EP1896635B1 - Procede pour la production de non-tisses - Google Patents

Procede pour la production de non-tisses Download PDF

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Publication number
EP1896635B1
EP1896635B1 EP20060754593 EP06754593A EP1896635B1 EP 1896635 B1 EP1896635 B1 EP 1896635B1 EP 20060754593 EP20060754593 EP 20060754593 EP 06754593 A EP06754593 A EP 06754593A EP 1896635 B1 EP1896635 B1 EP 1896635B1
Authority
EP
European Patent Office
Prior art keywords
process according
fibres
die
spinning solution
water
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.)
Not-in-force
Application number
EP20060754593
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German (de)
English (en)
Other versions
EP1896635A1 (fr
Inventor
Ebeling Horst
Hans-Peter Fink
Michael Doss
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Fraunhofer Gesellschaft zur Foerderung der Angewandten Forschung eV
Original Assignee
Fraunhofer Gesellschaft zur Foerderung der Angewandten Forschung eV
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Publication of EP1896635A1 publication Critical patent/EP1896635A1/fr
Application granted granted Critical
Publication of EP1896635B1 publication Critical patent/EP1896635B1/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
    • 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
    • D04H3/10—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 yarns or filaments made mechanically
    • D—TEXTILES; PAPER
    • D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
    • D01D—MECHANICAL METHODS OR APPARATUS IN THE MANUFACTURE OF ARTIFICIAL FILAMENTS, THREADS, FIBRES, BRISTLES OR RIBBONS
    • D01D5/00—Formation of filaments, threads, or the like
    • D01D5/06—Wet spinning methods
    • D—TEXTILES; PAPER
    • D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
    • D01D—MECHANICAL METHODS OR APPARATUS IN THE MANUFACTURE OF ARTIFICIAL FILAMENTS, THREADS, FIBRES, BRISTLES OR RIBBONS
    • D01D5/00—Formation of filaments, threads, or the like
    • D01D5/12—Stretch-spinning methods
    • D01D5/14—Stretch-spinning methods with flowing liquid or gaseous stretching media, e.g. solution-blowing
    • 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
    • D01F2/00—Monocomponent artificial filaments or the like of cellulose or cellulose derivatives; Manufacture thereof
    • D01F2/24—Monocomponent artificial filaments or the like of cellulose or cellulose derivatives; Manufacture thereof from cellulose derivatives
    • 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
    • D04H3/015—Natural 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
    • D04H3/02—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
    • D04H3/03—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 at random
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T442/00—Fabric [woven, knitted, or nonwoven textile or cloth, etc.]
    • Y10T442/60—Nonwoven fabric [i.e., nonwoven strand or fiber material]
    • Y10T442/68—Melt-blown nonwoven fabric

Definitions

  • the invention relates to a process for producing nonwovens, in which a solution of cellulose carbamate in N-methylmorpholine-N-oxide is forced through the holes of a nozzle beam and is stretched many times by an air flow.
  • the formed fiber curtain is placed on a perforated conveyor belt, washed and dried.
  • Nonwovens are textile fabrics in which the surface formation does not take place by weaving or knitting, but by entanglement of the fibers with subsequent fixation. Nonwovens still have high annual growth rates due to their versatility and comparatively low production costs compared to knitted and woven fabrics.
  • nonwoven materials are a high moisture absorption, the manufacturing processes allow a high variability in density and thickness and lead to a broad surface isotropy. From these advantageous properties, numerous uses in medicine for hygiene products, e.g. Surgical drapes, sheets, gauze, etc., household wipes and decorative non-wovens, e.g. Tablecloths, napkins, in the garment industry as interlining nonwovens as well as for technical applications, e.g. Insulating mats, cover mats.
  • web formation is possible from short fibers, staple fibers or continuous filaments.
  • the pile formation for cut fibers is carried out by the dry or wet nonwoven method.
  • the staple fibers delivered in bale form are combed by means of carding or carding to fleece and stored on a tape.
  • the pile formation takes place by applying a suspension of fiber and water to a perforated screen belt with subsequent squeezing of the water.
  • the webs formed can then be further consolidated by needling, thermal and / or chemical treatment or by means of water jet.
  • Nonwovens of continuous materials are preferably made of polyester and polypropylene (meltblown - meltblown nonwovens) and polyacrylonitrile (Wet spiders - spunlaid nonwovens).
  • Viscose fibers i. Celluloseregeneratfasern
  • Nonwovens based on cellulose regenerated fiber have a significant market share due to their potential properties with expected continuous growth.
  • meltblowing is also claimed for solutions of cellulose in amine oxides, preferably N-methylmorpholine-N-oxide (NMMO).
  • NMMO N-methylmorpholine-N-oxide
  • Another known, environmentally friendly process for the production of cellulosic fibers and moldings is based on the precipitation of cellulose carbamate from a solution of this cellulose derivative in sodium hydroxide (EP 57 105 . EP 178 292 ).
  • Cellulose carbamate is formed in the reaction of cellulose with urea at elevated temperature and can be dissolved in cold dilute sodium hydroxide solution.
  • the WO 88/05090 relates to a nonwoven fabric whose fibers are capable of bonding to other fibers, the fibers being formed of cellulose carbamate.
  • WO 2005/080661 From the WO 2005/080661 is a process for the production of nonwovens is known in which a lyotropic solution of cellulose carbamate in N-methylmorpholine-N-oxide (NMMNO) is spun by extrusion through a multi-orifice-containing nozzle bar via an air gap in a precipitation bath to form several endless filaments, which be swirled by flowing with gaseous medium and / or fluid.
  • NMMNO N-methylmorpholine-N-oxide
  • the concerns WO 2005/080661 Such nonwovens and their use.
  • this object is achieved by a melt-blowing process in which a spinning solution is pressed at elevated temperature through a nozzle block, the fibers emerging from the nozzle holes are drawn through a tempered air stream and thereby stretched and cooled and coagulated by spraying with water. Subsequently, the fibers are deposited on a transport device to form a random fabric, wherein the individual fibers are self-binding. The solvent is then removed by washing.
  • a special feature of the process is that a solution of cellulose carbamate in N-methylmorpholine-N-oxide is used as the spinning solution.
  • nonwovens can be produced with higher strength and higher water absorption compared to cellulose, which make these nonwovens particularly suitable for use in sanitary articles for medicine, for household articles but also as decorative nonwovens.
  • the nozzle block used preferably has at least 20, preferably 150 to 1500 and particularly preferably 500 to 1000 nozzle holes per meter of nozzle width.
  • diameters of 0.05 to 1 mm and especially of 0.3 to 0.5 mm are preferred.
  • the spinning solution temperature in the extrusion is preferably in the range between 80 and 130 ° C, particularly preferably in the range of 90 to 110 ° C.
  • the spinning solution delivery rate is between 0.25 to 2.5, more preferably 0.75 to 1.5 g per nozzle hole and minute.
  • the air stream used for the removal of the fibers from the nozzle is preferably heated to 100 to 190 ° C, particularly preferably an air temperature of 120 to 160 ° C is set in the nozzle interior.
  • the pressure generated by the air flow inside the nozzle is preferably from 3 to 150 MPa (0.03 to 1.5 bar), especially preferably between 15 and 80 MPa (0.15 and 0.8 bar).
  • the nozzle exit velocity is preferably 1 to 20 m / min, but more preferably 3 to 10 m / min. Due to the adjacent stream of hot air, the extruded filaments are preferably drawn to 50 to 800 times their length after the nozzle exit, resulting in spinning speeds of up to 10,000 m / min.
  • Single fiber diameter significantly smaller than 10 ⁇ m and single fiber titer smaller than 1 dtex can be achieved by the appropriate adjustment of the stretching conditions.
  • the fibrous web which forms is sprayed with water or with a NMMO / water mixture having an NMMO content of preferably at most 20%, preferably 5 to 15%, and thus coagulated.
  • the batt is laid down on a perforated belt at high speed, which causes the fiber to become entangled and forms a batt having such good mechanical properties that subsequent operations such as washing with a high pressure water jet, squeezing and drying can be performed without additional solidification of the web.
  • the spinning solution contains from 5 to 20% by weight of cellulose carbamate.
  • the spinning solution contains 20 to 30 wt .-% cellulose carbamate. In the latter case, this gives a solution of cellulose carbamate in NMMO, which surprisingly has a lyotropic behavior, ie the cellulose carbamate is in a liquid crystalline state. This results in the particularly advantageous application that the molecules are aligned almost perfectly in the fiber direction during spinning due to the shear in the nozzle channel, whereby the fibers have an extremely high orientation and thus a very high strength.
  • a cellulose carbamate nonwoven fabric can thus be provided from a random knitted fabric or from a finite length of fibers resulting from the breakage of single capillaries.
  • the nonwoven fabrics produced by the claimed process preferably have basis weights between 20 and 500 g / m 2 preferably have a water retention capacity of at least 180% and after conditioning longitudinal strengths of at least 350 N / m and in the transverse direction of at least 120 N / m at a Basis weight of 33 g / m 2 .
  • the nonwoven fabrics according to the invention are preferably used in medicine, in particular as surgical drapes, bed sheets, wound coverings, gauze or cotton wool pads. Likewise, the nonwovens are also used as hygiene substances or as wipes in the home. Another field of application of the nonwovens according to the invention are decorative nonwovens, in particular tablecloths, napkins or curtains, as well as interlayer nonwovens in the clothing industry.
  • the cellulose carbamate is used in an amount that allows a lyotropic solution as described above, it is also possible to use the nonwoven fabrics according to the invention as a reinforcing material.
  • cellulose carbamate 180 g of cellulose carbamate (DP-Cuen 453) are mixed in a kneader with 2430 g of a 50% aqueous NMMO solution, this solution is concentrated by distilling off water at a vacuum of 8 MPa (80 mbar) to the NMMO monohydrate and the Cellulose carbamate dissolved.
  • the formed spinning solution has a cellulose carbamate content of 12%.
  • the spinning solution at a temperature of 90 ° C is filtered through a 50 micron filter and pressed by spin pump through a 15 cm wide nozzle with 60 nozzle holes diameter 0.48 mm with a flow rate of 0.9 g / hole / min.
  • the fibers emerging from the nozzle holes at a speed of 4 m / min are drawn by passing air heated to 125 ° C to 459 times their length, with a mixture of 7.5% NMMO / 92.5% water about 20 cm below sprayed the nozzle and deposited on a conveyor belt at a speed of 1 m / min, the formed web is washed with a sharp jet of water, squeezed off and dried under tension with the admission of a shrinkage of 12%.
  • PHK pulp 150 g of PHK pulp (DP-Cuen 840) are mixed in a kneader with 1945 g of a 50% aqueous NMMO solution, this solution by distilling off water at a vacuum of 8 MPa (80 mbar) to the NMMO mono- hydrate concentrated while the pulp dissolved.
  • the spinning solution formed has a cellulose content of 8%.
  • the spinning solution at a temperature of 90 ° C is filtered through a 50 micron filter and pressed by spin pump through a 15 cm wide nozzle with 60 nozzle holes diameter 0.48 mm with a flow rate of 0.9 g / hole / min.
  • the fibers emerging from the nozzle holes at a speed of 4 m / min are drawn by passing air heated to 125 ° C to 459 times their length, with a mixture of 7.5% NMMO / 92.5% water about 20 cm below the nozzle sprayed and deposited on a conveyor belt at a speed of 1 m / min.
  • the formed web is washed with a sharp jet of water, squeezed off and dried under tension with the admission of a shrinkage of 12%.

Landscapes

  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • General Chemical & Material Sciences (AREA)
  • Nonwoven Fabrics (AREA)
  • Spinning Methods And Devices For Manufacturing Artificial Fibers (AREA)
  • Artificial Filaments (AREA)

Claims (19)

  1. Procédé de fabrication de non-tissés selon le procédé d'extrusion-soufflage, dans lequel :
    - une solution de filage est pressée à température élevée à travers un bloc de filière,
    - les fibres sortant du bloc de filière sont soumises à l'écoulement d'un flux d'air tempéré, ce qui entraîne un étirage des fibres avec un refroidissement consécutif,
    - les fils sont coagulés par pulvérisation avec de l'eau,
    - les fibres sont déposées sur un dispositif de transport en formant un non-tissé à fibres emmêlées, et
    - le solvant est éliminé par lavage,
    caractérisé en ce que,
    comme solution de filage, on utilise une solution de carbamate de cellulose dans de la N-méthylmorpholine-N-oxyde.
  2. Procédé selon la revendication 1,
    caractérisé en ce que le bloc de filière présente au moins 20, en particulier 150 à 1500 orifices de filière par mètre.
  3. Procédé selon l'une quelconque des revendications précédentes,
    caractérisé en ce que le diamètre des orifices de filière est de 0,05 à 1 mm.
  4. Procédé selon l'une quelconque des revendications précédentes,
    caractérisé en ce que la température de la solution de filage dans la filière est de 80 à 130 °C.
  5. Procédé selon l'une quelconque des revendications précédentes,
    caractérisé en ce que le débit de solution de filage est de 0,25 à 1,5 g par orifice de filière et par minute.
  6. Procédé selon l'une quelconque des revendications précédentes,
    caractérisé en ce que le flux d'air présente une température de 100 à 190 °C.
  7. Procédé selon l'une quelconque des revendications précédentes,
    caractérisé en ce que le flux d'air établit dans la filière une pression de 3 à 150 MPa (0,03 à 1,5 bar).
  8. Procédé selon l'une quelconque des revendications précédentes,
    caractérisé en ce que la vitesse de sortie des fibres de la filière est de 1 à 20 m/min.
  9. Procédé selon l'une quelconque des revendications précédentes,
    caractérisé en ce que les fils sont étirés par le flux d'air d'un facteur de 50 à 800.
  10. Procédé selon l'une quelconque des revendications précédentes,
    caractérisé en ce que la vitesse de filage se situe dans la plage de 150 à 10 000 m/min.
  11. Procédé selon l'une quelconque des revendications précédentes,
    caractérisé en ce que les fibres présentent un diamètre d'au maximum 20 µm.
  12. Procédé selon l'une quelconque des revendications précédentes,
    caractérisé en ce que les fibres présentent une finesse d'au maximum 2,5 dtex.
  13. Procédé selon l'une quelconque des revendications précédentes,
    caractérisé en ce que de l'eau ou un mélange de N-méthylmorpholine N-oxyde et d'eau est pulvérisé sur les fibres au moins 10 cm en dessous de la filière.
  14. Procédé selon l'une quelconque des revendications précédentes,
    caractérisé en ce que le mélange contient 0,5 à 20 % en poids de N-méthylmorpholine-N-oxyde.
  15. Procédé selon l'une quelconque des revendications précédentes,
    caractérisé en ce que les fibres sont déposées sur une bande de transport perforée.
  16. Procédé selon l'une quelconque des revendications précédentes,
    caractérisé en ce que le lavage se fait par un jet d'eau sous haute pression.
  17. Procédé selon l'une quelconque des revendications précédentes,
    caractérisé en ce que le non-tissé est mis sous pression et/ou séché après le lavage.
  18. Procédé selon l'une quelconque des revendications précédentes,
    caractérisé en ce que la solution de filage contient 5 à 20 % en poids de carbamate de cellulose.
  19. Procédé selon l'une quelconque des revendications précédentes,
    caractérisé en ce que la solution de filage contient 20 à 30 % en poids de carbamate de cellulose.
EP20060754593 2005-06-27 2006-06-27 Procede pour la production de non-tisses Not-in-force EP1896635B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102005029793A DE102005029793B4 (de) 2005-06-27 2005-06-27 Vliesstoffe, Verfahren zu deren Herstellung sowie deren Verwendung
PCT/EP2006/006204 WO2007000319A1 (fr) 2005-06-27 2006-06-27 Non-tisses, procede pour leur production et leur utilisation

Publications (2)

Publication Number Publication Date
EP1896635A1 EP1896635A1 (fr) 2008-03-12
EP1896635B1 true EP1896635B1 (fr) 2011-09-28

Family

ID=36975523

Family Applications (1)

Application Number Title Priority Date Filing Date
EP20060754593 Not-in-force EP1896635B1 (fr) 2005-06-27 2006-06-27 Procede pour la production de non-tisses

Country Status (6)

Country Link
US (1) US20080287025A1 (fr)
EP (1) EP1896635B1 (fr)
JP (1) JP2008546928A (fr)
AT (1) ATE526438T1 (fr)
DE (1) DE102005029793B4 (fr)
WO (1) WO2007000319A1 (fr)

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AT503625B1 (de) 2006-04-28 2013-10-15 Chemiefaser Lenzing Ag Wasserstrahlverfestigtes produkt enthaltend cellulosische fasern
EP2160277A2 (fr) 2007-06-25 2010-03-10 Netstal-Maschinen AG Dispositif et procédé pour le refroidissement secondaire de préformes
AT505621B1 (de) 2007-11-07 2009-03-15 Chemiefaser Lenzing Ag Vefahren zur herstellung eines wasserstrahlverfestigten produktes enthaltend cellulosische fasern
DE102008018746A1 (de) 2008-04-14 2009-10-15 Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V. Cellulosecarbamat-Spinnlösung, Verfahren zur Herstellung eines Cellulosecarbamat-Vliesstoffes, Cellulosecarbamat-Vliesstoff sowie Verwendungszwecke
DE102008018743A1 (de) * 2008-04-14 2009-10-22 Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V. Cellulosecarbamat-Spinnlösung, Cellulosecarbamatfaser sowie Verfahren zu deren Herstellung und Verwendungszwecke
DE102008018745A1 (de) 2008-04-14 2009-10-15 Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V. Cellulosecarbamat-Spinnlösung, Cellulosecarbamat-Blasfolie sowie Verfahren zu deren Herstellung und Verwendungsmöglichkeiten
TWI392781B (zh) * 2009-12-31 2013-04-11 Preparation of Natural Cellulose Nonwoven by Wet Spunbond Method
TWI392780B (zh) * 2009-12-31 2013-04-11 Wet melt with a mold, antibacterial and deodorant function of cellulose non-woven system
TWI392779B (zh) * 2009-12-31 2013-04-11 A method for preparing natural cellulose nonwoven fabric by wet meltblowing
CN102127840B (zh) * 2010-01-13 2014-07-16 聚隆纤维股份有限公司 使用湿式纺黏方式制备天然纤维素不织布的方法
CN102127842B (zh) * 2010-01-13 2014-07-16 聚隆纤维股份有限公司 使用湿式熔喷方式制备天然纤维素不织布的方法
AT511002A1 (de) * 2011-02-08 2012-08-15 Univ Innsbruck Verfahren zur verformung von cellulosecarbamat und produkte, die nach diesem verfahren hergestellt werden
DE102013210432A1 (de) * 2013-06-05 2014-12-11 Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V. Verfahren zur Herstellung eines Polyacryl-basierten Vliesstoffes sowie Polyacryl-basierte Vliesstoffe
EP3385426A1 (fr) * 2017-04-03 2018-10-10 Lenzing Aktiengesellschaft Tissu de fibres de cellulose non tissé ayant une plus grande capacité de rétention d'eau et un faible poids de base

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US3833438A (en) * 1972-08-30 1974-09-03 Asahi Chemical Ind Process for the manufacture of a non-woven web of continuous filaments through the wet stretch spinning method
FI62318C (fi) * 1981-01-27 1982-12-10 Neste Oy Foerfarande foer framstaellning av ett alkaliloesligt cellulosaderivat
AT384813B (de) * 1984-10-09 1988-01-11 Chemiefaser Lenzing Ag Verfahren zur herstellung von cellulosecarbamaten
FI81842C (fi) 1986-12-31 1990-12-10 Neste Oy Icke-vaevd fiberprodukt.
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DE19721609A1 (de) * 1997-05-23 1998-11-26 Zimmer Ag Verfahren und Vorrichtung zum Verspinnen von Cellulosecarbamat-Lösungen
AT406386B (de) * 1998-07-28 2000-04-25 Chemiefaser Lenzing Ag Verfahren und vorrichtung zur herstellung cellulosischer formkörper
DE10037983B4 (de) * 2000-08-03 2006-04-13 Stefan Zikeli Polymerzusammensetzung und daraus hergestellter Formkörper mit einem Gehalt an Alkaloid
DE102004007617B4 (de) 2004-02-17 2007-02-08 Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V. Verfahren zur Herstellung eines Vliesstoffes, Vliesstoff und dessen Verwendung

Also Published As

Publication number Publication date
DE102005029793A1 (de) 2006-12-28
ATE526438T1 (de) 2011-10-15
WO2007000319A1 (fr) 2007-01-04
JP2008546928A (ja) 2008-12-25
US20080287025A1 (en) 2008-11-20
EP1896635A1 (fr) 2008-03-12
DE102005029793B4 (de) 2007-04-26

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