WO2000071797A1 - Procede pour la production de fibres/filaments pour non-tisse ou fusion-soufflage, procede pour la production de feuilles, ainsi que fibres/filaments pour non-tisse ou fusion-soufflage, feuilles et tissu non tisse - Google Patents

Procede pour la production de fibres/filaments pour non-tisse ou fusion-soufflage, procede pour la production de feuilles, ainsi que fibres/filaments pour non-tisse ou fusion-soufflage, feuilles et tissu non tisse Download PDF

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Publication number
WO2000071797A1
WO2000071797A1 PCT/DE2000/001635 DE0001635W WO0071797A1 WO 2000071797 A1 WO2000071797 A1 WO 2000071797A1 DE 0001635 W DE0001635 W DE 0001635W WO 0071797 A1 WO0071797 A1 WO 0071797A1
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WO
WIPO (PCT)
Prior art keywords
substance
product
film
fiber
filaments
Prior art date
Application number
PCT/DE2000/001635
Other languages
German (de)
English (en)
Inventor
Joachim Bauer
Indra Roy
Original Assignee
Corovin Gmbh
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Corovin Gmbh filed Critical Corovin Gmbh
Priority to DE10081377T priority Critical patent/DE10081377D2/de
Priority to AU59623/00A priority patent/AU5962300A/en
Priority to EP00945550A priority patent/EP1187949B1/fr
Priority to AT00945550T priority patent/ATE299961T1/de
Priority to DE50010760T priority patent/DE50010760D1/de
Priority to DK00945550T priority patent/DK1187949T3/da
Publication of WO2000071797A1 publication Critical patent/WO2000071797A1/fr

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Classifications

    • 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
    • D04H1/70—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres characterised by the method of forming fleeces or layers, e.g. reorientation of fibres
    • D—TEXTILES; PAPER
    • D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
    • D01F—CHEMICAL FEATURES IN THE MANUFACTURE OF ARTIFICIAL FILAMENTS, THREADS, FIBRES, BRISTLES OR RIBBONS; APPARATUS SPECIALLY ADAPTED FOR THE MANUFACTURE OF CARBON FILAMENTS
    • D01F11/00—Chemical after-treatment of artificial filaments or the like during manufacture
    • D01F11/04—Chemical after-treatment of artificial filaments or the like during manufacture of synthetic polymers
    • 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
    • D04H1/54—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 by welding together the fibres, e.g. by partially melting or dissolving
    • D04H1/56—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 by welding together the fibres, e.g. by partially melting or dissolving in association with fibre formation, e.g. immediately following extrusion of staple fibres
    • 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
    • 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
    • D04H3/00—Non-woven fabrics formed wholly or mainly of yarns or like filamentary material of substantial length
    • D04H3/02—Non-woven fabrics formed wholly or mainly of yarns or like filamentary material of substantial length characterised by the method of forming fleeces or layers, e.g. reorientation of yarns or filaments
    • 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
    • D04H3/00—Non-woven fabrics formed wholly or mainly of yarns or like filamentary material of substantial length
    • D04H3/08—Non-woven fabrics formed wholly or mainly of yarns or like filamentary material of substantial length characterised by the method of strengthening or consolidating
    • D04H3/16—Non-woven fabrics formed wholly or mainly of yarns or like filamentary material of substantial length characterised by the method of strengthening or consolidating with bonds between thermoplastic filaments produced in association with filament formation, e.g. immediately following extrusion
    • 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
    • D06M23/00—Treatment of fibres, threads, yarns, fabrics or fibrous goods made from such materials, characterised by the process
    • D06M23/06—Processes in which the treating agent is dispersed in a gas, e.g. aerosols
    • 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
    • D06M23/00—Treatment of fibres, threads, yarns, fabrics or fibrous goods made from such materials, characterised by the process
    • D06M23/10—Processes in which the treating agent is dissolved or dispersed in organic solvents; Processes for the recovery of organic solvents thereof

Definitions

  • Process for producing spunbonded or meltblown fibers / fila ⁇ ients process for producing films and spunbonded or meltblown fibers / filaments, films, nonwoven
  • the invention relates to a method for producing products, in particular spunbonded or meltblown fibers / filaments, according to the preamble of claim 1.
  • Nonwovens For the production of chemical fibers using melt spinning technology, in particular spunbonded or meltblown fibers / filaments, polymers are usually used in the form of granules as the starting material, which are shaped into fibers / filaments by means of an extrusion process via suitable spinnerets and after targeted cooling in the production of Nonwovens can be processed in-line (e.g. spunbond, meltblown) or off-line (e.g. carded nonwovens) to form a nonwoven.
  • spunbond, meltblown meltblown
  • off-line e.g. carded nonwovens
  • an additional cooling (quench) liquid in the form of small drops (mist) can be sprayed onto the fibers / filaments after the molten polymer has emerged from the spinnerets are placed before the threads in the in-line nonwoven fabrication as a fiber / filament layer on a laying tape and then optionally a consolidation process z. B. be subjected to heat embossing or needling.
  • this form of process control offers (use of a quench liquid) the advantage that the fiber / filament cross-section is influenced favorably, the formation of fiber bundles is reduced and the formation of drops at the fiber ends can be suppressed.
  • An increased cooling rate in the production of continuous filaments is also advantageous.
  • a barrier effect of the formed nonwoven fabric against liquids is described in the first approximation by the Laplace equation and results for untreated spunbonded or meltblown fibers / filaments from the pore structure (pore size and pore shape) of the formed nonwoven fabric and the surface chemistry (interfacial tension) of the material ser / filament formation used polymer.
  • the barrier properties against liquid media can be specifically changed.
  • Additives are added to the polymer melt before the fibers / filaments are shaped.
  • the additives in the fibers / filaments formed are distributed over the fiber / filament cross section, with only a part of the additive influencing the surface chemistry (eg interfacial tension) of the fibers / filaments.
  • the proportion of the additive active on the surface can change due to migration from the fiber cross-section. This method offers the advantage that the entire fiber surface is reliably detected regardless of the pore size of the nonwoven fabric formed.
  • US Pat. No. 5,178,931 mentions the surface application of at least one substance for changing the surface properties of the nonwoven fibers, the application being carried out on the finished nonwoven fabric.
  • the substance is used in an amount sufficient to impart at least one property to the fibers of such a nonwoven that differs from the surface properties of untreated fibers.
  • a disadvantage of this process is that in the case of nonwovens, which in their entirety are said to have the changed surface properties, the entire structure of the product must be wetted with the liquid.
  • the carrier substance Following the wetting of the fleece, the carrier substance must be dried off safely and, if necessary, crosslinked with high energy input. This takes place in complex dryers so that a sufficient evaporation or crosslinking time is available.
  • the temperature in the ovens is limited by the limited temperature stability of the raw materials of the fleece.
  • the complex technology and slow processing speed are the reason for the high process costs of this equipment technology.
  • the object of the invention is to create a method and a device for producing a product in which a selected surface property of the product is changed uniformly on the surface, taking into account a fluid to be applied later in use of the product without an undesirable influence on the internal structure of the product and the associated influence on the product storage properties.
  • This object is achieved with a method with the features of claim 1, with a nonwoven fiber / filament with the features of claim 15, with a film with the features of claim 16 and with a device with the features of claims 25 and 26, respectively . Further developments and advantageous refinements result from the subclaims.
  • a product in which at least one polymer is processed as a starting liquid to form a melt liquid this is deposited as a layer through a nozzle as a melt polymer.
  • At least one substance that changes a surface property of the product is applied to the surface of the product in a period of time from product creation to product deposition.
  • a substance is used with which a barrier property of the product is increased, an interfacial tension of the product being reduced.
  • At least one substance which changes the surface properties of, for example, fibers / filaments also referred to as an additive
  • the substance before further processing e.g. is distributed over the entire surface of the fibers / filaments before nonwoven formation.
  • the application has no influence on the inner Structure of the polymer has and does not affect a spinning process.
  • the properties resulting from the polymer structure in the interior of the fibers / filaments or the film such as, for example, strength, extensibility and others, are retained.
  • suitable substances it is even possible to support such properties.
  • a substance can be applied that achieves a surface softness while reducing the interfacial tension, while the core of the product still has high strength values.
  • the fibers / filaments or the film are still close to their melting or softening temperature in the period between their formation and their deposition. In this state, they have a particularly good affinity or binding force on their surface for the substance supplied. This later results in better adhesion and durability of the substance on the surface of the fibers / filaments or the film.
  • this application of the substance allows the use of several substances to set different properties on the product.
  • the substances can be applied simultaneously, for example in the form of a mixture, or in succession.
  • Another advantage results from the small amount of substance that is required to obtain the desired surface properties of the fibers / filaments or the film. This primarily means inexpensive production.
  • the application of the substance within a period of time from the formation to the deposition of the fibers / filaments also has the advantage that desired surface properties of the fibers / filaments are considerably easier and more precise to set, regardless of the migration behavior of individual additives in different polymers.
  • this type of order allows the interfacial tension to be set in a defined manner depending on the area in which the product is used. If a fluid that comes into contact with the product later is known, the parameters attributable to this fluid, such as surface tension, are thus also known, at least approximately.
  • the desired interfacial tension on the product can be matched to the fluid in a precisely defined manner by applying a substance that increases the barrier property. This can be done by selecting the Concentration of the substance, the volume of the order and, for example, the surface wetting of the product surface with the substance can be achieved.
  • the definition of the interfacial tension can be set so precisely that it is possible that the surface of the product has an interfacial tension that has a difference of approximately 3 mN / m compared to an interfacial tension of a fluid subsequently wetting the surface. A difference between 3 mN / m and 5 mN / m is preferably set.
  • the difference can also be set so that it is between 10 mN / m and 20 mN / m.
  • the interfacial tension is between, for example, 25 mN / m and more than 60 mN / m at 20 ° C., the interfacial tension also being dependent on whether a pure polymer or a polymer mixture or one or more additives, for example as a batch in the molten liquid Phase before exiting the nozzle.
  • interfacial tensions existing as well as to be achieved and usable polymer materials, it is expressly referred to on Tables 1, 2 and 3, Chapter Vl / Page 524ff from “Polymer Handbook " / Publisher: Brandrup, Immergut, Grulke, Verlag John Wiley & Sons, 4th editions, 1999, the content of which is included here. It also shows that the interfacial tension can be significantly reduced by, for example, a fluorocarbon group or silicone group. Other substances with which the interface Tension can be set as desired in the "Handbook of Chemistry and Physics " / edited by Robert C. Weast, CRC Press, 68th edition, 1987.
  • an interfacial tension must be set below that of this fluid, thus below about 70 mN / m.
  • other fluids such as blood or saline solutions, however, their interfacial tension can also be much lower, for example around 40 mN / m.
  • the nature of the order allows, due to the accuracy as well as the leveling of the order, that the interfacial tension of the product can be set to, for example, 35 mN / m or 28 mN / m.
  • the error tolerance range can be set so that it is below 5%, preferably below 2.5%.
  • the application is preferably set in such a way that a surface is wetted which is proportionately more than 2%, in particular in a range between 5% and 85%.
  • a surface is wetted which is proportionately more than 2%, in particular in a range between 5% and 85%.
  • this can also be further shaped later, so that, for example, areas between 25% and 40% result in proportion to the end product.
  • the order is also selected depending on the mode of action of the substance. In doing so, variables such as molecular size, viscosity or other factors are included.
  • the uniformity of the application due to the method of production also allows the surface to be wetted with a substance in a range from about 2% to about 15% in order to achieve a sufficient reduction in the interfacial tension.
  • a further development provides that the substance is sprayed onto the surface of the fibers / filaments or the film. This ensures that the surface of the fibers / filaments or the film is evenly covered by the substance even when the substance is used in small quantities. It is further provided that the substance is applied unmixed as a solution or as a dispersion (emulsion / suspension / aerosol) or from the gas phase to the surface of the fibers / filaments or the film.
  • the solvent or dispersion medium is water.
  • the coolant evaporates after the wetting of the fibers / filaments or the film, and the substance contained in the coolant remains on the surface of the fibers / filaments or the film.
  • a further development provides that the coolant with the substance contained therein is sprayed in very fine droplets against the fibers / filaments or the film.
  • the droplets on impacting the fibers / filaments or the film have no undesirable negative influence on the fiber / filament or film structure, and that the coolant after wetting the fibers / filaments or the Film evaporates quickly.
  • the substance can be applied to the product at different heights along a product formation path, for example directly at the nozzle or in the case of nonwoven manufacture with stretching of the material after a stretching zone or also in this. It is also possible to choose a location for the application of the material depending on the temperature of the product.
  • the substance is preferably applied at a point in time at which the product has stored so much thermal energy that there is no need for subsequent drying of the product.
  • the product can also have a certain residual moisture content of below 10%, in particular in a range between 2.5% and 5%.
  • the fibers / filaments or the film are sprayed from different directions with the coolant and the substance contained therein.
  • the coolant and the substance can partly be introduced via nozzles against a direction of movement of the product, so that turbulence for an adequate distribution of the sub- punch ensures.
  • turbulence vortices are generated by means of corresponding constructive devices such as baffle plates, deflections and / or by means of a corresponding inflow of the coolant or another carrier medium for the substance in such a way that the substance is distributed evenly.
  • the substance can be supplied on one or more sides, in particular on two sides.
  • a further development provides that the wettability of the fibers / filaments or the film against wetting media, in particular water, alcohols, surfactants, lipids, organic solvents, proteins or against dissolved substances contained in wetting media is specifically adjusted by the substance. This makes it possible to set a barrier effect against liquids that is optimized for the respective application.
  • a nonwoven fabric becomes more permeable or impermeable to certain wetting media than the untreated nonwoven fabric under the same test conditions.
  • the permeability or its inverse value, the barrier effect depends on the test method used, in particular the Pressure difference of the medium loaded on the nonwoven and the residence time, depending. The same applies accordingly to porous foils.
  • substances can be applied to the fibers / filaments or the film, which evenly cover their surface and thereby make them less or more wettable compared to a wide range of wetting media compared to untreated fibers / filaments or films.
  • Dissolved substances contained in wetting media can undesirably change the wetting properties and thus the permeability or the barrier effect of the fibers / filaments or foils in comparison to the same media in pure form, that is to say without the dissolved substances.
  • the measure according to the invention also makes it possible to specifically change the effects on the wetting properties caused by the dissolved substances.
  • the fiber / filament layer can be solidified after application of the substance which changes the surface properties of the fibers / filaments to form a nonwoven.
  • the surface of the fibers / filaments is now uniform and uniform covered by additives.
  • the nonwoven has the desired surface chemistry throughout, ie also at the closely spaced intersections of the fibers / filaments.
  • the internal structure of the fibers / filaments and the resulting properties of the nonwoven, in particular its pore size, are not adversely affected.
  • the substance that changes the surface properties of the fibers / filaments is a pseudocationic fatty amide with a proportion of 4 percent by weight.
  • the nonwoven has a basis weight of 11.5 g / m 2 and a pore size of 16 ⁇ m.
  • the barrier effect of the nonwoven is not reduced by surfactant-containing ingredients dissolved in the water, which would be the case with an untreated nonwoven.
  • the nonwoven fabric or the film can be part of a two or more layered inline or offline composite made of further textile materials and / or films.
  • the wetting properties achieved and the resulting permeability and barrier effect for liquid media can also be used for other fabrics.
  • the combination with these textiles and / or foils can also lead to synergy effects with other properties, which can then be used for applications.
  • the nonwoven or the film is used in the hygiene industry as a barrier material, in particular as a textile backing in diapers, incontinence products or feminine hygiene products, in the textile industry, in particular as a material for protective clothing in the medical field and for drapes and Wipers, as a starting material for protective clothing in technical applications, as a barrier material for materials that are permeable to diffusion, in particular in the construction sector.
  • the breathable properties i.e. the barrier effect against liquid media and permeability for vaporous or gaseous media
  • the absorbency for media through increased wettability are used or, conversely, the absorbency for media through increased wettability.
  • the film material has, for example, polypropylene with chalk and / or a beta-nucleating agent.
  • the nucleating agent is preferably added in a concentration between 0.1 ppm to 100 ppm and extracted before stretching, in particular stretching the film.
  • other fillers can also be added to the thermoplastic film material.
  • FIG. 1 shows a schematic representation of the method according to the invention for producing (spunbonded or) meltblown
  • Fig. 2 is a schematic cross-sectional view of a fiber / filament with the substance applied to the surface
  • Fig. 3 shows a nonwoven manufacturing device.
  • the schematically illustrated process is optimized here especially for a meltblown process. However, it is also suitable for the spunbonded nonwoven process or, with minor modifications, for the film process.
  • a device 18 for producing the melt 6 from polymers 4, one or more (spinning or) meltbown nozzles 8 (here for the sake of clarity) is used to produce (spunbonded or) meltblown fibers / filaments as product 2 individual nozzle shown) with capillary openings 20, air nozzles 22, a laying tape 12 and a spraying device 24, which is preceded by a dissolving or dispersing device 26 in which the substance 14 and the solvent or dispersion medium 16 can be mixed with one another.
  • polymers 4 are usually used in the form of granules as the starting material. This polymer granulate 4 is processed in a device 18 to form a melt 6, from which the fibers / filaments 2 for forming the nonwoven fabric are produced via spinning or meltblown nozzles 8.
  • melt drops 28 emerge from the capillary openings 20 of the nozzle 8, to which a sharp air flow is directed from the air nozzles 22, which produces threads (fibers / filaments) 2 from the melt drops 28.
  • the fibers / filaments 2 formed from the (spinning or) meltblown nozzles 8 are laid on a laying tape 12 as fiber or Filament layer 10 deposited. If appropriate, this filament layer 10 is subjected to a suitable consolidation process.
  • At least one substance 14 which changes the surface properties of the fibers / filaments 2 is now applied to the surface of the fibers / filaments 2, specifically within a period of time from the point in time until the fibers / filaments 2 are deposited as fibers / filament layer 10.
  • the substance 14 is either unmixed, as a solution or as a dispersion, preferably sprayed onto the surface of the fibers / filaments 2 by means of a spray device 24. If the substance 14 is sprayed in the form of a solution or dispersion, the substance 14 is mixed beforehand in the dissolving and dispersing device 26 with the solvent or dispersion medium 16.
  • One possibility of applying substance 14 to fibers / filaments 2 with the least possible technical outlay is to add substance 14 to a coolant sprayed to cool the fibers / filament mass. Accordingly, the coolant then represents the solvent or dispersant 16.
  • the substance 14 is mixed with the coolant 16 via the dissolving or dispersing device 26 and introduced into the fibers / filaments jet 2 via the spraying device 24.
  • the coolant 16 and the substance 14 contained therein uniformly wet the surface of the fibers / filaments 2, the coolant 16 evaporating and the substance 14 remaining on the surface of the fibers / filaments 2.
  • the spraying device and the number of spraying devices 24 are varied depending on the type of process used, the polymer 4 and the substance 14 to be applied in such a way that optimal wetting of the fibers / filaments 2 and, as a result, a uniform distribution of the substance 14 the entire surface of the fibers / filaments 2 takes place.
  • the spraying device 24 is preferably adjustable in height.
  • a jet applied from the spraying device 24 for wetting the fibers / filaments 2 is preferably applied via a nozzle bar.
  • the shape of the nozzle itself can be slit, cross or circular.
  • a variable nozzle geometry is preferably also selected in order in this way to apply the jet to the to be able to adapt the respective process.
  • substance 14 depends on the desired surface property of the fibers / filaments 2.
  • substances 14 are selected which determine the wettability of the fibers / filaments 2 or the finished spunbonded fabric or meltblown compared to certain wetting media such as water, alcohol, Adjust surfactants, lipids, organic solvents, proteins etc. ie specifically affect the barrier effect against the liquids in question.
  • FIG. 2 schematically shows the cross section of a fiber / filament 2, on the surface of which at least one substance 14 which changes the surface properties of the fiber / filament 2 is applied.
  • This substance 14 is applied evenly over the entire surface of the fiber / filament 2. example
  • a polypropylene granulate (manufacturer Himont, Grade Valtec HH442H, MFI 800 manufacturer's specification) was used.
  • a standard meltblow nozzle (manufacturer Accurate Products) was used.
  • the extrusion and spinning temperatures were in the range usual for PP as well as air temperature and quantities.
  • the cooling of the fibers was supported by adding a quench liquid.
  • the fleece produced has a weight of 11.5 g / m 2 .
  • the product properties are listed in Table 1.
  • the fleece produced also has a weight of 11.5 g / m 2 .
  • the product properties are listed in Table 1.
  • This material was produced analogously to fleece 1.
  • an additive pseudocationic fatty amide, grade BK2047FL, manufacturer Henkel KGaA was added to the quench liquid, so that the nonwoven is equipped with 4 percent by weight on the nonwoven.
  • the fleece produced also has a weight of 11.5 g / m 2 .
  • the product properties are listed in Table 1,
  • Fleece 3 shows no change in pore size due to the surface application of the additive.
  • the measured values according to (b) demonstrate an increased barrier effect of the fleece 2 compared to fleece 1 due to the addition of the additive to the melt, despite the enlarged pore diameter.
  • FIG. 3 shows a nonwoven manufacturing device 30, which also produces meltblown fibers 32, which are deposited on a sieve 34.
  • the screen 34 is transported further in accordance with the direction of the arrow.
  • the device 30 has an encapsulation 36. This preferably surrounds the meltblown fibers 32 not only in the area where the substance 14 is applied, but also, as shown, beyond.
  • the substance 14 can be supplied additionally or only exclusively via the air nozzles 22, indicated by the arrows.
  • a two-sided substance supply 38 is shown.
  • a carrier 40 and / or the substance 14 is conditioned, for example tempered, by means 40 for setting a fluid state of a fluid supply 42 indicated by arrows. pressurized, mixed, etc.
  • the fluid supply 42 also allows metering of the fluid flow flowing into the encapsulation, for example depending on the setting of certain turbulent flow conditions.
  • a secondary air inflow to the meltblown fibers 32 can be controlled or regulated in this way via a fan.
  • the substance can also be supplied by means of high pressure, ie a pressure which is higher than that of the air flowing out of the air nozzles 22, for example 80 bar and more.
  • the encapsulation 36 itself can, however, also have corresponding ventilation slots into the surroundings, through which the necessary secondary air can be drawn in. By appropriate selection of the arrangement of the ventilation slots, for example depending on the fluid supply 42 and / or substance supply 38, this is preferably done automatically.
  • flow distribution means such as the flow guide plates 44 shown can be present in the interior of the encapsulation 36.
  • the substance 14 and / or the carrier fluid can be conducted and swirled in such a way that the surface of the meltblown fibers 32 is applied uniformly.
  • the substance 14 can preferably also be passed through the meltblown fibers 32 one or more times with these flow distribution means.
  • the substance supply 38 can also be arranged at different locations, either individually or in addition.
  • the substance supply is preferably in its Angularity adjustable so that the substance 14 can also be introduced into the encapsulation 36 against the flow direction of the meltblown fibers 32.
  • the encapsulation 36 itself has, for example, a conical shape or an hourglass shape.
  • an encapsulation 36 which detects a stretching zone of the meltblown fiber after it has emerged from the nozzle.
  • the encapsulation is between 5 and 10 centimeters long.
  • a fan is preferably arranged below the sieve 34, which generates a negative pressure in the encapsulation 26. As a result, the fluids flowing in and through the encapsulation are laminarized.
  • Nonwovens such as films described in this way are used in the hygiene industry as a barrier material, for example as a textile backing in diapers, incontinence products or feminine hygiene products, in the textile industry for example as a material for protective clothing in the medical sector, for example as a material for drapes and wipes or also as a starting material for protective clothing in the technical fields of application as barrier material for materials that are open to diffusion, for example in the construction sector, but in each case not restricted to the examples mentioned in the respective segment and also not restricted to the segments.
  • Inline / off-line combinations with other materials such as other spunbonded fabrics, meltblowns, foils, textile materials in the white test senses, tissues, etc.

Abstract

L'invention concerne un procédé pour la production d'un produit, en particulier de fibres/filaments pour non-tissé ou fusion-soufflage. Dans le procédé selon l'invention, on applique au moins une substance modifiant les caractéristiques de surface des fibres/filaments à la surface des fibres/filaments, et ce pendant un intervalle de temps allant de la création au dépôt des fibres/filaments.
PCT/DE2000/001635 1999-05-21 2000-05-18 Procede pour la production de fibres/filaments pour non-tisse ou fusion-soufflage, procede pour la production de feuilles, ainsi que fibres/filaments pour non-tisse ou fusion-soufflage, feuilles et tissu non tisse WO2000071797A1 (fr)

Priority Applications (6)

Application Number Priority Date Filing Date Title
DE10081377T DE10081377D2 (de) 1999-05-21 2000-05-18 Verfahren zur Herstellung von Spinnvlies- oder Meltblown-Fasern/Filamenten, Verfahren zur Herstellung von Folien sowie Spinnvlies- oder Meltblown-Fasern/Filamente, Folien, Vliesstoff
AU59623/00A AU5962300A (en) 1999-05-21 2000-05-18 Method for the production of spunbonded or melt blown fibers/filaments, method for the production of foils and spundbonded or melt blown fibers/filaments, foilsand nonwoven fabric
EP00945550A EP1187949B1 (fr) 1999-05-21 2000-05-18 Procede pour la production de fibres/filaments pour non-tisse ou fusion-soufflage, procede pour la production de feuilles, ainsi que fibres/filaments pour non-tisse ou fusion-soufflage, feuilles et tissu non tisse
AT00945550T ATE299961T1 (de) 1999-05-21 2000-05-18 Verfahren zur herstellung von spinnvlies- oder meltblown-fasern/filamenten, verfahren zur herstellung von folien sowie spinnvlies- oder meltblown-fasern/filamente, folien, vliesstoff
DE50010760T DE50010760D1 (de) 1999-05-21 2000-05-18 Verfahren zur herstellung von spinnvlies- oder meltblown-fasern/filamenten, verfahren zur herstellung von folien sowie spinnvlies- oder meltblown-fasern/filamente, folien, vliesstoff
DK00945550T DK1187949T3 (da) 1999-05-21 2000-05-18 Fremgangsmåde til fremstilling af spunbonded vlies- eller meltblown-fibre/filamenter, fremgangsmåde til fremstilling af folier samt spunbonded vlies- eller meltblown-fibre/filamenter, folier, vliesstof

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19923344.6 1999-05-21
DE19923344A DE19923344A1 (de) 1999-05-21 1999-05-21 Verfahren zur Herstellung von Spinnvlies- oder Meltblown-Fasern/Filamenten, Verfahren zur Herstellung von Folien sowie Spinnvlies- oder Metlblown-Fasern/Filamente, Folien, Vliesstoff

Publications (1)

Publication Number Publication Date
WO2000071797A1 true WO2000071797A1 (fr) 2000-11-30

Family

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Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/DE2000/001635 WO2000071797A1 (fr) 1999-05-21 2000-05-18 Procede pour la production de fibres/filaments pour non-tisse ou fusion-soufflage, procede pour la production de feuilles, ainsi que fibres/filaments pour non-tisse ou fusion-soufflage, feuilles et tissu non tisse

Country Status (7)

Country Link
EP (1) EP1187949B1 (fr)
AT (1) ATE299961T1 (fr)
AU (1) AU5962300A (fr)
DE (3) DE19923344A1 (fr)
DK (1) DK1187949T3 (fr)
ES (1) ES2245942T3 (fr)
WO (1) WO2000071797A1 (fr)

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7291300B2 (en) 2003-06-30 2007-11-06 The Procter & Gamble Company Coated nanofiber webs
US8395016B2 (en) 2003-06-30 2013-03-12 The Procter & Gamble Company Articles containing nanofibers produced from low melt flow rate polymers
US8487156B2 (en) 2003-06-30 2013-07-16 The Procter & Gamble Company Hygiene articles containing nanofibers
US9464369B2 (en) 2004-04-19 2016-10-11 The Procter & Gamble Company Articles containing nanofibers for use as barriers
US9663883B2 (en) 2004-04-19 2017-05-30 The Procter & Gamble Company Methods of producing fibers, nonwovens and articles containing nanofibers from broad molecular weight distribution polymers
CN110523271A (zh) * 2019-09-09 2019-12-03 厦门当盛新材料有限公司 建筑内饰材料及其制备方法
CN111423660A (zh) * 2020-04-28 2020-07-17 青岛中孚科力橡塑有限公司 一种扩融驻极抗菌母料及加工工艺、用途
CN112981713A (zh) * 2021-02-09 2021-06-18 湖北荣发卫生用品股份有限公司 Sms无纺布及其生产线及其生产方法

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EP1489929B1 (fr) * 2002-04-03 2005-07-20 Filtrona Richmond, Inc. Procede et appareil permettant d'incorporer un additif a des produits fibreux et produits en resultant
US7291263B2 (en) 2003-08-21 2007-11-06 Filtrona Richmond, Inc. Polymeric fiber rods for separation applications
US7290668B2 (en) 2004-03-01 2007-11-06 Filtrona Richmond, Inc. Bicomponent fiber wick
CA2738087A1 (fr) * 2008-09-22 2010-03-25 Patrick D. Kincaid Produits fibreux et procedes de fabrication
EP2572019A2 (fr) 2010-05-21 2013-03-27 Fiberweb Corovin GmbH Produit polymère extrudé et son procédé de fabrication
CN111996606B (zh) * 2020-09-01 2021-12-14 上海邀加科技有限公司 液/固态添加剂在熔喷法非织造工艺中的添加方法和设备

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US3959421A (en) * 1974-04-17 1976-05-25 Kimberly-Clark Corporation Method for rapid quenching of melt blown fibers
US4814099A (en) * 1988-05-03 1989-03-21 Kimberly-Clark Corporation Incorporating detergent into a meltblown laundry detergent sheet via the meltblowing quench spray
EP0550029A1 (fr) * 1991-12-31 1993-07-07 Kimberly-Clark Corporation Tissu conducteur et son procédé de préparation
US5665278A (en) * 1996-01-17 1997-09-09 J & M Laboratories, Inc. Airless quench method and apparatus for meltblowing
DE19843933A1 (de) * 1998-09-25 2000-03-30 Irema Filter Gmbh Vorrichtung und Verfahren zur Herstellung eines Spinnvlieses

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3959421A (en) * 1974-04-17 1976-05-25 Kimberly-Clark Corporation Method for rapid quenching of melt blown fibers
US4814099A (en) * 1988-05-03 1989-03-21 Kimberly-Clark Corporation Incorporating detergent into a meltblown laundry detergent sheet via the meltblowing quench spray
EP0550029A1 (fr) * 1991-12-31 1993-07-07 Kimberly-Clark Corporation Tissu conducteur et son procédé de préparation
US5665278A (en) * 1996-01-17 1997-09-09 J & M Laboratories, Inc. Airless quench method and apparatus for meltblowing
DE19843933A1 (de) * 1998-09-25 2000-03-30 Irema Filter Gmbh Vorrichtung und Verfahren zur Herstellung eines Spinnvlieses

Cited By (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7291300B2 (en) 2003-06-30 2007-11-06 The Procter & Gamble Company Coated nanofiber webs
US8395016B2 (en) 2003-06-30 2013-03-12 The Procter & Gamble Company Articles containing nanofibers produced from low melt flow rate polymers
US8487156B2 (en) 2003-06-30 2013-07-16 The Procter & Gamble Company Hygiene articles containing nanofibers
US8835709B2 (en) 2003-06-30 2014-09-16 The Procter & Gamble Company Articles containing nanofibers produced from low melt flow rate polymers
US9138359B2 (en) 2003-06-30 2015-09-22 The Procter & Gamble Company Hygiene articles containing nanofibers
US10206827B2 (en) 2003-06-30 2019-02-19 The Procter & Gamble Company Hygiene articles containing nanofibers
US9464369B2 (en) 2004-04-19 2016-10-11 The Procter & Gamble Company Articles containing nanofibers for use as barriers
US9663883B2 (en) 2004-04-19 2017-05-30 The Procter & Gamble Company Methods of producing fibers, nonwovens and articles containing nanofibers from broad molecular weight distribution polymers
CN110523271A (zh) * 2019-09-09 2019-12-03 厦门当盛新材料有限公司 建筑内饰材料及其制备方法
CN111423660A (zh) * 2020-04-28 2020-07-17 青岛中孚科力橡塑有限公司 一种扩融驻极抗菌母料及加工工艺、用途
CN112981713A (zh) * 2021-02-09 2021-06-18 湖北荣发卫生用品股份有限公司 Sms无纺布及其生产线及其生产方法

Also Published As

Publication number Publication date
DE50010760D1 (de) 2005-08-25
ATE299961T1 (de) 2005-08-15
ES2245942T3 (es) 2006-02-01
DE10081377D2 (de) 2002-05-29
DE19923344A1 (de) 2000-11-23
DK1187949T3 (da) 2005-10-31
EP1187949B1 (fr) 2005-07-20
EP1187949A1 (fr) 2002-03-20
AU5962300A (en) 2000-12-12

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