EP1400460B1 - Emballage hydrosoluble et contenu liquide de celui-ci - Google Patents

Emballage hydrosoluble et contenu liquide de celui-ci Download PDF

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Publication number
EP1400460B1
EP1400460B1 EP03077711A EP03077711A EP1400460B1 EP 1400460 B1 EP1400460 B1 EP 1400460B1 EP 03077711 A EP03077711 A EP 03077711A EP 03077711 A EP03077711 A EP 03077711A EP 1400460 B1 EP1400460 B1 EP 1400460B1
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EP
European Patent Office
Prior art keywords
water soluble
film
package according
solvent
liquid composition
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EP03077711A
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German (de)
English (en)
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EP1400460A1 (fr
Inventor
Neeraj c/o Unilever R&D Vlaardingen Gupta
Harriet F.J c/o Unilever R&D Vlaardingen Hommes
Vidyadhar S. c/o Unilever R&D Vlaardingen Ranade
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Unilever PLC
Unilever NV
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Unilever PLC
Unilever NV
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    • C—CHEMISTRY; METALLURGY
    • C11—ANIMAL OR VEGETABLE OILS, FATS, FATTY SUBSTANCES OR WAXES; FATTY ACIDS THEREFROM; DETERGENTS; CANDLES
    • C11D—DETERGENT COMPOSITIONS; USE OF SINGLE SUBSTANCES AS DETERGENTS; SOAP OR SOAP-MAKING; RESIN SOAPS; RECOVERY OF GLYCEROL
    • C11D3/00—Other compounding ingredients of detergent compositions covered in group C11D1/00
    • C11D3/43—Solvents
    • C—CHEMISTRY; METALLURGY
    • C11—ANIMAL OR VEGETABLE OILS, FATS, FATTY SUBSTANCES OR WAXES; FATTY ACIDS THEREFROM; DETERGENTS; CANDLES
    • C11D—DETERGENT COMPOSITIONS; USE OF SINGLE SUBSTANCES AS DETERGENTS; SOAP OR SOAP-MAKING; RESIN SOAPS; RECOVERY OF GLYCEROL
    • C11D17/00—Detergent materials or soaps characterised by their shape or physical properties
    • C11D17/04—Detergent materials or soaps characterised by their shape or physical properties combined with or containing other objects
    • C11D17/041—Compositions releasably affixed on a substrate or incorporated into a dispensing means
    • C11D17/042—Water soluble or water disintegrable containers or substrates containing cleaning compositions or additives for cleaning compositions
    • C11D17/043—Liquid or thixotropic (gel) compositions

Definitions

  • the present invention relates to a water soluble package for containing a liquid cleaning composition, especially a laundry treatment agent.
  • the invention relates to a water soluble package formed from a water soluble film containing a substantially non-aqueous liquid composition.
  • Water soluble packages are known in the detergent art and generally comprise either vertical form-fill-seal (VFFS) envelopes or thermoformed envelopes.
  • VFFS vertical form-fill-seal
  • a roll of water soluble film is sealed along its edges to form a tube, which tube is heat sealed intermittently along its length to form individual envelopes which are filled with product and heat sealed.
  • the thermoforming process generally involves moulding a first sheet of water soluble film to form one or more recesses adapted to retain a composition, such as for example a solid detergent composition, placing the composition in the at least one recess, placing a second sheet of water soluble material over the first so as to cover the or each recess, and heat sealing the first and second sheets together at least around the recesses so as to form one or more water soluble packages.
  • Solvent-sealed water soluble packages are also known in the art.
  • Cleaning products are traditionally often liquids, viscous or thin, such as known for personal cleaning (bath and shower liquids and shampoos) or for domestic cleaning (hand dish wash and other hard surface cleaning, laundry-cleaning etc.).
  • Other products are solids, such as powders, granules, small capsules (up to 2mm diameter) or more recently tablets, for laundry and machine dish wash, and soap bars for skin cleaning.
  • unit dose products are experiencing an increasing success with consumers, because they eliminate the need for manipulating, and possibly spilling, liquids or powders and simplify the use of a correct dose of the cleaning product for the required purpose. Examples thereof are the laundry and machine dish wash tablets mentioned above.
  • EP-A-518689 discloses a containerisation system for hazardous materials (for example pesticides) comprising a PVOH film enclosing a composition comprising the hazardous material, water, an electrolyte and optional other materials. The electrolyte is added to reduce the solubility of the film to prevent its dissolution by the packaged composition.
  • hazardous materials for example pesticides
  • EP-A-700989 discloses a unit packaged detergent for dish washing, the package comprising a detergent composition wrapped in PVOH film, wherein the film protects the detergent from dissolution until the main wash cycle of the dish washing machine.
  • EP-A-593952 discloses a water soluble sachet of PVOH with two chambers and a treatment agent for washing inside each chamber.
  • EP-A-941939 relates to a water soluble package, which can be PVOH, containing a composition which, when dissolved, produces a solution of known composition.
  • GB-A-2305931 discloses a dissolvable laundry sachet and BE-9700361 relates to a water soluble unit-dosed cleaning agent, especially for cleaning hands.
  • EP-B-157162 relates to a self-supporting film comprising a PVOH matrix having rubbery microdomains dispersed therein.
  • an object of the invention is to find a package formed from a water soluble film and containing a substantially non-aqueous liquid composition, wherein the package has considerably improved compression strength as compared to known packages of the prior art, particularly during prolonged storage periods.
  • the compression strength of the water soluble package can be significantly increased, when the encapsulated non-aqueous liquid composition contains at least two different solvents, being a primary and a secondary solvent, whereby the concentration of the secondary solvent is at least 5% by weight of the primary solvent, and whereby the film contains a plasticizer which is the same compound as the secondary solvent.
  • the compression strength is defined as the strength measured when a package formed from a film and containing a liquid composition is compressed at a uniform rate (e.g. 50 mm/minute) between two metal plates, one of which being connected to a load cell.
  • the load measured (in Newtons) at the moment of bursting is the maximum compression strength of the package.
  • the compression strength may be measured in this way using a Universal Electromechanical Tester, such as Instron ®.
  • the present invention provides a water soluble package formed from a water soluble film containing a substantially non-aqueous liquid composition, said film comprising a plasticizer system and said liquid composition comprising a surfactant, and at least two different solvents, being a primary and a secondary solvent, wherein the liquid composition contains the secondary solvent in an amount of at least 5% by weight of the primary solvent present therein and wherein the main plasticizer in the film is the same chemical as the secondary solvent.
  • the non-aqueous liquid is the non-aqueous liquid
  • the substantially non-aqueous liquid composition effectively provides a cleaning function when released into the wash liquor.
  • it is a laundry treatment agent.
  • the amount of this liquid composition in the package i.e. the unit dose volume may for example be from 10 ml to 100 ml, e.g. from 12.5 ml to 75 ml, preferably from 15 ml to 60 ml, more preferably from 20 ml to 55 ml.
  • substantially non-aqueous it is meant that the amount of water in the liquid composition is below the level at which the package would dissolve through contact with its contents.
  • the liquid composition comprises no more than 20%, more preferably no more that 15%, still more preferably no more than 10%, by weight of water.
  • the viscosity of the liquid composition is suitably at least 25 mPaS but no more than 10,000 mPaS.
  • the liquid composition of the invention contains at least two different solvents, being a primary and a secondary solvent.
  • Suitable primary solvents include water, alcohols, ethers, polyethers, polyols, alkylamines, alkanol amines and fatty amines, alkyl (or fatty) amides and mono-and di- N-alkyl substituted derivatives thereof, alkyl (or fatty) carboxylic acid lower alkyl esters, ketones, aldehydes, glycerides, and nonionic surfactants such as alkoxylated alcohols.
  • Preferred primary solvents are selected from the group consisting of pentanediols, butanediols, propanediols, such as 1,3-propane diol, alkanol amines, di-alkyl ethers, polyethylene glycols, alkyl ketones (such as acetone) and glyceryl trialkylcarboxylates (such as glyceryl tri-acetate), glycerol, and sorbitol. Even more preferred primary solvents are butanediols, and propanediols. Most preferred primary solvent for use in the composition of the present invention is monopropylene glycol.
  • the primary solvent is present in the liquid composition in an amount of at least 10% by weight, more preferably from 15% to 50% by weight.
  • the water soluble film of the invention incorporates at least one plasticizer which is the same compound as the secondary solvent in the liquid composition.
  • This plasticizer needs to be the main plasticizer in the film: it is desirably present in the film at a concentration of at least 10% by weight.
  • the secondary solvent is present in the liquid composition in an amount of at least 5%, preferably at least 10%, by weight of the primary solvent present therein.
  • the water soluble film may be formed from a variety of different materials.
  • the preferred type of plasticizer will depend on the nature of the film in question. Preferred plasticizers are recited in more detail below.
  • the plasticizer system in the film influences the way the polymer chains usually present in the film react to external factors such as compression and extensional forces, temperature and mechanical shock by controlling the way that the chains distort / realign as a consequences of these intrusions and their propensity to revert or recover to their former state.
  • the key feature of preferred plasticisers is that they are highly compatible with the film, and are normally hydrophilic in nature.
  • the envelope forming the package is preferably formed by horizontal, vertical or rotary form-film-seal techniques.
  • the film effectively comprises a water soluble polymer.
  • water soluble polymer refers to a polymer which dissolves and/or dispenses completely in water within 30 minutes with agitation, e.g. by means of hand, stick or other stirrer or under the action of a mechanical washing machine and at a relevant temperature.
  • a "relevant temperature” is one at which the consumer will need to dissolve or disperse the polymer component at the beginning of, or during a cleaning process.
  • a polymer is to be regarded as dissolving or dispersing at a "relevant temperature” if it does so under the aforementioned conditions at a temperature anywhere in the range of from 20°C to 60°C.
  • Preferred water soluble polymers are those capable of being cast into a film or solid mass and may for example as described in Davidson and Sittig, Water-Soluble Resins, Van Nostrand Reinhold Company, New York (1968).
  • the water-soluble polymer should have proper characteristics, such as strength and heat-sealability, to permit machine handling during the processes of making the water soluble package.
  • Preferred water-soluble resins include polyvinyl alcohol and copolymers thereof, cellulose ethers, polyethylene oxide, polyvinylpyrrolidone, polymaleic anhydride and copolymers thereof , hydroxyethylcellulose, methylcellulose, acrylamide and copolymers thereof, polyethyleneimine, ethyl hydroxyethylcellulose, ethyl methylcellulose, hydroxyethyl methylcellulose.
  • co-polymers can be made of 2 or more types of monomers.
  • Water-soluble, polyvinyl alcohol film-forming resins are most preferred for use in the package of the present invention.
  • Polyvinyl alcohols (PVA) preferred for use herein have an average molecular weight anywhere between 1,000 and 100,000, preferably between 5,000 and 250,000, for example between 15,000 and 150,000.
  • Hydrolysis, or alcoholysis is defined as the percent completion of the reaction where acetate groups on the resin are substituted with hydroxyl, -OH, groups.
  • a hydrolysis range of from 60-99% of polyvinyl alcohol film-forming resin is preferred, while a more preferred range of hydrolysis is from about 70-90% for water-soluble, polyvinyl alcohol film-forming resins. The most preferred range of hydrolysis is 80-89%.
  • polyvinyl alcohol includes polyvinyl acetate compounds with levels of hydroloysis disclosed herein.
  • the water-soluble resin film should be formulated so as to substantially completely dissolve in 50°C. water with agitation within about thirty minutes, preferably within about 15 minutes in 50°C. water with agitation, and most preferably within about 5 minutes in 50°C. water with agitation.
  • PVA films for use in a package according to the invention are commercially available and described, for example, in EP-B- 291,198.
  • PVA films for use in a package according to the invention can be made by the copolymerisation of vinyl acetate and a carboxylate-containing monomer (for example acrylic, maleic or itaconic acid or acid ester), followed by partial (for example up to about 90%) hydrolysis with sodium hydroxide.
  • a carboxylate-containing monomer for example acrylic, maleic or itaconic acid or acid ester
  • Suitable water soluble films can also be made from blends of two or more polymers/copolymers as mentioned above, and having different compositions or molecular weights.
  • plasticizers suitable for use with PVA-based films have -OH groups in common with the ⁇ CH2-CH(OH)-CH2-CH(OH)-polymer chain of the film polymer.
  • Their mode of functionality is to introduce short chain hydrogen bonding with the chain hydroxyl groups and thus weaken adjacent chain interactions which inhibits swelling of the aggregate polymer mass - the first stage of film dissolution.
  • Water itself is a suitable plasticizer for any of the films recited herein.
  • Preferred main plasticizers are selected from the group consisting of pentane diols, butane diols, propane diols, glycerol, trimethylolpropane, sorbitol, diethylene glycol, triethylene glycol, and dipropylene glycol.
  • the most preferred plasticizer for use as a main plasticizer in the film of the invention is glycerol.
  • this group of preferred main plasticizer compounds is equally preferred for use as a secondary solvent in the liquid composition, and that glycerol is not only the most preferred main plasticizer but also the most preferred type of secondary solvent. It is also noted that the primary and secondary solvents are different chemicals.
  • the total amount of plasticizer in the film may vary considerably according to the film type and plasticizer type. It could for example be in the range of from 0.1% to 50%, e.g. 10% to 45%, such as 15% to 40% by weight.
  • the plasticizer system is desirably present in a total amount of above 15% by weight.
  • Water soluble films based on PVA can be made according to any of the horizontal form-fill-seal methods described in any of WO-A-00/55044, WO-A-00/55045, WO-A-00/55046, WO-A-00/55068, WO-A-00/55069 and WO-A-00/55415.
  • thermoforming process is now described where a number of packages according to the invention are produced from two sheets of water soluble material. Recesses are formed in one of the film sheets using a forming die having a plurality of cavities with dimensions corresponding generally to the dimensions of the packages to be produced. Further, a single heating plate is used for thermoforming the film for all the cavities, and in the same way a single sealing plate is applied.
  • a first sheet of polyvinyl alcohol film is drawn over a forming die so that the film is placed over the plurality of forming cavities in the die.
  • each cavity is generally dome shape having a round edge, the edges of the cavities further being rounded to remove any sharp edges which might damage the film during the forming or sealing steps of the process.
  • Each cavity further includes a raised surrounding flange.
  • a heating plate is used to heat the film, which plate is positioned to superpose the forming die.
  • a vacuum of 0.5 bar is pulled through the preheating plate to ensure intimate contact between the film and the pre-heating plate, this intimate contact ensuring that the film is heated evenly and uniformly (the extent of the vacuum is dependant of the thermoforming conditions and the type of film used, however in the present context a vacuum of less than 0.6 bar was found suitable).
  • Non-uniform heating results in a formed package having weak spots. in addition to the vacuum, it is possible to blow air against the film to force it into intimate contact with the preheating plate.
  • thermoformed film is moulded into the cavities blowing the film off the heating plate and/or by sucking the film into the cavities thus forming a plurality of recesses in the film which, once formed, are retained in their thermoformed orientation by the application of a vacuum through the walls of the cavities. This vacuum is maintained at least until the packages are sealed.
  • a liquid composition according to the invention is added to each of the recesses.
  • a second sheet of polyvinyl alcohol film is then superposed on the first sheet across the filled recesses and heat-sealed thereto using a sealing plate.
  • the raised flanges surrounding each cavity ensure that the films are sealed together along the flange to form a continuous seal.
  • the rounded edge of each cavity is at least partly formed by a resiliently deformable material, such as for example silicone rubber. This results in reduced force being applied at the inner edge of the sealing flange to avoid heat/pressure damage to the film.
  • the packages formed are separated from the web of sheet film using cutting means. At this stage it is possible to release the vacuum on the die, and eject the formed packages from the forming die. In this way the packages are formed, filled and sealed while nesting in the forming die. In addition they may be cut while in the forming die as well.
  • VFFS vertical form-fill-seal
  • a rotary form-fill-seal technique may be used.
  • forming, filling and sealing of water soluble packages is carried out using a rotary drum that has forming cavities or recesses on its curved surface.
  • solvent sealing instead of heat sealing as described above, solvent sealing, ultrasonic sealing or any other type of sealing known in the art could be applied for producing the package of the present invention.
  • solvent sealing is used and the film contains PVA, an aqueous solution is preferably used as a solvent.
  • the surfactant present in the liquid composition may be selected from nonionic, anionic, cationic and ampholytic detergent surfactants. These may be in liquid form or as solid dissolved or dispersed in the substantially non-aqueous liquid composition.
  • Nonionic detergent surfactants are well-known in the art. They normally consist of a water-solubilizing polyalkoxylene or a mono- or d-alkanolamide group in chemical combination with an organic hydrophobic group derived, for example, from alkylphenols in which the alkyl group contains from about 6 to about 12 carbon atoms, dialkylphenols in which primary, secondary or tertiary aliphatic alcohols (or alkyl-capped derivatives thereof), preferably having from 8 to 20 carbon atoms, monocarboxylic acids having from 10 to about 24 carbon atoms in the alkyl group and polyoxypropylene.
  • alkylphenols in which the alkyl group contains from about 6 to about 12 carbon atoms
  • dialkylphenols in which primary, secondary or tertiary aliphatic alcohols (or alkyl-capped derivatives thereof), preferably having from 8 to 20 carbon atoms
  • monocarboxylic acids having from 10 to about 24 carbon atoms in the al
  • fatty acid mono- and dialkanolamides in which the alkyl group of the fatty acidradical contains from 10 to about 20 carbon atoms and the alkyloyl group having from 1 to 3 carbon atoms.
  • the alkyl group of the fatty acidradical contains from 10 to about 20 carbon atoms and the alkyloyl group having from 1 to 3 carbon atoms.
  • the polyalkoxylene moiety preferably consists of from 2 to 20 groups of ethylene oxide or of ethylene oxide and propylene oxide groups.
  • particularly preferred are those described in European specification EP-A-225,654.
  • ethoxylated nonionics which are the condensation products of fatty alcohols with from 9 to 15 carbon atoms condensed with from 3 to 11 moles of ethylene oxide.
  • condensation products of C 11-13 alcohols with (say) 3 or 7 moles of ethylene oxide may be used as the sole nonionic surfactants or in combination with those of the described in the last-mentioned European specification.
  • These nonionics may also be suitably used as primary solvent material.
  • liquid compositions of the invention may also comprises an anionic surfactant.
  • anionic surfactants are the linear alkyl benzene sulfonate (LAS) materials. Such surfactants and their preparation are described for example in U.S. Patents 2,220,099 and 2,477,383, incorporated herein by reference. Particularly preferred are the sodium, potassium and mono-, di- or tri-ethanolammonium linear straight chain alkylbenzene sulfonates in which the average number of carbon atoms in the alkyl group is from about 11 to 14.
  • Monoethanol ammonium salt of C1 1-C14, e.g., C12, LAS is especially preferred.
  • Preferred anionic surfactants include the alkyl sulfate surfactants hereof being water soluble salts or acids of the formula ROSO3M wherein R preferably is a C10-C24 hydrocarbyl, preferably an alkyl or hydroxyalkyl having a C10-C18 alkyl component, more preferably a C12-C15 alkyl or hydroxyalkyl, and M is H or a cation, e.g., an alkali metal cation (e.g. sodium, potassium, lithium), or ammonium or substituted ammonium, especially mono-di-, or tri-ethanolammonium.
  • R preferably is a C10-C24 hydrocarbyl, preferably an alkyl or hydroxyalkyl having a C10-C18 alkyl component, more preferably a C12-C15 alkyl or hydroxyalkyl
  • Preferred anionic surfactants include alkyl alkoxylated sulfate surfactants hereof being water soluble salts or acids of the formula RO(A) mSO3M wherein R is an unsubstituted C10-C24 alkyl or hydroxyalkyl group having a C10-C24 alkyl component, preferably a C12-C18 alkyl or hydroxyalkyl, more preferably C12-C15 alkyl or hydroxyalkyl, A is an ethoxy or propoxy unit, m is greater than zero, typically between about 0.5 and about 6, more preferably C12-C15 alkyl or hydroxyalkyl, A is an ethoxy or propoxy unit, m is greater than zero, typically between about 0.5 and about 6, more preferably between about 0.5 and about 3, and M is H or a cation which can be, for example, a metal cation (e.g., sodium, potassium, lithium, calcium, magnesium, etc.), ammonium or substituted-am
  • alkyl ethoxylated sulfates as well as alkyl propoxylated sulfates are contemplated herein.
  • substituted ammonium cations include quaternary ammonium cations such as tetra methyl-ammonium and dimethyl piperdinium cations
  • Exemplary surfactants are C12-C15 alkyl polyethoxylate (1.0) sulfate (C12-C15E(1.0)M), C12-C15 alkyl polyethoxylate (2.25) sulfate (C12-C15E(2.25)M), C12-C15 alkyl polyethoxylate (3.0) sulfate (C12-C15E(3.0)M), and C12-C15 alkyl polyethoxylate (4.0) sulfate (C12-C15E(4.0)M), wherein M is conveniently selected from sodium, potassium and mono- di- or tri-ethanolammonium.
  • alkyl ester sulfonate surfactants including linear esters of C8-C20 carboxylic acids (i.e., fatty acids) which are sulfonated with gaseous SO3 according to "The Journal of the American Oil Chemists Society", 52 (1975), pp. 323-329.
  • Suitable starting materials would include natural fatty substances as derived from tallow, palm oil, etc.
  • the preferred alkyl ester sulfonate surfactant comprise alkyl ester sulfonate surfactants of the structural formula: wherein R3 is a C8-C20 hydrocarbyl, preferably an alkyl, or combination thereof, R4 is a C1-C6 hydrocarbyl, preferably an alkyl, or combination thereof, and M is a cation which forms a water soluble salt with the alkyl ester sulfonate.
  • Suitable salt-forming cations include metals such as sodium, potassium, and lithium, and substituted or unsubstituted ammonium cations such as mono-, di-, or tri-ethanolammonium.
  • R3 is C10-C16 alkyl
  • R4 is methyl, ethyl or isopropyl.
  • the methyl ester sulfonates wherein R3 is C10 C16 alkyl.
  • anionic surfactants useful for detersive purposes may also be included in the laundry detergent compositions of the present invention.
  • salts for example, sodium, potassium, ammonium, and substituted ammonium salts (such as mono-, di- and triethanolamine salts) of soap, C9-C20 linear alkylbenzenesulfonates, C8- C22 primary of secondary alkanesulfonates, C8-C24 olefinsulfonates, sulfonated polycarboxylic acids prepared by sulfonation of the pyrolyzed product of alkaline earth metal citrates, e.g., as described in British patent specification No.
  • substituted ammonium salts such as mono-, di- and triethanolamine salts
  • alkylpolyglycolethersulfates (containing up to 10 moles of ethylene oxide); alkyl glycerol sulfonates, fatty acyl glycerol sulfonates, fatty oleyl glycerol sulfates, alkyl phenol ethylene oxide ether sulfates, paraffin sulfonates, alkyl phosphates, isethionates such as the acyl isethionates, N-acyl taurates, alkyl succinamates and sulfosuccinates, monoesters of sulfosuccinates (especially saturated and unsaturated C12-C18 monoesters) and diesters of sulfosuccinates (especially saturated and unsaturated C6-C12 diesters), sulfates of alkylpolysaccharides such as the sulfates of alkylpolyglucoside
  • liquid compositions of the present invention typically comprise from about 1% to about 40%, preferably from about 10% to about 25% by weight of such anionic surfactants.
  • anionic surfactants may be incorporated in free acid and/or neutralised form.
  • the liquid composition of the invention may also comprise fatty acids as anionic surfactant component.
  • fatty acids as anionic surfactant component.
  • fatty adds suitable for use in the present invention include pure or hardened fatty acids derived from palmitoleic, safflower, sunflower, soybean, oleic, linoleic, linolenic, ricinoleic, rapeseed oil or mixtures thereof. Mixtures of saturated and unsaturated fatty acids can also be used herein.
  • fatty acid will be present in the liquid detergent composition primarily in the form of a soap.
  • Suitable cations include, sodium, potassium, ammonium, monoethanol ammonium, diethanol ammonium, triethanol ammonium, tetraalkyl ammonium, e.g., tetra methyl ammonium up to tetradecyl ammonium etc. cations.
  • the amount of fatty acid will vary depending on the particular characteristics desired in the final liquid composition of the invention.
  • the level of the fatty acid mixture is suitably from 0. 1 % to 30%, preferably from 0.5% to 25%, more preferably from 10-20% by weight of the detergent composition.
  • the substantially non-aqueous liquid cleaning composition may further comprise one or more ingredients selected from builders, polymers, fluorescers, enzymes, silicone foam control agents, perfumes, dyes, bleaches and preservatives. Some of these materials will be solids which are insoluble in the substantially non-aqueous liquid medium. In that case, they will be dispersed in the substantially non-aqueous liquid medium and may be deflocculated by means of one or more acidic components such as selected from inorganic acids, anionic surfactant acid precursors and Lewis acids, as disclosed in EP-A-266,199.
  • the water soluble film may further comprise the following minor ingredients: anti-blocking agents, such as silica, fillers (e.g. starch and talc), colourants, release agents and surfactants.
  • anti-blocking agents such as silica
  • fillers e.g. starch and talc
  • colourants e.g. starch and talc
  • release agents e.g. surfactants
  • composition no The following non-aqueous liquid detergent compositions were prepared: composition no. A 1 Ingredient: nonionic surfactant 20% 20% anionic surfactant 37% 37% ethanol amine 10% 10% monopropylene glycol 23% 17% glycerol - 6% polymers 1% 1% phosphonate 1% 1% enzymes 1% 1% colourants, brighteners, perfume 1% 1% water balance to 100% balance to 100%
  • Both non-aqueous liquid compositions were encapsulated in a PVA-based water soluble film containing a plasticizer system and including glycerol, as the main plasticizer ingredient, at a level of 15% by weight of the film.

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Claims (12)

  1. Emballage soluble dans l'eau formé d'un film soluble dans l'eau contenant une composition liquide sensiblement non aqueuse, ledit film comprenant un système de plastifiant et ladite composition liquide comprenant un agent tensioactif, et au moins deux solvants différents qui sont un solvant primaire et un solvant secondaire, caractérisé en ce que la composition liquide contient le solvant secondaire en une quantité d'au moins 5 % en poids du solvant primaire qui y est présent et dans lequel le plastifiant principal dans le film est le même produit chimique que le solvant secondaire.
  2. Emballage soluble dans l'eau selon la revendication 1, dans lequel le solvant primaire est choisi dans le groupe consistant en l'eau, les butane diols, les pentane diols, les propane diols, les alcanolamines, les dialkyl éthers, les polyéthylène glycols, les alkyl cétones, les trialkyl carboxylates de glycéryle, le monopropylène glycol, le sorbitol et les agents tensioactifs non ioniques.
  3. Emballage soluble dans l'eau selon la revendication 2, dans lequel le solvant primaire est choisi dans le groupe consistant en les butane diols et les propane diols.
  4. Emballage soluble dans l'eau selon la revendication 3, dans lequel le solvant primaire est le monopropylène glycol.
  5. Emballage soluble dans l'eau selon l'une quelconque des revendications 1 à 3, dans lequel le solvant primaire est présent dans la composition liquide en une quantité d'au moins 10 % en poids, de préférence de 15 à 50 % en poids.
  6. Emballage soluble dans l'eau selon l'une quelconque des revendications 1 à 5, dans lequel le plastifiant principal est choisi dans le groupe consistant en le glycérol, les pentane diols, les butane diols; les propane diols, le triméthylolpropane, le sorbitol, le diéthylène glycol, le triéthylène glycol et le dipropylène glycol.
  7. Emballage soluble dans l'eau selon la revendication 6, dans lequel le plastifiant principal est le glycérol.
  8. Emballage soluble dans l'eau selon l'une quelconque des revendications 1 à 7, dans lequel la composition liquide contient le solvant secondaire en une quantité d'au moins 10 % en poids du solvant primaire qui y est présent.
  9. Emballage soluble dans l'eau selon l'une quelconque des revendications 1 à 8, dans lequel le film soluble dans l'eau comprend les résines de polyalcool vinylique filmogènes.
  10. Emballage soluble dans l'eau selon l'une quelconque des revendications 1 à 9, dans lequel l'emballage est fabriqué par un procédé de thermoformage utilisant un thermoscellage.
  11. Emballage soluble dans l'eau selon l'une quelconque des revendications 1 à 9, dans lequel l'emballage est fabriqué par un procédé de thermoformage utilisant un scellage par solvant.
  12. Emballage soluble dans l'eau selon l'une quelconque des revendications 1 à 11, dans lequel la composition liquide est un agent de traitement lessiviel.
EP03077711A 2002-09-17 2003-09-01 Emballage hydrosoluble et contenu liquide de celui-ci Revoked EP1400460B1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP03077711A EP1400460B1 (fr) 2002-09-17 2003-09-01 Emballage hydrosoluble et contenu liquide de celui-ci

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
EP02078888 2002-09-17
EP02078888 2002-09-17
EP03077711A EP1400460B1 (fr) 2002-09-17 2003-09-01 Emballage hydrosoluble et contenu liquide de celui-ci

Publications (2)

Publication Number Publication Date
EP1400460A1 EP1400460A1 (fr) 2004-03-24
EP1400460B1 true EP1400460B1 (fr) 2004-11-17

Family

ID=33483878

Family Applications (1)

Application Number Title Priority Date Filing Date
EP03077711A Revoked EP1400460B1 (fr) 2002-09-17 2003-09-01 Emballage hydrosoluble et contenu liquide de celui-ci

Country Status (4)

Country Link
EP (1) EP1400460B1 (fr)
AT (1) ATE282565T1 (fr)
DE (1) DE60300161T2 (fr)
ES (1) ES2230529T3 (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US8242069B2 (en) 2005-06-08 2012-08-14 Firmenich Sa Near anhydrous consumer products comprising fragranced aminoplast capsules
EP1666579B2 (fr) † 2004-11-22 2012-11-28 The Procter & Gamble Company Poche contenant du liquide soluble dans l'eau

Families Citing this family (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2821474A1 (fr) * 2011-01-12 2015-01-07 The Procter and Gamble Company Procédé de contrôle de la plastification d'un film hydrosoluble
WO2016061069A2 (fr) 2014-10-13 2016-04-21 Monosol, Llc Film à base de polyvinyle et d'alcool soluble dans l'eau, procédés associés et articles associés
CA2962807C (fr) * 2014-10-13 2021-08-31 The Procter & Gamble Company Objets comprenant un film, soluble dans l'eau, de poly(alcool vinylique) presentant un melange plastifiant et procedes associes
JP6549224B2 (ja) 2014-10-13 2019-07-24 ザ プロクター アンド ギャンブル カンパニーＴｈｅ Ｐｒｏｃｔｅｒ ＆ Ｇａｍｂｌｅ Ｃｏｍｐａｎｙ 水溶性ポリビニルアルコールブレンドフィルムを含む物品、及び関連する方法
TWI677525B (zh) 2014-10-13 2019-11-21 美商摩諾索公司 水溶性聚乙烯醇摻合物膜、相關方法及相關物品
TWI689547B (zh) 2014-10-13 2020-04-01 美商摩諾索公司 具有塑化劑摻合物的水溶性聚乙烯醇膜、相關方法及相關物品
CN107922646B (zh) * 2015-09-11 2021-08-17 三菱化学株式会社 液体洗涤剂包装用水溶性薄膜及液体洗涤剂包装体
ES2743710T3 (es) * 2016-02-05 2020-02-20 Procter & Gamble Artículo de dosis unitaria soluble en agua
EP3202878B1 (fr) * 2016-02-05 2020-05-13 The Procter and Gamble Company Article de dose unitaire soluble dans l'eau
AU2019262763B2 (en) 2018-05-02 2024-06-13 Monosol, Llc Water-soluble polyvinyl alcohol blend film, related methods, and related articles
CN118317908A (zh) * 2021-11-30 2024-07-09 爱赛璐株式会社 液体洗涤剂的包装胶囊用水溶性膜和液体洗涤剂包装胶囊

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5861370A (en) * 1996-03-22 1999-01-19 The Procter & Gamble Company Concentrated, stable, premix for forming fabric softening composition
CA2269293C (fr) * 1996-10-21 2003-07-15 The Procter & Gamble Company Composition d'assouplissant de textile concentree
CA2409923A1 (fr) * 2000-05-24 2001-11-29 The Procter & Gamble Company Composition assouplissante comprenant un agent de neutralisation des mauvaises odeurs
EP1292664A2 (fr) * 2000-06-20 2003-03-19 The Procter & Gamble Company Composition multiphase d'entretien des textiles offrant de multiples avantages pour l'entretien des textiles
GB2369094A (en) * 2000-11-17 2002-05-22 Procter & Gamble Packaging assembly for sheets of water-soluble sachets
US6946501B2 (en) * 2001-01-31 2005-09-20 The Procter & Gamble Company Rapidly dissolvable polymer films and articles made therefrom
GB0104979D0 (en) * 2001-02-28 2001-04-18 Unilever Plc Unit dose cleaning product

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1666579B2 (fr) † 2004-11-22 2012-11-28 The Procter & Gamble Company Poche contenant du liquide soluble dans l'eau
US8242069B2 (en) 2005-06-08 2012-08-14 Firmenich Sa Near anhydrous consumer products comprising fragranced aminoplast capsules

Also Published As

Publication number Publication date
ES2230529T3 (es) 2005-05-01
ATE282565T1 (de) 2004-12-15
EP1400460A1 (fr) 2004-03-24
DE60300161T2 (de) 2005-04-14
DE60300161D1 (de) 2004-12-23

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