KR20170034172A - Water repellent non-woven fabric for sanitary products and method of manufacturing the same - Google Patents
Water repellent non-woven fabric for sanitary products and method of manufacturing the same Download PDFInfo
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- KR20170034172A KR20170034172A KR1020150132530A KR20150132530A KR20170034172A KR 20170034172 A KR20170034172 A KR 20170034172A KR 1020150132530 A KR1020150132530 A KR 1020150132530A KR 20150132530 A KR20150132530 A KR 20150132530A KR 20170034172 A KR20170034172 A KR 20170034172A
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- KR
- South Korea
- Prior art keywords
- water
- water repellent
- woven fabric
- nonwoven web
- nonwoven fabric
- Prior art date
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 175
- 239000005871 repellent Substances 0.000 title claims abstract description 109
- 230000002940 repellent Effects 0.000 title claims abstract description 92
- 239000004745 nonwoven fabric Substances 0.000 title claims abstract description 70
- 238000004519 manufacturing process Methods 0.000 title abstract description 9
- 239000012188 paraffin wax Substances 0.000 claims abstract description 48
- 239000003795 chemical substances by application Substances 0.000 claims abstract description 39
- 239000011148 porous material Substances 0.000 claims abstract description 22
- 238000004080 punching Methods 0.000 claims abstract description 22
- 229920001661 Chitosan Polymers 0.000 claims abstract description 18
- BQCADISMDOOEFD-UHFFFAOYSA-N Silver Chemical compound [Ag] BQCADISMDOOEFD-UHFFFAOYSA-N 0.000 claims abstract description 18
- 238000000576 coating method Methods 0.000 claims abstract description 13
- 229940059958 centella asiatica extract Drugs 0.000 claims abstract description 11
- 125000002091 cationic group Chemical group 0.000 claims description 46
- 239000000243 solution Substances 0.000 claims description 30
- 238000000034 method Methods 0.000 claims description 17
- 239000000084 colloidal system Substances 0.000 claims description 16
- 229910052709 silver Inorganic materials 0.000 claims description 16
- 239000004332 silver Substances 0.000 claims description 16
- 238000001035 drying Methods 0.000 claims description 15
- 238000002036 drum drying Methods 0.000 claims description 11
- 238000007602 hot air drying Methods 0.000 claims description 8
- 238000005507 spraying Methods 0.000 claims description 5
- 238000002347 injection Methods 0.000 claims description 3
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- 150000001768 cations Chemical class 0.000 abstract 2
- 238000001179 sorption measurement Methods 0.000 abstract 1
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- 230000002745 absorbent Effects 0.000 description 9
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- 239000000126 substance Substances 0.000 description 5
- 238000009736 wetting Methods 0.000 description 4
- GKLLCNWAEBKYGL-UHFFFAOYSA-N Bacoside B Natural products CC(=CCC(C)(O)C1C2CCC3C(C)(CCC4C(C)(C)C(CCC34CO)OC5C(O)C(O)C(OCC6OCC(O)C(O)C6O)OC5CO)C2(C)CC1=O)C GKLLCNWAEBKYGL-UHFFFAOYSA-N 0.000 description 3
- 208000010201 Exanthema Diseases 0.000 description 3
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- LKCTWIIDXXXXAR-CYGHALRTSA-N Bacoside a Chemical compound CC(C)=CCC[C@](C)(O)[C@@H]1[C@H]2CC[C@H]3[C@@](C)(CC[C@H]4C(C)(C)C(CC[C@]34CO)O[C@@H]3O[C@H](CO)[C@@H](O[C@@H]4OC[C@H](O)[C@H](O)[C@H]4O)[C@H](O)[C@H]3O)[C@]2(C)CC1=O LKCTWIIDXXXXAR-CYGHALRTSA-N 0.000 description 2
- MWUXSHHQAYIFBG-UHFFFAOYSA-N Nitric oxide Chemical compound O=[N] MWUXSHHQAYIFBG-UHFFFAOYSA-N 0.000 description 2
- 239000004677 Nylon Substances 0.000 description 2
- 239000006096 absorbing agent Substances 0.000 description 2
- NIXOWILDQLNWCW-UHFFFAOYSA-N acrylic acid group Chemical group C(C=C)(=O)O NIXOWILDQLNWCW-UHFFFAOYSA-N 0.000 description 2
- 210000001124 body fluid Anatomy 0.000 description 2
- 239000010839 body fluid Substances 0.000 description 2
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- 229920000728 polyester Polymers 0.000 description 2
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- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- 229920003043 Cellulose fiber Polymers 0.000 description 1
- 235000008733 Citrus aurantifolia Nutrition 0.000 description 1
- 241000196324 Embryophyta Species 0.000 description 1
- 241000588747 Klebsiella pneumoniae Species 0.000 description 1
- WYQVAPGDARQUBT-FGWHUCSPSA-N Madecassol Chemical compound O([C@@H]1[C@@H](CO)O[C@H]([C@@H]([C@H]1O)O)OC[C@H]1O[C@H]([C@@H]([C@@H](O)[C@@H]1O)O)OC(=O)[C@]12CC[C@H]([C@@H]([C@H]1C=1[C@@]([C@@]3(CC[C@H]4[C@](C)(CO)[C@@H](O)[C@H](O)C[C@]4(C)[C@H]3CC=1)C)(C)CC2)C)C)[C@@H]1O[C@@H](C)[C@H](O)[C@@H](O)[C@H]1O WYQVAPGDARQUBT-FGWHUCSPSA-N 0.000 description 1
- 241001465754 Metazoa Species 0.000 description 1
- 235000011941 Tilia x europaea Nutrition 0.000 description 1
- 239000002253 acid Substances 0.000 description 1
- 230000002378 acidificating effect Effects 0.000 description 1
- 239000000654 additive Substances 0.000 description 1
- 239000000853 adhesive Substances 0.000 description 1
- 230000001070 adhesive effect Effects 0.000 description 1
- 230000000843 anti-fungal effect Effects 0.000 description 1
- 210000000709 aorta Anatomy 0.000 description 1
- WYQVAPGDARQUBT-XCWYDTOWSA-N asiaticoside Natural products O=C(O[C@H]1[C@H](O)[C@@H](O)[C@H](O)[C@@H](CO[C@H]2[C@H](O)[C@H](O)[C@H](O[C@H]3[C@H](O)[C@H](O)[C@@H](O)[C@H](C)O3)[C@@H](CO)O2)O1)[C@@]12[C@@H]([C@@H](C)[C@H](C)CC1)C=1[C@](C)([C@@]3(C)[C@@H]([C@@]4(C)[C@H]([C@@](CO)(C)[C@@H](O)[C@H](O)C4)CC3)CC=1)CC2 WYQVAPGDARQUBT-XCWYDTOWSA-N 0.000 description 1
- 229940022757 asiaticoside Drugs 0.000 description 1
- QCYLIQBVLZBPNK-UHFFFAOYSA-N asiaticoside A Natural products O1C(C(=O)C(C)C)=CC(C)C(C2(C(OC(C)=O)CC34C5)C)C1CC2(C)C3CCC(C1(C)C)C45CCC1OC1OCC(O)C(O)C1O QCYLIQBVLZBPNK-UHFFFAOYSA-N 0.000 description 1
- 230000001580 bacterial effect Effects 0.000 description 1
- 230000000903 blocking effect Effects 0.000 description 1
- 230000017531 blood circulation Effects 0.000 description 1
- 239000007853 buffer solution Substances 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 238000012258 culturing Methods 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 238000004925 denaturation Methods 0.000 description 1
- 230000036425 denaturation Effects 0.000 description 1
- 238000004332 deodorization Methods 0.000 description 1
- 230000000249 desinfective effect Effects 0.000 description 1
- 239000012153 distilled water Substances 0.000 description 1
- 239000005003 food packaging material Substances 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 230000036039 immunity Effects 0.000 description 1
- 238000011081 inoculation Methods 0.000 description 1
- 239000011810 insulating material Substances 0.000 description 1
- 238000010409 ironing Methods 0.000 description 1
- 239000004571 lime Substances 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 239000011344 liquid material Substances 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 230000014759 maintenance of location Effects 0.000 description 1
- 239000012528 membrane Substances 0.000 description 1
- 244000005700 microbiome Species 0.000 description 1
- 238000002156 mixing Methods 0.000 description 1
- 239000002121 nanofiber Substances 0.000 description 1
- 239000002105 nanoparticle Substances 0.000 description 1
- 150000002894 organic compounds Chemical class 0.000 description 1
- 239000011368 organic material Substances 0.000 description 1
- 230000035699 permeability Effects 0.000 description 1
- 230000000704 physical effect Effects 0.000 description 1
- 239000000843 powder Substances 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
- 238000005201 scrubbing Methods 0.000 description 1
- 208000017520 skin disease Diseases 0.000 description 1
- 230000036560 skin regeneration Effects 0.000 description 1
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- 231100000419 toxicity Toxicity 0.000 description 1
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- 230000029663 wound healing Effects 0.000 description 1
Classifications
-
- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06M—TREATMENT, NOT PROVIDED FOR ELSEWHERE IN CLASS D06, OF FIBRES, THREADS, YARNS, FABRICS, FEATHERS OR FIBROUS GOODS MADE FROM SUCH MATERIALS
- D06M13/00—Treating fibres, threads, yarns, fabrics or fibrous goods made from such materials, with non-macromolecular organic compounds; Such treatment combined with mechanical treatment
- D06M13/02—Treating fibres, threads, yarns, fabrics or fibrous goods made from such materials, with non-macromolecular organic compounds; Such treatment combined with mechanical treatment with hydrocarbons
-
- 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
-
- D—TEXTILES; PAPER
- D04—BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
- D04H—MAKING TEXTILE FABRICS, e.g. FROM FIBRES OR FILAMENTARY MATERIAL; FABRICS MADE BY SUCH PROCESSES OR APPARATUS, e.g. FELTS, NON-WOVEN FABRICS; COTTON-WOOL; WADDING ; NON-WOVEN FABRICS FROM STAPLE FIBRES, FILAMENTS OR YARNS, BONDED WITH AT LEAST ONE WEB-LIKE MATERIAL DURING THEIR CONSOLIDATION
- D04H1/00—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres
- D04H1/40—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties
- D04H1/44—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties the fleeces or layers being consolidated by mechanical means, e.g. by rolling
- D04H1/46—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties the fleeces or layers being consolidated by mechanical means, e.g. by rolling by needling or like operations to cause entanglement of fibres
- D04H1/492—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties the fleeces or layers being consolidated by mechanical means, e.g. by rolling by needling or like operations to cause entanglement of fibres by fluid jet
-
- D—TEXTILES; PAPER
- D04—BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
- D04H—MAKING TEXTILE FABRICS, e.g. FROM FIBRES OR FILAMENTARY MATERIAL; FABRICS MADE BY SUCH PROCESSES OR APPARATUS, e.g. FELTS, NON-WOVEN FABRICS; COTTON-WOOL; WADDING ; NON-WOVEN FABRICS FROM STAPLE FIBRES, FILAMENTS OR YARNS, BONDED WITH AT LEAST ONE WEB-LIKE MATERIAL DURING THEIR CONSOLIDATION
- D04H13/00—Other non-woven fabrics
-
- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06B—TREATING TEXTILE MATERIALS USING LIQUIDS, GASES OR VAPOURS
- D06B1/00—Applying liquids, gases or vapours onto textile materials to effect treatment, e.g. washing, dyeing, bleaching, sizing or impregnating
- D06B1/02—Applying liquids, gases or vapours onto textile materials to effect treatment, e.g. washing, dyeing, bleaching, sizing or impregnating by spraying or projecting
-
- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06C—FINISHING, DRESSING, TENTERING OR STRETCHING TEXTILE FABRICS
- D06C3/00—Stretching, tentering or spreading textile fabrics; Producing elasticity in textile fabrics
-
- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06C—FINISHING, DRESSING, TENTERING OR STRETCHING TEXTILE FABRICS
- D06C7/00—Heating or cooling textile fabrics
-
- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06M—TREATMENT, NOT PROVIDED FOR ELSEWHERE IN CLASS D06, OF FIBRES, THREADS, YARNS, FABRICS, FEATHERS OR FIBROUS GOODS MADE FROM SUCH MATERIALS
- D06M11/00—Treating fibres, threads, yarns, fabrics or fibrous goods made from such materials, with inorganic substances or complexes thereof; Such treatment combined with mechanical treatment, e.g. mercerising
- D06M11/32—Treating fibres, threads, yarns, fabrics or fibrous goods made from such materials, with inorganic substances or complexes thereof; Such treatment combined with mechanical treatment, e.g. mercerising with oxygen, ozone, ozonides, oxides, hydroxides or percompounds; Salts derived from anions with an amphoteric element-oxygen bond
- D06M11/36—Treating fibres, threads, yarns, fabrics or fibrous goods made from such materials, with inorganic substances or complexes thereof; Such treatment combined with mechanical treatment, e.g. mercerising with oxygen, ozone, ozonides, oxides, hydroxides or percompounds; Salts derived from anions with an amphoteric element-oxygen bond with oxides, hydroxides or mixed oxides; with salts derived from anions with an amphoteric element-oxygen bond
- D06M11/38—Oxides or hydroxides of elements of Groups 1 or 11 of the Periodic Table
- D06M11/42—Oxides or hydroxides of copper, silver or gold
-
- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06M—TREATMENT, NOT PROVIDED FOR ELSEWHERE IN CLASS D06, OF FIBRES, THREADS, YARNS, FABRICS, FEATHERS OR FIBROUS GOODS MADE FROM SUCH MATERIALS
- D06M14/00—Graft polymerisation of monomers containing carbon-to-carbon unsaturated bonds on to fibres, threads, yarns, fabrics, or fibrous goods made from such materials
- D06M14/02—Graft polymerisation of monomers containing carbon-to-carbon unsaturated bonds on to fibres, threads, yarns, fabrics, or fibrous goods made from such materials on to materials of natural origin
- D06M14/04—Graft polymerisation of monomers containing carbon-to-carbon unsaturated bonds on to fibres, threads, yarns, fabrics, or fibrous goods made from such materials on to materials of natural origin of vegetal origin, e.g. cellulose or derivatives thereof
-
- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06M—TREATMENT, NOT PROVIDED FOR ELSEWHERE IN CLASS D06, OF FIBRES, THREADS, YARNS, FABRICS, FEATHERS OR FIBROUS GOODS MADE FROM SUCH MATERIALS
- D06M15/00—Treating fibres, threads, yarns, fabrics, or fibrous goods made from such materials, with macromolecular compounds; Such treatment combined with mechanical treatment
- D06M15/01—Treating fibres, threads, yarns, fabrics, or fibrous goods made from such materials, with macromolecular compounds; Such treatment combined with mechanical treatment with natural macromolecular compounds or derivatives thereof
- D06M15/03—Polysaccharides or derivatives thereof
Landscapes
- Engineering & Computer Science (AREA)
- Textile Engineering (AREA)
- Health & Medical Sciences (AREA)
- Heart & Thoracic Surgery (AREA)
- Epidemiology (AREA)
- Biomedical Technology (AREA)
- Mechanical Engineering (AREA)
- Vascular Medicine (AREA)
- Life Sciences & Earth Sciences (AREA)
- Animal Behavior & Ethology (AREA)
- General Health & Medical Sciences (AREA)
- Public Health (AREA)
- Veterinary Medicine (AREA)
- Treatments For Attaching Organic Compounds To Fibrous Goods (AREA)
- Absorbent Articles And Supports Therefor (AREA)
Abstract
Description
The present invention relates to a water-repellent nonwoven fabric for sanitary articles and a method of producing the same, and more particularly, to a water-repellent nonwoven fabric which can be used as a topsheet layer in an absorbent article such as sanitary goods by applying a cationic paraffin- will be.
Nonwoven fabrics are fabrics developed as a substitute for fabrics and knitted fabrics, which means a web of fibers in which the fibers are bonded together by chemical or mechanical means through appropriate moisture and heat treatment.
These nonwoven fabrics are less expensive than fabric or knitted fabric and have excellent air permeability, flexibility and light weight, so that they can be used for clothing such as lining materials, wallpaper, heat insulating materials, tablecloths, shoes, food packaging materials, filters and sanitary articles such as diapers, It can be used in various materials.
Particularly, when the nonwoven fabric is used as a topsheet layer covering the absorbent layer of the sanitary article, the water content of the topsheet, which directly contacts the skin even after the liquid secretions such as body fluids are absorbed into the absorbent layer, Therefore, in order to enhance the feeling of use of the sanitary article and prevent the liquid secretion transferred to the absorbent layer from flowing back to the topsheet layer, a method for enhancing the water repellency of the nonwoven fabric used for the topsheet layer should be considered.
In order to enhance the water repellency of the nonwoven fabric, Japanese Unexamined Patent Application Publication No. 2006-0022406 (published March 10, 2006) discloses a method of producing a nanofiber nonwoven fabric excellent in water repellency by using a fluorinated water repellent agent, Is very excellent, but it may be harmful to the human body depending on the molecular number of carbon, so that there is still a problem that is limited in application to sanitary articles.
SUMMARY OF THE INVENTION The object of the present invention is to solve the problems of the prior art, and it is a technical feature to use a cationic paraffin water repellent agent which is harmless to the human body in order to improve the water repellency of a nonwoven fabric used as a top sheet layer of sanitary articles .
Particularly, the nonwoven fabric forms a plurality of porous structures to induce absorption of secretions into the absorbent layer, which is characterized in that the porous structure of the nonwoven fabric can be maintained even when a cationic paraffin water repellent is applied, and a water repellent non- ≪ / RTI >
In order to solve the problems of the prior art and solve the above problems, the water repellent nonwoven fabric for sanitary articles of the present invention comprises a porous nonwoven web, and a cationic paraffin water repellent agent is applied to the surface of the porous nonwoven web do.
At this time, at least a part of the pores existing in the porous nonwoven web are not filled with pores by the application of the cationic paraffin water repellent agent, and the porous structure is maintained. The pH of the cationic paraffin water repellent agent is 4.5 to 7.5 It is preferably slightly acid to neutral, and the density is preferably about 1.05 g / cm < 3 >.
A method of manufacturing a water repellent nonwoven fabric for sanitary articles according to another embodiment of the present invention includes: a water punching step of forming a nonwoven web by spraying high pressure water onto nonwoven fabric fibers; Drying the nonwoven web through the water punching step; Applying a cationic paraffinic water repellent solution to the nonwoven web that has undergone the primary drum drying step; Drying the nonwoven web by hot air drying the cationic paraffin water repellent solution; And a second drum-drying step of drying the non-woven web through the hot air drying step, wherein the water punching step includes a first jetting step in which the pressure of the jet water stream is 10 to 150 bar, And a secondary injection step of 100 bar.
Alternatively, the method may further include immersing the nonwoven fabric in a solution containing chitosan, silver nano colloid or centella asiatica extract before the water punching step.
The cationic paraffin water repellent is preferably used in an amount of 2 to 10% by weight based on the unit weight of the nonwoven web. The cationic paraffin water repellent solution is preferably applied by a nozzle coating method or a drum coating method.
In the nozzle coating method, the distance between the nozzle and the nonwoven web may be 1 to 2 m, and the drums used in the drum coating method may be arranged such that a plurality of holes having a diameter of 2 to 4 mm are arranged at intervals of 8 to 12 mm .
Since the water repellent nonwoven fabric for sanitary article of the present invention is manufactured by water punching method, it has a plurality of porous structures and can apply a cationic paraffin water repellent agent to exhibit an excellent water repellent effect while being harmless to the human body.
On the other hand, since the cationic paraffin water-repellent agent is prepared as a solution and then applied by a nozzle or a drum coating method, the cationic paraffin water-repellent agent can be uniformly applied to the nonwoven fabric and the porous structure of the water repellent nonwoven fabric can be maintained by preventing pores. Therefore, when the water-repellent nonwoven fabric is used as a topsheet of a sanitary article, most liquid secretions can easily escape to the absorbent layer through the pores and prevent the liquid secretion transferred to the absorbent layer from flowing back to the topsheet layer. The effect can be further improved.
Also, when the water repellent nonwoven fabric is manufactured, the antibacterial property can be increased by immersing the nonwoven fabric in a solution containing chitosan, silver nano colloid or Centella asiatica extract, and the skin rash can be reduced or reduced.
Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the drawings. Prior to the description, terms and words used in the present specification and claims should not be construed as limited to ordinary or dictionary meanings and should be construed in accordance with the technical concept of the present invention.
Throughout this specification, when an element is referred to as "including" an element, it is understood that it may include other elements as well, without departing from the other elements unless specifically stated otherwise. Also, when a component is referred to as being "made" with respect to any component, it means that it does not include other components, aside from the other components, unless specifically stated otherwise.
Each step may be performed differently than the order specified unless explicitly stated in the context of the specific order. That is, each of the steps may be performed in the same order as described, or may be performed substantially concurrently or in the reverse order.
In order to solve the above-mentioned problems of the prior art and to achieve the object of the invention to be solved by the present invention, the present invention provides a porous nonwoven web, And a water-repellent nonwoven fabric for a sanitary article coated with a cationic paraffin water-repellent agent on the surface of the porous nonwoven web. In the present invention, the water-repellent nonwoven fabric is preferably used as a topsheet of sanitary articles, A mask, a sanitary napkin, or a padding pad.
The topsheet layer is laminated on top of the absorbent layer of the sanitary article and directly contacts the skin. In order to reduce the skin rash caused by moisture, chemical substances and microorganisms caused by liquid secretions such as body fluids and to maintain the comfort, It is important to pass quickly. To this end, it is preferable to apply a cationic paraffin water repellent agent to enhance water repellency, and maintain the porous structure even after the water repellent agent is applied, so that the liquid secretion can escape through the pores to the absorbent layer.
The cationic paraffin water-repellent agent is preferably in the range of pH 4.5 to 7.5, which is slightly acidic or neutral, and preferably has a density of about 1.05 g / cm 3. When the pH is less than 4.5, the water repellent activity is lowered and the water repellent effect is remarkably lowered. When the pH is more than 7.5, the fiber rings or molecular rings in the fibers are easily broken, In the strong base atmosphere, the nucleophilic electron substitution reaction or the nucleophilic moiety in the fiber molecule may increase the reaction rate, so that the covalent bonding between the ionized cellulose fiber organic material and the water repellent agent is excessively accelerated, And the liquid component to be absorbed is passed through the water repellent nonwoven fabric of the present invention, It may interfere with absorption by the absorber.
The water repellent agent is a hydrophobic substance used on the surface of the fabric and functions to prevent the fabric from being wetted with water. When the water repellent agent is applied to the fabric, the water repellent agent is only adhered to the surface of the fabric in a thinly- The gas such as air or water vapor can pass freely. Therefore, even if the water repellency is strong, the water penetrates into the fiber when the water is pressurized. The amount of water to be infiltrated changes depending on the degree of water repellency.
Therefore, when the water repellent nonwoven fabric of the present invention is applied to the topsheet of the sanitary article, the water repellency of the cationic paraffin water repellent agent is controlled to flow through the pores of the water repellent nonwoven fabric, and the remaining secretions can be absorbed in the topsheet layer, It is possible to prevent skin rash and the like, and to improve the feeling of use and comfort.
When applying the cationic paraffin water repellent agent, the water repellent agent is dissolved in purified water to prepare a solution, which is then used. The amount of the water repellent agent used to control the water repellency can be controlled. The cationic paraffin water repellent is preferably used in an amount of 2 to 10 wt% based on the unit weight of the nonwoven web fabric to be coated. If the water repellent agent is less than 2 wt%, water repellency is poor. If the water repellent agent is more than 10 wt% It is difficult not only to absorb the secretion but also to fill the pores of the porous nonwoven web and to maintain the porous structure.
Another embodiment of the present invention relates to a method of manufacturing a water repellent nonwoven fabric for sanitary articles, comprising: a water punching step of forming a nonwoven web by spraying high pressure water onto nonwoven fabric fibers and pressing them; Drying the nonwoven web through the water punching step; Applying a cationic paraffinic water repellent solution to the nonwoven web that has undergone the primary drum drying step; Drying the nonwoven web by hot air drying the cationic paraffin water repellent solution; And drying the nonwoven web through the hot air drying step.
The nonwoven fabric is preferably hydrophobic fiber having high water repellency such as acrylic, nylon, polyester or polypropylene. The degree of water repellency of the fiber can be found by the contact angle (?) Between water and the fiber when water is dropped on the surface of the fiber. The higher the water repellency, the higher the contact angle. The contact angles of the acrylic, nylon, polyester and polypropylene are 53 °, 64 °, 67 ° and 90 °, respectively, and the water repellency of polypropylene is the most excellent. Therefore, polypropylene is most preferable as the nonwoven fabric.
Nonwoven webs are formed by water-punching the nonwoven webs. High-pressure water can be continuously passed through the fiber layer to form a sheet, increasing the density of each fiber within the fiber layer and the bonding force between the fibers.
At this time, in order to maximize the initial bonding effect between the nonwoven fabrics and to minimize the change in physical properties of the finished nonwoven fabric, the water punching is performed at a pressure of 10 to 150 bar (about 1 to 15 MPa) It is preferable to include a spraying step and a secondary spraying step of 10 to 100 bar (about 1 to 10 MPa).
Further, by adjusting the number of water punching, the strength of the fiber layer is increased, and the punched fiber sheet forms a nonwoven web having an equally spaced porous structure. The pores formed in the nonwoven web may be in the form of a quadrangle, rhombus, or circle, depending on the texture of the belt that is pumped out of the high pressure water during water punching. The preferred form of the pores is circular, and the liquid secretions can most effectively pass through when the pores are circular with a diameter of 0.5 to 1 mm.
When the diameter exceeds 1 mm, the liquid secretion absorbed into the absorber through the pores of the water-repellent nonwoven fabric may again be calculated and flow out to the outside of the water-repellent nonwoven fabric, The comfort can be reduced. On the other hand, when the diameter is less than 0.5 mm, When the water-repellent nonwoven fabric is used as the top sheet of various sanitary products, there is a problem that the liquid material to be absorbed can not sufficiently pass through the pores, which is not preferable.
Such a water punching method is characterized by the use of only water to complete the bonding of fibers without using any organic compound including conventional chemical adhesives or chemical additives, which is a very environmentally friendly manufacturing method.
The nonwoven fabric manufactured by such a method has advantages of having a soft touch feeling and excellent absorbency, and at the same time, it has an excellent scrubbing property. Since water used for water punching uses purified water, the sanitary stability is excellent, .
It is preferable that the nonwoven fabric is immersed in a solution containing chitosan, silver nano colloid or Centella asiatica extract before water-punching the nonwoven fabric to form a nonwoven web to impart antimicrobial and skin-affinity.
Chitosan is safe because it shows excellent biocompatibility in tissues of human, animal, plant, and body and is easily decomposed to be environment-friendly, has little toxicity, and has excellent formability such as powder, fiber, membrane, sponge- Moisture retention, deodorization, antimicrobial activity, antifungal activity and the like.
The silver nano-colloid is nano-silver in the form of nanoparticles, maximizing the original strong antibacterial and disinfecting power, harmless to human body. Especially when used with chitosan.
Centella Asiatica is a perennial herb that has indocentelloside, brahmoside, brahminoside, ASIATICOSIDE, thankuniside and isothankuniside. Important components are Bacoside A and B, and in the case of Bacoside A, it plays a role in relieving the tension of the aorta through the release of nitric oxide and facilitates blood circulation. Centella asiatica is also known to enhance immunity, increase vitality, and is effective in various skin disorders and wound healing.
It is preferable that the above solution contains a mixture of chitosan, silver nano colloid and Centella asiatica extract in purified water, more preferably 100 g of the mixture per 1000 ml of purified water.
Preferably, the mixture contains 20 to 50 parts by weight of silver nanocolloid and 5 to 9 parts by weight of Centella asiatica per 100 parts by weight of chitosan. When the silver nano-colloid is contained in an amount of 20 parts by weight or more, the antibacterial property is increased. When the amount of the nano-colloid is more than 50 parts by weight, the nano-colloid is excessively adhered to the pores of the fibers and the pores of the nonwoven fabric, .
In addition, when 5 parts by weight or more of Centella asiatica is contained, antimicrobial activity and skin regeneration effect are exhibited. From 9 parts by weight or more, the above effect is not increased economically.
The nonwoven web prepared by water punching is preferably subjected to primary drum drying at 80 to 130 캜, followed by application of a cationic paraffin water repellent solution. When the cationic paraffin water repellent solution is applied without drying the nonwoven web, the water repellent solution may not be sufficiently applied to the fabric due to the water film, which is not preferable. If the drying temperature of the primary drum is less than 80 캜, the drying is insufficient and the water film remains on the surface of the nonwoven fabric fabric, and the water repellent component, which will be described later, is not absorbed. There is a problem that the nonwoven fabric is rather hardened and the feeling of wearing is deteriorated.
When the nonwoven web is sufficiently dried, the cationic paraffin water repellent solution is applied using a nozzle or a drum. In the nozzle coating method, the cationic paraffin water repellent solution is applied by using a nozzle, so that the water repellent solution can be uniformly applied when the distance between the nozzle and the nonwoven web is 1 to 1.5 m, Is preferably in the range of 0.05 to 0.2 mm.
The drum coating method uses a drum in which a plurality of cation-type paraffin water-repellent agents are arranged at intervals of 8 to 12 mm in diameter with 2 to 4 mm holes, and the nonwoven fabric is transferred between the rotating upper drum and the lower drum. When the diameter of the drum is less than 2 mm, the width of the hole is too small to easily spray the cationic paraffin water repellent agent, and when the diameter exceeds 4 mm, the cationic paraffin water repellent agent is excessively sprayed and uniform coating is difficult .
The nonwoven web to which the paraffin water repellent agent is applied is desirably subjected to hot air drying at 80 to 130 ° C to sufficiently dry the water repellent agent, followed by second drum drying. Drying of the secondary drum is preferably carried out at a temperature of 80 to 130 ° C as in the case of drying the primary drum. This secondary drum drying is a method for ironing the surface and preventing fluff of the nonwoven web to improve the feeling of use. , The paraffin is weak against heat, so it is undesirable that the paraffin is directly contacted with a high-temperature drum, which may cause denaturation. Also, it is preferable that the hot air drying and the secondary drum drying are performed in a temperature range not exceeding 130 ° C. As described above in the first drum drying step, there is a problem that the nonwoven web becomes too hard Because it causes.
Hereinafter, the technical features of the present invention will be described in detail with reference to embodiments and drawings. It will be understood by those skilled in the art that various changes in form and details may be made therein without departing from the spirit and scope of the invention as defined by the appended claims and their equivalents. shall.
[ Manufacturing example One]
Porosity for sanitary goods Water repellent Manufacturing method of nonwoven fabric
The polypropylene fibers were water punched to form a porous nonwoven web. The water punching included a primary jetting step with a jet water pressure of 100 bar and a secondary jetting step with a jet water pressure of 50 bar.
The nonwoven web formed by water punching was subjected to primary drum drying at 100 ° C. After completely drying, Repellent T (Dong lime chemicals Co., LTD), a cationic paraffin water repellent, was mixed with purified water, And uniformly applied to the web. More specifically, after positioning a nonwoven web between an upper drum and a lower drum, a plurality of holes (holes having a diameter of 3 mm formed at intervals of 10 mm) formed on the drum move each of the drums while rotating the nonwoven web The water repellent solution was applied.
The cationic paraffin water repellent solution was applied and then completely dried by hot air drying at 90 ° C, followed by secondary drum drying at 100 ° C.
[ Example One]
Cationic system According to the concentration of the paraffin water repellent solution, Water repellency And porosity maintenance evaluation
The water repellent nonwoven fabric was prepared by applying a cationic paraffin water repellent solution having the composition shown in Table 1 below in order to examine the water repellency and the porosity of the nonwoven fabric according to the concentration of the cationic paraffin water repellent solution. 1. The water content was evaluated according to KS K 0590 (water repellency test method of fabric), and the presence of clogging of pores was observed with a microscope.
KS K0590 is a test to evaluate the resistance of a fabric to wetting by dropping water droplets on the surface of a water-repellent fabric. After the surface of each nonwoven fabric was pulled and fixed so as to be 45 ° with respect to the horizontal, distilled water was sprayed on the surface of the nonwoven fabric at a height of 150 mm for 30 seconds by using an injector having 19 holes each having a diameter of 0.9 mm, Residual moisture was removed and evaluated for visibility by visual comparison with standard standards.
(weight%)
(* Based on the score of the water capital,
Water repellency 100: No adhesion to the surface or wetting
Water repellency 90: indicating slight adhesion or wetting on the surface
Water repellency 80: Water showing wetness at a place away from water
Water repellency 70: Partial wetting over the entire surface
Water repellency 60: surface wetted completely)
According to Table 1, the water content of the cationic paraffin-based water repellent solution was higher than 2 wt%, and the water content was 10 wt% and 11 wt%, respectively. However, when the concentration of the water repellent agent solution is 11 wt%, it is not preferable because the pores of the nonwoven fabric are blocked.
[ Example 2]
Evaluation of antibacterial property of nonwoven fabric
In order to examine the antimicrobial activity of chitosan, silver nano-colloid and Centella asiatica extract, a mixture having the composition shown in Table 2 below was prepared. Then, the polypropylene fiber was immersed in a solution prepared by mixing 100 g of the mixture with 1000 ml of purified water, 1, a water repellent nonwoven fabric was produced.
The water repellent nonwoven fabric thus prepared was subjected to an antibacterial test using KS K0693 (test method for the antibacterial property of fabric). In this test, Klebsiella pneumoniae (ATCC 4352), a gram-negative organism, was inoculated as a live strain. The strain used at this time had an activity of culturing the strain at least 31.6 times for 18 hours.
The percentage of microbial reduction (%) by the above test was calculated by dividing the number of viable cells (M b ) after 18 hours from the inoculation of the control solution into the control group 1 which was not subjected to the antimicrobial treatment, the test groups 1 to 6 and the control groups 2 to 6 Can be calculated by the following formula (1) using the viable cell count (M c ) after 18 hours.
The microbial reduction rate according to the composition of the mixture was evaluated using the equation (1) as shown in Table 2 below.
Colloid (g)
According to the above Table 2, the antimicrobial activity was also observed in the case of using chitosan alone (control group 2), but the antimicrobial activity was greatly increased when the chitosan contained 20 parts by weight or more of silver nano-colloid in 100 parts by weight of chitosan (test group 1). The antibacterial activity was increased as silver nano colloid was abundantly contained. However, in the case of containing more than 50 parts by weight (control group 4), there was a problem of blocking the pores of the water repellent nonwoven fabric.
Control group 5 was a mixture containing 100 parts by weight of chitosan and 40 parts by weight of silver nano-colloid and 4 parts by weight of Centella asiatica extract. Test group 3 (100 parts by weight of chitosan and 40 parts by weight of silver nano-colloid) There was no significant difference in antibacterial activity. However, in the test groups 4 to 6 in which the extract of Centella asiatica was contained in an amount of 5 parts by weight or more, the antimicrobial activity was increased as the content of the extract was increased. In the control group 6 containing the centella asiatica extract in an amount of 10 parts by weight or more, No longer appeared.
[ Example 3]
Evaluation of strength of nonwoven fabric
In order to examine the water repellency and the strength change of the nonwoven fabric of the cationic paraffin water repellent agent according to the pH change, the pH of the cationic paraffin water repellent agent (the amount of which was fixed to 6 wt%) was changed using a buffer solution as shown in Table 3 And the water repellent nonwoven fabric was produced. The manufacturing method of the water repellent nonwoven fabric was the same as that of the above-mentioned Production Example 1. The water repellency was measured in the same manner as in Example 1, and the tensile strength was measured by the method specified in KS K 0521.
According to the above Table 3, when the pH of the cationic paraffin water-repellent was 4 or less, the water-repellency was not sufficient, and when the pH was 8 or more, the tensile strength was abruptly decreased.
The results of Examples 1 to 3 above show that the cationic paraffin water repellent agent capable of imparting water repellency to the porous water repellent nonwoven web of the present invention is at least 2% by weight, and when it is 11% by weight, it is difficult to maintain the porous structure of the nonwoven web , It was confirmed that the most preferable amount of the cationic paraffin water repellent solution was 2 to 10% by weight.
In addition, chitosan, silver nano-colloid or Centella asiatica extract may be included as a mixture for imparting antibacterial properties to the porous water-repellent nonwoven fabric web of the present invention. In the case of 100 parts by weight of chitosan, 20 parts by weight or more of silver nano- It was confirmed that the antibacterial activity was high and the porosity of the water repellent nonwoven fabric of the present invention was maintained when it contained 5 parts by weight or more and 9 parts by weight or less of the extract of Telia asiatica and that the cationic paraffinic water repellent agent was used in the range of pH 4.5 to 7.5 .
Claims (10)
Wherein the porous nonwoven web is coated with a cationic paraffin water repellent agent on the surface of the porous nonwoven web.
Wherein at least a part of the pores existing in the porous nonwoven web are not filled with pores by the application of the cationic paraffin water repellent agent to maintain the porous structure.
Wherein the cationic paraffinic water-repellent agent has a pH of 4.5 to 7.5 and a density of about 1.05 g / cm 3.
Drying the nonwoven web through the water punching step;
Applying a cationic paraffinic water repellent solution to the nonwoven web that has undergone the primary drum drying step;
Drying the nonwoven web through the application of the cationic paraffin water repellent; And
And drying the non-woven web through the hot-air drying step.
Wherein the water punching step comprises a primary injection step with a jet water pressure of 10 to 150 bar and a secondary injection step with a jet water pressure of 10 to 100 bar .
Further comprising the step of immersing the nonwoven fabric in a solution containing chitosan, silver nano colloid or centella asiatica extract before the water punching step.
Wherein the cationic paraffin water repellent agent is used in an amount of 2 to 10% by weight based on the weight of the nonwoven fabric unit.
Wherein the step of applying the cationic paraffin water repellent solution is carried out by a nozzle coating method or a drum coating method.
In the nozzle coating method, the distance between the nozzle and the nonwoven web is 1 to 1.5 m.
Wherein the drums used in the drum coating method have a plurality of holes having a diameter of 2 to 4 mm arranged at intervals of 8 to 12 mm.
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| KR102459988B1 (en) * | 2021-11-30 | 2022-10-31 | 주식회사 퀸비스토어 | Hygiene product with antibiosis and manufacturing method thereof |
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| KR102459988B1 (en) * | 2021-11-30 | 2022-10-31 | 주식회사 퀸비스토어 | Hygiene product with antibiosis and manufacturing method thereof |
| CN114304782A (en) * | 2021-12-30 | 2022-04-12 | 北京华熙海御科技有限公司 | Mask |
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