Water-soluble washing sheet and use thereof in cleaning a textile

Abstract

The present invention relates to a water-soluble washing sheet and its use in the cleaning of a textile, in particular sportswear or functional clothing.

Description

TECHNICAL AREA

[0001] The present invention relates to a water-soluble washing sheet. The present invention further relates to the use of the water-soluble washing sheet for cleaning textiles, in particular sportswear or functional clothing. BACKGROUND OF THE INVENTION

[0002] Traditional detergents, whether in liquid or powder form, have several disadvantages, such as the need for precise dosing, the risk of spills, and the potential environmental impact of packaging materials. These problems can lead to inefficient detergent use and unnecessary environmental pollution.

[0003] Water-soluble washing sheets are known from the prior art, for example from DE 10 2020 215 034 A1. These are thin, flexible sheets containing a precise amount of detergent that dissolve completely upon contact with water. This ensures easy and clean handling without leaving any residue or packaging waste. The washing sheet can be placed directly into the washing machine, where it dissolves quickly and distributes the detergent evenly.

[0004] Another advantage of water-soluble laundry sheets is their compact and lightweight form, which facilitates transport and storage. Compared to conventional detergents, they require less space and can be offered in more environmentally friendly packaging. Furthermore, precise dosing helps minimize detergent waste and reduce environmental impact.

[0005] Due to their special material composition and delicate structure, sportswear and functional clothing have specific cleaning requirements. Conventional detergents often cannot meet these requirements, as they either do not clean thoroughly enough or can damage the materials. The use of conventional fabric softeners is particularly problematic when cleaning sportswear and functional clothing.

[0006] The problem with using fabric softener on sportswear and performance clothing is that it can impair the special properties of these fabrics. Sportswear and performance clothing are often made from synthetic materials designed to wick away moisture, dry quickly, and offer high breathability. However, fabric softener can leave a thin film on the fibers that interferes with these properties. This can result in the clothing wicking moisture less effectively, drying more slowly, and being less breathable, which can significantly reduce comfort and performance. DESCRIPTION OF THE INVENTION Object of the invention

[0007] Therefore, starting from the prior art, the object of the present invention is to provide a water-soluble laundry sheet that overcomes the disadvantages of the prior art. In particular, it is the object of the present invention to provide a water-soluble laundry sheet that effectively acts as a fabric softener to achieve the softness of the textile cleaned with the water-soluble laundry sheet. Furthermore, it is the object of the present invention to provide a water-soluble laundry sheet that can be used as a fabric softener in the cleaning of sportswear and functional clothing without significantly reducing the comfort and performance of the clothing. Technical solution

[0008] This problem is solved according to the subject matter of the independent claims. Further embodiments will become apparent from the subject matter of the dependent claims and the following description of the invention.

[0009] This task is solved in particular by a water-soluble washing sheet, comprising a non-ionic surfactant; a triglyceride; and a hydrolyzed protein.

[0010] This problem is furthermore solved in particular by the use of the water-soluble washing sheet according to the invention in the cleaning of a textile, wherein the textile is a sportswear item or a functional garment. Technical effects

[0011] Surprisingly, the washing sheet according to the invention can be used when washing textiles to improve the buffering effect against sweat, the wearing comfort, and the elasticity of the washed textile. In particular, the washing sheet according to the invention can be used as a fabric softener, i.e., as a fabric softener sheet, when washing sportswear and functional clothing without impairing (or only to an acceptable extent) the described advantageous properties of the sportswear and functional clothing. DESCRIPTION OF THE FIGURES

[0012] Fig. 1 shows the microstructures of various textiles that were washed with and without the washing sheet according to the invention. DETAILED DESCRIPTION OF THE INVENTION

[0013] The terms and words used in this description and the claims should not be interpreted as being limited to ordinary or dictionary definitions. Rather, the terms and words used should be interpreted in a sense and concept consistent with the technical idea of ​​this disclosure, based on the principle that the inventor can correctly define the concept of a term in order to describe this invention in the best possible way.

[0014] Unless otherwise restricted, a detailed description defining or specifying the elements can be applied to all inventions and is not limited to descriptions of specific inventions. That is to say, the present disclosure also relates to combinations of embodiments, even if they are not disclosed separately.

[0015] The terminology used herein serves only to describe certain embodiments and is not intended to limit the invention. The singular forms "a," "an," and "the" include plural references unless the context clearly indicates otherwise. It is understood that terms such as "comprise" or "have" as used in this description are intended to denote the presence of specified features, numbers, steps, processes, components, parts, or combinations thereof, but are not intended to exclude the possibility of the presence or addition of one or more other features, numbers, steps, processes, components, parts, or combinations thereof. The term "comprise" expressly includes the meanings "essentially comprising" and "consists of," even if it is not necessarily limited accordingly.

[0016] The term "essentially comprising," as used herein, means "comprising at least 70%," preferably "comprising at least 80%," and most preferably "comprising at least 90%." When reference is made to the amount of a component in a material mixture, % means wt% based on the total weight of the mixture. For example, a material that substantially comprises a nonionic surfactant comprises the nonionic surfactant in an amount of at least 70 wt% based on the total weight of the material.

[0017] As used herein, "A and / or B" means "A and B or A or B". Water-soluble washing sheet

[0018] According to a first aspect, the present invention relates to a water-soluble washing sheet. The water-soluble washing sheet comprises a non-ionic surfactant, a triglyceride, and a hydrolyzed protein. In addition to the three components mentioned, which can be considered essential components, the water-soluble washing sheet may comprise one or more further components, in which case it may be provided that the water-soluble washing sheet consists of the non-ionic surfactant, the triglyceride, the hydrolyzed protein, and the one or more further components.

[0019] The water-soluble washing sheet can be a water-soluble detergent sheet and / or a water-soluble fabric softener sheet, preferably a water-soluble fabric softener sheet.

[0020] Detergents are used to clean textiles. Fabric softener is a laundry aid used to prevent the stiffness that occurs when laundry dries, thus making the washed textile softer.

[0021] It may be provided that the non-ionic surfactant is contained in the washing sheet in an amount of 1 to 5 wt.%, 1 to 4 wt.%, 1 to 3 wt.%, 1.5 to 2.5 wt.%, for example about 2 wt.%, in each case based on the total weight of the water-soluble washing sheet.

[0022] The nonionic surfactant may be a sugar surfactant. The nonionic surfactant may be an alkyl polyglycoside. The nonionic surfactant may be an alkyl polyglycoside comprising D-glucitol as the glycoside. The nonionic surfactant may be a methylglucamide. The nonionic surfactant may be sunflower oil-based. The nonionic surfactant may be a sunflower oil-based methylglucamide. The nonionic surfactant may be a D-glucitol, 1-deoxy-1-(methylamino)-, N-[C18-C18 (unsaturated) acyl] derivative. The non-ionic surfactant may be 1-deoxy-1-(methyl-(C18 and C18 (unsaturated))-alkanoyl)amino)-D-glucitol. The non-ionic surfactant may be, preferably substantially (for example, to at least 90 wt%), biodegradable.

[0023] It may be intended that the nonionic surfactant is used in a mixture with a solvent, such as a polyhydric alcohol, for example, propylene glycol. A corresponding commercially available mixture comprising 1-deoxy-1-(methyl-(C18 and C18 (unsaturated))-alkanoyl)amino)-D-glucitol as a nonionic surfactant and propylene glycol is GlucoPure® Sense from Clariant.

[0024] It may be provided that the triglyceride is contained in the washing sheet in an amount of 1 to 7 wt.%, 1 to 6 wt.%, 1 to 5 wt.%, 2 to 4 wt.%, 2.5 to 3.5 wt.%, for example about 2.9 wt.%, in each case based on the total weight of the water-soluble washing sheet.

[0025] Triglycerides are triple esters of the trihydric alcohol glycerol with three acid molecules, particularly carboxylic acid molecules. The triglyceride may be a tri(C5 to C12 carboxylic acid) glycerol ester. It may be a tri(C5 to C10 carboxylic acid) glycerol ester. It may be a tri(C5 to C10 carboxylic acid) glycerol ester. It may be a tri(C6 to C10 carboxylic acid) glycerol ester. It may be a tri(C6 to C9 carboxylic acid) glycerol ester. It may be a tri(C6 to C8 carboxylic acid) glycerol ester. It may be intended that the triglyceride is propane-1,2,3-triyl trisheptanoate (= a tri(C7 carboxylic acid) glycerol ester). A corresponding triglyceride, propane-1,2,3-triyl trisheptanoate, is commercially available under the name Coasphaderm®< Feel from Cosphatec.

[0026] It may be provided that the hydrolyzed protein is contained in the wash sheet in an amount of 0.1 to 5 wt%, 0.1 to 4 wt%, 0.1 to 3 wt%, 0.2 to 2 wt%, 0.4 to 1.5 wt%, 0.5 to 1.2 wt%, for example about 0.6 to 1.0 wt%, in each case based on the total weight of the water-soluble wash sheet.

[0027] It may be stipulated that the hydrolyzed protein is hydrolyzed wheat protein. It may be stipulated that the hydrolyzed protein is hydrolyzed wheat protein obtained from cultivated wheat grains.

[0028] It may be intended that the hydrolyzed protein (especially wheat protein) in aqueous solution or dispersion is used in the composition for producing the water-soluble wash sheet, for example, in an aqueous solution or dispersion containing 15 to 25 wt% hydrolyzed protein, based on the total weight of the aqueous solution or dispersion. An example of a commercially available aqueous solution or dispersion containing 15 to 25 wt% hydrolyzed wheat redein is Gluadin® WLM Benz from BASF.

[0029] It may be provided that the water-soluble washing sheet also contains a polyhydric alcohol.

[0030] It may be provided that the polyhydric alcohol is contained in the washing sheet in an amount of 10 to 20 wt.%, 12 to 18 wt.%, 13 to 17 wt.%, 14 to 16 wt.%, for example about 15 wt.%, in each case based on the total weight of the water-soluble washing sheet.

[0031] It may be provided that the polyhydric alcohol is a sugar alcohol. It may be provided that the sugar alcohol is a C3 to C6 sugar alcohol. It may be provided that the sugar alcohol is a C3 to C5 sugar alcohol. It may be provided that the sugar alcohol is a C3 to C4 sugar alcohol. It may be provided that the sugar alcohol is a C4 to C5 sugar alcohol. It may be provided that the polyhydric alcohol is erythritol (1,2,3,4,tetrahydroxybutane). It may be provided that the polyhydric alcohol is meso-erythritol. A corresponding meso-erythritol is commercially available under the name ERYLITE® Erythritol from Jungbunzler.

[0032] It may be provided that the water-soluble washing sheet also includes a water-soluble binder.

[0033] It may be provided that the water-soluble binder is contained in the washing sheet in an amount of 10 to 30 wt.%, 12 to 28 wt.%, 14 to 26 wt.%, 16 to 24 wt.%, 18 to 22 wt.%, 19 to 21 wt.%, for example about 20 wt.%, in each case based on the total weight of the water-soluble washing sheet.

[0034] The water-soluble binder may be polyvinyl alcohol. It may be provided that the water-soluble binder is polyvinyl alcohol with a degree of hydrolysis in the range of 80 to 95 mol%, in particular 86 to 89 mol%. It may be provided that the water-soluble binder is polyvinyl alcohol with a viscosity in the range of 21.0 to 26.0 mPa·s. It may be provided that the water-soluble binder is polyvinyl alcohol with a pH value in the range of 5.00 to 7.00. It may be provided that the water-soluble binder is polyvinyl alcohol with a volatile component content of not more than 5.00 wt%. It may be provided that the water-soluble binder is polyvinyl alcohol with an ash content of not more than 0.50 wt%. A suitable polyvinyl alcohol is commercially available in class BP17 from Chang Chun Chemical (Jiangsu) Co., Ltd.

[0035] It may be provided that the water-soluble washing sheet also includes another surfactant.

[0036] It may be provided that the additional surfactant is contained in the washing sheet in an amount of 20 to 50 wt.%, 30 to 40 wt.%, 32 to 39 wt.%, 34 to 38 wt.%, 35 to 37 wt.%, for example about 36 wt.%, in each case based on the total weight of the water-soluble washing sheet.

[0037] The additional surfactant may be an anionic surfactant. The additional surfactant may be a sulfonate. The additional surfactant may comprise a mixture of a first anionic surfactant and a second anionic surfactant, or a mixture of a first anionic surfactant and a second anionic surfactant.

[0038] The first anionic surfactant may contain a carboxylic acid group and / or a sulfonic acid group. It may contain a carboxylic acid group and a sulfonic acid group. It may contain exactly one carboxylic acid group and exactly one sulfonic acid group. The first anionic surfactant may comprise a C12 to C22 hydrocarbon group to which (preferably exactly) one carboxylic acid group and (preferably exactly) one sulfonic acid group are bonded. The first anionic surfactant may contain a 2-subsulfur fatty acid (C6 to C22). The first anionic surfactant may contain a 2-subsulfur fatty acid (C6 to C18). It may be provided that the first anionic surfactant contains a 2-suflo fatty acid (C 8 to C 14 ).The first anionic surfactant may contain a 2-sulfo fatty acid (C10 to C14). Alternatively, the first anionic surfactant may comprise 2-sulfolaurate. In all cases, the first anionic surfactant comprises counterions to balance the negative charges, preferably sodium ions. Preferably, the first anionic surfactant is disodium 2-sulfolaurate. A suitable first anionic surfactant is, for example, Texapon® SFA from BASF.

[0039] The second anionic surfactant may contain a sulfonic acid group. The second anionic surfactant may contain a C6 to C22 sulfonate. The second anionic surfactant may contain a C8 to C18 sulfonate. The second anionic surfactant may contain a C12 to C18 sulfonate. The second anionic surfactant may contain a C14 to C16 sulfonate. The second anionic surfactant may contain a C6 to C22 olefin sulfonate. The second anionic surfactant may contain a C8 to C18 olefin sulfonate. The second anionic surfactant may contain a C12 to C18 olefin sulfonate. The second anionic surfactant may contain a C14 to C16 olefin sulfonate. In all cases, the first anionic surfactant comprises counterions to balance the negative charges, preferably sodium ions.A corresponding sodium C 14 to C 16 olefin sulfonate is, for example, commercially available from Hunan Resun Auway Industrial Co., Ltd.

[0040] It may be provided that the further surfactant consists of the first anionic surfactant and the second anionic surfactant, whereby it may be provided that the first anionic surfactant and the second anionic surfactant are present in a weight ratio of 10:1 to 1:1, 8:1 to 2:1, 7:1 to 3:1, 6:1 to 4:1, for example about 5:1.

[0041] It may be provided that the water-soluble washing sheet also includes a humectant.

[0042] It may be provided that the humectant is contained in the washing sheet in an amount of 2 to 10 wt.%, 3 to 9 wt.%, 3 to 8 wt.%, 4 to 7 wt.%, for example about 6 wt.%, in each case based on the total weight of the water-soluble washing sheet.

[0043] The humectant may be glycerin, sorbitol, or a mixture thereof. It may be specified that the humectant is glycerin.

[0044] It may be provided that the water-soluble washing sheet also includes a stabilizing agent.

[0045] It may be provided that the stabilizing agent is contained in the washing sheet in an amount of 0.05 to 1 wt.%, 0.1 to 0.8 wt.%, 0.15 to 0.6 wt.%, 0.2 to 0.4 wt.%, for example about 0.3 wt.%, in each case based on the total weight of the water-soluble washing sheet.

[0046] It may be stipulated that the stabilizing agent is sodium citrate.

[0047] It may be provided that the water-soluble washing sheet also includes a pH regulator.

[0048] It may be provided that the pH regulator is contained in the washing sheet in an amount of 0.05 to 1 wt.%, 0.1 to 0.8 wt.%, 0.15 to 0.6 wt.%, 0.2 to 0.4 wt.%, for example about 0.3 wt.%, in each case based on the total weight of the water-soluble washing sheet.

[0049] It may be intended that the pH regulator is citric acid.

[0050] It may be provided that the water-soluble washing sheet also contains a solvent.

[0051] It may be provided that the solvent is contained in the washing sheet in an amount of 5 to 20 wt.%, 5 to 15 wt.%, 7 to 13 wt.%, 8 to 12 wt.%, 9 to 11 wt.%, for example about 10 wt.%, in each case based on the total weight of the water-soluble washing sheet.

[0052] It may be specified that the solvent is a polar solvent. It may be specified that the solvent is water.

[0053] It may be provided that the water-soluble washing sheet contains a fragrance.

[0054] It may be provided that the fragrance is contained in the washing sheet in an amount of 0.1 to 3 wt.%, 1 to 2 wt.%, for example about 1.5 wt.%, in each case based on the total weight of the water-soluble washing sheet.

[0055] The fragrance may be a perfume oil and / or an encapsulated fragrance. A commercially available example of an encapsulated fragrance is Symcap BP Heaven. The fragrance may also be a mixture of a perfume oil and an encapsulated fragrance, with the perfume oil and the encapsulated fragrance present in a weight ratio of 3:1 to 1:1, for example, approximately 2:1.

[0056] It may be intended that the dissolved water-soluble washing sheet in a 1 wt% aqueous dilution has a pH value of 7 to 10. Using the washing sheet when cleaning a textile

[0057] According to a second aspect, the invention relates to the use of the water-soluble washing sheet according to the present invention in the cleaning of a textile. The use in cleaning the textile particularly includes the use of the water-soluble washing sheet as a detergent (i.e., as a water-soluble detergent sheet) or as a fabric softener (i.e., as a water-soluble fabric softener sheet).

[0058] The textile to be cleaned in accordance with the invention using the water-soluble washing sheet can in particular be a sportswear item or a functional clothing item.

[0059] Sportswear and functional clothing can be made from a combination of synthetic and / or natural textile materials. Synthetic materials include polyester, nylon, and elastane. Natural fibers include merino wool and cotton. When natural fibers are used in the production of sportswear and functional clothing, they can be enhanced with special coatings and / or membranes to ensure properties such as breathability, water and wind resistance, and elasticity. These garments are designed to offer the wearer optimal freedom of movement and comfort during athletic activities, and may incorporate additional functionalities such as UV protection and reflective elements.In other words, sports and functional clothing differs from other clothing primarily through its special material properties and its specific functionality, which is tailored to the needs of athletes and active people.

[0060] Sportswear and functional clothing can be made from synthetic materials, especially polyester, nylon, or elastane. These synthetic materials are lightweight, durable, and elastic. They offer greater freedom of movement and durability compared to traditional cotton or wool fabrics.

[0061] Fibers (both synthetic fibers, such as polyester, nylon or elastane) and (especially) natural fibers used to manufacture sportswear and functional clothing can be coated with one or more coating materials.

[0062] Suitable coating materials include, in particular: Polyurethanes (PU): Polyurethane coatings are frequently used to improve the waterproofness and breathability of textiles. They provide a flexible and durable layer that protects against moisture without impairing breathability.

[0063] Polytetrafluoroethylene (PTFE): PTFE, known under the brand name Gore-Tex®, is used to create waterproof, windproof, and breathable membranes. This coating allows perspiration to escape in the form of water vapor, while preventing water from penetrating from the outside.

[0064] Silicones: Silicone coatings are used to improve the water repellency and durability of textiles. They provide a smooth surface that repels water and dirt, while remaining flexible and durable.

[0065] Fluoropolymers: Fluoropolymers such as fluorocarbon coatings are used to improve the water- and dirt-repellent properties of textiles. These coatings are particularly effective at repelling water, oil, and other liquids.

[0066] Antimicrobial coatings: These coatings contain antimicrobial agents such as silver ions or zinc pyrithione, which inhibit the growth of odor-causing bacteria and fungi. This helps to maintain the freshness of clothing and reduce odors.

[0067] UV protection coatings: Some functional clothing features UV protection coatings that shield the skin from harmful ultraviolet rays. These coatings absorb or reflect UV rays, providing additional protection during outdoor activities.

[0068] Hydrophilic coatings: These coatings improve moisture absorption and wicking by transporting sweat away from the skin and distributing it across the fabric surface where it can evaporate more quickly. This helps keep the wearer dry and comfortable.

[0069] These coatings contribute significantly to optimizing the performance and functionality of sports and functional clothing, making it suitable for various applications and environments.

[0070] The advantageous properties of such sportswear and functional clothing are impaired and deteriorated by washing it using conventional fabric softener. Surprisingly, the washing sheet according to the invention can be used as a fabric softener when washing sportswear and functional clothing without impairing (or only to an acceptable extent) the described advantageous properties of the sportswear and functional clothing.

[0071] The use of the water-soluble washing sheet according to the invention can in particular be a method comprising the following steps: Providing the textile, in particular a sportswear item or a functional garment, together with a water-soluble washing sheet according to the invention in water or (preferably) an aqueous solution; and washing the textile together with the water-soluble washing sheet in the water or aqueous solution at a temperature of at least 20 °C for at least 10 minutes.

[0072] Preferably, the textile is a piece of clothing, such as a shirt, T-shirt, trousers, jacket, sweater, stocking, sock, etc.

[0073] Preferred embodiments described in connection with the water-soluble washing sheet according to the invention are also preferred embodiments with regard to the use according to the invention. DETAILED DESCRIPTION OF THE INVENTION

[0074] The invention will now be described in detail with reference to specific embodiments. This description serves primarily to illustrate the invention. Those skilled in the art will be aware that not all of the features mentioned in the exemplary embodiments are necessarily required for the realization of the invention. Rather, those skilled in the art will be aware that, if necessary, individual features mentioned in the exemplary embodiments, together with features listed in the general description of the invention, may also contribute to its realization. 1. Composition for producing a water-soluble washing sheet

[0075] A composition for producing a water-soluble washing sheet according to the present invention was prepared by intimately mixing the components listed in Table 1 as follows. Table 1: Components of the composition for producing a water-soluble washing sheet ingredient % by weight function Texapon® < SFA 30,00 First anionic surfactant Sodium C14-16 Olefin Sulfonate 6,00 Second anionic surfactant GLUCOPURE SENSE 4,00 Non-ionic surfactant Polyvinyl alcohol 20,00 Water-soluble binder Glycerin 6,00 Humectant ERYLITE PC (Personal Care) 15,00 polyol Cosphaderm® < Feel 2,90 Triglyceride Sodium Citrate 0,30 Stabilizing agent Citric Acid 0,30 pH regulator Water (demineralized) 10,00 solvent Gluadin® < WLM Benz 4,00 Hydrolyzed protein Perfume oil 1,00 Fragrance Symcap BP Heaven 0,50 Encapsulated fragrance

[0076] The powdered raw materials were weighed. PVA was dissolved in sufficient water on a 70°C hot stirring plate, stirring vigorously. Once the PVA was completely dissolved, all components—except the perfume oil and fragrance capsules—were added to the hot mixture and blended while continuing to stir vigorously. This resulted in a viscous slurry (" Slurry "), which was kept in motion accordingly. The mixture was allowed to cool while stirring. As soon as a temperature of below 60°C was reached, the perfume oil and the fragrance capsules were added to the hot mixture and blended / mixed while continuing to stir vigorously. 2. Making a water-soluble washing sheet (Example 1)

[0077] The water-soluble washing sheets were produced by drying on a ceramic hot plate, a horizontal drying belt, or a drying drum. For this purpose, a desired " Slurry The specified quantity / thickness / size was applied to one of the aforementioned drying media. Drying took place at 60°C for 15 minutes. The dried, water-soluble wash sheets were peeled from the drying media and cut to the desired size. 3. Microstructure of textiles after washing with and without the water-soluble washing sheet according to the invention

[0078] The microstructure of various textiles before and after cleaning using the water-soluble washing sheet according to the invention was analyzed by scanning electron microscopy (SEM) in comparison to textiles cleaned without using the water-soluble washing sheet.

[0079] Various textile samples were treated by washing at 40°C with different products. Textile samples:

[0080] 1. Wool 2. Terry cloth 3. T-shirt fabric 4. Sports textiles (polyester blend / Lycra blend) Washing products:

[0081] 1. Washed with standard detergent. 2. Washed with standard detergent + water-soluble detergent sheet (Example 1). 3. Washed with standard detergent and fabric softener. 4. Check (not washed). REM

[0082] Surface characterization was performed using SEM (Quanta 3D FEG, FEI) at various positions and appropriate magnifications. Prior to SEM examination, the samples were coated with an ultrathin carbon film to counteract electrical charging of the surface during the investigations.

[0083] The results obtained are in the Fig. 1 shown. Lines 11 to 14 in Fig. 1Columns 11 and 24 indicate the different textile samples (11: wool; 12: terry cloth; 13: T-shirt fabric; 14: sportswear). Columns 21 to 24 indicate the different washing products (21: washed with standard detergent; 22: washed with standard detergent + water-soluble detergent sheet (Example 1); 23: washed with standard detergent and fabric softener; 24: control (not washed)).

[0084] For the textile samples that were washed using the water-soluble detergent sheet according to the invention (column 22), a significant reduction in residues on the surface of the textile fibers could be observed compared to the textile samples that were washed without the water-soluble detergent sheet according to the invention.

[0085] The reduced build-up of residues achieved through the use of the water-soluble detergent sheet according to the invention leads to improved perspiration wicking, as the textile fibers are not clogged by residues. The reduced build-up of residues also leads to improved elasticity of the textile fibers and thus to improved wearing comfort. 4. Analysis of textile properties

[0086] Sports textiles (samples 1 to 4) were washed with various washing products and subsequently analyzed with regard to various textile properties. Washing products:

[0087] Sample 1: Washed with commercially available detergent. Sample 2: Washed with commercially available detergent + water-soluble detergent sheet (Example 1) (according to the invention). Sample 3: Washed with a commercially available detergent and a commercially available fabric softener. Sample 4: Control (not washed). 4.1 Measurement of water vapor resistance

[0088] Testing device: Thermoregulation model of human skin (skin model) Test conditions: according to DIN EN ISO 11092:2014-12 A< Test environment: 35°C; 40% RH Test objective: Average of 3 individual measurements at 3 different sections per sample.

[0089] The results obtained are shown in Table 2. Table 2: sample Water vapor resistance R et (m 2< Pa / W) 1 2,90 2 2,85 3 2,88 4 2,97 4.2 Buffering effect of liquid sweat - Buffer index K f (-) , Sweat absorption (g)

[0090] For the physiological behavior and wearing properties of textiles worn especially close to the skin, not only their stationary thermophysiological properties are crucial, but also their ability to buffer the increase in moisture in the microclimate close to the skin during perspiration impulses of the wearer during physical exertion and to maintain moisture and temperature at values ​​that enable subjective wearing comfort.

[0091] The buffer index Kf measures the wearing condition at which the wearer sweats so profusely that liquid perspiration appears on their skin. Assuming a specific climatic situation, the amount of liquid perspiration g that is transported away from the skin per m² per hour through the textile can be calculated. Testing device: Thermoregulation model of human skin (skin model) Test conditions: according to EN 18534:2022 A< Method A Test environment: 35°C; 30% RH Test objective: Average of 3 individual measurements at 3 different sections per sample

[0092] The results obtained are shown in Table 3. Table 3: sample Buffer characteristic K f Sweat absorption (g) 1 0,99 7,0 2 0,98 6,9 3 1,00 7,1 4 0,46 0,5

[0093] The data shown demonstrate that the use of the water-soluble wash sheet according to the invention results in an improved buffering effect against the increase in humidity in the microclimate close to the skin and an improved subjective wearing comfort.

[0094] The properties disclosed in the preceding description and the attached claims may, separately or in combination, be the subject of realizing the aspects of the disclosure made in the independent claims in different forms thereof.

Claims

1. A water-soluble washing sheet comprising - a non-ionic surfactant; - a triglyceride; and - a hydrolyzed protein.

2. The water-soluble washing sheet according to claim 1, wherein the non-ionic surfactant is contained in the washing sheet in an amount of 1 to 5% by weight, based on the total weight of the water-soluble washing sheet.

3. The water-soluble washing sheet according to claim 1 or 2, wherein the non-ionic surfactant is 1-Deoxy-1-(Methyl-(C18 and C18 (unsaturated))-Alkanoyl)Amino)-D-Glucitol.

4. The water-soluble washing sheet according to at least one of the preceding claims, wherein the water-soluble washing sheet further contains a polyhydric alcohol.

5. The water-soluble washing sheet according to claim 3, wherein the polyhydric alcohol is contained in the washing sheet in an amount of 10 to 20% by weight, based on the total weight of the water-soluble washing sheet.

6. The water-soluble washing sheet according to at least one of the preceding claims 4 or 5, wherein the polyhydric alcohol is erythritol.

7. The water-soluble washing sheet according to at least one of the preceding claims, wherein the triglyceride is contained in the washing sheet in an amount of 1 to 7% by weight, based on the total weight of the water-soluble washing sheet.

8. The water-soluble washing sheet according to at least one of the preceding claims, wherein the triglyceride is a Tri(C5 to C 12 Carboxylic acid) glycerol ester is.

9. The water-soluble washing sheet according to at least one of the preceding claims, wherein the triglyceride is propane-1,2,3-triyl trisheptanoate.

10. The water-soluble washing sheet according to at least one of the preceding claims, wherein the hydrolyzed protein is contained in the washing sheet in an amount of 0.1 to 5% by weight, based on the total weight of the water-soluble washing sheet.

11. The water-soluble washing sheet according to at least one of the preceding claims, wherein the hydrolyzed protein is hydrolyzed wheat protein.

12. The water-soluble washing sheet according to at least one of the preceding claims, wherein the water-soluble washing sheet further comprises a water-soluble binder.

13. The water-soluble washing sheet according to claim 12, wherein the water-soluble binder is polyvinyl alcohol.

14. The water-soluble washing sheet according to at least one of the preceding claims, wherein the water-soluble washing sheet is a water-soluble detergent sheet or a water-soluble fabric softener sheet, preferably a water-soluble fabric softener sheet.

15. Use of a water-soluble washing sheet according to at least one of the preceding claims for the cleaning of a textile, wherein the textile is a sportswear item or a functional clothing item.

Images