EP1619283A1 - Multicomponent spunbond nonwoven fabric, process for making the same and the use thereof - Google Patents

Abstract

The multi-component spun-bonded nonwoven is composed of at least two polymers forming limit surfaces towards each other as filaments spun from a spinneret with unified jet openings. The filaments pass through a hydrodynamic drawing stage, to be laid flat and bonded. The nonwoven is of different filaments with at least two polymers or it is a mixture of multi-component and single-component filaments. The multi-component filaments are of at least two filaments of a variable thickness according to the number of filaments used in the multi-component filament structure.

Description

Technical area

The invention relates to multicomponent spunbonded nonwovens, comprising at least two polymers forming interfaces with one another, which originate from at least one spinning device with uniform spinneret openings and which are hydrodynamically stretched, laid down in a planar manner and solidified. The invention further relates to a method for producing such a multi-component spunbonded fabric and the use of the products obtained thereafter.

Textile physical properties of surface webs are controlled by the chemical and textile-physical properties of the fibers or filaments forming them. The fiber or filament raw materials are selected according to the desired chemical or physical properties, for example with regard to their colorability, chemical resistance, their thermoformability or their adsorption capacity. The modulus and force-strain properties of the fibers or filaments depend on the material properties, which are determined by the choice of crystallization and / or degree of orientation and the cross-sectional geometry can be controlled to influence the bending stiffness, the force absorption or the specific surfaces of the individual fibers or filaments. The sum of the textile-physical properties of the fibers or filaments forming a textile fabric is ultimately controlled by the weight per unit area. Examples of conflicting requirements for textile fabrics are so-called geotextiles of high-strength, high-elongation, large-titre and three-dimensionally woven filaments, chewing tobacco pouches of cellulosic wet nonwoven fabric or nylon stockings of fine, textured polyamide fabric.

State of the art

From the document EP 0 814 188 B1 nonwovens of very fine continuous filaments are known, which are produced from bicomponent continuous filaments in which the two components are arranged in the cross-section considered Ausgangsfilament orange-column-like and alternating and after deposition into a sheet by liquid pressure jets in Microfiber filaments are split and solidified simultaneously by entanglement of the filament strands. The obtained multicomponent spunbonded nonwoven fabric is determined by the textile-physical properties of its two types of elemental filaments, the titer of the two elementary filament species being only slightly different.

Another way to unite truly contradictory properties with each other in one sheet is to make composites of two or more sheets. The respective properties are combined by the connection of the individual fabrics by known joining methods, such as sewing, gluing, laminating. For this purpose, the individual sheets must be made separately and then with each other get connected. Thus, US Pat. No. 5,679,042 A describes a process for producing a nonwoven fabric having a pore size gradient fiber structure by making fibers from at least one polymer resin and forming a nonwoven fabric having an average pore size, followed by selective treatment with a heat source which results in shrinkage of the fibers and a reduction in average pore size.

Presentation of the invention

The object of the invention has been found to provide a multi-component spunbonded fabric, which combines different textile physical properties in itself. The invention has also set itself the task of providing a method for producing such a multi-component spunbonded fabric and a use of the multi-component spunbonded fabrics obtained thereafter.

According to the invention, the object is achieved by a multicomponent spunbonded nonwoven fabric which consists of at least two polymers forming interfacial surfaces, which are obtained from at least one spinning device with uniform nozzle openings and which are hydrodynamically stretched, laid down and solidified in a planar manner, wherein the multicomponent spunbonded nonwoven consists of different filaments, which contain at least two polymers or consist of a mixture of monocomponent filament multicomponent filaments each containing only one of the polymers, the multicomponent filament consisting of at least two elementary filaments and the denier of the individual filaments by the number of filaments the elementary filaments contained in the filaments varies. The multi-component spunbonded fabric according to the invention therefore has has the advantage that it combines different filaments in themselves, which differ in terms of the polymer of which they differ and in terms of their filament titer, wherein they originate from a uniform spinning process. Thus, over the prior art, the advantage that the separate production of spunbonded fabrics with different filament titer does not have to be done separately and no subsequent combination is necessary to arrive at a multi-component spunbonded nonwoven, consisting of different filaments with different filament Titers.

According to the invention, the multicomponent filaments present in the multicomponent spunbonded fabric of the present invention may consist of from 1 to 64 elementary filaments. The titer of the elementary filaments can thereby be in the range of 0.05 to 4.8 dtex. The large width of the filament titer leads to products having very small pore sizes being obtained on the one hand by the fine-denier fraction and, on the other hand, to the textile-physical properties of the multicomponent spunbonded nonwoven being determined by the content of filaments having a high titer.

Advantageously, the monocomponent and multicomponent filaments of the multicomponent spunbonded web had a similar initial titer in the range of 1.5 to 5 dtex. The inventive use of uniform spinning plates for the production of monocomponent and multicomponent filaments with similar starting titres in the range of 1.5 to 5 dtex, is an inexpensive and effective in terms of spinning conditions measure.

In the multicomponent spunbonded nonwoven according to the invention, the polymers used are preferably in the same weight ratio in the multicomponent filaments and in the mixture of monocomponent filaments available. The use according to the invention of the same weight ratio of the polymers in the different filaments enables the effective use of a supply system for the individual spinning stations, ie in the simplest case, only one extruder for the parallel production of the different monocomponent filaments and the multi-component filaments the polymers used necessary. By using further extruders, correspondingly more polymer components can be used.

Advantageously, the multi-component spunbonded nonwoven according to the invention by the stratification of Monokomponenten- and the resulting from the multi-component filaments after their splitting elemental filaments or at least two layers of multi-component filaments with different elementary filament number and consequent different titers Elemental filaments a titer gradient perpendicular to its major surfaces, ie in the Z direction, up. In this case, for example, the distribution of the filaments with different titers may be such that the multicomponent nonwoven fabric according to the invention has in its center the filaments with the greatest titre in terms of thickness and the filaments are arranged stepwise with decreasing titre to the outside or the distribution of the filament titer is such that the filament titer increases or decreases from one main side toward the other main side.

Advantageously, the polymers used in the multicomponent spunbonded nonwoven according to the invention contain insoluble additives, such as pigments, fillers, light stabilizers, and also soluble additives. The use of said additives in the polymers used allows adaptation to customer-specific requirements. The multicomponent filaments and the monocomponent filaments of the multicomponent spunbonded nonwoven according to the invention are formed as solid or hollow or as a mixture of solid and hollow filaments. Depending on the requirements of the individual filament types and the multicomponent spunbonded nonwoven fabric resulting therefrom, this can influence the textile-physical properties and possibly save expensive raw material.

The method according to the invention for producing the multicomponent spunbonded nonwoven fabric comprises providing at least two rows of spinnerettes with uniform spinneret orifices which produce multicomponent filaments of differing elementary filament counts or a blend of monocomponent filaments in a common spinner and drawer , laid down to a spunbonded fabric and solidified by hydrofluidic treatment and split into the elementary filaments. The hydrofluidic consolidation may be preceded by a mechanical or thermal pre-consolidation process. By the method according to the invention, multicomponent spunbonded nonwovens are obtained, which consist of layers having a different filament titer and which thereby combine textile-physical properties which hitherto could only be achieved by joining separately produced layers.

Advantageously, the method according to the invention is further developed in such a way that the order of the spinning stations with respect to the depositing belt is selected so that a titre gradient of the filaments from one main side to the other of the multi-component spunbonded fabric or from the center of the multi-component spunbonded nonwoven fabric is achieved in terms of its thickness to the main sides of the multi-component spunbonded fabric out.

The order of the spinning stations can also be selected in the above sense such that alternating, repetitive titer gradients in the running or cross-sectional direction of the nonwoven fabric are produced.

In this way, the method according to the invention makes it possible to produce multicomponent spunbonded fabrics specifically for different applications.

The spun-bonded nonwovens according to the invention are advantageously used for the production of textile products, artificial leather, polishing cloths or filter media.

The invention will be explained in more detail below with reference to exemplary embodiments:

In the examples described below, two extruders were available, which supplied the spinning pumps in front of the spin packs with polymers via heated tubes of symmetrical geometry (in length and diameter). As a result of this arrangement, the same amount of polymers which are in the same quantitative ratio to one another everywhere (eg polyethylene terephthalate / polyamide 6 PET / PA6 = 70/30) is initially present on all spinning pumps. Throughput and quantitative ratio of the polymers retrieved by the spinning pumps are variable, but not completely free, since the spinning positions communicate with each other via the pipe feed.
This arrangement is not mandatory, but further degrees of freedom could only be ensured by conversions to the spin line, which lead to greater freedom in product design.
That is, the examples described below relate to bicomponent filaments, here of PET and PA6, here in constant volume ratio PET / PA6 = 70/30 and with varying filament numbers per spin pack and varying segment numbers per filament type per spin pack. An extension of the plant freedom (number of extruders, geometry of the tubes ...) in the sense described above, as well as other polymer pairs lead to an expansion of the examples described below.

Comparative example

Surface goods each with a uniform titer:

As described in the document EP 0 814 188 B1, samples were produced under almost constant conditions with regard to spinning and stretching conditions and under adapted storage conditions, which aim at the best possible uniformity with respect to the weight per unit area of the area goods Fluid jet strengthening split and solidified.
The aim was to determine to what extent which textile-physical properties of comparable fabrics depend on the titre of the filaments.

• darin sind;
• am Filament

  End-Titer

  Titer nach Fluidstrahlverfestigung und Aufsplitten der Segmente

  cN/Tex

  Zugfestigkeit des Einzelfilamentes, verstreckt, aber nicht gesplittet

  Elongation

  Dehnung des Einzelfilamentes, verstreckt, aber nicht gesplittet

• an der Flächenware

  Opt. Aspekt

  Beurteilung des optischen Aspektes nach Note (15 = best)

  Griff

  Griffbeurteilung nach Note (15 = best)

  A

  A-Seite

  B

  B-Seite

  I

  längs

  q

  quer

  WRK

  Weiterreisskraft [N], hier normiert auf pro 1 g/m² Flächengewicht

  HZK

  Höchstzugfestigkeit bei Bruch [N/5cm], normiert auf pro 1 g/m²

  Dehn

  Dehnung bei Bruch (I+q)/2

  Modul (5%spez)

  Kraft bei 5% Dehnung (I+q)/2

  Abrieb

  Abrasionsfestigkeit mit optischer Beurteilung (intern, 1 = best)

The results are shown in Table 1:

• in it are;
• on the filament

  End titer

  Titers after fluid jet consolidation and splitting of the segments

  cN / Tex

  Tensile strength of single filament, stretched but not split

  elongation

  Elongation of the individual filament, stretched, but not split

• on the fabric

  Opt. Aspect

  Assessment of the optical aspect by grade (15 = best)

  Handle

  Handle evaluation by grade (15 = best)

  A

  A side

  B

  B-side

  I

  along

  q

  crosswise

  WRK

  Tear strength [N], normalized to per 1 g / m ² basis weight

  HZK

  Maximum tensile strength at break [N / 5cm], normalized to per 1 g / m ²

  Dehn

  Elongation at break (I + q) / 2

  Module (5% spec)

  Force at 5% strain (I + q) / 2

  abrasion

  Abrasion resistance with optical evaluation (internal, 1 = best)

• Die Zugfestigkeit und die Dehnung der ungesplitteten Filamente schwanken in einem üblichen Bereich, eine Abhängigkeit vom Titer nach Splitten ist nicht feststellbar.
• Der Splittgrad scheint sich in zwei Bereiche unterteilen zu lassen, nämlich kleiner oder größer als 0,2 dtex.
• Die Flächengewichte schwanken von 100 - 117 g/m², jedoch wurden die die betreffenden Werte normiert auf pro 1 g Flächengewicht.
• Für die normierte Weiterreissfestigkeit lässt sich eine direkte Abhängigkeit von Titer zeigen; mit steigendem Titer steigt die Weiterreissfestigkeit, das wurde qualitativ erwartet, ist jedoch quantitativ nicht einzuschätzen.
• Für die normierte Höchstzugfestigkeit lässt sich auch eine abnehmende Tendenz mit abnehmendem Titer zeigen, was nicht erwartet wurde, da die Werkstoffe, bzw. deren Module die gleichen sind und die Gesamtquerschnittsfläche, die sich aus der Summe der einzelnen Filamentquerschnittsflächen ergibt, bei gleichem bzw. normiertem Flächengewicht auch identisch sind.
• Je feiner der Titer, desto besser ist offensichtlich auch die Verfestigung /Verflechtung durch die Fluidstrahlverfestigung - dies kann der Abriebfestigkeit entnommen werden.
• Die Tendenz der steigenden Abrieb- oder Pilling-Festigkeit mit fallendem Titer lässt sich auch der Oberflächenrauhigkeit nach Färben entnehmen, hierzu s. Bild 1.

The table (arranged according to falling titre after splits) is removable:

• The tensile strength and the elongation of the unsplit filaments vary in a common range, a dependence on the titer after splitting is not detectable.
• The degree of splitting seems to be subdivided into two areas, namely smaller or larger than 0.2 dtex.
• The basis weights vary from 100 to 117 g / m ² , but the values in question were normalized to per 1 g basis weight.
• For the normalized tear propagation resistance a direct dependence of titers can be shown; As the titer increases, the tear propagation resistance increases, which was qualitatively expected, but can not be estimated quantitatively.
• For the normalized maximum tensile strength, a decreasing tendency with decreasing titre can also be shown, which was not expected because the materials or their modules are the same and the total cross-sectional area, which results from the sum of the individual filament cross-sectional areas, is the same or normalized Grammage are also identical.
• The finer the titer, the better the hardening / intertwining due to the fluid beam hardening - this can be taken from the abrasion resistance.
• The tendency of increasing abrasion or pilling strength with decreasing titre can also be deduced from the surface roughness after dyeing. Image 1.

It should be noted that the sheets are formed solely by fluid jet consolidation, i. without any chemical or thermal bonding, solidified (in the sense of felting).

In Table 1, * means:

The "split titer" (titer after split) given here is the average titer of both segment types. Assuming an approximately equal density of the two polymers (PET approx. 1.38, PA6 approx. 1.13 g / m ³ ), a volume ratio of PET / PA 2/3: 1/3 indicates that the titer of the Polyester segment must be about twice as large as that of the polyamide segment.

Based on these and analogous series of experiments, an "optimized compromise of properties" has been set for the industrial production of microfilament sheets which allow the finest possible optical aspect, grip and surface resistances without causing sagging, e.g. the tear propagation or ultimate tensile strengths which meet the minimum requirements, e.g. required by the European Clothing Asso- ciation Committee (ECLA).

The document EP 0 814 188 B1 describes a production method in which multicomponent filaments of different configurations are mentioned, but not the production of sheet products from multifilaments of different configuration within this fabric. This additional "degree of freedom" of the process may result in product benefits for many, some examples exemplified herein, as follows.

example 1

• a) Die mittleren zwei Lagen werden als Homofilamente mit 70 % PET und 30 % PA gefahren, wobei sich die Anzahl der Spinndüsen für PET, bzw. für PA6 70 : 30 verhalten, und die beiden Lagen Monofilamente in der Mitte des Flächengebildes einen Titer von 2 - 2,6 dtex aufweisen, und die anderen, hier jeweils 5 Lagen mit einem PET/PA6-Verhältnis von ebenfalls 70/30, einen Ausgangstiter von 2,4dtex aufweisen und somit nach Splitten der 16 Segmente einen mittleren Titer von 0,15dtex aufweisen. Mit dieser Rezeptur weisen die Flächenwaren auf beiden Seiten typische Mikrofaser-Optik und typischen -Griff auf.
  Während Flächenwaren mit einheitlichem Titer von 0,15dtex den Ansprüchen der ECLA für Hemden, Pyjamas, T-Shirts u.ä., v.a. hinsichtlich der Weiterreissfestigkeit genügen, können mit dieser Rezeptur auch die ECLA-Ansprüche für weiterreiss-resistentere Kleidungsstücke wie Hosen oder Jacken, sowie auch textilem Schuh-Obermaterial erfüllt werden, ohne im Flächengewicht zulegen zu müssen.
• b) Die mittleren vier Lagen werden aus PIE 8, die anderen, jeweils vier äußeren Lagen, werden aus PIE 16, mit 70 % PET und 30 % PA gefahren. Alle Filamente weisen einen Ausgangstiter von 2,4dtex auf und werden somit nach Splitten der 8 bzw. 16 Segmente, jeweils mittlere Titer von 0,3 dtex bzw. 0,15 dtex erhalten.
  Mit dieser Rezeptur weisen die Flächenwaren auf beiden Seiten typische Mikrofaser-Optik und typischen -Griff auf. Diese Rezeptur zeigt die Möglichkeit auf, die Weiterreissfestigkeit nur in geringem Masse zu erhöhen, dort wo sie aufgrund statistischer Schwankungen im Produkt nur graduell angehoben werden muss oder z.B. für Kleidungsstücke, bei denen z.B. aufgrund des für Mikrofaserprodukte typisch hohen Isolationsvermögens ein geringeres Flächengewicht gewünscht wird ohne das bestimmte Mindestanforderungen, v.a. bzgl. der Weiterreissfestigkeit, unterschritten werden dürfen (z.B. leichte Sommerkleidung).

In-line isotropically distributed reinforcement in the center of the fabric to increase the tear propagation resistance:

• a) The middle two layers are run as homofilaments with 70% PET and 30% PA, with the number of spinnerets for PET, or for PA6 70:30 behave, and the two layers of monofilaments in the middle of the fabric a titer of 2 - have 2.6 dtex, and the others, here in each case 5 layers with a PET / PA6 ratio of likewise 70/30, have a starting titer of 2.4 dtex and thus after splitting the 16 segments a mean titer of 0.15dtex exhibit. With this formulation, the fabrics on both sides have typical microfiber look and feel.
  Whilst flat goods with a uniform titer of 0.15dtex meet the requirements of the ECLA for shirts, pajamas, T-shirts and the like, especially with regard to tear propagation resistance, this formula also allows ECLA claims for more tear-resistant garments such as trousers or jackets , as well as textile shoe upper are met, without having to gain in grammage.
• b) The middle four layers are made of PIE 8, the others, four outer layers each, are made of PIE 16, with 70% PET and 30% PA. All filaments have an initial titer of 2.4 dtex and thus are obtained after splitting the 8 or 16 segments, in each case average titers of 0.3 dtex and 0.15 dtex, respectively.
  With this formulation, the fabrics on both sides have typical microfiber look and feel. This formula shows the possibility of only slightly increasing the tear propagation resistance, where it has to be raised only gradually due to statistical fluctuations in the product or, for example, for garments in which, for example, due to the Microfiber products typically high insulation capacity a lower basis weight is desired without the minimum requirements, especially with regard to the tear propagation resistance, may be below (for example, light summer clothing).

Example 2

• a) Vier Lagen PIE 8 werden vorgelegt, darauf werden vier Lagen PIE 16 und darauf vier Lagen PIE 32 gelegt, jeweils mit einem Ausgangs-Titer von etwa 2,5 dtex vor Splitten, sowie einem PET/PA6-Verhältnis von 70/30 und einer beidseitig symmetrischen Fluidstrahlverfestigung.
  Mit dieser Rezeptur können die Ansprüche an ein Tuch für eine automatisierte Politur erreicht werden. Während einerseits ein möglichst feiner Titer zur möglichst feinen und kratzfreien Politur gewünscht wird, konnte die Erhöhung des Titers bei einem Teil der Lagen, die zur Konfektionierung notwendige Weiterreisskraft sicherstellen. Dadurch, dass das Produkt nicht symmetrisch sondern mit einem Titergradienten hergestellt wird, kann erreicht werden, dass die Seite des gröberen Titers an den Polierteller angeklebt und wieder entfernt werden kann, ohne dass die Mikrofasern dabei abreissen und die mehrfach wiederverwendbare Klebefläche in zu hohem Masse durch abgerissene Fasern verschmutzt wird, während die Seite mit dem sehr feinen Titer von nur 0,05dtex optimale Polierergebnisse erbringt (Tabelle 2).
• b) Zwei Lagen Homofilamente werden vorgelegt, darauf werden zwei Lagen s/s, zwei Lagen PIE 8, zwei Lagen PIE 16, und vier Lagen PIE 32 gelegt, jeweils mit einem Ausgangs-Titer von etwa 2,5 dtex vor Splitten, sowie einem PET/PA6-Verhältnis von 70/30 und einer beidseitig symmetrischen Fluidstrahlverfestigung.
  Dieses Produkt wurde anschließend mit gelöstem Poly-Urethan getränkt, das Poly-Urethan koaguliert, das Produkt gefärbt, die Feinseite geschliffen und das Produkt nochmals gefärbt, um ein hochwertiges Suede-like (wildlederartiges) Material zu erhalten.
  Dieser Aufbau ist dem natürlichen Leder nachempfunden. Hiermit können einseitig optisch und grifflich hervorragende Syntheselederqualitäten erreicht werden, die gleichzeitig hervorragende mechanische Eigenschaften aufweisen, die z.B. für Schuh-Obermaterial, für Polstermöbel oder auch für Autositze eingesetzt werden können, ohne dass es einer heute üblichen, rückseitigen Verstärkung durch ein stützendes, nicht ausbeulendes Gewebe bedarf. (Tabelle 2).
  

In skin or leather, the collagen strands of deeper lying layers of tissue are getting finer upwards. At least in the early years of life, nature ensures that the mechanical resistance and youthful smoothness of the skin can be achieved simultaneously. This should be modeled in experiments with titer gradients across the thickness of the sheet from one side to the other:

• a) Four layers of PIE 8 are presented, then four layers of PIE 16 and then four layers of PIE 32 are laid, each with an initial titer of about 2.5 dtex before splitting, and a PET / PA6 ratio of 70/30 and a bilaterally symmetrical fluid beam hardening.
  With this recipe, the requirements for a cloth for an automated polishing can be achieved. While on the one hand a very fine titer is desired for a very fine and scratch-free polish, the increase in titer could ensure in a part of the layers, the tearing force necessary for confectioning. Because the product is not produced symmetrically but with a titer gradient, it can be achieved that the side of the coarser titer can be glued to the polishing plate and removed again, without the microfibers tearing off and the reusable adhesive surface becoming too strong torn off fibers, while the side with the very fine titer of only 0.05 dtex yields optimum polishing results (Table 2).
• b) Two layers of homofilaments are submitted, then two layers s / s, two layers of PIE 8, two layers of PIE 16, and four layers of PIE 32 laid, each with a starting titer of about 2.5 dtex before splitting, and a PET / PA6 ratio of 70/30 and a bilaterally symmetrical fluid jet hardening.
  This product was then soaked in dissolved poly urethane, the poly-urethane coagulated, the product dyed, the fine side sanded, and the product dyed again to obtain a high quality suede-like (suede-like) material.
  This structure is modeled on the natural leather. This can be achieved on one side visually and handily outstanding synthetic leather qualities, which also have excellent mechanical properties that can be used eg for shoe upper, upholstered furniture or car seats, without it being a usual today, back reinforcement by a supporting, not bulging Tissue needs. (Table 2).
  

Claims (11)

Multi-component spunbonded nonwoven consisting of at least two mutually interfacial polymers originating from at least one spinneret having uniform spinneret openings and hydrodynamically stretched, laid down and solidified, characterized in that the multicomponent spunbonded nonwoven consists of different filaments containing or containing at least two polymers consists of a mixture of multicomponent filaments with monocomponent filaments each containing only one of the polymers, the multicomponent filament consisting of at least two elementary filaments and the denier of the individual filaments by the number of elementary filaments contained in the filaments varied. Multi-component spunbonded fabric according to claim 1, characterized in that the multicomponent filaments consist of 1 to 64 elementary filaments having a denier in the range of 0.05 to 4.8 dtex. Multi-component spunbonded fabric according to claim 1 or 2, characterized in that the monocomponent and the multicomponent filaments have a similar starting titer in the range of 1.5 to 5 dtex. Multi-component spunbonded nonwoven according to claim 1 to 3, characterized in that the polymers used in the same weight ratio in the multi-component filaments and in the mixture of monocomponent filaments are present. Multi-component spunbonded nonwoven fabric according to claim 1 to 4, characterized in that the monocomponent and the multicomponent filaments after their splitting into the elementary filaments have a titer gradient along the z-direction of the sheet-like multi-component spunbonded nonwoven fabric. Multi-component spunbonded fabric according to one of claims 1 to 5, characterized in that the polymers used contain insoluble additives such as pigments, fillers, light stabilizers, and also soluble additives. Multi-component spunbonded fabric according to one of claims 1 to 6, characterized in that the multi-component filaments and the monocomponent filaments are formed as solid or hollow filaments or a mixture of solid and hollow filaments. A process for producing a multicomponent spunbonded nonwoven according to claim 1 to 7, characterized in that at least two spinning stations are provided with uniform spinneret openings, the multi-component filaments with different elementary filament number or a mixture with monocomponent filaments in a common spinning and Create drawing device, this laid down to a spunbonded fabric and solidified by hydrofluidic treatment and split into the elemental filaments. A method according to claim 8, characterized in that the order of the spinning stations with respect to the depositing belt is chosen such that a titer gradient of the filaments from one major side to the other of the multicomponent spunbond web or from the center of the multicomponent spunbonded web in terms of its thickness to the major sides of the multi-component spunbonded fabric is produced. A method according to claim 8, characterized in that the order of the spinning stations with respect to the depositing belt is chosen so that alternating, repeating titer gradients in the running or cross-sectional direction of the nonwoven fabric are produced. Use of a multicomponent spunbonded nonwoven according to claims 1 to 10 for the production of textile products, artificial leathers, polishing cloths or filter media.

Images