AU3370297A - Absorbent articles having an odour control system comprising silica, zeolite and absorbent gelling material - Google Patents
Absorbent articles having an odour control system comprising silica, zeolite and absorbent gelling materialInfo
- Publication number
- AU3370297A AU3370297A AU33702/97A AU3370297A AU3370297A AU 3370297 A AU3370297 A AU 3370297A AU 33702/97 A AU33702/97 A AU 33702/97A AU 3370297 A AU3370297 A AU 3370297A AU 3370297 A AU3370297 A AU 3370297A
- Authority
- AU
- Australia
- Prior art keywords
- absorbent
- zeolite
- absorbent article
- silica
- odour control
- 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.)
- Granted
Links
- 239000002250 absorbent Substances 0.000 title claims description 120
- 230000002745 absorbent Effects 0.000 title claims description 120
- 239000000463 material Substances 0.000 title claims description 72
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 title claims description 63
- 239000010457 zeolite Substances 0.000 title claims description 50
- HNPSIPDUKPIQMN-UHFFFAOYSA-N dioxosilane;oxo(oxoalumanyloxy)alumane Chemical compound O=[Si]=O.O=[Al]O[Al]=O HNPSIPDUKPIQMN-UHFFFAOYSA-N 0.000 title claims description 42
- 229910021536 Zeolite Inorganic materials 0.000 title claims description 40
- 239000000377 silicon dioxide Substances 0.000 title claims description 28
- 239000007788 liquid Substances 0.000 claims description 11
- 239000000203 mixture Substances 0.000 claims description 7
- 239000010410 layer Substances 0.000 description 62
- 239000012530 fluid Substances 0.000 description 25
- 238000009826 distribution Methods 0.000 description 19
- 239000002245 particle Substances 0.000 description 19
- 239000003795 chemical substances by application Substances 0.000 description 14
- 238000003860 storage Methods 0.000 description 13
- -1 with urine Substances 0.000 description 13
- 150000001875 compounds Chemical class 0.000 description 11
- 210000002700 urine Anatomy 0.000 description 10
- 239000000178 monomer Substances 0.000 description 8
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 7
- 239000002253 acid Substances 0.000 description 7
- 239000000499 gel Substances 0.000 description 7
- 229920000642 polymer Polymers 0.000 description 7
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 7
- 239000004698 Polyethylene Substances 0.000 description 6
- 229920002472 Starch Polymers 0.000 description 6
- 239000003431 cross linking reagent Substances 0.000 description 6
- 229920000573 polyethylene Polymers 0.000 description 6
- 235000019698 starch Nutrition 0.000 description 6
- 150000001768 cations Chemical class 0.000 description 5
- 238000010410 dusting Methods 0.000 description 5
- 239000012632 extractable Substances 0.000 description 5
- 239000000835 fiber Substances 0.000 description 5
- 239000003349 gelling agent Substances 0.000 description 5
- 239000000017 hydrogel Substances 0.000 description 5
- 239000008107 starch Substances 0.000 description 5
- QGZKDVFQNNGYKY-UHFFFAOYSA-N Ammonia Chemical compound N QGZKDVFQNNGYKY-UHFFFAOYSA-N 0.000 description 4
- 239000000969 carrier Substances 0.000 description 4
- 239000002808 molecular sieve Substances 0.000 description 4
- 230000007935 neutral effect Effects 0.000 description 4
- URGAHOPLAPQHLN-UHFFFAOYSA-N sodium aluminosilicate Chemical compound [Na+].[Al+3].[O-][Si]([O-])=O.[O-][Si]([O-])=O URGAHOPLAPQHLN-UHFFFAOYSA-N 0.000 description 4
- 239000000725 suspension Substances 0.000 description 4
- 238000012546 transfer Methods 0.000 description 4
- SMZOUWXMTYCWNB-UHFFFAOYSA-N 2-(2-methoxy-5-methylphenyl)ethanamine Chemical compound COC1=CC=C(C)C=C1CCN SMZOUWXMTYCWNB-UHFFFAOYSA-N 0.000 description 3
- NIXOWILDQLNWCW-UHFFFAOYSA-N 2-Propenoic acid Natural products OC(=O)C=C NIXOWILDQLNWCW-UHFFFAOYSA-N 0.000 description 3
- 229920003043 Cellulose fiber Polymers 0.000 description 3
- 150000001412 amines Chemical class 0.000 description 3
- 230000015572 biosynthetic process Effects 0.000 description 3
- 229910052799 carbon Inorganic materials 0.000 description 3
- 229920002678 cellulose Polymers 0.000 description 3
- 239000001913 cellulose Substances 0.000 description 3
- KRKNYBCHXYNGOX-UHFFFAOYSA-N citric acid Chemical compound OC(=O)CC(O)(C(O)=O)CC(O)=O KRKNYBCHXYNGOX-UHFFFAOYSA-N 0.000 description 3
- 238000004891 communication Methods 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 239000000047 product Substances 0.000 description 3
- 230000003014 reinforcing effect Effects 0.000 description 3
- 239000000741 silica gel Substances 0.000 description 3
- 229910002027 silica gel Inorganic materials 0.000 description 3
- 235000012239 silicon dioxide Nutrition 0.000 description 3
- 239000005909 Kieselgur Substances 0.000 description 2
- 239000004743 Polypropylene Substances 0.000 description 2
- 238000010521 absorption reaction Methods 0.000 description 2
- 230000002378 acidificating effect Effects 0.000 description 2
- 239000000853 adhesive Substances 0.000 description 2
- 230000001070 adhesive effect Effects 0.000 description 2
- 229910021529 ammonia Inorganic materials 0.000 description 2
- 239000000872 buffer Substances 0.000 description 2
- 238000004132 cross linking Methods 0.000 description 2
- 125000000524 functional group Chemical group 0.000 description 2
- 230000002209 hydrophobic effect Effects 0.000 description 2
- 229910052914 metal silicate Inorganic materials 0.000 description 2
- 238000006386 neutralization reaction Methods 0.000 description 2
- 229920000058 polyacrylate Polymers 0.000 description 2
- 229920000728 polyester Polymers 0.000 description 2
- 239000002861 polymer material Substances 0.000 description 2
- 229920001155 polypropylene Polymers 0.000 description 2
- 239000011148 porous material Substances 0.000 description 2
- 239000000843 powder Substances 0.000 description 2
- 229920002994 synthetic fiber Polymers 0.000 description 2
- 239000012209 synthetic fiber Substances 0.000 description 2
- 239000012815 thermoplastic material Substances 0.000 description 2
- NLHHRLWOUZZQLW-UHFFFAOYSA-N Acrylonitrile Chemical compound C=CC#N NLHHRLWOUZZQLW-UHFFFAOYSA-N 0.000 description 1
- QGZKDVFQNNGYKY-UHFFFAOYSA-O Ammonium Chemical compound [NH4+] QGZKDVFQNNGYKY-UHFFFAOYSA-O 0.000 description 1
- BVKZGUZCCUSVTD-UHFFFAOYSA-M Bicarbonate Chemical class OC([O-])=O BVKZGUZCCUSVTD-UHFFFAOYSA-M 0.000 description 1
- 206010016322 Feeling abnormal Diseases 0.000 description 1
- 239000004831 Hot glue Substances 0.000 description 1
- 206010021639 Incontinence Diseases 0.000 description 1
- 239000004677 Nylon Substances 0.000 description 1
- 229910019142 PO4 Inorganic materials 0.000 description 1
- 239000004952 Polyamide Substances 0.000 description 1
- 239000004372 Polyvinyl alcohol Substances 0.000 description 1
- 229920001328 Polyvinylidene chloride Polymers 0.000 description 1
- OFOBLEOULBTSOW-UHFFFAOYSA-N Propanedioic acid Natural products OC(=O)CC(O)=O OFOBLEOULBTSOW-UHFFFAOYSA-N 0.000 description 1
- 239000004115 Sodium Silicate Substances 0.000 description 1
- 229920002125 Sokalan® Polymers 0.000 description 1
- NINIDFKCEFEMDL-UHFFFAOYSA-N Sulfur Chemical compound [S] NINIDFKCEFEMDL-UHFFFAOYSA-N 0.000 description 1
- 239000005864 Sulphur Substances 0.000 description 1
- DAKWPKUUDNSNPN-UHFFFAOYSA-N Trimethylolpropane triacrylate Chemical compound C=CC(=O)OCC(CC)(COC(=O)C=C)COC(=O)C=C DAKWPKUUDNSNPN-UHFFFAOYSA-N 0.000 description 1
- 229920000717 Visqueen Polymers 0.000 description 1
- 150000007513 acids Chemical class 0.000 description 1
- 229920006397 acrylic thermoplastic Polymers 0.000 description 1
- 239000012790 adhesive layer Substances 0.000 description 1
- 239000002390 adhesive tape Substances 0.000 description 1
- 150000001299 aldehydes Chemical class 0.000 description 1
- 229910052783 alkali metal Inorganic materials 0.000 description 1
- 150000001340 alkali metals Chemical class 0.000 description 1
- 229910052784 alkaline earth metal Inorganic materials 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical class [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 description 1
- 229910000323 aluminium silicate Inorganic materials 0.000 description 1
- 150000003863 ammonium salts Chemical class 0.000 description 1
- 230000003466 anti-cipated effect Effects 0.000 description 1
- 239000004599 antimicrobial Substances 0.000 description 1
- 230000004888 barrier function Effects 0.000 description 1
- 239000008280 blood Substances 0.000 description 1
- 210000004369 blood Anatomy 0.000 description 1
- 210000001124 body fluid Anatomy 0.000 description 1
- 239000010839 body fluid Substances 0.000 description 1
- KGBXLFKZBHKPEV-UHFFFAOYSA-N boric acid Chemical compound OB(O)O KGBXLFKZBHKPEV-UHFFFAOYSA-N 0.000 description 1
- 239000004327 boric acid Substances 0.000 description 1
- 229910052791 calcium Inorganic materials 0.000 description 1
- 229920002301 cellulose acetate Polymers 0.000 description 1
- 229910052681 coesite Inorganic materials 0.000 description 1
- 239000002131 composite material Substances 0.000 description 1
- 229920001577 copolymer Polymers 0.000 description 1
- 229910052906 cristobalite Inorganic materials 0.000 description 1
- 239000013078 crystal Substances 0.000 description 1
- 229910002026 crystalline silica Inorganic materials 0.000 description 1
- 238000005520 cutting process Methods 0.000 description 1
- 239000007857 degradation product Substances 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 235000014113 dietary fatty acids Nutrition 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 125000001495 ethyl group Chemical group [H]C([H])([H])C([H])([H])* 0.000 description 1
- 238000000605 extraction Methods 0.000 description 1
- 239000000194 fatty acid Substances 0.000 description 1
- 229930195729 fatty acid Natural products 0.000 description 1
- 150000004665 fatty acids Chemical class 0.000 description 1
- 239000000945 filler Substances 0.000 description 1
- 239000010408 film Substances 0.000 description 1
- 239000000706 filtrate Substances 0.000 description 1
- 238000001914 filtration Methods 0.000 description 1
- 239000003292 glue Substances 0.000 description 1
- 229910052739 hydrogen Inorganic materials 0.000 description 1
- 239000001257 hydrogen Substances 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 239000004615 ingredient Substances 0.000 description 1
- 229910052806 inorganic carbonate Inorganic materials 0.000 description 1
- 229920000592 inorganic polymer Polymers 0.000 description 1
- 150000002576 ketones Chemical class 0.000 description 1
- 230000014759 maintenance of location Effects 0.000 description 1
- VZCYOOQTPOCHFL-UPHRSURJSA-N maleic acid Chemical compound OC(=O)\C=C/C(O)=O VZCYOOQTPOCHFL-UPHRSURJSA-N 0.000 description 1
- 239000011976 maleic acid Substances 0.000 description 1
- FPYJFEHAWHCUMM-UHFFFAOYSA-N maleic anhydride Chemical compound O=C1OC(=O)C=C1 FPYJFEHAWHCUMM-UHFFFAOYSA-N 0.000 description 1
- 229910052748 manganese Inorganic materials 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 230000000873 masking effect Effects 0.000 description 1
- 239000000155 melt Substances 0.000 description 1
- 210000004914 menses Anatomy 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 150000002736 metal compounds Chemical class 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- ZIUHHBKFKCYYJD-UHFFFAOYSA-N n,n'-methylenebisacrylamide Chemical compound C=CC(=O)NCNC(=O)C=C ZIUHHBKFKCYYJD-UHFFFAOYSA-N 0.000 description 1
- 231100000344 non-irritating Toxicity 0.000 description 1
- 239000004745 nonwoven fabric Substances 0.000 description 1
- 229920001778 nylon Polymers 0.000 description 1
- 229910052760 oxygen Inorganic materials 0.000 description 1
- 239000001301 oxygen Substances 0.000 description 1
- 239000010451 perlite Substances 0.000 description 1
- 235000019362 perlite Nutrition 0.000 description 1
- 235000021317 phosphate Nutrition 0.000 description 1
- 150000003013 phosphoric acid derivatives Chemical class 0.000 description 1
- 229920003023 plastic Polymers 0.000 description 1
- 239000004033 plastic Substances 0.000 description 1
- 239000002985 plastic film Substances 0.000 description 1
- 229920006255 plastic film Polymers 0.000 description 1
- 229920003229 poly(methyl methacrylate) Polymers 0.000 description 1
- 239000004584 polyacrylic acid Substances 0.000 description 1
- 229920002647 polyamide Polymers 0.000 description 1
- 229920005862 polyol Polymers 0.000 description 1
- 150000003077 polyols Chemical class 0.000 description 1
- 229920002689 polyvinyl acetate Polymers 0.000 description 1
- 239000011118 polyvinyl acetate Substances 0.000 description 1
- 229920002451 polyvinyl alcohol Polymers 0.000 description 1
- 229920002620 polyvinyl fluoride Polymers 0.000 description 1
- 239000005033 polyvinylidene chloride Substances 0.000 description 1
- 229910052700 potassium Inorganic materials 0.000 description 1
- 150000003839 salts Chemical class 0.000 description 1
- 150000004760 silicates Chemical class 0.000 description 1
- 239000002356 single layer Substances 0.000 description 1
- 229910052708 sodium Inorganic materials 0.000 description 1
- 239000011734 sodium Substances 0.000 description 1
- NTHWMYGWWRZVTN-UHFFFAOYSA-N sodium silicate Chemical compound [Na+].[Na+].[O-][Si]([O-])=O NTHWMYGWWRZVTN-UHFFFAOYSA-N 0.000 description 1
- 229910052911 sodium silicate Inorganic materials 0.000 description 1
- 238000003756 stirring Methods 0.000 description 1
- 229910052682 stishovite Inorganic materials 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 239000000758 substrate Substances 0.000 description 1
- 150000003467 sulfuric acid derivatives Chemical class 0.000 description 1
- 239000006228 supernatant Substances 0.000 description 1
- 230000008961 swelling Effects 0.000 description 1
- 230000002195 synergetic effect Effects 0.000 description 1
- 238000003786 synthesis reaction Methods 0.000 description 1
- ISXSCDLOGDJUNJ-UHFFFAOYSA-N tert-butyl prop-2-enoate Chemical compound CC(C)(C)OC(=O)C=C ISXSCDLOGDJUNJ-UHFFFAOYSA-N 0.000 description 1
- 229920001169 thermoplastic Polymers 0.000 description 1
- 239000004416 thermosoftening plastic Substances 0.000 description 1
- VZCYOOQTPOCHFL-UHFFFAOYSA-N trans-butenedioic acid Natural products OC(=O)C=CC(O)=O VZCYOOQTPOCHFL-UHFFFAOYSA-N 0.000 description 1
- 229910052723 transition metal Inorganic materials 0.000 description 1
- 150000003624 transition metals Chemical class 0.000 description 1
- VPYJNCGUESNPMV-UHFFFAOYSA-N triallylamine Chemical compound C=CCN(CC=C)CC=C VPYJNCGUESNPMV-UHFFFAOYSA-N 0.000 description 1
- 229910052905 tridymite Inorganic materials 0.000 description 1
- 229940096522 trimethylolpropane triacrylate Drugs 0.000 description 1
- 239000010455 vermiculite Substances 0.000 description 1
- 235000019354 vermiculite Nutrition 0.000 description 1
- 229910052902 vermiculite Inorganic materials 0.000 description 1
- 238000009736 wetting Methods 0.000 description 1
- 239000002759 woven fabric Substances 0.000 description 1
Classifications
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
- A61F13/00—Bandages or dressings; Absorbent pads
- A61F13/15—Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators
- A61F13/84—Accessories, not otherwise provided for, for absorbent pads
- A61F13/8405—Additives, e.g. for odour, disinfectant or pH control
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
- A61F13/00—Bandages or dressings; Absorbent pads
- A61F13/15—Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61L—METHODS OR APPARATUS FOR STERILISING MATERIALS OR OBJECTS IN GENERAL; DISINFECTION, STERILISATION OR DEODORISATION OF AIR; CHEMICAL ASPECTS OF BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES; MATERIALS FOR BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES
- A61L15/00—Chemical aspects of, or use of materials for, bandages, dressings or absorbent pads
- A61L15/16—Bandages, dressings or absorbent pads for physiological fluids such as urine or blood, e.g. sanitary towels, tampons
- A61L15/18—Bandages, dressings or absorbent pads for physiological fluids such as urine or blood, e.g. sanitary towels, tampons containing inorganic materials
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61L—METHODS OR APPARATUS FOR STERILISING MATERIALS OR OBJECTS IN GENERAL; DISINFECTION, STERILISATION OR DEODORISATION OF AIR; CHEMICAL ASPECTS OF BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES; MATERIALS FOR BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES
- A61L15/00—Chemical aspects of, or use of materials for, bandages, dressings or absorbent pads
- A61L15/16—Bandages, dressings or absorbent pads for physiological fluids such as urine or blood, e.g. sanitary towels, tampons
- A61L15/42—Use of materials characterised by their function or physical properties
- A61L15/46—Deodorants or malodour counteractants, e.g. to inhibit the formation of ammonia or bacteria
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61L—METHODS OR APPARATUS FOR STERILISING MATERIALS OR OBJECTS IN GENERAL; DISINFECTION, STERILISATION OR DEODORISATION OF AIR; CHEMICAL ASPECTS OF BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES; MATERIALS FOR BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES
- A61L2300/00—Biologically active materials used in bandages, wound dressings, absorbent pads or medical devices
- A61L2300/10—Biologically active materials used in bandages, wound dressings, absorbent pads or medical devices containing or releasing inorganic materials
- A61L2300/102—Metals or metal compounds, e.g. salts such as bicarbonates, carbonates, oxides, zeolites, silicates
Landscapes
- Health & Medical Sciences (AREA)
- Animal Behavior & Ethology (AREA)
- General Health & Medical Sciences (AREA)
- Engineering & Computer Science (AREA)
- Public Health (AREA)
- Epidemiology (AREA)
- Life Sciences & Earth Sciences (AREA)
- Veterinary Medicine (AREA)
- Chemical & Material Sciences (AREA)
- Materials Engineering (AREA)
- Hematology (AREA)
- Biomedical Technology (AREA)
- Heart & Thoracic Surgery (AREA)
- Vascular Medicine (AREA)
- Inorganic Chemistry (AREA)
- Absorbent Articles And Supports Therefor (AREA)
- Orthopedics, Nursing, And Contraception (AREA)
- Solid-Sorbent Or Filter-Aiding Compositions (AREA)
Description
ABSORBENT ARTICLES HAVING AN ODOUR CONTROL SYSTEM
COMPRISING SILICA, ZEOLITE AND
ABSORBENT GELLING MATERIAL
Field of the Invention
The present invention relates to absorbent articles, in particular sanitary napkins and panty liners comprising compositions providing odour control benefits.
Background of the Invention
Whilst the primary focus of absorbent articles remains the ability of these articles to absorb and retain fluids, another important area of development in this field is the control of odourous compounds contained within the absorbed fluids or their degradation products. There are a wide range of compounds which may be present in an absorbent article during use which result in the formation of malodourous. These compounds include fatty acids, ammonia, amines, sulphur containing compounds and ketones and aldehydes.
The art is replete with descriptions of various odour controlling agents for use in absorbent articles in order to address the problem of malodour formation. These agents can typically be classified according to the type of odour the agent is intended to combat. Odours may be classified as being acidic, basic or neutral. Acidic odour controlling agents have a pH greater than 7 and typically include inorganic carbonates, bicarbonates, phosphates and sulphates. Basic odour controlling agents have a pH of less than 7 and include compounds such as citric acid, boric acid and maleic acid.
Neutral odour controlling agents have a pH of approximately 7. Examples of these types of compounds include activated carbons, clays, zeolites, silicas and starches. Such neutral odour controlling agents are most commonly utilised in absorbent articles.
For example EPO 348 978 discloses an absorbent article comprising an odour control system wherein the neutral odour controlling particles are selected from carbon, clays, silicas, zeolites and molecular sieves. EPO 510 619 relates to absorbent article comprising odour control complex including a combination of at least 2 agents selected form a group which includes zeolites and silica gels. Similarly, WO 91/12029 discloses the combination of zeolites and absorbent gelling materials to provide improvement in the control of ammonia odours.
Carbon has been noted in the art as being particularly effective over a broad spectrum of odours. However, it is not favoured due to its black appearance, which is considered unacceptable by consumers. For example EPO 282 287 discloses a deodouriser suitable for use in a sanitary napkin which is non black (i.e. carbon free) comprising at least one compound selected from metal silicates and metal salts of aluminum containing silicates selected from certain transition metals and group II metals.
The currently preferred odour control agent is zeolite, particularly the so- called intermediate and high ratio zeolites. Although zeolite does not have a negative aesthetic profile, its main drawback is its lack of effective odour control over a broad range of odour types and the cost of such materials particularly the intermediate and high ratio zeolites.
Hence, there still exists a need to provide an odour controlling agent or system which has an acceptable aesthetic profile such that it is light coloured and provides effective odour control over a wide range of malodourous compounds which may be present in an absorbent article and which is not expensive.
It has now been observed that this need may be addressed by the use of the specific combination of zeolite, silica and an absorbent gelling material. Surprisingly, it has been observed that this combination of zeolite, silica and absorbent gelling material results in a synergic odour control effect not previously anticipated
Summary of the Invention
The present invention relates to an absorbent article comprising a liquid pervious topsheet, a backsheet and an absorbent core intermediate said topsheet and said backsheet, characterised in that said absorbent article comprises an odour control system comprising the combination of zeolite, silica and absorbent gelling material.
Detailed Description of the Invention
The present invention relates to absorbent disposable articles such as sanitary napkins, baby diapers, incontinence products and panty liners. The absorbent article of the present invention comprises the essential features of a liquid pervious topsheet a backsheet and an absorbent core intermediate the topsheet and the backsheet. The absorbent article further comprises as an essential component an odour control system.
Odour control system
According to the present invention the absorbent article comprises as an essential feature an odour control system which comprises the combination of zeolite, silica and absorbent gelling material. The odour control system has been found to provide effective odour control over a broad spectrum of odours, typically found in absorbent articles.
Absorbent gelling materials
The odour control system thus comprises as an essential component an absorbent gelling material. As is well-known from recent commercial practice, absorbent gelling materials (sometimes referred to as "super-sorbers") are becoming broadly used in absorbent articles. AGM's are materials which have fluid-absorbing properties. Such materials form hydrogels on contact with water (e.g., with urine, blood, and the like). One highly preferred type of hydrogel- forming, absorbent gelling material is based on polyacids, especially polyacrylic acid. Hydrogel- forming polymeric materials of this type are those which, upon contact with fluids (i.e., liquids) such as water or body fluids, imbibe such fluids and thereby form hydrogels. These preferred absorbent gelling materials will generally comprise substantially water-insoluble, slightly cross-linked, partially
neutralized, hydrogel-forming polymer materials prepared from polymerizabte, unsaturated, acid-containing monomers. In such materials, the polymeric component formed from unsaturated, acid-containing monomers may comprise the entire gelling agent or may be grafted onto other types of polymer moieties such as starch or cellulose. Acrylic acid grafted starch materials are of this latter type. Thus, the preferred absorbent gelling materials include hydrolyzed acrylonitrile grafted starch, acrylic acid grafted starch, polyacrylates, maleic anhydride-based copolymers and combinations thereof. Especially preferred absorbent gelling materials are the polyacrylates and acrylic acid grafted starch.
Whatever the nature of the polymer components of the preferred absorbent gelling materials, such materials will in general be slightly cross- linked. Crosslinking serves to render these preferred hydrogel-forming absorbent materials substantially water-insoluble, and cross-linking also in part determines the gel volume and extractable polymer characteristics of the hydrogels formed therefrom. Suitable cross-linking agents are well known in the art and include, for example, (1) compounds having at least two polymerizable double bonds; (2) compounds having at least one polymerizable double bond and at least one functional group reactive with the acid-containing monomer material; (3) compounds having at least two functional groups reactive with the acid-containing monomer materials; and (4) polyvalent metal compounds which can from ionic cross-linkages. Cross-linking agents of the foregoing types are described in greater detail in Masuda et al; U.S. Patent 4,076,663; Issued February 28, 1978. Preferred cross-linking agents are the di- or polyesters of unsaturated mono-or polycarboxylic acids with polyols, the bisacrylamides and the di-or triallyl amines. Especially preferred cross-linking agents are N,N'- methylenebisacrylamide, trimethylol propane triacrylate and triallyl amine. The cross-linking agent will generally comprise from about 0.001 mole percent to 5 mole percent of the preferred materials. More preferably, the cross-linking agent will comprise from about 0.01 mole percent to 3 mole percent of the gelling materials used herein.
The preferred, slightly cross-linked, hydrogel-forming absorbent gelling materials will generally be employed in their partially neutralized form. For purposes described herein, such materials are considered partially neutralized when at least 25 mole percent, and preferably at least 50 mole percent of
monomers used to form the polymer are acid group-containing monomers which have been neutralized with a salt-forming cation. Suitable salt-forming cations include alkali metal, ammonium, substituted ammonium and amines. This percentage of the total monomers utilized which are neutralized acid group- containing monomers is referred to as the "degree of neutralization". Typically, commercial absorbent gelling materials have a degree of neutralization somewhat less than 90%.
The preferred absorbent gelling materials used herein are those which have a relatively high capacity for imbibing fluids encountered in the absorbent articles; this capacity can be quantified by referencing the "gel volume" of said absorbent gelling materials. Gel volume can be defined in terms of the amount of synthetic urine absorbed by any given absorbent gelling agent buffer and is specified as grams of synthetic urine per gram of gelling agent.
Gel volume in synthetic urine (see Brandt, et al, below) can be determined by forming a suspension of about 0.1-0.2 parts of dried absorbent gelling material to be tested with about 20 parts of synthetic urine. This suspension is maintained at ambient temperature under gentle stirring for about 1 hour so that swelling equilibrium is attained. The gel volume (grams of synthetic urine per gram of absorbent gelling material) is then calculated from the weight fraction of the gelling agent in the suspension and the ratio of the liquid volume excluded from the formed hydrogel to the total volume of the suspension. The preferred absorbent gelling materials useful in this invention will have a gel volume of from about 20 to 70 grams, more preferably from about 30 to 60 grams, of synthetic urine per gram of absorbent gelling material.
Another feature of the most highly preferred absorbent gelling materials relates to the level of extractable polymer material present in said materials. Extractable polymer levels can be determined by contacting a sample of preferred absorbent gelling material with a synthetic urine solution for the substantial period of time (e.g., at least 16 hours) which is needed to reach extraction equilibrium, by then filtering the formed hydrogel from the supernatant liquid, and finally by then determining the polymer content of the filtrate. The particular procedure used to determine extractable polymer content of the preferred absorbent gelling agent buffers herein is set forth in Brandt, Goldman and Inglin; U.S. Patent 4,654,039; Issues March 31 ,1987, Reissue 32,649, The
absorbent gelling materials which are especially useful in the absorbent articles herein are those which have an equilibrium extractables content in synthetic urine of no more than about 17%, preferably no more than about 10% by weight of the absorbent gelling material.
The absorbent gelling materials herein before described are typically used in the form of discrete particles. Such absorbent gelling materials can be of any desired shape, e.g., spherical or semi-spherical, cubic, rod-like polyhedral, etc. Shapes having a large greatest dimension/smallest dimension ratio, like needles and flakes, are also contemplated for use herein. Agglomerates of absorbent gelling material particles may also be used.
The size of the absorbent gelling material particles may vary over a wide range. For reason of industrial hygiene, average particle sizes smaller than about 30 microns are less desirable. Particles having a smallest dimension larger than about 2mm may also cause a feeling of grittyness in the absorbent article, which is undesirable from a consumer aesthetics standpoint. Furthermore, rate of fluid absorption can be affected by particle size. Larger particles have very much reduced rates of absorption. Preferred for use herein are absorbent gelling material s particles substantially all of which have a particle size of from about 30 microns to about 2mm. "Particle Size as used herein means the weighted average of the smallest dimension of the individual particles.
The amount of absorbent gelling material particles used in the present invention will typically range from 20grτr2 to 150grrr2, preferably from 40grτr2 to 110grτr2, more preferably from 55gm-2 to 85gm-2.
Zeolite odour control agent
Suitable zeolite odour control material for use in the odour control system of the present invention is well know in the literature and is described in the following reference texts: ZEOLITE SYNTHESIS, ACS Symposium Series 398, Eds. M. L. Occelli and H. E Robson (1989) pages 2-7; ZEOLITE MOLECULAR
SIEVES, Structure, Chemistry and Use, by D. W. Breck, John Wiley and Sons (1974) pages 245-250, 313-314 and 348-352; MODERN APPLICATIONS OF MOLECULAR SIEVE ZEOLITES, Ph.D. Dissertation of S. M. Kuznicki, U. of Utah (1980), available from University of Microfilms International, Ann Arbor, Michigan, pages 2-8.
Zeolites are crystalline aluminosilicates of group IA and group HA elements such as Na, K, Mn, Ca and are chemically represented by the empirical formula :
M2/nO . AI2O3. ySiθ2 . wH2θ
where y is 2 or greater, n is the cation valence, and w is the water content in the voids of the zeolite.
Structurally, zeolites are complex, crystalline inorganic polymers based on an infinitely extending framework of AIO4 and S1O4 tetrahedra linked to each other by sharing of oxygen ions. This framework structure contains channels or interconnected voids that are occupied by the cations and water molecules.
The structural formula of a zeolite is based on the crystal unit cell, the smallest unit of structure, represented by
Mχ/n [(AI02)x (SiO2)y ] . wH2O
where n is the valence of cation M, w is the number of water molecules per unit cell, x and y are the total number of tedrahedra per unit cell, y/x usually having values of 1-5.
Zeolites may be naturally derived or synthetically manufactured. The synthetic zeolites being preferred for use herein and include zeolite A, zeolite P, zeolite Y, zeolite X, zeolite DAY, zeolite ZSM-5, and mixtures thereof. Most preferred are zeolite A and zeolite Y and mixtures thereof.
According to the present invention the zeolite is preferably hydrophobic. This is typically achieved by increasing the molar ratio of the Siθ2 to AIO2
content such that the ratio of x to y is at least 1 , preferably from 1 to 500, most preferably from 1 to 6.
The absorbent article preferably comprises from 40grτr2 to 90gnrr2, more preferably from 55gnrr2 to 85gm-2, most preferably from 60gm-2 to 65grτr2 of said zeolite.
Silica odour control agent
According to the present invention the odour control system comprises as an essential component silica. Silica i.e. silicon dioxide, Siθ2 exists in a variety of crystalline forms and amorphous modifications, and can be derived from both natural sources e.g. diatomaceous earth and synthetic sources, any of which are suitable for use herein. Silica molecular sieves do not fall within the definition of silica as used herein. In particular, silicas having a high surface area or in agglomerated form are preferred. Preferably the silica is in a highly purified form such that is contains at least 90%, preferably 95%, more preferably 99% silicon dioxide. Most preferably the silica is silica gel having a 100% silica content. Alternatively the silica may be provided from other sources such as metal silicates including sodium silicate.
Preferred silica include non crystalline silica (e.g. amorphous silica, appearing as white free flowing powder), having a particle size 4-12 microns, a pore volume 1-2 g/ml or a granular silica of aggregated particles (e.g. silica gel, having a maximum particle dimensions of 1.6 mm in diameter). More preferred is silica gel having a medium pore diameter of from 40 A to 150 A, preferably from 60A to 130 A, most preferably from 90 A to 110 A, a surface area of from 100m2/g to 800m2/g, preferably from 200m2/g to 550m2/g, most preferably from 250m2/g to 350 m2/g and an average particle size of 15 to 200microns, preferably from 63 to 200 microns.
The absorbent article preferably comprises from 40gm-2 to 100gnrr2, more preferably from 60grτr2 to 90gm-2, most preferably from 60gm~2 to 65gττr2 of silica based on 100% purity.
The ratio of absorbent gelling material to silica to zeolite is typically in the range of from 1 :5:1 to 1 :1 :5, preferably from 1 :3:1 to 1 :1 :3, most preferably from 1:1 :1 to 1 :1.5:1.5.
According to the present invention the weight of the odour control system which may be used in the absorbent article can be readily determined by the skilled person bearing in mind the absorbent article dimensions. For example, when utilised in a sanitary napkin or panty liner, the absorbent article may comprise from 0.5g to 5g, preferably from 1g to 3g, most preferably from 1.5g to 2.5g of said odour control system.
According to the present invention the odour control system may comprise additional optional components such as antimicrobial agents, perfuming ingredients, masking agents, activated carbon, and chelants, all of which are known to the those skilled in the art.
The odour control system may be incorporated into the absorbent article by any of the methods disclosed in the art, for example it may be layered on the core of the absorbent article or mixed within the fibres of the absorbent core. The odour control system is preferably incorporated between two layers of cellulose tissue. Optionally, the system may be bonded between two cellulose tissue layers with, for example, a hot melt adhesive or any suitable bonding system.
More preferably the odour control system is incorporated in a layered structure in accordance with the disclosure of WO 94/01069 or Italian patent application number TO 93A 001028. TO 93A 001028 describes a layered structure substantially as described in WO 94/01069 with the exception that TO 93A 001028 comprises a much higher quantity of absorbent gelling material (AGM) in the intermediate layer which is between the fibrous layers (120gm-2) that would be incorporated as an optional component in the present invention. The intermediate layer comprises, in particular, a polyethylene powder as thermoplastic material which is mixed with the premixed odour control system of the present invention. The mixture is then heated such that the polyethylene melts and glues the laminate layers and components together. The bridges which form the bond points between the fibrous layers involve particles of AGM
as well as particles of thermoplastic material. (The absorbent capacity of the AGM is unaffected by bonding.) The adhesive lines are preferably also placed on the edges of the laminate to ensure that the edges of the laminate stick and any loose odour control material does not fall out of the laminate.
Absorbent core
According to the present invention, the absorbent core can include the following components: (a) an optional primary fluid distribution layer preferably together with a secondary optional fluid distribution layer; (b) a fluid storage layer; (c) an optional fibrous ("dusting") layer underlying the storage layer; and (d) other optional components. According to the present invention the absorbent core may have any thickness depending on the end use envisioned.
a Primary/Secondary Fluid Distribution Layer
One optional component of the absorbent core according to the present invention is a primary fluid distribution layer and a secondary fluid distribution layer. The primary distribution layer typically underlies the topsheet and is in fluid communication therewith. The topsheet transfers the acquired fluid to this primary distribution layer for ultimate distribution to the storage layer. This transfer of fluid through the primary distribution layer occurs not only in the thickness, but also along the length and width directions of the absorbent product. The also optional but preferred secondary distribution layer typically underlies the primary distribution layer and is in fluid communication therewith. The purpose of this secondary distribution layer is to readily acquire fluid from the primary distribution layer and transfer it rapidly to the underlying storage layer. This helps the fluid capacity of the underlying storage layer to be fully utilised. The fluid distribution layers can be comprised of any material typical for such distribution layers. In particular fibrous layers maintain the capillaries between fibers even when wet are useful as distribution layers.
b Fluid Storage Layer
Positioned in fluid communication with, and typically underlying the primary or secondary distribution layers, is a fluid storage layer. The fluid storage layer can comprise any usual absorbent material or combinations thereof. It preferably comprises absorbent gelling materials in combination with suitable carriers.
Suitable carriers include materials which are conventionally utilised in absorbent structures such as natural, modified or synthetic fibers, particularly modified or non-modified cellulose fibers, in the form of fluff and/or tissues. Suitable carriers can be used together with the absorbent gelling material, however, they can also be used alone or in combinations. Most preferred are tissue or tissue laminates in the context of sanitary napkins and panty liners.
An embodiment of the absorbent structure made according to the present invention may comprise multiple layers comprises a double layer tissue laminate formed by folding the tissue onto itself. These layers can be joined to each other for example by adhesive or by mechanical interlocking or by hydrogen bridge bands. Absorbent gelling material or other optional material can be comprised between the layers.
Modified cellulose fibers such as the stiffened cellulose fibers can also be used. Synthetic fibers can also be used and include those made of cellulose acetate, polyvinyl fluoride, polyvinylidene chloride, acrylics (such as Orion), polyvinyl acetate, non-soluble polyvinyl alcohol, polyethylene, polypropylene, polyamides (such as nylon), polyesters, bicomponent fibers, tricomponent fibers, mixtures thereof and the like. Preferably, the fiber surfaces are hydrophilic or are treated to be hydrophilic. The storage layer can also include filler materials, such as Perlite, diatomaceous earth, Vermiculite, etc., to improve liquid retention.
If the absorbent gelling material is dispersed non-homogeneously in a carrier, the storage layer can nevertheless be locally homogenous, i.e. have a distribution gradient in one or several directions within the dimensions of the storage layer. Non-homogeneous distribution can also refer to laminates of carriers enclosing absorbent gelling materials partially or fully. c Optional Fibrous ("Dusting") Layer
An optional component for inclusion in the absorbent core according to the present invention is a fibrous layer adjacent to, and typically underlying the storage layer. This underlying fibrous layer is typically referred to as a "dusting" layer since it provides a substrate on which to deposit absorbent gelling material in the storage layer during manufacture of the absorbent core. Indeed, in those instances where the absorbent gelling material is in the form of macro structures such as fibers, sheets or strips, this fibrous "dusting" layer need not be included. However, this "dusting" layer provides some additional fluid-handling capabilities such as rapid wicking of fluid along the length of the pad.
d Other Optional Components of the absorbent structure
The absorbent core according to the present invention can include other optional components normally present in absorbent webs. For example, a reinforcing scrim can be positioned within the respective layers, or between the respective layers, of the absorbent core. Such reinforcing scrims should be of such configuration as to not form interfacial barriers to fluid transfer. Given the structural integrity that usually occurs as a result of thermal bonding, reinforcing scrims are usually not required for thermally bonded absorbent structures.
The topsheet
According to the present invention the absorbent article comprises as an essential component a topsheet The topsheet may comprise a single layer or a multiplicity of layers. In a preferred embodiment the topsheet comprises a first layer which provides the user facing surface of the topsheet and a second layer between the first layer and the absorbent structure/core.
The topsheet as a whole and hence each layer individually needs to be compliant, soft feeling, and non-irritating to the wearer's skin. It also can have elastic characteristics allowing it to be stretched in one or two directions. According to the present invention the topsheet may be formed from any of the materials available for this purpose and known in the art, such as woven and non woven fabrics and films. In a preferred embodiment of the present invention at least one of the layers, preferably the upper layer, of the topsheet comprises a hydrophobic, liquid permeable apertured polymeric film. Preferably, the upper
layer is provided by a film material having apertures which are provided to facilitate liquid transport from the wearer facing surface towards the absorbent structure. If present the lower layer preferably comprises a non woven layer, an apertured formed film or an airlaid tissue.
Backsheet
According to the present invention the absorbent article comprises as an essential component a backsheet. The backsheet primarily prevents the extrudes absorbed and contained in the absorbent structure from wetting articles that contact the absorbent product such as underpants, pants, pyjamas and undergarments. The backsheet is preferably impervious to liquids (e.g. menses and/or urine) and is preferably manufactured from a thin plastic film, although other flexible liquid impervious materials can also be used. As used herein, the term "flexible" refers to materials that are compliant and will readily conform to the general shape and contours of the human body. The backsheet also can have elastic characteristics allowing it to stretch in one or two directions.
The backsheet typically extends across the whole of the absorbent structure and can extend into and form part of or all of the preferred sideflaps, side wrapping elements or wings.
The backsheet can comprise a woven or nonwoven material, polymeric films such as thermoplastic films of polyethylene or polypropylene, or composite materials such as a film-coated nonwoven material. Preferably, the backsheet is a polyethylene film having a thickness of from about 0.012 mm (0.5 mil) to about 0.051 mm (2.0 mils).
Exemplary polyethylene films are manufactured by Clopay Corporation of Cincinnati, Ohio, under the designation P18-0401 and by Ethyl Corporation, Visqueen Division, of Terre Haute, Indiana, under the designation XP-39385. The backsheet is preferably embossed and/or matt finished to provide a more clothlike appearance. Further, the backsheet can permit vapours to escape from the absorbent structure, i.e. be breathable, while still preventing extrudates from
passing through the backsheet. Also breathable backsheets comprising several layers, e.g. film plus non-woven structures, can be used.
Examples:
The sanitary napkins used in the following examples were Always (Always is a registered Trade Mark) as sold by the Procter & Gamble Company. Each napkin was opened by cutting the wrap around the perforated coverstock at its bottom face approximately along a longitudinal edge of the release paper which covers the external adhesive layer. The side of the absorbent fibrous core is then exposed by slightly shifting the water impermeable plastic bottom layer and subsequently, the fibrous core is split into two halves, each having approximately the same thickness, along a plane which is parallel to the plane of the napkin itself. The odour control system is homogeneously distributed between these tow fibrous layers which are then joined together to reconstitute the absorbent core.
The water impermeable inner backsheet is then put back into its original position and the wrap around perforated coverstock is sealed along the cut by means of a e.g. a double sided adhesive tape.
Samples were produced using the method above, containing the odour control systems as described hereinbelow.
The zeolite (0.5g) used was zeolite A, Wessalith CS, available from Degussa AG. The silica (0.5g) used was Syloblanc 82 available from Grace GmbH or Silica FK 700, available from Degussa. The AGM (0.7g) used was XZ 9589001 , available from Dow Chemicals.
Claims (11)
1. An absorbent article comprising a liquid pervious topsheet, a backsheet and an absorbent core intermediate said backsheet and said topsheet, characterised in that said absorbent article napkin comprises an odour control system comprising the combination of zeolite, silica and absorbent gelling material.
2. An absorbent article according to claims 1, wherein said zeolite has a ratio of Siθ2 to AI02 of at least 1.
3. An absorbent article according to claim 2, wherein said zeolite has ratio of Siθ2 to AI02 of from 1 to 500.
4. An absorbent article according to any one of the preceding claims, wherein said zeolite is selected from zeolite A, zeolite X, zeolite Y, zeolite DAY , zeolite ZSM-5 and mixtures thereof.
5. An absorbent article according to any one of the previous claims, wherein said zeolite is zeolite A and zeolite Y and mixtures thereof.
6. An absorbent article according to any one of the preceding claims, wherein the ratio by weight of said absorbent gelling material to silica to zeolite is from 1 :5:1 to 1 :1:5.
7. An absorbent article according to any one of the preceding claims, wherein said absorbent article comprises from 0.5g to 5g of said odour control system.
8. An absorbent article according to any one of the preceding claims, wherein said article comprises from 40gnr2 to 90gm"2 zeolite.
9. An absorbent article according to any one of the preceding claims, wherein said article comprises from 40grτr2 to 100grτr2 silica.
10. An absorbent article according to any one of the preceding claims, wherein said article comprises from 20gm-2 to 150grτr2 absorbent gelling material.
11. An absorbent article according to any one of the preceding claims, wherein said absorbent article is a sanitary napkin or a panty liner.
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP96109174 | 1996-06-07 | ||
EP96109174 | 1996-06-07 | ||
PCT/US1997/008972 WO1997046192A1 (en) | 1996-06-07 | 1997-05-23 | Absorbent articles having an odour control system comprising silica, zeolite and absorbent gelling material |
Publications (2)
Publication Number | Publication Date |
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AU3370297A true AU3370297A (en) | 1998-01-05 |
AU734552B2 AU734552B2 (en) | 2001-06-14 |
Family
ID=8222866
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
AU33702/97A Ceased AU734552B2 (en) | 1996-06-07 | 1997-05-23 | Absorbent articles having an odour control system comprising silica, zeolite and absorbent gelling material |
Country Status (6)
Country | Link |
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EP (1) | EP0963186A4 (en) |
JP (1) | JPH11513917A (en) |
KR (1) | KR100344139B1 (en) |
AU (1) | AU734552B2 (en) |
CA (1) | CA2257626A1 (en) |
WO (1) | WO1997046192A1 (en) |
Families Citing this family (19)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US6245693B1 (en) * | 1996-12-20 | 2001-06-12 | The Procter & Gamble Company | Laminated composite absorbent structure comprising odor control means |
SE9902207L (en) | 1999-06-11 | 2000-12-12 | Sca Hygiene Prod Ab | Use of moisture-tight packaging for absorbent articles containing moisture-sensitive additives |
SE0101033L (en) | 2001-03-23 | 2002-04-09 | Sca Hygiene Prod Ab | Belief protection and the use of low-hygroscopic materials to make a panty protection |
GB0202061D0 (en) * | 2002-01-30 | 2002-03-13 | Reckitt Benckiser Uk Ltd | Chemical compositions amd methods |
AU2005337071B2 (en) | 2005-10-05 | 2011-11-24 | Sca Hygiene Products Ab | Absorbent article comprising a thin film including an active agent |
EP2258408A1 (en) | 2006-04-05 | 2010-12-08 | The Procter & Gamble Company | Absorbent articles including odour control system |
US8748690B2 (en) | 2006-11-17 | 2014-06-10 | Sca Hygiene Products Ab | Absorbent articles comprising acidic cellulosic fibers and an organic zinc salt |
US9555150B2 (en) | 2006-11-17 | 2017-01-31 | Sca Hygiene Products Ab | Absorbent articles comprising an organic zinc salt and an anti-bacterial agent or alkali metal chloride or alkaline earth metal chloride |
US8835511B2 (en) | 2007-04-04 | 2014-09-16 | The Procter & Gamble Company | Absorbent articles including an odor control system |
JP4667485B2 (en) * | 2008-04-21 | 2011-04-13 | 花王株式会社 | Absorbent articles |
ES2629176T3 (en) | 2014-06-20 | 2017-08-07 | Omya International Ag | Method for odor control |
US10653571B2 (en) | 2015-12-10 | 2020-05-19 | The Procter & Gamble Company | Article comprising odor control composition |
US10888635B2 (en) | 2016-06-16 | 2021-01-12 | The Procter & Gamble Company | Absorbent article having odor absorbing material |
WO2017214924A1 (en) * | 2016-06-16 | 2017-12-21 | The Procter & Gamble Company | Specification absorbent article having odor absorbing material |
EP3326659B1 (en) | 2016-11-23 | 2019-11-13 | Toiletry Sales Limited | An absorbent article comprising an odor control mixture |
WO2018118512A1 (en) * | 2016-12-19 | 2018-06-28 | The Procter & Gamble Company | Article with zeolites |
KR101944109B1 (en) * | 2018-06-19 | 2019-01-30 | 주식회사 일레븐모먼트 | Functionality patchs for hygiene pads comprising ferrite sintered compounds and zeolites |
TWI818054B (en) | 2018-08-31 | 2023-10-11 | 美商陶氏全球科技有限責任公司 | Fiber with odor control component |
KR102000149B1 (en) * | 2019-01-08 | 2019-08-14 | 주식회사 일레븐코퍼레이션 | Functionality patchs for hygiene pads |
Family Cites Families (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CA2011670A1 (en) * | 1989-03-20 | 1990-09-20 | Diane L. Furio | Absorbent structures with odor control |
EP0389015A3 (en) * | 1989-03-20 | 1991-08-28 | The Procter & Gamble Company | Absorbent structures with odor control material |
US5407442A (en) * | 1990-02-12 | 1995-04-18 | Karapasha; Nancy | Carbon-containing odor controlling compositions |
ATE207764T1 (en) * | 1993-06-18 | 2001-11-15 | Sanyo Chemical Ind Ltd | ABSORBENT COMPOSITION AND DISPOSABLE DIAPER COMPRISING THIS COMPOSITION |
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1997
- 1997-05-23 WO PCT/US1997/008972 patent/WO1997046192A1/en not_active Application Discontinuation
- 1997-05-23 EP EP97929709A patent/EP0963186A4/en not_active Ceased
- 1997-05-23 CA CA002257626A patent/CA2257626A1/en not_active Abandoned
- 1997-05-23 KR KR19980710017A patent/KR100344139B1/en not_active IP Right Cessation
- 1997-05-23 JP JP10500654A patent/JPH11513917A/en active Pending
- 1997-05-23 AU AU33702/97A patent/AU734552B2/en not_active Ceased
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CA2257626A1 (en) | 1997-12-11 |
EP0963186A4 (en) | 2000-12-06 |
JPH11513917A (en) | 1999-11-30 |
KR100344139B1 (en) | 2005-01-15 |
EP0963186A1 (en) | 1999-12-15 |
MX9810338A (en) | 1999-04-01 |
AU734552B2 (en) | 2001-06-14 |
KR20000016433A (en) | 2000-03-25 |
WO1997046192A1 (en) | 1997-12-11 |
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