SE514726C2 - Process for the production of hydroentangled nonwoven material with increased wet strength and material prepared by the process - Google Patents
Process for the production of hydroentangled nonwoven material with increased wet strength and material prepared by the processInfo
- Publication number
- SE514726C2 SE514726C2 SE9500702A SE9500702A SE514726C2 SE 514726 C2 SE514726 C2 SE 514726C2 SE 9500702 A SE9500702 A SE 9500702A SE 9500702 A SE9500702 A SE 9500702A SE 514726 C2 SE514726 C2 SE 514726C2
- Authority
- SE
- Sweden
- Prior art keywords
- plasma
- fibers
- wet
- hydroentangling
- corona treatment
- Prior art date
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Classifications
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- 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
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- 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
- D06M10/00—Physical treatment of fibres, threads, yarns, fabrics, or fibrous goods made from such materials, e.g. ultrasonic, corona discharge, irradiation, electric currents, or magnetic fields; Physical treatment combined with treatment with chemical compounds or elements
- D06M10/02—Physical treatment of fibres, threads, yarns, fabrics, or fibrous goods made from such materials, e.g. ultrasonic, corona discharge, irradiation, electric currents, or magnetic fields; Physical treatment combined with treatment with chemical compounds or elements ultrasonic or sonic; Corona discharge
- D06M10/025—Corona discharge or low temperature plasma
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- D—TEXTILES; PAPER
- D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
- D21H—PULP COMPOSITIONS; PREPARATION THEREOF NOT COVERED BY SUBCLASSES D21C OR D21D; IMPREGNATING OR COATING OF PAPER; TREATMENT OF FINISHED PAPER NOT COVERED BY CLASS B31 OR SUBCLASS D21G; PAPER NOT OTHERWISE PROVIDED FOR
- D21H13/00—Pulp or paper, comprising synthetic cellulose or non-cellulose fibres or web-forming material
- D21H13/10—Organic non-cellulose fibres
- D21H13/12—Organic non-cellulose fibres from macromolecular compounds obtained by reactions only involving carbon-to-carbon unsaturated bonds
- D21H13/14—Polyalkenes, e.g. polystyrene polyethylene
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- D—TEXTILES; PAPER
- D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
- D21H—PULP COMPOSITIONS; PREPARATION THEREOF NOT COVERED BY SUBCLASSES D21C OR D21D; IMPREGNATING OR COATING OF PAPER; TREATMENT OF FINISHED PAPER NOT COVERED BY CLASS B31 OR SUBCLASS D21G; PAPER NOT OTHERWISE PROVIDED FOR
- D21H13/00—Pulp or paper, comprising synthetic cellulose or non-cellulose fibres or web-forming material
- D21H13/10—Organic non-cellulose fibres
- D21H13/20—Organic non-cellulose fibres from macromolecular compounds obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds
- D21H13/24—Polyesters
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- D—TEXTILES; PAPER
- D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
- D21H—PULP COMPOSITIONS; PREPARATION THEREOF NOT COVERED BY SUBCLASSES D21C OR D21D; IMPREGNATING OR COATING OF PAPER; TREATMENT OF FINISHED PAPER NOT COVERED BY CLASS B31 OR SUBCLASS D21G; PAPER NOT OTHERWISE PROVIDED FOR
- D21H25/00—After-treatment of paper not provided for in groups D21H17/00 - D21H23/00
- D21H25/04—Physical treatment, e.g. heating, irradiating
Landscapes
- Engineering & Computer Science (AREA)
- Textile Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Physics & Mathematics (AREA)
- Plasma & Fusion (AREA)
- Mechanical Engineering (AREA)
- Nonwoven Fabrics (AREA)
- Chemical Or Physical Treatment Of Fibers (AREA)
- Spinning Methods And Devices For Manufacturing Artificial Fibers (AREA)
- Paper (AREA)
- Treatment Of Fiber Materials (AREA)
Abstract
Description
514 726 2 används i torkdukar för rengöring tillsammans med lösningsmedel. Bindemedels- förstärkning ger ofta en uppstyvning av materialet, vilket också kan vara en stor nackdel för vissa applikationer där ett mjukt och draperbart nonwovenmaterial krävs. Dessutom innebär bindemedelstillsats en kemisk behandling som ofta är mindre önskvärd ur miljösynpunkt. 514 726 2 is used in cloths for cleaning together with solvents. Binder reinforcement often results in a stiffening of the material, which can also be a major disadvantage for certain applications where a soft and drapeable nonwoven material is required. In addition, binder addition involves a chemical treatment that is often less desirable from an environmental point of view.
Ett annat sätt att höja våtstyrkan i spunlacematerial är genom termobindning, som kan användas i de fall materialet innehåller termoplastiska fibrer. l dessa fall smältes de termoplastiska fibrerna i materialet efter hydroentanglingen med hjälp av hög temperatur och tryck. Nackdelen med detta forfarande är att materialet blir styvare och att de hopsmälta termoplastfibrerna lokalt kan bilda hårda partier som kan repa känsliga ytor vid t ex polering. En annan nackdel med termobindning är att fiberåtervinning försvåras när det gäller blandmaterial (t ex cellulosa/polypropen).Another way to increase the wet strength of spunlace material is by thermal bonding, which can be used in cases where the material contains thermoplastic fibers. In these cases, the thermoplastic fibers in the material were melted after the hydroentangling by means of high temperature and pressure. The disadvantage of this method is that the material becomes stiffer and that the fused thermoplastics can locally form hard parts which can scratch sensitive surfaces during, for example, polishing. Another disadvantage of thermal bonding is that fi recovery is made more difficult when it comes to mixed materials (eg cellulose / polypropylene).
Det skulle även vara tänkbart att öka friktionen hos syntetfibrerna redan i samband med fibertillverkningen. Detta ställer dock till problem vid våt- eller skumforrrniing där man vill ha lägsta möjliga fiber-fiberfriktion för att hålla en så jämn dispergering som möjligt vid formningen. Även vid den efterföljande hydro- entanglingen krävs en förhållandevis låg fiber-fiberfriktion för att man skall erhålla ett gott entanglingsresultat.It would also be conceivable to increase the friction of the synthetic fibers already in connection with ertber production. However, this poses problems with wet or foam formation where you want the lowest possible fi berber fi friction to keep as even a dispersion as possible during molding. Even with the subsequent hydro-entangling, a relatively low fi-ber fiber friction is required in order to obtain a good entangling result.
Ett antal nya metoder att kemiskt-fysikaliskt påverka ytan hos olika material har utvecklats de senaste åren. Bland dessa metoder kan nämnas elektron- bestrålning, UV-teknik och plasmateknik. Fördelen med dessa metoder är att behandlingen skeri gasfas och därför kan göras på ett skonsamt sätt för materialet och utan efterföljande torkning eller efterbehandling.A number of new methods for chemically and physically affecting the surface of various materials have been developed in recent years. These methods include electron irradiation, UV technology and plasma technology. The advantage of these methods is that the treatment takes place in the gas phase and can therefore be done in a gentle way for the material and without subsequent drying or finishing.
Plasma är en övergripande beteckning på gaser som innehåller joner, elektroner, fria radikaler, fotoner inom UV-området, molekyler och atomer. Plasma är elektriskt neutral och genereras normalt genom elektrisk urladdning där energikällan utgörs av radio- eller mikrovågor.Plasma is a general term for gases that contain ions, electrons, free radicals, photons in the UV range, molecules and atoms. Plasma is electrically neutral and is normally generated by electrical discharge where the energy source consists of radio or microwaves.
Plasmabehandling kan sägas vara en vidareutveckling av koronabehandling och den huvudsakliga skillnaden är att koronabehandling utförs vid atmosfärstryck medan s k glödurladdningi kall plasma utförs vid reducerat tryck. Plasmabehand- ling kan utföras i närvaro av olika gaser beroende på vilket syfte man vill uppnå. 514 726 3 Plasmabehandling används idag t ex för att ge plastdetaljer en lackerbar yta.Plasma treatment can be said to be a further development of corona treatment and the main difference is that corona treatment is performed at atmospheric pressure while so-called glow discharge cold plasma is performed at reduced pressure. Plasma treatment can be performed in the presence of different gases depending on the purpose you want to achieve. 514 726 3 Plasma treatment is used today, for example, to give plastic parts a lacquerable surface.
Det används även fór att kemiskt modifiera ytan på fibrer i syfte att öka vätbarheten hos fibrer samt för att öka vidhäftning mellan fiber och ett fyllmedel.It is also used to chemically modify the surface of fibers in order to increase the wettability of fibers and to increase adhesion between fiber and a filler.
I US-A-5,108,7 80 beskrivs plasmabehandling av förstärkningsfibrer vilka skall inbäddas i en termoplastisk matris. Man tror att effekten av plasmabahandlingen är att fria radikaler bildas på fiber- eller materialytan. Dessa fria radikaler kan sedan reagera med varandra, med komponenter i plasmafasen eller med molekyler i atmosfären, t ex syrgas, så snart det behandlade materialet avlägsnats från plasmareaktorn.US-A-5,108,7 80 describes plasma treatment of reinforcing fibers which are to be embedded in a thermoplastic matrix. It is believed that the effect of plasma treatment is that free radicals are formed on the fi berber or material surface. These free radicals can then react with each other, with components in the plasma phase or with molecules in the atmosphere, eg oxygen, as soon as the treated material has been removed from the plasma reactor.
Koronabehandling har sedan länge använts för att morfologiskt och kemiskt modifiera ytan på polymera filmer och i synnerhet i syfte att förbättra vidhäft- ningen av tryckfårg till filmen eller fór att perforera filmen. En apparatur för koronabehandling beskrivs i t ex US-A-4,283,29l. Det är också känt genom t ex US-A-4,535,02O och EP-A-O,483,859 att behandla ytmaterial till absorptions- produkter såsom blöjor och dambindor med korona i samband med att detta även behandlats med en tensid för att öka vätskegenomsläppligheten. Genom korona- behandlingen erhålls en förbättrad bibehållen vätbarhet. I EP-A-484,930 beskrivs att torkdukar av t ex meltblownmaterial kan behandlas med korona för att ge materialet bättre bibehållna absorptionsegenskaper vid upprepade använd- mngar.Corona treatment has long been used to morphologically and chemically modify the surface of polymeric films and in particular for the purpose of improving the adhesion of ink to the film or perforating the film. An apparatus for corona treatment is described in, for example, US-A-4,283,291. It is also known from, for example, US-A-4,535,020 and EP-A-0, 483,859 to treat surface materials for absorption products such as diapers and sanitary napkins with corona in connection with this also being treated with a surfactant to increase liquid permeability. Through the corona treatment, an improved retained wettability is obtained. EP-A-484,930 describes that cloths of eg meltblown material can be treated with corona to give the material better retained absorption properties in repeated uses.
Uppfmningens ändamål och viktigaste kännetecken Ändamålet med föreliggande uppfinning är att åstadkomma ett spunlacematerial, vilket uppvisar förbättrade styrkeegenskaper speciellt i vått tillstånd genom en efterbehandling av materialet utan tillsats av bindemedel eller termobindning.OBJECTS AND MOST IMPORTANT FEATURES OF THE INVENTION The object of the present invention is to provide a spunlace material which exhibits improved strength properties especially in the wet state by a post-treatment of the material without the addition of binder or thermobonding.
Detta har genom uppfinningen lösts genom att materialet efter hydroentanglingen utsätts fór plasma- eller koronabehandling. Plasma- eller koronabehandlingen förmodas modifiera fibrernas yta på sådant sätt att fiber-fiberfriktionen ökar, vilket skulle kunna förklara de förbättrade styrkeegenskaperna hos det behandlade materialet.This has been solved by the invention by subjecting the material to plasma or corona treatment after the hydroentangling. The plasma or corona treatment is believed to modify the surface of the fibers in such a way that the fiber-fiber friction increases, which could explain the improved strength properties of the treated material.
Beskrivning av uppfinningen Plasmabehandling har visat sig vara ett mycket bra sätt att påverka den parameter man vill fórändra i den beskrivna typen av nonwovenmaterial, dvs fiber-fiberfriktionen i vått tillstånd. Även ytmodifieriiig genom koronaurladdning '514 726 1/ vid atmosfärstryck har visat sig ge avsevärda höjningar av våtstyrkan hos de undersökta spunlacematerialen.Description of the invention Plasma treatment has proven to be a very good way of influencing the parameter you want to change in the described type of nonwoven material, ie fi berber fi ber friction in the wet state. Also surface modification by corona discharge '514 726 1 / at atmospheric pressure has been found to give considerable increases in the wet strength of the tested spunlace materials.
Dei materialet ingående fibrerna kan utgöras av syntetiska eller regenererade stapelfibrer, t ex polyester, polyamid, polypropen, rayon och liknande, av växtfibrer, av massafibrer eller blandningar därav. Massafibrerna kan vara av kemisk, mekanisk, termomekanisk, kemimekanisk eller kemitermomekanisk massa (CTMP). Inblandning av mekaniska, termomekaniska, kemimekaniska eller kemitermomekaniska massafibrer ger ett material med högre bulk och förbättrad absorption och mjukhet, vilket beskrivs i vår svenska patentansökan nr. 9500585-6. Styrkeegenskaperna försämras dock varför en efterbehandling för att öka materialets styrka kan vara nödvändig för vissa applikationer. Plasma- eller koronabehandling kommer här in som ett lämpligt alternativ.The fibers contained in the material may be synthetic or regenerated staple fibers, such as polyester, polyamide, polypropylene, rayon and the like, of plant fibers, pulp fibers or mixtures thereof. The pulp fibers can be of chemical, mechanical, thermomechanical, chememechanical or chemithermomechanical pulp (CTMP). Mixing of mechanical, thermomechanical, chememechanical or chemithermomechanical pulps gives a material with higher bulk and improved absorption and softness, which is described in our Swedish patent application no. 9500585-6. However, the strength properties deteriorate, which is why a finishing to increase the strength of the material may be necessary for certain applications. Plasma or corona treatment comes in here as a suitable alternative.
Exempel på växtfibrer som kan användas är bladíibrer såsom abaca, ananas och phormium tenax; bastfibrer såsom lin, hampa och ramie och fröhårsfibrer såsom bomull, kapok och rnilkweed. Vid inblandning av sådana långa hydrofila växtfibrer i våt-eller skurnformade material kan det vara nödvänding att tillsätta ett disper- geringsmedel, t ex en blandning av 75% bis(hydrogenereradtalgalkyl)dimetyl- ammoniumklorid och 25% propylen-glykol. Detta beskrivs närmare i svenska patentansökan nr. 9403618-3.Examples of plant fibers that can be used are leaf fibers such as abaca, pineapple and phormium tenax; bast fibers such as flax, hemp and ramie and seed hair fibers such as cotton, kapok and rnilkweed. When mixing such long hydrophilic plant fibers in wet or scouring materials, it may be necessary to add a dispersant, for example a mixture of 75% bis (hydrogenated tallow alkyl) dimethylammonium chloride and 25% propylene glycol. This is described in more detail in Swedish patent application no. 9403618-3.
I materialet kan även ingå en viss andel återvunna fibrer från textilavfall, nonwovenavfall och liknande. Detta beskrivs i svenska patentansökan nr. 9402804-0. Då sådant material uppvisar lägre styrkor jämfört med material baserade på enbart ny fiberråvara, kan plasma- eller koronabehandling vara ett lämpligt sätt att förbättra styrkeegenskaperna hos dessa material.The material may also include a certain proportion of recycled fibers from textile waste, nonwoven waste and the like. This is described in Swedish patent application no. 9402804-0. As such materials exhibit lower strengths compared to materials based solely on new fiber raw material, plasma or corona treatment may be a suitable way to improve the strength properties of these materials.
Vid framställning av torrforrnade spunlacernaterial luftläggs torra fibrer på en vira, varefter fiberbanan utsätts för hydroentangling. Vid framställning av våt- eller skurnformade material dispergeras fibrerna i vätska alternativti en uppskummad vätska innehållande en skumbildande tensid och vatten. Ett exempel på ett lämpligt sådant skumforrnniiigsförfarande finns i svenska patentansökan nr. 9402470-0. Fiberdispersioneri avvattnas på en vira och hydroentanglas med en energiinsats som lämpligen liggeri intervallet 200-800 kWh/ton. Hydroentanglingen sker med konventionell teknik och med utrustning som tillhandahålles av maskintillverkare. Framställning av torr- och våtformade spunlace material beskrivs i t ex CA 841,938. 514' 726 5 Hydroentanglingen av en våt- eller skurnformad fiberbana kan antingen ske in line, dvs i direkt anslutning till att fiberbanan avvattnats på viran, eller på ett våtformat ark som torkats och rullats upp efter formníngen. Flera sådana ark kan lamineras samman genom hydroentangling. Det är även möjligt att kombinera torrformning med våt- eller skumformning, på sådant sätt att en luftlagd bana av t ex syntetfibrer entanglas samman med ett våt- eller skumformat pappersark av massafibrer, se t ex CA 841,938 och EP-B-0,l08,621. Efter hydroentanglingen pressas och torkas materialet samt rullas upp. Det färdiga materialet konverte- ras sedan på känt sätt till lämpligt format och förpackas.In the production of dry-formed spun laser materials, dry fibers are aerated on a wire, after which the fi berbanan is subjected to hydroentangling. In the production of wet or scoured materials, the fibers are dispersed in liquid or in a foamed liquid containing a foaming surfactant and water. An example of a suitable such foaming process is found in Swedish patent application no. 9402470-0. Fiber dispersion is dewatered on a wire and hydroentane glass with an energy input that is suitably in the range 200-800 kWh / ton. Hydroentangling is done with conventional technology and with equipment provided by machine manufacturers. Preparation of dry and wet spunlace materials is described in, for example, CA 841,938. 514 '726 5 The hydroentangling of a wet or scoured fiber web can take place either in line, ie in direct connection with the fiber web being dewatered on the wire, or on a wet-shaped sheet which has been dried and rolled up after the forming. Several such sheets can be laminated together by hydroentangling. It is also possible to combine dry forming with wet or foam forming, in such a way that an air-laid web of, for example, synthetic fibers is entangled together with a wet or foam-shaped sheet of pulp, see for example CA 841,938 and EP-B-0, 108. 621. After hydroentangling, the material is pressed and dried and rolled up. The finished material is then converted in a known manner to a suitable format and packaged.
Uppfinningen är av särskilt stor betydelse för våt- och skumformade spunlace- material, där man är mer begränsad i sitt val av fiberlängd då alltför långa fibrer är svåra att dispergera i vätska eller skum. Problemet med tillräcklig våtstyrka är normalt större i ett material som innehåller korta fibrer.The invention is of particular importance for wet- and foam-shaped spunlace materials, where one is more limited in one's choice of fiber length as too long fibres are difficult to disperse in liquid or foam. The problem of sufficient wet strength is usually greater in a material that contains short fi brs.
Plasma- eller koronabehandlingen av materialet sker lämpligen på det torra materialet innan upprullning. Med torrt material menas här ett material som uppvisar en fukthalt på högst 10 vikts-% räknat på materialets totala vikt.The plasma or corona treatment of the material preferably takes place on the dry material before winding. By dry material is meant here a material which has a moisture content of at most 10% by weight calculated on the total weight of the material.
Exempel på gaser som kan användas vid plasmabehandling vid reducerat tryck är syrgas, kvävgas, argon, helium, ammoniak, koltetraíluorid, koldioxid och organiska omättade gaser. Syrgas eller kvävgas är härvid föredragna. Det material som skall behandlas matas genom en plasmaariläggriing av kommersiellt tillgängligt slag, exempelvis från Centexbel. Behandlingen sker företrädesvis kontinuerligt, dvs materialet matas kontinerligt genom en vakuumkammare, vilken innehåller elektroder, injicerings- och evakueringsanordning för den använda gasen, frammatningsanordning för materialet samt en högfrekvensgenerator.Examples of gases that can be used in plasma treatment at reduced pressure are oxygen, nitrogen, argon, helium, ammonia, carbon tetraluoride, carbon dioxide and organic unsaturated gases. Oxygen or nitrogen gas are preferred here. The material to be treated is fed by a plasma coating of a commercially available type, for example from Centexbel. The treatment preferably takes place continuously, ie the material is fed continuously through a vacuum chamber, which contains electrodes, injection and evacuation device for the gas used, feed device for the material and a high-frequency generator.
Koronabehandlingen kan ske med utrustning av kommersiellt tillgängligt slag, t ex Ahlbrandt System ASOH 12.The corona treatment can be done with equipment of a commercially available type, eg Ahlbrandt System ASOH 12.
Exempel Några olika material med olika fibersammansättning har framställts genom våt- eller skumfornmingsteknik med efterföljande hydroentangling. Materialen genomgick därefter plasmabehandling vid reducerat tryck (O.7 mbar) i närvaro av antingen syrgas eller kvävgas alternativt koronabehandling vid atmosfärstryck. '514 726 6 J äxnfórelse gjorts med referensmaterial som inte genomgått plasma- eller koronabehandling. Dei materialen ingående fibrerna utgjordes av en blandning av kemiska massafibrer och syntetfibrer. De kemiska massañbrerna utgjordes av blekt kemisk barrvedsmassa . De använda syntetñbrerna utgjordes av polyester 1.5 dtex x 12.7 mm respektive polypropen 1.7 dtex x 12 mm samt 1.7 dtex x 18 mm. Hydroentanglingen skedde med en energiinsats av ca. 600 kWh/ton. Efter hydroentanglingen och fore plasma- eller koronabehandlingen pressades materialen lätt och torkades medelst genomblåsning vid l30°. Materialens egenskaper redovisas i nedanstående Tabell 1 och 2.Examples Some different materials with different fiber composition have been produced by wet or foam forming technique with subsequent hydroentangling. The materials were then subjected to plasma treatment at reduced pressure (O.7 mbar) in the presence of either oxygen or nitrogen or alternatively corona treatment at atmospheric pressure. 514 726 6 Comparison made with reference materials which have not undergone plasma or corona treatment. The fibers contained in the materials consisted of a mixture of chemical pulps and synthetic fibers. The chemical pulps consisted of bleached chemical softwood pulp. The synthetic fibers used consisted of polyester 1.5 dtex x 12.7 mm and polypropylene 1.7 dtex x 12 mm and 1.7 dtex x 18 mm. The hydroentangling took place with an energy input of approx. 600 kWh / ton. After the hydroentangling and before the plasma or corona treatment, the materials were lightly pressed and dried by blowing at 130 °. The properties of the materials are reported in Tables 1 and 2 below.
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NNNN mšöm msm QÉGN 514 726- cm>oš :oc ouwšš ö. Noaecmuoeuàoa Qmcwš: šßfišëëo.. ä :Nšošcoc bum=fl> ä. .mêcoaomuxïa šmcwš... šoïoëêo.. än cm> ošcoc bmßš. ä. .ooïøïøxwoa šmcmmš åßÉoEEo.. NN wmmwëmuoèeuo V_N..Eo« :En QBÃQN.. =E..N>NEEo« 2 En... bašc. 23.3 wo. oucxfløo .mšzwmmc...mcflcm ß .N NN m.. S NN t NN NN m2 U S .N _8N.._ösN>. šmåmäfiwa NS NmN m: mNN mNm N.m Nm. NS. mNN. SN så ._33 <É>5o NmN SN :a Nå :N SN S.. mNN. NNN NmN så es... .šmåwmämo Ne ..m m ..m mm N.m N_m N... N... ma. oas". få .mN SN .NN S.. N.m SN S.. m9. NN.. S.. s.. .vmdöofi QS NS Nä NS NS NS ...NN NS N_mN NNN Nea .Cšš se N se N Nä 2 . se N se N . se N se N . ocwozzoz š SN š SN >> S. . š SN .s SN . š SN >> SN . Ewïw .Se E. .Se N... .Be N... . .Se N... .Bs N... . .Se N... .Se N... . zon No No No . No Nz . No Nz - w<øwozsoz o.. S. S. o. .ozšxmosmozäwïmzozwo za. :E :E Qšzwmmmm S? S? NS” eo_.._>>v_._omwzwwøzzozízw N.. . . se N. . :šï zmmomèfiom .N . S . se N. . :SS zmäommäon. .N . . S se NN. Laem.. mEmNZoN .N S S S æwmmämš ššwx .N Neešseexm Nëêoš.. Nsešoës, Szvmëwozízmom Nu Nd G .Hd ä. H1 und. ä. .d .á .NNNN mšöm msm QÉGN 514 726- cm> oš: oc ouwšš ö. Noaecmuoeuàoa Qmcwš: šß fi šëëo .. ä: Nšošcoc bum = fl> ä.. ä. .ooïøïøxwoa šmcmmš åßÉoEEo .. NN wmmwëmuoèeuo V_N..Eo «: En QBÃQN .. = E..N> NEEo« 2 En ... bašc. 23.3 wo. oucx fl øo .mšzwmmc ... mc fl cm ß .N NN m .. S NN t NN NN m2 U S .N _8N .._ ösN>. šmåmä fi wa NS NmN m: mNN mNm N.m Nm. NS. mNN. SN so ._33 <É> 5o NmN SN: a Now: N SN S .. mNN. NNN NmN så es .... .šmåwmämo Ne ..m m ..m mm N.m N_m N ... N ... ma. oas ". få .mN SN .NN S .. Nm SN S .. m9. NN .. S .. s .. .vmdöo fi QS NS Nä NS NS NS ... NN NS N_mN NNN Nea .Cšš se N se N Nä 2. se N se N. Se N se N. Ocwozzoz š SN š SN >> S.. Š SN .s SN. Š SN >> SN. Ewïw .Se E. .Se N .... .Be N. .. .Se N .... .Bs N .... .Se N .... .Se N .... zon No No No. No Nz. No Nz - w <øwozsoz o .. SS o. ozšxmosmozäwïmzozwo za.: E: E Qšzwmmmm S? S? NS ”eo _.._ >> v _._ omwzwwøzzozízw N .... se N..: šï zmmomè fi om .N. S. se N..: SS zmäommäon. .N .S se NN. Laem .. mEmNZoN .NSSS æwmmämš ššwx .N Neešseexm Nëêoš .. Nsešoës, Szvmëwozízmom Nu Nd G .Hd ä. H1 und. Ä. .D .á.
N .Iwmfr 514726 Ešošco: bmmzg så Snïöaoäšwva mšmcwmš šmïšEëox Q mmwmëmuøšme .Éëmx :EE åmcufiš: Søïëëëox ä än: .omzmë bwâmm wa uwcxwëa .ñšcøwmfißäcuacm ß .àš . :e :š S ä .\. .šztäsflv §mš3<>4wm .Éâ màwom E.. ä. šz .maß šmšwmämo b; Nää Qšöw KN ma ...i _33 šmïwmämo 253 šzäë S ...m 926 .få 3% mà »å Qàëm i: må Nea 5.5; så, 8. . ozzoz seš 2 . Éomov. »wföcfixzšw o: o. .oz_z¥mø»woz_zmïm2ozwø .š ozämwmmfi. 08,. cezšv.__ømwzwmoz:øzšzm .. : e: š S ä. \. .šztäs fl v §mš3 <> 4wm .Éâ màwom E .. ä. šz .maß šmšwmämo b; Nää Qšöw KN ma ... i _33 šmïwmämo 253 šzäë S ... m 926 .få 3% mà »å Qàëm i: må Nea 5.5; so, 8.. ozzoz seš 2. Éomov. »Wföc fi xzšw o: o. .Oz_z ¥ mø» woz_zmïm2ozwø .š ozämwmm fi. 08 ,. cezšv .__ ømwzwmoz: øzšzm.
Q 9. så. . šš.. zmíomuäøa x 2 8 fmæämmš ššmš .s 9ëêee=xm šzvnåmozašmol Euqåä xušïšïoëë hä mama øbcmqâ wa oc._c.më.ëe\.â N mmbåš: måïcmcweæcflzox Qbšoeenß w jwm/I 514 '726 “i Resultaten visar att den våta dragstyrkan i de plasma- respektive korona- behandlade materialen flerdubblades. Den torra dragstyrkan ökade också något.Q 9. so. . šš. the tensile strength of the plasma- and corona-treated materials was multiplied. The dry tensile strength also increased slightly.
Den kraftiga ökningen av den våta dragstyrkan förmodas bero på att plasma- respektive koronabehandlingen modifierar ytan hos fibrerna på sådant sätt att fiber-fiberfriktionen ökar. Då det just är den våta dragstyrkan som ofta varit problemet i spunlacematerial erbjuder uppfinningen en lösning på ett tidigare svårlöst problem. Den uppfinningsenliga lösningen innebär också att behovet av bindemedel och andra våtstyrkehöjande kemikalier samt termobindning elimineras.The sharp increase in the wet tensile strength is assumed to be due to the plasma and corona treatment modifying the surface of the fibers in such a way that the carrier friction increases. As it is precisely the wet tensile strength that has often been the problem in spunlace material, the invention offers a solution to a previously difficult-to-solve problem. The solution according to the invention also means that the need for binders and other wet strength-increasing chemicals as well as thermal bonding is eliminated.
Genom sin höga våtstyrka är materialet syrmerligen lämpligt som torkrnaterial för hushållsändamål eller för storförbrukare som verkstäder, industrier, sjukhus och andra offentliga inrättningar. Det är även användbart som engångsmaterial inom sjukvården, t ex operationsrockar, lakan och liknande. Det kan också användas som komponent i absorptionsprodukter såsom bindor, trosskydd, blöjor, inkontinensprodukter, sängunderlägg, sårfórband, kompresser och liknande.Due to its high wet strength, the material is particularly suitable as a drying material for household purposes or for large consumers such as workshops, industries, hospitals and other public institutions. It is also useful as disposable material in healthcare, such as surgical gowns, sheets and the like. It can also be used as a component in absorbent products such as sanitary napkins, panty liners, diapers, incontinence products, bedding, wound dressings, compresses and the like.
Claims (9)
Priority Applications (13)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| SE9500702A SE514726C2 (en) | 1995-02-27 | 1995-02-27 | Process for the production of hydroentangled nonwoven material with increased wet strength and material prepared by the process |
| PCT/SE1996/000199 WO1996027044A1 (en) | 1995-02-27 | 1996-02-15 | Method for producing a spunlace material with increased wet strength and spunlace material according to the method |
| DE69615365T DE69615365T2 (en) | 1995-02-27 | 1996-02-15 | METHOD FOR THE PRODUCTION OF A SPINNING FLEECE MATERIAL WITH INCREASED WET STRENGTH AND THE SPINN FABRIC MANUFACTURED WITH THIS METHOD |
| AU48935/96A AU696440B2 (en) | 1995-02-27 | 1996-02-15 | Method for producing a spunlace material with increased wet strength and spunlace material according to the method |
| AT96905094T ATE205895T1 (en) | 1995-02-27 | 1996-02-15 | METHOD FOR PRODUCING A SPUNNOVED MATERIAL WITH INCREASED WET STRENGTH AND THE SPUNNOVED PRODUCED USING THIS METHOD |
| ES96905094T ES2164871T3 (en) | 1995-02-27 | 1996-02-15 | MANUFACTURING PROCEDURE OF A NON-FABRICED OR SEAMED PRODUCT BY SPINING WITH AN INCREASED HUMIDITY RESISTANCE; AND SEWING PRODUCT BY THREAD OBTAINED ACCORDING TO THIS PROCEDURE. |
| JP8526189A JPH11501085A (en) | 1995-02-27 | 1996-02-15 | Method for producing spunlace material with increased wet strength and spunlace material according to the method |
| CA002213809A CA2213809A1 (en) | 1995-02-27 | 1996-02-15 | Method for producing a spunlace material with increased wet strength and spunlace material according to the method |
| EP96905094A EP0833977B1 (en) | 1995-02-27 | 1996-02-15 | Method for producing a spunlace material with increased wet strength and spunlace material according to the method |
| ZA961387A ZA961387B (en) | 1995-02-27 | 1996-02-21 | Method of producing a spunlace material with increased wet strength and spunlance material according to the method |
| TW085102099A TW293046B (en) | 1995-02-27 | 1996-02-24 | |
| CN96105513A CN1137584A (en) | 1995-02-27 | 1996-02-26 | Method for producing spunlace material with increased wet strength and spunlace material according to method |
| NO19973872A NO310886B1 (en) | 1995-02-27 | 1997-08-22 | Process for the preparation of a jet felt material having increased wet strength and jet felt material obtained by the method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| SE9500702A SE514726C2 (en) | 1995-02-27 | 1995-02-27 | Process for the production of hydroentangled nonwoven material with increased wet strength and material prepared by the process |
Publications (3)
| Publication Number | Publication Date |
|---|---|
| SE9500702D0 SE9500702D0 (en) | 1995-02-27 |
| SE9500702L SE9500702L (en) | 1996-08-28 |
| SE514726C2 true SE514726C2 (en) | 2001-04-09 |
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| Application Number | Title | Priority Date | Filing Date |
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| SE9500702A SE514726C2 (en) | 1995-02-27 | 1995-02-27 | Process for the production of hydroentangled nonwoven material with increased wet strength and material prepared by the process |
Country Status (13)
| Country | Link |
|---|---|
| EP (1) | EP0833977B1 (en) |
| JP (1) | JPH11501085A (en) |
| CN (1) | CN1137584A (en) |
| AT (1) | ATE205895T1 (en) |
| AU (1) | AU696440B2 (en) |
| CA (1) | CA2213809A1 (en) |
| DE (1) | DE69615365T2 (en) |
| ES (1) | ES2164871T3 (en) |
| NO (1) | NO310886B1 (en) |
| SE (1) | SE514726C2 (en) |
| TW (1) | TW293046B (en) |
| WO (1) | WO1996027044A1 (en) |
| ZA (1) | ZA961387B (en) |
Families Citing this family (19)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO1997048114A1 (en) * | 1996-06-12 | 1997-12-18 | American International Technologies, Inc. | Actinic radiation source having anode that includes a window area formed by a thin, monolithic silicon membrane |
| US5972039A (en) * | 1997-04-07 | 1999-10-26 | Isolsyer Company, Inc. | Increased absorbency and hand-feel fabrics |
| GB9715508D0 (en) * | 1997-07-24 | 1997-10-01 | Scapa Group Plc | Industrial fabrics and method of treatment |
| FR2775488B1 (en) * | 1998-02-27 | 2000-05-19 | Nylstar Sa | PROCESS FOR THE PLASMA TREATMENT OF A FIBER OR YARN ARTICLE |
| US6146462A (en) * | 1998-05-08 | 2000-11-14 | Astenjohnson, Inc. | Structures and components thereof having a desired surface characteristic together with methods and apparatuses for producing the same |
| FI106566B (en) * | 1998-06-12 | 2001-02-28 | Suominen Oy J W | Process for improving and controlling the adhesion strength of the fibers in cellulose or cellulose synthetic fiber blends in a process for producing nonwoven fabric products |
| SE513243C2 (en) | 1998-12-11 | 2000-08-07 | Sca Research Ab | A method for increasing the wet strength of a tissue material as well as the tissue material according to the method |
| EP1124008A1 (en) * | 2000-02-11 | 2001-08-16 | L'air Liquide, Societe Anonyme Pour L'etude Et L'exploitation Des Procedes Georges Claude | Method for treating cellulosic fibres |
| DE20004553U1 (en) * | 2000-03-07 | 2000-09-28 | Vliestec AG, 39112 Magdeburg | Bast fiber nonwoven |
| US7887889B2 (en) | 2001-12-14 | 2011-02-15 | 3M Innovative Properties Company | Plasma fluorination treatment of porous materials |
| US6878419B2 (en) | 2001-12-14 | 2005-04-12 | 3M Innovative Properties Co. | Plasma treatment of porous materials |
| ITMI20031548A1 (en) | 2003-07-29 | 2005-01-30 | Orlandi Spa | NO-FABRIC FABRIC PACKS |
| DE10359847A1 (en) * | 2003-12-19 | 2005-07-28 | Metsä Tissue Oyj | Process and assembly to modify the surface characteristics of tissue paper or baking paper by exposure to plasma cloud |
| DE202010014178U1 (en) | 2010-10-11 | 2012-01-17 | Cellcomb Aktiebolag | Bag-like food underlay and storage for foods |
| CN105821646A (en) * | 2015-10-26 | 2016-08-03 | 盐城工学院 | Method for improving moisture absorption performance of kapok fiber through corona treatment |
| FI129075B (en) * | 2016-03-24 | 2021-06-30 | Paptic Ltd | Method of producing a fibrous web containing natural and synthetic fibres |
| FI127749B (en) * | 2016-05-23 | 2019-01-31 | Paptic Oy | Method for manufacturing a fibrous web |
| CN106757769A (en) * | 2016-12-02 | 2017-05-31 | 吉林省华纺静电材料科技有限公司 | A kind of preparation method of odorlessness and attached electrostatic multifunctional spun lacing industry wiper |
| CN112391738B (en) * | 2020-10-16 | 2021-08-20 | 吉祥三宝高科纺织有限公司 | Warm-keeping flocculus with air lock function and preparation method thereof |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2120694A (en) * | 1982-05-01 | 1983-12-07 | John Christopher Roberts | Method of rendering a material hydrophobic |
| US5112690A (en) * | 1990-11-01 | 1992-05-12 | Kimberly-Clark Corporation | Low hydrohead fibrous porous web with improved retentive wettability |
-
1995
- 1995-02-27 SE SE9500702A patent/SE514726C2/en not_active IP Right Cessation
-
1996
- 1996-02-15 AU AU48935/96A patent/AU696440B2/en not_active Ceased
- 1996-02-15 CA CA002213809A patent/CA2213809A1/en not_active Abandoned
- 1996-02-15 EP EP96905094A patent/EP0833977B1/en not_active Expired - Lifetime
- 1996-02-15 WO PCT/SE1996/000199 patent/WO1996027044A1/en active IP Right Grant
- 1996-02-15 ES ES96905094T patent/ES2164871T3/en not_active Expired - Lifetime
- 1996-02-15 JP JP8526189A patent/JPH11501085A/en active Pending
- 1996-02-15 AT AT96905094T patent/ATE205895T1/en not_active IP Right Cessation
- 1996-02-15 DE DE69615365T patent/DE69615365T2/en not_active Expired - Fee Related
- 1996-02-21 ZA ZA961387A patent/ZA961387B/en unknown
- 1996-02-24 TW TW085102099A patent/TW293046B/zh active
- 1996-02-26 CN CN96105513A patent/CN1137584A/en active Pending
-
1997
- 1997-08-22 NO NO19973872A patent/NO310886B1/en unknown
Also Published As
| Publication number | Publication date |
|---|---|
| EP0833977A1 (en) | 1998-04-08 |
| NO973872D0 (en) | 1997-08-22 |
| CN1137584A (en) | 1996-12-11 |
| ATE205895T1 (en) | 2001-10-15 |
| DE69615365D1 (en) | 2001-10-25 |
| WO1996027044A1 (en) | 1996-09-06 |
| CA2213809A1 (en) | 1996-09-06 |
| EP0833977B1 (en) | 2001-09-19 |
| ES2164871T3 (en) | 2002-03-01 |
| NO973872L (en) | 1997-08-22 |
| AU4893596A (en) | 1996-09-18 |
| AU696440B2 (en) | 1998-09-10 |
| DE69615365T2 (en) | 2002-07-04 |
| SE9500702D0 (en) | 1995-02-27 |
| JPH11501085A (en) | 1999-01-26 |
| ZA961387B (en) | 1996-08-28 |
| TW293046B (en) | 1996-12-11 |
| SE9500702L (en) | 1996-08-28 |
| NO310886B1 (en) | 2001-09-10 |
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