Textile fabric made from bamboo-viscose and its use as garment or mask, as well as a method of making same

Abstract

The present invention relates to a textile fabric, wherein the textile fabric comprises at least bamboo viscose or a bamboo viscose derivative and at least one additive, characterized in that the at least one additive is selected from the group consisting of recycled polyester, elastane, cotton, silk, nonwoven fabric, wool, polyester, recycled cotton, recycled polyamide, polyamide, recycled polypropylene and polypropylene, and that the bamboo viscose or the bamboo viscose derivative has a mass fraction of at least 50 wt.% of the textile fabric, in particular of at least 60 wt.% of the textile fabric, and that the at least one additive has a mass fraction between 1 wt.% and 50 wt.% of the textile fabric, in particular between 2 wt.% and 45 wt.% of the textile fabric or between 5 wt.% and 40 wt.% of the textile fabric.

Description

[0001] The present invention relates to a textile fabric made of a bamboo viscose material and at least one additive, as well as the use of the textile fabric for producing a garment and / or a mask, and its production process.

[0002] Single jersey textiles made of bamboo material for use in socks and underwear are known from the prior art. DE 20 2016 104 745 U1 also discloses a textile element for use as a baby sling, which consists of at least 90% natural fibers and / or fibers made from natural fibers.

[0003] Firstly, the textile element according to DE 20 2016 104 745 U1 is limited to a textile element with a mesh structure. Secondly, the textile element is not made of bamboo viscose, but of natural fibers. According to a preferred embodiment in DE 20 2016 104 745 U1, these natural fibers can be bamboo fibers and / or coconut fibers.

[0004] However, the textile fabrics made from bamboo materials known in the prior art have the disadvantage that they cannot be washed at an elevated temperature of, for example, at least 60°C and / or are not suitable for tumble drying. Therefore, the possible uses of the textile fabrics made from bamboo materials known in the prior art are severely limited, as they lose their shape and shrink when washed at an elevated temperature of, for example, at least 60°C or in the dryer, meaning they are not reusable after a wash step at an elevated temperature of, for example, at least 60°C or a tumble dryer cycle. Furthermore, the textile fabrics made from bamboo materials known in the prior art are limited to single jersey textiles and textile elements with a mesh structure.

[0005] EP 1 679 394 A1 discloses a cellulose filament yarn made of bamboo. JP 2003-155646 A discloses a knitted fabric for underwear comprising a yarn made of bamboo viscose and an elastic fiber. DE 20 2006 019 805 U1 discloses a cut-resistant glove made of a textile material comprising cut-resistant fibers and bamboo fibers. CN 109463819 A discloses a knitted mask containing a highly elastic yarn.

[0006] It is an object of the present invention to overcome the disadvantages of the known prior art, in particular to provide a textile fabric with improved properties which is antibacterial, odor-binding, breathable, skin-friendly, heat- and cold-regulating, has a high moisture absorption and is both washable and suitable for tumble drying.

[0007] This problem is solved by the subject matter of the independent claims.

[0008] The above object is achieved according to the invention by providing a textile fabric, wherein the textile fabric comprises at least bamboo viscose or a bamboo viscose derivative and at least one additive, wherein the bamboo viscose or the bamboo viscose derivative has a mass fraction of at least 50 wt.% of the textile fabric, in particular of at least 60 wt.% of the textile fabric, and the at least one additive comprises a recycled polyester, wherein the recycled polyester has a mass fraction between 25 wt.% and 50 wt.% of the textile fabric.

[0009] It has been discovered that the use of bamboo viscose or a bamboo viscose derivative has beneficial effects on textiles, as bamboo viscose or a bamboo viscose derivative has antibacterial and disinfectant properties, is odor-binding, breathable, and skin-friendly, regulates heat and cold, and supports moisture absorption and release. Furthermore, the use of bamboo viscose or a bamboo viscose derivative in textiles is ecologically very beneficial, as bamboo cultivation is particularly sustainable and the production of bamboo viscose requires significantly less water than, for example, the production of viscose from other wood materials. Bamboo is the fastest-growing plant species in nature, and thus the bamboo viscose textile raw materials according to the invention can be produced significantly faster and in a more environmentally friendly way than conventional textile raw materials such as cotton.

[0010] The term "textile fabric" in the context of this invention is to be understood as a flat, usually two-dimensional, flexible material that has a wide range of uses, for example, in the clothing industry. A textile fabric is produced from one or more yarns by a manual or mechanical textile-forming technique such as warp knitting, weaving, or knitting. In the context of this invention, the term "textile fabric" refers analogously to a fabric, a textile, a textile element, or similar interchangeable terms for a textile fabric that are familiar to those skilled in the art. Particularly preferably, the term "textile fabric" in the context of this invention refers to viscose textiles made from bamboo pulp, such as bamboo viscose.

[0011] A "yarn" within the meaning of this invention can consist of fibers of plant origin (so-called natural plant fibers, including cotton, linen, coconut, jute), animal origin (so-called natural animal fibers, including wool, silk, angora, cashmere, horsehair), or chemical origin (man-made fibers made from natural polymers, such as viscose, cupro, modal, lyocell, acetate, or triacetate; or man-made fibers made from synthetic polymers, such as polyester, polyamide, polyacrylic, elastane, polypropylene, or polyurethane). Within the scope of the invention, "fibers" are understood to mean yarns, continuous filaments, cords, fiber tows (for example, for spun-pulling processes), uncrimped or crimped staple fibers, and industrially woven, knitted, braided, or twisted materials.

[0012] Yarns or threads can be obtained through the spinning process, in which fibers are first opened, cleaned, parallelized, drawn, and partially combed. The fibers are then fed to a spinning machine as a sliver, which then twists, elongates, and twists the spun fibers together to create a long thread of the desired fineness. The production of synthetic or near-natural fibers by extruding liquid plastic from nozzles is also called "spinning," with the latter being performed using melt, wet, or dry spinning.

[0013] For the purposes of this invention, the term "knitted" or "knitted textile fabric" refers to a textile or fabric that is or was produced using the knitting technique. Knitting is a joining process and refers to the use of knitting and stitch combinations, whereby different thread systems are connected to form loops. Therefore, the term "knitted fabric" is understood according to the invention to mean a textile fabric created by stitch formation. Knitting can be done mechanically, for example, using a weft-knitting machine or a linking machine. The term weft-knitted fabric refers to knitted fabrics made from a single yarn thread and are round or flat knitted products. The term warp-knitted fabric refers to knitted fabrics that use multiple threads, with a separate thread and needle being used for each loop.Knitted textiles have the particular advantage of being lightweight and highly breathable, making them particularly suitable for the production of jersey shirts, stockings, and nylon tights. Knitted textiles also include lace, curtain fabrics, plush, and velvet. A textile fabric according to the invention can be knitted using any knitting process familiar to the skilled person.

[0014] For the purposes of this invention, the term "woven" or "woven textile fabric" refers to a textile or fabric made from at least two threads or thread systems. These thread systems are referred to as the warp (lengthwise) and the weft (crosswise), which are interlaced during the weaving process. The pre-tensioned warp threads form the carrier into which the weft threads are successively drawn from one selvedge to the other across the entire weaving width. The weft thread always moves laterally at a 90° angle through the warp thread, creating the basic textile fabric structure, which is referred to in technical terms as a "weave." The weaving of a textile fabric according to the invention can be achieved using any weaving method familiar to the skilled person.

[0015] The term "viscose" in the context of this invention refers to synthetic fibers obtained from the sustainable raw material cellulose. Viscose is classified as near-natural synthetic fibers and, according to the invention, can also be referred to as "rayon staple fiber" or "regenerated cellulose fiber." Cellulose can be obtained from wood, cotton waste, or bamboo. According to the invention, viscose obtained from bamboo is used. The starting material for bamboo viscose is regenerated, i.e., recycled, bamboo cellulose. This starting material is then dissolved in various chemicals until a viscous, viscous mass is formed. This viscous, viscous mass is then pressed through nozzles into a dilute sulfuric acid solution using a dry or wet spinning process, forming long, thin, continuous filaments.Production processes for the manufacture of viscose are known to those skilled in the art, and the production of viscose as a starting material for the manufacture of a textile fabric according to the invention can be carried out using any production process familiar to the skilled person. Depending on the production process, different matte or glossy viscose qualities result, visually similar to cotton, wool, silk, or the like. Viscose fibers can be understood as synthetic cotton fibers, wool fibers, or silk fibers and also have comparable material properties. Viscose textiles, for example, have skin-friendly, soft, and comfortable wearing properties. Another characteristic of viscose is its extremely high absorbency. Viscose is used in a wide variety of areas of life, for example in the form of cleaning cloths, cotton swabs, tampons, packaging films, artificial casings, and paper for banknotes.Because viscose is extremely versatile, comfortable to wear, and easy to care for, it is also used in the production of everyday textiles, especially in the outerwear sector, for example in the production of sweaters, dresses, accessories, and sportswear.

[0016] For the purposes of this invention, the term "bamboo viscose" refers to viscose obtained from bamboo. The term "bamboo viscose derivative" refers to any derivatized bamboo viscose obtained by modifying a "bamboo viscose," for example, by conjugating additional components. Bamboo viscose derivatives can also be obtained by using additional or different detergents, by additional or different solubilization steps, or by additional or different separation process steps. Bamboo viscose derivatives also include chemically modified bamboo viscose fabrics. Such modifications include, but are not limited to, glycosylation, ubiquitination, lipid conjugation, sumoylation, methylation, and other post-translational modifications of a bamboo viscose known to those skilled in the art.

[0017] For the purposes of this invention, the terms "yarn count," "yarn thickness," or "denier" of a yarn, fiber, or filament refer to its linear mass. A high yarn count means a lower mass-to-length ratio. According to the invention, the yarn count can be measured in tex (tex), where one "tex" corresponds to one gram per 1,000 meters. Furthermore, a unit of "dtex" or "decitex" refers to 1 gram per 10,000 meters. A unit of "ktex" or "kilotex" refers to 1 kilogram per 1,000 meters. The count of a yarn can influence the appearance of a textile surface in such a way that a fine yarn can achieve a very uniform surface appearance, while a coarse yarn can achieve a more rustic character. Those skilled in the art are aware that old units for yarn count are still used in large parts of the textile industry, such as denier (den), metric number (Nm), and English number (Ne).Those skilled in the art will also know that the unit "den" corresponds to one gram per 9,000 meters. The unit "Nm" corresponds to one meter per gram of yarn. In contrast, the unit "Ne" corresponds to 840 yards per pound. According to the invention, the textile fabric comprises at least one additive in addition to bamboo viscose or a bamboo viscose derivative.

[0018] The term "at least one" in the context of this invention should be understood as at least one single substance, i.e., recycled polyester, or 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, or any number of substances. Thus, the term "at least one" additive in the context of this invention should be understood as, for example, at least one single additive, or 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, or any number of additives. Furthermore, the term "at least one" within the meaning of this invention encompasses any number of substances or additives, preferably evenly distributed. However, within the meaning of this invention, the term "at least one" is also intended to encompass any number of substances or additives that are unevenly distributed.

[0019] Non-limiting examples of the at least one additive in addition to the recycled polyester content of at least 25% by weight according to the invention include (i) cellulosic fibers such as cotton, rayon or linen; (ii) protein-containing fibers such as silk or wool; (iii) synthetic fibers such as polyester, recycled polyester, elastane, recycled cotton, polyamide, polypropylene, acrylic or nylon; (iv) plant fibers from jute, flax, ramie, coir, kapok, sisal, henequen, abaca or hemp.

[0020] Preferably, the at least one additive is selected from the group consisting of elastane, cotton, silk, fleece, wool, polyester, recycled cotton, recycled polyamide, polyamide, recycled polypropylene and polypropylene.

[0021] In a preferred embodiment, the yarn count of the yarn of the at least one additive is above 0.8 dtex, preferably 0.9 dtex to 300 dtex, particularly preferably 1.5 dtex to 250 dtex, most preferably 2 dtex to 200 dtex.

[0022] Recycled polyester, as used in this invention, refers to any polyester obtained from old polyester and / or PET material. The use of recycled polyester material has the particular advantage of being particularly environmentally friendly and CO2-neutral, as recycled polyester is primarily obtained from old, used PET bottles. The use of recycled polyester is particularly preferred because, on the one hand, it significantly reduces waste. Furthermore, recycled polyester offers immense potential for energy savings: It has been shown that, compared to the production of conventional cotton or the production of new polyester, a percentage saving of 40% to 85% of the energy used is possible.In addition, there is a potential saving of up to 90% of the water required for the production of recycled polyester compared to the water required for the initial production of polyester.

[0023] In a further preferred embodiment, the recycled polyester is produced by a process comprising the following steps: i) Providing PET bottles, wherein the PET bottles are preferably old, used PET bottles; ii) Sorting the provided PET bottles, for example into different color shades; iii) Crushing the sorted, provided PET bottles; iv) Granulating the crushed, sorted PET bottle material into flakes and / or granules, and v) Cleaning the granulated, crushed, sorted PET bottle material, wherein the cleaning is carried out, for example, by melt filtration.

[0024] According to the invention, the recycled polyester can then be further processed into a textile.

[0025] A further development of the invention then relates to a recycled polyester which is produced by a process comprising the following steps: i) Providing PET bottles, wherein the PET bottles are preferably old, used PET bottles; ii) Sorting the provided PET bottles, for example into different color shades; iii) Crushing the sorted, provided PET bottles; iv) Splitting the individual molecules of the crushed, sorted PET bottle material using a solvent, wherein the solvent is preferably selected from the group consisting of water, methanol and glycol, and v) Cleaning the split, crushed, sorted PET bottle material, wherein the cleaning is carried out, for example, by melt filtration.

[0026] The individual polyester molecules split in this way can be used as building blocks for the production of new products, such as new textiles.

[0027] In a particularly preferred embodiment, the composition comprising bamboo viscose or a bamboo viscose derivative and at least one additive is used as a yarn for a textile fabric.

[0028] In a preferred embodiment, the textile fabric according to the invention comprises at least bamboo viscose or a bamboo viscose derivative and a recycled polyester, wherein the recycled polyester has a mass fraction between 25 wt.% and 45 wt.% of the textile fabric, in particular between 30 wt.% and 40 wt.% of the textile fabric or about 35 wt.% of the textile fabric.

[0029] There is fundamentally a conflict of interest between, on the one hand, the desire to provide a textile fabric that is antibacterial, odor-binding, breathable and skin-friendly, has a heat and cold-regulating effect and supports moisture absorption and release, and, on the other hand, the desire to provide a textile fabric that is washable and suitable for tumble drying at an elevated temperature of, for example, at least 60°C.

[0030] A composition comprising bamboo viscose or a bamboo viscose derivative and a recycled polyester for use as yarn for a textile fabric is according to the invention, since this composition has shown particularly surprising and advantageous effects. It has been found that the use of a recycled polyester in a textile fabric according to the invention in a mass fraction between 25 wt.% and 45 wt.% of the textile fabric, in particular between 30 wt.% and 40 wt.% of the textile fabric or about 35 wt.% of the textile fabric, enables the textile fabrics produced to be washable and suitable for tumble drying at an elevated temperature of, for example, at least 60°C. The addition of such a proportion of recycled polyester in the textile fabric (up to 45 wt.% of the textile fabric, preferably up to 35 wt.Furthermore, the addition of a recycled polyester content (at least 25% by weight, preferably about 35% by weight) does not reduce the beneficial effects that bamboo viscose or a bamboo viscose derivative has on a textile, such as antibacterial activity, breathability, skin compatibility, heat and cold regulating effects, and support for moisture absorption and release. However, the addition of a sufficiently high proportion of recycled polyester to the textile (at least 25% by weight, preferably about 35% by weight) surprisingly solves the problem of bamboo textiles known in the prior art, namely that they shrink during a washing step at an elevated temperature of, for example, at least 60°C or during a dryer cycle, and are therefore not reusable.

[0031] The measures according to the invention, namely the admixture of a sufficiently high proportion of recycled polyester to the bamboo viscose in the textile fabrics, thus overcome the disadvantages of the prior art, since a textile fabric according to the invention comprising bamboo viscose or a bamboo viscose derivative and a recycled polyester, wherein the recycled polyester has a mass fraction of between 25 wt.% and 45 wt.% of the textile fabric, in particular between 30 wt.% and 40 wt.% of the textile fabric or approximately 35 wt.% of the textile fabric, is washable and suitable for tumble drying at an elevated temperature of, for example, at least 60°C and is nevertheless antibacterial, odor-binding, breathable and skin-friendly, has a heat and cold regulating effect and supports the absorption and release of moisture by the textile fabric.

[0032] According to the invention, a composition of bamboo viscose and recycled polyester is particularly preferred, the composition comprising approximately 65% ​​by weight of bamboo viscose and approximately 35% by weight of recycled polyester, since it has surprisingly been found that textile fabrics consisting of approximately 65% ​​by weight of bamboo viscose and approximately 35% by weight of recycled polyester do not lose their shape or shrink when washed at an elevated temperature of, for example, at least 60°C or in a dryer, so that they remain unchanged and are therefore reusable after a washing step at an elevated temperature of, for example, at least 60°C or a dryer run. Therefore, a textile fabric consisting of approximately 65% ​​by weight of bamboo viscose and approximately 35% by weight of recycled polyester is particularly preferred. This textile fabric is characterized in that it is washable at a temperature of at least 40°C, in particular of at least 60°C, and is suitable for tumble drying.

[0033] The recycled polyester content used in the fabric contributes to its strength and durability, which is particularly suitable for industrial laundry. Furthermore, recycled polyester is environmentally friendly and differs from the polyester used in microfiber fabrics in its yarn count.

[0034] In a preferred embodiment, the yarn count of the bamboo viscose yarn corresponds to approximately 10 to 300 dtex, preferably 50 to 250 dtex, particularly preferably 100 to 200 dtex, most preferably 140 to 160 dtex, or approximately 150 dtex. In a further preferred embodiment, the yarn count of the yarn of the at least one additive corresponds to approximately 0.9 to 300 dtex, preferably 1.5 to 250 dtex, particularly preferably 2.0 to 200 dtex.

[0035] In a further embodiment, the yarn count of the bamboo viscose yarn corresponds to about 10 to 300 dtex, preferably 50 to 250 dtex, more preferably 100 to 200 dtex, most preferably 140 to 160 dtex or about 150 dtex, and the yarn count of the recycled polyester yarn corresponds to 0.9 dtex to 200 dtex, preferably 1.2 dtex to 150 dtex, more preferably 1.5 dtex to 100 dtex, more preferably 1.8 dtex to 85 dtex, or about 83 dtex.

[0036] In a further preferred embodiment, the yarn count of the bamboo viscose yarn corresponds to about 10 to 300 dtex, preferably 50 to 250 dtex, particularly preferably 100 to 200 dtex, very particularly preferably 140 to 160 dtex or about 150 dtex, and the yarn count of the recycled polyester yarn corresponds to 0.9 dtex to 200 dtex, preferably 1.2 dtex to 150 dtex, more preferably 1.5 dtex to 100 dtex, particularly preferably 1.8 dtex to 85 dtex, or about 2.0 to 2.2 dtex.

[0037] In one embodiment, the textile fabric according to the invention has a basis weight of 10 grams / m 2 to 500 grams / m 2 , preferably from 50 grams / m 2 to 400 grams / m 2 , particularly preferably from 100 grams / m 2 to 300 grams / m 2 , most particularly preferably from 150 grams / m 2 to 200 grams / m 2 . In a particularly preferred embodiment, the textile fabric according to the invention has a basis weight of 170 grams / m 2 .

[0038] In a further preferred embodiment, the textile fabric according to the invention comprising bamboo viscose and textured recycled polyester has a basis weight of 10 grams / m 2< to 500 grams / m 2< , preferably from 50 grams / m 2< to 400 grams / m 2< , particularly preferably from 100 grams / m 2< to 300 grams / m 2< , most particularly preferably from 150 grams / m 2< to 200 grams / m 2< . In a particularly preferred embodiment, the textile fabric according to the invention comprising bamboo viscose and textured recycled polyester has a basis weight of 170 grams / m 2< .

[0039] For the purposes of this invention, the term "approximately" is used to indicate a certain quantity tolerance. "Approximately" means ± 10.0%, or ± 5.0%, or ± 1.0%, or ± 0.5%, or ± 0.1%.

[0040] The textile fabric according to the invention can be any textile fabric familiar to the person skilled in the art. In an exemplary embodiment, the textile fabric according to the invention is selected from the group consisting of brocade, chambray, chenille, chiffon, chintz, corduroy, cretonne, damask, denim, flannel, gingham, jacquard, jersey, crepe, linen, lyocell, matelassé, modal, Oxford, percale, pique, poplin, pleated, ramie, rayon, velvet, satin, satinette, seersucker, knitwear, lace, curtains, terry cloth, twill, taffeta, tulle, tweed, voile, and woolsey.

[0041] In a further particularly preferred embodiment, the textile fabric according to the invention is a pique fabric, single jersey textile fabric, poplin textile fabric, twill textile fabric, or seersucker textile fabric.

[0042] Pique is a textile fabric with a small-scale, relief-like pattern, the surface of which is characterized by raised and depressed areas. Pique consists of two layers of fabric bonded together, creating a distinctive texture. This texture prevents the fabric from sticking to the skin and wrinkles less. Pique is one of the heavier and denser types of fabric. An example of a garment made from pique is the polo shirt.

[0043] Compared to the "Single Jersey" weave, already known for bamboo materials in the underwear sector, the "Pique" manufacturing technique is more suitable for outerwear, especially for sports applications, because the "Pique" manufacturing technique has a very light, cool feel while being highly robust against external stress.

[0044] In an exemplary embodiment, the textile fabric according to the invention is a warp-knitted, woven, or knitted textile fabric, in particular a two-fiber warp-knitted, woven, or knitted textile fabric. The textile fabric is, for example, a two-fiber warp-knitted pique textile fabric or a two-fiber warp-knitted single jersey textile fabric.

[0045] Particularly preferably, the textile fabric according to the invention is a two-fiber knitted pique textile fabric comprising about 65% bamboo viscose and about 35% recycled polyester or consisting of 65% bamboo viscose and 35% recycled polyester.

[0046] Particularly preferably, the textile fabric according to the invention is also a two-fiber knitted single jersey textile fabric comprising about 65% bamboo viscose and about 35% recycled polyester or consisting of 65% bamboo viscose and 35% recycled polyester.

[0047] Particularly preferably, the textile fabric according to the invention is also a two-fiber woven twill textile fabric comprising about 65% bamboo viscose and about 35% recycled polyester or consisting of 65% bamboo viscose and 35% recycled polyester.

[0048] Particularly preferably, the textile fabric according to the invention is a two-fiber knitted pique textile fabric comprising about 65% bamboo viscose and about 35% recycled polyester or consisting of 65% bamboo viscose and 35% recycled polyester.

[0049] Particularly preferably, the textile fabric according to the invention is also a two-fiber knitted single jersey textile fabric comprising about 65% bamboo viscose and about 35% recycled polyester or consisting of 65% bamboo viscose and 35% recycled polyester.

[0050] In a further preferred embodiment, the textile fabric according to the invention has no mesh structure.

[0051] In an exemplary embodiment of the invention, the textile fabric according to the invention is finished (so-called "finishing"), whereby the textile fabric is trimmed and adjusted. This finishing step particularly supports the provision of a textile fabric that is washable and / or suitable for tumble drying at an elevated temperature of, for example, at least 60°C.

[0052] In a further aspect of the invention, which can be combined with the preceding aspects and exemplary embodiments, a method for producing a textile fabric, in particular designed according to one of the preceding claims, is provided, characterized in that the pique knitting technique has been optimized particularly for the production of the textile fabrics according to the invention. The improved pique knitting technique enables the production of a two-fiber knitted pique textile fabric comprising, for example, 65% bamboo viscose and 35% recycled polyester.

[0053] According to a further aspect of the present invention, which can be combined with the preceding aspects and exemplary embodiments, the above object is achieved in a further aspect by providing the use of a textile fabric according to the invention for producing a garment and / or a mask.

[0054] The inventive use of a textile fabric for a garment and / or a mask made of at least bamboo viscose or a bamboo viscose derivative and at least one additive according to the invention provides a garment and / or a mask, wherein the garment and / or the mask has an antibacterial, odor-binding, breathable, skin-friendly, heat- and cold-regulating effect, has a high moisture absorption and release and is both washable and suitable for tumble drying.

[0055] A further preferred aspect of the present invention, which can be combined with the preceding aspects and exemplary embodiments, then relates to a garment which is characterized in that the material of the garment is a textile fabric according to the invention.

[0056] In a further preferred embodiment, the garment is characterized in that the inner side of the garment, which faces the body of the wearer, is made of bamboo viscose or a bamboo viscose derivative, and the outer side of the garment, which faces away from the body of the wearer, is woven, knitted, or warp-knitted from the at least one additive. In this preferred embodiment, the inner side of the garment, which faces the body of the wearer, exhibits the advantageous effects of bamboo viscose, in particular the antibacterial, odor-binding, breathable, skin-compatible, heat-, cold-, and moisture-regulating effects.

[0057] Preferably, the textile fabrics for the garments according to the invention are uniformly woven, knitted or crocheted with two fibers, wherein the bamboo viscose yarn is used for the inside of the garments, since the bamboo viscose has an antibacterial, odor-binding, breathable, skin-friendly, heat- and cold-regulating effect and has a high moisture absorption and release, and wherein the yarn comprising the at least one additive, including the recycled polyester yarn, is used for the outside of the garments.

[0058] A particularly preferred embodiment relates to a garment characterized in that the garment is washable at a temperature of at least 40°C, in particular at least 60°C, and suitable for tumble drying. The measures according to the invention therefore make the garment reusable.

[0059] Particularly preferably, the garment comprising the textile fabric according to the invention is workwear, everyday wear, or medical wear, in particular outerwear, such as a sweater, a shirt, a polo shirt, a T-shirt, a blouse, a top, a dress, a sports top, trousers, a sports bottom, and / or an accessory. In a further preferred embodiment, the garment comprising the textile fabric according to the invention is a polo shirt made of pique.

[0060] According to a further aspect of the present invention, which can be combined with the preceding aspects and exemplary embodiments, the above object is achieved in a further aspect by providing a mask, characterized in that the material of the mask is a textile fabric according to the invention, wherein the mask is preferably a face mask.

[0061] For the purposes of this invention, the term "mask" refers to a face mask, a protective mask with mouth and nose protection for protection against viral and / or bacterial infections, a respiratory mask, or similar types of masks familiar to those skilled in the art. The mask according to the invention preferably serves as mouth and nose protection.

[0062] In a further preferred embodiment, the mask comprises at least one mask body (10) and at least one elastically stretchable retaining strap (50), wherein the mask body (10) is suitable for covering the nose and mouth of a mask wearer, and wherein the at least one elastically stretchable retaining strap (50) is fastened (60) to a seam (20) of the mask on the inside and is suitable for pulling the mask body (10) against the face of the mask wearer, and wherein the mask body (10) comprises a nose bridge (30) and at least one, preferably two, sewn-over areas (40) on the outside of the mask body and at least one sewn-over area (70) on the inside of the mask body, characterized in that the mask body (10) is two- or three-layered, wherein the material in each of the two or three layers is a textile fabric according to the invention, preferably wherein the at least one additive of the textile fabric is identical in each of the two or three layers,wherein each of the two or three layers has identical dimensions, and wherein each of the two or three layers has been superimposed and sewn according to its identical dimensions.

[0063] To secure the mask, the at least one elastically stretchable retaining strap (50) is placed around the ears of the mask wearer such that the nose and mouth of the mask wearer are covered by the mask body (10). A mask according to the invention is particularly preferred in which the at least one elastically stretchable retaining strap (50) is not made of the material of the mask body (10), but is a rubber band. The nose clip (30) is suitable for securing the mask body (10) to the nose of the mask wearer, preventing the mask from slipping while worn.

[0064] The at least one, preferably two, sewn-over regions on the outside of the mask body (40) and the at least one sewn-over region on the inside of the mask body (70) are suitable for providing the mask body with the property of upward and downward flexibility, which increases the wearing comfort of the mask according to the invention. The at least one, preferably two, sewn-over regions on the outside of the mask body (40) and the at least one sewn-over region on the inside of the mask body (70) are particularly suitable for facilitating breathing while wearing a mask according to the invention.

[0065] Particularly preferred is a mask which is provided with at least one additional extension consisting of an elastically stretchable retaining strap (80) with at least one fastener (90), wherein the at least one additional extension consisting of an elastically stretchable retaining strap (80) with at least one fastener (90) enables the mask to be fixed to the back of the mask wearer's head by the at least one fastener (90). In the second alternative wearing form, the at least one extension consisting of an elastically stretchable retaining strap (80) with at least one fastener (90) is passed through the at least one elastically stretchable retaining strap (50), which is fastened to the mask and is suitable for pulling the mask body (10) against the face of the mask wearer, and is closed by the at least one fastener (90).In the alternative wearing method 2, the nose and mouth of the mask wearer are covered with the mask body (10) by fastening the mask body (10) by the at least one extension of an elastically stretchable retaining band (80), which is placed through the at least one elastically stretchable retaining band (50) attached to the mask and is closed and fixed at the back of the mask wearer's head by the at least one fastener (90).

[0066] Particularly preferred is a mask whose at least one elastically stretchable retaining band (50) and whose at least one extension consisting of an elastically stretchable retaining band (80) with at least one closure (90) is not made of the material of the mask body (10), but whose at least one elastically stretchable retaining band (50) and whose at least one extension consisting of an elastically stretchable retaining band (80) is a rubber band.

[0067] A mask with at least two elastically stretchable retaining straps (50, 80) is therefore preferred. The measures according to the invention enable the provision of a mask that not only has an antibacterial and disinfectant effect, is odor-binding, breathable, and skin-friendly, regulates heat and cold, supports moisture absorption and release, is washable at an elevated temperature of, for example, at least 60°C and suitable for tumble drying, but is also easy to put on and comfortable for the wearer.

[0068] In a particularly preferred embodiment, the mask is characterized in that the inner side of the mask, which faces the nose and mouth of the wearer, is woven, warp-knitted, or knitted from bamboo viscose or a bamboo viscose derivative, and that the outer side of the mask, which faces away from the nose and mouth of the wearer, is woven, warp-knitted, or knitted from the at least one additive. The inner side of the mask, which faces the nose and mouth of the wearer, therefore exhibits the beneficial effects of bamboo viscose, in particular its antibacterial, odor-binding, breathable, skin-compatible, heat-, cold-, and moisture-regulating properties.

[0069] Preferably, the textile fabrics for the masks according to the invention are woven, knitted, or warp-knitted in a uniform two-fiber manner, with the bamboo-viscose yarn being used for the inside of a layer of a mask, and the yarn comprising the at least one additive, for example, the recycled polyester yarn, being used for the outside of this layer. In a preferred embodiment, a mask according to the invention consists of two or three identical layers, each of the two or three layers having identical dimensions, and each of the two or three layers being superimposed and sewn according to their identical dimensions.In this case, the two or three layers are particularly preferably placed on top of one another and sewn together in such a way that the inside of the mask, which faces the nose and mouth of the mask wearer, is woven, warp-knitted or knitted from bamboo viscose or a bamboo viscose derivative, since the bamboo viscose has an antibacterial, odor-binding, breathable, skin-friendly, heat and cold regulating effect and has a high moisture absorption and release, and that the outside of the mask, which faces away from the nose and mouth of the mask wearer, is woven, warp-knitted or knitted from the at least one additive, according to the invention the recycled polyester yarn.

[0070] An exemplary refinement then relates to a mask that is washable up to at least 40°C, in particular up to at least 60°C, and suitable for tumble drying. The measures according to the invention therefore make the mask reusable.

[0071] By using a textile fabric for a garment and / or a mask made of at least bamboo viscose or a bamboo viscose derivative and at least one additive with recycled polyester, a garment and / or a mask can be provided which, on the one hand, is washable and suitable for tumble drying at an elevated temperature of, for example, at least 60°C and is easy to wear, and, on the other hand, can stop infections caused by bacteria and / or viruses, since the use of a bamboo viscose or a bamboo viscose derivative in a garment and / or a mask achieves an antibacterial, odor-binding, breathable, skin-friendly, heat and cold regulating effect, and also supports the moisture absorption and release of the garment and / or the mask.

[0072] According to a further aspect of the present invention, which can be combined with the preceding aspects and exemplary embodiments, the above object is achieved in a further aspect by providing a method for producing a garment and / or a mask designed in particular according to one of the preceding claims, wherein the method is characterized in that the method comprises the step of weaving or knitting an inner side of the garment and / or the mask from bamboo viscose or a bamboo viscose derivative, and the step of weaving or knitting an outer side of the garment and / or the mask from the at least one additive with recycled polyester.

[0073] Preferred embodiments are specified in the subclaims.

[0074] In the following, further properties, features and advantages of the invention will become clear by describing preferred embodiments of the invention with reference to the accompanying exemplary drawings and examples, in which: Figure 1: Schematic representation of the structure of an exemplary embodiment of a textile fabric according to the invention. Figure 2: Schematic representation of an exemplary embodiment of a mask according to the invention in an external view. Figure 3: Schematic representation of an exemplary embodiment of a mask according to the invention in an internal view. Figure 4: Schematic representation of an exemplary embodiment of a mask according to the invention with at least one additional extension made of an elastically stretchable retaining band (80) with at least one fastener (90) in an external view. Figure 5: Schematic representation of an exemplary embodiment of a mask according to the invention with at least one additional extension made of an elastically stretchable retaining band (80) with at least one fastener (90) in an internal view.Figure 6: Schematic representation of an exemplary embodiment of a mask according to the invention with at least one additional extension made of an elastically stretchable retaining band (80) with at least one fastener (90) in a side view (inside view), wherein the mask was closed with the aid of the enclosed at least one extension made of an elastically stretchable retaining band (80) with at least one fastener (90) at the back of the head of the mask wearer (not shown) by means of the at least one fastener (90).

[0075] Referring to Figure 1The structure of one embodiment of a textile fabric according to the invention is schematically shown, in which various stitches, e.g., a knit stitch (1), a skipped stitch (2), and / or a tuck stitch (3), are combined. The textile fabric according to the invention can be any textile fabric that has been knitted or crocheted using any combination of stitches, including a knit stitch (1), a skipped stitch (2), and / or a tuck stitch (3).

[0076] The machine for knitting a textile fabric according to the invention comprises at least one cylinder and a dial, the cylinder and dial being provided with needles, each separately driven by an electronic control mechanism. Several needles of the cylinder are driven such that each individual needle of the cylinder can be selected to knit either a knit stitch, a skipped stitch, and / or a tuck stitch, thus making it possible to produce a textile fabric with different textures and / or different colors.

[0077] In the embodiment of the Figure 1 Three different stitches, a knit stitch (1), a skipped stitch (2) and a tuck stitch (3), are knitted repeatedly in a predetermined course direction, whereby a row of stitches (System 1 to System 8) is produced by repeated knitting. Each system (System 1 to System 8) of the embodiment of the Figure 1 shows the needles of the dial at the top and the needles of the cylinder at the bottom.

[0078] The textile fabric according to the embodiment of the Figure 1 is provided by a method of knitting a textile fabric, comprising the steps of: i. Knitting of a system 1, wherein the needles of the dial repeatedly knit a right stitch (1) of a yarn comprising at least bamboo viscose and / or a bamboo viscose derivative, and wherein the needles of the cylinder repeatedly knit a skipped stitch (2) after each right stitch (1) knitted by needles of the dial; ii. Knitting of a system 2, wherein the needles of the dial repeatedly knit a tuck stitch (3) and a skipped stitch (2) of a yarn comprising at least one additive, according to the invention a recycled polyester, and wherein the needles of the cylinder repeatedly knit a right stitch (1) of a yarn comprising at least one additive, according to the invention with recycled polyester; iii.Knitting of a system 3, wherein the needles of the dial repeatedly knit a right stitch (1) of a yarn comprising at least bamboo viscose and / or a bamboo viscose derivative, and wherein the needles of the cylinder repeatedly knit a skipped stitch (2) after each right stitch (1) knitted by needles of the dial; iv. Knitting of a system 4, wherein the needles of the dial repeatedly knit a tuck stitch (3) and a skipped stitch (2) of a yarn comprising at least one additive, according to the invention with recycled polyester, and wherein the needles of the cylinder repeatedly knit a right stitch (1) of a yarn comprising at least one additive, according to the invention with recycled polyester; v.Knitting of a system 5, wherein the needles of the dial repeatedly knit a right stitch (1) of a yarn comprising at least bamboo viscose and / or a bamboo viscose derivative, and wherein the needles of the cylinder repeatedly knit a skipped stitch (2) after each right stitch (1) knitted by needles of the dial; vi. Knitting of a system 6, wherein the needles of the dial repeatedly knit a skipped stitch (2) and a tuck stitch (3) of a yarn comprising at least one additive, for example recycled polyester, and wherein the needles of the cylinder repeatedly knit a right stitch (1) of a yarn comprising at least one additive, according to the invention with recycled polyester; vii.Knitting of a system 7, wherein the needles of the dial repeatedly knit a right stitch (1) of a yarn comprising at least bamboo viscose and / or a bamboo viscose derivative, and wherein the needles of the cylinder repeatedly knit a skipped stitch (2) after each right stitch (1) knitted by needles of the dial, and viii. Knitting of a system 8, wherein the needles of the dial repeatedly knit a skipped stitch (2) and a tuck stitch (3) of a yarn comprising at least one additive, for example the recycled polyester, and wherein the needles of the cylinder repeatedly knit a right stitch (1) of a yarn comprising at least one additive, according to the invention with recycled polyester.

[0079] Particularly preferred is a textile fabric, wherein the textile fabric is produced by knitting the at least one bamboo viscose and / or the bamboo viscose derivative exclusively via the needles of systems 1, 3, 5 and 7, and wherein the textile fabric is produced by knitting the at least one additive, according to the invention the recycled polyester, exclusively via the needles of systems 2, 4, 6 and 8.

[0080] The flexible manufacturing option according to the invention enables the production of a textile fabric, wherein the textile fabric is characterized in that the inner side of the textile fabric, which faces the wearer's body, is knitted from bamboo viscose or a bamboo viscose derivative, and the outer side of the textile fabric, which faces away from the wearer's body, is knitted from the at least one additive. In a particularly preferred embodiment, the inner side of the textile fabric, which faces the wearer's body, thus exhibits the advantageous effects of bamboo viscose, in particular the antibacterial, odor-binding, breathable, skin-compatible, heat-, cold-, and moisture-regulating effects.

[0081] With reference to the Figures 2 to 6 Embodiments of a mask according to the invention are presented.

[0082] In the designs of the masks according to the Figures 2 to 3These are exemplary masks according to the invention, which are shown from the outside view ( Figure 2 ) and from the inside view ( Figure 3 ) are shown. With reference to Figure 2a mask according to the invention is shown from the outside, facing away from the nose and mouth of the mask wearer. The mask comprises at least one mask body (10) and at least one elastically stretchable retaining strap (50), wherein the mask body (10) is suitable for covering the nose and mouth of a mask wearer. The at least one elastically stretchable retaining strap (50) is attached to the mask and is suitable for pulling the mask body (10) against the face of the mask wearer. For this purpose, the at least one elastically stretchable retaining strap (50) is placed around the ears of the mask wearer in order to cover the nose and mouth of the mask wearer with the mask body (10). The mask body (10) comprises a nose clip (30) which is suitable for fixing the mask body (10) on the nose of the mask wearer.In addition, the mask body (10) comprises at least one, preferably two, sewn-over regions (40) on the outside, wherein this region(s) (40) are suitable for providing the mask body with a certain upward and downward flexibility, which increases the wearing comfort of the mask according to the invention. A mask according to is particularly preferred. Figure 2 , at least one elastically stretchable retaining band (50) of which is not made of the material of the mask body (10), but is a rubber band.

[0083] Referring to Figure 3A mask according to the invention is shown from the inside, facing the nose and mouth of the mask wearer. The mask comprises at least one mask body (10) and at least one elastically stretchable retaining strap (50), wherein the mask body (10) is suitable for covering the nose and mouth of a mask wearer. For this purpose, the at least one elastically stretchable retaining strap (50) is placed around the ears of the mask wearer. The at least one elastically stretchable retaining strap (50) is fastened (60) to the inside of the seam (20) of the mask. The mask body (10) comprises a nose clip (30), which is suitable for fixing the mask body (10) on the nose of the mask wearer. In addition, the mask body (10) comprises at least one sewn-over area (70) on the inside, wherein the area (70) is suitable for providing the mask body with a certain upward and downward flexibility, which increases the wearing comfort of the mask according to the invention.

[0084] A mask according to Figure 3 , at least one elastically stretchable retaining band (50) of which is not made of the material of the mask body (10), but at least one elastically stretchable retaining band (50) of which is a rubber band.

[0085] In the exemplary embodiments of masks according to the invention of Figures 4 to 6 For example, these are masks which are provided with at least one additional extension consisting of an elastically stretchable retaining band (80) with at least one fastener (90).

[0086] In its basic structure, the embodiment of the masks according to the invention is Figures 4 to 6 analogous to the designs of masks according to the invention of Figures 2 and 3 constructed or manufactured. In contrast to Figure 2 and 3 is the mask in the embodiments according to the Figures 4 to 6at least one additional extension consisting of an elastically stretchable retaining band (80) with at least one fastener (90) is included, which enables an alternative way of wearing the mask.

[0087] The advantage of the exemplary embodiment of a mask according to the invention according to the Figures 4 to 6 is in particular that the mask wearer has the choice between two different ways of wearing the mask. In a first alternative, the mask body (10), as in the embodiments of the Figures 2 and 3, cover the nose and mouth of the mask wearer by securing the mask body (10) around the ears of the mask wearer by fastening the at least one elastically stretchable retaining strap (50), which is fastened (60) to the inside of the seam (20) of the mask. In a second alternative, the mask can be fastened to the back of the mask wearer's head with the aid of the enclosed at least one extension consisting of an elastically stretchable retaining strap (80) with at least one fastener (90).

[0088] In the second alternative wearing form, the at least one extension consisting of an elastically stretchable retaining band (80) with at least one closure (90) is placed through the at least one elastically stretchable retaining band (50), which is attached to the mask and is suitable for pulling the mask body (10) against the face of the mask wearer, and is closed by the at least one closure (90). This allows the mask according to the invention to Figures 4 to 6in alternative wearing mode 2, with the aid of the enclosed at least one extension made of an elastically stretchable retaining strap (80) with at least one fastener (90), the mask can be closed at the back of the mask wearer's head by the at least one fastener (90). Thus, in this alternative wearing mode 2, the nose and mouth of the mask wearer are covered with the mask body (10) by the mask body (10) being fastened by the at least one extension made of an elastically stretchable retaining strap (80), which is passed through the at least one elastically stretchable retaining strap (50) attached to the mask, and is closed and fixed at the back of the mask wearer's head by the at least one fastener (90).

[0089] With reference to the Figure 6an exemplary embodiment of a mask according to the invention with at least one additional extension made of an elastically stretchable retaining band (80) with at least one closure (90) is shown in a side view, wherein the mask is closed by means of the enclosed at least one extension made of an elastically stretchable retaining band (80) with at least one closure (90) at the back of the head of the mask wearer by the at least one closure (90). Figure 6shows a mask according to the invention, which is placed around the mouth and nose of a mask wearer (not shown) and closed with at least one fastener (90) at the back of the mask wearer's head. For this purpose, the at least one extension consisting of an elastically stretchable retaining strap (80) with at least one fastener (90) is passed through the at least one elastically stretchable retaining strap (50), which is attached to the mask and is suitable for pulling the mask body (10) against the face of the mask wearer, and closed with the at least one fastener (90) at the back of the mask wearer's head.

[0090] Particularly preferred is a mask according to the Figures 4 to 6, whose at least one elastically stretchable retaining band (50) and whose at least one extension consisting of an elastically stretchable retaining band (80) with at least one fastener (90) is not made of the material of the mask body (10), but whose at least one elastically stretchable retaining band (50) and whose at least one extension consisting of an elastically stretchable retaining band (80) is a rubber band.

[0091] In the exemplary embodiments of masks according to the invention of Figures 2 to 6 For example, these are masks, the masks being characterized in that the mask body (10) is preferably two- or three-layered, the material in each of the two or three layers being a textile fabric according to the invention, and each of the two or three layers having identical dimensions, which have been placed on top of one another according to their identical dimensions and sewn by means of a seam (20).

[0092] In a preferred embodiment, the masks are according to the Figures 2 to 6 characterized in that the inside of the mask, which faces the nose and mouth of the mask wearer, is woven, knitted or crocheted from bamboo viscose or a bamboo viscose derivative, and that the outside of the mask, which faces away from the nose and mouth of the mask wearer, is woven, knitted or crocheted from the at least one additive.

[0093] Preferably, the textile fabrics for the masks according to the invention are uniformly knitted with two fibers, with the bamboo viscose yarn being used for the inside of a layer of the mask and the yarn comprising the at least one additive, for example, the recycled polyester yarn, being used for the outside of the layer. In a preferred embodiment, a mask according to the invention consists of two or three identical layers, each of the two or three layers having identical dimensions, and each of the two or three layers being superimposed and sewn according to their identical dimensions.In this case, the two or three layers are particularly preferably placed on top of one another and sewn together in such a way that the inside of the mask, which faces the nose and mouth of the mask wearer, is woven, warp-knitted or knitted from bamboo viscose or a bamboo viscose derivative, since the bamboo viscose has an antibacterial, odor-binding, breathable, skin-friendly, heat and cold regulating effect and has a high moisture absorption and release, and the outside of the mask, which faces away from the nose and mouth of the mask wearer, is woven, warp-knitted or knitted from the at least one additive, according to the invention the recycled polyester yarn.

[0094] The inventive use of a textile fabric for the production of a mask makes it possible to provide a mask which, on the one hand, is washable and suitable for tumble drying at an elevated temperature of, for example, at least 60°C and is easy to wear, and, on the other hand, can stop infections caused by bacteria and / or viruses, since the use of bamboo viscose or a bamboo viscose derivative for the production of a mask achieves an antibacterial, odor-binding, breathable, skin-friendly, heat and cold regulating effect in the mask, and also supports the moisture absorption and release of the mask. Examples Example 1: Investigation of the properties of a bamboo-viscose-recycled-polyester pique textile fabric according to the invention

[0095] In an exemplary embodiment, the bamboo-viscose-recycled-polyester pique fabric according to the invention is a two-layer textile (so-called "double-face" article) consisting of 65% bamboo viscose and 35% recycled polyester. The fabric consists, in particular, of single-knit bamboo viscose on one side and recycled polyester pique on the other. The connections are achieved by a tuck pattern on every other needle.

[0096] The properties of the bamboo viscose recycled polyester piqué fabric are summarized in Table 1 below: material Formation of lint or knots on textile surface Weight Color fastness to rubbing Color fastness to washing Stability to washing pH ISO 12945-2:2013 gr / m 2 ISO 105 X12:2003 ISO 105:C06 ISO 25077 ISO 3071: 2006 + / -5% dry wet Ne 40 / 1 100% Bamboo Ring Spun Yarn 3-4 170 4 3 4 Lengthwise -4% + 2% 6,5 75D / 36F textured recycled polyester Width-wise -4% + 2%

[0097] Those skilled in the art are aware that in many parts of the textile industry, in addition to the SI units "tex" / "detex" / "ktex" for the fineness of a yarn or filament, older units for yarn fineness are still used, such as the denier (den), metric number (Nm), and English number (Ne). Those skilled in the art are also aware that the unit "den" corresponds to one gram per 9,000 meters. The unit "Nm" corresponds to one meter per gram of yarn. In contrast, the unit "Ne" corresponds to 840 yards per English pound.

[0098] Thus, the skilled person is able to convert the units Ne into dtex, where, for example, 40 / 1 Ne corresponds to 148 dtex. Therefore, the skilled person can easily see from Table 1 that Ne 40 / 1 100% of a bamboo ring-spun yarn corresponds to a bamboo ring-spun yarn with a yarn count of 148 dtex. The skilled person also immediately and clearly sees from Table 1 that the textured recycled polyester according to the invention with the unit "75D / 36F" comprises 75 dtex per 36 yarns / filaments, so that the textured recycled polyester according to the invention has a yarn count of approximately 2.0833 dtex.

[0099] The skilled person will also note from Table 1 that the "weight," which is given in grams / m², corresponds to the basis weight of the textile fabric. The textile fabric according to the invention, comprising bamboo viscose and textured recycled polyester, therefore has a basis weight of 170 grams / m². Example 2: Investigation of the skin compatibility of Bamboo viscose containing textile fabrics

[0100] The skin compatibility of an exemplary textile fabric according to the invention comprising 95% bamboo viscose and 5% elastane (270 g / m 2< ) was tested by means of an effect-related investigation of the cell activity to exclude a cell-damaging potential using the standardized method according to AW-QM-11.08.03.059: 2017-08 A< against L929 fibroblast cells in DMEM with 10% FCS as culture medium.

[0101] The extraction procedure was carried out by incubating the test substance with acidic sweat solution according to DIN EN ISO 105-E04 for at least 4 hours with gentle shaking at 37°C; the original sweat extract was adjusted to pH 7.3–7.4 and sterile filtered.

[0102] The cell culture was incubated for 24 hours with original sweat extract in two dilutions (80% and 40%).

[0103] Evaluation: After incubation of the cells, formazan formation was measured using the MTT test as a measure of viability and compared with the following controls: Solvent control: sweat solution (pH 7.3-7.4); positive control: 12% DMSO in sweat solution; negative control: culture medium.

[0104] The percentage vitality was calculated using the following formula:

[0105] Testing the percentage vitality allows the assessment of skin compatibility, with the controls showing the following vitality: Positive control: 2% vitality Negative control: 100% vitality Solvent control: 100% vitality

[0106] Assessment criteria: A determined vitality of over 70% compared to the solvent control indicates that the sample is non-toxic to cells. The exemplary textile fabrics according to the invention, comprising 95% bamboo viscose and 5% elastane, demonstrated a vitality of 100% at the 80% dilution level and a vitality of 98% at the 40% dilution level. Since the compatibility of a material is achieved when the cell vitality is over 70% compared to the solvent control, the compatibility of the exemplary textile fabrics according to the invention is ensured, so that the exemplary textile fabric according to the invention is considered skin-friendly. Example 3: Investigation of the sensitizing potential of Bamboo viscose containing textile fabrics

[0107] The sensitizing potential of the textile fabrics according to the invention comprising 95% bamboo viscose and 5% elastane (270 g / m 2< ) was determined using the ISO-standardized method according to AW-QM-11.08.03.068: 2017-09 A< in conjunction with DIN EN ISO 10993-12: 2012-10 and DIN EN ISO 105-E04: 2013-08 using a in vitro Screening tests against U937 histiocytes (immune cells) in RPMO with 25 mM HEPES, 2% L-glutamine and 10% FCS as culture medium.

[0108] The extraction procedure involved incubating the test substance with acidic sweat solution according to DIN EN ISO 105-Eo4 for 24 hours with gentle shaking at 37°C. The original sweat extract was adjusted to pH 7.3–7.4 and sterile filtered. The cell culture was incubated with the original sweat extract for 48 hours.

[0109] Analysis: The cells react to sensitizing substances by forming specific surface markers. Antibodies coupled with a fluorescent dye bind specifically to these surface markers. Flow cytometry is used to determine the percentage of cells labeled in this way. This yields the "relative fluorescence intensity" (RFI).

[0110] Controls: Solvent control: sweat solution (pH 7.3-7.4); positive control: 1 µg / ml DNCB in sweat solution; negative control: 0.2% DMSO in sweat solution.

[0111] The relative fluorescence intensity is calculated using the following formula:

[0112] For the purposes of this invention, the abbreviations RFI = Relative Fluorescence Intensity and MFI = Mean Fluorescence Intensity.

[0113] Sensitization testing allows the assessment of the potential risk of the substances being tested to trigger allergies.

[0114] Assessment criteria: Sensitizing substances stimulate U937 cells to form surface markers to which specific fluorescently labeled antibodies can bind. The percentage of positive cells is determined in the flow cytometer based on the fluorescence intensity. These values ​​form the basis for calculating the RFI according to the equation above. Samples with an RFI of 120% and higher are considered potentially sensitizing.

[0115] Under the specified conditions, the sweat extract of the textile fabrics according to the invention exhibits biological activity in this test. No sensitization potential of the exemplary textile fabrics according to the invention was detected (RFI < 120). Example 4: Investigation of the antibacterial effect of the textile fabrics according to the invention

[0116] The antibacterial activity of the textile fabrics according to the invention was determined using the ISO-standardized method according to DIN EN ISO 20743A:2013-12 against Staphylococcus aureus ATCC 6538 (supplied by DSMZ) and Klebsiella pneumoniae ATCC 4352 (supplied by DSMZ) using an absorption and plate counting method. Standard PES was used as a control material (comparison sample).

[0117] For this purpose, the textiles according to the invention were inoculated with a defined amount (3.01 x 105 CFU / ml) of a bacterial suspension (inoculum). The bacterial growth rate over 18 hours on the sample material was then calculated compared to the control material using the following formula: A = log 10 C 18 h − log 10 C 0 h − log 10 T 18 h − log 10 T 0 h and the equation log 10 C 0 = log 10 T 0. For the purposes of this invention, the abbreviations C = control material and T = sample material.

[0118] Assessment criteria according to DIN EN ISO 20743 A< :2013-12 are summarized in the following Table 2: Effectiveness of the antibacterial property Value of antibacterial effect A [log 10 CFU] no A < 2 significant 2 ≤ A < 3 strong A ≥ 3

[0119] The results concerning the antibacterial effect of the exemplary textile fabrics according to the invention against Staphylococcus aureus ATCC 6538 are summarized in the following Table 3: Test object mean Reduction value CFU absolute log 10 CFU log 10 CFU % (informative) Control / PES 1)< 0 h 5,02 x 10 4 3)< 4,70 - - 18 h 4,66 x 10 7 3)< 7,67 - - 18.8.3.0024-1 2)< 18 h 9,80 x 10 4 3)< 4,99 2,68 99,8 1) Control material (not antibacterially active) 2) Exemplary textile sample comprising 95% bamboo viscose and 5% elastane (270 g / m 2< ) 3) The CFU determination is carried out in triplicate; the mean value is given.

[0120] The results concerning the antibacterial effect of the exemplary textile fabrics according to the invention against Klebsiella pneumoniae ATCC 4352 are summarized in the following Table 4: Test object mean Reduction value CFU absolute log 10 CFU log 10 CFU % (informative) Control / PES 1)< 0 h 2,12 x 10 4 3)< 4,33 - - 18 h 1,79 x 10 8 3)< 8,25 - - 18.8.3.0024-1 2)< 18 h 3,41 x 10 6 3)< 6,53 1,72 98,1 1) Control material (not antibacterially active) 2) Exemplary textile sample comprising 95% bamboo viscose and 5% elastane, 270 g / m 2< 3) The CFU determination is carried out in triplicate; the mean value is given.

[0121] By evaluating the controls, it can be determined that the biological activity of the test strains and the results of the control experiments were satisfactory, so that the experimental procedure was valid.

[0122] As a result of the experiments, it can be summarized that the exemplary textile fabrics according to the invention have a significant antibacterial activity against the test strain Staphylococcus aureus ATCC 6538 used and no antibacterial activity against the test strain Klebsiella pneumoniae ATCC 4352 used.

[0123] The features disclosed in the above description, the figures and the claims may be important both individually and in any combination for the realization of the invention in the various embodiments. Example 5: Yarn weights of individual compositions according to the invention A. Two-sided textile fabric comprising bamboo viscose and recycled polyester

[0124] Viscose Bamboo 65%: 150 Dtex Recycled polyester 35%: 83 Dtex

[0125] The inventive two-sided textile fabric comprising bamboo viscose and recycled polyester is a two-sided knit with bamboo viscose on one side and pique polyester made of recycled polyester on the other. Both sides are connected by every other stitch. LIST OF REFERENCE SYMBOLS

[0126] 10:Mask body 20:Seam 30:Nose clip 40:Outer sewn area 50:Elastic stretchable retaining strap 60:Attachment of the elastic stretchable retaining strap to the inner seam 70:Inner sewn area 80:Extension made of elastic stretchable retaining strap 90:Fastener

Claims

1. A fabric, wherein the fabric comprises at least bamboo viscose or a bamboo viscose derivative having an antibacterial effect on Staphylococcus aureaus ATCC 6538 according to ISO standardized method and at least one additive, wherein the bamboo viscose or the bamboo viscose derivative has a mass fraction of at least 50% by weight of the fabric, characterized in that the at least one additive comprises a recycled polyester, wherein the recycled polyester has a mass fraction between 25% by weight and 50% by weight of the fabric.

2. The fabric according to claim 1, characterized in that the recycled polyester has a mass fraction between 25% by weight and 45% by weight of the fabric, in particular between 30% by weight and 40% by weight of the fabric or about 35% by weight of the fabric.

3. The fabric according to any one of claims 1 to 2, wherein the fabric is a pique fabric, single jersey fabric, popeline fabric, twill fabric, or seersucker fabric.

4. The fabric according to any one of claims 1 to 3, wherein the fabric is a warp-knitted, woven or knitted fabric, in particular wherein the fabric is a two-fiber warp-knitted, woven or knitted fabric, and / or wherein the at least one additive has a yarn fineness which is greater than 0.8 dtex.

5. The fabric according to any one of claims 1 to 4, wherein the fabric has no net structure, and / or wherein the fabric has an areic weight of 10 grams / m2 to 500 grams / m2.

6. Use of a fabric according to any one of claims 1 to 5 for producing a garment and / or a mask.

7. A garment, characterized in that the material of the garment is a fabric according to any one of claims 1 to 6.

8. The garment according to claim 7, characterized in that the inner side of the garment facing the body of the garment wearer has been woven, warp-knitted or knitted from bamboo viscose or a bamboo viscose derivative, and the outer side of the garment facing away from the body of the garment wearer has been woven, knitted or knitted from the at least one additive.

9. The garment according to claim 7 or 8, characterized in that the garment is washable at a temperature of at least 40°C, in particular of at least 60°C, and suitable for a dryer.

10. A mask, characterized in that the material of the mask is a fabric according to any one of claims 1 to 5, wherein the mask is preferably a face mask.

11. The mask according to claim 10, wherein the mask comprises at least one mask body (10) and at least one elastically stretchable holding strap (50), wherein the mask body (10) is suitable for covering the nose and mouth of a mask wearer, and wherein the at least one elastically stretchable holding strap (50) is internally attached (60) to a seam (20) of the mask and is suitable for pulling the mask body (10) against the face of the mask wearer, and wherein the mask body (10) comprises a nosepiece (30) and on the outer side at least one, preferably two, stitched-over areas (40) and on the inner side at least one stitched-over area (70), characterized in that the mask body (10) is two- or three-layered, wherein the material in each of the two or three layers is a fabric according to any one of claims 1 to 9, wherein each of the two or three layers has identical dimensions, and wherein each of the two or three layers has been superimposed and stitched according to their identical dimensions.

12. The mask according to claim 10 or 11, characterized in that the inner side of the mask facing the nose and mouth of the mask wearer has been woven, warp-knitted or knitted from bamboo viscose or a bamboo viscose derivative, and that the outer side of the mask facing away from the nose and mouth of the mask wearer has been woven, warp-knitted or knitted from the at least one additive.

13. The mask according to any one of claims 10 to 12, characterized in that the mask is washable up to at least 40°C, in particular up to 60°C, and suitable for a dryer.

14. A method for producing a fabric, wherein the method comprises producing the fabric from a plurality of yarns by a manual or machine textile-forming technique, wherein the fabric comprises at least bamboo viscose or a bamboo viscose derivative and at least one additive, wherein the bamboo viscose or the bamboo viscose derivative has a mass fraction of at least 50% by weight of the fabric, characterized in that the at least one additive comprises a recycled polyester, wherein the recycled polyester has a mass fraction between 25% by weight and 50% by weight of the fabric.

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