JP6749424B2 - Use of water soluble unit dose articles to enhance the consumer's detergent dosing experience - Google Patents

Description

The present invention relates to the use of water-soluble unit dose articles to enhance the consumer's detergent administration experience.

Water-soluble detergent unit dose articles are preferred by consumers because they are convenient, efficient, and a clean method of administering detergent during the cleaning process. The water-soluble unit dosage form does not require the consumer to meter the dose on their own, nor does it suffer the accidental leakage of detergent, which some consumers find to be cumbersome and inconvenient. Means that.

However, such water soluble unit dose articles may experience premature rupture during handling. In such cases, the water soluble film may be torn or torn when the consumer moves the water soluble unit dose product from the storage container to the automatic washing machine, preferably to the drum of the automatic washing machine. Bringing early release of contents on the hands of consumers. This adversely affects the dosing experience, as consumers find the work cumbersome and inconvenient.

In addition, such premature rupture may occur in a storage container such as a bag or a tab type container during transfer. This again provides a cumbersome and inconvenient dosing/handling experience for the consumer because the detergent composition from the ruptured article contaminates the unit dose article.

Therefore, there is a need in the art to improve the consumer's detergent administration experience. It was surprisingly found that the use of a water-soluble unit dose article according to the invention overcomes this technical problem.

The present invention discloses the use of a unit dose article comprising at least a first water-soluble film, a second water-soluble film, and a detergent composition to enhance the consumer's detergent administration experience. The water-soluble film and the second water-soluble film are chemically different from each other, the first water-soluble film has a first tensile elastic modulus, the second water-soluble film has a second tensile elastic modulus, The first elastic modulus is higher than the second elastic modulus, and the difference between the first elastic modulus and the second elastic modulus is 0.5 MPa to 10 MPa.

The drawings herein are illustrative in nature and are not intended to be limiting.
1 is a schematic diagram of the basic configuration of a strength test and a sealing failure test of a unit dose article. It is a sectional side view of a pouch. It is a multi-compartment pouch.

Use The present invention is directed to the use of a unit dose article comprising at least a first water-soluble film, a second water-soluble film, and a detergent composition to enhance the consumer's detergent administration experience. Film and the second water-soluble film are chemically different from each other.

The unit dose article, first water soluble film, second water soluble film and detergent composition are described in more detail below.

Preferably, the consumer's detergent dosing experience involves the consumer moving at least one water soluble unit dose article from a storage container to an automatic washing machine, preferably the drum of the automatic washing machine. Alternatively, the water soluble unit dose article may be added to the drawer of the automatic washing machine.

The water soluble unit dose article may be added to the washing machine by hand. The water soluble unit dose article may be added to the drum by hand. Alternatively, the water-soluble unit dose article may be dispensed from a storage container into a washing machine, preferably into a drum. Those of ordinary skill in the art will recognize suitable storage containers.

Those skilled in the art will recognize suitable automatic washing machines. One of ordinary skill in the art will appreciate that an automatic washing machine may include a drum and drawer, and place the drum or drawer, and add both the fabric and the water-soluble unit dose article thereto, as appropriate. You will recognize.

Those of ordinary skill in the art will recognize suitable storage containers. Preferably, the storage container is Ru flexible der, preferably Ru resealable der, whether it is a bag, rigid, preferably Ru resealable der, a tab-type container, preferably, the The storage container is equipped with a child safety lid. Those skilled in the art will recognize suitable pediatric safety lids.

Preferably, the improved consumer dosing experience reduces the incidence of premature rupture of the water soluble unit dose article in the consumer's hand during transfer of the water soluble unit dose article from the storage container to the drum. including.

Without wishing to be bound by theory, it was surprisingly found that the use of certain unit dose articles according to the present invention improved the consumer's dosing experience. Such unit dose articles made from a particular selection of two water-soluble films show a reduced number of cases of premature rupture during or shortly before administration, and thus a less hassle and more convenient administration experience. I will provide a.

Water-Soluble Unit-Dose Articles Uses of the unit-dose articles according to the present invention include at least a first water-soluble film, a second water-soluble film, and a detergent composition, the first water-soluble film and the second water-soluble film comprising: They are chemically different from each other.

The water soluble unit dose article comprises a first water soluble film and a second water soluble film configured such that the unit dose article comprises at least one interior compartment surrounded by a water soluble film. The water-soluble films are sealed to each other to define an internal compartment, which also prevents the detergent 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 and the contents of the inner compartment are released into the wash liquor.

A preferred method of making a unit dose article is described in more detail below.

A compartment is to be understood as meaning an enclosed internal space within the unit dose article that holds the detergent composition. During manufacture, the first water-soluble film according to the present invention may be formed to include an open compartment to which the detergent composition is added. The second water-soluble film according to the present invention is then laid over the first film in an orientation that seals the compartment openings. The first and second films are then sealed together along the sealing area.

The unit dose article may include more than one compartment, even at least two compartments, or even at least three compartments. The compartments may be arranged in a superposed orientation, i.e. one on top of the other. In such an orientation, the unit dose article comprises three films, a top, a center and a bottom. Preferably, the central film corresponds to the second water-soluble film according to the present invention and the upper and lower films correspond to the first water-soluble film according to the present invention. Alternatively, the compartments may be located in a parallel orientation, ie one adjacent to the other. The compartments may also be oriented in a “tire and rim” arrangement, ie the first compartment is located adjacent to the second compartment, but the first compartment at least partially surrounds the second compartment, but , Does not completely surround the second compartment. Alternatively, one compartment may be completely enclosed within another. In such a multi-compartment orientation, the first water-soluble film according to the present invention may be formed to include an open compartment to which the detergent composition is added. The second water-soluble film according to the present invention is then laid over the first film in an orientation that seals the compartment openings.

If the unit dose article comprises at least two compartments, one of the compartments may be smaller than the other. If the unit dose article comprises at least three compartments, two of the compartments may be smaller than the third compartment, and preferably the smaller compartment may be overlaid on the larger compartment. The superposed sections are preferably oriented parallel.

In a multi-compartment orientation, the composition according to the invention may be contained within at least one of the compartments. For example, the composition may be contained in only one compartment, or may be contained in two compartments, or even three compartments.

Each compartment may contain the same composition or different compositions. The different compositions may all be in the same form or different forms.

The water soluble unit dose article may comprise at least two internal compartments, the liquid laundry detergent composition is contained within at least one of the present compartments, preferably the unit dose article comprises at least three compartments. An object is contained within at least one of the compartments.

First and Second Water-Soluble Film The water-soluble film unit dose article comprises a first water-soluble film and a second water-soluble film, and the first water-soluble film and the second water-soluble film are chemically different from each other.

For the avoidance of doubt, in the context of the present invention, "chemically different" as used herein means "virgin film", i.e. the manufacture of a unit dose article as received from the supplier/manufacturer. The film prior to unwinding in units has at least one substance present in at least one of the film compositions that distinguishes the first film from the second film for each of the test methods described herein. And at least affects the water capacity and reproduces it in at least one physical film property that is different between the first and second films. Variations in the chemical composition of the film due to the natural manufacturing process, i.e. batch-to-batch variation, are not considered themselves chemically different films within the scope of the present invention.

Non-limiting examples of chemically distinct materials include the use of different polymeric target resins and/or contents, different plasticizer compositions and/or contents, or different surfactants and/or contents. Water-soluble unit dose articles having the same substance content, such as films having independently different physical properties but having independently different film thicknesses, are considered outside the scope of the present invention. Unit dose articles made of film that are independently distinguished via the presence or absence of a coating layer are also considered outside the scope of the present invention.

The first water-soluble film has a first tensile modulus, the second water-soluble film has a second tensile modulus, the first tensile modulus is higher than the second tensile modulus, and the first tensile modulus is The difference between the modulus and the second tensile modulus is 0.5 MPa to 10 MPa, preferably 1 MPa to 8 MPa, more preferably 2 MPa to 7 MPa.

In the present specification, the “difference” means a difference in the value of the first tensile elastic modulus and the value of the second tensile elastic modulus. As used herein, "tensile modulus" means the ability of a film to elongate when subjected to stress. The method of measuring tensile modulus is described in more detail below.

Preferably, the first tensile modulus is 1 MPa to 20 MPa, more preferably 3 MPa to 20 MPa.

Preferably, the second tensile elastic modulus is 1 MPa to 15 MPa, more preferably 3 MPa to 15 MPa.

Preferably, the first water-soluble film has a first tensile strain at break, the second water-soluble film has a second tensile strain at break, and the first tensile strain at break is second at break. Greater than tensile strain. In the present specification, the “difference in tensile strain at break” means the difference in the values of the first tensile strain at break and the second tensile strain at break. The method of measuring tensile strain at break is described in more detail below.

Preferably, the difference between the first tensile strain at break and the second tensile strain at break is 10% to 1000%, preferably 100% to 750%, more preferably 200% to 500%. In the present specification, the “difference in tensile strain at break” means the difference in the values of the first tensile strain at break and the second tensile strain at break.

Preferably, the first tensile strain at break is 300% to 1600%, more preferably 400% to 1200%, most preferably 700% to 1200%.

The second tensile strain at break is preferably 300% to 1200%, more preferably 500% to 1000%.

Preferably, the first water soluble film is thermoformed during manufacture of the unit dose article. As used herein, "thermoforming" means that the film is heated prior to deformation, i.e., the film is passed under an infrared lamp, preferably by laying a water-soluble film over the cavities, It is meant that applying a vacuum or placing under pressure in the cavities allows the deformation process. The second water soluble film may be thermoformed during manufacture of the unit dose article. Alternatively, the second water soluble film may not be thermoformed during manufacture of the unit dose article. Preferably, the first water soluble film is thermoformed during the manufacture of the unit dose article and the second water soluble film is not produced during the manufacture of the unit dose article.

The first water-soluble film, the second water-soluble film, or a mixture thereof, is 40 micrometer to 100 micrometer, preferably 60 micrometer to 90 micrometer, more preferably 70, before being incorporated into a unit dose article. It may independently have a thickness of micrometers to 80 micrometers.

Preferably, the difference between the first water-soluble film and the second water-soluble film in thickness before incorporation into a unit dose article is less than 50%, preferably less than 30%, more preferably less than 20%. , Even more preferably less than or equal to 10%.

The first water-soluble film and the second water-soluble film according to the present invention are preferably single-layer films, and more preferably produced by solution casting.

Preferably, the first water-soluble film has a first water capacity, the second water-soluble film has a second water capacity, the first water capacity is less than the second water capacity, and the first water-soluble film is The difference in water capacity between the film and the second water-soluble film is 0.01% to 1%, preferably 0.03% to 0.5%, more preferably 0.05% to 0.3%. As used herein, "difference" means the difference in the value of the first water volume and the value of the second water volume. As used herein, "water capacity" means the capacity of a film to absorb water over a period of time at a specified relative humidity, measured as the weight gain of the film tested. The method of measuring water capacity is described in more detail below.

Preferably, the first water-soluble film has a water capacity of 1% to 10%, more preferably 2% to 8%, most preferably 3% to 6%, and the second water-soluble film is 1. It has a water capacity of 5% to 12%, preferably 2.5% to 10%, more preferably 3.5% to 8%.

Preferably, the first water-soluble film contains a first water-soluble resin and the second water-soluble film contains a second water-soluble resin. Preferably, the first water-soluble resin comprises at least one polyvinyl alcohol homopolymer or at least one polyvinyl alcohol copolymer or blends thereof, and the second water-soluble resin is at least one polyvinyl alcohol homopolymer or Includes at least one polyvinyl alcohol copolymer or blends thereof.

The first water-soluble resin may comprise a blend of a polyvinyl alcohol homopolymer containing anionic monomer units and a polyvinyl alcohol copolymer, preferably based on the total weight of the first water-soluble resin, the blend is 0% by weight. ˜70 wt% of a first water soluble resin of polyvinyl alcohol copolymer containing anionic monomer units and 30 wt% to about 100 wt% of a first water soluble resin of polyvinyl alcohol homopolymer, more preferably, The blend is a polyvinyl alcohol copolymer comprising 10% to 70%, even more preferably 15% to less than 65%, even more preferably 20% to 50%, most preferably 30% to 40% anionic monomer units. And 30% to 90%, or more than 35% to 85%, or 50% to 80%, or 60% to 70% by weight of a first water-soluble resin of polyvinyl alcohol homopolymer. The polyvinyl alcohol copolymer can be present at a concentration that adds up to 100% with the concentration of polyvinyl alcohol homopolymer.

Polyvinyl alcohol homopolymer means polyvinyl alcohol containing polyvinyl alcohol units and optionally, but preferably, polyvinyl acetate units. The polyvinyl alcohol copolymer comprises polyvinyl alcohol units, optionally but preferably polyvinyl acetate units, and anion-modified polyvinyl alcohol units.

The second water-soluble resin may comprise a blend of polyvinyl alcohol homopolymer containing anionic monomer units and polyvinyl alcohol copolymer, preferably based on the total weight of the second water-soluble resin in the film, the blend is preferably More preferably, based on the total weight of the second water-soluble resin in the film, comprising 0% to 70% polyvinyl alcohol copolymer containing anionic monomer units and 30% to 100% polyvinyl alcohol homopolymer. The blend comprises 10% to 70%, even more preferably 15% to 65%, even more preferably 20% to 50%, most preferably 30% to 40% of a polyvinyl alcohol copolymer comprising anionic monomer units, And 30% to 90%, or 35% to 85%, or 50% to 80%, or 60% to 70% by weight of a second water soluble resin of polyvinyl alcohol homopolymer. The polyvinyl alcohol copolymer can be present at a concentration that adds up to 100% with the concentration of polyvinyl alcohol homopolymer.

The anionic monomer unit present in the polyvinyl alcohol copolymer of the first resin, the anionic monomer unit present in the polyvinyl alcohol copolymer of the second resin, or a mixture thereof is vinyl acetate, alkyl acrylate, maleic acid, maleic acid monoester. Alkyl, dialkyl maleate, monomethyl maleate, dimethyl maleate, maleic anhydride, fumaric acid, monoalkyl fumarate, dialkyl fumarate, monomethyl fumarate, dimethyl fumarate, fumaric anhydride, itaconic acid, monomethyl itaconate, itacone Dimethyl acid, itaconic anhydride, citraconic acid, monoalkyl citraconic acid, dialkyl citraconic acid, citraconic anhydride, mesaconic acid, monoalkyl mesaconic acid, dialkyl mesaconic acid, mesaconic anhydride, glutaconic acid, monoalkyl glutaconate, glutaconic acid Dialkyl, glutaconic anhydride, vinylsulfonic acid, alkylsulfonic acid, ethylenesulfonic acid, 2-acrylamido-1-methylpropanesulfonic acid, 2-acrylamido-2-methylpropanesulfonic acid, 2-methylacrylamido-2-methylpropanesulfone May be independently selected from the group consisting of anionic monomers derived from acids, 2-sulfoethyl acrylates, their alkali metal salts, their esters, and combinations thereof,
Preferably, the anionic monomer unit comprises a group of anionic monomers derived from maleic acid, monoalkyl maleates, dialkyl maleates, maleic anhydride, their alkali metal salts, their esters, and combinations thereof. Selected from
More preferably, the anionic monomer unit is the group consisting of anionic monomers derived from maleic acid, monomethyl maleate, dimethyl maleate, maleic anhydride, their alkali metal salts, their esters, and combinations thereof. Selected from.

Preferably, the first and second polyvinyl alcohol copolymers are, independently of the total polyvinyl alcohol copolymer present, 1 mol% to 8 mol%, more preferably 2 mol% to 5 mol%, most preferably 3 mol%. ~4 mol% anionic monomer units.

Preferably, the first polyvinyl alcohol homopolymer and the second polyvinyl alcohol homopolymer and the first polyvinyl alcohol copolymer and the second polyvinyl alcohol copolymer are independently 80% to 99%, preferably 85% to 95%, more preferably Has a degree of hydrolysis of 86%-93%.

Preferably, the first polyvinyl alcohol homopolymer and the second polyvinyl alcohol homopolymer and the first polyvinyl alcohol copolymer and the second polyvinyl alcohol copolymer are independently 4 cP to 40 cP, preferably 10 cP in demineralized water at 25°C. It has a solution viscosity of 4% in the range of ~30 cP, more preferably 12 cP to 25 cP.

Preferably, the first water-soluble film and the second water-soluble film are independently 30 wt% to 90 wt%, more preferably 40 wt% to 80 wt%, even more preferably 50 wt% to 75 wt%. Most preferably, the water-soluble resin content of the film is from 60% to 70% by weight.

Preferably, the water-soluble unit dose article exhibits a dissolution profile of less than 6.2, preferably less than 6, and more preferably less than 5.8, according to the Article Dosage Machine Wash Dissolution Test Method for Unit Dose Articles described below.

The first and/or second film may independently be opaque, transparent or translucent. The first and/or second film may independently include printed areas. The printed area covers 10-80% of the film surface, or 10-80% of the film surface in contact with the interior space of the compartment, or 10-80% of the film surface and 10-80% of the compartment surface. Good.

The printed area may extend over a continuous portion of the film, or may extend over a portion of the continuous portion, i.e., the narrower area of the print, the sum of which is the internal space of the film surface or compartment. Equivalent to 10-80% of the contacting film surface, or both.

The printed areas may include inks, pigments, dyes, bluing agents, or mixtures thereof. The printed area may be opaque, translucent or transparent.

The print area may include a single color, or may include multiple colors and even three colors. The print area may include white, black, blue, red, or a mixture thereof. The print may be present as a layer on the surface of the film, or it may be at least partially penetrating within the film. The film includes a first side and a second side. The printed areas may be on either side of the film, or on both sides of the film. Alternatively, the print area may be at least partially contained within the film body.

The printed areas can be obtained using standard techniques such as flexographic printing or inkjet printing. Preferably, the printed areas are obtained via flexographic printing, in which case the film is printed and then shaped into the shape of the open compartments. The compartment is then filled with the detergent composition and a second film is placed over the compartment and sealed to the first film. The print area may be on one side or both sides of the film.

Alternatively, inks or pigments may be added during the manufacture of the film such that all or at least part of the film is colored.

The first and second films may independently include an aversive agent, eg, a bittering agent. Suitable bittering agents include, but are not limited to, naringin, saccharose octaacetate, quinine hydrochloride, denatonium benzoate, or mixtures thereof. Any suitable concentration of aversive agent may be used in the film. Suitable concentrations include, but are not limited to, 1 to 5000 ppm, 100 to 2500 ppm, or 250 to 2000 ppm.

The first and/or second film may further comprise other active substances, which are typically well known to those skilled in the art, including water, plasticizers and surfactants.

Detergent Compositions Detergent compositions may be in the form of free flowing powders, liquids, compressed solids, gels or mixtures thereof.

The detergent composition may be in the form of a free flowing powder. Such free-flowing powders may have an average particle size of 100 micrometers to 1500 micrometers, preferably 100 micrometers to 1000 micrometers, more preferably 100 micrometers to 750 micrometers. Those skilled in the art will recognize standard techniques for measuring particle size. The detergent composition may be a free flowing laundry detergent composition.

The laundry detergent composition may be liquid. In connection with the liquid detergent composition of the present invention, the term "liquid" includes forms such as dispersions, gels, pastes and the like. The liquid composition may contain the gas in an appropriately subdivided form. However, liquid compositions exclude forms that are wholly non-liquid, such as tablets or granules.

The detergent composition may be a liquid laundry detergent composition. The term "liquid laundry detergent composition" means any laundry detergent composition containing a liquid capable of wetting and treating fabrics, such as washing clothes in a domestic washing machine.

The laundry detergent composition is used during the main cleaning process, but can also be used as a pretreatment composition or a dipping composition.

Examples of laundry detergent compositions include fabric detergents, fabric softeners, two-in-one detergents and softeners, pretreatment compositions and the like.

Laundry detergent compositions include bleaches, bleach catalysts, dyes, hue dyes, brighteners, cleaning polymers containing alkoxylated polyamines and polyethyleneimines, soil release polymers, surfactants, solvents, dye transfer inhibitors, chelates. Agents, builders, enzymes, perfumes, capsule-type perfumes, polycarboxylates, rheology modifiers, structuring agents, hydrotropes, pigments and dyes, opacifiers, preservatives, antioxidants, processing aids, cationic polymers Including ingredients such as conditioning polymers, antimicrobial agents, pH trimming agents such as hydroxides and alkanolamines, suds suppressors, and mixtures thereof may be included.

The surfactant may be selected from anionic, cationic, zwitterionic, nonionic, amphoteric or mixtures thereof. Preferably, the fabric care composition comprises anionic, nonionic or mixtures thereof.

The anionic surfactant may be selected from linear alkyl benzene sulfonates, alkyl ethoxylated sulphates, and combinations thereof.

Suitable anionic surfactants useful herein can include any type of conventional anionic surfactant typically used in liquid detergent products. These include alkylbenzene sulfonic acids and their salts, and alkoxylated or non-alkoxylated alkyl sulfate materials.

The nonionic surfactant may be selected from fatty alcohol alkoxylates, oxo synthetic fatty alcohol alkoxylates, Guerbet alcohol alkoxylates, alkylphenol alcohol alkoxylates, or mixtures thereof. Suitable nonionic surfactants for use herein include alcohol alkoxylate nonionic surfactants. The alcohol alkoxylate has the general formula: R ¹ (C _m H _2m O) _n OH (wherein R ¹ is a C ₈ -C ₁₆ alkyl group, m is 2-4, and n is about 2-. Material in the range of 12). In one aspect, R ¹ can be primary or secondary and is an alkyl group containing about 9-15 carbon atoms, or about 10-14 carbon atoms. In one aspect, the alkoxylated fatty alcohol is an ethoxylated material containing an average of about 2-12 ethylene oxide moieties per molecule, or an average of about 3-10 ethylene oxide moieties per molecule.

The shading dyes used in the laundry detergent compositions of the present invention may include polymeric or non-polymeric dyes, pigments, or mixtures thereof. Preferably, the shading dye comprises a polymeric dye, which comprises a chromophore component and a polymeric component. The chromophore component is characterized by absorbing light in the wavelength range of blue, red, violet, violet, or combinations thereof when exposed to light. In one aspect, the chromophore component exhibits an absorption spectrum up to about 520 nanometers to about 640 nanometers in water and/or methanol, and in another aspect, from about 560 nanometers to about 540 nanometers in water and/or methanol. The absorption spectrum at 610 nanometers is shown.

Although any suitable chromophore can be used, the dye chromophore is preferably benzodifuran, methine, triphenylmethane, naphthalimide, pyrazole, naphthoquinone, anthraquinone, azo, oxazine, azine, xanthene, triphenodioxazine. , And phthalocyanine dye chromophores. Mono and diazo dye chromophores are preferred.

The dyestuff may be incorporated into the detergent composition in the form of a crude mixture which is a direct product of the organic synthetic route. Thus, in addition to the dye polymer, there may be mixtures of dye polymers containing small amounts of unreacted starting materials, side reaction products and repeating units of different chain lengths, which are expected to result from any polymerization step.

The laundry detergent composition may include one or more detersive enzymes that provide cleaning performance and/or fabric care benefits. Examples of suitable enzymes include hemicellulase, peroxidase, protease, cellulase, xylanase, lipase, phospholipase, esterase, cutinase, pectinase, keratanase, reductase, oxidase, phenol oxidase, lipoxygenase, ligninase, pullulanase, tannase, pentosanase, malanase, Examples include, but are not limited to, β-glucanase, arabinosidase, hyaluronidase, chondroitinase, laccase, and amylase, or mixtures thereof. A typical combination is a mixture of conventional applicable enzymes such as proteases, lipases, cutinases and/or cellulases with amylase.

The laundry detergent composition of the present invention may include one or more bleaching agents. Suitable bleaches other than bleach catalysts include photobleaches, bleach activators, hydrogen peroxide, hydrogen peroxide sources, preformed peracids, and mixtures thereof.

The composition may include a whitening agent. A preferred brightener is stilbene such as brightener 15. Other suitable brighteners are hydrophobic brighteners, and brightener 49. The brightener may be in micronized particulate form, having a weight average particle size in the range of 3-30 micrometers, or 3-20 micrometers, or 3-10 micrometers. The brightener may be in the alpha or beta crystal form.

The compositions herein may also optionally contain one or more copper, iron, and/or manganese chelating agents. The chelating agent includes 1-hydroxyethanediphosphonic acid (HEDP) and its salt, N,N-dicarboxymethyl-2-aminopentane-1,5-dioic acid and its salt, and 2-phosphonobutane-1,2,4. -Tricarboxylic acids and salts thereof, and any combination thereof.

The compositions of the present invention may also include one or more dye transfer inhibitors. Suitable polymeric dye transfer inhibitors include polyvinylpyrrolidone polymers, polyamine N-oxide polymers, copolymers of N-vinylpyrrolidone and N-vinylimidazole, polyvinyl oxazolidones, and polyvinyl imidazoles, or mixtures thereof. Not limited.

The laundry detergent composition may include one or more polymers. Suitable polymers include polyester stain release polymers such as carboxylate polymers, polyethylene glycol polymers, terephthalate polymers, amine polymers, cellulosic polymers, dye transfer inhibitors, condensation oligomers produced by condensation of imidazole with epichlorohydrin. Dye fixing polymers such as, optionally in a ratio of 1-4-1 hexamethylene diamine derivative polymer, and any combination thereof.

Other suitable cellulosic polymers, the degree of substitution of 0.01 to 0.99 (DS), and DS + or DB is at least 1.00, or DB + 2DS-DS ² is an either at least 1.20 Block distortion factor (DB). The substituted cellulosic polymer may have a degree of substitution (DS) of at least 0.55. The substituted cellulosic polymer may have a degree of block (DB) of at least 0.35. The substituted cellulosic polymer may have a DS+DB of 1.05-2.00. A preferred substituted cellulosic polymer is carboxymethyl cellulose.

Another suitable cellulosic polymer is cation-modified hydroxyethyl cellulose.

Suitable perfumes include perfume microcapsules, polymer-assisted perfume delivery system starch-encapsulated perfume accords including Schiff base perfume/polymer complexes, perfume loaded zeolites, blooming perfume accords, and any combination thereof. Suitable perfume microcapsules are based on melamine formaldehyde and typically include perfume encapsulated by a shell comprising melamine formaldehyde. It may be very suitable for such perfume microcapsules to contain within the shell a cationic material and/or a cationic precursor material such as polyvinylformamide (PVF) and/or cationically modified hydroxyethyl cellulose (catHEC).

Suitable suds suppressors include silicones and/or fatty acids such as stearic acid.

The laundry detergent composition may be colored. The color of the liquid laundry detergent composition can be the same or different from any printed areas on the film of the article. Each compartment of the unit dose article may have a different color. Preferably, the liquid laundry detergent composition comprises an indirect dye having an average degree of alkoxylation of at least 16.

At least one compartment of the unit dose article may include solids. When present, solids may be present at a concentration of at least 5% by weight of the unit dose article.

Methods for Making Unit Dose Articles One of ordinary skill in the art will recognize processes for making the detergent compositions of the present invention. Those of ordinary skill in the art will recognize standard processes and equipment for making the present detergent compositions.

One of ordinary skill in the art will recognize standard techniques for making unit dose articles according to any aspect of the invention. Standard forming processes may be used, including but not limited to thermoforming and vacuum forming techniques.

A preferred method of making a water-soluble unit dose article according to the invention is to mold a first water-soluble film in a mold to form open cavities, fill the cavities with a detergent composition, and lay a second film over the first film. Closing the cavity and sealing the first and second films together, preferably via a solvent seal, preferably the solvent comprises water, and producing a water soluble unit dose article.

The dimensions and values disclosed herein are not to be understood as being strictly limited to the exact numerical values recited. Instead, unless otherwise indicated, each such dimension is intended to mean both the recited value and a functionally equivalent range surrounding that value. For example, a dimension disclosed as "40 mm" is intended to mean "about 40 mm."

Test protocol 1. Strength Test Method for Unit Dose Articles This test method uses an Instron Universal Materials Tester, 825 University Ave., Norwood, MA 02062-2643, for load cell up to 100 kN (kilo Newton) unit dose articles. The method of measuring the intensity of is described. The method measures the overall strength (in Newtons) of a unit dose article by applying pressure to the film and sealing area via compression of the unit dose article. The strength (in Newtons) of a unit dose article is defined as the maximum load that the unit dose article can carry before it breaks. Openings at pressures below 250 N in the sealed area of the unit dose article are reported as poor seals and are not taken into account when measuring the average strength of the unit dose article.

The strength of the unit dose article was measured immediately 1 hour after the production of the unit dose article so that the film/unit dose article has a set time after processing. The method was carried out in an indoor environment at 30%-40% relative humidity (RH) and 20%-23°C. The stored unit dose articles were re-equilibrated to the laboratory environment for 1 hour prior to testing.

FIG. 1 shows a schematic diagram of the basic structure for strength testing of unit dose articles. To measure the strength of the unit dose article, enclose the unit dose article 510 in a plastic degassed bag 500 (150 mm x 124 mm with a seal, 60 micron thickness-for example, Raja grip RGP6B) to prevent rupture of the unit dose article. Prevents contamination of the working environment. After encapsulation in the bag, the unit dose article 510 was centered between the two compression plates 520, 530 of the tester. The sealing width dimension 540 (eg, the minimum dimension in the plane of the defined rectangle that just covers the sealing area, 41 mm in the actual unit dose article tested) is between the compression plates (x direction), Placed the unit dose article 510 in an upright position so that stress was applied to the seal width. For compression, the speed of reducing the distance between plates 520 and 530 is set to 60 mm/min. Ten iterations of each test step are performed and the average strength data for the unit dose article is reported, excluding the sealing failure as described above.

2. Tensile Strain Test and Elastic Modulus Test The water-soluble film characterized or tested by the tensile strain (TS) test tensile strain and elastic modulus (MOD) test elastic modulus (tensile modulus or stress) is It was analyzed as follows. The procedure involves the measurement of tensile strain and the measurement of elastic modulus by ASTM D 882 ("Standard Test Methods for Tensile Properties of Thin Plastic Sheeting"). An Instron Tensile Tester (Model 5544 Tensile Tester or equivalent-Instron Industrial Product, University Avenue 825, Norwood, 02062-2643, MA) was used to collect film data. Each is cut with a reliable cutting tool (eg, JDC Precision Sample Cutting Machine, Model 1-10 from Thwing Albert Instrument Company, Philadelphia, PA, USA) to ensure dimensional stability and reproducibility. A minimum of three specimens were tested in the machine direction (MD) (where applicable), ie, the roll wrap/unwind direction of the water soluble film for each measurement. The water-soluble film was pretreated to the test environmental conditions for a minimum of 48 hours. The test was conducted in a standard laboratory atmosphere at 23 ± 2.0°C and 35 ± 5% relative humidity. A sample of 2.54 cm (1″) wide single film sheet having a thickness of 76.2±3.8 μm (or 3.0±0.15 mils) for making tensile strain and modulus measurements. For the modulus test, the virgin film was tested, and for the tensile strain test, the test film was first pre-soaked in a test detergent according to the protocol described below. The test was carried out by moving to a Ron tensile tester.The tensile tester was prepared according to the manufacturer's instructions, equipped with a 500N load cell and calibrated. Suitable grip and face (rubber coated and width An Instron grip with a model number 2702-032 face of 25 mm, or equivalent, was fitted and the sample was mounted in a tensile tester and stretched at a rate of 1 N/min to give a modulus of elasticity (ie, elasticity). Stress-strain curve gradient in the deformation region and tensile strain at break (i.e., elongation percentage% obtained at film break, i.e., 100% reflects the starting length, and 200% doubled at break). (Reflecting the film) was analyzed to determine the average of a minimum of 3 specimens.

Pre-Film Dipping Protocol For both films intended to be used to form a sealed compartment that encloses a liquid household detergent composition, film samples measured at 11 cm×12 cm were made. A total of 750 mL of household liquid detergent composition intended to be enclosed in a sealed compartment containing test films was required for each test film. The bottom of the clear inert glass receiver was covered with a thin layer of liquid, and the film to be tested was laid on top of the liquid, with air bubbles trapped under the film being gently squeezed toward the sides. The residual liquid is then gently poured onto the top of the film in such a way that the film is completely immersed in the liquid. The film should not leave wrinkles and the film should not be in contact with air bubbles. The film remained in contact with the liquid and was stored under sealed container conditions at 35°C for 6 days and 21°C overnight. A separate glass receiver was used for each test film. The film was then removed from the storage container and excess liquid was removed from the film. A piece of paper was placed on the film laid on top of the stock, and then the film was wiped dry with dry paper. The film was finally pretreated to tensile strain environmental test conditions as described above. Virgin films were used in the tensile strain test when intended for encapsulation of solid household detergent compositions.

3. Method for measuring water volume The water volume was measured using a DVS (dynamic water vapor adsorption) device. The device used was an SPS-DVS from ProUmid (SPSx-1μ with permeability kit-high load model). DVS uses gravimetry for moisture adsorption/desorption measurements and is also fully automated.

The accuracy of the system is ±0.6% for RH (relative humidity) and ±0.3°C at a temperature of 25°C over the range 0-98%. The temperature can range from +5 to +60°C. The microbalance in the device can resolve a mass change of 0.1 μg. Two replicates of each film are measured and the average water volume is reported.

For the specific conditions of the test, it is possible to test 5 films simultaneously, a 6-plate carousel (one plate is used as a reference for the microbalance, so it must remain empty) Was used.

Each dish has an aluminum ring with screws and is designed to secure the film. A piece of film is placed on a pan and gently stretched, then a ring is placed on top to secure the film tight with screws and remove excess film. The film covering the surface of the dish had a diameter of 80 mm.

The temperature was fixed at 20°C. Relative humidity (RH) was set at 35% for 6 hours and then gradually increased to 50% over 5 minutes. RH was maintained at 50% for 12 hours. The total duration of the measurement was 18 hours.

The cycle time (=time between measurements of each dish) was set to 10 hours and the DVS recorded each weight result against time and% Dm (relative mass change relative to the starting weight of the film, ie 10% is , Which reflects a 10% increase in film weight relative to the starting film weight).

The difference between the% Dm value at 50% RH (final value measured at 50% RH) minus the% Dm at 35 RH (final value before reaching 50% RH) gives the water capacity (or 20°C). The% Dm) obtained over a 50% RH cycle during a fixed time of 12 hours was calculated.

The following unit dose articles were prepared and tested for strength of the unit dose articles for each protocol described herein. Example unit dose articles according to the present invention have been made from other than two different films and differ in modulus according to the present invention while comparative unit dose articles outside the scope of the present invention are single film type. It was made from other than.

A multi-compartment water soluble unit dose article with a footprint of 41 mm x 43 mm, a cavity depth of 20.1 mm, and a cavity volume of 25 mL was prepared via thermoforming/vacuum forming. For the dual film example, films B and D were used as sealing films, respectively, while films A and C of the unit dose article were deformed under reduced pressure. A standard detergent composition marketed in England in January 2016 was encapsulated within these unit dose articles in the bottom compartment of the elegant non-living three-in-one water soluble unit dose article product.

Table 1 below details the film compositions used to make the comparative unit dose articles and the example unit dose articles.

Table 2 below details the important physical properties of each film used in the examples.

From Table 3 below, unit dose articles 1 and 2 made of two films differing in elastic modulus according to the scope of the present invention show the strength of the inferior unit dose articles, corresponding comparisons not made of monolithic film. It is clear that both provide good pouch strength compared to Examples 1 and 2.

The dimensions and values disclosed herein are not to be understood as being strictly limited to the exact numerical values recited. Rather, unless otherwise indicated, each such dimension shall mean both the recited value and a functionally equivalent range surrounding that value. For example, a dimension disclosed as "40 mm" shall mean "about 40 mm."

All documents cited herein, including any cross-references or related patents or applications, are hereby incorporated by reference in their entirety, unless expressly excluded or otherwise limited. Incorporated. Citation of any reference is not considered prior art to any invention disclosed or claimed herein, or in combination with it, either independently or with any other reference(s). Admission that no such invention is taught, suggested, or disclosed. In the event that any meaning or definition of a term in this document conflicts with the meaning or definition of the same term in any document incorporated by reference, the meaning or definition assigned to that term in this document shall apply. And

While particular embodiments of the present invention have been illustrated and described, it would be obvious to those skilled in the art that various other changes and modifications can be made without departing from the spirit and scope of the invention. Accordingly, all such changes and modifications that are within the scope of this invention are intended to be covered by the appended claims.

Claims (14)

Use of a unit dose article comprising at least a first water-soluble film, a second water-soluble film, and a detergent composition, the first water-soluble film and the second water-soluble film for enhancing a consumer's detergent administration experience. The water-soluble films are chemically different from each other,
The first water-soluble film has a first tensile elastic modulus, the second water-soluble film has a second tensile elastic modulus, the first tensile elastic modulus is higher than the second tensile elastic modulus, and The difference between the first tensile elastic modulus and the second tensile elastic modulus is 0.5 MPa to 10 MPa,
The first water-soluble film has a first tensile strain at break, the second water-soluble film has a second tensile strain at break, and the first tensile strain at break is the second tensile strain at break. Greater than the strain, and the difference between the first tensile strain at break and the second tensile strain at break is 10% to 1000%,
The first tensile strain at break is 300% to 1600%, and
Use, wherein the second tensile strain at break is 300% to 1200% . The difference between the second tensile modulus and the first tensile modulus, a 1MPa～8MP a, Use according to claim 1. The first tensile modulus, a 1MPa～20MP a, Use according to claim 1 or 2. The second tensile modulus, a 1MPa～15MP a, Use according to any one of claims 1 to 3. Wherein the first water-soluble film comprises a first water-soluble resin, and the second water-soluble film comprises a second water-soluble resin, use of any of claims 1-4. Wherein the first water-soluble resin comprises a blend of poly vinyl alcohol copolymer containing polyvinyl alcohol homopolymer and anionic monomeric units, Use according to claim 5. The second water-soluble resin comprises a blend of poly vinyl alcohol copolymer containing polyvinyl alcohol homopolymer and anionic monomeric units, Use according to claim 5. The anionic monomer unit is vinyl acetic acid, alkyl acrylate, maleic acid, monoalkyl maleate, dialkyl maleate, monomethyl maleate, dimethyl maleate, maleic anhydride, fumaric acid, monoalkyl fumarate, dialkyl fumarate, fumarate. Acid monomethyl, dimethyl fumarate, fumaric acid anhydride, itaconic acid, monomethyl itaconic acid, dimethyl itaconic acid, itaconic anhydride, citraconic acid, monoalkyl citraconic acid, dialkyl citraconic acid, citraconic acid anhydride, mesaconic acid, monoalkyl mesaconic acid , Dialkyl mesaconic acid, mesaconic anhydride, glutaconic acid, monoalkyl glutaconate, dialkyl glutaconate, glutaconic anhydride, vinylsulfonic acid, alkylsulfonic acid, ethylenesulfonic acid, 2-acrylamido-1-methylpropanesulfonic acid, 2- From anionic monomers derived from acrylamido-2-methylpropanesulfonic acid, 2-methylacrylamido-2-methylpropanesulfonic acid, 2-sulfoethyl acrylate, their alkali metal salts, their esters, and combinations thereof. made is selected from the group use according to claim 6 or 7. Wherein the first water-soluble film, and said second water-soluble film, prior to incorporation into the unit dose article, for chromatic independently thickness of 40 micrometers to 100 micro meters, claim 1-8 the use according to any one of the. The first water-soluble film has a first water volume, the second water-soluble film has a second water volume, the first water volume is less than the second water volume, and the first water volume is less than the second water volume. The use according to any one of claims 1 to 10 , wherein the difference in water volume between the water-soluble film and the second water-soluble film is 0.01% to 1 % . Wherein the first water-soluble film has a 1% to 10% water capacity, also the second water-soluble film has 1.5% to 12% water capacity, use according to claim 10. The consumer of the detergent dosing experience, the consumer, and from the storage container to the washing machine, including moving at least one water-soluble unit dose articles, use according to any of claims 1 to 11 .. The storage container is a bag material or hard plate Bed type container of flexible Use according to claim 12. A case where the consumer's detergent administration experience causes premature rupture of the water-soluble unit dose article in the consumer's hand while moving the water-soluble unit dose article from the storage container to the automatic washing machine. 14. The use according to claim 12 or 13, comprising reducing.

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