CN101267847B - Superabsorbents, nanofibre webs finished therewith, and use thereof - Google Patents
Superabsorbents, nanofibre webs finished therewith, and use thereof Download PDFInfo
- Publication number
- CN101267847B CN101267847B CN2005800516048A CN200580051604A CN101267847B CN 101267847 B CN101267847 B CN 101267847B CN 2005800516048 A CN2005800516048 A CN 2005800516048A CN 200580051604 A CN200580051604 A CN 200580051604A CN 101267847 B CN101267847 B CN 101267847B
- Authority
- CN
- China
- Prior art keywords
- purposes
- nano fabrics
- nano
- superabsorbents
- fabrics
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
Classifications
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J3/00—Processes of treating or compounding macromolecular substances
- C08J3/12—Powdering or granulating
-
- 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
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61L—METHODS OR APPARATUS FOR STERILISING MATERIALS OR OBJECTS IN GENERAL; DISINFECTION, STERILISATION OR DEODORISATION OF AIR; CHEMICAL ASPECTS OF BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES; MATERIALS FOR BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES
- A61L15/00—Chemical aspects of, or use of materials for, bandages, dressings or absorbent pads
- A61L15/16—Bandages, dressings or absorbent pads for physiological fluids such as urine or blood, e.g. sanitary towels, tampons
- A61L15/42—Use of materials characterised by their function or physical properties
- A61L15/60—Liquid-swellable gel-forming materials, e.g. super-absorbents
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J20/00—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof
- B01J20/22—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof comprising organic material
- B01J20/26—Synthetic macromolecular compounds
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J20/00—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof
- B01J20/22—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof comprising organic material
- B01J20/26—Synthetic macromolecular compounds
- B01J20/265—Synthetic macromolecular compounds modified or post-treated polymers
- B01J20/267—Cross-linked polymers
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J20/00—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof
- B01J20/30—Processes for preparing, regenerating, or reactivating
- B01J20/32—Impregnating or coating ; Solid sorbent compositions obtained from processes involving impregnating or coating
- B01J20/3291—Characterised by the shape of the carrier, the coating or the obtained coated product
- B01J20/3293—Coatings on a core, the core being particle or fiber shaped, e.g. encapsulated particles, coated fibers
-
- 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
- A61F2013/530481—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 superabsorbent materials, i.e. highly absorbent polymer gel materials
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J2220/00—Aspects relating to sorbent materials
- B01J2220/50—Aspects relating to the use of sorbent or filter aid materials
- B01J2220/68—Superabsorbents
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J2300/00—Characterised by the use of unspecified polymers
- C08J2300/14—Water soluble or water swellable polymers, e.g. aqueous gels
Landscapes
- Chemical & Material Sciences (AREA)
- Health & Medical Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Organic Chemistry (AREA)
- Analytical Chemistry (AREA)
- Epidemiology (AREA)
- Engineering & Computer Science (AREA)
- Life Sciences & Earth Sciences (AREA)
- Animal Behavior & Ethology (AREA)
- General Health & Medical Sciences (AREA)
- Public Health (AREA)
- Veterinary Medicine (AREA)
- Dispersion Chemistry (AREA)
- Hematology (AREA)
- Materials Engineering (AREA)
- Vascular Medicine (AREA)
- Heart & Thoracic Surgery (AREA)
- Biomedical Technology (AREA)
- Medicinal Chemistry (AREA)
- Polymers & Plastics (AREA)
- Absorbent Articles And Supports Therefor (AREA)
- Nonwoven Fabrics (AREA)
- Orthopedics, Nursing, And Contraception (AREA)
- Artificial Filaments (AREA)
Abstract
The invention concerns a superabsorbent powder that consists of polymeric particles comprising a core that swells in the presence of water and a surficially postcrosslinked shell and which is a screened fraction of such polymeric particles that have not been comminuted after the surficial postcrosslinking of their shell. This superabsorbent powder is particularly useful for finishing textile fabrics composed of very fine fibres or filaments less than 10 [mu]m in diameter, in particular for finishing hygiene products.; It further proposes the use of a nanofibre web finished with superabsorbents for absorbing and retaining hydrophilic fluids, for uptake and/or retarded delivery of at least one of the following fluids: body fluids, perspiration from humans and other animals, water, including cooling water, condensation and water vapour, chemical, including agrochemicals and pesticides, medicaments, biocides, germicides and fungicides, diagnosticals, fire protection and fire extinguishing agents, cleaning agents, hydraulic fluids, heating and cooling fluids, wastewaters, including radioactively contaminated fluids, perfumeries.
Description
The present invention relates to the superabsorbents powder that a kind of polymer particles by having shell crosslinked behind the core that expands under the water existence and surface forms, it is used for the purposes of the textile that configuration makes less than superfine fibre or the ultrafine filament of 10 μ m by diameter, and with described absorption and the nano fabrics that keeps the superabsorbents configuration of hydrophilic fluid, is used for absorption and/or discharges the purposes of one or more fluids or fluid mixture.
" superabsorbents " refers to absorb water or other fluid until the polymeric material of thousand times of its quality, and this superabsorbents expands because forming gel.Because absorption and the reserve capability of this superabsorbents is subject to " gel stops " effect fast consumingly, the superabsorbents microgranule caking of rising or expansion, thereby proposed to make the superabsorbents microgranule to carry out crosslinked several different methods behind surface, these methods cause the degree of cross linking of microgranule to have from inside to outside the gradient that raises, and namely form less crosslinked core and than the shell of strong cross-linking.Superabsorbents of these modifications and preparation method thereof is by U11manns Encyclopedia of Industrial Chemistry, the 6th edition, the 35th volume, from 73 pages, 2003 is disclosed, equally also disclose it and be used for the purposes that configures to hygienic articles, hygienic articles refers to diaper and other incontinence product, sanitary pad and wound binder.
According to research in West Europe approximately 1,500 ten thousand and the people of the roughly the same number of the U.S., suffer from urinary incontinence.This healthy occurring in the women than Duo 10 times in the male of harming.The approximately temporary at least incontinence of women in 25% age 30-59 year.But also relate to the young woman of 10-20% age about 20 years old.In West Europe, annual consumption surpasses 5,200,000,000 incontinence products, for example adult diapers.In the U.S., the annual expenditure that is used for incontinence product is estimated to surpass 16,400,000,000 dollars, wherein approximately 35% occurs in beadhouse.The superabsorbents that exploitation is improved has larger society and economic implications, and described superabsorbents is particularly suitable for the textile that such incontinence product is used, and major part is fabric.
The top priority of incontinence product is to absorb urine, firmly absorbs and effectively constraint.Should prevent the skin of getting wet this moment, and suppress to form abnormal smells from the patient.As the outside barrier of liquid, therefore different fibre object has realized the control liquid distribution, and superabsorbents is guaranteed Liquid Absorption by multi-layer film structure.
Except these technical functions, certain snugness of fit, good combining form, secret (marketing channel, volume, rustle/rustle sound) and the operability of health are also desirable.
Incontinence product can make a small amount of relevant personnel cross life as far as possible normally now.Yet mobility is restricted, and the restriction reside in have health infrastructure around, it especially also affects society and employment status.
Especially there will be these impacts in more serious incontinence situation, although, because with the material and design of present incontinence product, can overcome described technical problem,, at snugness of fit, be fit to form, secret and operating aspect have burden.
Because incontinence is the social theme of abstaining from, therefore the described healthy social mentality's composition that harms especially has special meaning to the young woman, and this finally can cause isolating, lonely and lose self-confident and autonomous.
This paper can help to be provided for the new material of novel incontinence product, and this especially considers the needs to secret (by smaller size smaller, less thickness, the less sound and higher snugness of fit).
United States Patent (USP) 5629377 is open, and the superabsorbents powder that is made by polymer particles crosslinked behind surface is used for configuration diaper and other incontinence product.But the fact shows, with the available superabsorbents powder of business of superfine fibre fabric (for making the former of the dry as far as possible skin surface of user thereby preferred these products) combination be not still best.They can not be processed without problems, can not be strapped in fiber net structure faultlessly, and flow out from fiber net structure when moistening.
" nano fabrics " refer to by diameter less than 10 μ m, the fleece that preferably less than the fabric fibre of 1 μ m, makes.Nano fabrics and preparation method thereof is for example by United States Patent (USP) 4,043,331 and International Patent Application WO 01/27365 disclosed.Although the nano fabrics known by described prior art do not configure with superabsorbents, their itself are used for configuration hygienic articles and wound binder.
Task of the present invention is, a kind of superabsorbents powder that is particularly suitable for the superfine fibre fabric combination is provided, they the configuration textile for example the application aspect hygienic articles cause more economical preparation probability, and provide the application possibility that is configured to absorb and keep the superfine fibre fabric of hydrophilic fluid with this superabsorbents, in the case, the favourable character of fabric on economics, ecology or technical standpoint of configuration is obvious especially like this.
According to the present invention, for the beginning described type the superabsorbents powder, this task be achieved in that be described powder be the sort of crosslinked behind surface after its shell the fragmentation the polymer particles sieve fraction.
Show surprisingly now, even it has best granularity and suitable particle size distribution to the superfine fibre netting gear of determining traditional superabsorbents powder, also not all right, because in its preparation process, even also broken again and again after crosslinked thereafter, thereby the core/shell structure of infringement microgranule, and restart the gel blocking effect.Therefore can not reach best water to the superfine fibre fabric and absorb and the water retention, although for " normally " or thicker fabric, with identical traditional superabsorbents powder, can realize the result that is suitable for.That only ought carefully sieve, not broken microgranule is as the superabsorbents powder, and while with the superfine fibre fabric combination, using, could regulate desirable best water absorption value and water retention.But this is not only applicable to absorb and keep water, and is applicable to absorb and keep other hydrophilic fluid.
If the particle size distribution of the sieve fraction of using, to 100 μ m and d100=100 to 150 μ m, has realized the best result with the nano fabrics combination as d50=55 according to the present invention.Term " d50=55 μ m " looks like, and the granularity of 50 % by weight microgranules is maximum 55 μ m, that is 55 μ m or less, and " d100=100 μ m " meaning is that the granularity of 100 % by weight microgranules is maximum 100 μ m, that is there is no microgranule greater than 100 μ m.
By its polymer that forms the superabsorbents microgranule preferably (methyl) acrylate or (methyl) acrylic copolymer, particularly preferably sodium polyacrylate.
According to the present invention, the superabsorbents powder of selected sieve fraction is used for the textile that configuration is made less than superfine fibre or the ultrafine filament of 10 μ m by diameter.The diameter of preferred described fiber or long filament is less than 1 μ m.Such superfine fibre is called as microfibre or nanofiber.
The purposes that described superabsorbents powder is used for the nanofiber of configuration nano fabrics, especially electrostatic spinning is proved to be particularly advantageous, below also will be explained in detail this.
Preferred described fiber or long filament by thermoplasticity and hydrophilic or hydrophiling, can melt spinning polymer form, be particularly preferred at this polyurethane.
Superabsorbents powder according to the present invention is preferred for configuring the hygienic articles of being made by textile.According to the present invention, particularly preferably fluid absorbency ground configures diaper and other incontinence product, sanitary pad and wound binder.
Therefore, the preferred result of purposes of the present invention is the fleece that the nanofiber of elasticity, super-absorbert makes, and is used for the novel sanitation goods, is used in particular for that snugness of fit is better, the more reliable and private higher incontinence product of abnormal smells from the patient constraint.Described hygienic articles is comprised of the fibre object that thermoplastic polyurethane makes, and wherein machinery is fettering by having the superabsorbents powder that particular size distributes and special rear crosslinked polyacrylate (ester) is made.The share that special superabsorbents accounts for the fabric gross weight that configures can be maximum 85 % by weight.
The nanometer fiber net that is used for absorption and reservation hydrophilic fluid with superabsorbents configuration of the present invention is preferred for absorbing and/or delaying to discharge at least a following fluid: body fluid, the antiperspirant of humans and animals, water, comprise cooling water, condensation water and steam, chemicals, comprise agricultural chemicals and insecticide, medicine, Biocide, antibacterial and antifungal, diagnosis medicine, fire prevention and extinguishing chemical, cleaning and cleanser, hydraulic fluid, heating and cooling fluid, waste water, comprise alpha-contamination fluid, perfume.
In order to absorb and/or delay to discharge body fluid, nanometer fiber net of the present invention is preferably used as incontinence articles, baby diaper, sanitary pad, wound binder, cooling package, sanitary towel, cosmetic liner or bed lining or is used as the part of above-mentioned object.
In order to absorb and/or delay to discharge the antiperspirant in human or animal source, nanometer fiber net of the present invention is preferably used as absorption of perspiration footwear lining material, coat parts (Bekleidungsst ü cke), head hides, the volume band, glove, upholstered furniture, automotive seats, saddle seat, sheet, bedcover, common and braid wool blanket, moving articles or exercise.
In order to absorb and/or delay to discharge water; comprise cooling water, the condensation water and steam, nanometer fiber net of the present invention is preferably used as dry mop towel; rag; the accident protection pad, Tarpauling, tent ground cushion; wet cloth; dry cloth, polishing cloth, cleaning cloth or wipe window skin rag or as the part of above-mentioned object.
At building field; nanometer fiber net of the present invention is used for absorbing and/or delaying to discharge water; comprise cooling water; the condensation water and steam, be preferably used as floor covering or wall laying, the veneer under parquet floor (Parkettunterspannbahn); veneer under top board (Dachunterspannbahn); fireproof pad, the leakage protection pad, be used for the pad of small pieces of cloth used for patches moist chamber, tent, automobile, groove tank or container or as the part of above-mentioned object.
To can be used as filtering material, packaging material, outer housing, insulant or encapsulant according to another preferable use of nano fabrics of the present invention, perhaps as the part of above-mentioned object.Pack in addition hazardous cargo as what preferred purposes fell into this scope, the outer housing of pipe and pipeline, the outer housing of pipeline, cable comprises the outer housing of communication cable and power cable, with the fluid storage of the above-mentioned type outer housing of all objects of transmission wherein or therein, described fluid forms with condensation water and steam form or because seepage or accident produce.
In order to absorb and/or to delay to discharge chemicals, comprise agricultural chemicals and insecticide, nanometer fiber net of the present invention is preferably used as geotechnological non-woven fabrics, drainage pad, agricultural fleece or as delaying to discharge the fleece of medicine, chemicals, fertilizer or insecticide.In these applications can be in greenhouse or on soil through arable land, field and plantation and the fleece of spread overwide areas, in order to absorb or delay release of active agent.The environmental hazard that the fluid of a large amount of hostile environments wherein occurs, for example cause due to vehicle accident, is the important use field of nano fabrics of the present invention.
In the purposes probability of the nano fabrics that the described superabsorbents of the use that the present invention proposes configures, especially lentamente, when delay (again) discharges the Fluid Volume absorb, high water or fluid reserve capability and high water or absorption of fluids speed seem it is obviously favourable.Even thereby can absorb very soon and get rid of the fluid of pouring out very in a large number.
In addition, described fleece advantageously can be preventative for following all places, seepage will be worried in these places, and water, but also toxic, corrosivity, acidity, alkalescence or environmentally hazardous fluid can flow out from pipeline, container, packing, groove tank, automobile, industrial equipment etc.; Then the fluid that flows out is used to immediately the fleece of Bao Meng or packing or small pieces of cloth used for patches pipeline etc. and draws, and because the wicking that starts very rapidly absorbs.
Below take the hygienic articles based on textile as instance interpretation advantage of the present invention, but should the understanding of being restricted property:
1. better private
At first the thickness of incontinence product and the reason of large volume are, superabsorbents powder (SAP) expands when with water, contacting, and microgranule is mutually bonding, thereby make further water absorb difficulty or stop, absorb (gel stops).Stop for fear of gel, SAP always mixes use with short cellulose fibre (fibre stuff (Pulp)) so far, and described staple cellulose fibers keeps microgranule to be separated from each other.The share of SAP mostly is 50% most in the case, and the density of fibre stuff is very little, so volume is very large, and has enlarged markedly the volume for the required SAP/Pulp-amount of Liquid Absorption.
In order to overcome this shortcoming and can to omit fibre stuff, but to guarantee simultaneously to resemble the large surface of SAP itself this moment, carried out multinomial experiment, described superabsorbents does not use as powder, but with other form, for example, as foam, as fleece or with the fiber with the superabsorbents coating and fibroreticulate form, use.But due to serious defect, for example after moistening, intensity is impaired, and the anisotropy that the fragility/fragility under drying regime or wetting behavior are outstanding, do not use these structures.
So, the new formulation of material of the present invention is, each microgranule with superabsorbents powder of definite particle size distribution is strapped in the elastic fiber web frame like this, make described microgranule spatially be separated from each other, comprehensive moistening when with water, contacting, and can expand by 3 D auto, in the case,, because the elasticity of fleece substrate has been prevented gel and stopped, because can cause like this space requirement to raise when superabsorbents expands, thereby keep microgranule to be separated from each other out as far as possible.
2. the snugness of fit that improves
, by containing the elastic fiber web frame of high share superabsorbents, can replace large volume SAP/Pulp mixture commonly used at present, and avoid the shortcoming of traditional incontinence articles.Thickness is decreased to 1/10.Due to compliance, elasticity and the less thickness of material of the present invention, the designer of incontinence articles may make the snugness of fit of similar underwear and privacy and technical performance have both fully.
3. the preparation technology that simplifies of hygienic articles
In addition, fibre stuff accurate process equipment by making the costliness that connects in diaper machine upstream and the equipment that mixes SAP and fibre stuff are replaced by band (Bahnen) shape, striated or curling (Rollenware) shape, fibroreticulate preset (Vorlage) elasticity, super absorption, reach the simplification to diaper preparation technology.All diaper configurations have been simplified in addition, because can abandon constructing element, as cotton paper (Tissue) and core volume (Corewrap).Diaper structure is simplified to for example film of flexible, respiratory activity, in preparation process on described film coating according to article of the present invention (resilient absorbent web), and with the distributed fibers net and/or hide fleece and cover.It can be coated in the preparation process of material of the present invention on film or paper tinsel as carrier material, and cover with traditional fleece in ensuing processing step.Under suitable design conditions, in the composite that obtains like this, described film or paper tinsel be corresponding to traditional bottom surface (Backsheet), and material of the present invention is corresponding to traditional absorbent core, and cover fleece corresponding to Distribution Layer or end face (Topsheet) or both.
4. abnormal smells from the patient
The starting point of conventional formulation of constraint abnormal smells from the patient is, be mostly the volatile compound of amine as odor vector because bacterial decomposition urine inclusions forms.Correspondingly, by regulating the degree of neutralization of superabsorbents, by with pH buffer or bateriostatics, studying, to prevent breeding and the activity of microorganism.Using in the case bateriostatics or even use antibacterial,, because relevant with it meeting produces allergic risk, is very controversial.
Based on the following fact, urine flavor is mainly the abnormal smells from the patient of the ammonia that forms by the enzyme decomposing urea after all, although organized enzyme is used in the metabolism of carbamide by microorganism, but the effectiveness of enzyme and appearance are not subjected to the constraint of living cells, the new way (Ansatz) that solves these problems of traditional incontinence articles is, do not restrain microorganism, but block the effectiveness of the enzyme that makes the carbamide division by specific enzyme blocker.
The allergic cell toxicant of traditional generation such as antibacterial are by known replacing without hazardness enzyme blocker, not only to the patient or wherein exist the situation of corresponding benefit/risk balance not limit the technology of abnormal smells from the patient constraint, can also be widely used in the quality of life of improving incontinence.
Described enzyme blocker can be sneaked into when the elastic webs of preparation weaving material (Spinnmasse), and is that effectively perhaps it can be coated on fiber surface with the dipping form subsequently after being diffused into the surface of fiber.
5. textile
By document, for example known by United States Patent (USP) 4043331, adopt electrospinning, polymer can be processed to from solution the fleece of continuous filament yarn system.Electrospinning is a kind of technology that is mainly experimental generation fibre object of seldom promoting.But this provides following probability; when there is no other fleece laying technology; in order to produce the continuous filament yarn of diameter in the different types of polymers system of nanometer range; also be synthetic rubber; and paved with a kind of woven web form, in spinning process, microgranule for example granule or microcapsule (is filled with active substance; spice etc. are that water or temperature are activable) mechanical type is strapped in fiber net structure.There is in addition following probability, to adding for example enzyme of active substance in described spinning solution, the enzyme blocker, vitamin, surfactant, wetting agent etc., they are due on the surface of the fiber that is diffused into ejection and can bring into play there its effect.
The people such as L.M.Hansen are at periodical Applied Polymer Science, the 95th volume, 427-434 page (2005) has been reported the elastic webs by thermoplastic polyurethane system that makes according to " electrospinning " method, it is filled with modified starch (the Grain Processing Corp. of company, Muscatine, IA, commodity are called " Waterlock ") as superabsorbents.This material has had beneficial property, but can not meet than absorbing, Liquid Absorption speed and as the requirement aspect the maximum compactedness of the absorbent of hygienic articles absorbent core sub.
In expectation, by often as the polyacrylate (ester) of superabsorbents in hygienic articles, replacing the modified starch (Waterlock) of composition material, can meet described requirement, will be purchased conventional superabsorbents powder and be crushed to as incorporating the required apparent particle size of described nanometer fiber net into, thereby preparation contains the nanometer fiber net of superabsorbents.According to expectation, although find with fleece with modified starch (Waterlock) filling Comparatively speaking the absorption behavior make moderate progress, but,, because gel stops, there is no to have produced the compactedness higher than 50% in measurable improvement situation than absorption.
Find surprisingly now, superabsorbents microgranule by the sodium polyacrylate system of suitable particle size, it is not to make by the traditional superabsorbents powder of fragmentation, but as the sieve fraction of crosslinked microgranule behind surface, obtain,, although with traditional superabsorbents powder, compare and basically delayed absorption, given preferably by the obvious superior character of the population structure of polyurethane fiber net and superabsorbents system.In case use by crosslinked superabsorbents powder behind the polyacrylate (ester) with intact core/shell structure and suitable particle size distribution or surface that other suitable copolymer makes, can realize namely that fast Liquid Absorption and distribution and higher ratio absorb, the diameter of each long filament that is formed by thermoplastic polyurethane and superabsorbents powder simultaneously in nanometer to the fibroreticulate higher compactedness of the super absorption of micrometer range maximum approximately 85%.
Below explain in more detail the present invention by embodiment:
Method of testing
A. tea bag absorbs test (Tb)
" tea bag " absorbs test and learns unresisted Liquid Absorption.The SAP sample of determining amount is filled in commercial general tea bag; This tea bag be immersed in 0.9% superfluous salt solution 30 minutes long, then take out; Afterwards the control of this bag is done 10 minutes long.
Tb value ([g/g]) is the ratio between the water yield that absorbs and initial SAP amount.
B. water retention test
This test demonstrates the water retention of the SAP sample of expansion.To add in centrifuge from the tea bag of the expansion of Tb test, and under 250g accelerates centrifugal 3 minutes long.
Crc value ([g/g]) is the ratio between the water yield that remains and initial SAP amount.
C. vertical wick effect
This test learns that water absorbs speed and the privileged direction of diffusion.To have the large adhesive tape of 10 * 1cm of SAP sample adhered thereto and mark with the spacing of 1cm respectively, and be dipped vertically in 0.9% NaCl solution, until first 1cm labelling; Offset expansion of liquids by the streak of regulating on telltale mark.Measurement reach because solution raises on tape 1,2,3,4 and 5cm apart from the time time.
Result
According to Electrospinning Method, preparation, by the fleece of the thermoplastic polyurethane of different amounts and different absorbent material system, and is carried out above-mentioned test on laboratory Weaving device or tentative Weaving device.
In experiment 3 according to the present invention, 4,6 and 7, as superabsorbents (SAP), use the surface-crosslinked sodium polyacrylate powder with core/shell structure, the particle size distribution of sieve fraction is: d50 is about 100 μ, that d100 is about 150 μ, and Tb is that approximately 38g/g and CRC are about 22g/g.
Therefore the superabsorbents (SAP) of (be not according to the present invention) of contrast experiment's 5 use Mechanical Crushing and screening subsequently carries out, the particle size distribution of sieve fraction is: d50 is about 55 μ, and that d100 is 100 μ, and Tb is about 38g/g, and CRC is about 22g/g.
Such as now in traditional hygienic articles common business can to utilize the granularity fraction of SAP to be proved too thick.They can not be processed without problems, can not be strapped in fiber net structure faultlessly, and flow out from fiber net structure in the moistening situation.Therefore first previous experiments is regulated with commercial general sap type.
Described experimental result is summarized in table 1.
Experiment shows, the surface-crosslinked sodium polyacrylate powder that has core/shell structure by use, compactedness is 50% left and right, granularity is d50=100 μ, d100=150 μ, the water infiltration rate can drop to 80 seconds from 450 seconds, and water absorbs and can be elevated to 40g/g from 29g/g, perhaps from 16g/g, was elevated to 22g/g.Also do not find that in 50% compactedness situation gel stops, and or rather, Tb value and crc value have also shockingly reached the theoretical value of pure SAP.A kind of model (Muster) of the same composition that makes on larger tentative Weaving device shows comparable good result, and has confirmed reproducibility (experiment 6).
Also show in 5 in experiment, the share that the infringement that after the SAP microgranule, crosslinked shell causes because of Mechanical Crushing and the smaller particle size that causes thus account for the SAP sieve fraction increases has adversely affected the speed of Liquid Absorption and the liquid distribution in fleece.
These experiments also show, only the combined elastic fiber net structure demonstrates main qualitative character with the rear crosslinked SAP in the surface with intact core/shell structure and suitable particle size with will causing meeting especially hope, speed and absorbability (Tb, CRC) as Liquid Absorption and liquid distribution.Also finding surprisingly, is not to expect as the fiber net structure due to tiny, and the extra fine powder shows best effect, but obvious particle size greater than the fiber net structure size shows optimum state.
Table
(
*) tentative Weaving device
Claims (34)
1. superabsorbents powder that is formed by the polymer particles with shell crosslinked behind the core that expands under water exists and surface, wherein said powder be the sort of crosslinked behind surface after the sieve fraction of the not broken polymer particles of its shell, it is characterized in that, the particle size distribution of described sieve fraction is d50=55-100 μ m and d100=100-150 μ m.
2. according to claim 1 superabsorbents powder, is characterized in that, described polymer is (methyl) acrylate or (methyl) acrylic acid copolymer product.
3. according to claim 2 superabsorbents powder, is characterized in that, described polymer is sodium polyacrylate.
4. be used for configuration by the purposes of diameter less than the textile of the superfine fibre of 10 μ m or ultrafine filament system to one of 3 superabsorbents powder according to claim 1.
5. according to claim 4 purposes, is characterized in that, the diameter of described fiber or long filament is less than 1 μ m.
6. according to claim 4 purposes, the product that is used for the configuration nano fabrics and makes thus.
7. according to claim 6 purposes, be used for the product that configuration is made by the electrostatic spinning nano fiber.
8. according to claim 4 purposes, is characterized in that, described fiber or long filament by thermoplasticity and hydrophilic or hydrophiling, can melt spinning polymer form.
9. according to claim 8 purposes, is characterized in that, described fiber or long filament consist of polyurethane.
10. according to claim 4 purposes, is characterized in that, described textile forms hygienic articles.
11. purposes according to claim 10, described hygienic articles are selected from incontinence product, sanitary pad and wound binder.
12. with being used for absorbing and keeping the purposes of the nano fabrics of hydrophilic fluid to one of 3 superabsorbents powder configuration according to claim 1, it is used for absorbing and/or delaying to discharge at least a following fluid:
-body fluid,
-water,
-chemicals.
13. the purposes of nano fabrics according to claim 12, wherein body fluid is the antiperspirant of humans and animals, and chemicals is agricultural chemicals, medicine, fireproof agent, cleaning agent or perfume.
14. the purposes of nano fabrics according to claim 12, wherein chemicals is diagnostic agent, extinguishing chemical, cleanser, insecticide, Biocide, antibacterial or antifungal.
15. with being used for absorbing and keeping the purposes of the nano fabrics of hydrophilic fluid to one of 3 superabsorbents powder configuration according to claim 1, it is used for absorbing and/or delaying to discharge at least a following fluid:
-hydraulic fluid,
-heating and cooling fluid,
-waste water.
16. the purposes of nano fabrics according to claim 15, wherein waste water is alpha-contamination fluid.
17. the purposes of the nano fabrics of according to claim 12-16 any one, as incontinence articles, wound binder, cooling package, health cloth, the part of cosmetic liner or bed lining or above-mentioned object.
18. the purposes of nano fabrics according to claim 17, as the part of baby diaper, sanitary pad or described object.
19. the purposes of the nano fabrics of according to claim 12-14 any one, as absorption of perspiration footwear lining material, coat parts, head hides, glove, upholstered furniture, automotive seats, saddle seat, sheet, bedcover, common and braid wool blanket or moving articles.
20. the purposes of the nano fabrics of according to claim 12-15 any one, as the volume band, or exercise.
21. the purposes of the nano fabrics of according to claim 12-16 any one, as rag, accident protection pad, Tarpauling, tent ground cushion, wet cloth, dry cloth or polishing cloth or as the part of above-mentioned object.
22. the purposes of the nano fabrics of according to claim 12-16 any one, as dry mop towel or its part.
23. the purposes of the nano fabrics of according to claim 12-16 any one, as cleaning cloth or its part.
24. the purposes of the nano fabrics of according to claim 12-16 any one, as wiping window skin rag, or its part.
25. the purposes of the nano fabrics of according to claim 12-16 any one, as floor covering or wall laying, the veneer under parquet floor; veneer under top board; fireproof pad, the leakage protection pad, be used for the pad of small pieces of cloth used for patches moist chamber, tent, automobile or groove tank or as the part of above-mentioned object.
26. the purposes of the nano fabrics of according to claim 12-16 any one, with the pad or its part that act on the small pieces of cloth used for patches container.
27. the purposes of the nano fabrics of according to claim 12-16 any one, as filtering material, packaging material, insulant or encapsulant, perhaps as the part of above-mentioned object.
28. the purposes of the nano fabrics of according to claim 12-16 any one, as outer housing or its part.
29. the purposes of the nano fabrics of according to claim 12-16 any one, as geotechnological non-woven fabrics, drainage pad, agricultural fleece or be used for delaying to discharge the fabric of chemicals.
30. the purposes of nano fabrics according to claim 29, wherein chemicals is medicine, fertilizer or insecticide.
31. the purposes of according to claim 12 or 15 nano fabrics, is characterized in that, described fabric consists of superfine fibre or the ultrafine filament of diameter less than 1 μ m.
32. the purposes of nano fabrics according to claim 31, is characterized in that, described fabric is made by the electrostatic spinning nano fiber.
33. the purposes of according to claim 12 or 15 nano fabrics, is characterized in that, the fiber of described fabric or long filament by thermoplasticity and hydrophilic or hydrophiling, can melt spinning polymer form.
34. the purposes of nano fabrics according to claim 33, is characterized in that, described fiber or long filament consist of polyurethane.
Applications Claiming Priority (5)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE102005036992.8 | 2005-08-05 | ||
| DE200510036992 DE102005036992A1 (en) | 2005-08-05 | 2005-08-05 | Super absorbing powder, for e.g. nanofiber products, comprises polymer particles exhibiting a sourceable core and a superficially after-crosslinked shell in the presence of water |
| DE102005054698.6 | 2005-11-16 | ||
| DE102005054698A DE102005054698A1 (en) | 2005-11-16 | 2005-11-16 | Super absorbing powder, for e.g. nanofiber products, comprises polymer particles exhibiting a sourceable core and a superficially after-crosslinked shell in the presence of water |
| PCT/EP2005/014017 WO2007016970A1 (en) | 2005-08-05 | 2005-12-23 | Superabsorbents, nanofibre webs finished therewith, and use thereof |
Related Child Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201210009741.7A Division CN102535016B (en) | 2005-08-05 | 2005-12-23 | Superabsorbents and nanofibre webs finished therewith |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101267847A CN101267847A (en) | 2008-09-17 |
| CN101267847B true CN101267847B (en) | 2013-11-13 |
Family
ID=37670030
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2005800516048A Expired - Fee Related CN101267847B (en) | 2005-08-05 | 2005-12-23 | Superabsorbents, nanofibre webs finished therewith, and use thereof |
Country Status (3)
| Country | Link |
|---|---|
| CN (1) | CN101267847B (en) |
| DE (1) | DE102005036992A1 (en) |
| ZA (1) | ZA200801069B (en) |
Families Citing this family (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102292396B (en) | 2008-11-21 | 2014-09-10 | 巴斯夫欧洲公司 | Mixture of surface postcrosslinked superabsorbers with different surface postcrosslinking |
| US20110054429A1 (en) * | 2009-08-25 | 2011-03-03 | Sns Nano Fiber Technology, Llc | Textile Composite Material for Decontaminating the Skin |
| CN102596132B (en) * | 2010-08-20 | 2015-11-25 | Sns纳米光纤技术公司 | Comprise the Fabric composites of micro/nano-fibre non-woven fabric |
| DE202011105054U1 (en) | 2010-09-03 | 2011-12-29 | Hyga Gmbh & Co. Kg | Disposable diaper |
| CN102462858A (en) * | 2010-11-16 | 2012-05-23 | 于杰 | Human body rehabilitation dressing for body surface |
| AU2012275136B2 (en) * | 2011-06-30 | 2015-10-01 | Ansell Limited | Perspiration control glove |
| DE102014003731A1 (en) | 2014-03-18 | 2015-09-24 | Carl Freudenberg Kg | Fabrics for the controlled release of active substances |
| CN112655539A (en) * | 2021-01-19 | 2021-04-16 | 温州科技职业学院 | Net shed for cultivating miniature potatoes |
| CN114795664B (en) * | 2021-01-27 | 2023-05-26 | 宁波方太厨具有限公司 | Sanitary nursing article and preparation method thereof |
| CN113057783A (en) * | 2021-04-02 | 2021-07-02 | 陕西新容康医疗器械有限公司 | Functional argil granule waistband |
| CN113952845B (en) * | 2021-11-05 | 2022-07-15 | 岭东核电有限公司 | Membrane filter material, preparation method thereof and application of membrane filter material in treating aerosol |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE19909214A1 (en) * | 1999-03-03 | 2000-09-07 | Basf Ag | Water-absorbent, foam-like, crosslinked polymers with improved distribution effect, process for their preparation and their use |
| DE19958697A1 (en) * | 1999-12-06 | 2001-06-07 | Basf Ag | Absorbent preparation |
| DE10202839A1 (en) * | 2002-01-24 | 2003-08-07 | Basf Ag | Hydrogel-forming polymer, used in e.g. hygiene, packaging, food, medicine, cosmetics, textile, chemical, building, water or waste treatment, water separation, cleaning, agriculture or fire protection field, has fine particle size |
| CN100575586C (en) * | 2003-06-30 | 2009-12-30 | 宝洁公司 | Particle in the nanometer fiber net |
| JP4471975B2 (en) * | 2003-06-30 | 2010-06-02 | ザ プロクター アンド ギャンブル カンパニー | Coated nanofiber web |
-
2005
- 2005-08-05 DE DE200510036992 patent/DE102005036992A1/en not_active Withdrawn
- 2005-12-23 CN CN2005800516048A patent/CN101267847B/en not_active Expired - Fee Related
-
2008
- 2008-02-04 ZA ZA200801069A patent/ZA200801069B/en unknown
Also Published As
| Publication number | Publication date |
|---|---|
| ZA200801069B (en) | 2008-12-31 |
| CN101267847A (en) | 2008-09-17 |
| DE102005036992A1 (en) | 2007-02-08 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN102535016B (en) | Superabsorbents and nanofibre webs finished therewith | |
| CN101267847B (en) | Superabsorbents, nanofibre webs finished therewith, and use thereof | |
| US20200316245A1 (en) | Biodegradable Absorbent Articles | |
| JP6488042B1 (en) | Absorbent articles | |
| CN1736355B (en) | Absorbent article | |
| KR101784052B1 (en) | Absorbent article including superabsorbent yarn | |
| JP2008522772A (en) | Discontinuous application of lotion on top sheet of absorbent article | |
| DE202005020566U1 (en) | Super absorbing powder, for e.g. nanofiber products, comprises polymer particles exhibiting a sourceable core and a superficially after-crosslinked shell in the presence of water | |
| CN101404970A (en) | Absorbent article and process for production thereof | |
| HUE028551T2 (en) | Environmentally-friendly disposable absorbent article | |
| CN102036632A (en) | Absorbent core | |
| CN105828764A (en) | Absorbent pads comprising zones of differential absorbent capacity | |
| KR20110021957A (en) | Absorptive article and sanitary napkin | |
| WO2006135017A1 (en) | Absorbent article | |
| US3093546A (en) | Absorbent product | |
| CN1604796A (en) | Absorbent article comprising a yucca extract | |
| AU2006343881B2 (en) | Disposable personal product | |
| JPWO2018025676A1 (en) | Nonwoven sheet | |
| JP3807834B2 (en) | Absorber | |
| JP3737328B2 (en) | Absorption sheet | |
| JP2020151340A (en) | Absorbent article | |
| CN209645238U (en) | A kind of moisture absorption for incontinence de-tastes nursing pad | |
| JPH0938137A (en) | Disposable diaper |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C53 | Correction of patent for invention or patent application | ||
| CB02 | Change of applicant information |
Address after: German Express Applicant after: Schill & Seilacher GmbH Address before: German Express Applicant before: Schill & Seilacher AG |
|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20131113 Termination date: 20191223 |