CN117017626B - AB combined core for adult paper diaper and preparation method thereof - Google Patents
AB combined core for adult paper diaper and preparation method thereof Download PDFInfo
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- CN117017626B CN117017626B CN202311012723.9A CN202311012723A CN117017626B CN 117017626 B CN117017626 B CN 117017626B CN 202311012723 A CN202311012723 A CN 202311012723A CN 117017626 B CN117017626 B CN 117017626B
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- core
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- 238000002360 preparation method Methods 0.000 title abstract description 17
- 239000012792 core layer Substances 0.000 claims abstract description 154
- 239000011247 coating layer Substances 0.000 claims abstract description 88
- 239000002131 composite material Substances 0.000 claims abstract description 64
- 239000000178 monomer Substances 0.000 claims abstract description 57
- FTALTLPZDVFJSS-UHFFFAOYSA-N 2-(2-ethoxyethoxy)ethyl prop-2-enoate Chemical compound CCOCCOCCOC(=O)C=C FTALTLPZDVFJSS-UHFFFAOYSA-N 0.000 claims abstract description 41
- GTELLNMUWNJXMQ-UHFFFAOYSA-N 2-ethyl-2-(hydroxymethyl)propane-1,3-diol;prop-2-enoic acid Chemical class OC(=O)C=C.OC(=O)C=C.OC(=O)C=C.CCC(CO)(CO)CO GTELLNMUWNJXMQ-UHFFFAOYSA-N 0.000 claims abstract description 40
- 229920005989 resin Polymers 0.000 claims abstract description 39
- 239000011347 resin Substances 0.000 claims abstract description 39
- 239000004745 nonwoven fabric Substances 0.000 claims abstract description 38
- 229920001131 Pulp (paper) Polymers 0.000 claims abstract description 36
- 239000002250 absorbent Substances 0.000 claims abstract description 17
- 239000002994 raw material Substances 0.000 claims abstract description 16
- NIXOWILDQLNWCW-UHFFFAOYSA-M Acrylate Chemical compound [O-]C(=O)C=C NIXOWILDQLNWCW-UHFFFAOYSA-M 0.000 claims abstract description 15
- 239000003431 cross linking reagent Substances 0.000 claims abstract description 9
- -1 neutralizers Substances 0.000 claims abstract description 9
- 239000003999 initiator Substances 0.000 claims abstract description 7
- 239000002904 solvent Substances 0.000 claims abstract description 5
- 238000003825 pressing Methods 0.000 claims abstract description 4
- 239000010410 layer Substances 0.000 claims description 46
- VVQNEPGJFQJSBK-UHFFFAOYSA-N Methyl methacrylate Chemical compound COC(=O)C(C)=C VVQNEPGJFQJSBK-UHFFFAOYSA-N 0.000 claims description 33
- 229920001661 Chitosan Polymers 0.000 claims description 28
- 125000002057 carboxymethyl group Chemical group [H]OC(=O)C([H])([H])[*] 0.000 claims description 28
- 238000013329 compounding Methods 0.000 claims description 27
- FYRWKWGEFZTOQI-UHFFFAOYSA-N 3-prop-2-enoxy-2,2-bis(prop-2-enoxymethyl)propan-1-ol Chemical compound C=CCOCC(CO)(COCC=C)COCC=C FYRWKWGEFZTOQI-UHFFFAOYSA-N 0.000 claims description 20
- HRPVXLWXLXDGHG-UHFFFAOYSA-N Acrylamide Chemical compound NC(=O)C=C HRPVXLWXLXDGHG-UHFFFAOYSA-N 0.000 claims description 20
- 239000003607 modifier Substances 0.000 claims description 18
- 238000002156 mixing Methods 0.000 claims description 15
- 238000005253 cladding Methods 0.000 claims description 14
- 238000005507 spraying Methods 0.000 claims description 13
- 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 claims description 10
- OMIGHNLMNHATMP-UHFFFAOYSA-N 2-hydroxyethyl prop-2-enoate Chemical compound OCCOC(=O)C=C OMIGHNLMNHATMP-UHFFFAOYSA-N 0.000 claims description 9
- 239000000203 mixture Substances 0.000 claims description 8
- BAPJBEWLBFYGME-UHFFFAOYSA-N Methyl acrylate Chemical compound COC(=O)C=C BAPJBEWLBFYGME-UHFFFAOYSA-N 0.000 claims description 6
- JIGUQPWFLRLWPJ-UHFFFAOYSA-N Ethyl acrylate Chemical compound CCOC(=O)C=C JIGUQPWFLRLWPJ-UHFFFAOYSA-N 0.000 claims description 5
- 239000011248 coating agent Substances 0.000 claims description 5
- 238000000576 coating method Methods 0.000 claims description 5
- PNJWIWWMYCMZRO-UHFFFAOYSA-N pent‐4‐en‐2‐one Natural products CC(=O)CC=C PNJWIWWMYCMZRO-UHFFFAOYSA-N 0.000 claims description 5
- 229910052783 alkali metal Inorganic materials 0.000 claims description 3
- 229910000288 alkali metal carbonate Inorganic materials 0.000 claims description 3
- 150000008041 alkali metal carbonates Chemical class 0.000 claims description 3
- 150000008044 alkali metal hydroxides Chemical class 0.000 claims description 3
- 229910000272 alkali metal oxide Inorganic materials 0.000 claims description 3
- CQEYYJKEWSMYFG-UHFFFAOYSA-N butyl acrylate Chemical compound CCCCOC(=O)C=C CQEYYJKEWSMYFG-UHFFFAOYSA-N 0.000 claims description 3
- SUPCQIBBMFXVTL-UHFFFAOYSA-N ethyl 2-methylprop-2-enoate Chemical compound CCOC(=O)C(C)=C SUPCQIBBMFXVTL-UHFFFAOYSA-N 0.000 claims description 3
- 150000002978 peroxides Chemical class 0.000 claims description 3
- JRKICGRDRMAZLK-UHFFFAOYSA-L peroxydisulfate Chemical compound [O-]S(=O)(=O)OOS([O-])(=O)=O JRKICGRDRMAZLK-UHFFFAOYSA-L 0.000 claims description 3
- PNXMTCDJUBJHQJ-UHFFFAOYSA-N propyl prop-2-enoate Chemical compound CCCOC(=O)C=C PNXMTCDJUBJHQJ-UHFFFAOYSA-N 0.000 claims description 3
- 238000000034 method Methods 0.000 claims 2
- 238000010521 absorption reaction Methods 0.000 abstract description 33
- 229920006395 saturated elastomer Polymers 0.000 abstract description 6
- 230000000694 effects Effects 0.000 abstract description 3
- 229920002125 Sokalan® Polymers 0.000 description 33
- 239000004584 polyacrylic acid Substances 0.000 description 33
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical group CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 description 26
- CDBYLPFSWZWCQE-UHFFFAOYSA-L sodium carbonate Substances [Na+].[Na+].[O-]C([O-])=O CDBYLPFSWZWCQE-UHFFFAOYSA-L 0.000 description 26
- 229910000029 sodium carbonate Inorganic materials 0.000 description 13
- LCPVQAHEFVXVKT-UHFFFAOYSA-N 2-(2,4-difluorophenoxy)pyridin-3-amine Chemical compound NC1=CC=CN=C1OC1=CC=C(F)C=C1F LCPVQAHEFVXVKT-UHFFFAOYSA-N 0.000 description 12
- 230000000052 comparative effect Effects 0.000 description 12
- 239000000835 fiber Substances 0.000 description 12
- CHQMHPLRPQMAMX-UHFFFAOYSA-L sodium persulfate Substances [Na+].[Na+].[O-]S(=O)(=O)OOS([O-])(=O)=O CHQMHPLRPQMAMX-UHFFFAOYSA-L 0.000 description 12
- 230000002745 absorbent Effects 0.000 description 11
- 238000010438 heat treatment Methods 0.000 description 11
- 239000012299 nitrogen atmosphere Substances 0.000 description 11
- 238000002474 experimental method Methods 0.000 description 7
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 description 6
- 239000007788 liquid Substances 0.000 description 6
- 239000002952 polymeric resin Substances 0.000 description 6
- 229920003002 synthetic resin Polymers 0.000 description 6
- 238000012360 testing method Methods 0.000 description 6
- 239000011555 saturated liquid Substances 0.000 description 4
- 230000015572 biosynthetic process Effects 0.000 description 3
- 239000003795 chemical substances by application Substances 0.000 description 3
- 230000002349 favourable effect Effects 0.000 description 3
- 230000003472 neutralizing effect Effects 0.000 description 3
- JZEXORLUKMQOFA-UHFFFAOYSA-N 2-(1-ethoxyethyl)-2-(hydroxymethyl)propane-1,3-diol prop-2-enoic acid Chemical compound OC(=O)C=C.OC(=O)C=C.OC(=O)C=C.CCOC(C)C(CO)(CO)CO JZEXORLUKMQOFA-UHFFFAOYSA-N 0.000 description 2
- OZAIFHULBGXAKX-UHFFFAOYSA-N 2-(2-cyanopropan-2-yldiazenyl)-2-methylpropanenitrile Chemical compound N#CC(C)(C)N=NC(C)(C)C#N OZAIFHULBGXAKX-UHFFFAOYSA-N 0.000 description 2
- 206010021639 Incontinence Diseases 0.000 description 2
- 210000002700 urine Anatomy 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- FWWXYLGCHHIKNY-UHFFFAOYSA-N 2-ethoxyethyl prop-2-enoate Chemical compound CCOCCOC(=O)C=C FWWXYLGCHHIKNY-UHFFFAOYSA-N 0.000 description 1
- 239000004342 Benzoyl peroxide Substances 0.000 description 1
- OMPJBNCRMGITSC-UHFFFAOYSA-N Benzoylperoxide Chemical compound C=1C=CC=CC=1C(=O)OOC(=O)C1=CC=CC=C1 OMPJBNCRMGITSC-UHFFFAOYSA-N 0.000 description 1
- YIVJZNGAASQVEM-UHFFFAOYSA-N Lauroyl peroxide Chemical compound CCCCCCCCCCCC(=O)OOC(=O)CCCCCCCCCCC YIVJZNGAASQVEM-UHFFFAOYSA-N 0.000 description 1
- SECXISVLQFMRJM-UHFFFAOYSA-N N-Methylpyrrolidone Chemical compound CN1CCCC1=O SECXISVLQFMRJM-UHFFFAOYSA-N 0.000 description 1
- 239000002202 Polyethylene glycol Substances 0.000 description 1
- UIIMBOGNXHQVGW-DEQYMQKBSA-M Sodium bicarbonate-14C Chemical compound [Na+].O[14C]([O-])=O UIIMBOGNXHQVGW-DEQYMQKBSA-M 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 235000019400 benzoyl peroxide Nutrition 0.000 description 1
- 150000001875 compounds Chemical group 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 125000004386 diacrylate group Chemical group 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 231100000252 nontoxic Toxicity 0.000 description 1
- 230000003000 nontoxic effect Effects 0.000 description 1
- 238000011056 performance test Methods 0.000 description 1
- 229920001223 polyethylene glycol Polymers 0.000 description 1
- USHAGKDGDHPEEY-UHFFFAOYSA-L potassium persulfate Chemical compound [K+].[K+].[O-]S(=O)(=O)OOS([O-])(=O)=O USHAGKDGDHPEEY-UHFFFAOYSA-L 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 238000001223 reverse osmosis Methods 0.000 description 1
Classifications
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- 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
- A61F13/45—Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators characterised by the shape
- A61F13/49—Absorbent articles specially adapted to be worn around the waist, e.g. diapers
- A61F13/496—Absorbent articles specially adapted to be worn around the waist, e.g. diapers in the form of pants or briefs
-
- 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
- A61F13/15577—Apparatus or processes for manufacturing
- A61F13/15617—Making absorbent pads from fibres or pulverulent material with or without treatment of the fibres
-
- 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
- A61F13/53—Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators characterised by the absorbing medium
- A61F13/534—Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators characterised by the absorbing medium having an inhomogeneous composition through the thickness of the pad
-
- 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
- A61L15/22—Bandages, dressings or absorbent pads for physiological fluids such as urine or blood, e.g. sanitary towels, tampons containing macromolecular materials
- A61L15/24—Macromolecular compounds obtained by reactions only involving carbon-to-carbon unsaturated bonds; Derivatives thereof
-
- 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
- A61L15/22—Bandages, dressings or absorbent pads for physiological fluids such as urine or blood, e.g. sanitary towels, tampons containing macromolecular materials
- A61L15/28—Polysaccharides or their derivatives
-
- 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
- A61F2013/15008—Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators characterized by the use
- A61F2013/15121—Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators characterized by the use for mild incontinence
-
- 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
- A61F13/15577—Apparatus or processes for manufacturing
- A61F2013/15821—Apparatus or processes for manufacturing characterized by the apparatus for manufacturing
- A61F2013/15934—Apparatus or processes for manufacturing characterized by the apparatus for manufacturing for making non-woven
- A61F2013/15991—Apparatus or processes for manufacturing characterized by the apparatus for manufacturing for making non-woven in making composite multi-layered product
Landscapes
- Health & Medical Sciences (AREA)
- Engineering & Computer Science (AREA)
- General Health & Medical Sciences (AREA)
- Epidemiology (AREA)
- Veterinary Medicine (AREA)
- Public Health (AREA)
- Life Sciences & Earth Sciences (AREA)
- Animal Behavior & Ethology (AREA)
- Heart & Thoracic Surgery (AREA)
- Vascular Medicine (AREA)
- Biomedical Technology (AREA)
- Chemical & Material Sciences (AREA)
- Hematology (AREA)
- Materials Engineering (AREA)
- Manufacturing & Machinery (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Absorbent Articles And Supports Therefor (AREA)
Abstract
The application discloses an AB combined core for an adult diaper and a preparation method thereof, and relates to the field of sanitary products. The AB composite core comprises a first coating layer, an AB composite core layer and a second coating layer which are sequentially arranged, wherein the AB composite core layer comprises an A core layer and a B core layer, the A core layer is a composite core body formed by pressing nonwoven paper, nonwoven fabrics and a water-absorbent resin machine, and raw materials of the B core layer comprise monomers, neutralizers, cross-linking agents, initiators, wood pulp and solvents. The monomer comprises ethoxyethoxy ethyl acrylate, ethoxylated trimethylolpropane triacrylate and other acrylate monomers in a specific ratio. The AB combination core body has the advantages of high absorption rate, high saturated absorption capacity, low average expansion thickness and low rewet capacity, is not easy to fault or stick together, and has the effect of dry, comfortable and comfortable wearing.
Description
Technical Field
The invention relates to the field of sanitary products, in particular to an AB combined core for an adult diaper and a preparation method thereof.
Background
The disposable diaper is a disposable paper incontinence article, and is mainly suitable for incontinent adults. One of the key properties of the adult diaper is the liquid absorption amount, and the liquid absorption amount of the diaper is closely related to the material of the diaper core.
At present, the common paper diaper cores in the related art mainly comprise two kinds. One is a core body which is formed by mixing wood pulp and water-absorbent resin in an unordered way and has a loose structure, and the other is a composite core body which is formed by pressing dust-free paper, non-woven fabrics and the water-absorbent resin by a machine.
The first core has the advantage of good flow guiding effect, but faults are easy to occur, and after urine is absorbed, the average expansion thickness is large, so that on one hand, a user wears uncomfortable, on the other hand, local parts are protruded after the paper diaper is expanded, and embarrassing problems are easy to cause. The second core has the advantages of difficult fault and no lump formation, but has the problems of slower liquid absorption rate and easy reverse osmosis. Therefore, how to provide a core body for an adult diaper, which has the advantages of high liquid absorption speed, less rewet, small average expansion thickness and difficult fault and lump formation, has important research significance.
Disclosure of Invention
The AB combination core for the adult diaper is provided in the application for improving the absorption performance of the adult diaper and the wearing comfort of the diaper.
In a first aspect, the AB composite core for an adult diaper provided by the application adopts the following technical scheme: the AB composite core body for the adult paper diaper comprises a first coating layer, an AB composite core layer and a second coating layer which are sequentially arranged, wherein the AB composite core layer comprises an A core layer and a B core layer, the A core layer is a composite core body formed by pressing nonwoven paper, nonwoven fabrics and a water-absorbent resin machine, and raw materials of the B core layer comprise 100 parts by weight of monomers, 1-2 parts by weight of neutralizer, 0.1-0.3 part by weight of cross-linking agent, 0.1-0.3 part by weight of initiator, 8-12 parts by weight of wood pulp and 30-40 parts by weight of solvent;
the monomer comprises ethoxyethoxy ethyl acrylate, ethoxylated trimethylolpropane triacrylate and other acrylate monomers, wherein the weight ratio of the ethoxyethoxy ethyl acrylate to the ethoxylated trimethylolpropane triacrylate to the other acrylate monomers is (1-3): (2-4): 5.
Through adopting above-mentioned technical scheme, when the monomer adopts ethoxy ethyl acrylate, ethoxytrimethylol propane triacrylate, other acrylate monomer three specific proportion's composition, the absorption multiplying power of B sandwich layer, saturated absorption capacity improve, and average inflation thickness and rewet volume are reduced, and are difficult for the fault or stick together, are favorable to keeping the panty-shape diapers in dry and comfortable sense when the user dresses the panty-shape diapers to improve.
Preferably, the monomers comprise ethoxyethoxyethyl acrylate, ethoxylated trimethylolpropane triacrylate and other acrylate monomers, and the weight ratio of the ethoxyethoxyethyl acrylate, ethoxylated trimethylolpropane triacrylate and the other acrylate monomers is 2:3:5.
By adopting the technical scheme, when the weight ratio of the ethoxyethoxy ethyl acrylate to the ethoxylated trimethylolpropane triacrylate to other acrylate monomers is 2:3:5, the rewet amount can be further effectively reduced.
Optionally, the other acrylate monomer is selected from any one or a combination of a plurality of methyl acrylate, ethyl acrylate, propyl acrylate, butyl acrylate, methyl methacrylate, ethyl methacrylate and hydroxyethyl acrylate.
Preferably, the B core layer further comprises 5-10 parts by weight of a modifier, wherein the modifier comprises acrylamide and carboxymethyl chitosan, and the weight ratio of the acrylamide to the carboxymethyl chitosan is 1: (0.1-0.2).
Further preferably, the weight ratio of the acrylamide to the carboxymethyl chitosan is 1:0.15.
Through adopting above-mentioned technical scheme, adopt acrylamide and carboxymethyl chitosan to modify polymer resin jointly, can further improve the bonding stability between wood pulp and the polymer resin for the wood pulp is difficult for droing, even the sandwich layer still has excellent absorption rate after the friction.
Preferably, the viscosity of the carboxymethyl chitosan ranges from 100 to 200mPa.s.
Optionally, the cross-linking agent is a mixture of pentaerythritol triallyl ether and trimethylolpropane triacrylate, and the weight ratio of the pentaerythritol triallyl ether to the trimethylolpropane triacrylate is 2: (2-3).
By adopting the technical scheme, the weight ratio of pentaerythritol triallyl ether to trimethylolpropane triacrylate is 2: when the composition of (2-3) is used as a crosslinking agent, the absorption capacity and saturated liquid absorption capacity of the B core layer can be further improved.
Optionally, the initiator is selected from one or more of peroxide, persulfate and azo compound.
Optionally, the neutralizing agent is any one or a combination of a plurality of alkali metal hydroxides, alkali metal oxides, alkali metal carbonates or alkali metal hydrogencarbonates.
In a second aspect, the preparation method of the AB combination core for the adult diaper provided by the application adopts the following technical scheme:
A preparation method of an AB combined core body for an adult paper diaper comprises the following steps of
Compounding the core layer A on one side of the first coating layer to obtain a composite material A;
Mixing and prepolymerizing the raw materials of the core layer B to obtain prepolymer, then spraying the prepolymer on one side of the composite material A, which is away from the first coating layer, and forming the core layer B on one side of the composite material A, which is away from the first coating layer;
And (3) compounding a second cladding layer on one side of the B core layer, which is away from the A core layer, so as to obtain the AB combined core.
In summary, the technical scheme of the application at least comprises the following beneficial effects:
The AB composite core has the advantages of high absorption rate and high saturated absorption capacity;
the AB composite core has the advantages of low average expansion thickness and low rewet;
AB composite core is difficult to fault or stick together.
Detailed Description
The utility model provides an AB combination core for adult diaper, includes first coating, AB combination sandwich layer and the second coating that sets gradually, and first coating and second coating all adopt dust-free paper, and AB combination sandwich layer includes A sandwich layer and B sandwich layer, and A sandwich layer selects for use nonwoven paper, non-woven fabrics and the compound core that water-absorbent resin machine pressed, is favorable to improving the water conservancy diversion effect, promotes urine evenly dispersed to B sandwich layer. The core layer B is a core body formed by randomly mixing wood pulp and high polymer resin, so that the flatness and softness of the combined core body are maintained, the liquid absorption rate and liquid absorption amount are improved, and the problems of lump formation, hardening or fault of the core body are prevented.
Specifically, the raw materials of the B core layer comprise 100 parts by weight of monomers, 1-2 parts by weight of neutralizing agents, 0.1-0.3 part by weight of cross-linking agents, 0.1-0.3 part by weight of initiator, 8-12 parts by weight of wood pulp and 30-40 parts by weight of solvents.
The monomer comprises ethoxyethoxy ethyl acrylate, ethoxylated trimethylolpropane triacrylate and other acrylate monomers, wherein the weight ratio of the ethoxyethoxy ethyl acrylate to the ethoxylated trimethylolpropane triacrylate to the other acrylate monomers is (1-3): (2-4): 5. when the monomer is adopted, the combined core body has basic performances such as softness, flatness, toughness, high absorption rate, high saturated liquid absorption capacity and the like, the expansion rate of the B core layer after water absorption can be reduced, and the comfort of an adult when wearing the paper diaper can be improved.
Wherein, the other acrylic ester monomer is selected from any one or a combination of a plurality of methyl acrylate, ethyl acrylate, propyl acrylate, butyl acrylate, methyl methacrylate, ethyl methacrylate and hydroxyethyl acrylate.
The neutralizing agent is one or several of alkali metal hydroxide, alkali metal oxide, alkali metal carbonate and alkali metal bicarbonate. Such as sodium hydroxide, sodium bicarbonate, sodium carbonate, or the like, preferably sodium carbonate or sodium hydroxide.
The cross-linking agent is selected from any one or a combination of a plurality of pentaerythritol triallyl ether, polyethylene glycol diacrylate and trimethylolpropane triacrylate, preferably a mixture of the pentaerythritol triallyl ether and the trimethylolpropane triacrylate, and the weight ratio of the pentaerythritol triallyl ether to the trimethylolpropane triacrylate is 2: (2-3) the absorption capacity and the saturated liquid absorption capacity of the B core layer can be further improved.
The initiator is selected from one or more of peroxide, persulfate and azo compound. For example, lauroyl peroxide, benzoyl peroxide, potassium persulfate, sodium persulfate, azobisisobutyronitrile, or the like.
The wood pulp is preferably wood pulp having an average fiber length of 2 to 3mm and an absorption capacity of 10 to 11 g/g.
The solvent is selected from ethanol or N-methyl pyrrolidone. Preferably non-toxic and environmentally friendly ethanol.
Preferably, the B core layer also comprises 5-10 parts by weight of modifier, wherein the modifier comprises acrylamide and carboxymethyl chitosan, and the weight ratio of the acrylamide to the carboxymethyl chitosan is 1: (0.1-0.2), is favorable for improving the combination stability between wood pulp and high polymer resin, so that the wood pulp is not easy to fall off, even if the core layer is rubbed, the core layer still has excellent absorption rate, and the core body cannot stick together and generate faults.
Preferably, the weight ratio of the acrylamide to the carboxymethyl chitosan is 1:0.15.
Preferably, the viscosity of the carboxymethyl chitosan ranges from 100 to 200mPa.s, so that the B core layer with wear resistance, no lump and no fault is obtained.
The present application will be described in further detail with reference to specific examples and comparative examples.
Examples
Example 1
The AB combination core body for the adult paper diaper comprises a first coating layer, an A core layer, a B core layer and a second coating layer which are sequentially arranged.
The A core layer comprises dust-free paper, non-woven fabrics and a polyacrylic acid water-absorbing resin layer which are sequentially arranged, wherein the dust-free paper is purchased from Baotou, and the model is BT-023; the non-woven fabric adopts a non-woven fabric with the star-shaped cargo number pp-001; the polyacrylic acid water-absorbing resin layer adopts polyacrylic acid resin with the molecular weight of 25 ten thousand and the thickness of 0.2mm.
The B core layer comprises 100kg of monomer, 1kg of sodium carbonate, 0.1kg of pentaerythritol triallyl ether, 0.3kg of sodium persulfate, 8kg of wood pulp and 30kg of ethanol solution with the mass fraction of 50 percent.
Wherein the monomers comprise ethoxyethoxyethyl acrylate, ethoxylated trimethylolpropane triacrylate and methyl methacrylate, and the weight ratio of the ethoxyethoxyethyl acrylate to the ethoxylated trimethylolpropane triacrylate to the methyl methacrylate is 1:4:5.
The average fiber length of the wood pulp was 2.4mm and the absorbent capacity was 10.6g/g.
The first coating layer and the second coating layer are made of dust-free paper which is purchased from Baotou and has the model BT-023.
The preparation method of the AB combination core body for the adult paper diaper comprises the following steps:
compounding the core layer A on one side of the first cladding layer to obtain a composite material A;
Uniformly mixing the raw materials of the core layer B, heating to 60 ℃ in a nitrogen atmosphere, reacting for 7 hours to obtain a prepolymer, spraying the prepolymer on one side of the composite material A, which is far away from the first coating layer, and forming the core layer B on one side of the composite material A, which is far away from the first coating layer, wherein the thickness of the core layer B is 1mm;
And (3) compounding a second cladding layer on one side of the B core layer, which is away from the A core layer, so as to obtain the AB combined core.
Example 2
The AB combination core body for the adult paper diaper comprises a first coating layer, an A core layer, a B core layer and a second coating layer which are sequentially arranged.
The A core layer comprises dust-free paper, non-woven fabrics and a polyacrylic acid water-absorbing resin layer which are sequentially arranged, wherein the dust-free paper is purchased from Baotou, and the model is BT-023; the non-woven fabric adopts a non-woven fabric with the star-shaped cargo number pp-001; the polyacrylic acid water-absorbing resin layer adopts polyacrylic acid resin with the molecular weight of 25 ten thousand and the thickness of 0.2mm.
The B core layer comprises 100kg of monomer, 1.5kg of sodium carbonate, 0.2kg of pentaerythritol triallyl ether, 0.2kg of sodium persulfate, 10kg of wood pulp and 35kg of ethanol solution with the mass fraction of 50 percent.
Wherein the monomers comprise ethoxyethoxyethyl acrylate, ethoxylated trimethylolpropane triacrylate and methyl methacrylate, and the weight ratio of the ethoxyethoxyethyl acrylate to the ethoxylated trimethylolpropane triacrylate to the methyl methacrylate is 2:3:5.
The average fiber length of the wood pulp was 2.4mm and the absorbent capacity was 10.6g/g.
The first coating layer and the second coating layer are made of dust-free paper which is purchased from Baotou and has the model BT-023.
The preparation method of the AB combination core body for the adult paper diaper comprises the following steps:
Compounding the core layer A on one side of the first coating layer to obtain a composite material A;
uniformly mixing the raw materials of the core layer B, heating to 65 ℃ in a nitrogen atmosphere, reacting for 6 hours to obtain a prepolymer, spraying the prepolymer on one side of the composite material A, which is far away from the first coating layer, and forming the core layer B on one side of the composite material A, which is far away from the first coating layer, wherein the thickness of the core layer B is 1mm;
And (3) compounding a second cladding layer on one side of the B core layer, which is away from the A core layer, so as to obtain the AB combined core.
Example 3
The AB combination core body for the adult paper diaper comprises a first coating layer, an A core layer, a B core layer and a second coating layer which are sequentially arranged.
The A core layer comprises dust-free paper, non-woven fabrics and a polyacrylic acid water-absorbing resin layer which are sequentially arranged, wherein the dust-free paper is purchased from Baotou, and the model is BT-023; the non-woven fabric adopts a non-woven fabric with the star-shaped cargo number pp-001; the polyacrylic acid water-absorbing resin layer adopts polyacrylic acid resin with the molecular weight of 25 ten thousand and the thickness of 0.2mm.
The B core layer comprises 100kg of monomer, 2kg of sodium carbonate, 0.3kg of pentaerythritol triallyl ether, 0.1kg of sodium persulfate, 12kg of wood pulp and 40kg of ethanol solution with the mass fraction of 50 percent.
Wherein the monomers comprise ethoxyethoxyethyl acrylate, ethoxylated trimethylolpropane triacrylate and methyl methacrylate, and the weight ratio of the ethoxyethoxyethyl acrylate to the ethoxylated trimethylolpropane triacrylate to the methyl methacrylate is 3:2:5.
The average fiber length of the wood pulp was 2.4mm and the absorbent capacity was 10.6g/g.
The first coating layer and the second coating layer are made of dust-free paper which is purchased from Baotou and has the model BT-023.
The preparation method of the AB combination core body for the adult paper diaper comprises the following steps:
Compounding the core layer A on one side of the first coating layer to obtain a composite material A;
uniformly mixing the raw materials of the core layer B, heating to 55 ℃ in a nitrogen atmosphere, reacting for 8 hours to obtain a prepolymer, spraying the prepolymer on one side of the composite material A, which is far away from the first coating layer, and forming the core layer B on one side of the composite material A, which is far away from the first coating layer, wherein the thickness of the core layer B is 1mm;
And (3) compounding a second cladding layer on one side of the B core layer, which is away from the A core layer, so as to obtain the AB combined core.
Example 4
The AB combination core body for the adult paper diaper comprises a first coating layer, an A core layer, a B core layer and a second coating layer which are sequentially arranged.
The A core layer comprises dust-free paper, non-woven fabrics and a polyacrylic acid water-absorbing resin layer which are sequentially arranged, wherein the dust-free paper is purchased from Baotou, and the model is BT-023; the non-woven fabric adopts a non-woven fabric with the star-shaped cargo number pp-001; the polyacrylic acid water-absorbing resin layer adopts polyacrylic acid resin with the molecular weight of 25 ten thousand and the thickness of 0.2mm.
The B core layer comprises 100kg of monomer, 1kg of sodium carbonate, 0.1kg of pentaerythritol triallyl ether, 0.3kg of sodium persulfate, 8kg of wood pulp and 30kg of ethanol solution with the mass fraction of 50 percent.
Wherein the monomers comprise ethoxyethoxyethyl acrylate, ethoxylated trimethylolpropane triacrylate and methyl methacrylate thereof, and the weight ratio of the ethoxyethoxyethyl acrylate to the ethoxylated trimethylolpropane triacrylate to the methyl methacrylate is 2:3:5.
The average fiber length of the wood pulp was 2.4mm and the absorbent capacity was 10.6g/g.
The first coating layer and the second coating layer are made of dust-free paper which is purchased from Baotou and has the model BT-023.
The preparation method of the AB combination core body for the adult paper diaper comprises the following steps:
Compounding the core layer A on one side of the first coating layer to obtain a composite material A;
Uniformly mixing the raw materials of the core layer B, heating to 60 ℃ in a nitrogen atmosphere, reacting for 7 hours to obtain a prepolymer, spraying the prepolymer on one side of the composite material A, which is far away from the first coating layer, and forming the core layer B on one side of the composite material A, which is far away from the first coating layer, wherein the thickness of the core layer B is 1mm;
And (3) compounding a second cladding layer on one side of the B core layer, which is away from the A core layer, so as to obtain the AB combined core.
Example 5
The AB combination core body for the adult paper diaper comprises a first coating layer, an A core layer, a B core layer and a second coating layer which are sequentially arranged.
The A core layer comprises dust-free paper, non-woven fabrics and a polyacrylic acid water-absorbing resin layer which are sequentially arranged, wherein the dust-free paper is purchased from Baotou, and the model is BT-023; the non-woven fabric adopts a non-woven fabric with the star-shaped cargo number pp-001; the polyacrylic acid water-absorbing resin layer adopts polyacrylic acid resin with the molecular weight of 25 ten thousand and the thickness of 0.2mm.
The B core layer comprises 100kg of monomer, 1kg of sodium carbonate, 0.1kg of pentaerythritol triallyl ether, 0.3kg of sodium persulfate, 8kg of wood pulp and 30kg of ethanol solution with the mass fraction of 50 percent.
Wherein the monomers comprise ethoxyethoxyethyl acrylate, ethoxylated trimethylolpropane triacrylate and methyl methacrylate, and the weight ratio of the ethoxyethoxyethyl acrylate to the ethoxylated trimethylolpropane triacrylate to the methyl methacrylate is 3:2:5.
The average fiber length of the wood pulp was 2.4mm and the absorbent capacity was 10.6g/g.
The first coating layer and the second coating layer are made of dust-free paper which is purchased from Baotou and has the model BT-023.
The preparation method of the AB combination core body for the adult paper diaper comprises the following steps:
Compounding the core layer A on one side of the first coating layer to obtain a composite material A;
Uniformly mixing the raw materials of the core layer B, heating to 60 ℃ in a nitrogen atmosphere, reacting for 7 hours to obtain a prepolymer, spraying the prepolymer on one side of the composite material A, which is far away from the first coating layer, and forming the core layer B on one side of the composite material A, which is far away from the first coating layer, wherein the thickness of the core layer B is 1mm;
And (3) compounding a second cladding layer on one side of the B core layer, which is away from the A core layer, so as to obtain the AB combined core.
Example 6
The AB combination core body for the adult paper diaper comprises a first coating layer, an A core layer, a B core layer and a second coating layer which are sequentially arranged.
The A core layer comprises dust-free paper, non-woven fabrics and a polyacrylic acid water-absorbing resin layer which are sequentially arranged, wherein the dust-free paper is purchased from Baotou, and the model is BT-023; the non-woven fabric adopts a non-woven fabric with the star-shaped cargo number pp-001; the polyacrylic acid water-absorbing resin layer adopts polyacrylic acid resin with the molecular weight of 25 ten thousand and the thickness of 0.2mm.
The B core layer comprises 100kg of monomer, 1kg of sodium carbonate, 7.5kg of modifier, 0.1kg of pentaerythritol triallyl ether, 0.3kg of sodium persulfate, 8kg of wood pulp and 30kg of ethanol solution with the mass fraction of 50 percent.
Wherein the monomers comprise ethoxyethoxyethyl acrylate, ethoxylated trimethylolpropane triacrylate and methyl methacrylate, and the weight ratio of the ethoxyethoxyethyl acrylate to the ethoxylated trimethylolpropane triacrylate to the methyl methacrylate is 2:3:5.
The modifier is acrylamide.
The average fiber length of the wood pulp was 2.4mm and the absorbent capacity was 10.6g/g.
The first coating layer and the second coating layer are made of dust-free paper which is purchased from Baotou and has the model BT-023.
The preparation method of the AB combination core body for the adult paper diaper comprises the following steps:
Compounding the core layer A on one side of the first coating layer to obtain a composite material A;
Uniformly mixing the raw materials of the core layer B, heating to 60 ℃ in a nitrogen atmosphere, reacting for 7 hours to obtain a prepolymer, spraying the prepolymer on one side of the composite material A, which is far away from the first coating layer, and forming the core layer B on one side of the composite material A, which is far away from the first coating layer, wherein the thickness of the core layer B is 1mm;
And (3) compounding a second cladding layer on one side of the B core layer, which is away from the A core layer, so as to obtain the AB combined core.
Example 7
The AB combination core body for the adult paper diaper comprises a first coating layer, an A core layer, a B core layer and a second coating layer which are sequentially arranged.
The A core layer comprises dust-free paper, non-woven fabrics and a polyacrylic acid water-absorbing resin layer which are sequentially arranged, wherein the dust-free paper is purchased from Baotou, and the model is BT-023; the non-woven fabric adopts a non-woven fabric with the star-shaped cargo number pp-001; the polyacrylic acid water-absorbing resin layer adopts polyacrylic acid resin with the molecular weight of 25 ten thousand and the thickness of 0.2mm.
The B core layer comprises 100kg of monomer, 1kg of sodium carbonate, 7.5kg of modifier, 0.1kg of pentaerythritol triallyl ether, 0.3kg of sodium persulfate, 8kg of wood pulp and 30kg of ethanol solution with the mass fraction of 50 percent.
Wherein the monomers comprise ethoxyethoxyethyl acrylate, ethoxylated trimethylolpropane triacrylate and methyl methacrylate, and the weight ratio of the ethoxyethoxyethyl acrylate to the ethoxylated trimethylolpropane triacrylate to the methyl methacrylate is 2:3:5.
The modifier is carboxymethyl chitosan. Wherein the viscosity of the carboxymethyl chitosan is 100mPa.s.
The average fiber length of the wood pulp was 2.4mm and the absorbent capacity was 10.6g/g.
The first coating layer and the second coating layer are made of dust-free paper which is purchased from Baotou and has the model BT-023.
The preparation method of the AB combination core body for the adult paper diaper comprises the following steps:
Compounding the core layer A on one side of the first coating layer to obtain a composite material A;
Uniformly mixing the raw materials of the core layer B, heating to 60 ℃ in a nitrogen atmosphere, reacting for 7 hours to obtain a prepolymer, spraying the prepolymer on one side of the composite material A, which is far away from the first coating layer, and forming the core layer B on one side of the composite material A, which is far away from the first coating layer, wherein the thickness of the core layer B is 1mm;
And (3) compounding a second cladding layer on one side of the B core layer, which is away from the A core layer, so as to obtain the AB combined core.
Example 8
The AB combination core body for the adult paper diaper comprises a first coating layer, an A core layer, a B core layer and a second coating layer which are sequentially arranged.
The A core layer comprises dust-free paper, non-woven fabrics and a polyacrylic acid water-absorbing resin layer which are sequentially arranged, wherein the dust-free paper is purchased from Baotou, and the model is BT-023; the non-woven fabric adopts a non-woven fabric with the star-shaped cargo number pp-001; the polyacrylic acid water-absorbing resin layer adopts polyacrylic acid resin with the molecular weight of 25 ten thousand and the thickness of 0.2mm.
The B core layer comprises 100kg of monomer, 1kg of sodium carbonate, 7.5kg of modifier, 0.1kg of pentaerythritol triallyl ether, 0.3kg of sodium persulfate, 8kg of wood pulp and 30kg of ethanol solution with the mass fraction of 50 percent.
Wherein the monomers comprise ethoxyethoxyethyl acrylate, ethoxylated trimethylolpropane triacrylate and methyl methacrylate, and the weight ratio of the ethoxyethoxyethyl acrylate to the ethoxylated trimethylolpropane triacrylate to the methyl methacrylate is 2:3:5.
The modifier comprises acrylamide and carboxymethyl chitosan, and the weight ratio of the acrylamide to the carboxymethyl chitosan is 1:1. Wherein the viscosity of the carboxymethyl chitosan is 100mPa.s.
The average fiber length of the wood pulp was 2.4mm and the absorbent capacity was 10.6g/g.
The first coating layer and the second coating layer are made of dust-free paper which is purchased from Baotou and has the model BT-023.
The preparation method of the AB combination core body for the adult paper diaper comprises the following steps:
Compounding the core layer A on one side of the first coating layer to obtain a composite material A;
Uniformly mixing the raw materials of the core layer B, heating to 60 ℃ in a nitrogen atmosphere, reacting for 7 hours to obtain a prepolymer, spraying the prepolymer on one side of the composite material A, which is far away from the first coating layer, and forming the core layer B on one side of the composite material A, which is far away from the first coating layer, wherein the thickness of the core layer B is 1mm;
And (3) compounding a second cladding layer on one side of the B core layer, which is away from the A core layer, so as to obtain the AB combined core.
Example 9
The AB combination core body for the adult paper diaper comprises a first coating layer, an A core layer, a B core layer and a second coating layer which are sequentially arranged.
The A core layer comprises dust-free paper, non-woven fabrics and a polyacrylic acid water-absorbing resin layer which are sequentially arranged, wherein the dust-free paper is purchased from Baotou, and the model is BT-023; the non-woven fabric adopts a non-woven fabric with the star-shaped cargo number pp-001; the polyacrylic acid water-absorbing resin layer adopts polyacrylic acid resin with the molecular weight of 25 ten thousand and the thickness of 0.2mm.
The B core layer comprises 100kg of monomer, 1kg of sodium carbonate, 7.5kg of modifier, 0.1kg of pentaerythritol triallyl ether, 0.3kg of sodium persulfate, 8kg of wood pulp and 30kg of ethanol solution with the mass fraction of 50 percent.
Wherein the monomers comprise ethoxyethoxyethyl acrylate, ethoxylated trimethylolpropane triacrylate and methyl methacrylate, and the weight ratio of the ethoxyethoxyethyl acrylate to the ethoxylated trimethylolpropane triacrylate to the methyl methacrylate is 2:3:5.
The modifier comprises acrylamide and carboxymethyl chitosan, and the weight ratio of the acrylamide to the carboxymethyl chitosan is 1:0.15. Wherein the viscosity of the carboxymethyl chitosan is 100mPa.s.
The average fiber length of the wood pulp was 2.4mm and the absorbent capacity was 10.6g/g.
The first coating layer and the second coating layer are made of dust-free paper which is purchased from Baotou and has the model BT-023.
The preparation method of the AB combination core body for the adult paper diaper comprises the following steps:
Compounding the core layer A on one side of the first coating layer to obtain a composite material A;
Uniformly mixing the raw materials of the core layer B, heating to 60 ℃ in a nitrogen atmosphere, reacting for 7 hours to obtain a prepolymer, spraying the prepolymer on one side of the composite material A, which is far away from the first coating layer, and forming the core layer B on one side of the composite material A, which is far away from the first coating layer, wherein the thickness of the core layer B is 1mm;
And (3) compounding a second cladding layer on one side of the B core layer, which is away from the A core layer, so as to obtain the AB combined core.
Example 10
The AB combination core body for the adult paper diaper comprises a first coating layer, an A core layer, a B core layer and a second coating layer which are sequentially arranged.
The A core layer comprises dust-free paper, non-woven fabrics and a polyacrylic acid water-absorbing resin layer which are sequentially arranged, wherein the dust-free paper is purchased from Baotou, and the model is BT-023; the non-woven fabric adopts a non-woven fabric with the star-shaped cargo number pp-001; the polyacrylic acid water-absorbing resin layer adopts polyacrylic acid resin with the molecular weight of 25 ten thousand and the thickness of 0.2mm.
The B core layer comprises 100kg of monomer, 1kg of sodium carbonate, 7.5kg of modifier, 0.1kg of pentaerythritol triallyl ether, 0.3kg of sodium persulfate, 8kg of wood pulp and 30kg of ethanol solution with the mass fraction of 50 percent.
Wherein the monomers comprise ethoxyethoxyethyl acrylate, ethoxylated trimethylolpropane triacrylate and methyl methacrylate, and the weight ratio of the ethoxyethoxyethyl acrylate to the ethoxylated trimethylolpropane triacrylate to the methyl methacrylate is 2:3:5.
The modifier comprises acrylamide and carboxymethyl chitosan, and the weight ratio of the acrylamide to the carboxymethyl chitosan is 5:1. Wherein the viscosity of the carboxymethyl chitosan is 100mPa.s.
The average fiber length of the wood pulp was 2.4mm and the absorbent capacity was 10.6g/g.
The first coating layer and the second coating layer are made of dust-free paper which is purchased from Baotou and has the model BT-023.
The preparation method of the AB combination core body for the adult paper diaper comprises the following steps:
Compounding the core layer A on one side of the first coating layer to obtain a composite material A;
Uniformly mixing the raw materials of the core layer B, heating to 60 ℃ in a nitrogen atmosphere, reacting for 7 hours to obtain a prepolymer, spraying the prepolymer on one side of the composite material A, which is far away from the first coating layer, and forming the core layer B on one side of the composite material A, which is far away from the first coating layer, wherein the thickness of the core layer B is 1mm;
And (3) compounding a second cladding layer on one side of the B core layer, which is away from the A core layer, so as to obtain the AB combined core.
Example 11
The AB combination core body for the adult paper diaper comprises a first coating layer, an A core layer, a B core layer and a second coating layer which are sequentially arranged.
The A core layer comprises dust-free paper, non-woven fabrics and a polyacrylic acid water-absorbing resin layer which are sequentially arranged, wherein the dust-free paper is purchased from Baotou, and the model is BT-023; the non-woven fabric adopts a non-woven fabric with the star-shaped cargo number pp-001; the polyacrylic acid water-absorbing resin layer adopts polyacrylic acid resin with the molecular weight of 25 ten thousand and the thickness of 0.2mm.
The B core layer comprises 100kg of monomer, 1kg of sodium carbonate, 7.5kg of modifier, 0.04kg of pentaerythritol triallyl ether, 0.06kg of trimethylolpropane triacrylate, 0.3kg of sodium persulfate, 8kg of wood pulp and 30kg of ethanol solution with the mass fraction of 50 percent.
Wherein the monomers comprise ethoxyethoxyethyl acrylate, ethoxylated trimethylolpropane triacrylate and methyl methacrylate, and the weight ratio of the ethoxyethoxyethyl acrylate to the ethoxylated trimethylolpropane triacrylate to the methyl methacrylate is 2:3:5.
The modifier comprises acrylamide and carboxymethyl chitosan, and the weight ratio of the acrylamide to the carboxymethyl chitosan is 1:0.15. Wherein the viscosity of the carboxymethyl chitosan is 100mPa.s.
The average fiber length of the wood pulp was 2.4mm and the absorbent capacity was 10.6g/g.
The first coating layer and the second coating layer are made of dust-free paper which is purchased from Baotou and has the model BT-023.
The preparation method of the AB combination core body for the adult paper diaper comprises the following steps:
Compounding the core layer A on one side of the first coating layer to obtain a composite material A;
Uniformly mixing the raw materials of the core layer B, heating to 60 ℃ in a nitrogen atmosphere, reacting for 7 hours to obtain a prepolymer, spraying the prepolymer on one side of the composite material A, which is far away from the first coating layer, and forming the core layer B on one side of the composite material A, which is far away from the first coating layer, wherein the thickness of the core layer B is 1mm;
And (3) compounding a second cladding layer on one side of the B core layer, which is away from the A core layer, so as to obtain the AB combined core.
Comparative example
Comparative example 1
An AB composite core for an adult diaper is different from example 1 in that:
The ethoxyethoxyethyl acrylate in the monomer is replaced by equal amount of ethoxylated trimethylolpropane triacrylate.
Comparative example 2
An AB composite core for an adult diaper is different from example 1 in that:
The ethoxylated trimethylolpropane triacrylate in the monomer was replaced with an equal amount of ethoxyethoxyethyl acrylate.
Comparative example 3
An AB composite core for an adult diaper is different from example 1 in that:
The monomers comprise ethoxyethoxyethyl acrylate, ethoxylated trimethylolpropane triacrylate and methyl methacrylate, and the weight ratio of the ethoxyethoxyethyl acrylate to the ethoxylated trimethylolpropane triacrylate to the methyl methacrylate is 1:1:8.
Comparative example 4
An AB composite core for an adult diaper is different from example 1 in that:
The monomers comprise ethoxyethoxyethyl acrylate, hydroxyethyl acrylate and methyl methacrylate, and the weight ratio of ethoxyethoxyethyl acrylate to hydroxyethyl acrylate to methyl methacrylate is 1:4:5.
Comparative example 5
An AB composite core for an adult diaper is different from example 1 in that:
The monomers comprise hydroxyethyl acrylate, ethoxylated trimethylolpropane triacrylate and methyl methacrylate, and the weight ratio of the hydroxyethyl acrylate to the ethoxylated trimethylolpropane triacrylate to the methyl methacrylate is 1:4:5.
Comparative example 6
An AB composite core for an adult diaper is different from example 1 in that:
The monomers comprise hydroxyethyl acrylate, ethyl acrylate and methyl methacrylate, and the weight ratio of the hydroxyethyl acrylate to the ethyl acrylate to the methyl methacrylate is 1:4:5.
Performance test data
Experiment 1, absorption capacity: the detection is carried out with reference to the requirements of GB/T28004.2-2021. The test object includes the AB composite core body prepared in each of the above examples and comparative examples, and the a 1B1 core body prepared by rubbing each of the examples against the B core layer in the comparative examples 1000 times and then compounding with the first clad layer, the a core layer, and the second clad layer.
Experiment 2, saturated absorption: the saturated absorption of the AB combination cores prepared in each example and comparative example was examined with reference to the requirements of GB/T28004.2-2021.
Experiment 3, average expansion thickness: and (3) taking the AB combination core body after absorption saturation in the experiment 2 as a test object, directionally selecting 15 points, and testing the average thickness of the 15 points to obtain the average expansion thickness.
Experiment 4, rewet amount: the test was performed with reference to the requirements of GB/T28004.2-2021, and the quality of the surface of the sample before and after the test was recorded as poor.
Experiment 5, whether fault or lump: the AB composite core after absorption saturation in experiment 2 was used as the test object.
TABLE 1
Combining example 1 with comparative examples 1-6 and combining the data in table 1, it can be seen that: when the monomer adopts the composition of ethoxyethoxy ethyl acrylate, ethoxytrimethylolpropane triacrylate and other acrylate monomers in a specific proportion, the absorption rate and saturated absorption capacity of the B core layer are improved, the average expansion thickness and the rewet capacity are reduced, and the diaper is not easy to fault or stick up, so that the diaper is in a dry state, and the comfort of a user wearing the diaper is improved.
Combining example 1 with examples 4-5 and combining the data in table 1, it can be seen that: the composition of ethoxyethoxy ethyl acrylate, ethoxylated trimethylolpropane triacrylate and other acrylate monomers in specific proportion can further effectively reduce rewet.
Combining example 4 with examples 6-10 and combining the data in Table 1, it can be seen that: the acrylamide and the carboxymethyl chitosan are adopted to jointly modify the high polymer resin, so that the combination stability between the wood pulp and the high polymer resin can be further improved, the wood pulp is not easy to fall off, and the B core layer has excellent absorption multiplying power after friction.
Combining example 9 with example 11 and combining the data in table 1, it can be seen that: when the cross-linking agent adopts a mixture of pentaerythritol triallyl ether and trimethylolpropane triacrylate in a specific ratio, the absorption rate and saturated liquid absorption capacity of the B core layer can be further improved.
The present embodiment is merely illustrative of the present application and not limiting, and one skilled in the art, after having read the present specification, may make modifications to the embodiment without creative contribution as required, but is protected by patent law within the scope of the claims of the present application.
Claims (8)
1. An AB combination core for an adult diaper, which is characterized in that: the composite coating comprises a first coating layer, an AB composite core layer and a second coating layer which are sequentially arranged, wherein the AB composite core layer comprises an A core layer and a B core layer, the A core layer is a composite core body formed by pressing nonwoven paper, nonwoven fabrics and a water-absorbent resin machine, and the B core layer comprises 100 parts by weight of monomers, 1-2 parts by weight of neutralizers, 0.1-0.3 part by weight of cross-linking agents, 0.1-0.3 part by weight of initiator, 8-12 parts by weight of wood pulp and 30-40 parts by weight of solvents;
The monomer comprises ethoxyethoxy ethyl acrylate, ethoxylated trimethylolpropane triacrylate and other acrylate monomers, wherein the weight ratio of the ethoxyethoxy ethyl acrylate to the ethoxylated trimethylolpropane triacrylate to the other acrylate monomers is (1-3): (2-4): 5, a step of;
The B core layer also comprises 5-10 parts by weight of modifier, wherein the modifier comprises acrylamide and carboxymethyl chitosan, and the weight ratio of the acrylamide to the carboxymethyl chitosan is 1: (0.1-0.2);
The viscosity of the carboxymethyl chitosan ranges from 100 to 200mPa.s.
2. The AB module core for an adult diaper of claim 1, wherein: the weight ratio of the ethoxyethoxy ethyl acrylate to the ethoxylated trimethylolpropane triacrylate to other acrylate monomers is 2:3:5.
3. The AB module core for an adult diaper of claim 1, wherein: the other acrylic ester monomer is selected from any one or a combination of a plurality of methyl acrylate, ethyl acrylate, propyl acrylate, butyl acrylate, methyl methacrylate, ethyl methacrylate and hydroxyethyl acrylate.
4. The AB module core for an adult diaper of claim 1, wherein: the weight ratio of the acrylamide to the carboxymethyl chitosan is 1:0.15.
5. The AB module core for an adult diaper of claim 1, wherein: the cross-linking agent is a mixture of pentaerythritol triallyl ether and trimethylolpropane triacrylate, and the weight ratio of the pentaerythritol triallyl ether to the trimethylolpropane triacrylate is 2: (2-3).
6. The AB module core for an adult diaper of claim 1, wherein: the initiator is selected from one or more of peroxide, persulfate and azo compound.
7. The AB module core for an adult diaper of claim 1, wherein: the neutralizer is one or a combination of several of alkali metal hydroxide, alkali metal oxide, alkali metal carbonate or alkali metal bicarbonate.
8. The method for preparing the AB module core for the adult diaper according to any one of claims 1 to 7, wherein: the method comprises the following steps:
Compounding the core layer A on one side of the first coating layer to obtain a composite material A;
Mixing and prepolymerizing the raw materials of the core layer B to obtain prepolymer, then spraying the prepolymer on one side of the composite material A, which is away from the first coating layer, and forming the core layer B on one side of the composite material A, which is away from the first coating layer;
And (3) compounding a second cladding layer on one side of the B core layer, which is away from the A core layer, so as to obtain the AB combined core.
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| CN117017626A (en) | 2023-11-10 |
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