Water-soluble films and water-soluble unit-dose articles made therefrom

Abstract

To develop novel water-soluble film compositions and manufacturing processes that simultaneously address the solubility, processability, film-detergent composition compatibility, and mechanical properties required for effective and reliable use in laundry applications, while increasing the content of renewable resource-generating active substances in water-soluble films. [Solution] A water-soluble film and a unit-dose article made therefrom, wherein the water-soluble film comprises a water-soluble polymer, the water-soluble polymer comprises a blend of pectin and polyvinyl alcohol, the weight ratio of pectin to polyvinyl alcohol being 1:9 to less than 1:1.

Description

[Technical Field]

[0001] Water-soluble film and unit-dose articles made therefrom. [Background technology]

[0002] It is difficult to obtain a water-soluble film suitable for laundry applications, particularly liquid laundry formulations, that exhibits optimal solubility, excellent processability, and robust mechanical properties and strength, while also being compatible with the enclosed liquid laundry detergent composition. Water-soluble films are widely used in laundry applications, such as detergent unit-dose articles or pouches, providing convenient and precise dosages while eliminating the need to handle large quantities of detergent products.

[0003] International Publication No. 2021 / 127073(A1) discloses water-soluble films and unit-dose articles prepared therefrom. The water-soluble films include water-soluble polymers comprising a blend of caseinate polymer and polyvinyl alcohol homopolymer.

[0004] International Publication Nos. 202325655(A1) and International Publication Nos. 202325648(A1) relate to water-soluble films containing pectin and water-soluble capsules utilizing said films.

[0005] Existing water-soluble films often face challenges in simultaneously achieving the desired solubility, ease of manufacture, compatibility with liquid laundry detergent compositions, and the mechanical properties required to withstand harsh handling and transportation.

[0006] The specific challenges that need to be overcome are as follows:

[0007] Dissolution Performance: Existing water-soluble films for laundry applications may exhibit suboptimal dissolution characteristics. They may dissolve too slowly, leaving residues on the fabric or slowing down the washing process and impairing the effectiveness of the laundry products they contain. Alternatively, they may dissolve too quickly, posing a risk of premature rupture when accidentally exposed to water. Achieving an ideal dissolution profile is crucial to ensuring the effective and efficient delivery of laundry products during the washing process.

[0008] Compatibility with the encapsulated detergent composition: When a detergent composition is encapsulated in a water-soluble film, exchange of detergent active substances, particularly the solvent, may occur between the film and the encapsulated detergent composition. This can cause the film to become easily damaged during deplasticization or to become excessively flexible and sticky during overplasticization.

[0009] Processability: Water-soluble films must be processable using common manufacturing techniques such as extrusion or casting processes while maintaining consistent quality and uniformity. They should also be deformable under vacuum and / or thermal deformation processes. Challenges arise in obtaining water-soluble films that can be easily processed without impairing the film's solubility or structural integrity.

[0010] Mechanical Properties and Strength: Water-soluble films must possess sufficient mechanical properties and strength to withstand handling, packaging, transportation, and storage without tearing or breaking. Ensuring that the films exhibit sufficient tensile strength, flexibility, and resistance to abrasion and impact is crucial for maintaining their structural integrity throughout the product lifecycle.

[0011] There is also a need to reduce the amount of petrochemical-derived components in consumer goods and to rely more on active materials derived from renewable resources. [Prior art documents] [Patent Documents]

[0012] [Patent Document 1] International Publication No. 2021 / 127073(A1) [Patent Document 2] International Publication No. 202325655(A1) [Patent Document 3] International Publication No. 202325648(A1) [Overview of the project] [Problems that the invention aims to solve]

[0013] Finding solutions to these challenges is essential to meeting the growing demand for convenient and sustainable laundry products utilizing water-soluble films. This solution aims to develop novel water-soluble film compositions and manufacturing processes that simultaneously address the solubility, processability, film-detergent composition compatibility, and mechanical properties required for effective and reliable use in laundry applications, while increasing the content of renewable resource-recycling active substances in the water-soluble films. [Means for solving the problem]

[0014] A first aspect of the present invention is a water-soluble film comprising a water-soluble polymer, the water-soluble polymer comprising a blend of pectin and polyvinyl alcohol, the weight ratio of pectin to polyvinyl alcohol being 1:9 to less than 1:1, preferably 1:9 to 3:7. The film of the present invention exhibits good solubility, good compatibility with treatment compositions, and good mechanical properties, contributing to good processability in methods for producing laundry capsules, with an increased bio-derived content compared to conventional polyvinyl alcohol-based films.

[0015] Preferably, the polyvinyl alcohol has an average degree of hydrolysis of 75% to 100% and an average viscosity of 1 mPas to 30 mPas, and the viscosity is measured as a 4% aqueous solution in desalinated water at 20°C.

[0016] A second aspect of the present invention is a water-soluble unit-dose article comprising a water-soluble film according to the present invention, a treatment composition, and at least one internal compartment, wherein the treatment composition is contained within at least one compartment. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] [Figure 1] It is a water-soluble unit-dose article according to the present invention. DETAILED DESCRIPTION OF THE INVENTION

[0018] Water-soluble film A first aspect of the present invention is a water-soluble film. The water-soluble film contains a water-soluble polymer, and the water-soluble polymer contains a blend of pectin and polyvinyl alcohol. Pectin and polyvinyl alcohol will be described in more detail below.

[0019] The water-soluble film of the present invention is water-soluble. The water-soluble film preferably has a thickness of 30 μm to 150 μm, preferably 50 μm to 100 μm, and most preferably 60 μm to 85 μm.

[0020] Properties of the water-soluble film: The water-soluble film preferably has a dissolution time of less than 90 seconds, preferably less than 60 seconds, and more preferably less than 30 seconds at 10°C and a thickness of about 76 micrometers, as measured according to MonoSol Test Method 205 (MSTM 205), as described in U.S. Patent No. 7,022,656, column 8, lines 10-57. Preferably, the water-soluble film has a dissolution time of less than 120 seconds, preferably less than 90 seconds, more preferably less than 60 seconds, and even more preferably less than 30 seconds at 5°C and a thickness of about 76 micrometers, as measured according to MonoSol Test Method 205 (MSTM 205). Preferably, the disintegration time of the film at a thickness of about 76 microns is less than or equal to about 40 seconds or less, or less than or equal to about 33 seconds, as measured according to MonoSol Test Method 205 (MSTM 205), at a temperature of 10°C. More preferably, the disintegration time of the film at a thickness of approximately 76 microns is approximately 40 seconds or less, or approximately 30 seconds or less, at a temperature of 5°C, as measured according to MonoSol Test Method 205 (MSTM 205).

[0021] The film collapse time (I) and film dissolution time (S) may be corrected to a reference or standard film thickness (76 microns) using the exponential algorithms shown in Equations 1 and 2 below, respectively. Icorrected = Imeasured × (reference thickness) 2 / Measurement thickness 2 ) Scorrected = Smeasured × (Reference thickness) 2 / Measurement thickness 2 )

[0022] The polyvinyl alcohol is preferably selected from polyvinyl alcohol homopolymers, polyvinyl alcohol copolymers, or mixtures thereof. The polyvinyl alcohol homopolymers, polyvinyl alcohol copolymers, or mixtures thereof have an average degree of hydrolysis of 75% to 100%, preferably 80% to 95%, preferably 85% to 90%, when measured according to the standard method JIS K6726, and a viscosity of 1 mPas to 30 mPas, preferably 5 mPas to 25 mPas, preferably 10 mPas to 25 mPas, when measured as a 4% polymer solution in desalted water at 20°C using a Brookfield LV viscometer with a UL adapter, as described in British Standard EN ISO 15023-2:2006 Annex E Brookfield Test method, and in the case of anionic polyvinyl alcohol copolymers, they have an average degree of anionic substitution of 1% to 9%, preferably 1% to 5%, when measured by 1H-NMR. A general classification of anionic monomer units that can be used in anionic polyvinyl alcohol polymers includes vinyl monocarboxylate monomers, their esters and anhydrides, dicarboxylate monomers having polymerizable double bonds, their esters and anhydrides, vinyl sulfonic acid monomers, and alkali metal salts of any of the above, as well as vinyl polymerization units corresponding to mixtures thereof.Examples of suitable anionic monomer units include vinyl polymerization units corresponding to vinyl anionic monomers, such as vinyl acetic acid, maleic acid, monoalkyl maleic acid, dialkyl maleic acid, monomethyl maleic acid, dimethyl maleic acid, maleic anhydride, fumaric acid, monoalkyl fumaric acid, dialkyl fumaric acid, monomethyl fumaric acid, dimethyl fumarate, fumaric anhydride, itaconic acid, monomethyl itaconic acid, dimethyl itaconic acid, itaconic anhydride, vinyl sulfonic acid, allyl sulfonic acid, ethylene sulfonic acid, 2-acrylamido-1-methylpropanesulfonic acid, 2-acrylamido-2-methylpropanesulfonic acid, 2-methylacrylamido-2-methylpropanesulfonic acid, and 2-sulfoethyl acrylate (2-sufoethyl Examples include acrylate, alkali metal salts (e.g., sodium salt, potassium salt, or other alkali metal salt), esters (e.g., methyl, ethyl, or other C1-C4 or C6 alkyl esters), and combinations thereof (e.g., multiple types of anionic monomers, or equivalent forms of the same anionic monomer). Preferably, the anionic partial unit is selected from sulfonates, carboxylates, or mixtures thereof, more preferably carboxylates, most preferably acrylates, methacrylates, maleates, itaconates, or mixtures thereof. Preferably, the polyvinyl alcohol is selected from polyvinyl alcohol homopolymers consisting only of vinyl alcohol units and optionally vinyl acetate units, and therefore not containing anionic monomer units.

[0023] The water-soluble film preferably has a residue value of about 50% by weight or less, preferably about 45% by weight or less, more preferably about 40% by weight or less, or most preferably about 35% by weight or less, at 20°C with a film thickness of 76 micrometers as measured according to a dissolution chamber (DC) residue test, or 75% by weight or less, preferably about 70% by weight or less, more preferably about 60% by weight or less, or most preferably about 50% by weight or less, at 5°C. Generally, lower DC residue values ​​are desirable to reduce the possibility of residue film remaining on washed articles exposed to stressful washing conditions (e.g., low water conditions (e.g., washing machine overload) and cold wash water conditions). Such residues can be dissolved when further exposed to water, but this may require further effort from the user and is therefore undesirable.

[0024] Generally, a higher tensile strength value is desirable because it results in a tougher water-soluble unit-dose article. A higher e modulus is desirable from the viewpoint of providing water-soluble unit-dose articles that have higher rigidity and are less likely to deform and stick together when stacked and loaded with each other during manufacturing. Preferably, when measured at 23°C and 40%RH, the water-soluble film has a tensile strength or stress at break of at least 20 N / mm², preferably 20 N / mm² to 60 N / mm², more preferably 25 N / mm² to 60 N / mm², a modulus at 10% elongation of at least about 20 N / mm², and a modulus at 100% elongation of at least 12 N / mm². Furthermore, when measured according to the same method, the water-soluble film has a tensile strain at break of about 100% to about 1600%, preferably 300% to 1200%, more preferably about 400% to about 800%. Furthermore, the water-soluble film preferably has an elongation of about 1 MPa to about 20 MPa, preferably about 1 to about 15 MPa, when measured according to the same method. When measured at 100°C and 40% RH, the water-soluble film has a tensile strain at break of at least about 100%, when measured according to the same method.

[0025] Preferably, the water-soluble film and / or water-soluble polymer resin and / or individual water-soluble polymers have a biodegradation rate of at least 60%, preferably at least 65%, more preferably at least 70% after 60 days, or at least 60%, preferably at least 65%, more preferably at least 70% after 28 days, according to the OECD 301B test.

[0026] Preferably, the water-soluble film has a glass transition temperature of less than -5°C and a melting transition temperature of more than 80°C, as measured by the DSC standard procedure.

[0027] A negative film swelling value may result in a brittle film during product aging, while a film swelling value exceeding 15% may make the entire unit-dose article flexible during aging, and therefore aesthetically unattractive. Preferably, the film swelling value is 3% to 15%, more preferably 5% to 15%.

[0028] Preferably, the weight ratio of pectin to polyvinyl alcohol is 1:9 to less than 1:1, preferably 1:9 to 3:7. Preferably, the weight percentage of pectin to polyvinyl alcohol totals 100% by weight of the polymer resin in the water-soluble film. Those skilled in the art will understand how to prepare the polymer resin and each individual polyvinyl alcohol and pectin polymer.

[0029] The water-soluble polymer may be present in the film at a concentration of 50% to 95% by weight, preferably 55% to 90% by weight, and more preferably 60% to 80% by weight.

[0030] Preferably, the water-soluble film contains a non-aqueous plasticizer. Preferably, the non-aqueous plasticizer is selected from polyols, sugar alcohols, and mixtures thereof. Suitable polyols include polyols selected from the group consisting of glycerol, diglycerin, ethylene glycol, diethylene glycol, triethylene glycol, tetraethylene glycol, polyethylene glycol of 400 MW or less, neopentyl glycol, 1,2-propylene glycol, 1,3-propanediol, dipropylene glycol, polypropylene glycol, 2-methyl-1,3-propanediol, trimethylolpropane, and polyether polyols, or mixtures thereof. Suitable sugar alcohols include sugar alcohols selected from the group consisting of isomalt, maltitol, sorbitol, xylitol, erythritol, adonitol, dulcitol, pentaerythritol, and mannitol, or mixtures thereof. More preferably, the non-aqueous plasticizer is selected from glycerol, 1,2-propanediol, dipropylene glycol, 2-methyl-1,3-propanediol, trimethylolpropane, triethylene glycol, polyethylene glycol, sorbitol, or mixtures thereof, and most preferably selected from glycerol, sorbitol, trimethylolpropane, dipropylene glycol, and mixtures thereof. One particularly preferred plasticizer system comprises a blend of glycerol, sorbitol, and 2-ethyl-2-hydroxymethyl-1,3-propanediol. Another particularly preferred plasticizer system comprises a blend of glycerin, dipropylene glycol, and sorbitol. Preferably, the film contains 5% to 50% by weight, preferably 10% to 40% by weight, more preferably 20% to 30% by weight of the non-aqueous plasticizer.

[0031] Preferably, the water-soluble film according to the present invention contains a surfactant. Preferably, the water-soluble film contains 0.1% to 5% by weight, preferably 1% to 3% by weight, of the surfactant. Suitable surfactants include nonionic, cationic, anionic, and bipolar types. Suitable surfactants include, but are not limited to, polyoxyethylene-modified polyoxypropylene glycol, alcohol ethoxylates, alkylphenol ethoxylates, tertiary acetylene glycol and alkanolamides (nonionic substances), polyoxyethylene-modified amines, quaternary ammonium salts and quaternized polyoxyethylene-modified amines (cationic substances), and amine oxides, N-alkyl betaines and sulfobetaines (bipolar substances). Other suitable surfactants include sodium dioctyl sulfosuccinate, lactyl fatty acid esters of glycerol and propylene glycol, lactyl esters of fatty acids, sodium alkyl sulfate, polysorbate 20, polysorbate 60, polysorbate 65, polysorbate 80, lecithin, acetylated fatty acid esters of glycerol and propylene glycol, acetylated esters of fatty acids, and combinations thereof.

[0032] Preferably, the water-soluble film according to the present invention contains a lubricant / release agent. Suitable lubricants / release agents include, but are not limited to, fatty acids and their salts, aliphatic alcohols, fatty acid esters, aliphatic amines, aliphatic amine acetates, and fatty acid amides. Preferred lubricants / release agents are fatty acids, fatty acid salts, and aliphatic amine acetates. Preferably, the amount of lubricant / release agent in the water-soluble film is in the range of 0.02% to 1.5% by weight of the water-soluble film, preferably 0.1% to 1% by weight.

[0033] Preferably, the water-soluble film contains a filler, a spreader, an anti-tack agent, a detack agent, or a mixture thereof. Suitable fillers, spreaders, anti-tack agents, detack agents, or mixtures thereof include, but are not limited to, starch, modified starch, cross-linked polyvinylpyrrolidone, cross-linked cellulose, microcrystalline cellulose, silica, metal oxides, calcium carbonate, talc, and mica. Preferred materials are starch, modified starch, and silica. Preferably, the amount of filler, spreader, anti-tack agent, detack agent, or mixture thereof in the water-soluble film is in the range of 0.1% to 25% by weight of the water-soluble film, preferably 1% to 10% by weight, more preferably 2% to 8% by weight, and most preferably 3% to 5% by weight. In the absence of starch, one preferred range of suitable fillers, spreaders, anti-tacks, detacks, or mixtures thereof is 0.1% to 1% by weight, preferably 4% by weight, more preferably 6% by weight, even more preferably 1% to 4% by weight, and most preferably 1% to 2.5% by weight of the water-soluble film.

[0034] Preferably, the water-soluble film according to the present invention has a residual moisture content in the range of at least 4% by weight, more preferably 4% to 15% by weight, and even more preferably 5% to 10% by weight, as measured by Karl Fischer titration. The film was pre-conditioned for 24 hours at a temperature of 20°C and a relative humidity of 60% before determining the residual moisture content.

[0035] Preferably, the water-soluble film according to the present invention contains an aversive agent, preferably a bittering agent. Suitable bittering agents include, but are not limited to, naringin, sucrose octaacetate, quinine hydrochloride, denatonium benzoate, or mixtures thereof. Any suitable concentration of the aversive agent may be used in the film. Suitable levels for water-soluble films include, but are not limited to, 1 ppm to 5000 ppm, or more specifically, 100 ppm to 2500 ppm, or even more specifically, 250 ppm to 2000 rpm.

[0036] The water-soluble film according to the present invention may be opaque, transparent, or translucent. The water-soluble film according to the present invention may include a printable area. The printable area can be obtained using standard techniques such as flexographic printing or inkjet printing.

[0037] The water-soluble film or water-soluble unit-dose article or both according to the present invention may be coated with a lubricant. Preferably, the lubricant is selected from talc, zinc oxide, silica, siloxane, zeolite, silicic acid, alumina, sodium sulfate, potassium sulfate, calcium carbonate, magnesium carbonate, sodium citrate, sodium tripolyphosphate, potassium citrate, potassium tripolyphosphate, calcium stearate, zinc stearate, magnesium stearate, starch, modified starch, clay, kaolin, gypsum, cyclodextrin, or mixtures thereof.

[0038] pectin Pectin is a complex polysaccharide found in the cell walls of various fruits and vegetables. It is a natural substance that acts as a structural component, providing strength and rigidity to plant tissues. Pectin is primarily extracted from citrus fruits, apples, and other sources rich in this polysaccharide.

[0039] Chemically, pectin is composed of sugar chain molecules, including galacturonic acid, which is its main component. The structure of pectin can vary depending on factors such as the source and extraction method. Pectin molecules may contain various sugar side chains, such as arabinose, galactose, and rhamnose, which contribute to their functional properties. It may also have methyl esters of galacturonic acid specific to the material.

[0040] Pectin may be unmodified or modified, and such modifications include substitution (alkylation, amidation, quaternization, thiolation, sulfation, oxidation, etc.), chain elongation (crosslinking and grafting), and depolymerization (chemical, physical, and enzymatic degradation).

[0041] Pectin contains a helical chain of galacturonic acid (GalA) residues linked by alpha-1,4 glycosidic bonds, where the carboxyl groups can be esterified to any extent with methyl groups or partially or completely converted to salts. Pectin may contain any type of galacturonane, including heterogalacturonan (HG), substituted galacturonans, rhamnogalacturonan I pectin (RG-I), rhamnogalacturonan II (RG-II), xylogalacturonan (XGA), or mixtures thereof.

[0042] Esterification The esterification level or degree of esterification (DE) is the ratio of esterified galacturonic acid groups to total galacturonic acid groups (and therefore has a value of 0% to 100%). Preferably, the degree of esterification is 1% to 49%, more preferably 25% to 48%, and most preferably 24% to 35%.

[0043] The level of esterification by methyl groups may be high methoxypectin (HM pectin), in which more than half of all galacturonic acid is esterified, or low methoxypectin (LM pectin), in which less than half of all galacturonic acid is esterified. In the case of LM pectin, the degree of methoxylation is preferably 1% to 49%, more preferably 25% to 48%, and most preferably 24% to 35%. Preferably, the pectin is high methoxypectin.

[0044] Amidated pectin Pectin can be amidated. Alternatively, pectin does not need to be amidated. Representative segments of non-acetylated, non-amidated pectin molecules:

[0045] [ka]

[0046] "Amidated pectin" is intended to mean that pectin is modified by the conversion of some of its carboxyl groups to carboxylic acid amides, for example, as shown in the amidation units below.

[0047] [ka]

[0048] Preferably, the degree of amidation is 1% to 90%, more preferably 10 to 50%, even more preferably 20% to 40%, and most preferably 20 to 30%. The degree of amidation (DA) can be measured based on the total number of galacturonic acid units in the molecule by various known methods, such as near-infrared spectroscopy.

[0049] Pectin can be amidated by any suitable method, for example, with ammonia which may be soluble in methanol or in aqueous form. This converts the methyl ester groups to carboxamide [-CONH2] groups. In this process, the methyl ester groups are lost as they are converted to carboxamide groups, so that low-methoxyl (LM) pectin (by definition) is formed. Amidated (LM) pectin may have 15-25% of the carboxyl groups converted to carboxamide groups.

[0050] Low methoxyamidated pectin Amidation can achieve a reduction in methyl levels and therefore provide low methoxyamidated pectin.

[0051] supplier Pectin is preferably of plant origin and can be supplied from any suitable source, such as citrus peel or pomace, or from both by-products of fruit production. Pomace can also be obtained from sugar beets.

[0052] Pectin MW The pectin has a weight-average molecular weight of 200,000 g / mol or more, preferably 250,000 g / mol or more, and more preferably 300,000 g / mol or more.

[0053] Polyvinyl alcohol The water-soluble film contains polyvinyl alcohol. The water-soluble polymer can be produced by mixing pectin with polyvinyl alcohol. The starting polyvinyl alcohol may be a polyvinyl alcohol homopolymer or a polyvinyl alcohol copolymer, or a blend thereof. Preferably, the starting polyvinyl alcohol is a polyvinyl alcohol homopolymer or a blend thereof.

[0054] The term "homopolymer" generally includes polymers having a single type of monomer repeating unit (e.g., polymer chains consisting of or essentially consisting of a single monomer repeating unit). In particular, in the case of polyvinyl alcohol, the term "homopolymer" includes polymers having a distribution of vinyl alcohol monomer units and optionally vinyl acetate monomer units (e.g., polymer chains consisting of or essentially consisting of vinyl alcohol monomer units and vinyl acetate monomer units), depending on the degree of hydrolysis. In the limited case where hydrolysis is 100%, polyvinyl alcohol homopolymers may also include pure homopolymers having only vinyl alcohol units.

[0055] The term “copolymer” generally includes polymers having two or more types of monomer repeating units (e.g., polymer chains consisting of or essentially consisting of two or more different monomer repeating units, whether such as random copolymers or block copolymers). In particular, in the case of polyvinyl alcohol, the term “copolymer” (or “polyvinyl alcohol copolymer”) includes copolymers having a distribution of vinyl alcohol monomer units and optionally vinyl acetate monomer units, and at least one other type of monomer repeating unit (e.g., a ter (or higher) polymer chain consisting of vinyl alcohol monomer units, vinyl acetate monomer units, and one or more other monomer units, e.g., anionic or even nonionic monomer units, or essentially consisting of them), depending on the degree of hydrolysis. In the limited case where hydrolysis is 100%, polyvinyl alcohol copolymer may include copolymers having vinyl alcohol units and one or more other monomer units, but not vinyl acetate units.

[0056] Preferably, the polyvinyl alcohol polymer, preferably the polyvinyl alcohol homopolymer, has an average degree of hydrolysis of 75% to 100%, preferably 80% to 95%, and most preferably 85% to 90%. Those skilled in the art will understand how to measure the degree of hydrolysis of a polyvinyl alcohol polymer. A suitable test method for measuring the degree of hydrolysis is in accordance with the standard method JIS K6726.

[0057] Preferably, the polyvinyl alcohol, preferably homopolymer, has an average viscosity of 1 to 30 mPas, more preferably 5 to 25 mPas, and most preferably 10 to 25 mPas, and the viscosity is measured as a 4% aqueous solution in desalinated water at 20°C. Throughout the invention, the viscosity of any polyvinyl alcohol polymer can be determined by measuring a freshly prepared solution using a Brookfield LV viscometer with a UL adapter, as described in British Standard EN ISO 15023-2:2006 Annex E Brookfield Test method. It is standard practice to present the viscosity of a 4% aqueous solution of polyvinyl alcohol at 20°C.

[0058] Suitable polyvinyl alcohol homopolymers are available from Sigma Aldrich under the trademark name Mowiol.

[0059] Preferably, the water-soluble polymer is present in the water-soluble film according to the present invention at a concentration of 60% to 80% by weight and consists of a mixture of pectin and polyvinyl alcohol. Preferably, the polyvinyl alcohol starting material is a homopolymer having an average degree of hydrolysis of 85% to 90% and an average viscosity of 10 to 20 mPas when measured as a 4% aqueous solution in desalinated water at 20°C.

[0060] Film manufacturing method The water-soluble films according to the present invention can be formed by mixing and co-casting pectin and polyvinyl alcohol in a casting solution, together with preferred and optional secondary additives as described herein, according to the types and amounts described herein. When the polymers are mixed first, the water-soluble film is preferably formed by casting the resulting mixture (e.g., together with other plasticizers and other additives) to form a film. Another embodiment features a water-soluble film formed by extrusion, for example, blown extrusion. Most preferably, the water-soluble films according to the present invention are prepared by solution casting.

[0061] Water-soluble unit quantity article A further aspect of the present invention is a water-soluble unit-dose article comprising a water-soluble film according to the present invention, a treatment composition, and at least one internal compartment, wherein the treatment composition is contained within at least one compartment. The treatment composition will be described in more detail below.

[0062] A water-soluble unit-dose article comprises a water-soluble film molded such that the unit-dose article has at least one internal compartment surrounded by a water-soluble film. The unit-dose article may comprise a first water-soluble film and a second water-soluble film, sealed together to define the internal compartment. The water-soluble unit-dose article is configured to prevent the treatment composition from leaking out of the compartment during storage. However, when the water-soluble unit-dose article is added to water, the water-soluble film dissolves, releasing the contents of the internal compartment into the washing solution.

[0063] A compartment should be understood as a sealed internal space within a unit-dose article that holds the detergent composition. During manufacturing, the first water-soluble film may be shaped to have an opening compartment into which the treatment composition is added. Next, the first film is covered with a second water-soluble film in an orientation that closes the opening of the compartment. The first and second films are then sealed together along the sealing region. Sealing can be performed after solvent sealing, heat sealing, or a combination thereof. A preferred sealing solvent is water.

[0064] A unit dose article may contain one or more compartments, more than two compartments, or more than three compartments. The compartments may be arranged in an overlapping orientation, that is, one on top of the other. In such an orientation, the unit dose article contains three films: top, middle, and bottom. Alternatively, the compartments may be positioned in a side-by-side orientation, that is, one adjacent to the other. The compartments may also be oriented in a "tire and rim" arrangement, that is, the first compartment is positioned adjacent to the second compartment, but the first compartment at least partially surrounds the second compartment but does not completely enclose it. Alternatively, one compartment may be completely enclosed within another compartment.

[0065] If a unit-dose article has at least two compartments, one of the compartments may be smaller than the other. If a unit-dose article has at least three compartments, two of the compartments may be smaller than the third compartment, preferably with the smaller compartments overlapping the larger one. The overlapping compartments are preferably oriented adjacent to each other.

[0066] Preferably, the water-soluble unit-dose article comprises at least two compartments, preferably at least three compartments, and more preferably at least four compartments, and most preferably, the water-soluble unit-dose article comprises a first compartment, at least a second compartment superimposed on the first compartment, more preferably at least a third compartment oriented adjacent to the second compartment (with the second and third compartments superimposed on the first compartment), and even more preferably at least a fourth compartment oriented adjacent to the second and third compartments (with the second, third, and fourth compartments superimposed on the first compartment).

[0067] In a multi-compartment orientation, the detergent composition may be contained in at least one of the compartments. For example, the detergent composition may be contained in only one compartment, or in two compartments, or even three compartments, or even all of the available compartments.

[0068] Each section may contain the same composition or different compositions. The different compositions may all be in the same form or in different forms.

[0069] The water-soluble unit-dose article may contain at least two internal compartments, and the detergent composition may be contained in at least one of these compartments. Preferably, the unit-dose article contains at least three compartments, and the detergent composition may be contained in at least one of these compartments.

[0070] A water-soluble unit-dose article according to the present invention may comprise at least one water-soluble film according to the present invention. Alternatively, a water-soluble unit-dose article according to the present invention may comprise at least two or even at least three water-soluble films according to the present invention. Alternatively, a water-soluble unit-dose article according to the present invention may comprise only the water-soluble films according to the present invention, i.e., none of the water-soluble films outside the scope of the present invention. Preferably, a water-soluble single-compartment unit-dose article or a water-soluble multi-compartment unit-dose article having multiple adjacent compartments is prepared, where both the lower and upper water-soluble films enclosing the individual compartments are water-soluble films according to the present invention. Alternatively, a water-soluble unit-dose article having compartments in an overlapping configuration where either the upper or lower water-soluble film is according to the present invention may be prepared. In this configuration, each of the upper, lower, and central water-soluble films may be a water-soluble film according to the present invention. Alternatively, one film, for example, only the central water-soluble film, or only the upper water-soluble film, or only the lower water-soluble film, or any combination of these water-soluble films, may be a water-soluble film according to the present invention, while the remaining water-soluble films are outside the scope of the present invention. Preferably, all water-soluble films contained within a water-soluble unit dose article are water-soluble films according to the present invention. These water-soluble films according to the present invention may be chemically and physically the same, or they may be chemically and / or physically different. "Different" means that the first water-soluble film has at least one chemical and / or physical characteristic that is different from the second water-soluble film. This characteristic can be obtained by selecting different polymer resins, e.g., the average viscosity of the individual polymer solutions, the average degree of hydrolysis of the individual polymers, the ratio of the first water-soluble polymer to the second water-soluble polymer, or a mixture thereof of different polymer resins. The "target average" takes into account the standard polymer variability inherent in any manufacturing process. Alternatively, this characteristic can also be obtained by changing the relative content of individual components within the water-soluble film, such as polymer resins, with respect to the plasticizer content or water content, or by changing the precise chemical properties of additives."Different" characteristics are evaluated for the starting film before deformation, and differences in water-soluble film content as a result of the deformation process, exchange of active substances between the film and the detergent composition resulting from exposure to the encapsulated detergent composition, and exchange of active substances with the surrounding storage environment are excluded in this evaluation.

[0071] Figure 1 discloses a water-soluble unit-dose article (1) according to the present invention. The water-soluble unit-dose article (1) comprises a first water-soluble film (2) and a second water-soluble film (3), which are sealed together in a sealing region (4). The detergent composition (5) is contained within the water-soluble unit-dose article (1).

[0072] Processing composition The treatment composition may be selected from laundry detergent compositions, laundry softening compositions, automatic dishwashing compositions, hard surface cleaning compositions, or mixtures thereof, preferably a laundry detergent composition, and preferably the treatment composition is a liquid, powder, or mixture thereof, preferably a liquid composition.

[0073] The term "liquid" includes gels, solutions, suspensions, pastes, or mixtures thereof.

[0074] In this specification, "powder" means that the treatment composition may contain solid particles or may be a single homogeneous solid. Preferably, the powder treatment composition contains particles. This means that the powder treatment composition contains individual solid particles, and does not mean that the solid is a single homogeneous solid. The particles may be free-flowing or compressed, and are preferably free-flowing.

[0075] Preferably, the treatment composition is a laundry detergent composition, most preferably a liquid laundry detergent composition.

[0076] The laundry detergent composition can be used in hand washing operations or in automatic machine washing operations, and is preferably used in automatic machine washing operations.

[0077] Preferably, the treatment composition contains a non-soap surfactant, and the non-soap surfactant includes an anionic non-soap surfactant and a nonionic surfactant. Preferably, the treatment composition contains 10% to 60% by weight, more preferably 20% to 55% by weight, of the non-soap surfactant.

[0078] The weight ratio of non-soap anionic surfactant to nonionic surfactant may be 1:1 to 20:1, preferably 1.5:1 to 17.5:1, 2:1 to 15:1, or 2.5:1 to 13:1.

[0079] Preferably, the non-soap anionic surfactant comprises a linear alkylbenzene sulfonate, an alkyl sulfate, or a mixture thereof. The weight ratio of linear alkylbenzene sulfonate to alkyl sulfate is 1:2 to 9:1, preferably 1:1 to 7:1, more preferably 1:1 to 5:1, and most preferably 1:1 to 4:1.

[0080] Exemplary linear alkylbenzene sulfonates are C 10 ~C 16 Alkylbenzenesulfonic acid or C 11 ~C 14 This is an alkylbenzenesulfonic acid. "Linear" in this specification means that the alkyl group is linear. Alkylbenzenesulfonates are well known in the art.

[0081] Alkyl sulfate anionic surfactants may include alkoxylated alkyl sulfates, non-alkoxylated alkyl sulfates, or mixtures thereof. Preferably, the alkoxylated alkyl sulfate anionic surfactant is an ethoxylated alkyl sulfate anionic surfactant.

[0082] The alkyl sulfate anionic surfactant may include an ethoxylated alkyl sulfate anionic surfactant having a molar average degree of ethoxylation of preferably 1 to 5, more preferably 1 to 3, and most preferably 2 to 3.

[0083] The alkyl sulfate anionic surfactant may contain non-ethoxylated alkyl sulfates and ethoxylated alkyl sulfates, and the molar average degree of ethoxylation of the alkyl sulfate anionic surfactant is 1 to 5, more preferably 1 to 3, and most preferably 2 to 3.

[0084] The alkyl fraction of the alkyl sulfate anionic surfactant can preferably be derived from an aliphatic alcohol, an oxo-synthetic alcohol, a Guerbet alcohol, or a mixture thereof.

[0085] Preferably, the treatment composition contains 10% to 50% by weight, more preferably 15% to 45% by weight, even more preferably 20% to 40% by weight, and most preferably 30% to 40% by weight of a non-soap anionic surfactant.

[0086] Preferably, the nonionic surfactant is selected from alcohol alkoxylates, oxo-synthetic alcohol alkoxylates, Guerbet alcohol alkoxylates, alkylphenol alcohol alkoxylates, or mixtures thereof.

[0087] The treatment composition preferably contains 0.01% to 25% by weight, preferably 1% to 22.5% by weight, more preferably 5% to 20% by weight, and most preferably 8% to 20% by weight of a nonionic surfactant.

[0088] Preferably, the treatment composition comprises 0.5% to 20% by weight, more preferably 1% to 15% by weight, even more preferably 1.5% to 10% by weight, and most preferably 2% to 8% by weight of soap, preferably a fatty acid salt, more preferably an amine-neutralized fatty acid salt, wherein the amine is preferably an alkanolamine, more preferably selected from monoethanolamine, diethanolamine, triethanolamine, or a mixture thereof, and more preferably monoethanolamine.

[0089] Preferably, the treatment composition is a liquid treatment composition, and more preferably, the liquid treatment composition contains less than 15% by weight, more preferably less than 13% by weight, even more preferably 1% to 12% by weight, and most preferably 5% to 12% by weight of water.

[0090] Preferably, the treatment composition is a liquid treatment composition comprising a non-aqueous solvent selected from 1,2-propanediol, dipropylene glycol, tripropylene glycol, glycerol, sorbitol, polyethylene glycol, or a mixture thereof. Preferably, the liquid treatment composition contains 10% to 40% by weight, preferably 15% to 30% by weight, of the non-aqueous solvent.

[0091] Preferably, the treatment composition contains a fragrance.

[0092] Preferably, the treatment composition includes auxiliary components selected from the group comprising enzymes, citrates, bleaching agents, bleaching catalysts, dyes, hue dyes, whitening agents, cleaning polymers containing alkoxylated polyamines and polyethyleneimines, stain-releasing polymers, surfactants, solvents, color transfer inhibitors, chelating agents, encapsulated fragrances, polycarboxylates, structuring agents, pH adjusters, and builders containing mixtures thereof.

[0093] Those skilled in the art will be able to envision, using known knowledge and techniques, how to formulate and prepare suitable treatment compositions. Treatment compositions may include common detergent components, such as surfactants, polymers, bleaches, enzymes, fragrances, dyes, structuring agents, fillers, water, or mixtures thereof.

[0094] Those skilled in the art will be familiar with known techniques for manufacturing water-soluble unit-dose articles according to the present invention.

[0095] The dimensions and values ​​disclosed herein should not be understood as being strictly limited to the exact numerical values ​​listed. Instead, unless otherwise specified, each such dimension is intended to mean both the listed value and the functionally equivalent range encompassing that value. For example, a dimension disclosed as "40 mm" is intended to mean "approximately 40 mm." [Examples]

[0096] The compatibility, solubility, and mechanical properties (e-modulus of elasticity, tensile strain at break, and tensile stress at break) between the film according to the present invention (a film containing pectin) and a comparative film containing carrageenan or caseinate instead of pectin were compared.

[0097] [Table 1]

[0098] As can be seen from the table above, the film according to the present invention (film C) exhibits better film-liquid treatment composition interaction than the caseinate-containing film (film A), and has better solubility and mechanical properties than the comparative films (films A and B). The pectin / PVA solution was found to be more suitable for casting.

[0099] For more details, As indicated by the swelling percentage, a clear improvement in preventing excessive plasticization of water-soluble films upon contact with the treated composition is observed when the protein-containing resin (caseinate) is replaced with a polysaccharide-containing resin (carrageenan / pectin). In the case of carrageenan, the improved film-treatment composition compatibility is achieved at the expense of film dissolution and mechanical properties, more specifically, a reduction in the percentage of dissolved film and a reduction in the percentage of tensile strain at break are observed. A more significant decrease in the E modulus is also observed for the film of the present invention. These data indicate that the more robust profile observed for pectin-containing films is not seen across other polysaccharide-containing films. Carrageenan was observed to be susceptible to gelation and aggregation during the cooling of the casting solution, and therefore, stricter control of the production conditions was required to obtain the resulting film. This high gelation behavior was even more pronounced with another polysaccharide-containing resin (alginate), making it extremely difficult to even obtain a film suitable for characterization, and the resin itself was not further processed. Caseinate-based solutions were similarly observed to be susceptible to foaming, thus complicating the film-making process, a complexity not observed in the film of the present invention.

[0100] The details of the tests conducted are described below.

[0101] Film manufacturing method A 15% by weight activated aqueous polyvinyl alcohol homopolymer stock solution (Mowiol 18 / 88, manufactured by Sigma Aldrich) was prepared by mixing the polyvinyl alcohol homopolymer in a 6% by weight glycerol plasticizer solution in desalted water at 60°C until no undissolved polyvinyl alcohol homopolymer was visible.

[0102] A 30% by weight active polysaccharide or protein solution (pectin from Sigma Aldrich (from citrus fruits), iotacarrageenan from TCI, sodium caseinate from Acros, and sodium alginate from VWR) was prepared in desalted water.

[0103] A polysaccharide or protein solution was dropped under stirring into an aqueous solution of polyvinyl alcohol homopolymer / glycerol until the target weight ratio of polyvinyl alcohol homopolymer-polysaccharide / protein was obtained in the casting solution. The solution was mixed overnight to make a homogeneous solution and left to stand for 1 - 2 hours to enable degassing before casting.

[0104] The solution was poured as a thin layer onto a PET casting plate through a film applicator having a wet gap in the range of 250 μm to 350 μm and dried overnight at room temperature and 35% rH. The obtained film contained 74 wt% of a water-soluble polymer resin, 20 wt% of a glycerol plasticizer system, and 6% of water. The results are summarized in the following table.

[0105]

Table 2

[0106] Treatment composition The swelling percentage of the film was evaluated using the following liquid detergent compositions.

[0107]

Table 3

[0108]

Chemical formula

[0109] Test method Swelling percentage: 11cm x 12cm water-soluble film samples were prepared and exposed to the test treatment composition. 750mL of this test liquid treatment composition was required for each test film. The bottom of a clean, inert glass container was covered with a thin layer of liquid, and the first film to be tested was spread on top of the liquid. Any trapped air bubbles beneath the film were gently pushed outwards. A thin layer of liquid was spread over the first film sample, followed by the second film sample. This process was repeated until five film samples were stacked with thin layers of liquid in between. Next, the remaining liquid was gently poured over the top of the fifth film so that the film was fully immersed in the liquid. The film was kept wrinkle-free, and no air bubbles were allowed to come into contact with the film. The films were stored in a sealed container under conditions of 50°C for 5 days and 21°C overnight, while still in contact with the liquid. A separate glass container was used for each different film to be tested. The films were then removed from the storage containers, and any excess liquid was removed from the films. A sheet of paper was placed on top of the film, which was then placed on the bench paper. The film was then thoroughly wiped dry with dry paper, such as a dry tissue that did not contain any fibers that could adhere to the film surface. The weight of the film was measured before and after the immersion test, and the relative weight increase / loss was calculated and expressed as a percentage change according to the following formula. Change % = (Final weight - Starting weight / Starting weight) * 100. The average value of five film samples per test solution was calculated and reported.

[0110] A negative film swelling value may result in a brittle film during product aging, while a film swelling value exceeding 15% may make the unit-dose article flexible during aging, and therefore aesthetically unattractive. Preferably, the film swelling value is between 5% and 15%.

[0111] Dissolution %: In this dissolution chamber residue test method, for each test film, three test specimens are cut out using a cutting punch from a selected test film having a thickness of approximately 76 μm. When cutting from a film web manufactured by a continuous process, if applicable, the test specimens must be cut from the web area at even intervals along the transverse direction of the web (i.e., perpendicular to the machine direction). Weigh the film test specimens and track them throughout the test. Record the initial film weight (Fo). Weigh two sets of ultrasonically treated, clean, and dried screens for each test specimen and track the screens throughout the test. Record the initial screen weight (So as the sum of the two screens combined). Assemble the test specimen dissolution chamber by placing the film test specimen between the centers of the two screens, followed by two rubber gaskets (one on each side between the screen and the washer), and then two washers flat. Secure the dissolution chamber assembly using four binder clips evenly spaced around the washer, folding the clips away from the screen. Fill the beaker with 1500 mL of RO water (e.g., demineralized water) at laboratory temperature (5 ± 1 °C) and record the room temperature. Set the timer to 10 minutes for the predetermined immersion time. Place the dissolution chamber assembly in the beaker, immediately start the timer, and insert the dissolution chamber assembly into the water at an entry angle of approximately 45°. This entry angle facilitates the removal of air bubbles from the chamber. The dissolution chamber assembly is placed at the bottom of the beaker so that the test specimen film is positioned horizontally approximately 10 mm from the bottom of the beaker. The four folded binder clips of the dissolution chamber assembly are preferable for maintaining a film clearance of approximately 10 mm from the bottom of the beaker, but any other equivalent support means can be used. At the end of 10 minutes, slowly remove the dissolution chamber assembly from the beaker at an angle of approximately 45°. Hold the dissolution chamber assembly horizontally on a pre-weighed aluminum pan to capture all liquid dripping from the screen, and carefully remove the binder clips, washers, and gaskets. Do not open the screen while it is clamped.Place the sandwiched screen (i.e., screen / residual undissolved film / screen) on an aluminum pan and dry it in an oven at 100°C for 30 minutes. Weigh the dried sandwiched screen set, including all of the remaining undissolved film inside, together with the aluminum pan. Subtract the weight of the aluminum pan and record the final sandwiched screen weight (collectively Sf, including the dry film droplets). Calculate the percentage of residue remaining on the film specimen ("DC Residue"). DC residue=100×((Sf-So) / F0)

[0112] Therefore, the dissolution percentage is equal to 100% minus the residue percentage.

[0113] The actual thickness of the water-soluble film samples was measured before testing, and the dissolution percentage data was normalized from the actual film thickness toward a 76-micrometer test film to ensure fair comparisons between test intervals.

[0114] E modulus of elasticity, tensile strain at fracture (%), and tensile stress at fracture: The procedure includes determining the maximum tensile strength, E modulus, and elongation at break in % according to ASTM D882 ("Standard Test Method for Tensile Properties of Thin Plastic Sheeting") or an equivalent. An INSTRON tensile testing apparatus (Model 5544 tensile testing machine or equivalent) is used to collect film data. The tests are performed in a standard laboratory atmosphere of 23±2.0℃ and 35±5% relative humidity. At least three test specimens are cut from each using a reliable cutting tool to ensure dimensional stability and repeatability, and each measurement is tested in the machine direction (MD) (if applicable). The test specimens are prepared from a single film sheet with a length (MD) of 12 cm and a width of 17 cm, which is then cut into individual 1-inch wide (2.54 cm) samples with a thickness of approximately 76 μm. The samples are transferred to the INSTRON tensile testing machine and the tests are performed. The tensile testing machine is prepared according to the manufacturer's instructions, equipped with a 500 N load cell, and calibrated. Attach the appropriate grip and face (INSTRON grip with a 25mm wide, rubber-coated face, model number 2702-032, or equivalent). Mount the sample on a tensile testing machine and analyze it to determine the e-modulus (i.e., the initial tangent to the stress-strain curve) and the maximum tensile strength (i.e., the recorded maximum stress, equal to the stress required for normal fracture). The tensile strain at fracture % is measured according to the same test method. The actual thickness of the water-soluble film sample was measured before testing, and the mechanical test data was normalized from its actual film thickness toward the 76-micron test film to ensure fair comparison between test intervals.

[0115] The dimensions and values ​​disclosed herein should not be understood as being strictly limited to the exact numerical values ​​listed. Instead, unless otherwise specified, each such dimension is intended to mean both the listed value and the functionally equivalent range encompassing that value. For example, a dimension disclosed as "40 mm" is intended to mean "approximately 40 mm."

Claims

1. A water-soluble film, wherein the water-soluble film comprises a water-soluble polymer, and the water-soluble polymer is i) Pectin and, ii) Contains a blend of polyvinyl alcohol, A water-soluble film in which the pectin and polyvinyl alcohol are in a weight ratio of 1:9 to less than 1:

1.

2. The water-soluble film according to claim 1, wherein the weight ratio of the pectin to the polyvinyl alcohol is 1:9 to 3:

7.

3. The water-soluble film according to claim 1 or 2, wherein the water-soluble polymer is present in an amount of 50% to 95% by weight, preferably 55% to 90% by weight, and more preferably 60% to 80% by weight of the film.

4. The water-soluble film according to any one of claims 1 to 3, wherein the film comprises a non-aqueous plasticizer, preferably selected from polyols, sugar alcohols, and mixtures thereof, more preferably selected from glycerol, 1,2-propanediol, trimethylolpropane, dipropylene glycol, 2-methyl-1,3-propanediol, 2-ethyl-2-hydroxymethyl-1,3-propanediol, triethylene glycol, polyethylene glycol, sorbitol, or mixtures thereof, most preferably selected from glycerol, sorbitol, trimethylolpropane, dipropylene glycol, and mixtures thereof, and preferably the film comprises 5% to 50% by weight, preferably 10% to 40% by weight, more preferably 20% to 30% by weight of the non-aqueous plasticizer of the film.

5. The polyvinyl alcohol has an average degree of hydrolysis (%) of 75% to 100%. The water-soluble film according to any one of claims 1 to 4, wherein the polyvinyl alcohol has an average viscosity of 1 mPas to 30 mPas, and the viscosity is measured as a 4% aqueous solution in desalinated water at 20°C.

6. The water-soluble film according to any one of claims 1 to 5, wherein the polyvinyl alcohol has an average degree of hydrolysis of 80% to 95%, preferably 85% to 90%.

7. The water-soluble film according to any one of claims 1 to 6, wherein the polyvinyl alcohol comprises vinyl alcohol units and vinyl acetate monomer units.

8. The water-soluble film according to any one of claims 1 to 7, wherein the polyvinyl alcohol has an average viscosity of 5 mPas to 25 mPas, preferably 10 mPas to 25 mPas, and the viscosity is measured as a 4% aqueous solution in desalinated water at 20°C.

9. The water-soluble film according to any one of claims 1 to 8, wherein the water-soluble film contains a surfactant in an amount of 0.1% to 5% by weight, preferably 1% to 3% by weight, of the water-soluble film.

10. The water-soluble film according to any one of claims 1 to 9, wherein the water-soluble film, when measured by Karl Fischer titration, contains a residual moisture content of at least 4% by weight, more preferably 4% to 15% by weight, and even more preferably 5% to 10% by weight of the film.

11. The water-soluble film according to any one of claims 1 to 10, wherein the water-soluble film has a thickness of 30 μm to 150 μm, preferably 50 μm to 100 μm, and most preferably 60 μm to 85 μm.

12. A method for producing a film according to any one of claims 1 to 11, i) A step of dissolving polyvinyl alcohol, pectin, and any additive in water to form an aqueous solution, A method comprising the steps of: ii) casting the solution obtained from step i) onto a film.

13. A water-soluble unit-dose article comprising a water-soluble film according to any one of claims 1 to 11, a treatment composition, and at least one internal compartment, wherein the treatment composition is contained within the at least one internal compartment.

14. The water-soluble unit-dose article according to claim 13, wherein the processing composition is selected from laundry detergent compositions, laundry softening compositions, automatic dishwashing compositions, hard surface cleaning compositions, or mixtures thereof, preferably a laundry detergent composition, and preferably the processing composition is a liquid, powder, or mixture thereof, preferably a liquid laundry composition.

15. The water-soluble unit dose article according to claim 13 or 14, wherein the treatment composition comprises a non-soap surfactant, preferably the non-soap surfactant is selected from an anionic non-soap surfactant, a nonionic surfactant, and a mixture thereof, and preferably the treatment composition comprises 10% to 60% by weight, more preferably 20% to 55% by weight of the non-soap surfactant.

16. The water-soluble unit-dose article according to any one of claims 13 to 15, wherein the treated composition contains less than 15% by weight, more preferably less than 13% by weight, most preferably 1% to 12% by weight, and even more preferably 5% to 12% by weight of water.

17. The water-soluble unit-dose article according to any one of claims 13 to 16, wherein the treatment composition contains 10% to 40% by weight, preferably 15% to 30% by weight, of the treatment composition a non-aqueous solvent.

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