EP3649058B1 - Water-soluble package - Google Patents
Water-soluble package Download PDFInfo
- Publication number
- EP3649058B1 EP3649058B1 EP18734251.4A EP18734251A EP3649058B1 EP 3649058 B1 EP3649058 B1 EP 3649058B1 EP 18734251 A EP18734251 A EP 18734251A EP 3649058 B1 EP3649058 B1 EP 3649058B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- water
- soluble
- package
- substrate
- surfactant
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
- 239000000758 substrate Substances 0.000 claims description 124
- 239000000203 mixture Substances 0.000 claims description 105
- 239000000463 material Substances 0.000 claims description 54
- 239000004094 surface-active agent Substances 0.000 claims description 30
- 239000003945 anionic surfactant Substances 0.000 claims description 28
- 229920002451 polyvinyl alcohol Polymers 0.000 claims description 24
- 239000004372 Polyvinyl alcohol Substances 0.000 claims description 22
- 239000004744 fabric Substances 0.000 claims description 22
- 235000019422 polyvinyl alcohol Nutrition 0.000 claims description 22
- PEDCQBHIVMGVHV-UHFFFAOYSA-N Glycerine Chemical compound OCC(O)CO PEDCQBHIVMGVHV-UHFFFAOYSA-N 0.000 claims description 16
- IAYPIBMASNFSPL-UHFFFAOYSA-N Ethylene oxide Chemical group C1CO1 IAYPIBMASNFSPL-UHFFFAOYSA-N 0.000 claims description 13
- 238000004851 dishwashing Methods 0.000 claims description 12
- 239000002736 nonionic surfactant Substances 0.000 claims description 11
- 239000003599 detergent Substances 0.000 claims description 10
- -1 trimethylolpropame Substances 0.000 claims description 10
- DGAQECJNVWCQMB-PUAWFVPOSA-M Ilexoside XXIX Chemical group C[C@@H]1CC[C@@]2(CC[C@@]3(C(=CC[C@H]4[C@]3(CC[C@@H]5[C@@]4(CC[C@@H](C5(C)C)OS(=O)(=O)[O-])C)C)[C@@H]2[C@]1(C)O)C)C(=O)O[C@H]6[C@@H]([C@H]([C@@H]([C@H](O6)CO)O)O)O.[Na+] DGAQECJNVWCQMB-PUAWFVPOSA-M 0.000 claims description 9
- 229920002689 polyvinyl acetate Polymers 0.000 claims description 9
- 239000011118 polyvinyl acetate Substances 0.000 claims description 9
- 239000011734 sodium Substances 0.000 claims description 9
- 229910052708 sodium Inorganic materials 0.000 claims description 9
- 235000011187 glycerol Nutrition 0.000 claims description 7
- 238000004900 laundering Methods 0.000 claims description 7
- 239000004753 textile Substances 0.000 claims description 7
- DNIAPMSPPWPWGF-UHFFFAOYSA-N Propylene glycol Chemical compound CC(O)CO DNIAPMSPPWPWGF-UHFFFAOYSA-N 0.000 claims description 6
- 239000004014 plasticizer Substances 0.000 claims description 6
- 229920001223 polyethylene glycol Polymers 0.000 claims description 5
- 239000000843 powder Substances 0.000 claims description 5
- QTDIEDOANJISNP-UHFFFAOYSA-N 2-dodecoxyethyl hydrogen sulfate Chemical compound CCCCCCCCCCCCOCCOS(O)(=O)=O QTDIEDOANJISNP-UHFFFAOYSA-N 0.000 claims description 4
- QAOWNCQODCNURD-UHFFFAOYSA-L Sulfate Chemical compound [O-]S([O-])(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-L 0.000 claims description 4
- 230000007062 hydrolysis Effects 0.000 claims description 4
- 238000006460 hydrolysis reaction Methods 0.000 claims description 4
- 239000001866 hydroxypropyl methyl cellulose Substances 0.000 claims description 4
- 229920003088 hydroxypropyl methyl cellulose Polymers 0.000 claims description 4
- 235000010979 hydroxypropyl methyl cellulose Nutrition 0.000 claims description 4
- UFVKGYZPFZQRLF-UHFFFAOYSA-N hydroxypropyl methyl cellulose Chemical compound OC1C(O)C(OC)OC(CO)C1OC1C(O)C(O)C(OC2C(C(O)C(OC3C(C(O)C(O)C(CO)O3)O)C(CO)O2)O)C(CO)O1 UFVKGYZPFZQRLF-UHFFFAOYSA-N 0.000 claims description 4
- BDHFUVZGWQCTTF-UHFFFAOYSA-M sulfonate Chemical compound [O-]S(=O)=O BDHFUVZGWQCTTF-UHFFFAOYSA-M 0.000 claims description 4
- 229920002134 Carboxymethyl cellulose Polymers 0.000 claims description 3
- 239000001768 carboxy methyl cellulose Substances 0.000 claims description 3
- 235000010948 carboxy methyl cellulose Nutrition 0.000 claims description 3
- 239000008112 carboxymethyl-cellulose Substances 0.000 claims description 3
- 229940105329 carboxymethylcellulose Drugs 0.000 claims description 3
- 229910021653 sulphate ion Inorganic materials 0.000 claims description 3
- JTQNABJBQQIKKE-UHFFFAOYSA-N 2-(2-hydroxyethoxy)ethanol;methanediol Chemical compound OCO.OCCOCCO JTQNABJBQQIKKE-UHFFFAOYSA-N 0.000 claims description 2
- FBPFZTCFMRRESA-FSIIMWSLSA-N D-Glucitol Natural products OC[C@H](O)[C@H](O)[C@@H](O)[C@H](O)CO FBPFZTCFMRRESA-FSIIMWSLSA-N 0.000 claims description 2
- FBPFZTCFMRRESA-JGWLITMVSA-N D-glucitol Chemical compound OC[C@H](O)[C@@H](O)[C@H](O)[C@H](O)CO FBPFZTCFMRRESA-JGWLITMVSA-N 0.000 claims description 2
- 239000004721 Polyphenylene oxide Substances 0.000 claims description 2
- UWHCKJMYHZGTIT-UHFFFAOYSA-N Tetraethylene glycol, Natural products OCCOCCOCCOCCO UWHCKJMYHZGTIT-UHFFFAOYSA-N 0.000 claims description 2
- 239000003093 cationic surfactant Substances 0.000 claims description 2
- 229940105990 diglycerin Drugs 0.000 claims description 2
- GPLRAVKSCUXZTP-UHFFFAOYSA-N diglycerol Chemical compound OCC(O)COCC(O)CO GPLRAVKSCUXZTP-UHFFFAOYSA-N 0.000 claims description 2
- 150000002169 ethanolamines Chemical class 0.000 claims description 2
- RLMXGBGAZRVYIX-UHFFFAOYSA-N hexane-1,2,3,6-tetrol Chemical compound OCCCC(O)C(O)CO RLMXGBGAZRVYIX-UHFFFAOYSA-N 0.000 claims description 2
- SLCVBVWXLSEKPL-UHFFFAOYSA-N neopentyl glycol Chemical compound OCC(C)(C)CO SLCVBVWXLSEKPL-UHFFFAOYSA-N 0.000 claims description 2
- 229920000570 polyether Polymers 0.000 claims description 2
- 229920005862 polyol Polymers 0.000 claims description 2
- 150000003077 polyols Chemical class 0.000 claims description 2
- 239000000600 sorbitol Substances 0.000 claims description 2
- 235000010356 sorbitol Nutrition 0.000 claims description 2
- ZIBGPFATKBEMQZ-UHFFFAOYSA-N triethylene glycol Chemical compound OCCOCCOCCO ZIBGPFATKBEMQZ-UHFFFAOYSA-N 0.000 claims description 2
- 239000002280 amphoteric surfactant Substances 0.000 claims 1
- 238000000034 method Methods 0.000 description 30
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 27
- 238000007789 sealing Methods 0.000 description 23
- 229920000642 polymer Polymers 0.000 description 20
- 229940068984 polyvinyl alcohol Drugs 0.000 description 16
- 239000002904 solvent Substances 0.000 description 11
- 125000000217 alkyl group Chemical group 0.000 description 10
- 150000008051 alkyl sulfates Chemical class 0.000 description 9
- 239000000243 solution Substances 0.000 description 9
- 150000002191 fatty alcohols Chemical class 0.000 description 8
- 239000004615 ingredient Substances 0.000 description 8
- 238000005266 casting Methods 0.000 description 7
- 238000004090 dissolution Methods 0.000 description 7
- 150000003839 salts Chemical class 0.000 description 7
- 238000005406 washing Methods 0.000 description 7
- RZVAJINKPMORJF-UHFFFAOYSA-N Acetaminophen Chemical compound CC(=O)NC1=CC=C(O)C=C1 RZVAJINKPMORJF-UHFFFAOYSA-N 0.000 description 6
- 239000003795 chemical substances by application Substances 0.000 description 6
- 238000004140 cleaning Methods 0.000 description 6
- 229920001577 copolymer Polymers 0.000 description 6
- 235000014113 dietary fatty acids Nutrition 0.000 description 6
- 239000000194 fatty acid Substances 0.000 description 6
- 229930195729 fatty acid Natural products 0.000 description 6
- 150000004665 fatty acids Chemical class 0.000 description 6
- 239000002775 capsule Substances 0.000 description 5
- 238000005520 cutting process Methods 0.000 description 5
- 239000007884 disintegrant Substances 0.000 description 5
- 229920000036 polyvinylpyrrolidone Polymers 0.000 description 5
- 239000001267 polyvinylpyrrolidone Substances 0.000 description 5
- 235000013855 polyvinylpyrrolidone Nutrition 0.000 description 5
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 description 4
- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 description 4
- ZLMJMSJWJFRBEC-UHFFFAOYSA-N Potassium Chemical compound [K] ZLMJMSJWJFRBEC-UHFFFAOYSA-N 0.000 description 4
- 229920002472 Starch Polymers 0.000 description 4
- 150000001412 amines Chemical class 0.000 description 4
- 150000001768 cations Chemical class 0.000 description 4
- 229920002678 cellulose Polymers 0.000 description 4
- 238000001125 extrusion Methods 0.000 description 4
- 238000011049 filling Methods 0.000 description 4
- 229910052744 lithium Inorganic materials 0.000 description 4
- 238000002156 mixing Methods 0.000 description 4
- 229910052700 potassium Inorganic materials 0.000 description 4
- 239000011591 potassium Substances 0.000 description 4
- 235000019698 starch Nutrition 0.000 description 4
- 238000003466 welding Methods 0.000 description 4
- 239000002202 Polyethylene glycol Substances 0.000 description 3
- PMZURENOXWZQFD-UHFFFAOYSA-L Sodium Sulfate Chemical compound [Na+].[Na+].[O-]S([O-])(=O)=O PMZURENOXWZQFD-UHFFFAOYSA-L 0.000 description 3
- 125000004432 carbon atom Chemical group C* 0.000 description 3
- 239000001913 cellulose Substances 0.000 description 3
- 235000010980 cellulose Nutrition 0.000 description 3
- 230000000052 comparative effect Effects 0.000 description 3
- 238000010438 heat treatment Methods 0.000 description 3
- 229920000609 methyl cellulose Polymers 0.000 description 3
- 235000010981 methylcellulose Nutrition 0.000 description 3
- 239000000047 product Substances 0.000 description 3
- 239000008107 starch Substances 0.000 description 3
- 229940032147 starch Drugs 0.000 description 3
- 239000000126 substance Substances 0.000 description 3
- 238000007666 vacuum forming Methods 0.000 description 3
- 229920003169 water-soluble polymer Polymers 0.000 description 3
- 239000004606 Fillers/Extenders Substances 0.000 description 2
- 229920000881 Modified starch Polymers 0.000 description 2
- 239000002253 acid Substances 0.000 description 2
- 150000001298 alcohols Chemical class 0.000 description 2
- 229910052783 alkali metal Inorganic materials 0.000 description 2
- 150000001340 alkali metals Chemical class 0.000 description 2
- 230000015572 biosynthetic process Effects 0.000 description 2
- 238000000071 blow moulding Methods 0.000 description 2
- 238000007664 blowing Methods 0.000 description 2
- 125000003178 carboxy group Chemical group [H]OC(*)=O 0.000 description 2
- 125000002091 cationic group Chemical group 0.000 description 2
- 239000007788 liquid Substances 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 239000001923 methylcellulose Substances 0.000 description 2
- 235000019426 modified starch Nutrition 0.000 description 2
- 239000000178 monomer Substances 0.000 description 2
- 238000004806 packaging method and process Methods 0.000 description 2
- 229920000058 polyacrylate Polymers 0.000 description 2
- 239000002861 polymer material Substances 0.000 description 2
- 229910052938 sodium sulfate Inorganic materials 0.000 description 2
- 238000003856 thermoforming Methods 0.000 description 2
- 229920001169 thermoplastic Polymers 0.000 description 2
- 239000004416 thermosoftening plastic Substances 0.000 description 2
- HRPVXLWXLXDGHG-UHFFFAOYSA-N Acrylamide Chemical compound NC(=O)C=C HRPVXLWXLXDGHG-UHFFFAOYSA-N 0.000 description 1
- QGZKDVFQNNGYKY-UHFFFAOYSA-O Ammonium Chemical compound [NH4+] QGZKDVFQNNGYKY-UHFFFAOYSA-O 0.000 description 1
- 238000012935 Averaging Methods 0.000 description 1
- LSNNMFCWUKXFEE-UHFFFAOYSA-M Bisulfite Chemical compound OS([O-])=O LSNNMFCWUKXFEE-UHFFFAOYSA-M 0.000 description 1
- PTHCMJGKKRQCBF-UHFFFAOYSA-N Cellulose, microcrystalline Chemical compound OC1C(O)C(OC)OC(CO)C1OC1C(O)C(O)C(OC)C(CO)O1 PTHCMJGKKRQCBF-UHFFFAOYSA-N 0.000 description 1
- 229920002261 Corn starch Polymers 0.000 description 1
- 239000004375 Dextrin Substances 0.000 description 1
- 229920001353 Dextrin Polymers 0.000 description 1
- 239000001856 Ethyl cellulose Substances 0.000 description 1
- ZZSNKZQZMQGXPY-UHFFFAOYSA-N Ethyl cellulose Chemical compound CCOCC1OC(OC)C(OCC)C(OCC)C1OC1C(O)C(O)C(OC)C(CO)O1 ZZSNKZQZMQGXPY-UHFFFAOYSA-N 0.000 description 1
- 229920002907 Guar gum Polymers 0.000 description 1
- 229920000663 Hydroxyethyl cellulose Polymers 0.000 description 1
- 239000004354 Hydroxyethyl cellulose Substances 0.000 description 1
- 239000005913 Maltodextrin Substances 0.000 description 1
- 229920002774 Maltodextrin Polymers 0.000 description 1
- 229920000168 Microcrystalline cellulose Polymers 0.000 description 1
- 239000007832 Na2SO4 Substances 0.000 description 1
- RVGRUAULSDPKGF-UHFFFAOYSA-N Poloxamer Chemical compound C1CO1.CC1CO1 RVGRUAULSDPKGF-UHFFFAOYSA-N 0.000 description 1
- 239000004952 Polyamide Substances 0.000 description 1
- 229920002582 Polyethylene Glycol 600 Polymers 0.000 description 1
- 240000008042 Zea mays Species 0.000 description 1
- 235000005824 Zea mays ssp. parviglumis Nutrition 0.000 description 1
- 235000002017 Zea mays subsp mays Nutrition 0.000 description 1
- DPXJVFZANSGRMM-UHFFFAOYSA-N acetic acid;2,3,4,5,6-pentahydroxyhexanal;sodium Chemical compound [Na].CC(O)=O.OCC(O)C(O)C(O)C(O)C=O DPXJVFZANSGRMM-UHFFFAOYSA-N 0.000 description 1
- 150000007513 acids Chemical class 0.000 description 1
- 239000000853 adhesive Substances 0.000 description 1
- 230000001070 adhesive effect Effects 0.000 description 1
- 230000002411 adverse Effects 0.000 description 1
- 125000005210 alkyl ammonium group Chemical group 0.000 description 1
- 150000001408 amides Chemical class 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- SRSXLGNVWSONIS-UHFFFAOYSA-N benzenesulfonic acid Chemical class OS(=O)(=O)C1=CC=CC=C1 SRSXLGNVWSONIS-UHFFFAOYSA-N 0.000 description 1
- 239000002981 blocking agent Substances 0.000 description 1
- 150000007942 carboxylates Chemical group 0.000 description 1
- 229920003123 carboxymethyl cellulose sodium Polymers 0.000 description 1
- 229940063834 carboxymethylcellulose sodium Drugs 0.000 description 1
- 235000010418 carrageenan Nutrition 0.000 description 1
- 239000000679 carrageenan Substances 0.000 description 1
- 229920001525 carrageenan Polymers 0.000 description 1
- 229940113118 carrageenan Drugs 0.000 description 1
- 239000000969 carrier Substances 0.000 description 1
- 229920003086 cellulose ether Polymers 0.000 description 1
- 239000004927 clay Substances 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 230000001010 compromised effect Effects 0.000 description 1
- 239000007859 condensation product Substances 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 235000005822 corn Nutrition 0.000 description 1
- 238000005336 cracking Methods 0.000 description 1
- 229920006037 cross link polymer Polymers 0.000 description 1
- 239000003431 cross linking reagent Substances 0.000 description 1
- 235000019425 dextrin Nutrition 0.000 description 1
- 239000006185 dispersion Substances 0.000 description 1
- 238000001035 drying Methods 0.000 description 1
- 239000000839 emulsion Substances 0.000 description 1
- 229920001249 ethyl cellulose Polymers 0.000 description 1
- 235000019325 ethyl cellulose Nutrition 0.000 description 1
- 125000001495 ethyl group Chemical group [H]C([H])([H])C([H])([H])* 0.000 description 1
- 238000011156 evaluation Methods 0.000 description 1
- 150000002193 fatty amides Chemical class 0.000 description 1
- 150000002194 fatty esters Chemical class 0.000 description 1
- 238000005187 foaming Methods 0.000 description 1
- 125000000524 functional group Chemical group 0.000 description 1
- 150000002334 glycols Chemical class 0.000 description 1
- 239000000665 guar gum Substances 0.000 description 1
- 235000010417 guar gum Nutrition 0.000 description 1
- 229960002154 guar gum Drugs 0.000 description 1
- 125000002887 hydroxy group Chemical group [H]O* 0.000 description 1
- 235000019447 hydroxyethyl cellulose Nutrition 0.000 description 1
- 229910052500 inorganic mineral Inorganic materials 0.000 description 1
- 238000005304 joining Methods 0.000 description 1
- 229940035034 maltodextrin Drugs 0.000 description 1
- 229910044991 metal oxide Inorganic materials 0.000 description 1
- 235000019813 microcrystalline cellulose Nutrition 0.000 description 1
- 239000008108 microcrystalline cellulose Substances 0.000 description 1
- 229940016286 microcrystalline cellulose Drugs 0.000 description 1
- 239000011707 mineral Substances 0.000 description 1
- 229920005615 natural polymer Polymers 0.000 description 1
- 229920006280 packaging film Polymers 0.000 description 1
- 239000012785 packaging film Substances 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 229920001983 poloxamer Polymers 0.000 description 1
- 229920000233 poly(alkylene oxides) Polymers 0.000 description 1
- 229920001308 poly(aminoacid) Polymers 0.000 description 1
- 229920000747 poly(lactic acid) Polymers 0.000 description 1
- 229920002401 polyacrylamide Polymers 0.000 description 1
- 229920002647 polyamide Polymers 0.000 description 1
- 239000004626 polylactic acid Substances 0.000 description 1
- 229920000193 polymethacrylate Polymers 0.000 description 1
- 235000010482 polyoxyethylene sorbitan monooleate Nutrition 0.000 description 1
- 229920001451 polypropylene glycol Polymers 0.000 description 1
- 229920000053 polysorbate 80 Polymers 0.000 description 1
- 159000000001 potassium salts Chemical class 0.000 description 1
- 229920001592 potato starch Polymers 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
- 238000002203 pretreatment Methods 0.000 description 1
- 150000003138 primary alcohols Chemical class 0.000 description 1
- 238000007639 printing Methods 0.000 description 1
- 102000004196 processed proteins & peptides Human genes 0.000 description 1
- 108090000765 processed proteins & peptides Proteins 0.000 description 1
- 125000001453 quaternary ammonium group Chemical group 0.000 description 1
- 150000003242 quaternary ammonium salts Chemical class 0.000 description 1
- 230000009257 reactivity Effects 0.000 description 1
- 150000003333 secondary alcohols Chemical class 0.000 description 1
- 230000035945 sensitivity Effects 0.000 description 1
- 235000011152 sodium sulphate Nutrition 0.000 description 1
- RYPYDIHMPGBBJN-UHFFFAOYSA-M sodium;2-methyl-1-(prop-2-enoylamino)propane-1-sulfonate Chemical compound [Na+].CC(C)C(S([O-])(=O)=O)NC(=O)C=C RYPYDIHMPGBBJN-UHFFFAOYSA-M 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 238000005507 spraying Methods 0.000 description 1
- 238000003860 storage Methods 0.000 description 1
- 150000005846 sugar alcohols Polymers 0.000 description 1
- 230000019635 sulfation Effects 0.000 description 1
- 238000005670 sulfation reaction Methods 0.000 description 1
- 125000000542 sulfonic acid group Chemical group 0.000 description 1
- 150000003467 sulfuric acid derivatives Chemical class 0.000 description 1
- 239000000725 suspension Substances 0.000 description 1
- 229920002554 vinyl polymer Polymers 0.000 description 1
- 238000009463 water soluble packaging Methods 0.000 description 1
- 239000000230 xanthan gum Substances 0.000 description 1
- 235000010493 xanthan gum Nutrition 0.000 description 1
- 229920001285 xanthan gum Polymers 0.000 description 1
- 229940082509 xanthan gum Drugs 0.000 description 1
- UHVMMEOXYDMDKI-JKYCWFKZSA-L zinc;1-(5-cyanopyridin-2-yl)-3-[(1s,2s)-2-(6-fluoro-2-hydroxy-3-propanoylphenyl)cyclopropyl]urea;diacetate Chemical compound [Zn+2].CC([O-])=O.CC([O-])=O.CCC(=O)C1=CC=C(F)C([C@H]2[C@H](C2)NC(=O)NC=2N=CC(=CC=2)C#N)=C1O UHVMMEOXYDMDKI-JKYCWFKZSA-L 0.000 description 1
Classifications
-
- 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
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
- B65D65/00—Wrappers or flexible covers; Packaging materials of special type or form
- B65D65/38—Packaging materials of special type or form
- B65D65/46—Applications of disintegrable, dissolvable or edible materials
-
- 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
- C11D1/00—Detergent compositions based essentially on surface-active compounds; Use of these compounds as a detergent
- C11D1/02—Anionic compounds
-
- 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
- C11D3/16—Organic compounds
- C11D3/20—Organic compounds containing oxygen
- C11D3/22—Carbohydrates or derivatives thereof
- C11D3/222—Natural or synthetic polysaccharides, e.g. cellulose, starch, gum, alginic acid or cyclodextrin
-
- 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
- C11D3/16—Organic compounds
- C11D3/37—Polymers
- C11D3/3746—Macromolecular compounds obtained by reactions only involving carbon-to-carbon unsaturated bonds
- C11D3/3753—Polyvinylalcohol; Ethers or esters thereof
-
- 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
- C11D1/00—Detergent compositions based essentially on surface-active compounds; Use of these compounds as a detergent
- C11D1/02—Anionic compounds
- C11D1/12—Sulfonic acids or sulfuric acid esters; Salts thereof
- C11D1/29—Sulfates of polyoxyalkylene ethers
-
- 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
- C11D2111/00—Cleaning compositions characterised by the objects to be cleaned; Cleaning compositions characterised by non-standard cleaning or washing processes
- C11D2111/10—Objects to be cleaned
- C11D2111/12—Soft surfaces, e.g. textile
-
- 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
- C11D2111/00—Cleaning compositions characterised by the objects to be cleaned; Cleaning compositions characterised by non-standard cleaning or washing processes
- C11D2111/10—Objects to be cleaned
- C11D2111/14—Hard surfaces
Definitions
- the present invention relates to a water-soluble package having a water-soluble substrate which substrate includes a surfactant, in particular, it relates to packages containing dishwashing or laundry treatment compositions, method of producing such packages and their use in dishwashing and textile laundering or textile treatment.
- Water-soluble package known in the art typically enclose a cleaning or a treatment composition, such as a dishwashing or a laundry detergent composition enclosed in a water-soluble substrate that is in the form of a film, sachet, bag other types of container or capsule.
- the water-soluble package is commonly used to simplify dispersing, pouring, dissolving and dosing of the composition.
- a consumer can directly add the package to a mixing vessel, such as a bucket, sink or washing machine.
- a mixing vessel such as a bucket, sink or washing machine.
- This provides for accurate dosing while eliminating the need for the consumer to measure the composition.
- the package may also reduce mess that would be associated with dispensing a similar composition from a storage container, such as pouring a liquid laundry detergent from a bottle.
- the package also insulates the composition therein from contact with the user's hands.
- water-soluble package containing pre-measured composition provide for convenience of consumer use in a variety of applications.
- the water-soluble package in the form of a package or pouch, capsule or container is generally formed by sealing a water-soluble substrate to enclose a composition within.
- release of the contents of such water-soluble package must be quick and the water-soluble substrate enclosing the contents must dissolve completely during use in water, and without leaving a residue.
- a typical problem encountered by consumers is incomplete dissolution of the water-soluble package when added in the detergent drawer of a washing machine. This problem is especially predominant when the washing machine is utilising cold water for washing purpose.
- the water-soluble substrate is often thin, and designed to provide high water solubility or reactivity.
- US 3695989B1 (Robert E Albert, 1972 ) describes a cold-water soluble package made from polymeric films including polyvinyl alcohol, polyvinyl pyrrolidone or mixtures of the two for enclosing pulverulent materials.
- the package containing the pulverulent material may be directly charged to the water, to enable the user to dose exact measures without contacting the content of the package.
- US 4544693 A discloses a cold-water soluble packaging film having polyvinyl alcohol, polyvinyl pyrrolidone, ethoxylated alkylphenol and polyhydric alcohol.
- EP 1355977 B1 discloses a film forming composition and water-soluble film formed from the film-forming composition which dissolves in cold water conditions.
- the film-forming composition includes a water-soluble polymer material and a principal solvent.
- PVOH based thermoplastic films such as M8630 from MonoSol LLC are plasticized cold-water soluble film based on a medium molecular weight fully hydrolysed PVOH having carboxylate groups.
- the film has a thickness of 75 microns and a weight of about 98g/m 2 .
- water-soluble films that completely dissolve in cold water are known, they can be too sensitive to moisture and humidity to make package for containing consumer products such as cleaning composition or treatment compositions. High humidity or water droplets from handling of the package with wet hands can cause the water-soluble package to stick together and/or dissolve through the package and cause leakage of package contents.
- US8309203 B2 (The Procter & Gamble Company, 2012) describes a water-soluble substrate which have improved resistance to dissolution prior to being immersed in water by providing water-insoluble particles partially embedded in said water-soluble substrate.
- the water-soluble substrate has a basis weight of from 33 to 167 grams per square metres and a thickness ranging from 25 micrometres to about 125 micrometres.
- the water-soluble substrate may have surfactants incorporate in amounts ranging from about 0.01 wt% to about 1 wt%.
- the water-soluble substrate may have to be so thin that in addition to being sensitive to moisture and humidity the mechanical properties including those relating to process-ability and heat- sealability may also be compromised.
- the water-soluble substrate For preparing a package from the water-soluble substrate, it is desired that the water-soluble substrate must exhibit flexibility, that is, ability to accept a crease without cracking or becoming seriously weakened, in order to be useful.
- the present inventors investigated ways of improving water-soluble package and, in particular, into providing a water-soluble package that performs adequately and gives the benefits of good water-drop resistance, good cold-water solubility, good process-ability, flexibility and heat seal-ability.
- thin water-soluble substrate having a thickness from 30 microns to 200 microns may provide improvement in cold-water solubility but with reduced thickness, their process-ability and heat sealability is adversely affected.
- the present inventors have thus sought to provide a water-soluble package having a water-soluble substrate with a thickness from 30 microns to 200 microns which substrate has improved flexibility, process-ability and heat seal-ability.
- the present invention provides a water-soluble package having a water-soluble substrate with a thickness from 30 microns to 200 microns and which substrate includes a film-forming material and at least 8wt% surfactant wherein the surfactant is an anionic surfactant.
- the water-soluble substrate upon drying provides a non-sticky film and exhibits good heat seal-ability.
- the water-soluble package according to the first aspect of the invention having a water-soluble substrate, which substrate includes a film-forming material and specific levels of surfactant provides desirable flexibility even at lower levels of the film-forming material.
- the present invention provides a water-soluble package comprising a water-soluble substrate having a thickness from 30 microns to 200 microns and wherein said substrate comprises a film-forming material and at least 8 wt.% anionic surfactant.
- a water-soluble package of the first aspect for washing dishes, treating textiles or laundering textiles.
- the film-forming material is a polymer, more preferably a partially hydrolysed polyvinyl alcohol.
- a water-soluble package comprising a water-soluble substrate having a thickness from 30 microns to 200 microns, said substrate comprising a film-forming material; and at least 8wt% surfactant wherein the surfactant is an anionic surfactant.
- Water-soluble package means any package construction that is suitable for enclosing and/or containing a composition or material, such as a dishwashing or laundry detergent composition or fabric treatment composition.
- the water-soluble package can be in any packaging form, such as film packaging, capsules, bag, sachets and containers.
- the water-soluble package is a single dose water-soluble package.
- water-soluble not only refers to a structure that is totally water-soluble, but also includes those that are substantially water-soluble but have some material(s) in the water-soluble structure that are not water-soluble; structure which are soluble at different temperature conditions or different pH conditions and also refers to structure which are water-dispersible or water-disintegrable.
- the water-soluble package typically contains at least one compartment for containing the composition.
- the water-soluble package includes two or more compartments.
- Each compartment can contain same composition or a different composition from the one in another compartment.
- each compartment may contain a different component (or mixture of components) of a composition from another compartment.
- the water-soluble package may contain two compartments wherein each compartment is a different mixture of components together constituting a laundry cleaning composition treatment composition or dishwashing composition.
- the water-soluble package includes a water-soluble substrate enclosing and/or containing a composition or material.
- the water-soluble substrate may dissolve in water to release the material or composition enclosed within the substrate.
- Such materials and compositions particularly include, but are not limited to, detergent compositions, such as dishwashing composition, laundry detergent composition or fabric treatment compositions.
- the material or composition may be any of solid, granular, gel, particulate, tablet or liquid form.
- the material or composition is a powder, particulate, tablet or granular form.
- the water-soluble package may be designed as a dimensionally stable receptacle, for example in the form of a capsule, box, or container. It is also possible and preferred to form the water-soluble package as a non-dimensionally stable container, for example as a pouch or sachet.
- the shape of this type of water-soluble package may be adapted to a great extent to the use conditions. Various shapes such as tubes, cushions, cylinders, bottles, or disks are suitable.
- the water-soluble package of the invention is conveniently in the form of a pouch, bag or sachet.
- Such a sachet may be formed from one or more film or sheets of the water-soluble substrate or from a tubular section of such substrate, but it is most conveniently formed from a single folded sheet or from two sheets, sealed together at the edge regions either by means of an adhesive or, preferably, by heat-sealing.
- a preferred form of sachet according to the invention is a rectangular one formed from a single folded sheet of the water-soluble substrate sealed on three sides, although the sachet may be of any shape or size known in the art.
- Preferred methods of sealing include heat sealing, solvent welding, and solvent or wet sealing. It is preferred that only the area which is to form the seal, is treated with heat or solvent.
- the heat or solvent can be applied by any method, preferably on the closing material, preferably only on the areas which are to form the seal. If solvent or wet sealing or welding is used, it may be preferred that heat is also applied.
- Preferred wet or solvent sealing/welding methods include selectively applying solvent onto the area between the moulds, or on the closing material, by for example, spraying or printing this onto these areas, and then applying pressure onto these areas, to form the seal.
- the formed pouches can then be cut by a cutting device.
- Cutting can be done using any known method. It may be preferred that the cutting is also done in continuous manner, and preferably with constant speed and preferably while in horizontal position.
- the cutting device can, for example, be a sharp item or a hot item, whereby in the latter case, the hot item 'burns' through the film/sealing area.
- Disclosed water-soluble package for holding unit dose composition includes a water-soluble substrate, which substrate typically forms a wall or walls of the water-soluble package for enclosing a composition.
- the water-soluble substrate can be in the form of a film, a sheet, or a foamed film or sheet.
- the water- soluble substrate may be in the form of woven, non-woven or cast structures.
- Preferably the water-soluble substrate is thermoplastic.
- the water-soluble substrate has a thickness ranging from 30 micrometres to 200 micrometres.
- the thickness of the water-soluble substrate is at least 50 micrometres, still preferably at least 60 micrometres, further preferably at least 65 micrometres and most preferably at least 75 micrometres, but typically not more than 180 micrometres, still preferably not more than 170 micrometres and most preferably not more than 150 micrometres.
- Preferred water-soluble substrate has a thickness ranging from 75 micrometres to 150 micrometres.
- the water-soluble substrate has a basis weight in the range from 30 grams per square metre to 70 grams per square metre, more preferably the basis weight in the range from 35 grams per square metre to 50 grams per square metre.
- the basis weight of the water-soluble substrate is at least 32 grams per square metre, still preferably at least 34 grams per square metre, most preferably at least 35 grams per square metre, but typically not more than 60 grams per square metre, still preferably not more than 65 grams per square metre and most preferably not more than 50 grams per square metre.
- the water-soluble substrate is a foamed structure having dispersed within them a volume of gas bubbles.
- the average diameter of the gas bubbles is less than the thickness of the film.
- the water-soluble package for holding a unit dose composition includes a water-soluble substrate having a thickness from 30 micrometers to 200 micrometers and the substrate includes a film forming material, and at least 8wt% surfactant, wherein the surfactant is an anionic surfactant and the substrate has uniformly dispersed therein gas bubbles having an average diameter less than the total thickness of the substrate.
- the gas bubbles Preferably have an average diameter less than 1/3 of the total thickness of the film.
- the gas bubbles have a total volume which is from 80% to 99% of the total volume of the water-soluble substrate, more preferably from 85% to 90% of the total volume of the substrate.
- the water soluble-package according to a preferred embodiment of the present invention having the uniformly dispersed therein gas bubbles having an average diameter less than the total thickness of the substrate was found to give the benefits of good water-drop resistance, good cold-water solubility, good process-ability, flexibility and heat seal-ability.
- the water-soluble substrate includes a film-forming material.
- Film-forming material refers to a material that by itself or in combination with a co-reactive material, such as a crosslinking agent, is capable of forming a self-supporting continuous film on a surface upon curing and preferably includes polymeric material that upon removal of any solvents or carriers present in the polymer emulsion, dispersion, suspension or solution, can coalesce to form a film on at least a horizontal surface and is capable of curing into a continuous film.
- Such film-forming material preferably includes a polymer or monomer capable of producing a polymer material that exhibits properties suitable for making a film or a sheet, or a foamed film or sheet, such as by casting, blow-moulding, extrusion or blown extrusion of the material, as is well known in the art.
- Preferred film-forming material are polymeric material, preferably polymers which are capable of being formed into a film or a sheet.
- the polymeric material can, for example, be formed into a film or sheet by casting, blow-moulding, extrusion or blown extrusion of the polymeric material, as known in the art.
- Suitable film-forming material are known and includes any water-soluble polymer or mixtures of polymers.
- the water-soluble substrate may include one or more film-forming materials.
- film-forming material includes polymers, copolymers or derivatives thereof which are water-soluble and are selected from polyvinyl alcohol, modified polyvinyl alcohol, polyvinyl acetate, polycarboxylic acids and salts, polyacrylates, water-soluble acrylate copolymers, polyamino acids or peptides, polyamides, polylactic acid, polyaminopropyl sulfonic acid and salts thereof, polyitaconic acid and salts thereof, polyacrylamides, polyalkylene oxides, polyvinylpyrrolidone, pullalan, cellulosics (cellulose, cellulose ethers, cellulose esters, cellulose amides and includes examples such as carboxymethylcellulose and hydroxypropyl methyl cellulose), water-soluble natural polymers (such as guar gum, xanthan gum, carrage
- More preferred polymers are selected from polyacrylates and water-soluble acrylate copolymers, methylcellulose, carboxy methylcellulose sodium, dextrin, ethylcellulose, hydroxyethyl cellulose, hydroxypropyl methylcellulose, maltodextrin, polymethacrylates.
- the film-forming material includes polyvinyl alcohol, polyvinyl alcohol copolymers, partially hydrolysed polyvinyl acetate, a modified polyvinyl alcohol preferably modified with a carboxyl group, vinylamide monomer and/or a sulfonic acid group or other functional groups known in the art to improve the solubility in water, polyvinyl acetate, polyvinyl pyrrolidone, carboxymethylcellulose or hydroxypropyl methyl cellulose.
- the film-forming material includes or consists essentially of vinyl polymers, including homo-polymers and copolymers having hydroxyl or carboxyl groups.
- Preferred polymers includes polyvinyl alcohol, polyvinyl acetate, partially hydrolysed polyvinyl acetate, a modified polyvinyl alcohol or mixtures thereof.
- Polyvinyl alcohol, polyvinyl acetate and modified polyvinyl alcohols can provide stable water-soluble substrates that have suitable dissolution rates.
- the film-forming material in the water-soluble substrate is a PVOH.
- Mixtures of polymers can also be used as the film-forming material. This can be beneficial to control the mechanical and/or dissolution properties of the package, depending on the application thereof and the required needs.
- Suitable mixtures include for example mixtures wherein one polymer has a higher water-solubility than another polymer, and/or one polymer has a higher mechanical strength than another polymer.
- mixtures of polymers having different weight average molecular weights for example a mixture of polyvinyl alcohol or a copolymer thereof of a weight average molecular weight of about 10,000 to 40,000, preferably around 20,000, and of poly vinyl alcohol or copolymer thereof, with a weight average molecular weight of about 100,000 to 300,000, preferably around 150,000.
- the film forming material is a polymer having a weight average molecular weight of from 1000 to 1x10 6 , preferably from 1x10 4 to 3x10 5 , yet preferably from 20,000 to 1.5 X10 5 .
- the level of film-forming material in the water-soluble substrate is at least 40 wt%, still preferably at least 50 wt%, further preferably at least 55 wt% and most preferably at least 65 wt%, but typically not more than 85wt%, still preferably not more than 80 wt% and most preferably not more than 75 wt%.
- the film-forming material is preferably a polymer which is hydrolyzed.
- the polymer is partially hydrolysed, more preferably the polymer has a degree of hydrolysis ranging from 60% to 99%, preferably 60% to 98%, still preferably in the range from 60% to 90%, further preferably in the range from 65% to 85% and most preferably from 75% to 85%. Most preferably the degree of hydrolysis is between 75% to 80%.
- the film-forming material is a hydrolysed polyvinyl acetate preferably having a degree of hydrolysis from 60% to 90%.
- the process for preparing a water-soluble substrate from a film-forming material involves a step of blowing or casting the film-forming material or a solution thereof, preferably the water-soluble substrate is produced by a casting process.
- Disclosed water-soluble substrate includes at least 8wt% surfactant, wherein the surfactant is an anionic surfactant.
- the desired level of anionic surfactant according to the present invention in the water-soluble substrate provides the substrate with flexibility and heat seal-ability properties which enables the water-soluble package formed from the substrate to have good seal strength as well as mechanical properties.
- the water soluble-substrate includes at least 10wt% anionic surfactant, still preferably the water-soluble substrate includes from 8 to 25wt% of the anionic surfactant.
- the amount of anionic surfactant in the water-soluble substrate is at least 10wt%, still preferably at least 12wt%, further preferably at least 16wt% and most preferably at least 18wt%, but typically not more than 30wt%, still preferably not more than 28 wt% and most preferably not more than 25wt%.
- the surfactant is an anionic surfactant selected from straight chain or branched alkyl sulfates, sulfonate surfactant, alkyl polyalkoxylated sulfates, also known as alkyl ether sulfates such surfactants may be produced by the sulfation of higher Cs-C 20 fatty alcohols or mixtures thereof.
- Examples of primary alkyl sulfate surfactants are those of formula: ROSO 3 - M + wherein R is a linear C 8 -C 20 hydrocarbyl group and M is a water-solubilising cation.
- R is C 10 -C 16 alkyl, for example C 12 -C 14
- M is an alkali metal such as lithium, sodium or potassium.
- secondary alkyl sulfate surfactants are those which have the sulfate moiety on a "backbone" of the molecule, for example those of formula: CH 2 (CH 2 ) n (CHOSO 3 - M + )(CH 2 ) m CH 3 wherein m and n are independently 2 or more, the sum of m+n typically being 6 to 20, for example 9 to 15, and M is a water-solubilising cation such as lithium, sodium or potassium.
- Especially preferred secondary alkyl sulfates are the (2,3) alkyl sulfate surfactants of formulae: CH 2 (CH 2 ) x (CHOSO 3 - M + )CH 3 and CH 3 (CH 2 ) x (CHOSO 3 - M + )CH 2 CH 3 for the 2-sulfate and 3-sulfate, respectively.
- x is at least 4, for example 6 to 20, preferably 10 to 16.
- M is cation, such as an alkali metal, for example lithium, sodium or potassium.
- alkoxylated alkyl sulfates are ethoxylated alkyl sulfates of the formula: RO(C 2 H 4 O) n SO 3 - M + wherein R is a C 8 -C 20 alkyl group, preferably C 10 -C 18 such as a C 12 -C 16 , n is at least 1, for example from 1 to 20, preferably 1 to 15, especially 1 to 6, and M is a salt-forming cation such as lithium, sodium, potassium, ammonium, alkylammonium or alkanolammonium. These compounds can provide especially desirable fabric cleaning performance benefits when used in combination with alkyl sulfates.
- alkyl sulfates and alkyl ether sulfates will generally be used in the form of mixtures comprising varying alkyl chain lengths and, if present, varying degrees of alkoxylation.
- anionic surfactants which may be employed are salts of fatty acids, for example C 8 -C 18 fatty acids, especially the sodium or potassium salts, and alkyl, for example C 8 -C 18 , benzene sulfonates.
- the anionic surfactant is an alkoxylated C 8-18 anionic surfactant, sulphate surfactant, sulfonate surfactant or mixtures thereof.
- the alkoxylated C 8-18 anionic surfactant is a sodium lauryl ether sulphate with 1 to 3 ethylene oxide group.
- the alkoxylated anionic surfactant is preferably sodium lauryl ether sulphate with 1 to 3 ethylene oxide group and is preferably included in the water-soluble substrate at a level ranging from 8% to 25%, more preferably from 10% to 20%, still preferably from 10% to 18% by weight of the water-soluble substrate.
- surfactants include, but are not limited to, polyoxyethylenated polyoxypropylene glycols, alcohol ethoxylates, alkylphenol ethoxylates, tertiary acetylenic glycols and alkanolamides (nonionics), polyoxyethylenated amines, quaternary ammonium salts and quaternized polyoxyethylenated amines (cationics), and amine oxides, N-alkylbetaines and sulfobetaines (zwitterionics).
- non-ionic surfactant is an alkoxylated surfactant.
- non-ionic surfactants are fatty acid alkoxylates, such as fatty acid ethoxylates, especially those of formula: R(C 2 H 4 O) n OH wherein R is a straight or branched C 8 -C 16 alkyl group, preferably a C 9 -C 15 , for example C 10 -C 14 , alkyl group and n is at least 1, for example from 1 to 16, preferably 2 to 12, more preferably 3 to 10.
- the alkoxylated fatty alcohol non-ionic surfactant will frequently have a hydrophilic-lipophilic balance (HLB) which ranges from 3 to 17, more preferably from 6 to 15, most preferably from 10 to 15.
- HLB hydrophilic-lipophilic balance
- fatty alcohol ethoxylates are those made from alcohols of 12 to 15 carbon atoms and which contain about 7 moles of ethylene oxide. Such materials are commercially marketed under the trademarks Neodol 25-7 and Neodol 23-6.5 by Shell Chemical Company.
- Other useful Neodols include Neodol 1-5, an ethoxylated fatty alcohol averaging 11 carbon atoms in its alkyl chain with about 5 moles of ethylene oxide; Neodol 23-9, an ethoxylated primary C 12 -C 13 alcohol having about 9 moles of ethylene oxide; and Neodol 91-10, an ethoxylated C 9 -C 11 primary alcohol having about 10 moles of ethylene oxide.
- Dobanol 91-5 is an ethoxylated C 9 -C 11 fatty alcohol with an average of 5 moles ethylene oxide
- Dobanol 25-7 is an ethoxylated C 12 -C 15 fatty alcohol with an average of 7 moles of ethylene oxide per mole of fatty alcohol.
- Suitable ethoxylated alcohol non-ionic surfactants include Tergitol 15-S-7 and Tergitol 15-S-9, both of which are linear secondary alcohol ethoxylates available from Union Carbide Corporation.
- Tergitol 15-S-7 is a mixed ethoxylated product of a C 11 -C 15 linear secondary alkanol with 7 moles of ethylene oxide and Tergitol 15-S-9 is the same but with 9 moles of ethylene oxide.
- Neodol 45-11 which has ethylene oxide condensation products of a fatty alcohol having 14-15 carbon atoms and the number of ethylene oxide groups per mole being about 11. Such products are also available from Shell Chemical Company.
- non-ionic surfactants are, for example, C 10 -C 18 alkyl polyglycosides, such as C 12 -C 16 alkyl polyglycosides, especially the polyglucosides. These are especially useful when high foaming compositions are desired.
- Further surfactants are polyhydroxy fatty acid amides, such as C 10 -C 18 N-(3-methoxypropyl) glycamides and ethylene oxide-propylene oxide block polymers of the Pluronic type.
- cationic surfactants are those of the quaternary ammonium type.
- anionic surfactant as disclosed in the present invention, still preferably the alkoxylated C 8-18 anionic surfactant, sulphate anionic surfactant, sulfonate anionic surfactant or mixtures thereof advantageously provides the water-soluble substrate with improved heat-sealability and provides better flexibility and process-ability to the water-soluble substrate.
- the water-soluble substrate includes a plasticizer.
- plasticizer includes, but not limited to glycerol, glycerin, diglycerin, hydroxypropyl glycerine, sorbitol, methylene glycol diethylene glycol, triethylene glycol, tetraethylene glycol, propylene glycol, polyethylene glycols, neopentyl glycol, trimethylolpropame, polyether polyols, ethanolamines, and mixtures thereof.
- the plasticizer when present, may be included in the water-soluble substrate material in an appropriate amount, as generally known.
- the plasticizer is a combination of glycerin and polyethylene glycol.
- the water-soluble package of the present invention can be manufactured using standard known techniques.
- the water-soluble substrate is typically formed (preferably thermoformed) into a water-soluble substrate enclosure (e.g. a film pocket, open capsule or container).
- the water-soluble substrate enclosure may then be filled with a composition such as a dishwashing or laundry detergent composition or fabric treatment composition.
- the water-soluble enclosure containing the composition or material can then be sealed, for example by sealing the edges of the enclosure or joining the enclosure with one or more additional pieces of water-soluble substrate, in order to enclose the material or composition in the water-soluble package.
- the water-soluble package holding the composition may be in the form of a single- and multiple-compartment pouch, sachets, bags etc.
- Water-soluble package and other such containers that incorporate the water-soluble substrate described herein can be made in any suitable manner known in the art.
- processes for making water-soluble package include, but are not limited to processes known in the art as: vertical form-fill-sealing processes, horizontal form-fill sealing processes, and formation of the package in molds on the surface of a circular drum.
- a vertical tube is formed by folding a substrate. The bottom end of the tube is sealed to form an open package. This package is partially filled allowing a head space. The top part of the open package is then subsequently sealed together to close the package, and to form the next open package. The first package is subsequently cut and the process is repeated.
- the package formed in such a way usually have pillow shape.
- Horizontal form-fill sealing processes uses a die having a series of molds therein.
- a substrate is placed in the die and open package are formed in these molds, which can then be filled, covered with another layer of substrate, and sealed.
- a substrate is circulated over the drum and pockets are formed, which pass under a filling machine to fill the open pockets.
- the filling and sealing takes place at the highest point (top) of the circle described by the drum, e.g. typically, filling is done just before the rotating drum starts the downwards circular motion, and sealing just after the drum starts its downwards motion.
- the substrate can initially be molded or formed into the shape of an open package using thermoforming, vacuum-forming, or both.
- Thermoforming involves heating the molds and/or the substrate by applying heat in any known way such as contacting the molds with a heating element, or by blowing hot air or using heating lamps to heat the molds and/or the substrate.
- vacuum assistance is employed to help drive the substrate into the mold.
- the two techniques can be combined to form package, for example, the substrate can be formed into open package by vacuum-forming, and heat can be provided to facilitate the process.
- the open package is then filled with the composition to be contained therein.
- the filled, open package are then closed, which can be done by any method.
- the closing is done by continuously feeding a second material or substrate, such as a water-soluble substrate, over and onto the web of open pouches and then sealing the first substrate and second substrate together.
- the second material or substrate can comprise the water-soluble substrate described herein.
- the first and second substrates are typically sealed in the area between the molds, and, thus, between the package that are being formed in adjacent molds.
- the sealing can be done by any method. Methods of sealing include heat sealing, solvent welding, and solvent or wet sealing.
- the sealed webs of package can then be cut by a cutting device, which cuts the package in the web from one another, into separate package.
- the water-soluble package of the present invention comprises a composition which composition may be a fabric treatment composition or a fabric cleaning composition that may be utilized in a method for treating a fabric article.
- the method of treating a fabric article with the water-soluble package may comprise one or more steps selected from the group consisting of: (a) pre-treating the fabric article in a liquor formed by contacting the water-soluble package enclosing a pretreatment composition with water before washing the fabric article; (b) laundering the fabric article with a wash liquor formed by contacting the water soluble package enclosing a cleaning composition with water; (c) contacting the fabric article with the water soluble package enclosing a post-wash treatment composition after the laundering process; and (d) combinations thereof.
- the method may comprise the step of selecting of only a portion of the water-soluble package for use in treating a fabric article.
- the desired portion or compartment of the water-soluble package may be cut and/or torn away and either placed on or adhered to the fabric or placed into water to form a relatively small amount of wash liquor which is then used to pre-treat or give a post laundering treatment to the fabric.
- the user may customize the fabric treatment method according to the task at hand.
- at least a portion of a water-soluble package may be applied to the fabric to be treated using a device like a brush or a sponge.
- the water-soluble package may be applied directly to the surface of the fabric. Any one or more of the aforementioned steps may be repeated to achieve the desired fabric treatment benefit.
- disintegrants are preferably applied on the surface of the water-soluble substrate or they may be applied integrated into the water-soluble substrate or any combination thereof, in order to speed up the dissolution when the water-soluble substrate is immersed in water.
- the level of disintegrant is from 0.1 to 30%, preferably from 1 to 15%, by weight of said water-soluble substrate. Any suitable disintegrant known in the art may be used.
- Preferred disintegrants for use herein include corn/potato starch, methyl cellulose/celluloses, mineral clay powders, cross-linked cellulose, cross-linked polymer, cross-linked starch.
- Suitable release agents include, but are not limited to, fatty acids and their salts, fatty alcohols, fatty esters, fatty amines, fatty amine acetates and fatty amides.
- the release agent can be incorporated in the water-soluble substrate in any suitable amount including amounts within the range of from about 0.02% to about 1.5% by weight, or in the range of from about 0.04% to about 0.15% by weight.
- compositions may also include suitable extenders, anti-blocking agents, detackifying agents include, but are not limited to: starches, modified starches, crosslinked polyvinylpyrrolidone, crosslinked cellulose, microcrystalline cellulose and metallic oxides.
- the extender, antiblocking agent, detackifying agent can be present in the water-soluble substrate in any suitable amount including amounts in the range of from about 0.1% to about 25% by weight, preferably in the range of from about 1% to about 15% by weight.
- the composition in the water-soluble package may be any composition that is intended to be directly dosed preferably into a washing machine when the package dissolves or disintegrates.
- the composition may, for example, be a fabric treatment or fabric laundering, surface care or dishwashing composition. Thus, for example, it may be a dishwashing, water-softening composition, laundry or detergent composition, a rinse-treatment composition, fabric-conditioning composition or pretreatment composition.
- the composition may be in any form and not limited to powder, granular, tablet, particulate or a combination thereof.
- Suitable composition are generally packaged in amounts of from 0.5 to 100g, preferably from 5 to 100g, especially from 15 to 40g.
- a laundry composition may weight from 0.5 to 40 g preferably from 15 to 40g.
- Most preferably the amount of composition enables the user to unit dose the composition for each wash cycle of the washing machine or for pre-treatment or rinse-treatment of the textile.
- Example 1 Water-soluble substrate having polyvinyl alcohol and surfactant
- a water-soluble substrate according to the present invention was prepared by mixing the ingredients as disclosed in the Table 1 below in a silverson mixer. In the next step the mixture obtained was cast on a casting belt having a wet film thickness of around 380 microns to 750 microns, thereafter the cast mixture was dried in an oven to provide a film reel which had a final thickness of around 75 micrometer to 200 micrometers.
- Table 1 Composition of the water-soluble substrate Ingredients Concentration (wt%) Partially hydrolysed polyvinyl alcohol 65 Polyethylene glycol 3.8 glycerin 2.2 Sodium lauryl ether sulphate 18 Other ingredients 11
- the water-soluble substrate having the composition provided in table 1 was found to be soluble in cold water at a temperature of 10°C.
- Example 2 Water-soluble package according to the present invention
- Sachets were prepared from the water-soluble substrate prepared in Example 1. Each sachet was made from a single folded sheet of the film, with one folded edge and two heat-sealed edges, the fourth edge being left unsealed for filling purposes. 40g of a powder detergent composition was filled in each sachet and closed by heat-sealing along the fourth edge. It was found that the sachet sealed properly along the edges and no leakage was observed.
- Example 3 Evaluation of water-soluble substrate having a non-ionic surfactant and an anionic surfactant.
- a comparative water-soluble substrate (Ex A) was prepared by mixing the ingredients as disclosed in the Table 2 in a silverson mixer and the solution obtained had a solution density of 0.7 grams/mL. In the next step the mixture obtained was cast on a casting belt having a wet film thickness of 380 micrometres, thereafter the cast mixture was dried in an oven to provide a film reel which had a final thickness of 105 micrometres.
- the water-soluble substrate obtained had a moisture content of 3.8wt%.
- a water-soluble substrate (Ex 2) according to the present invention was prepared by mixing the ingredients as disclosed in the Table 2 below in a silverson mixer and the solution obtained had a solution density of 0.7 grams/mL.
- the mixture obtained was cast on a casting belt having a wet film thickness of 380 micrometres, thereafter the cast mixture was dried in an oven to provide a film reel which had a final thickness of 64 micrometres.
- the water-soluble substrate obtained had a moisture content of 3.8wt%.
- composition of the prepared water-soluble substrate as described above are given in Table 2. Both the water-soluble substrates were evaluated for heat seal-ability and the film strength and the details are provided in the Table 2.
- Table 2 Ingredients Ex A (wt%) Ex 2 (wt%) Partially hydrolysed polyvinyl alcohol 76.3 76.3 Anionic surfactant (SLES 3EO *) 0 17.7 nonionic surfactant** 17.7 0 Polyethylene glycol PEG-600 3.8 3.8 Glycerin 2.2 2.2 Film strength Poor Good Seal Strength @ 150°C Weak seal and breaks at point of sealing; below this temperature the seal strength is fair.
- Table 2 shows that a comparative water-soluble substrate having the non-ionic surfactant takes comparatively longer time to completely dissolve in water at a temperature of 10°C as compared to the water-soluble substrate having an anionic surfactant (Ex 2 according to the present invention).
- the water-soluble substrate (Ex 2) according to the present invention also shows better film strength and seal strength when compared to the comparative water-soluble substrate (Ex A).
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Description
- The present invention relates to a water-soluble package having a water-soluble substrate which substrate includes a surfactant, in particular, it relates to packages containing dishwashing or laundry treatment compositions, method of producing such packages and their use in dishwashing and textile laundering or textile treatment.
- Water-soluble package known in the art typically enclose a cleaning or a treatment composition, such as a dishwashing or a laundry detergent composition enclosed in a water-soluble substrate that is in the form of a film, sachet, bag other types of container or capsule. The water-soluble package is commonly used to simplify dispersing, pouring, dissolving and dosing of the composition. A consumer can directly add the package to a mixing vessel, such as a bucket, sink or washing machine. Advantageously, this provides for accurate dosing while eliminating the need for the consumer to measure the composition. The package may also reduce mess that would be associated with dispensing a similar composition from a storage container, such as pouring a liquid laundry detergent from a bottle. The package also insulates the composition therein from contact with the user's hands. In sum, water-soluble package containing pre-measured composition provide for convenience of consumer use in a variety of applications.
- The water-soluble package in the form of a package or pouch, capsule or container is generally formed by sealing a water-soluble substrate to enclose a composition within. Typically, release of the contents of such water-soluble package must be quick and the water-soluble substrate enclosing the contents must dissolve completely during use in water, and without leaving a residue.
- A typical problem encountered by consumers is incomplete dissolution of the water-soluble package when added in the detergent drawer of a washing machine. This problem is especially predominant when the washing machine is utilising cold water for washing purpose. To overcome this issue, the water-soluble substrate is often thin, and designed to provide high water solubility or reactivity.
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US 3695989B1 (Robert E Albert, 1972 ) describes a cold-water soluble package made from polymeric films including polyvinyl alcohol, polyvinyl pyrrolidone or mixtures of the two for enclosing pulverulent materials. The package containing the pulverulent material may be directly charged to the water, to enable the user to dose exact measures without contacting the content of the package. -
US 4544693 A (Surgant, 1985) discloses a cold-water soluble packaging film having polyvinyl alcohol, polyvinyl pyrrolidone, ethoxylated alkylphenol and polyhydric alcohol. -
EP 1355977 B1 (The Procter & Gamble Company, 2006) discloses a film forming composition and water-soluble film formed from the film-forming composition which dissolves in cold water conditions. The film-forming composition includes a water-soluble polymer material and a principal solvent. - Known commercially available PVOH based thermoplastic films such as M8630 from MonoSol LLC are plasticized cold-water soluble film based on a medium molecular weight fully hydrolysed PVOH having carboxylate groups. The film has a thickness of 75 microns and a weight of about 98g/m2.
- Although water-soluble films that completely dissolve in cold water are known, they can be too sensitive to moisture and humidity to make package for containing consumer products such as cleaning composition or treatment compositions. High humidity or water droplets from handling of the package with wet hands can cause the water-soluble package to stick together and/or dissolve through the package and cause leakage of package contents.
- To reduce the sensitivity of water-soluble film to moisture and humidity solutions have been proposed in the past. One such solution is considered in
US 2006/0165625 A1 (Verrall et al. ) which describes a water-soluble article such as films, having a coating of Na2SO4 solution applied to the outer surface of a PVOH pouch that exhibits increased resistance to pouch-to-pouch stickiness when exposed to small amounts of water. It also discloses a method of making the water-soluble film having a step of adding salt to the water-soluble film forming composition and then forming a film from the mixture including the water-soluble-film forming composition with sodium sulphate therein. - More recently,
US8309203 B2 (The Procter & Gamble Company, 2012) describes a water-soluble substrate which have improved resistance to dissolution prior to being immersed in water by providing water-insoluble particles partially embedded in said water-soluble substrate. The water-soluble substrate has a basis weight of from 33 to 167 grams per square metres and a thickness ranging from 25 micrometres to about 125 micrometres. The water-soluble substrate may have surfactants incorporate in amounts ranging from about 0.01 wt% to about 1 wt%. - For achieving good cold-water solubility, the water-soluble substrate may have to be so thin that in addition to being sensitive to moisture and humidity the mechanical properties including those relating to process-ability and heat- sealability may also be compromised. For preparing a package from the water-soluble substrate, it is desired that the water-soluble substrate must exhibit flexibility, that is, ability to accept a crease without cracking or becoming seriously weakened, in order to be useful.
- Thus, the present inventors investigated ways of improving water-soluble package and, in particular, into providing a water-soluble package that performs adequately and gives the benefits of good water-drop resistance, good cold-water solubility, good process-ability, flexibility and heat seal-ability. However, the present inventors have noticed that thin water-soluble substrate having a thickness from 30 microns to 200 microns may provide improvement in cold-water solubility but with reduced thickness, their process-ability and heat sealability is adversely affected.
- The present inventors have thus sought to provide a water-soluble package having a water-soluble substrate with a thickness from 30 microns to 200 microns which substrate has improved flexibility, process-ability and heat seal-ability.
- At its most general, the present invention provides a water-soluble package having a water-soluble substrate with a thickness from 30 microns to 200 microns and which substrate includes a film-forming material and at least 8wt% surfactant wherein the surfactant is an anionic surfactant. The water-soluble substrate upon drying provides a non-sticky film and exhibits good heat seal-ability.
- It was also found that the water-soluble package according to the first aspect of the invention having a water-soluble substrate, which substrate includes a film-forming material and specific levels of surfactant provides desirable flexibility even at lower levels of the film-forming material.
- Accordingly, in a first aspect, the present invention provides a water-soluble package comprising a water-soluble substrate having a thickness from 30 microns to 200 microns and wherein said substrate comprises a film-forming material and at least 8 wt.% anionic surfactant.
- According to a second aspect of the present invention, disclosed is use of a water-soluble package of the first aspect for washing dishes, treating textiles or laundering textiles.
- Preferably the film-forming material is a polymer, more preferably a partially hydrolysed polyvinyl alcohol.
- According to a first aspect of the present invention disclosed is a water-soluble package comprising a water-soluble substrate having a thickness from 30 microns to 200 microns, said substrate comprising a film-forming material; and at least 8wt% surfactant wherein the surfactant is an anionic surfactant.
- "Water-soluble package" means any package construction that is suitable for enclosing and/or containing a composition or material, such as a dishwashing or laundry detergent composition or fabric treatment composition. The water-soluble package can be in any packaging form, such as film packaging, capsules, bag, sachets and containers. In particular embodiments, the water-soluble package is a single dose water-soluble package.
- As used herein, the term "water-soluble" not only refers to a structure that is totally water-soluble, but also includes those that are substantially water-soluble but have some material(s) in the water-soluble structure that are not water-soluble; structure which are soluble at different temperature conditions or different pH conditions and also refers to structure which are water-dispersible or water-disintegrable.
- The water-soluble package typically contains at least one compartment for containing the composition. In some embodiments, the water-soluble package includes two or more compartments. Each compartment can contain same composition or a different composition from the one in another compartment. Alternatively, each compartment may contain a different component (or mixture of components) of a composition from another compartment. For example, the water-soluble package may contain two compartments wherein each compartment is a different mixture of components together constituting a laundry cleaning composition treatment composition or dishwashing composition.
- The water-soluble package includes a water-soluble substrate enclosing and/or containing a composition or material. In use, the water-soluble substrate may dissolve in water to release the material or composition enclosed within the substrate. Such materials and compositions particularly include, but are not limited to, detergent compositions, such as dishwashing composition, laundry detergent composition or fabric treatment compositions. The material or composition may be any of solid, granular, gel, particulate, tablet or liquid form. Preferably the material or composition is a powder, particulate, tablet or granular form.
- The water-soluble package may be designed as a dimensionally stable receptacle, for example in the form of a capsule, box, or container. It is also possible and preferred to form the water-soluble package as a non-dimensionally stable container, for example as a pouch or sachet. The shape of this type of water-soluble package may be adapted to a great extent to the use conditions. Various shapes such as tubes, cushions, cylinders, bottles, or disks are suitable. The water-soluble package of the invention is conveniently in the form of a pouch, bag or sachet. Such a sachet may be formed from one or more film or sheets of the water-soluble substrate or from a tubular section of such substrate, but it is most conveniently formed from a single folded sheet or from two sheets, sealed together at the edge regions either by means of an adhesive or, preferably, by heat-sealing. A preferred form of sachet according to the invention is a rectangular one formed from a single folded sheet of the water-soluble substrate sealed on three sides, although the sachet may be of any shape or size known in the art.
- Preferred methods of sealing include heat sealing, solvent welding, and solvent or wet sealing. It is preferred that only the area which is to form the seal, is treated with heat or solvent. The heat or solvent can be applied by any method, preferably on the closing material, preferably only on the areas which are to form the seal. If solvent or wet sealing or welding is used, it may be preferred that heat is also applied. Preferred wet or solvent sealing/welding methods include selectively applying solvent onto the area between the moulds, or on the closing material, by for example, spraying or printing this onto these areas, and then applying pressure onto these areas, to form the seal.
- The formed pouches can then be cut by a cutting device. Cutting can be done using any known method. It may be preferred that the cutting is also done in continuous manner, and preferably with constant speed and preferably while in horizontal position. The cutting device can, for example, be a sharp item or a hot item, whereby in the latter case, the hot item 'burns' through the film/sealing area.
- Disclosed water-soluble package for holding unit dose composition includes a water-soluble substrate, which substrate typically forms a wall or walls of the water-soluble package for enclosing a composition.
- The water-soluble substrate can be in the form of a film, a sheet, or a foamed film or sheet. The water- soluble substrate may be in the form of woven, non-woven or cast structures. Preferably the water-soluble substrate is thermoplastic.
- The water-soluble substrate has a thickness ranging from 30 micrometres to 200 micrometres. Preferably the thickness of the water-soluble substrate is at least 50 micrometres, still preferably at least 60 micrometres, further preferably at least 65 micrometres and most preferably at least 75 micrometres, but typically not more than 180 micrometres, still preferably not more than 170 micrometres and most preferably not more than 150 micrometres. Preferred water-soluble substrate has a thickness ranging from 75 micrometres to 150 micrometres.
- Preferably, the water-soluble substrate has a basis weight in the range from 30 grams per square metre to 70 grams per square metre, more preferably the basis weight in the range from 35 grams per square metre to 50 grams per square metre. Preferably the basis weight of the water-soluble substrate is at least 32 grams per square metre, still preferably at least 34 grams per square metre, most preferably at least 35 grams per square metre, but typically not more than 60 grams per square metre, still preferably not more than 65 grams per square metre and most preferably not more than 50 grams per square metre.
- Preferably the water-soluble substrate is a foamed structure having dispersed within them a volume of gas bubbles. In the foamed structure preferably, the average diameter of the gas bubbles is less than the thickness of the film.
- In a preferred embodiment, the water-soluble package for holding a unit dose composition includes a water-soluble substrate having a thickness from 30 micrometers to 200 micrometers and the substrate includes a film forming material, and at least 8wt% surfactant, wherein the surfactant is an anionic surfactant and the substrate has uniformly dispersed therein gas bubbles having an average diameter less than the total thickness of the substrate. Preferably the gas bubbles have an average diameter less than 1/3 of the total thickness of the film. Preferably the gas bubbles have a total volume which is from 80% to 99% of the total volume of the water-soluble substrate, more preferably from 85% to 90% of the total volume of the substrate.
- The water soluble-package according to a preferred embodiment of the present invention having the uniformly dispersed therein gas bubbles having an average diameter less than the total thickness of the substrate was found to give the benefits of good water-drop resistance, good cold-water solubility, good process-ability, flexibility and heat seal-ability.
- The water-soluble substrate includes a film-forming material. "Film-forming material" as used herein refers to a material that by itself or in combination with a co-reactive material, such as a crosslinking agent, is capable of forming a self-supporting continuous film on a surface upon curing and preferably includes polymeric material that upon removal of any solvents or carriers present in the polymer emulsion, dispersion, suspension or solution, can coalesce to form a film on at least a horizontal surface and is capable of curing into a continuous film. Such film-forming material preferably includes a polymer or monomer capable of producing a polymer material that exhibits properties suitable for making a film or a sheet, or a foamed film or sheet, such as by casting, blow-moulding, extrusion or blown extrusion of the material, as is well known in the art.
- Preferred film-forming material are polymeric material, preferably polymers which are capable of being formed into a film or a sheet. The polymeric material can, for example, be formed into a film or sheet by casting, blow-moulding, extrusion or blown extrusion of the polymeric material, as known in the art.
- Suitable film-forming material are known and includes any water-soluble polymer or mixtures of polymers. In particular, the water-soluble substrate may include one or more film-forming materials. Examples of film-forming material includes polymers, copolymers or derivatives thereof which are water-soluble and are selected from polyvinyl alcohol, modified polyvinyl alcohol, polyvinyl acetate, polycarboxylic acids and salts, polyacrylates, water-soluble acrylate copolymers, polyamino acids or peptides, polyamides, polylactic acid, polyaminopropyl sulfonic acid and salts thereof, polyitaconic acid and salts thereof, polyacrylamides, polyalkylene oxides, polyvinylpyrrolidone, pullalan, cellulosics (cellulose, cellulose ethers, cellulose esters, cellulose amides and includes examples such as carboxymethylcellulose and hydroxypropyl methyl cellulose), water-soluble natural polymers (such as guar gum, xanthan gum, carrageenan and starch), water-soluble polymer derivatives (such as modified starches, including ethoxylated starch and hydroxylated propylstarch, poly(sodium acryloamido-2-methylpropane sulfonate, polymonomethylmaleate and salts thereof) and combinations thereof.
- More preferred polymers are selected from polyacrylates and water-soluble acrylate copolymers, methylcellulose, carboxy methylcellulose sodium, dextrin, ethylcellulose, hydroxyethyl cellulose, hydroxypropyl methylcellulose, maltodextrin, polymethacrylates. Preferably the film-forming material includes polyvinyl alcohol, polyvinyl alcohol copolymers, partially hydrolysed polyvinyl acetate, a modified polyvinyl alcohol preferably modified with a carboxyl group, vinylamide monomer and/or a sulfonic acid group or other functional groups known in the art to improve the solubility in water, polyvinyl acetate, polyvinyl pyrrolidone, carboxymethylcellulose or hydroxypropyl methyl cellulose.
- Still preferably, the film-forming material includes or consists essentially of vinyl polymers, including homo-polymers and copolymers having hydroxyl or carboxyl groups. Preferred polymers includes polyvinyl alcohol, polyvinyl acetate, partially hydrolysed polyvinyl acetate, a modified polyvinyl alcohol or mixtures thereof. Polyvinyl alcohol, polyvinyl acetate and modified polyvinyl alcohols can provide stable water-soluble substrates that have suitable dissolution rates. Preferably the film-forming material in the water-soluble substrate is a PVOH.
- Mixtures of polymers can also be used as the film-forming material. This can be beneficial to control the mechanical and/or dissolution properties of the package, depending on the application thereof and the required needs. Suitable mixtures include for example mixtures wherein one polymer has a higher water-solubility than another polymer, and/or one polymer has a higher mechanical strength than another polymer. Also suitable are mixtures of polymers having different weight average molecular weights, for example a mixture of polyvinyl alcohol or a copolymer thereof of a weight average molecular weight of about 10,000 to 40,000, preferably around 20,000, and of poly vinyl alcohol or copolymer thereof, with a weight average molecular weight of about 100,000 to 300,000, preferably around 150,000.
- Preferably the film forming material is a polymer having a weight average molecular weight of from 1000 to 1x106, preferably from 1x104 to 3x105, yet preferably from 20,000 to 1.5 X105.
- Preferably, the level of film-forming material in the water-soluble substrate, for example a polyvinyl alcohol polymer, is at least 40 wt%, still preferably at least 50 wt%, further preferably at least 55 wt% and most preferably at least 65 wt%, but typically not more than 85wt%, still preferably not more than 80 wt% and most preferably not more than 75 wt%.
- The film-forming material is preferably a polymer which is hydrolyzed. To provide the desired film properties for preparing a package while maintaining acceptable dissolution rates it is preferred that the polymer is partially hydrolysed, more preferably the polymer has a degree of hydrolysis ranging from 60% to 99%, preferably 60% to 98%, still preferably in the range from 60% to 90%, further preferably in the range from 65% to 85% and most preferably from 75% to 85%. Most preferably the degree of hydrolysis is between 75% to 80%. Preferably the film-forming material is a hydrolysed polyvinyl acetate preferably having a degree of hydrolysis from 60% to 90%.
- Preferably, the process for preparing a water-soluble substrate from a film-forming material involves a step of blowing or casting the film-forming material or a solution thereof, preferably the water-soluble substrate is produced by a casting process.
- Disclosed water-soluble substrate includes at least 8wt% surfactant, wherein the surfactant is an anionic surfactant. The desired level of anionic surfactant according to the present invention in the water-soluble substrate provides the substrate with flexibility and heat seal-ability properties which enables the water-soluble package formed from the substrate to have good seal strength as well as mechanical properties.
- More preferably the water soluble-substrate includes at least 10wt% anionic surfactant, still preferably the water-soluble substrate includes from 8 to 25wt% of the anionic surfactant. Preferably the amount of anionic surfactant in the water-soluble substrate is at least 10wt%, still preferably at least 12wt%, further preferably at least 16wt% and most preferably at least 18wt%, but typically not more than 30wt%, still preferably not more than 28 wt% and most preferably not more than 25wt%.
- Preferably the surfactant is an anionic surfactant selected from straight chain or branched alkyl sulfates, sulfonate surfactant, alkyl polyalkoxylated sulfates, also known as alkyl ether sulfates such surfactants may be produced by the sulfation of higher Cs-C20 fatty alcohols or mixtures thereof.
- Examples of primary alkyl sulfate surfactants are those of formula:
ROSO3 -M+
wherein R is a linear C8-C20 hydrocarbyl group and M is a water-solubilising cation. Preferably R is C10-C16 alkyl, for example C12-C14, and M is an alkali metal such as lithium, sodium or potassium. - Examples of secondary alkyl sulfate surfactants are those which have the sulfate moiety on a "backbone" of the molecule, for example those of formula: CH2(CH2)n(CHOSO3 -M+)(CH2)mCH3 wherein m and n are independently 2 or more, the sum of m+n typically being 6 to 20, for example 9 to 15, and M is a water-solubilising cation such as lithium, sodium or potassium.
- Especially preferred secondary alkyl sulfates are the (2,3) alkyl sulfate surfactants of formulae:
CH2(CH2)x(CHOSO3 -M+)CH3 and CH3(CH2)x(CHOSO3 -M+)CH2CH3
for the 2-sulfate and 3-sulfate, respectively. In these formulae x is at least 4, for example 6 to 20, preferably 10 to 16. M is cation, such as an alkali metal, for example lithium, sodium or potassium. - Examples of alkoxylated alkyl sulfates are ethoxylated alkyl sulfates of the formula: RO(C2H4O)nSO3 -M+ wherein R is a C8-C20 alkyl group, preferably C10-C18 such as a C12-C16, n is at least 1, for example from 1 to 20, preferably 1 to 15, especially 1 to 6, and M is a salt-forming cation such as lithium, sodium, potassium, ammonium, alkylammonium or alkanolammonium. These compounds can provide especially desirable fabric cleaning performance benefits when used in combination with alkyl sulfates.
- The alkyl sulfates and alkyl ether sulfates will generally be used in the form of mixtures comprising varying alkyl chain lengths and, if present, varying degrees of alkoxylation.
- Other anionic surfactants which may be employed are salts of fatty acids, for example C8-C18 fatty acids, especially the sodium or potassium salts, and alkyl, for example C8-C18, benzene sulfonates.
- Most preferably, the anionic surfactant is an alkoxylated C8-18 anionic surfactant, sulphate surfactant, sulfonate surfactant or mixtures thereof. Preferably the alkoxylated C8-18 anionic surfactant is a sodium lauryl ether sulphate with 1 to 3 ethylene oxide group. The alkoxylated anionic surfactant is preferably sodium lauryl ether sulphate with 1 to 3 ethylene oxide group and is preferably included in the water-soluble substrate at a level ranging from 8% to 25%, more preferably from 10% to 20%, still preferably from 10% to 18% by weight of the water-soluble substrate.
- In addition to the anionic surfactant other surfactants may also be preferably included in the water-soluble substrate such as nonionic, cationic, amphoteric and zwitterionic classes or mixtures thereof. Suitable surfactants include, but are not limited to, polyoxyethylenated polyoxypropylene glycols, alcohol ethoxylates, alkylphenol ethoxylates, tertiary acetylenic glycols and alkanolamides (nonionics), polyoxyethylenated amines, quaternary ammonium salts and quaternized polyoxyethylenated amines (cationics), and amine oxides, N-alkylbetaines and sulfobetaines (zwitterionics).
- Preferably the non-ionic surfactant is an alkoxylated surfactant. Examples of non-ionic surfactants are fatty acid alkoxylates, such as fatty acid ethoxylates, especially those of formula:
R(C2H4O)nOH
wherein R is a straight or branched C8-C16 alkyl group, preferably a C9-C15, for example C10-C14, alkyl group and n is at least 1, for example from 1 to 16, preferably 2 to 12, more preferably 3 to 10. - The alkoxylated fatty alcohol non-ionic surfactant will frequently have a hydrophilic-lipophilic balance (HLB) which ranges from 3 to 17, more preferably from 6 to 15, most preferably from 10 to 15.
- Examples of fatty alcohol ethoxylates are those made from alcohols of 12 to 15 carbon atoms and which contain about 7 moles of ethylene oxide. Such materials are commercially marketed under the trademarks Neodol 25-7 and Neodol 23-6.5 by Shell Chemical Company. Other useful Neodols include Neodol 1-5, an ethoxylated fatty alcohol averaging 11 carbon atoms in its alkyl chain with about 5 moles of ethylene oxide; Neodol 23-9, an ethoxylated primary C12-C13 alcohol having about 9 moles of ethylene oxide; and Neodol 91-10, an ethoxylated C9-C11 primary alcohol having about 10 moles of ethylene oxide.
- Alcohol ethoxylates of this type have also been marketed by Shell Chemical Company under the Dobanol trademark. Dobanol 91-5 is an ethoxylated C9-C11 fatty alcohol with an average of 5 moles ethylene oxide and Dobanol 25-7 is an ethoxylated C12-C15 fatty alcohol with an average of 7 moles of ethylene oxide per mole of fatty alcohol.
- Other examples of suitable ethoxylated alcohol non-ionic surfactants include Tergitol 15-S-7 and Tergitol 15-S-9, both of which are linear secondary alcohol ethoxylates available from Union Carbide Corporation. Tergitol 15-S-7 is a mixed ethoxylated product of a C11-C15 linear secondary alkanol with 7 moles of ethylene oxide and Tergitol 15-S-9 is the same but with 9 moles of ethylene oxide.
- Other suitable alcohol ethoxylated non-ionic surfactants are Neodol 45-11, which has ethylene oxide condensation products of a fatty alcohol having 14-15 carbon atoms and the number of ethylene oxide groups per mole being about 11. Such products are also available from Shell Chemical Company.
- Further non-ionic surfactants are, for example, C10-C18 alkyl polyglycosides, such as C12-C16 alkyl polyglycosides, especially the polyglucosides. These are especially useful when high foaming compositions are desired. Further surfactants are polyhydroxy fatty acid amides, such as C10-C18 N-(3-methoxypropyl) glycamides and ethylene oxide-propylene oxide block polymers of the Pluronic type.
- Examples of cationic surfactants are those of the quaternary ammonium type.
- Specific levels of anionic surfactant as disclosed in the present invention, still preferably the alkoxylated C8-18 anionic surfactant, sulphate anionic surfactant, sulfonate anionic surfactant or mixtures thereof advantageously provides the water-soluble substrate with improved heat-sealability and provides better flexibility and process-ability to the water-soluble substrate.
- Preferably the water-soluble substrate includes a plasticizer. Examples of preferred plasticizer includes, but not limited to glycerol, glycerin, diglycerin, hydroxypropyl glycerine, sorbitol, methylene glycol diethylene glycol, triethylene glycol, tetraethylene glycol, propylene glycol, polyethylene glycols, neopentyl glycol, trimethylolpropame, polyether polyols, ethanolamines, and mixtures thereof. The plasticizer, when present, may be included in the water-soluble substrate material in an appropriate amount, as generally known. Preferably, the plasticizer is a combination of glycerin and polyethylene glycol.
- The water-soluble package of the present invention can be manufactured using standard known techniques. For example, the water-soluble substrate is typically formed (preferably thermoformed) into a water-soluble substrate enclosure (e.g. a film pocket, open capsule or container). The water-soluble substrate enclosure may then be filled with a composition such as a dishwashing or laundry detergent composition or fabric treatment composition. The water-soluble enclosure containing the composition or material can then be sealed, for example by sealing the edges of the enclosure or joining the enclosure with one or more additional pieces of water-soluble substrate, in order to enclose the material or composition in the water-soluble package. The water-soluble package holding the composition may be in the form of a single- and multiple-compartment pouch, sachets, bags etc.
- Water-soluble package and other such containers that incorporate the water-soluble substrate described herein can be made in any suitable manner known in the art. There are a number of processes for making water-soluble package. These include, but are not limited to processes known in the art as: vertical form-fill-sealing processes, horizontal form-fill sealing processes, and formation of the package in molds on the surface of a circular drum.
- In vertical form-fill-sealing processes, a vertical tube is formed by folding a substrate. The bottom end of the tube is sealed to form an open package. This package is partially filled allowing a head space. The top part of the open package is then subsequently sealed together to close the package, and to form the next open package. The first package is subsequently cut and the process is repeated. The package formed in such a way usually have pillow shape.
- Horizontal form-fill sealing processes uses a die having a series of molds therein. In horizontal form-fill sealing processes, a substrate is placed in the die and open package are formed in these molds, which can then be filled, covered with another layer of substrate, and sealed.
- In the third process (formation of package in molds on the surface of a circular drum), a substrate is circulated over the drum and pockets are formed, which pass under a filling machine to fill the open pockets. The filling and sealing takes place at the highest point (top) of the circle described by the drum, e.g. typically, filling is done just before the rotating drum starts the downwards circular motion, and sealing just after the drum starts its downwards motion.
- In any of the processes that involve a step of forming of open package, the substrate can initially be molded or formed into the shape of an open package using thermoforming, vacuum-forming, or both. Thermoforming involves heating the molds and/or the substrate by applying heat in any known way such as contacting the molds with a heating element, or by blowing hot air or using heating lamps to heat the molds and/or the substrate. In the case of vacuum-forming, vacuum assistance is employed to help drive the substrate into the mold. In other embodiments, the two techniques can be combined to form package, for example, the substrate can be formed into open package by vacuum-forming, and heat can be provided to facilitate the process. The open package is then filled with the composition to be contained therein.
- The filled, open package are then closed, which can be done by any method. In some cases, such as in horizontal package-forming processes, the closing is done by continuously feeding a second material or substrate, such as a water-soluble substrate, over and onto the web of open pouches and then sealing the first substrate and second substrate together. The second material or substrate can comprise the water-soluble substrate described herein. In such a process, the first and second substrates are typically sealed in the area between the molds, and, thus, between the package that are being formed in adjacent molds. The sealing can be done by any method. Methods of sealing include heat sealing, solvent welding, and solvent or wet sealing. The sealed webs of package can then be cut by a cutting device, which cuts the package in the web from one another, into separate package.
- The water-soluble package of the present invention comprises a composition which composition may be a fabric treatment composition or a fabric cleaning composition that may be utilized in a method for treating a fabric article. Depending on the composition contained in the water-soluble package the method of treating a fabric article with the water-soluble package may comprise one or more steps selected from the group consisting of: (a) pre-treating the fabric article in a liquor formed by contacting the water-soluble package enclosing a pretreatment composition with water before washing the fabric article; (b) laundering the fabric article with a wash liquor formed by contacting the water soluble package enclosing a cleaning composition with water; (c) contacting the fabric article with the water soluble package enclosing a post-wash treatment composition after the laundering process; and (d) combinations thereof.
- In some embodiments, the method may comprise the step of selecting of only a portion of the water-soluble package for use in treating a fabric article. The desired portion or compartment of the water-soluble package may be cut and/or torn away and either placed on or adhered to the fabric or placed into water to form a relatively small amount of wash liquor which is then used to pre-treat or give a post laundering treatment to the fabric. In this way, the user may customize the fabric treatment method according to the task at hand. In some embodiments, at least a portion of a water-soluble package may be applied to the fabric to be treated using a device like a brush or a sponge. In yet another embodiment, the water-soluble package may be applied directly to the surface of the fabric. Any one or more of the aforementioned steps may be repeated to achieve the desired fabric treatment benefit.
- To improve the dissolution rate of the substrate, disintegrants are preferably applied on the surface of the water-soluble substrate or they may be applied integrated into the water-soluble substrate or any combination thereof, in order to speed up the dissolution when the water-soluble substrate is immersed in water. Where present, the level of disintegrant is from 0.1 to 30%, preferably from 1 to 15%, by weight of said water-soluble substrate. Any suitable disintegrant known in the art may be used.
- Preferred disintegrants for use herein include corn/potato starch, methyl cellulose/celluloses, mineral clay powders, cross-linked cellulose, cross-linked polymer, cross-linked starch.
- Suitable release agents include, but are not limited to, fatty acids and their salts, fatty alcohols, fatty esters, fatty amines, fatty amine acetates and fatty amides. The release agent can be incorporated in the water-soluble substrate in any suitable amount including amounts within the range of from about 0.02% to about 1.5% by weight, or in the range of from about 0.04% to about 0.15% by weight.
- Further optional ingredients may also include suitable extenders, anti-blocking agents, detackifying agents include, but are not limited to: starches, modified starches, crosslinked polyvinylpyrrolidone, crosslinked cellulose, microcrystalline cellulose and metallic oxides. The extender, antiblocking agent, detackifying agent can be present in the water-soluble substrate in any suitable amount including amounts in the range of from about 0.1% to about 25% by weight, preferably in the range of from about 1% to about 15% by weight.
- The composition in the water-soluble package may be any composition that is intended to be directly dosed preferably into a washing machine when the package dissolves or disintegrates. The composition may, for example, be a fabric treatment or fabric laundering, surface care or dishwashing composition. Thus, for example, it may be a dishwashing, water-softening composition, laundry or detergent composition, a rinse-treatment composition, fabric-conditioning composition or pretreatment composition. The composition may be in any form and not limited to powder, granular, tablet, particulate or a combination thereof.
- Suitable composition are generally packaged in amounts of from 0.5 to 100g, preferably from 5 to 100g, especially from 15 to 40g. For example a laundry composition may weight from 0.5 to 40 g preferably from 15 to 40g. Most preferably the amount of composition enables the user to unit dose the composition for each wash cycle of the washing machine or for pre-treatment or rinse-treatment of the textile.
- The invention will be described in more detail with reference to specific embodiments and examples.
- A water-soluble substrate according to the present invention was prepared by mixing the ingredients as disclosed in the Table 1 below in a silverson mixer. In the next step the mixture obtained was cast on a casting belt having a wet film thickness of around 380 microns to 750 microns, thereafter the cast mixture was dried in an oven to provide a film reel which had a final thickness of around 75 micrometer to 200 micrometers.
Table 1 Composition of the water-soluble substrate Ingredients Concentration (wt%) Partially hydrolysed polyvinyl alcohol 65 Polyethylene glycol 3.8 glycerin 2.2 Sodium lauryl ether sulphate 18 Other ingredients 11 - The water-soluble substrate having the composition provided in table 1 was found to be soluble in cold water at a temperature of 10°C.
- Sachets were prepared from the water-soluble substrate prepared in Example 1. Each sachet was made from a single folded sheet of the film, with one folded edge and two heat-sealed edges, the fourth edge being left unsealed for filling purposes. 40g of a powder detergent composition was filled in each sachet and closed by heat-sealing along the fourth edge. It was found that the sachet sealed properly along the edges and no leakage was observed.
- A comparative water-soluble substrate (Ex A) was prepared by mixing the ingredients as disclosed in the Table 2 in a silverson mixer and the solution obtained had a solution density of 0.7 grams/mL. In the next step the mixture obtained was cast on a casting belt having a wet film thickness of 380 micrometres, thereafter the cast mixture was dried in an oven to provide a film reel which had a final thickness of 105 micrometres. The water-soluble substrate obtained had a moisture content of 3.8wt%.
- A water-soluble substrate (Ex 2) according to the present invention was prepared by mixing the ingredients as disclosed in the Table 2 below in a silverson mixer and the solution obtained had a solution density of 0.7 grams/mL. In the next step the mixture obtained was cast on a casting belt having a wet film thickness of 380 micrometres, thereafter the cast mixture was dried in an oven to provide a film reel which had a final thickness of 64 micrometres. The water-soluble substrate obtained had a moisture content of 3.8wt%.
- The composition of the prepared water-soluble substrate as described above are given in Table 2. Both the water-soluble substrates were evaluated for heat seal-ability and the film strength and the details are provided in the Table 2.
Table 2 Ingredients Ex A (wt%) Ex 2 (wt%) Partially hydrolysed polyvinyl alcohol 76.3 76.3 Anionic surfactant (SLES 3EO *) 0 17.7 nonionic surfactant** 17.7 0 Polyethylene glycol PEG-600 3.8 3.8 Glycerin 2.2 2.2 Film strength Poor Good Seal Strength @ 150°C Weak seal and breaks at point of sealing; below this temperature the seal strength is fair. Very Good Weight (grams) 53 32 Thickness (micrometres) 105 64 Solubility @ 10°C Completely soluble in 92 seconds Completely soluble in 70 seconds *Steol ®CS-370 from Stephan Company
** Tween 80 from SigmaAldrich - The data in Table 2 shows that a comparative water-soluble substrate having the non-ionic surfactant takes comparatively longer time to completely dissolve in water at a temperature of 10°C as compared to the water-soluble substrate having an anionic surfactant (Ex 2 according to the present invention). The water-soluble substrate (Ex 2) according to the present invention also shows better film strength and seal strength when compared to the comparative water-soluble substrate (Ex A).
Claims (15)
- A water-soluble package for holding a unit dose composition, the water-soluble package comprising a water-soluble substrate having a thickness from 30 micrometres to 200 micrometres, said substrate comprising:i. a film-forming material; and,ii. at least 8wt% surfactant.wherein the surfactant is an anionic surfactant.
- A package according to claim 1 or 2 wherein the anionic surfactant is selected from alkoxylated C8-18 anionic surfactant, sulphate surfactant, sulfonate surfactant or mixtures thereof.
- A package according to claim 2 wherein the alkoxylated C8-18 anionic surfactant is a sodium lauryl ether sulphate with 1 to 3 ethylene oxide group.
- A package according to any one of the preceding claims comprises a further surfactant selected from a non-ionic surfactant, amphoteric surfactant, cationic surfactant, preferably an alkoxylated non-ionic surfactant.
- A package according to any one of the preceding claims wherein the water-soluble substrate has uniformly dispersed therein gas bubbles having an average diameter less than the total thickness of the substrate.
- A package as claimed in claim 5 wherein the gas bubbles has a total volume from 80 to 99% of the total volume of the substrate.
- A package according to any one of the preceding claims wherein the water-soluble substrate has a basis weight in the range from 35 grams per square metre to 50 grams per square metre.
- A package according to any one of the preceding claims wherein the film-forming material is selected from polyvinyl alcohol, partially hydrolysed polyvinyl acetate, polyvinyl acetate, modified polyvinyl alcohol, carboxy methylcellulose, hydroxypropyl methylcellulose or mixtures thereof.
- A package according to any one of the preceding claims wherein the film-forming material is partially hydrolysed having a degree of hydrolysis ranging from 60% to 99%.
- A package according to any one of the preceding claims wherein the amount of anionic surfactant is from 8wt% to 25wt%.
- A package according to any one of the preceding claims wherein the amount of film- forming material is from 55 to 80% by weight of the water-soluble substrate.
- A package according to any one of the preceding claims wherein the water-soluble substrate comprises a plasticizer selected from the group consisting of glycerol, glycerin, diglycerin, hydroxypropyl glycerine, sorbitol, methylene glycol diethylene glycol, triethylene glycol, tetraethylene glycol, propylene glycol, polyethylene glycols, neopentyl glycol, trimethylolpropame, polyether polyols, ethanolamines, and mixtures thereof.
- A package according to any one of the preceding claims wherein the water-soluble substrate encloses a composition or material that is a powder, particulate, tablet or granular form.
- A package as claimed in claim 13 wherein the composition is a dishwashing composition, fabric treatment composition or a laundry detergent composition.
- Use of a water-soluble package according to any one of the preceding claims for washing dishes, treating textiles or laundering textiles.
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US201762529672P | 2017-07-07 | 2017-07-07 | |
EP17183024 | 2017-07-25 | ||
PCT/EP2018/067944 WO2019007954A1 (en) | 2017-07-07 | 2018-07-03 | Water-soluble package |
Publications (2)
Publication Number | Publication Date |
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EP3649058A1 EP3649058A1 (en) | 2020-05-13 |
EP3649058B1 true EP3649058B1 (en) | 2020-12-23 |
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Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
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EP18734251.4A Active EP3649058B1 (en) | 2017-07-07 | 2018-07-03 | Water-soluble package |
Country Status (6)
Country | Link |
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EP (1) | EP3649058B1 (en) |
CN (1) | CN111051210B (en) |
BR (1) | BR112020000319A2 (en) |
CL (1) | CL2020000042A1 (en) |
PH (1) | PH12020500057A1 (en) |
ZA (1) | ZA202000343B (en) |
Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
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EP4015568A1 (en) * | 2020-12-15 | 2022-06-22 | Monosol, LLC | Water-soluble films, water-soluble unit dose articles, and methods of making and using the same |
CN114539694A (en) * | 2021-04-09 | 2022-05-27 | 广东宝德利新材料科技股份有限公司 | Foam type water-soluble packaging film and preparation method thereof |
Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3695989A (en) | 1970-08-12 | 1972-10-03 | Robert E Albert | Cold water soluble foam plastic package |
US4544693A (en) | 1984-01-03 | 1985-10-01 | Monsanto Company | Water-soluble film |
WO2002060980A2 (en) | 2001-01-31 | 2002-08-08 | The Procter & Gamble Company | Water dissolvable polymer film forming compositions and articles made therefrom |
WO2004016724A1 (en) | 2002-08-14 | 2004-02-26 | Colgate-Palmolive Company | Unit dose detergent film |
Family Cites Families (11)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CA2404675C (en) * | 2000-04-28 | 2008-01-22 | The Procter & Gamble Company | Water-soluble stretchable pouches containing compositions |
GB0123382D0 (en) * | 2001-09-28 | 2001-11-21 | Unilever Plc | Water soluble package and liquid contents thereof |
ES2263844T3 (en) * | 2001-12-07 | 2006-12-16 | Hercules Incorporated | COMPOSITION THAT INCLUDES CELLULOSE FIBER AND AN ANOLIC WATER SOLUBLE COPOLYMER AS WELL AS A METHOD FOR OBTAINING SUCH COMPOSITION. |
GB0222964D0 (en) * | 2002-10-03 | 2002-11-13 | Unilever Plc | Polymeric film for water soluble package |
US20060281658A1 (en) * | 2005-06-08 | 2006-12-14 | Kellar Kenneth E | High water content liquid laundry detergent in water-soluble package |
EP2821474A1 (en) * | 2011-01-12 | 2015-01-07 | The Procter and Gamble Company | Method for controlling the plasticization of a water soluble film |
US20140323383A1 (en) * | 2013-04-26 | 2014-10-30 | The Procter & Gamble Company | Pouch comprising a liquid detergent composition |
CA2945608C (en) * | 2014-04-22 | 2021-06-29 | The Sun Products Corporation | Unit dose detergent compositions |
EP3177702A1 (en) * | 2014-08-07 | 2017-06-14 | The Procter and Gamble Company | Soluble unit dose comprising a laundry detergent composition |
EP3334818B1 (en) * | 2015-08-11 | 2020-11-11 | Unilever PLC | Water-soluble package |
CN106544173A (en) * | 2016-10-28 | 2017-03-29 | 广州市南大实业有限公司 | Solidifying pearl of a kind of softening laundry and preparation method and application |
-
2018
- 2018-07-03 BR BR112020000319-0A patent/BR112020000319A2/en unknown
- 2018-07-03 EP EP18734251.4A patent/EP3649058B1/en active Active
- 2018-07-03 CN CN201880057813.0A patent/CN111051210B/en active Active
-
2020
- 2020-01-06 CL CL2020000042A patent/CL2020000042A1/en unknown
- 2020-01-07 PH PH12020500057A patent/PH12020500057A1/en unknown
- 2020-01-17 ZA ZA2020/00343A patent/ZA202000343B/en unknown
Patent Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3695989A (en) | 1970-08-12 | 1972-10-03 | Robert E Albert | Cold water soluble foam plastic package |
US4544693A (en) | 1984-01-03 | 1985-10-01 | Monsanto Company | Water-soluble film |
WO2002060980A2 (en) | 2001-01-31 | 2002-08-08 | The Procter & Gamble Company | Water dissolvable polymer film forming compositions and articles made therefrom |
WO2004016724A1 (en) | 2002-08-14 | 2004-02-26 | Colgate-Palmolive Company | Unit dose detergent film |
Non-Patent Citations (2)
Title |
---|
SIGMA ALDRICH: "TWEEN® 80 viscous liquid", SIGMA ALDRICH - PRODUCT, 2021, XP055847308, Retrieved from the Internet <URL:https://www.sigmaaldrich.com/NL/en/product/sial/p1754#> |
STEPAN: "STEOL® CS -370", STEPAN - PRODUCT BULLETIN, June 2019 (2019-06-01), pages 1 - 2, XP055847292 |
Also Published As
Publication number | Publication date |
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EP3649058A1 (en) | 2020-05-13 |
CL2020000042A1 (en) | 2020-06-12 |
ZA202000343B (en) | 2021-08-25 |
PH12020500057A1 (en) | 2020-09-28 |
BR112020000319A2 (en) | 2020-07-14 |
CN111051210A (en) | 2020-04-21 |
CN111051210B (en) | 2022-04-12 |
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