran hydrodynamisch verfestigt wird.Process for producing a spunbonded filament (1), in particular of filaments (1) of thermoplastic, the filaments (1) from a mixture of at least one polymer and at least one hydrophilic additive are spun and deposited to the nonwoven web (3), wherein the nonwoven web (3) is heated to a temperature of at least 30 ° C is and / or moistened with a water-containing liquid and wherein the nonwoven web is subsequently hydrodynamically consolidated. Verfahren nach Anspruch 1, wobei die Mischung, aus der die Filamente (1) gesponnen werden, zumindest zu 90 Gew. %, vorzugsweise zumindest zu 95 Gew. % aus dem Polymeren besteht.Process according to claim 1, wherein the mixture from which the filaments (1) spun, at least 90% by weight, preferably at least to 95 wt.% Consists of the polymer. Verfahren nach einem der Ansprüche 1 oder 2, wobei zumindest ein hydrophiles Additiv aus der Gruppe "Polyalkylenoxid, Polyalkylenoxid-Verbindung, ethoxyliertes Silikon, ethoxyliertes Siloxan, ethoxylierter Kohlenwasserstoff, ethoxylierter Fluorkohlenwasserstoff' eingesetzt wird.Method according to one of claims 1 or 2, wherein at least one hydrophilic additive from the group "polyalkylene oxide, polyalkylene oxide compound, ethoxylated silicone, ethoxylated siloxane, ethoxylated Hydrocarbon, ethoxylated fluorohydrocarbon 'is used. Verfahren nach einem der Ansprüche 1 bis 3, wobei zumindest ein Teil der Filamente als Mehrkomponentenfilamente, vorzugsweise Bikomponentenfilamente mit Kern-Mantel-Struktur mit dem hydrophilen Additiv in der Mantelkomponente gesponnen werden.Method according to one of claims 1 to 3, wherein at least a part of the Filaments as multi-component filaments, preferably bicomponent filaments with core-shell structure with the hydrophilic additive in the Sheath component to be spun. Verfahren nach einem der Ansprüche 1 bis 3, wobei zumindest ein Teil der Filamente als spleißfähige Mehrkomponentenfilamente, vorzugsweise Bikomponentenfilamente, mit dem hydrophilen Additiv in zumindest einer Komponente gesponnen wird und wobei zumindest ein Teil dieser spleißfähigen Mehrkomponentenfilamente während der hydrodynamischen Verfestigung gespleißt wird. Method according to one of claims 1 to 3, wherein at least a part of the Filaments as spliceable multi-component filaments, preferably Bicomponent filaments, with the hydrophilic additive in at least one Component is spun and wherein at least a portion of these spliceable Multi-component filaments during hydrodynamic consolidation spliced. Verfahren nach einem der Ansprüche 1 bis 5, wobei die Vliesbahn (3) vor ihrer Erwärmung und/oder Befeuchtung vorverfestigt wird.Method according to one of claims 1 to 5, wherein the nonwoven web (3) before is pre-consolidated their heating and / or humidification. Verfahren nach einem der Ansprüche 1 bis 6, wobei die Vliesbahn (3) auf eine Temperatur von mindestens 35 °C, vorzugsweise von mindestens 40 °C und bis zu einer Temperatur von 20 °C unter dem Schmelzpunkt eines die Filamentoberfläche bildenden Polymers erwärmt wird.Method according to one of claims 1 to 6, wherein the nonwoven web (3) a temperature of at least 35 ° C, preferably at least 40 ° C and up to a temperature of 20 ° C below the melting point of a Filament surface forming polymer is heated. Verfahren nach einem der Ansprüche 1 bis 7, wobei die Vliesbahn (3) bei einer Temperatur von mindestens 20 °C, vorzugsweise von mindestens 25 °C und sehr bevorzugt von mindestens 30 °C, mit der wasserhaltigen Flüssigkeit befeuchtet wird.Method according to one of claims 1 to 7, wherein the nonwoven web (3) at a temperature of at least 20 ° C, preferably at least 25 ° C. and most preferably at least 30 ° C, with the water-containing liquid is moistened. Verfahren nach einem der Ansprüche 1 bis 8, wobei die Vliesbahn (3) mit einer erwärmten Flüssigkeit mit der Maßgabe befeuchtet bzw. besprüht wird, dass die Vliesbahn auf eine Temperatur von mindestens 20 °C, vorzugsweise mindestens 25 °C, sehr bevorzugt mindestens 30 °C erwärmt wird.Method according to one of claims 1 to 8, wherein the nonwoven web (3) with a heated liquid is moistened or sprayed with the proviso, that the nonwoven web to a temperature of at least 20 ° C, preferably at least 25 ° C, very preferably at least 30 ° C is heated. Verfahren nach einem der Ansprüche 1 bis 9, wobei offline gearbeitet wird, in dem die Vliesbahn (3) vor der hydrodynamischen Verfestigung bei einer Temperatur von mindestens 30 °C und/oder mit der wasserhaltigen Flüssigkeit befeuchtet, gelagert wird.Method according to one of claims 1 to 9, wherein working offline, in which the nonwoven web (3) before hydrodynamic consolidation in a Temperature of at least 30 ° C and / or with the aqueous liquid moistened, stored.
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EP2128320A1 (en) 2008-05-29 2009-12-02 Reifenhäuser GmbH & Co. KG Maschinenfabrik Method and device for the manufacture of nonwoven material from filaments
WO2009144004A1 (en) * 2008-05-29 2009-12-03 Reifenhäuser GmbH & Co. KG Maschinenfabrik Process and apparatus for producing spunbonded webs from filaments
CN102277690A (en) * 2011-06-02 2011-12-14 湖南中核无纺有限公司 Hydrophilic base fabric and making method thereof

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BRPI0500378B1 (en) 2017-12-19
DE102004006373A1 (en) 2005-09-15
DE102004006373B4 (en) 2014-12-31
ES2371649T3 (en) 2012-01-05
KR20060041645A (en) 2006-05-12
US20050173842A1 (en) 2005-08-11
ES2371649T5 (en) 2016-02-15
JP2005220509A (en) 2005-08-18
US7914719B2 (en) 2011-03-29
BRPI0500378A (en) 2005-10-04
CN1654732A (en) 2005-08-17
KR100711998B1 (en) 2007-05-02
EP1561848B1 (en) 2011-09-21
EP1561848B2 (en) 2015-11-25
JP4193994B2 (en) 2008-12-10
CN1654732B (en) 2010-04-28

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