EP2061926B1 - Textile product and production thereof - Google Patents

Abstract

The present invention relates to a textile product, in particular an easy-to-clean textile product, based on drawn fibres which each have a polymeric core and a polymeric sheath fully surrounding the core, the polymeric sheath comprising finely divided particles and the drawn fibres having at least partly a surface structure formed by the finely divided particles.

Description

The present invention relates to a textile product, a process for its preparation and uses of the textile product.

Items with difficult to wet surfaces have a number of interesting properties. They offer no residue to residues of any kind and can therefore be cleaned very easily. From the EP 0 772 514 B1 It is known, for example, that self-cleaning surfaces of objects can be produced by an artificial surface structure of elevations and depressions, wherein at least the elevations consist of hydrophobic polymers or durable hydrophobicized materials. For the production of such surfaces, in particular the sticking of hydrophobic polymers or hydrophobized materials present in powder form to the objects in question is proposed. The disadvantage here is that the use of adhesives on an industrial scale is often problematic.

In more recent processes, hydrophobic particles in the form of dispersions are applied to the surface of the objects in question, in particular of textile goods, in order to produce self-cleaning surfaces. After removal of the dispersants, the applied particles are more or less firmly bonded to the articles and form the desired surface topography. For example, such modified textile goods from the DE 101 18 346 A1 and the DE 101 18 348 A1 known. However, such surface structures often have not too much resistance. Thus, the surface structures described above by particular several washing or cleaning steps are destroyed, causing the objects lose their good Abreinigungsverhalten.

In contrast, in the US 2006/0085921 A1 In particular, textile structures with self-cleaning surfaces are disclosed whose surface structure is based on an improved adhesion of hydrophobic particles on the surface of the textile structures. For this purpose, the textile structures are subjected to a surface modification, in particular a plasma treatment or a chemical etching process. The thus roughened and optionally functionalized surface of the textile structures allows improved fixation of the hydrophobic particles on the surface of the textile structures, whereby overall the durability of the formed surface topography can be increased.

Another variant of polymer fibers with self-cleaning properties comes from the DE 10129116 A1 out.

In recent years, there has been a steady demand for easily cleanable items. This applies in particular to the field of textiles.

The present invention thus has the object to provide a textile product which circumvents known from the prior art disadvantages and has an especially easy to clean surface.

This object is achieved by a textile product, in particular an easily cleanable textile product, based on stretched fibers which each have a polymeric fiber core and a polymeric sheath surrounding the polymer core core polymeric sheath, wherein the polymeric sheath contains finely divided particles and the drawn fibers at least partially have on their surface a structure which is formed by the finely divided particles. The finely divided particles are separated by a Surface etching at least partially exposed on the surface of the drawn fibers.

The invention provides textile products with a preferably less soiling and, in particular, easily cleanable surface. The good Abreinigungsverhalten the surface is due to a special surface structure of the textile product according to the invention, which is formed by at least a portion of the finely divided particles. The surface structure formed by the finely divided particles offers little wetting possibilities for substances and liquids. Thus, a simple and particularly convenient cleaning of the textile product according to the invention is possible.

In a preferred embodiment, the textile product according to the invention has a base and a fine structure, wherein the basic structure is suitably formed by the drawn fibers. The fine structure is preferably formed by the finely divided particles. Due to the fine structure only small adhesive surfaces for substances and liquids are provided on the surface of the textile product according to the invention, whereby the strength of a possible adhesion is advantageously reduced.

Preferably, the polymeric fiber core and the polymeric sheath surrounding it over its entire surface form a so-called core-shell structure. In particular, the polymeric fiber core effects the required strength of the drawn fibers. The polymeric sheath advantageously allows incorporation of the finely divided particles into the drawn fibers. In addition, the polymeric sheath ensures a certain abrasion resistance of the textile product according to the invention.

According to the invention, the drawn fibers are in particular single fibers, in particular individual filaments or staple fibers. The staple fibers are produced regularly by cutting to length the individual filaments.

In a preferred embodiment, the drawn fibers are each a composite of fibers, in particular a yarn. For example, the composite of fibers may consist of 20 to 240 individual filaments. The drawn fibers preferably have a diameter of between 5 and 50 μm, in particular between 10 and 25 μm. According to the invention, the drawn fibers can have a strength of> 30 cN / tex, in particular> 35 cN / tex, based on a titer of from 5 to 350 tex, in particular based on a titer of from 5 to 150 tex.

In a further embodiment, the finely divided particles are at least partially embedded completely in the polymeric sheath. According to the invention, the finely divided particles can in particular be embedded in multiple layers in the polymeric sheath.

The finely divided particles preferably have a rough surface. A rough surface is particularly advantageous for a better embedding of the finely divided particles in the polymeric sheath. The finely divided particles themselves preferably have a structuring, in particular a nanostructuring. This contributes to a further refinement of the surface structure of the textile product according to the invention. The finely divided particles are in particular mechanically stable. Furthermore, the finely divided particles can be formed sharp-edged. The finely divided particles may in particular be environmentally resistant particles. According to the invention, it is preferred that the finely divided particles are porous, in particular nanoporous.

According to the invention, the finely divided particles may be spherically shaped particles. The particles can be present in particular in the form of aggregates. Preferably, the finely divided particles have a diameter between 100 nm and 1 .mu.m, in particular between 300 nm and 600 nm. In a further embodiment the proportion of finely divided particles in the polymeric sheath 15 to 70 vol .-%, in particular 20 to 60 vol .-%, preferably 35 to 45 vol .-%.

In a further embodiment, the finely divided particles have an elongated extent (dimension). Preferably, the finely divided particles have a so-called aspect ratio (depth or height to the smallest lateral extent) of 1: 2 to 1:10. The finely divided particles preferably have a longitudinal axis, which is aligned orthogonal to the longitudinal axis of the drawn fibers.

The finely divided particles can be present in the form of agglomerates in a further embodiment. In this embodiment, the agglomerates represent the effective order of magnitude. Alternatively or in combination, it may be provided according to the invention that the finely divided particles are present as individual particles, i. agglomerate-free. The particles may also be inorganic and / or organically modified.

In a particularly preferred embodiment, the finely divided particles are formed from mineral materials. The mineral materials may in particular be barium sulfate, silicon dioxide and / or calcium carbonate. Furthermore, the finely divided particles may be ceramics, in particular oxidic ceramics.

In a further embodiment, the finely divided particles are formed from metals, for example from silver, or metal oxides, in particular from titanium dioxide, zinc oxide, indium tin oxide or aluminum oxide.

In a further embodiment, the finely divided particles are formed from polymers. The polymers may be in particular to Hybrid polymers, for example, so-called ORMOCER®e act. The ORMOCER®s are inorganic-organic hybrid polymers which have both properties of inorganic and organic materials.

In a preferred embodiment, the finely divided particles are formed from hydrophobic materials, in particular from hydrophobic polymers. In this case, the hydrophobic finely divided particles are at least partially exposed at the surfaces of the drawn fibers. The hydrophobic materials may in particular be fluoropolymers, preferably fluorocopolymers.

In a further embodiment, the finely divided particles are selected from the group comprising silicates, silicic acids, kieselguhr and / or pigments. Particularly suitable silicas are pyrogenic silicic acids or so-called precipitated silicas.

According to the invention, the finely divided particles can furthermore be formed from organic substances. In the case of organic substances, these are expediently compounds which are stable under the conditions of a textile further processing of the drawn fibers and in particular with respect to washing and cleaning steps.

In principle, all spinnable materials come into consideration as materials for the polymeric fiber core. The materials for producing the polymeric fiber core may in particular be melt, gel or solution spinnable. Furthermore, dry spinnable materials can be used to make the polymeric fiber core.

The polymeric fiber core is preferably formed from synthetic polymers, in particular from synthetic copolymers. The polymers can be of any nature. Preferably, the polymers are to thermoplastic polymers. Examples of suitable polymers according to the invention are polyesters, polyamides, polyether ketones, polyolefins and fluoropolymers. Suitable polyolefins are in particular polyethylene, polypropylene and / or polyacrylonitrile. Furthermore, the polyolefins may in particular be high modulus polyethylenes. The use of high modulus polyethylene is particularly preferred in the case of a gel spinning process. The polyesters are preferably polyalkyl terephthalates, in particular polyethylene terephthalate and / or polybutylene terephthalate. The polyamides may be aliphatic and / or aromatic polyamides (so-called aramids). Polyamides are in particular polycaprolactam, poly-hexamethylene-1,6-diamine-adipamide, poly-hexamethylene-1,6-diamine-sebacamide, poly-hexa-methylene-1,6-diamine-terephthalamide, poly-hexamethylene-1, 6-Diamin-Isophthalsäurediamid, poly-phenylene-1,4-diamine-terephthalic acid diamide and / or poly-phenylene-1,4-diamine-Isophthalsäurediamid into consideration. The fluoropolymers may in particular be polyvinylidene difluoride. The fluoropolymers may in particular be perfluorinated. The fluoropolymers are preferably polymers based on at least one monomer selected from tetrafluoroethylene, hexafluoropropylene and perfluorovinyl ether.

Also suitable as suitable materials for the polymeric fiber core are natural polymers or polymers derived from natural polymers. For example, the polymeric fiber core may be formed of viscose.

The polymeric sheath is preferably formed of a different material than the polymeric fiber core. The material of the polymeric sheath is preferably more extensible in the unstretched state than the material of the polymeric fiber core. As materials for the polymeric sheath are in particular polyolefins, polyesters, polyamides or fluoropolymers, with polyesters being particularly preferred. The polyesters are, in particular, polyethylene and / or polybutylene terephthalate, preferably polybutylene terephthalate. For further details on the polymers in question, reference is made to the description so far, in particular to the polymers described for the preparation of the polymeric fiber core.

In a preferred embodiment, the polymeric fiber core is formed of polyethylene terephthalate (PET) and the polymeric sheath is polybutylene terephthalate (PBT).

According to the invention it can also be provided that the polymeric sheath and the polymeric fiber core are formed of the same material.

In a further embodiment, the proportion of the polymeric sheath in the drawn fibers is 15 to 35% by volume, in particular 20 to 30% by volume.

In a preferred embodiment, the textile product according to the invention is at least partially hydrophobic on its surface. According to the invention, the textile product may have at least partially a hydrophobic coating on its surface. The layer thickness of the hydrophobic coating can be in particular up to 200 nm. The layer thickness is preferably between 50 nm and 100 nm. The hydrophobic coating is preferably formed from at least one compound from the group comprising alkylsilanes, fluoroalkylsilanes, disilazanes, silicones, silicone-based substances, waxes and paraffins. The hydrophobic coating may further be a permanent or reactivatable coating. In this way, the attachment possibilities for substances and liquids on the Surface of the textile product can be additionally reduced. This improves with particular advantage the cleaning performance of the textile product according to the invention.

According to the invention, the textile product can furthermore be a one-dimensional textile structure, in particular a fiber. Preferably, the textile product is a yarn. The textile product according to the invention can be designed, for example, as a thread, cord or rope.

In a particularly preferred embodiment, the textile product according to the invention is an at least two-dimensional textile structure. Preferably, the textile product is a flat textile product. The textile product may be, in particular, knitted fabrics, woven fabrics, nonwovens or scrims. As knits are preferably knitted fabrics and knits into consideration. The fabrics may in particular have an atlas, twill or plain weave.

In a further embodiment, the textile product according to the invention is clothing, a medical textile, a home textile, an interior textile, a semi-technical textile or a technical textile. As interior textiles are mainly textiles for the interior of transport, transport and transport into consideration, such as motor vehicles, aircraft and the train. The interior textiles are in particular seat covers, side panels and sky. Particularly preferred technical textiles are filters, membranes, awnings, wallpapers, laminates and tarpaulins.

• Ummantelung eines Faserkernpolymers mit einem mit feinteiligen Partikeln versehenen Ummantelungspolymer unter Ausbildung von ummantelten Fasern,
• Verstreckung der ummantelten Fasern,
• textile Verarbeitung der verstreckten Fasern unter Ausbildung eines mindestens zweidimensionalen Textilproduktes,
• Oberflächenätzung des Textilproduktes unter mindestens teilweiser Freilegung der Struktur der Partikel an der Oberfläche des Textilproduktes.

The present invention further relates to a process for producing a textile product, in particular an easily cleanable textile product, comprising the steps

• Sheathing a fiber core polymer with a finely divided sheath polymer to form sheathed fibers,
• Stretching the coated fibers,
• textile processing of the drawn fibers to form a textile product which is at least two-dimensional,
• Surface etching of the textile product with at least partial exposure of the structure of the particles on the surface of the textile product.

In principle, various techniques can be used to provide the shell polymer with the particles. Usually, the particles are incorporated into the sheath polymer. In a preferred embodiment, the production of the particulate encapsulant polymer is accomplished by compounding. In this case, the particles are added to the sheath polymer to form a so-called compound. The compounding is usually carried out in an agitator. In a further embodiment, the production of the coated shell polymer takes place in a masterbatch process. To produce a masterbatch, a concentrated, in particular highly concentrated, mixture of the shell polymer and the particles is produced. For cladding the fiber core polymer, the masterbatch is usually diluted. Furthermore, it can be inventively provided that the sheath polymer is provided in its synthesis with the particles. The coating polymer provided in this way can be provided in particular as granules.

The sheathing of the fiber core polymer with the sheath polymer is expediently such that the sheath polymer is introduced to the outer periphery of the fiber core polymer as long as the fiber core polymer is still soft. The cladding of the fiber core polymer preferably takes place by spinning, in particular by coextrusion, of the fiber core polymer and of the finely divided sheath polymer. The sheathing of the fiber core polymer can be carried out before or after its exit from a spinneret, wherein the sheath of the polymeric fiber core is preferred before it exits the spinneret. The spinnerets may for example have a diameter of about 250 microns. In particular, profiled spinnerets can be used as spinnerets.

In a preferred embodiment, the coated fibers are processed before stretching into a composite of fibers, in particular into a yarn. Preferably, the sheathed fibers are spun as a composite of fibers. The spun composite of fibers is used regularly to make knits and fabrics. Furthermore, the sheathed fibers can be spun as single or monofilaments. The spinning of single filaments is conveniently carried out for the production of nonwovens and loops.

The stretching of the coated fibers can be carried out on the basis of single filaments or yarns. Preferably, yarns are drawn. The stretching of the coated fibers can be carried out according to the invention in a single-stage spinning process. A single-stage spinning process is understood to mean the direct stretching of fibers on the spinning machine. For example, in the direct spinning process, the FDY (Fully Drawn Yarn) and the HOY (Highly Oriented Yarn) are produced. In another embodiment, the stretching The coated fibers are carried out in a two-stage manufacturing process. In this case, the coated fibers are drawn after spinning in a separate process step. Examples of such two-stage production processes are the Partially Oriented Yarn (POY) process, the Medium Oriented Yarn (MOY) process, and the Low Oriented Yarn (LOY) process.

In another embodiment, the drawn fibers may be textured.

In another embodiment, the composite of fibers made from the drawn fibers is subjected to a finish prior to textile processing into the at least two-dimensional textile product. The coating produces smooth fiber surfaces. This is preferably done by applying a suitable Beschampfungsmaterials. This serves to improve the further processability of the drawn fibers.

The surface etching is preferably carried out on the textile product obtained after the textile processing of the drawn fibers. By the surface etching, the finely divided particles are at least partially exposed on the surface of the drawn fibers. The surface etching is preferably carried out so that only a part of the particle surfaces is exposed. Preferably, 20 to 80%, in particular 30 to 60%, of the respective particle surfaces are exposed by the surface etching. Thus, in a particularly advantageous manner, a fine surface topography of the textile product is produced by the etching process.

In a preferred embodiment, only a part of the fibers of the textile product is subjected to surface etching. According to the invention In particular, it may be provided that the fiber surfaces are only partially etched. Preferably, only certain surfaces, in particular the outer or use surfaces, of the textile product are subjected to surface etching.

In a further preferred embodiment, the surface etching of the at least two-dimensional textile product is carried out by a plasma treatment. The surface etching of the at least two-dimensional textile product can be carried out according to the invention by means of a microwave plasma treatment. Preferably, the surface etching of the at least two-dimensional textile product is carried out with a low-pressure plasma treatment. Alternatively or in combination, the surface etching at atmospheric pressure may be carried out as so-called atmospheric plasma treatment. To generate an atmospheric pressure plasma, it is also possible to use a suitable inert or process gas, for example oxygen, instead of air.

According to the invention, it may further be provided that the textile product for surface etching is subjected to a corona treatment, for example under an air atmosphere, or to a dielectric barrier discharge.

In a further preferred embodiment, the at least two-dimensional textile product is subjected to a chemical surface etching. The chemical surface etching is preferably carried out wet-chemically. This can be carried out in particular using acids or bases. Suitable acids are, for example, methanoic acid or trifluoroacetic acid. As suitable bases are preferably used alkali solutions. According to the invention it is provided in particular that the bases are present as alcoholic solutions. So the surface etching of at least two-dimensional textile product using an ethanolic potassium hydroxide solution.

Other methods for performing a surface etching of the at least two-dimensional textile product are laser ablation, solubilization with suitable solvents and thermal processes. For example, a thermal etching process can be carried out by IR irradiation (infrared irradiation) of the at least two-dimensional textile product.

In a further embodiment, the at least two-dimensional textile product is at least partially hydrophobically coated on its surface after the surface etching. According to the invention, it is further provided in particular that the hydrophobic coating of the textile product is made only on certain surfaces, in particular on the outer or use surfaces of the textile product. For hydrophobic coating, the textile product is preferably treated with a dispersion containing hydrophobic materials. In particular, aqueous dispersions are used as dispersions. With regard to the materials which are suitable for the hydrophobization of the textile product, reference is made to the previous description.

In a further embodiment, the at least two-dimensional textile product is subjected to a fabrication. The assembly can be carried out, for example, before the surface etching of the textile product. According to the invention, it is also possible for the textile product to be made up after its surface etching, in particular according to its hydrophobic finish.

The present invention also relates to the use of the textile product according to the invention for the production of textile articles. The textile articles are in particular clothing, medical-technical textiles, home textiles, interior textiles, semi-technical textiles and / or technical textiles. Particularly preferred textile articles are filters, membranes, laminates, awnings, wallpapers, seat covers and / or tarpaulins. For further features and details, reference is made to the previous description.

Further features and details of the invention will become apparent from the following description of the figures and from the example. In this case, the individual features can be realized individually or in combination with each other alone.

figure description

FIG. 1 shows graphically the cleaning behavior of different pieces of tissue compared to fluorescent particles. The fabric pieces examined were based on textile-processed yarns which predominantly had a core-shell structure, the shell partly containing barium sulfate particles. The pieces of fabric were partially subjected to surface etching by a low pressure plasma treatment.

The ordinate shows the achieved cleaning in [%]. The abscissa shows the tissue pieces tested for their cleaning behavior, the abbreviations given there having the following meanings: S 0-O: on its upper side untreated fabric piece based on yarns with a core-shell structure and barium sulfate in the shell, O 300: fabric piece treated on its upper side (treatment strength 300 W) on the basis of yarns with a core-shell structure and barium sulfate in the shell, O 450: fabric piece treated on its upper side (treatment strength 450 W) on the basis of yarns with a core-shell structure and barium sulfate in the shell, S 0 -U: on its underside untreated fabric piece based on yarns with a core-shell structure and barium sulfate in the shell, U 300: fabric piece treated on its underside (treatment strength 300 W) on the basis of yarns with a core-shell structure and barium sulfate in the shell, U 450: fabric piece treated on its underside (treatment strength 450 W) based on yarns with a core-shell structure and barium sulfate in the shell, W 0: untreated fabric piece based on pure PET yarns, W 300: fabric piece treated on its upper side (treatment strength 300 W) on the basis of pure PET yarns.

The core-shell structure of S 0-OO 450, S 0-U, U 300 and U 450 had the following structure:
The core consisted of a standard PET (RT39, KoSa) and the sheath of a co-polyester of polyethylene terephthalate and polybutylene terephthalate (Griltex D1655E, EMS-Chemie).

The graph shows that the pieces of tissue whose yarns contained barium sulfate particles, after the plasma treatment, compared to the other tissue pieces examined significantly better cleaning behavior compared to the fluorescent particles had (second, third, fifth and sixth bars from the left).

In contrast, untreated pieces of fabric whose yarns contained barium sulfate particles exhibited comparatively poor cleaning performance (first and fourth bars from the left). Also, a poor Abreinigungsverhalten showed pieces of fabric based on pure PET yarns, regardless of whether the relevant pieces of tissue were previously subjected to a plasma treatment or not (second and first bar from the right).

Example 1: Production of a fabric piece

A co-polyester Griltex D1655E (polyethylene terephthalate (PET) co-polyester and polybutylene terephthalate (PBT), EMS-Chemie) was filled with barium sulfate so that the content of barium sulfate in the copolyester was 50% by volume. Together with a standard PET (RT39, KoSa), the sheath polymer was spun to form a core-sheath fiber having 36 individual filaments at typical polyester temperatures. The ratios of the spinning pumps were adjusted so that the ratio of sheath to core was 30:70. The POY fiber was stretched three times and coated to be entered as a weft in tissue. The fabric was made on a 1.7m rapier weaving machine. The chain used was an unfilled polyester yarn with a comparable titer. So that the new textile fiber predominantly appears on the upper side of the fabric, a 5: 1 satin weave was produced. Subsequently, a DIN A4 pages large piece of tissue with low pressure plasma at a power of about 450 W for 30 minutes under an oxygen atmosphere (80 Pascals), so that the cladding polymer was partially etched away and the barium sulfate particles were partially exposed at the surface of the tissue piece. Finally, the fabric was treated with commercially available fluorocarbon equipment (Pluvioperl).

Example 2: Measurement of the dynamic roll-off angle

The measurement of the dynamic roll-off angle can be used as a criterion for the hydrophobicity and in particular for the cleaning behavior of a surface. The lower the dynamic roll-off angle, the stronger the hydrophobicity or the better the cleaning behavior of the surface.

In the present case, three different pieces of fabric based on polybutylene terephthalate (PBT) yarns were examined for dynamic roll-off angle. All tissue pieces examined were hydrophobically coated by fluorocarbons. The PBT yarns of two fabric pieces additionally contained barium sulfate particles, wherein in one case the surface of the fabric piece was additionally etched by plasma treatment prior to the hydrophobic coating.

The measurements gave the following result: tissue roll-off PBT yarn (1) > 20 ° PBT yarn with BaSO ₄ (2) about 14 PBT yarn with BaSO ₄ , etched (3) about 5 °

The results make it clear that the etched fabric piece (3) has the smallest dynamic roll-off angle and thus the best cleaning performance.

Claims (17)

1. Textile product, in particular easy to clean textile product, based on drawn fibres each having a polymer fibre core and a polymer sheath surrounding the entire surface of the polymer fibre core, the polymer sheath including fine particles and the drawn fibres having a structure composed of the fine particles at least on part of their surface, characterized in that the fine particles are exposed at least partially on the surface of the drawn fibres by surface etching.
2. Textile product according to claim 1, characterized in that the textile product has a basic structure and a fine structure.
3. Textile product according to claim 2, characterized in that the basic structure is composed of the drawn fibres.
4. Textile product according to claim 2 or 3, characterized in that the fine structure is composed of the fine particles.
5. Textile product according to any of the preceding claims, characterized in that the proportion of fine particles in the polymer sheath is 15 to 70 % by volume, in particular 20 to 60 % by volume, preferred 35 to 45 % by volume.
6. Textile product according to any of the preceding claims, characterized in that the fine particles are composed of mineral materials, in particular barium sulphate, silicon dioxide and/or calcium carbonate, of ceramics, in particular oxide ceramics, metals or metal oxides, in particular titanium oxide or aluminium oxide, and/or polymers.
7. Textile product according to any of the preceding claims, characterized in that the fine particles are composed of hydrophobic materials, in particular hydrophobic polymers.
8. Textile product according to any of the preceding claims, characterized in that the polymer fibre core in each case is composed of synthetic polymers, in particular of the group consisting of polyesters, polyamides, polyetherketones, polyolefins, and fluoropolymers.
9. Textile product according to any of the preceding claims, characterized in that the material of the polymer sheath in the non-drawn condition is more expandable than the material of the polymer fibre core.
10. Textile product according to any of the preceding claims, characterized in that the polymer sheath is composed of synthetic polymers, in particular of the group consisting of polyolefins, polyesters, polyamides, and fluoropolymers.
11. Textile product according to any of the preceding claims, characterized in that the proportion of the polymer sheath in the drawn fibres is in each case 15 to 35 % by volume, in particular 20 to 30 % by volume.
12. Textile product according to any of the preceding claims, characterized in that the textile product is at least partially hydrophobic on its surface.
13. Textile product according to any of the preceding claims, characterized in that the textile product is provided with a hydrophobic coating on at least part of its surface, in particular having a coating thickness from 50 nm to 200 nm, preferred from 50 nm to 100 nm.
14. Textile product according to claim 13, characterized in that the hydrophobic coating is composed of fluorohydrocarbons, in particular fluorohydrocarbon copolymers.
15. Method for production of a textile product, in particular an easy to clean textile product, in particular according to any of the preceding claims, comprising the steps:

    - sheathing a fibre core polymer using a sheathing polymer including fine particles, thereby preparing sheathed fibres,

    - drawing the sheathed fibres,

    - textile processing of the drawn fibres, thereby preparing an at least two-dimensional textile product,

    - surface etching of the textile product, thereby at least partially exposing the structure of the particles on the surface of the textile product.
16. Method according to claim 15, characterized in that the at least two-dimensional textile product is provided with a hydrophobic coating on at least part of its surface, subsequent to the surface etching.
17. Use of a textile product according to any of the claims 1 through 14, for the production of textile articles, in particular of clothing, medical-technical textiles, home textiles, interior equipment textiles, semi-technical textiles, and/or technical textiles.

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