JP2014176510A - Base material for absorber - Google Patents
Base material for absorber Download PDFInfo
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- JP2014176510A JP2014176510A JP2013052362A JP2013052362A JP2014176510A JP 2014176510 A JP2014176510 A JP 2014176510A JP 2013052362 A JP2013052362 A JP 2013052362A JP 2013052362 A JP2013052362 A JP 2013052362A JP 2014176510 A JP2014176510 A JP 2014176510A
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- JP
- Japan
- Prior art keywords
- base material
- sheet
- absorbent
- inorganic compound
- compound particles
- Prior art date
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- Granted
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- 239000000463 material Substances 0.000 title claims abstract description 56
- 239000006096 absorbing agent Substances 0.000 title claims abstract description 31
- 239000002245 particle Substances 0.000 claims abstract description 66
- 239000000835 fiber Substances 0.000 claims abstract description 59
- 150000002484 inorganic compounds Chemical class 0.000 claims abstract description 51
- 229910010272 inorganic material Inorganic materials 0.000 claims abstract description 51
- 229920003043 Cellulose fiber Polymers 0.000 claims abstract description 26
- 238000001179 sorption measurement Methods 0.000 claims abstract description 13
- 239000007788 liquid Substances 0.000 claims abstract description 12
- 230000002745 absorbent Effects 0.000 claims description 50
- 239000002250 absorbent Substances 0.000 claims description 50
- 229920002678 cellulose Polymers 0.000 claims description 45
- 239000001913 cellulose Substances 0.000 claims description 45
- 238000000034 method Methods 0.000 claims description 17
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical group O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims description 13
- 239000000758 substrate Substances 0.000 claims description 13
- 239000000470 constituent Substances 0.000 claims description 11
- BQCADISMDOOEFD-UHFFFAOYSA-N Silver Chemical compound [Ag] BQCADISMDOOEFD-UHFFFAOYSA-N 0.000 claims description 9
- 229910052709 silver Inorganic materials 0.000 claims description 9
- 239000004332 silver Substances 0.000 claims description 9
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims description 7
- 239000000377 silicon dioxide Substances 0.000 claims description 7
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 claims description 6
- KDLHZDBZIXYQEI-UHFFFAOYSA-N Palladium Chemical compound [Pd] KDLHZDBZIXYQEI-UHFFFAOYSA-N 0.000 claims description 6
- BASFCYQUMIYNBI-UHFFFAOYSA-N platinum Chemical compound [Pt] BASFCYQUMIYNBI-UHFFFAOYSA-N 0.000 claims description 6
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 claims description 5
- GWEVSGVZZGPLCZ-UHFFFAOYSA-N Titan oxide Chemical compound O=[Ti]=O GWEVSGVZZGPLCZ-UHFFFAOYSA-N 0.000 claims description 5
- 239000011148 porous material Substances 0.000 claims description 5
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims description 3
- 229910021536 Zeolite Inorganic materials 0.000 claims description 3
- HCHKCACWOHOZIP-UHFFFAOYSA-N Zinc Chemical compound [Zn] HCHKCACWOHOZIP-UHFFFAOYSA-N 0.000 claims description 3
- 229910017052 cobalt Inorganic materials 0.000 claims description 3
- 239000010941 cobalt Substances 0.000 claims description 3
- GUTLYIVDDKVIGB-UHFFFAOYSA-N cobalt atom Chemical compound [Co] GUTLYIVDDKVIGB-UHFFFAOYSA-N 0.000 claims description 3
- 229910052802 copper Inorganic materials 0.000 claims description 3
- 239000010949 copper Substances 0.000 claims description 3
- HNPSIPDUKPIQMN-UHFFFAOYSA-N dioxosilane;oxo(oxoalumanyloxy)alumane Chemical compound O=[Si]=O.O=[Al]O[Al]=O HNPSIPDUKPIQMN-UHFFFAOYSA-N 0.000 claims description 3
- PCHJSUWPFVWCPO-UHFFFAOYSA-N gold Chemical compound [Au] PCHJSUWPFVWCPO-UHFFFAOYSA-N 0.000 claims description 3
- 229910052737 gold Inorganic materials 0.000 claims description 3
- 239000010931 gold Substances 0.000 claims description 3
- 229910052742 iron Inorganic materials 0.000 claims description 3
- 229910052759 nickel Inorganic materials 0.000 claims description 3
- TWNQGVIAIRXVLR-UHFFFAOYSA-N oxo(oxoalumanyloxy)alumane Chemical compound O=[Al]O[Al]=O TWNQGVIAIRXVLR-UHFFFAOYSA-N 0.000 claims description 3
- 229910052763 palladium Inorganic materials 0.000 claims description 3
- 229910052697 platinum Inorganic materials 0.000 claims description 3
- 235000012239 silicon dioxide Nutrition 0.000 claims description 3
- 239000010457 zeolite Substances 0.000 claims description 3
- 229910052725 zinc Inorganic materials 0.000 claims description 3
- 239000011701 zinc Substances 0.000 claims description 3
- 229910052751 metal Inorganic materials 0.000 claims description 2
- 239000002184 metal Substances 0.000 claims description 2
- 229910052757 nitrogen Inorganic materials 0.000 claims description 2
- 239000004408 titanium dioxide Substances 0.000 claims description 2
- 230000000694 effects Effects 0.000 abstract description 18
- 239000000126 substance Substances 0.000 abstract description 12
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- 239000004745 nonwoven fabric Substances 0.000 description 17
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- 230000000052 comparative effect Effects 0.000 description 13
- 238000012360 testing method Methods 0.000 description 13
- 239000006185 dispersion Substances 0.000 description 12
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- 235000019645 odor Nutrition 0.000 description 9
- 239000007787 solid Substances 0.000 description 8
- 229920000742 Cotton Polymers 0.000 description 7
- SBZXBUIDTXKZTM-UHFFFAOYSA-N diglyme Chemical compound COCCOCCOC SBZXBUIDTXKZTM-UHFFFAOYSA-N 0.000 description 6
- 229920001131 Pulp (paper) Polymers 0.000 description 5
- 229910021529 ammonia Inorganic materials 0.000 description 5
- 238000011282 treatment Methods 0.000 description 5
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 5
- 241000196324 Embryophyta Species 0.000 description 4
- LYCAIKOWRPUZTN-UHFFFAOYSA-N ethylene glycol Natural products OCCO LYCAIKOWRPUZTN-UHFFFAOYSA-N 0.000 description 4
- 238000011156 evaluation Methods 0.000 description 4
- -1 glycol ethers Chemical class 0.000 description 4
- 239000002105 nanoparticle Substances 0.000 description 4
- 229920002620 polyvinyl fluoride Polymers 0.000 description 4
- 241000218631 Coniferophyta Species 0.000 description 3
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 description 3
- KFZMGEQAYNKOFK-UHFFFAOYSA-N Isopropanol Chemical compound CC(C)O KFZMGEQAYNKOFK-UHFFFAOYSA-N 0.000 description 3
- OKKJLVBELUTLKV-UHFFFAOYSA-N Methanol Chemical compound OC OKKJLVBELUTLKV-UHFFFAOYSA-N 0.000 description 3
- 230000000844 anti-bacterial effect Effects 0.000 description 3
- 230000005540 biological transmission Effects 0.000 description 3
- 238000009835 boiling Methods 0.000 description 3
- 239000002781 deodorant agent Substances 0.000 description 3
- 239000002655 kraft paper Substances 0.000 description 3
- 239000003960 organic solvent Substances 0.000 description 3
- 230000000704 physical effect Effects 0.000 description 3
- 239000002994 raw material Substances 0.000 description 3
- 239000006228 supernatant Substances 0.000 description 3
- RJBIZCOYFBKBIM-UHFFFAOYSA-N 2-[2-(2-methoxyethoxy)ethoxy]propane Chemical compound COCCOCCOC(C)C RJBIZCOYFBKBIM-UHFFFAOYSA-N 0.000 description 2
- XTHFKEDIFFGKHM-UHFFFAOYSA-N Dimethoxyethane Chemical compound COCCOC XTHFKEDIFFGKHM-UHFFFAOYSA-N 0.000 description 2
- 206010021639 Incontinence Diseases 0.000 description 2
- UQSXHKLRYXJYBZ-UHFFFAOYSA-N Iron oxide Chemical compound [Fe]=O UQSXHKLRYXJYBZ-UHFFFAOYSA-N 0.000 description 2
- LSDPWZHWYPCBBB-UHFFFAOYSA-N Methanethiol Chemical compound SC LSDPWZHWYPCBBB-UHFFFAOYSA-N 0.000 description 2
- 239000004677 Nylon Substances 0.000 description 2
- 239000000654 additive Substances 0.000 description 2
- 239000003242 anti bacterial agent Substances 0.000 description 2
- 238000004061 bleaching Methods 0.000 description 2
- 238000004332 deodorization Methods 0.000 description 2
- XLLIQLLCWZCATF-UHFFFAOYSA-N ethylene glycol monomethyl ether acetate Natural products COCCOC(C)=O XLLIQLLCWZCATF-UHFFFAOYSA-N 0.000 description 2
- 210000003608 fece Anatomy 0.000 description 2
- AMWRITDGCCNYAT-UHFFFAOYSA-L hydroxy(oxo)manganese;manganese Chemical compound [Mn].O[Mn]=O.O[Mn]=O AMWRITDGCCNYAT-UHFFFAOYSA-L 0.000 description 2
- 239000000395 magnesium oxide Substances 0.000 description 2
- CPLXHLVBOLITMK-UHFFFAOYSA-N magnesium oxide Inorganic materials [Mg]=O CPLXHLVBOLITMK-UHFFFAOYSA-N 0.000 description 2
- AXZKOIWUVFPNLO-UHFFFAOYSA-N magnesium;oxygen(2-) Chemical compound [O-2].[Mg+2] AXZKOIWUVFPNLO-UHFFFAOYSA-N 0.000 description 2
- 239000000203 mixture Substances 0.000 description 2
- BSAIUMLZVGUGKX-UHFFFAOYSA-N non-2-enal Chemical compound CCCCCCC=CC=O BSAIUMLZVGUGKX-UHFFFAOYSA-N 0.000 description 2
- 229920001778 nylon Polymers 0.000 description 2
- 239000011164 primary particle Substances 0.000 description 2
- ZUHZGEOKBKGPSW-UHFFFAOYSA-N tetraglyme Chemical compound COCCOCCOCCOCCOC ZUHZGEOKBKGPSW-UHFFFAOYSA-N 0.000 description 2
- GETQZCLCWQTVFV-UHFFFAOYSA-N trimethylamine Chemical compound CN(C)C GETQZCLCWQTVFV-UHFFFAOYSA-N 0.000 description 2
- 210000002700 urine Anatomy 0.000 description 2
- LZDKZFUFMNSQCJ-UHFFFAOYSA-N 1,2-diethoxyethane Chemical compound CCOCCOCC LZDKZFUFMNSQCJ-UHFFFAOYSA-N 0.000 description 1
- RRQYJINTUHWNHW-UHFFFAOYSA-N 1-ethoxy-2-(2-ethoxyethoxy)ethane Chemical compound CCOCCOCCOCC RRQYJINTUHWNHW-UHFFFAOYSA-N 0.000 description 1
- FPZWZCWUIYYYBU-UHFFFAOYSA-N 2-(2-ethoxyethoxy)ethyl acetate Chemical compound CCOCCOCCOC(C)=O FPZWZCWUIYYYBU-UHFFFAOYSA-N 0.000 description 1
- CUDYYMUUJHLCGZ-UHFFFAOYSA-N 2-(2-methoxypropoxy)propan-1-ol Chemical compound COC(C)COC(C)CO CUDYYMUUJHLCGZ-UHFFFAOYSA-N 0.000 description 1
- BDLXTDLGTWNUFM-UHFFFAOYSA-N 2-[(2-methylpropan-2-yl)oxy]ethanol Chemical compound CC(C)(C)OCCO BDLXTDLGTWNUFM-UHFFFAOYSA-N 0.000 description 1
- POAOYUHQDCAZBD-UHFFFAOYSA-N 2-butoxyethanol Chemical compound CCCCOCCO POAOYUHQDCAZBD-UHFFFAOYSA-N 0.000 description 1
- CRWNQZTZTZWPOF-UHFFFAOYSA-N 2-methyl-4-phenylpyridine Chemical compound C1=NC(C)=CC(C=2C=CC=CC=2)=C1 CRWNQZTZTZWPOF-UHFFFAOYSA-N 0.000 description 1
- 229910018072 Al 2 O 3 Inorganic materials 0.000 description 1
- PIGFYZPCRLYGLF-UHFFFAOYSA-N Aluminum nitride Chemical compound [Al]#N PIGFYZPCRLYGLF-UHFFFAOYSA-N 0.000 description 1
- 241000609240 Ambelania acida Species 0.000 description 1
- 235000017166 Bambusa arundinacea Nutrition 0.000 description 1
- 235000017491 Bambusa tulda Nutrition 0.000 description 1
- 240000000560 Citrus x paradisi Species 0.000 description 1
- RWSOTUBLDIXVET-UHFFFAOYSA-N Dihydrogen sulfide Chemical compound S RWSOTUBLDIXVET-UHFFFAOYSA-N 0.000 description 1
- 102000004190 Enzymes Human genes 0.000 description 1
- 108090000790 Enzymes Proteins 0.000 description 1
- 241000219146 Gossypium Species 0.000 description 1
- 240000000797 Hibiscus cannabinus Species 0.000 description 1
- 240000006240 Linum usitatissimum Species 0.000 description 1
- 235000004431 Linum usitatissimum Nutrition 0.000 description 1
- 240000000907 Musa textilis Species 0.000 description 1
- CBENFWSGALASAD-UHFFFAOYSA-N Ozone Chemical compound [O-][O+]=O CBENFWSGALASAD-UHFFFAOYSA-N 0.000 description 1
- 244000082204 Phyllostachys viridis Species 0.000 description 1
- 235000015334 Phyllostachys viridis Nutrition 0.000 description 1
- 239000004698 Polyethylene Substances 0.000 description 1
- KJTLSVCANCCWHF-UHFFFAOYSA-N Ruthenium Chemical compound [Ru] KJTLSVCANCCWHF-UHFFFAOYSA-N 0.000 description 1
- 229910004298 SiO 2 Inorganic materials 0.000 description 1
- CDBYLPFSWZWCQE-UHFFFAOYSA-L Sodium Carbonate Chemical compound [Na+].[Na+].[O-]C([O-])=O CDBYLPFSWZWCQE-UHFFFAOYSA-L 0.000 description 1
- LSNNMFCWUKXFEE-UHFFFAOYSA-N Sulfurous acid Chemical compound OS(O)=O LSNNMFCWUKXFEE-UHFFFAOYSA-N 0.000 description 1
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 description 1
- 241000186514 Warburgia ugandensis Species 0.000 description 1
- XLOMVQKBTHCTTD-UHFFFAOYSA-N Zinc monoxide Chemical compound [Zn]=O XLOMVQKBTHCTTD-UHFFFAOYSA-N 0.000 description 1
- 150000001298 alcohols Chemical class 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 239000010905 bagasse Substances 0.000 description 1
- 239000011425 bamboo Substances 0.000 description 1
- 238000010009 beating Methods 0.000 description 1
- INAHAJYZKVIDIZ-UHFFFAOYSA-N boron carbide Chemical compound B12B3B4C32B41 INAHAJYZKVIDIZ-UHFFFAOYSA-N 0.000 description 1
- BMRWNKZVCUKKSR-UHFFFAOYSA-N butane-1,2-diol Chemical compound CCC(O)CO BMRWNKZVCUKKSR-UHFFFAOYSA-N 0.000 description 1
- 206010061592 cardiac fibrillation Diseases 0.000 description 1
- 230000003197 catalytic effect Effects 0.000 description 1
- CETPSERCERDGAM-UHFFFAOYSA-N ceric oxide Chemical compound O=[Ce]=O CETPSERCERDGAM-UHFFFAOYSA-N 0.000 description 1
- 229910000422 cerium(IV) oxide Inorganic materials 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 238000005520 cutting process Methods 0.000 description 1
- 230000018044 dehydration Effects 0.000 description 1
- 238000006297 dehydration reaction Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 229940019778 diethylene glycol diethyl ether Drugs 0.000 description 1
- XXJWXESWEXIICW-UHFFFAOYSA-N diethylene glycol monoethyl ether Chemical compound CCOCCOCCO XXJWXESWEXIICW-UHFFFAOYSA-N 0.000 description 1
- 229940075557 diethylene glycol monoethyl ether Drugs 0.000 description 1
- 229910001873 dinitrogen Inorganic materials 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 238000002296 dynamic light scattering Methods 0.000 description 1
- 239000003623 enhancer Substances 0.000 description 1
- 230000002600 fibrillogenic effect Effects 0.000 description 1
- 239000000945 filler Substances 0.000 description 1
- 239000011121 hardwood Substances 0.000 description 1
- 239000001257 hydrogen Substances 0.000 description 1
- 229910052739 hydrogen Inorganic materials 0.000 description 1
- 229910000037 hydrogen sulfide Inorganic materials 0.000 description 1
- WGCNASOHLSPBMP-UHFFFAOYSA-N hydroxyacetaldehyde Natural products OCC=O WGCNASOHLSPBMP-UHFFFAOYSA-N 0.000 description 1
- 229910052588 hydroxylapatite Inorganic materials 0.000 description 1
- 229910052741 iridium Inorganic materials 0.000 description 1
- GKOZUEZYRPOHIO-UHFFFAOYSA-N iridium atom Chemical compound [Ir] GKOZUEZYRPOHIO-UHFFFAOYSA-N 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 239000002082 metal nanoparticle Substances 0.000 description 1
- GDOPTJXRTPNYNR-UHFFFAOYSA-N methyl-cyclopentane Natural products CC1CCCC1 GDOPTJXRTPNYNR-UHFFFAOYSA-N 0.000 description 1
- 244000005700 microbiome Species 0.000 description 1
- ZKATWMILCYLAPD-UHFFFAOYSA-N niobium pentoxide Inorganic materials O=[Nb](=O)O[Nb](=O)=O ZKATWMILCYLAPD-UHFFFAOYSA-N 0.000 description 1
- URLJKFSTXLNXLG-UHFFFAOYSA-N niobium(5+);oxygen(2-) Chemical compound [O-2].[O-2].[O-2].[O-2].[O-2].[Nb+5].[Nb+5] URLJKFSTXLNXLG-UHFFFAOYSA-N 0.000 description 1
- 230000009965 odorless effect Effects 0.000 description 1
- 229910052762 osmium Inorganic materials 0.000 description 1
- SYQBFIAQOQZEGI-UHFFFAOYSA-N osmium atom Chemical compound [Os] SYQBFIAQOQZEGI-UHFFFAOYSA-N 0.000 description 1
- 230000003647 oxidation Effects 0.000 description 1
- 238000007254 oxidation reaction Methods 0.000 description 1
- SIWVEOZUMHYXCS-UHFFFAOYSA-N oxo(oxoyttriooxy)yttrium Chemical compound O=[Y]O[Y]=O SIWVEOZUMHYXCS-UHFFFAOYSA-N 0.000 description 1
- NQBRDZOHGALQCB-UHFFFAOYSA-N oxoindium Chemical compound [O].[In] NQBRDZOHGALQCB-UHFFFAOYSA-N 0.000 description 1
- 239000010893 paper waste Substances 0.000 description 1
- XYJRXVWERLGGKC-UHFFFAOYSA-D pentacalcium;hydroxide;triphosphate Chemical compound [OH-].[Ca+2].[Ca+2].[Ca+2].[Ca+2].[Ca+2].[O-]P([O-])([O-])=O.[O-]P([O-])([O-])=O.[O-]P([O-])([O-])=O XYJRXVWERLGGKC-UHFFFAOYSA-D 0.000 description 1
- 229920001495 poly(sodium acrylate) polymer Polymers 0.000 description 1
- 229920000728 polyester Polymers 0.000 description 1
- 229920000573 polyethylene Polymers 0.000 description 1
- 239000005077 polysulfide Substances 0.000 description 1
- 229920001021 polysulfide Polymers 0.000 description 1
- 150000008117 polysulfides Polymers 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 238000004537 pulping Methods 0.000 description 1
- 238000010298 pulverizing process Methods 0.000 description 1
- 238000007670 refining Methods 0.000 description 1
- 230000003014 reinforcing effect Effects 0.000 description 1
- 229910052703 rhodium Inorganic materials 0.000 description 1
- 239000010948 rhodium Substances 0.000 description 1
- MHOVAHRLVXNVSD-UHFFFAOYSA-N rhodium atom Chemical compound [Rh] MHOVAHRLVXNVSD-UHFFFAOYSA-N 0.000 description 1
- 230000000630 rising effect Effects 0.000 description 1
- 229910052707 ruthenium Inorganic materials 0.000 description 1
- 238000004904 shortening Methods 0.000 description 1
- HBMJWWWQQXIZIP-UHFFFAOYSA-N silicon carbide Chemical compound [Si+]#[C-] HBMJWWWQQXIZIP-UHFFFAOYSA-N 0.000 description 1
- 238000004513 sizing Methods 0.000 description 1
- 239000002002 slurry Substances 0.000 description 1
- NNMHYFLPFNGQFZ-UHFFFAOYSA-M sodium polyacrylate Chemical compound [Na+].[O-]C(=O)C=C NNMHYFLPFNGQFZ-UHFFFAOYSA-M 0.000 description 1
- 239000011122 softwood Substances 0.000 description 1
- 239000004575 stone Substances 0.000 description 1
- 239000010902 straw Substances 0.000 description 1
- 229920000247 superabsorbent polymer Polymers 0.000 description 1
- 239000000725 suspension Substances 0.000 description 1
- 239000010936 titanium Substances 0.000 description 1
- 229910052719 titanium Inorganic materials 0.000 description 1
- YFNKIDBQEZZDLK-UHFFFAOYSA-N triglyme Chemical compound COCCOCCOCCOC YFNKIDBQEZZDLK-UHFFFAOYSA-N 0.000 description 1
- 238000001238 wet grinding Methods 0.000 description 1
- 239000002023 wood Substances 0.000 description 1
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Abstract
Description
本発明は、紙おむつ等の衛生用品に用いられる吸収体の基材(吸収体用基材)に関する。 The present invention relates to an absorbent base material (absorbent base material) used for sanitary goods such as disposable diapers.
吸収体用基材は、紙おむつ、失禁パッド、生理用ナプキン等に排泄物等に含まれる水分を吸収する吸収体の基材として使用されている。しかし、紙おむつ等の衛生用品使用時に排泄物に含まれる例えば、尿、便などの有害成分や微生物の作用により発生する悪臭が問題となっている。従って、吸収体用基材に例えば、消臭、抗菌等の効果のある機能性成分を含有させ、吸収体用基材にこれらの機能を付加させることができれば上記問題を解決することが可能であると考えられる。又、吸収体用基材に含有させる成分は人体の皮膚に接触する可能性があるため、安全性の高いものが望まれている。
吸収体用基材に機能を付加した例として、グレープフルーツ種子等の抗菌成分を含有した吸収剤組成物(特許文献1)、針葉樹木から抽出された消臭成分を含有した吸収体(特許文献2)等が報告されている。しかし、これらの吸収体用基材には、抗菌剤や消臭剤などの化学物質を使用しており、充分な効果を得るためには、吸収体に大量の化学物質を含有させる必要があり、コストの上昇が懸念される。化学物質の含有量が低くても効果を発揮する吸収体用基材の開発が望まれている。
もし、吸収体の基材の物性を変えることにより機能性物質の効果が発揮され易い状態にすることができれば、さらに効果を増大させることができる。また、添加する機能性物質の添加量を低減できるため、製造コストを低減できる。
The absorbent base material is used as a base material of an absorbent body that absorbs moisture contained in excreta and the like in paper diapers, incontinence pads, sanitary napkins and the like. However, for example, harmful components such as urine and stool and bad odors caused by the action of microorganisms are included in the excrement when using sanitary goods such as disposable diapers. Therefore, for example, if the absorbent base material contains functional components having effects such as deodorization and antibacterial, and these functions can be added to the absorbent base material, the above problem can be solved. It is believed that there is. Moreover, since the component contained in the base material for absorbers may come into contact with the skin of the human body, a highly safe one is desired.
As an example of adding a function to the base material for the absorber, an absorbent composition containing an antibacterial component such as grapefruit seed (Patent Document 1), an absorber containing a deodorant component extracted from coniferous trees (Patent Document 2) ) Etc. have been reported. However, these absorber base materials use chemical substances such as antibacterial agents and deodorants, and in order to obtain sufficient effects, it is necessary to contain a large amount of chemical substances in the absorber. There are concerns about rising costs. Development of a base material for an absorber that exhibits an effect even when the content of chemical substances is low is desired.
If the effect of the functional substance can be easily exhibited by changing the physical properties of the base material of the absorbent body, the effect can be further increased. Moreover, since the addition amount of the functional substance to add can be reduced, manufacturing cost can be reduced.
本発明の課題は、おむつ等の衛生用品使用時に発生する悪臭に対して優れた吸着効果を有する吸収体用基材を提供することにある。 The subject of this invention is providing the base material for absorbers which has the adsorption | suction effect outstanding with respect to the bad smell generate | occur | produced at the time of hygiene articles, such as a diaper.
本発明は以下の発明を含有する。
(1)液透過性表面シートと、液不透過性裏面シートと、これら両シートの間に配置された吸収シートとを構成要素とする吸収体用基材において、少なくとも1つの構成要素の比表面積(前記比表面積は窒素吸着法により測定)が、10m2/g以上であることを特徴とする吸収体用基材。
The present invention includes the following inventions.
(1) A specific surface area of at least one component in an absorbent base material including a liquid-permeable top sheet, a liquid-impermeable back sheet, and an absorbent sheet disposed between the two sheets. (The specific surface area is measured by a nitrogen adsorption method) is 10 m 2 / g or more.
(2)前記吸収性素材の構成要素の平均孔径が1〜1000nmであることを特徴とする(1)に記載の吸収体用基材。 (2) The absorbent substrate according to (1), wherein an average pore diameter of the constituent elements of the absorbent material is 1-1000 nm.
(3)前記吸収性素材の構成要素がセルロース繊維を含有することを特徴とする(1)項または(2)に記載の吸収体用基材。 (3) The base material for an absorbent body according to (1) or (2), wherein the constituent element of the absorbent material contains cellulose fiber.
(4)前記セルロース繊維は、平均繊維径が1〜1000nmのセルロース微細繊維であることを特徴とする(3)項に記載の吸収体用基材。 (4) The cellulose base material according to the item (3), wherein the cellulose fiber is a fine cellulose fiber having an average fiber diameter of 1 to 1000 nm.
(5)前記吸収性素材の構成要素がセルロース繊維以外に無機化合物粒子を含有することを特徴とする(1)項〜(4)項のいずれか1項に記載の吸収体用基材。 (5) The absorbent base material according to any one of (1) to (4), wherein the constituent of the absorbent material contains inorganic compound particles in addition to cellulose fibers.
(6)前記セルロース繊維と無機化合物粒子を含有するシートに含まれるセルロース繊維と無機化合物粒子の比率が、10000:1〜1:1であることを特徴とする(5)項に記載の吸収体用基材。 (6) The absorbent according to (5), wherein the ratio of cellulose fibers and inorganic compound particles contained in the sheet containing cellulose fibers and inorganic compound particles is 10,000: 1 to 1: 1. Substrate for use.
(7)前記無機化合物粒子の平均粒子径が1〜2000nmであることを特徴とする(5)項または(6)項に記載の吸収体用基材。 (7) The substrate for an absorber according to (5) or (6), wherein the inorganic compound particles have an average particle diameter of 1 to 2000 nm.
(8)前記無機化合物粒子が、金属にシリカが結合した粒子であることを特徴とする(5)項〜(7)項のいずれか1項に記載の吸収体用基材。 (8) The base material for an absorber according to any one of (5) to (7), wherein the inorganic compound particles are particles in which silica is bonded to a metal.
(9)前記無機化合物粒子が、酸化アルミニウム、二酸化珪素、二酸化チタン、金、白金、銀、銅、亜鉛、鉄、ニッケル、コバルト、パラジウム、ゼオライトから選択される少なくとも1種以上であることを特徴とする(5)項〜(7)項のいずれか1項に記載の吸収体用基材。 (9) The inorganic compound particles are at least one selected from aluminum oxide, silicon dioxide, titanium dioxide, gold, platinum, silver, copper, zinc, iron, nickel, cobalt, palladium, and zeolite. The base material for an absorber according to any one of items (5) to (7).
本発明の吸収体用基材は、おむつ等の衛生用品使用時に発生する悪臭に対して優れた吸着効果を有する。 The base material for absorbent bodies of the present invention has an excellent adsorption effect against bad odor generated when using sanitary goods such as diapers.
以下、本発明をさらに詳しく説明する。
図1に示すように、本発明の吸収体用基材10は、液透過性表面シート11、液不透過性裏面シート12、及び吸収シート13の構成要素から構成される。吸収シート13は、液透過性表面シート11と液不透過性裏面シート12の中間に挟み込まれた構造を有する。
本発明では、液透過性表面シート11、液不透過性裏面シート12、及び吸収シート13のうちの少なくとも1つの構成要素が下記の物性を有する。
Hereinafter, the present invention will be described in more detail.
As shown in FIG. 1, the
In the present invention, at least one component of the liquid-
[比表面積]
前記吸収体用基材の構成要素の比表面積(窒素ガス吸着法で測定)は、10m2/g以上であり、30〜200m2/gであることが好ましく、50〜200m2/gであることがより好ましい。比表面積を前記範囲にすることにより、吸収体用基材の構成要素に無機化合物粒子を添加する場合、添加した無機化合物粒子がセルロース繊維に吸着する面積が大きくなるため、少量の無機化合物粒子の添加でも悪臭物質に対する効果が発揮される。
[Specific surface area]
The specific surface area of the components of the absorber substrate (measured in a nitrogen gas adsorption method) is a 10 m 2 / g or more, preferably 30 to 200 m 2 / g, is 50 to 200 m 2 / g It is more preferable. By making the specific surface area within the above range, when adding inorganic compound particles to the constituent elements of the substrate for absorber, the area where the added inorganic compound particles are adsorbed on the cellulose fiber is increased, so a small amount of inorganic compound particles Even when added, the effect on malodorous substances is exhibited.
[密度]
前記吸収体用基材の構成要素の密度は、0.3〜1.0g/cm3が好ましく、0.3〜0.9g/cm3がさらに好ましい。前記構成要素の密度を調節する方法は特に限定されるものではないが、各構成要素(シート)を抄紙する際に、有機溶剤の添加量を調節することにより密度を制御することができる。本発明の密度はJIS P8118:1998に準じて測定する。
[density]
The density of the components of the absorber substrate is preferably from 0.3 to 1.0 g / cm 3, more preferably 0.3-0.9 g / cm 3. The method for adjusting the density of the constituent elements is not particularly limited, but when making each constituent element (sheet), the density can be controlled by adjusting the addition amount of the organic solvent. The density of the present invention is measured according to JIS P8118: 1998.
用いる有機溶媒としては、例えば、メタノール、エタノール、2−プロパノール、エチレングリコール系化合物、ジプロピレングリコールメチルエーテル、エチレングリコールモノブチルエーテル、エチレングリコールモノ−t−ブチルエーテル、ジエチレングリコールモノエチルエーテルなどのグリコールエーテル類;ジエチレングリコールジメチルエーテル、ジエチレングリコールジブチルエーテル、テトラエチレングリコールジメチルエーテル、トリエチレングリコールジメチルエーテル、ジエチレングリコールジエチルエーテル、エチレングリコールジエチルエーテル、エチレングリコールジメチルエーテル、ジエチレングリコールイソプロピルメチルエーテルなどのグライム類;1,2−ブタンジオール、1,6−ヘキサンジオールなどの2価アルコール類;ジエチレングリコールモノエチルエーテルアセテート、エチレングリコールモノメチルエーテルアセテートなどが挙げられる。水への溶解性に優れ、沸点と表面張力と分子量のバランスが良いエチレングリコール系化合物、ジエチレングリコールジメチルエーテルやジエチレングリコールイソプロピルメチルエーテルが、多孔性が得られやすいため特に好ましい。これらの有機溶媒は2種以上併用することもできる。 Examples of the organic solvent to be used include glycol ethers such as methanol, ethanol, 2-propanol, ethylene glycol compounds, dipropylene glycol methyl ether, ethylene glycol monobutyl ether, ethylene glycol mono-t-butyl ether, and diethylene glycol monoethyl ether; Glymes such as diethylene glycol dimethyl ether, diethylene glycol dibutyl ether, tetraethylene glycol dimethyl ether, triethylene glycol dimethyl ether, diethylene glycol diethyl ether, ethylene glycol diethyl ether, ethylene glycol dimethyl ether, diethylene glycol isopropyl methyl ether; 1,2-butanediol, 1,6- Hexanedio Dihydric alcohols such as diethylene glycol monoethyl ether acetate, ethylene glycol monomethyl ether acetate. An ethylene glycol compound, diethylene glycol dimethyl ether and diethylene glycol isopropyl methyl ether, which are excellent in solubility in water and have a good balance of boiling point, surface tension, and molecular weight, are particularly preferred because they are easy to obtain porosity. Two or more of these organic solvents can be used in combination.
[平均孔径、空孔率]
前記吸収性素材の構成要素の平均孔径は、1〜1000nmであることが好ましい。平均孔径が前記下限値以上であれば、吸着効果をより高くできる。
前記吸収体用基材の構成要素の空孔率は、30〜80%が好ましく、40〜80%がさらに好ましい。本発明の空孔率は、JIS P8118に準じてシートの密度を測定し、その値から計算によって求める。
[Average pore diameter, porosity]
The average pore diameter of the constituent elements of the absorbent material is preferably 1 to 1000 nm. If the average pore diameter is not less than the lower limit, the adsorption effect can be further increased.
30-80% is preferable and, as for the porosity of the component of the said base material for absorbers, 40-80% is further more preferable. The porosity of the present invention is obtained by measuring the density of the sheet according to JIS P8118 and calculating from the value.
[坪量]
本発明の吸収体用基材を構成する構成要素の坪量は、5〜100g/m2が好ましく、10〜80g/m2がさらに好ましい。坪量が5g/m2未満ではシート剛度が小さいためハンドリング性が悪く、また厚さが薄いためシートとしての引張破断強度が小さく、加工の際に紙切れを起こしやすい。一方、100g/m2を超えると抄紙の際に濾水時間がかかるため、生産性の面で不適切である。本発明の坪量はJIS P8124:1998に準じて測定する。
[Basis weight]
5-100 g / m < 2 > is preferable and, as for the basic weight of the component which comprises the base material for absorbers of this invention, 10-80 g / m < 2 > is more preferable. If the basis weight is less than 5 g / m 2 , the sheet rigidity is small and the handling property is poor, and the thickness is small, so the tensile strength at break as a sheet is small, and paper breakage tends to occur during processing. On the other hand, if it exceeds 100 g / m 2 , drainage takes time during paper making, which is inappropriate in terms of productivity. The basis weight of the present invention is measured according to JIS P8124: 1998.
本発明の吸収体用基材は、リグノセルロースを含有する。リグノセルロース原料としては、特に限定するものではないが、例えば、木本性植物(針葉樹、広葉樹)、草本性植物を用いるのが好ましい。木本性植物をクラフト法、サルファイト法、ソーダ法、ポリサルファイド法などで蒸解した化学パルプ、レファイナー、グラインダーなどの機械処理によってパルプ化した機械パルプ、薬品による前処理の後、機械処理でパルプ化したセミケミカルパルプ、或いは古紙パルプなどを例示でき、それぞれ未晒(漂白前)もしくは晒(漂白後)の状態で使用することができる。また、非木材パルプとしては、例えば綿、マニラ麻、亜麻、藁、竹、バガス、ケナフなどを木材パルプと同様の方法でパルプ化した繊維が挙げられる。 The base material for absorbent bodies of the present invention contains lignocellulose. Although it does not specifically limit as a lignocellulose raw material, For example, it is preferable to use a woody plant (a conifer, a hardwood), and a herbaceous plant. Woody plants digested by kraft method, sulfite method, soda method, polysulfide method, etc. Semi-chemical pulp, waste paper pulp, etc. can be illustrated, and can be used in an unbleached (before bleaching) or bleached (after bleaching) state, respectively. Examples of non-wood pulp include fibers obtained by pulping cotton, manila hemp, flax, straw, bamboo, bagasse, kenaf, and the like in the same manner as wood pulp.
(セルロース繊維)
セルロース繊維は上記リグノセルロースを含有する原料を公知公用の方法で微細化して得ることが可能である。例えば、植物繊維含有原料をグラインダー(石臼型粉砕機)、高圧ホモジナイザーや超高圧ホモジナイザー、高圧衝突型粉砕機、ディスク型リファイナー、コニカルリファイナーなどの機械的作用を利用する湿式粉砕でセルロース系繊維を細くする方法などが挙げられる。また、TEMPO(2,2,6,6−テトラメチルピペリジン−1−オキシラジカル)触媒酸化、オゾン処理、酵素処理などの化学処理を施してから微細化する方法もある。勿論、木材を微粉砕後、脱リグニンなどの処理を行って得ることも可能である。一般的に、上記の方法で0.01〜20質量%程度のセルロース繊維懸濁液が得られる。
(Cellulose fiber)
Cellulose fibers can be obtained by refining a raw material containing the above lignocellulose by a publicly known method. For example, plant fiber-containing raw materials are thinned by wet grinding using mechanical action such as grinders (stone mill type grinders), high-pressure homogenizers, ultra-high pressure homogenizers, high-pressure collision type grinders, disk type refiners, conical refiners, etc. The method of doing is mentioned. In addition, there is a method in which TEMPO (2,2,6,6-tetramethylpiperidine-1-oxy radical) catalytic oxidation, chemical treatment such as ozone treatment, enzyme treatment, and the like are performed and then refined. Of course, after pulverizing wood, it is also possible to obtain it by performing a treatment such as delignification. Generally, a cellulose fiber suspension of about 0.01 to 20% by mass is obtained by the above method.
本発明の吸収体用基材には、セルロース繊維を含有させることもでき、微細セルロース繊維を含有させることもできる。微細セルロース繊維を含有させる場合は、平均繊維径が1000nm以下のセルロース微細繊維を含有させる。吸収体用基材に含有させるセルロース微細繊維の繊維径は、1〜1000nmが好ましく、20〜500nmがさらに好ましい。吸収体用基材を構成要素(シート)の全質量に対して、1〜1000nmのセルロース微細繊維を1〜50質量%含有させることが好ましく、20〜500nmのセルロース微細繊維を構成要素の全質量に対して1〜50質量%含有させることがさらに好ましい。繊維径が1000nmを超えると繊維間の空隙を埋めることが困難になり、繊維間の水素結合を補強する効果が小さくなるため好ましくない。
本発明のセルロース微細繊維の繊維径は走査型または透過型電子顕微鏡で観察した際に測定したものである。セルロース微細繊維は幅に分布があるため、2000〜100000倍の間に、顕微鏡の倍率を変え、測定回数を増やして測定し、繊維径を特定する。
Cellulose fibers can also be contained in the base material for absorbent bodies of the present invention, and fine cellulose fibers can also be contained. When fine cellulose fibers are contained, cellulose fine fibers having an average fiber diameter of 1000 nm or less are contained. The fiber diameter of the fine cellulose fibers contained in the absorbent base material is preferably 1 to 1000 nm, and more preferably 20 to 500 nm. It is preferable to contain 1 to 50% by mass of cellulose fine fibers of 1 to 1000 nm with respect to the total mass of the component (sheet) in the absorbent substrate, and the total mass of components of 20 to 500 nm of cellulose fine fibers. More preferably, the content is 1 to 50% by mass. When the fiber diameter exceeds 1000 nm, it is difficult to fill the gaps between the fibers, and the effect of reinforcing the hydrogen bonds between the fibers becomes small, which is not preferable.
The fiber diameter of the cellulose fine fiber of the present invention is measured when observed with a scanning or transmission electron microscope. Since the fine cellulose fiber has a distribution in width, it is measured by changing the magnification of the microscope between 2000 to 100000 times, increasing the number of measurements, and specifying the fiber diameter.
セルロース繊維の長さは特に限定するものではないが、叩解時のフィブリル化と同時に生じる他の現象として、パルプ繊維の切断という短繊維化現象が発生し、紙力強度の低下を引き起こすことも考えられるため、長さは幅の10倍以上が好ましく、50倍以上がさらに好ましく、100倍以上が最も好ましい。そのようにするためには、例えば、繊維長の長い針葉樹パルプを選ぶことが有効である。
繊維の長さも繊維径と同様に走査または透過型電子顕微鏡で、視野に入るように倍率を変えて観察し、測定する。
The length of the cellulose fiber is not particularly limited, but as another phenomenon that occurs simultaneously with fibrillation at the time of beating, a shortening phenomenon called pulp fiber cutting occurs, which may cause a decrease in paper strength. Therefore, the length is preferably 10 times or more of the width, more preferably 50 times or more, and most preferably 100 times or more. In order to do so, for example, it is effective to select softwood pulp having a long fiber length.
Similarly to the fiber diameter, the length of the fiber is observed and measured with a scanning or transmission electron microscope while changing the magnification so as to enter the field of view.
セルロース繊維を配合したパルプスラリーは、通常の抄紙で用いられる長網式、円網式、傾斜式等の連続抄紙機のほか、これらを組み合わせた多層抄き合わせ抄紙機、さらに手抄き等公知の抄紙方法で抄紙されシート化が可能である。 Pulp slurries containing cellulose fibers are not only continuous paper machines such as long-mesh type, circular net type, and inclined type used in normal paper making, but also known as multi-layered paper making machines combining these, and hand-making It can be made into a sheet by the paper making method.
上記一般紙用パルプとセルロース繊維以外に、本発明の吸収体用基材は他の紙と同様に填料、サイズ剤、紙力増強剤、歩留まり向上剤などの化学添加剤をセルロース繊維含有パルプスラリーに適宜添加する。 In addition to the above general paper pulp and cellulose fibers, the absorbent substrate of the present invention contains cellulose additives containing chemical additives such as fillers, sizing agents, paper strength enhancers, and yield improvers, as with other papers. As appropriate.
本発明の吸収体用基材を構成する構成要素には、無機化合物粒子を添加することができる。前記無機化合物粒子はナノ粒子(粒子径1〜2000nm)であることが、無機化合物粒子が有する効果が高まるため好ましい。無機化合物粒子のナノ粒子としては、粒子径が2nm〜300nmであることが好ましく、4nm〜200nmがさらに好ましく、6nm〜100nmが特に好ましい。ここで、上記ナノ粒子の粒子径は動的光散乱法による一次粒子の平均粒子径あるいは透過型電子顕微鏡観察による一次粒子の平均粒子径である。無機化合物粒子の添加方法は特に限定されない。 Inorganic compound particles can be added to the constituent elements constituting the absorbent substrate of the present invention. The inorganic compound particles are preferably nanoparticles (particle diameter: 1 to 2000 nm) because the effect of the inorganic compound particles is enhanced. The nanoparticles of inorganic compound particles preferably have a particle size of 2 nm to 300 nm, more preferably 4 nm to 200 nm, and particularly preferably 6 nm to 100 nm. Here, the particle diameter of the nanoparticles is the average particle diameter of primary particles by a dynamic light scattering method or the average particle diameter of primary particles by observation with a transmission electron microscope. The method for adding the inorganic compound particles is not particularly limited.
本発明において用いられる無機化合物粒子としては、抗菌、消臭等の機能性を有する無機化合物粒子が挙げられる。具体的には、二酸化珪素(SiO2)、酸化アルミニウム(Al2O3)、酸化鉄(Fe2O3)、酸化イットリウム(Y2O3)、酸化インジウム(InO)、酸化亜鉛(ZnO)、酸化マグネシウム(MgO)、二酸化チタン(TiO2)、二酸化セリウム(CeO2)、四酸化三マンガン(Mn3O4)、五酸化ニオブ(Nb2O5)、炭化珪素(SiC)、炭化ホウ素(B4C)、窒化アルミニウム(AlN)、ホウ化チタン(TiB2)等が挙げられる。
また、金属のナノ粒子も本発明の無機化合物のナノ粒子として使用可能である。具体例としては、金、銀、銅、アルミニウム、ニッケル、コバルト、鉄、白金、ルテニウム、亜鉛、パナジウム、ロジウム、パラジウム、オスミウム、イリジウムなどが挙げられる。
また、ゼオライト、ハイドロキシアパタイト、シリカに前記無機化合物粒子が結合したナノプラチナーシリカ粒子等や、前記無機化合物粒子を含有する市販の抗菌剤や消臭剤等も特に制限なく用いることができる。
Examples of the inorganic compound particles used in the present invention include inorganic compound particles having functions such as antibacterial properties and deodorization. Specifically, silicon dioxide (SiO 2 ), aluminum oxide (Al 2 O 3 ), iron oxide (Fe 2 O 3 ), yttrium oxide (Y 2 O 3 ), indium oxide (InO), zinc oxide (ZnO) , Magnesium oxide (MgO), titanium dioxide (TiO 2 ), cerium dioxide (CeO 2 ), trimanganese tetroxide (Mn 3 O 4 ), niobium pentoxide (Nb 2 O 5 ), silicon carbide (SiC), boron carbide (B 4 C), aluminum nitride (AlN), titanium boride (TiB 2 ), and the like.
Metal nanoparticles can also be used as the inorganic compound nanoparticles of the present invention. Specific examples include gold, silver, copper, aluminum, nickel, cobalt, iron, platinum, ruthenium, zinc, panadium, rhodium, palladium, osmium, iridium and the like.
In addition, zeolite, hydroxyapatite, nanoplatinum-silica particles in which the inorganic compound particles are bonded to silica, commercially available antibacterial agents and deodorants containing the inorganic compound particles can be used without particular limitation.
セルロース繊維と無機化合物粒子の混合比率は10000:1〜1:1が好ましく、10000:1〜5:1がさらに好ましく、10000:1〜10:1が特に好ましい。 The mixing ratio of cellulose fibers and inorganic compound particles is preferably 10,000: 1 to 1: 1, more preferably 10,000: 1 to 5: 1, and particularly preferably 10,000: 1 to 10: 1.
前記吸収体用基材を構成する液透過性表面シート、液不透過性裏面シート、及び吸収シートから構成される構成要素のうちの少なくとも1つの構成要素の物性を前記範囲にすることにより、吸収体用基材が、悪臭に対して優れた吸着効果を有する。悪臭物質としては、アンモニア、硫化水素、メチルメルカプタン、トリメチルアミン、ノネナール等が挙げられるが、これらに限定されない。 Absorbing by setting the physical property of at least one of the components composed of the liquid-permeable top sheet, the liquid-impermeable back sheet, and the absorbent sheet constituting the absorber base material in the above range. The body base material has an excellent adsorption effect against bad odor. Malodorous substances include, but are not limited to, ammonia, hydrogen sulfide, methyl mercaptan, trimethylamine, nonenal and the like.
本発明の吸収体用基材を衛生用品(おむつ、失禁パッド、生理用ナプキン等)に用いられる吸収体の基材として用いることにより、尿、便中に含まれる悪臭物質の低減が可能となる。 By using the absorbent substrate of the present invention as an absorbent substrate used in sanitary goods (diapers, incontinence pads, sanitary napkins, etc.), it is possible to reduce malodorous substances contained in urine and feces. .
以下に実施例及び比較例を挙げて本発明をより具体的に説明するが、勿論、本発明はこれらの実施例に限定されるものではない。また、例中の部、及び%は特に断らない限り、それぞれ質量部及び質量%を示す。 Hereinafter, the present invention will be described more specifically with reference to examples and comparative examples. However, the present invention is not limited to these examples. Moreover, unless otherwise indicated, the part and% in an example show a mass part and mass%, respectively.
<実施例1>
針葉樹晒クラフトパルプ(王子ホールディングス社製、水分50%、JIS P8121に準じて測定されるカナダ標準濾水度(CSF)は550ml)を濃度4.0%になるように水を加え、ディスインテグレーターで離解して、パルプ分散液を得た。このパルプ分散液を長径250mmのグラインダー部を有する増幸産業社製のマスコロイダーを用いて、処理回数3回で解繊処理を行って微細化した。得られた解繊液の上澄み濃度は3.25%であった。また、上澄み中の微細繊維の幅は60〜700nmの範囲にあり、平均繊維幅は140nmであった。
上記解繊液の上澄みの濃度が約3%になるように水を加えて希釈し、ホモミキサーで攪拌してセルロース微細繊維分散液を得た。このセルロース微細繊維分散液の固形分濃度を測定したところ、3.0%であった。
ナノプラチナ−シリカ粒子((株)エブリウェアー製、PN−100SP)をセルロース微細繊維分散液の固形分100重部に対し1部となるように添加した。
以上の操作で調製したセルロース微細繊維とナノプラチナ−シリカ粒子を含有する分散液を508ナイロンメッシュシート上で厚さが均一になるようにアプリケータ(クリアランス1mm)で表面を均し、さらに下部より吸引脱水した後に、ジエチレングリコールジメチルエーテル(DEGDME、東邦化学社製、商品名:「ハイソルブMDM」、分子量134、沸点162℃、表面張力28N/m)を湿紙状態のシートの固形分100部に対して1200部を添加した。下部より吸引後、105℃に加熱したシリンダドライヤで0.2MPaに加圧しながら乾燥させた。以上の操作で無機化合物粒子を含むセルロース微細繊維シートを得た。
下記の液透過性表面シート、吸収シート、液不透過性裏面シートを用いて、吸収シートを液透過性表面シートと液不透過性裏面シートの中間に挿入した。次に、液透過性表面シートと液不透過性裏面シートを貼り付け、吸収シートが液透過性表面シートと液不透過性裏面シートとの間に包み込み、吸収体用基材を作製した。
<Example 1>
Add water to a conifer bleached kraft pulp (manufactured by Oji Holdings Co., Ltd., moisture 50%, Canadian standard freeness (CSF) 550 ml measured according to JIS P8121) to a concentration of 4.0%, and use a disintegrator. After disaggregation, a pulp dispersion was obtained. This pulp dispersion liquid was refined by performing a defibrating process three times using a mass colander manufactured by Masuko Sangyo Co., Ltd. having a grinder portion having a major axis of 250 mm. The supernatant concentration of the obtained defibrating solution was 3.25%. Moreover, the width | variety of the fine fiber in a supernatant was in the range of 60-700 nm, and the average fiber width was 140 nm.
Water was added and diluted so that the concentration of the supernatant of the defibrated solution was about 3%, and stirred with a homomixer to obtain a cellulose fine fiber dispersion. The solid content concentration of the fine cellulose fiber dispersion was measured and found to be 3.0%.
Nano platinum-silica particles (manufactured by Everyware, PN-100SP) were added so as to be 1 part with respect to 100 parts by weight of the solid content of the cellulose fine fiber dispersion.
The dispersion containing cellulose fine fibers and nanoplatinum-silica particles prepared by the above operation is leveled with an applicator (clearance 1 mm) so that the thickness is uniform on a 508 nylon mesh sheet. After suction dehydration, diethylene glycol dimethyl ether (DEGDME, manufactured by Toho Chemical Co., Ltd., trade name: “Hisolv MDM”, molecular weight 134, boiling point 162 ° C., surface tension 28 N / m) is applied to 100 parts of the solid content of the wet paper sheet. 1200 parts were added. After suction from the lower part, it was dried while being pressurized to 0.2 MPa with a cylinder dryer heated to 105 ° C. By the above operation, a cellulose fine fiber sheet containing inorganic compound particles was obtained.
Using the following liquid-permeable top sheet, absorbent sheet, and liquid-impermeable back sheet, the absorbent sheet was inserted between the liquid-permeable top sheet and the liquid-impermeable back sheet. Next, a liquid-permeable surface sheet and a liquid-impermeable back sheet were affixed, and the absorbent sheet was wrapped between the liquid-permeable surface sheet and the liquid-impermeable back sheet to prepare an absorbent base material.
(液透過性表面シート)
液透過性表面シートとしては、無機化合物粒子を含むセルロース微細繊維シートを用いた。
(吸収シート)
綿状パルプ150g/m2、ポリアクリル酸ナトリウム(高吸収性ポリマー)135g/m2、熱融着性繊維(ポリエステル/ポリエチレン)15g/m2、を均一に分布させたものを不織布で包み込み、表面温度150℃の熱プレスロールにて吸収体全体の緊度が0.10g/cm3となるように調製し、吸収シートを得た。
(液不透過性裏面シート)
液不透過性裏面シートとしては、不織布を用いた。
(Liquid permeable surface sheet)
As the liquid-permeable surface sheet, a cellulose fine fiber sheet containing inorganic compound particles was used.
(Absorption sheet)
Wrapped in a nonwoven fabric is a cotton pulp of 150 g / m 2 , sodium polyacrylate (superabsorbent polymer) 135 g / m 2 , and heat-fusible fiber (polyester / polyethylene) 15 g / m 2 . It prepared so that the tension | tensile_strength of the whole absorber might be set to 0.10 g / cm < 3 > with the hot press roll with a surface temperature of 150 degreeC, and the absorption sheet was obtained.
(Liquid impervious back sheet)
A nonwoven fabric was used as the liquid-impermeable back sheet.
<臭い評価試験>
前記で作製した吸水性物品をポリフッ化ビニル製バッグ)3Lに入れ、密封後、ポリフッ化ビニル製バッグ内に1mlのアンモニアガスを注入し、ポリフッ化ビニル製バッグを密閉し60分間静置した。10人の被験者が各々ポリフッ化ビニル製バッグ内の臭い下記の5段階評価で判定した。10名の評価結果の平均値を表1に示す。
[臭い評価法]
1:無臭である。
2:何の臭いかわからないが、ややかすかに何かを感じる強さである。
3:何の臭いであるかわかる弱い臭いである。
4:明らかに感じる臭いである。
5:強い臭いである。
<Odor evaluation test>
The water-absorbing article prepared above was put in 3 L of a polyvinyl fluoride bag), sealed, and then injected with 1 ml of ammonia gas into the polyvinyl fluoride bag, and the polyvinyl fluoride bag was sealed and allowed to stand for 60 minutes. Ten test subjects each judged the odor in the polyvinyl fluoride bag by the following five-step evaluation. Table 1 shows the average value of the evaluation results of 10 people.
[Odor evaluation method]
1: Odorless.
2: I don't know what the odor is, but it is the strength to feel something gently.
3: It is a weak smell which understands what kind of smell it is.
4: The smell is clearly felt.
5: Strong odor.
<実施例2>
実施例1において、ジエチレングリコールジメチルエーテルを湿紙状態のシートの固形分100部に対して600部を添加した以外は全て実施例1と同様の方法で試験した。結果を表1に示す。
<Example 2>
In Example 1, all tests were performed in the same manner as in Example 1 except that 600 parts of diethylene glycol dimethyl ether was added to 100 parts of the solid content of the wet paper sheet. The results are shown in Table 1.
<実施例3>
実施例1において、ジエチレングリコールジメチルエーテルを湿紙状態のシートの固形分100部に対して300部を添加した以外は全て実施例1と同様の方法で試験した。結果を表1に示す。
<Example 3>
In Example 1, all tests were performed in the same manner as in Example 1 except that 300 parts of diethylene glycol dimethyl ether was added to 100 parts of the solid content of the wet paper sheet. The results are shown in Table 1.
<実施例4>
実施例1において、マスコロイダーの処理回数を1回にした以外は全て実施例1と同様の方法で試験した。結果を表1に示す。
<Example 4>
In Example 1, all the tests were performed in the same manner as in Example 1 except that the number of mass collider treatments was set to one. The results are shown in Table 1.
<比較例1>
針葉樹晒クラフトパルプ(王子ホールディングス社製、水分50%、JIS P8121に準じて測定されるカナダ標準濾水度(CSF)は550ml)を濃度4.0%になるように水を加え、ディスインテグレーターで離解して、パルプ分散液を得た。この分散液の濃度が約0.2%になるように水を加えて希釈し、ホモミキサーで攪拌して微細繊維分散液を得た。この分散液の固形分濃度を測定したところ、0.2%であった。
ナノプラチナ−シリカ粒子((株)エブリウェアー製、PN−100SP)を分散液の固形分100部に対し1部となるように添加した。
このように調製した分散液を508ナイロンメッシュシート上に展開し、下部より吸引脱水した後に、ジエチレングリコールジメチルエーテル(DEGDME、東邦化学社製、商品名:「ハイソルブMDM」、分子量134、沸点162℃、表面張力28N/m)を湿紙状態のシートの固形分100部に対して1200部を添加した。下部より吸引後、105℃に加熱したシリンダドライヤで0.2MPaに加圧しながら乾燥させた。以上の操作で、無機化合物粒子を含むセルロース微細繊維シートを得た。得られたシートを用いて、実施例1と同様の方法で吸収体用基材を作製し、臭いの評価を行った。結果を表1に示す。
<Comparative Example 1>
Add water to a conifer bleached kraft pulp (manufactured by Oji Holdings Co., Ltd., moisture 50%, Canadian standard freeness (CSF) 550 ml measured according to JIS P8121) to a concentration of 4.0%, and use a disintegrator. After disaggregation, a pulp dispersion was obtained. Water was added to dilute the dispersion to a concentration of about 0.2%, and the mixture was stirred with a homomixer to obtain a fine fiber dispersion. The solid content concentration of this dispersion was measured and found to be 0.2%.
Nanoplatinum-silica particles (manufactured by Everyware, PN-100SP) were added so as to be 1 part with respect to 100 parts of the solid content of the dispersion.
The dispersion thus prepared was spread on a 508 nylon mesh sheet and sucked and dehydrated from below, and then diethylene glycol dimethyl ether (DEGDME, manufactured by Toho Chemical Co., Ltd., trade name: “Hisolv MDM”, molecular weight 134, boiling point 162 ° C., surface A tension of 28 N / m) was added in an amount of 1200 parts per 100 parts of the solid content of the wet paper sheet. After suction from the lower part, it was dried while being pressurized to 0.2 MPa with a cylinder dryer heated to 105 ° C. By the above operation, a cellulose fine fiber sheet containing inorganic compound particles was obtained. Using the obtained sheet, an absorbent substrate was prepared in the same manner as in Example 1, and the odor was evaluated. The results are shown in Table 1.
表1に示すように、吸収体用基材の液透過性表面シートとして、ナノプラチナ−シリカ粒子を含有するセルロース微細繊維シートを用いた試験において、セルロースシートに含まれるセルロース微細繊維の比表面積が大きい程、アンモニア吸着効果が高かった。 As shown in Table 1, in the test using the cellulose fine fiber sheet containing nanoplatinum-silica particles as the liquid-permeable surface sheet of the base material for absorber, the specific surface area of the cellulose fine fiber contained in the cellulose sheet is The larger the value, the higher the ammonia adsorption effect.
<実施例5>
実施例1の<吸収シート>において、「綿状パルプ」の代わりに「無機化合物粒子を含むセルロース微細繊維シート」を用いた。また、実施例1の<液透過性表面シート>において、「無機化合物粒子を含むセルロース微細繊維シート」の代わりに「不織布」を用いた。それ以外の操作は全て実施例1と同様の方法で試験した。結果を表2に示す。
<Example 5>
In the <absorbing sheet> of Example 1, “cellulose fine fiber sheet containing inorganic compound particles” was used instead of “cotton pulp”. Moreover, in the <liquid-permeable surface sheet> of Example 1, “nonwoven fabric” was used instead of “cellulose fine fiber sheet containing inorganic compound particles”. All other operations were tested in the same manner as in Example 1. The results are shown in Table 2.
<実施例6>
実施例2の<吸収シート>において、「綿状パルプ」の代わりに「無機化合物粒子を含むセルロース微細繊維シート」を用いた。また、実施例2の<液透過性表面シート>において、「無機化合物粒子を含むセルロース微細繊維シート」の代わりに「不織布」を用いた。それ以外の操作は全て実施例2と同様の方法で試験した。結果を表2に示す。
<Example 6>
In <absorbent sheet> of Example 2, “cellulose fine fiber sheet containing inorganic compound particles” was used instead of “cotton pulp”. Further, in the <Liquid permeable surface sheet> of Example 2, “nonwoven fabric” was used instead of “cellulose fine fiber sheet containing inorganic compound particles”. All other operations were tested in the same manner as in Example 2. The results are shown in Table 2.
<実施例7>
実施例3の<吸収シート>において、「綿状パルプ」の代わりに「無機化合物粒子を含むセルロース微細繊維シート」を用いた。また、実施例3の<液透過性表面シート>において、「無機化合物粒子を含むセルロース微細繊維シート」の代わりに「不織布」を用いた。それ以外の操作は全て実施例3と同様の方法で試験した。結果を表2に示す。
<Example 7>
In <absorbent sheet> of Example 3, “cellulose fine fiber sheet containing inorganic compound particles” was used instead of “cotton pulp”. In the <Liquid-permeable surface sheet> of Example 3, “nonwoven fabric” was used instead of “cellulose fine fiber sheet containing inorganic compound particles”. All other operations were tested in the same manner as in Example 3. The results are shown in Table 2.
<実施例8>
実施例4の<吸収シート>において、「綿状パルプ」の代わりに「無機化合物粒子を含むセルロース微細繊維シート」を用いた。また、実施例4の<液透過性表面シート>において、「無機化合物粒子を含むセルロース微細繊維シート」の代わりに「不織布」を用いた。それ以外の操作は全て実施例4と同様の方法で試験した。結果を表2に示す。
<Example 8>
In <absorbing sheet> of Example 4, “cellulose fine fiber sheet containing inorganic compound particles” was used instead of “cotton pulp”. Moreover, in the <liquid-permeable surface sheet> of Example 4, “nonwoven fabric” was used instead of “cellulose fine fiber sheet containing inorganic compound particles”. All other operations were tested in the same manner as in Example 4. The results are shown in Table 2.
<比較例2>
比較例1の<吸収シート>において、「綿状パルプ」の代わりに「無機化合物粒子を含むセルロース微細繊維シート」を用いた。また、比較例1の<液透過性表面シート>において、「無機化合物粒子を含むセルロース微細繊維シート」の代わりに「不織布」を用いた。それ以外の操作は全て比較例1と同様の方法で試験した。結果を表2に示す。
<Comparative example 2>
In <absorbent sheet> of Comparative Example 1, a “cellulose fine fiber sheet containing inorganic compound particles” was used instead of “cotton pulp”. Moreover, in the <liquid-permeable surface sheet> of Comparative Example 1, “nonwoven fabric” was used instead of “cellulose fine fiber sheet containing inorganic compound particles”. All other operations were tested in the same manner as in Comparative Example 1. The results are shown in Table 2.
表2に示すように、吸収体用基材の吸収シートとして、ナノプラチナ−シリカ粒子を含有する。セルロース微細繊維シートを用いた試験において、セルロースシートに含まれるセルロース微細繊維の比表面積が大きい程、アンモニア吸着効果が高かった。 As shown in Table 2, nanoplatinum-silica particles are contained as the absorbent sheet of the absorber base material. In the test using the cellulose fine fiber sheet, the ammonia adsorption effect was higher as the specific surface area of the cellulose fine fiber contained in the cellulose sheet was larger.
<実施例9>
実施例1の<液不透過性裏面シート>において、「不織布」の代わりに「無機化合物粒子を含むセルロース微細繊維シート」を用いた。また、実施例1の<液透過性表面シート>において、「無機化合物粒子を含むセルロース微細繊維シート」の代わりに「不織布」を用いた。それ以外の操作は全て実施例1と同様の方法で試験した。結果を表3に示す。
<Example 9>
In <Liquid-impermeable back sheet> of Example 1, “cellulose fine fiber sheet containing inorganic compound particles” was used instead of “nonwoven fabric”. Moreover, in the <liquid-permeable surface sheet> of Example 1, “nonwoven fabric” was used instead of “cellulose fine fiber sheet containing inorganic compound particles”. All other operations were tested in the same manner as in Example 1. The results are shown in Table 3.
<実施例10>
実施例2の<液不透過性裏面シート>において、「不織布」の代わりに「無機化合物粒子を含むセルロース微細繊維シート」を用いた。また、実施例2の<液透過性表面シート>において、「無機化合物粒子を含むセルロース微細繊維シート」の代わりに「不織布」を用いた。それ以外の操作は全て実施例2と同様の方法で試験した。結果を表3に示す。
<Example 10>
In <Liquid-impermeable back sheet> of Example 2, “cellulose fine fiber sheet containing inorganic compound particles” was used instead of “nonwoven fabric”. Further, in the <Liquid permeable surface sheet> of Example 2, “nonwoven fabric” was used instead of “cellulose fine fiber sheet containing inorganic compound particles”. All other operations were tested in the same manner as in Example 2. The results are shown in Table 3.
<実施例11>
実施例3の<液不透過性裏面シート>において、「不織布」の代わりに「無機化合物粒子を含むセルロース微細繊維シート」を用いた。また、実施例3の<液透過性表面シート>において、「無機化合物粒子を含むセルロース微細繊維シート」の代わりに「不織布」を用いた。それ以外の操作は全て実施例3と同様の方法で試験した。結果を表3に示す。
<Example 11>
In “Liquid-impermeable back sheet” of Example 3, “cellulose fine fiber sheet containing inorganic compound particles” was used instead of “nonwoven fabric”. In the <Liquid-permeable surface sheet> of Example 3, “nonwoven fabric” was used instead of “cellulose fine fiber sheet containing inorganic compound particles”. All other operations were tested in the same manner as in Example 3. The results are shown in Table 3.
<実施例12>
実施例4の<液不透過性裏面シート>において、「不織布」の代わりに「無機化合物粒子を含むセルロース微細繊維シート」を用いた。また、実施例4の<液透過性表面シート>において、「無機化合物粒子を含むセルロース微細繊維シート」の代わりに「不織布」を用いた。それ以外の操作は全て実施例4と同様の方法で試験した。結果を表3に示す。
<Example 12>
In <Liquid Impervious Back Sheet> of Example 4, “cellulose fine fiber sheet containing inorganic compound particles” was used instead of “nonwoven fabric”. Moreover, in the <liquid-permeable surface sheet> of Example 4, “nonwoven fabric” was used instead of “cellulose fine fiber sheet containing inorganic compound particles”. All other operations were tested in the same manner as in Example 4. The results are shown in Table 3.
<比較例3>
比較例1の<液不透過性裏面シート>において、「不織布」の代わりに「無機化合物粒子を含むセルロース微細繊維シート」を用いた。また、比較例1の<液透過性表面シート>において、「無機化合物粒子を含むセルロース微細繊維シート」の代わりに「不織布」を用いた。それ以外の操作は全て比較例1と同様の方法で試験した。結果を表3に示す。
<Comparative Example 3>
In “Liquid-impermeable back sheet” of Comparative Example 1, “cellulose fine fiber sheet containing inorganic compound particles” was used instead of “nonwoven fabric”. Moreover, in the <liquid-permeable surface sheet> of Comparative Example 1, “nonwoven fabric” was used instead of “cellulose fine fiber sheet containing inorganic compound particles”. All other operations were tested in the same manner as in Comparative Example 1. The results are shown in Table 3.
表3に示すように、吸収体用基材の液不透過性裏面シートとして、ナノプラチナ−シリカ粒子を含有するセルロース微細繊維シートを用いた試験において、セルロースシートに含まれるセルロース微細繊維の比表面積が大きい程、アンモニア吸着効果が高かった。 As shown in Table 3, the specific surface area of the cellulose fine fiber contained in the cellulose sheet in the test using the cellulose fine fiber sheet containing nanoplatinum-silica particles as the liquid-impermeable back sheet of the absorbent base material The larger the value, the higher the ammonia adsorption effect.
<実施例13>
実施例1において、ナノプラチナ−シリカ粒子の代わりに銀粒子を用いた以外は全て実施例1と同様の方法で試験した。結果を表4に示す。
<Example 13>
In Example 1, it tested by the method similar to Example 1 except having used the silver particle instead of the nano platinum- silica particle. The results are shown in Table 4.
<実施例14>
実施例2において、ナノプラチナ−シリカ粒子の代わりに銀粒子を用いた以外は全て実施例2と同様の方法で試験した。結果を表4に示す。
<Example 14>
In Example 2, all tests were performed in the same manner as in Example 2 except that silver particles were used instead of nanoplatinum-silica particles. The results are shown in Table 4.
<実施例15>
実施例3において、ナノプラチナ−シリカ粒子の代わりに銀粒子を用いた以外は全て実施例3と同様の方法で試験した。結果を表4に示す。
<Example 15>
In Example 3, all tests were performed in the same manner as in Example 3 except that silver particles were used instead of the nanoplatinum-silica particles. The results are shown in Table 4.
<実施例16>
実施例4において、ナノプラチナ−シリカ粒子の代わりに銀粒子を用いた以外は全て実施例4と同様の方法で試験した。結果を表4に示す。
<Example 16>
In Example 4, all tests were performed in the same manner as in Example 4 except that silver particles were used instead of nanoplatinum-silica particles. The results are shown in Table 4.
<比較例4>
比較例1において、ナノプラチナ−シリカ粒子の代わりに銀粒子を用いた以外は全て比較例1と同様の方法で試験した。結果を表4に示す。
<Comparative example 4>
In Comparative Example 1, all tests were performed in the same manner as in Comparative Example 1 except that silver particles were used instead of the nanoplatinum-silica particles. The results are shown in Table 4.
表4に示すように、セルロース微細繊維を含有するシートに無機化合物粒子として銀を添加した試験において、セルロースシートに含まれるセルロース微細繊維の比表面積が大きい程、アンモニア吸着効果が高かった。 As shown in Table 4, in a test in which silver was added as inorganic compound particles to a sheet containing cellulose fine fibers, the ammonia adsorption effect was higher as the specific surface area of the cellulose fine fibers contained in the cellulose sheet was larger.
本発明により、悪臭物質に対して吸着効果の高い吸収体用基材が得られる。 By this invention, the base material for absorbers with a high adsorption effect with respect to a malodorous substance is obtained.
10 吸収体用基材
11 液透過性表面シート
12 液不透過性裏面シート
13 吸収シート
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