WO2005080661A1 - Verfahren zur herstellung von vliesstoffen, vliesstoffe und deren verwendung - Google Patents
Verfahren zur herstellung von vliesstoffen, vliesstoffe und deren verwendung Download PDFInfo
- Publication number
- WO2005080661A1 WO2005080661A1 PCT/EP2005/001641 EP2005001641W WO2005080661A1 WO 2005080661 A1 WO2005080661 A1 WO 2005080661A1 EP 2005001641 W EP2005001641 W EP 2005001641W WO 2005080661 A1 WO2005080661 A1 WO 2005080661A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- nonwovens
- nonwoven fabric
- solution
- water
- cellulose
- Prior art date
Links
Classifications
-
- 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
- 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
- D04H3/013—Regenerated cellulose series
-
- 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
-
- 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
- D04H3/11—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 by fluid jet
-
- D—TEXTILES; PAPER
- D04—BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
- D04H—MAKING TEXTILE FABRICS, e.g. FROM FIBRES OR FILAMENTARY MATERIAL; FABRICS MADE BY SUCH PROCESSES OR APPARATUS, e.g. FELTS, NON-WOVEN FABRICS; COTTON-WOOL; WADDING ; NON-WOVEN FABRICS FROM STAPLE FIBRES, FILAMENTS OR YARNS, BONDED WITH AT LEAST ONE WEB-LIKE MATERIAL DURING THEIR CONSOLIDATION
- 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
-
- 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]
-
- 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]
- Y10T442/608—Including strand or fiber material which is of specific structural definition
-
- 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]
- Y10T442/647—Including a foamed layer or component
Definitions
- the invention relates to a process for the production of nonwovens, in which a lyotropic solution of cellulose carbamate in N-methylmorpholine-N-oxide (NMMNO) by means of extrusion through a nozzle bar containing several openings via an air gap into a coagulation bath to form a plurality of continuous threads which are spun in Connection can be swirled by inflowing with gaseous medium and / or fluid.
- NMMNO N-methylmorpholine-N-oxide
- the invention also relates to such nonwovens and their use.
- Nonwovens are textile fabrics in which the cohesion of the fibers is ensured not by weaving or knitting, but by interlocking and sometimes also gluing after the fibers have been swirled. Because of the wide range of uses and the low production costs, the Nonwovens production continues to show high annual growth rates.
- the advantages of these nonwoven materials lie in particular in the high moisture absorption, the high variability of density and thickness as well as the extensive surface anisotropy, which results in the numerous possible uses, e.g.
- Nonwovens made from continuous filaments are preferably made from synthetic fibers such as polyester, polyacrylonitrile or polypropylene.
- Viscose fibers are preferably used as short or staple fibers for the manufacture of nonwovens.
- Another known process for the production of fibers and other molded articles from regenerated cellulose consists in the precipitation of a solution of cellulose carbamate (EP-A 57 105, EP-A 178 292), which is obtained by reacting cellulose with urea with thermal splitting of the urea into isocyanic acid and ammonia and reaction of the isocyanic acid with the OH groups of the cellulose is formed.
- Cellulose carbamate is soluble in cold, dilute sodium hydroxide solution and can be regenerated back to cellulose in heated sodium hydroxide solution.
- this object is achieved in that a lyotropic solution of cellulose carbamate in N-methylmorpholine-N-oxide (NMMNO) by means of extrusion through at least 20 openings, i.e. Nozzles containing the nozzle block through an air gap in one
- NMMNO N-methylmorpholine-N-oxide
- Precipitation bath is spun into a plurality of continuous filaments, which are then swirled by flowing with gaseous medium and / or fluid to form the nonwoven.
- Cellulose carbamate is soluble in NMMNO and can be deformed in a similar way to cellulose.
- the following advantageous differences can be seen compared to the conventional NMMNO process:
- Cellulose carbamate has a significantly higher water absorption capacity and better dyeability than cellulose.
- a nozzle bar with at least 10,000 openings is preferably used for the extrusion.
- the ratio of length to diameter (L / D ratio) of the nozzles is preferably between 1 and 20.
- the width of the air gap between the nozzle and the precipitation bath is preferably 5 to 250 mm, particularly preferably 10 to 150 mm.
- the continuous filaments are guided downward into a slit-shaped funnel after spinning, the intermingling with the gaseous medium and / or fluid taking place at the outlet of the funnel.
- Air and / or water are preferably used as the gaseous medium and / or fluid.
- the continuous threads are deposited on a conveyor belt after the intermingling.
- a further intermingling of the continuous threads is preferably realized by shaking the conveyor belt.
- the lyotropic solution is preferred by swelling the cellulose carbamate in a 50% solution of
- the cellulose carbamate content of the lyotropic solution is preferably at least 20% by weight, particularly preferably 22 to 27% by weight. The percentages relate to the entire lyotropic solution.
- the precipitation bath preferably consists of a solution of NMMNO in water with an NMMNO content of 0.5 to 25% by weight, particularly preferably 5 to 15% by weight, based on the solution of NMMNO in water.
- the extrusion or spinning is preferably carried out at a temperature of 80 to 110 ° C, particularly preferably of 85 to 95 ° C.
- the nonwoven is subsequently attached the previously described steps are washed, pressed and dried.
- the washing can preferably be carried out by a high pressure water jet.
- the cellulose carbamate is regenerated to cellulose in a regeneration bath of 0.3 to 1% by weight sodium hydroxide in water at a temperature of 60 to 95 ° C. This enables nonwovens from regenerated
- a nonwoven fabric is also provided from a random scrim made of cellulose carbamate filaments. It is preferred that the continuous filaments have a strength of at least 60 cN / tex. Furthermore, such a nonwoven fabric can preferably be produced by the method according to one of claims 1 to 19.
- a nonwoven fabric is also made from a
- Tangled scrim made of continuous filaments made of regenerated cellulose.
- the fibers made from regenerated cellulose preferably have a residual nitrogen content (residual N content) of 0.3 to 0.5, particularly preferably 0.1 to 1.2.
- the nonwoven fabric has a pore structure with a preferred porosity of 1 to 10%. It is further preferred that the nonwoven fabric has a specific inner surface between 20 and 50 m / cm 3 , measured by means of small-angle X-ray scattering (SAXS).
- SAXS small-angle X-ray scattering
- the nonwoven fabric according to the invention can particularly preferably be produced from regenerated cellulose by the process according to one of Claims 16 to 19.
- the nonwovens according to the invention are preferably used in medicine, in particular as surgical drapes, bed sheets, wound coverings, gauze or cotton pads.
- the nonwovens can also be used as hygiene materials or as wipes in the household.
- Another field of application of the nonwovens according to the invention are decorative nonwovens, in particular tablecloths, napkins or curtains, and insert nonwovens in the clothing industry.
- the nonwovens according to the invention are used as insulating mats or reinforcing nonwovens, e.g. as replacement for
- Glass fiber fleece used in the construction industry. Because of the high strength, the nonwovens according to the invention can be used in a similar way to glass fiber nonwovens for reinforcing plastics.
- Fig. 1 shows a schematic representation of the process flow according to the invention.
- FIG. 2 shows a slot-shaped funnel according to the invention, at the exit of which the swirling takes place.
- the basic sequence of the method is shown in FIG. 1.
- the spinning solution 1 is extruded into a precipitation bath 4 by means of a spinning pump 2 by means of a nozzle bar 3, which contains a large number of nozzles.
- Spinning is carried out vertically from top to bottom through the air gap into the precipitation bath.
- the fibers are drawn off in a horizontal direction via deflection rollers 5.
- a first wash bath and a stretching section can optionally be located on this route.
- Another deflection roller 6 then leads the fiber bundle down into a slit-shaped funnel 7, at the exit of which the fiber bundle is flown by air or water on both sides.
- the fibers swirled in this way are placed on the one underneath
- Transport belt 8 deposited, with further swirling by shaking the depositing device or the conveyor belt transversely to the direction of travel.
- the strip passes through a washing bath with a washing nozzle 9, which can also be realized by a water jet under high pressure, and thus leads to a further solidification of the material in the sense of spun lacing.
- the conveyor belt consists of a wide-meshed network, preferably made of metal, which ensures that the washing liquid runs off quickly.
- the material can then be dried in appropriate drying devices. However, the water can also be squeezed out by a pair of rollers, which at the same time enables the nonwoven to be compressed.
- Figure 2 shows the structure of a slot-shaped funnel according to the invention.
- the fiber can be introduced into said funnel via the fiber inlet 1.
- the transport of the fiber through the funnel is made possible by a Venturi nozzle implements the water jet principle.
- Through the opening 3 there is the supply of water, air or a mixture thereof which, due to the Venturi profile, flows past the channel 4 in such a way that a negative pressure is created which transports the fiber through the channel 4.
- the fiber exit At the lower end 5 of the funnel is the fiber exit, from where the filaments can then be transported on.
- 800 g of pulp with a DP ( Cu o ⁇ am) of 520 are in a kneader with 3200 g of a solution consisting of 12 wt .-% NaOH, 30 wt .-% urea and 58 wt .-% water for 1 h at 25 ° C. mixed intensively and then pre-matured at 23 ° C for 48 h on a DP (Cu o ⁇ a ⁇ ) of 300.
- the moist alkali cellulose is kneaded at room temperature in a 5 l kneader with 1200 g of solid crystalline urea for 30 minutes. The temperature of the kneader is then raised to 140 ° C. and the water present is drawn off.
- the cellulose carbamate was mixed in a kneader with a 50% aqueous NMMO solution, this solution by removing the excess water with a Concentrated in a vacuum of 80 mbar to the NNMO monohydrate and thereby the cellulose carbamate dissolved.
- the spinning solution had a cellulose content of 25% by mass.
- the solution was spun on a laboratory system with 10,000 capillaries, led to the swirling nozzle via a roller system, swirled there in a water stream and continuously deposited on a conveyor belt to form a fleece, washed and dried.
- the basis weight of the fleece was 75.7 g / m, the dry strength 8.5 kN / m.
Abstract
Description
Claims
Priority Applications (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US10/589,574 US20080038979A1 (en) | 2004-02-17 | 2005-02-17 | Method For The Production Of Non-Woven, Non-Woven, And Use Thereof |
EP05707476A EP1716279A1 (de) | 2004-02-17 | 2005-02-17 | Verfahren zur herstellung von vliesstoffen, vliesstoffe und deren verwendung |
JP2006553535A JP2007522360A (ja) | 2004-02-17 | 2005-02-17 | 不織布の製造方法、不織布およびその使用 |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102004007617.0 | 2004-02-17 | ||
DE200410007617 DE102004007617B4 (de) | 2004-02-17 | 2004-02-17 | Verfahren zur Herstellung eines Vliesstoffes, Vliesstoff und dessen Verwendung |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2005080661A1 true WO2005080661A1 (de) | 2005-09-01 |
Family
ID=34877028
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/EP2005/001641 WO2005080661A1 (de) | 2004-02-17 | 2005-02-17 | Verfahren zur herstellung von vliesstoffen, vliesstoffe und deren verwendung |
Country Status (5)
Country | Link |
---|---|
US (1) | US20080038979A1 (de) |
EP (1) | EP1716279A1 (de) |
JP (1) | JP2007522360A (de) |
DE (1) | DE102004007617B4 (de) |
WO (1) | WO2005080661A1 (de) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2007000319A1 (de) | 2005-06-27 | 2007-01-04 | Fraunhofer-Gesellschaft Zur Förderung Der Angewanddten Forschung E.V. | Vliesstoffe, verfahren zu deren herstellung sowie deren verwendung |
US20090258227A1 (en) * | 2008-04-14 | 2009-10-15 | Fraunhofer-Gesellschaft Zur Forderung Der Angewandten Forschung E.V. | Method of producing cellulose carbamate fibre and use of the same |
Families Citing this family (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102004007618A1 (de) * | 2004-02-17 | 2005-09-22 | Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V. | Verfahren zur Herstellung von Vliesstoffen, Vliesstoff und dessen Verwendung |
AT508688B8 (de) * | 2009-08-28 | 2011-10-15 | Chemiefaser Lenzing Ag | Carboxyethylcellulosefasern, ihre verwendung in wundverbänden und hygieneartikeln sowie verfahren zu ihrer herstellung |
BR112013009797A2 (pt) * | 2010-10-23 | 2020-06-09 | Pop Test LLC | método de produção de um dispositivo para condução de uma análise não invasiva e dispositivo para conduzir uma análise não invasiva |
AT511002A1 (de) * | 2011-02-08 | 2012-08-15 | Univ Innsbruck | Verfahren zur verformung von cellulosecarbamat und produkte, die nach diesem verfahren hergestellt werden |
TW202140884A (zh) * | 2019-12-17 | 2021-11-01 | 奧地利商蘭仁股份有限公司 | 製造紡黏非織物的方法 |
Citations (13)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB955128A (en) | 1961-09-28 | 1964-04-15 | Onderzoekings Inst Res | Gas treatment of a moving artificial multi-filament thread |
US3767756A (en) | 1972-06-30 | 1973-10-23 | Du Pont | Dry jet wet spinning process |
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 |
DE2539725A1 (de) * | 1974-09-13 | 1976-03-25 | Asahi Chemical Ind | Als traegermaterial fuer kunstleder geeignete faservliese, ihre herstellung und verwendung |
DE2539721A1 (de) | 1975-09-06 | 1977-03-17 | Licentia Gmbh | Schaltungseinrichtung zur ueberwachung einer wechselspannung, insbesondere eine dreiphasige wechselspannung |
DE2830685A1 (de) | 1977-07-26 | 1979-02-15 | Akzona Inc | Verfahren zur herstellung einer loesung von zellulose in einem aminoxyd |
EP0057105A2 (de) | 1981-01-27 | 1982-08-04 | Neste Oy | Verfahren zur Herstellung eines in Alkali löslichen Cellulosecarbamat |
WO1983003433A1 (en) * | 1982-03-30 | 1983-10-13 | Turunen, Olli, T. | Procedure for treating cellulose derivative fibres |
EP0178292A2 (de) | 1984-10-09 | 1986-04-16 | Lenzing Aktiengesellschaft | Verfahren zur Herstellung von Cellulosecarbamaten |
WO1988005090A1 (en) | 1986-12-31 | 1988-07-14 | Neste Oy | Non-woven fibre product |
WO1998007911A1 (en) | 1996-08-23 | 1998-02-26 | Weyerhaeuser Company | Lyocell fibers and process for their preparation |
EP0879906A2 (de) | 1997-05-23 | 1998-11-25 | Zimmer Aktiengesellschaft | Verfahren und Vorrichtung zum Verspinnen von Cellulosecarbamat-Lösungen |
WO2000018991A1 (de) | 1998-09-29 | 2000-04-06 | Lenzing Aktiengesellschaft | Verfahren zur herstellung cellulosischer fasern |
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JPS5132704A (en) * | 1974-09-13 | 1976-03-19 | Asahi Chemical Ind | Hikakujobutsu oyobi sonoseizohoho |
JPS5230632B2 (de) * | 1974-12-11 | 1977-08-09 | ||
JPS5188714A (ja) * | 1975-01-28 | 1976-08-03 | Seruroosuzanteetochosenitonokaisenhoho | |
DD223740A1 (de) * | 1984-03-08 | 1985-06-19 | Groebzig Spinnduesenfab | Grossspinnduese |
JP3267781B2 (ja) * | 1993-12-22 | 2002-03-25 | 株式会社興人 | 再生セルロース成形品の製造方法 |
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FR2735794B1 (fr) * | 1995-06-26 | 1997-09-19 | Elysees Balzac Financiere | Procede de preparation d'un melange de fibres et de microfibres cellulosiques |
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AT406386B (de) * | 1998-07-28 | 2000-04-25 | Chemiefaser Lenzing Ag | Verfahren und vorrichtung zur herstellung cellulosischer formkörper |
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JP4001783B2 (ja) * | 2002-06-18 | 2007-10-31 | 旭化成せんい株式会社 | セルロース極細長繊維不織布の製造方法 |
DE102004007616B4 (de) * | 2004-02-17 | 2005-12-22 | Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V. | Verfahren zur Herstellung von Fasern und anderen Formkörpern aus Cellulosecarbamat und/oder regenerierter Cellulose |
DE102004007618A1 (de) * | 2004-02-17 | 2005-09-22 | Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V. | Verfahren zur Herstellung von Vliesstoffen, Vliesstoff und dessen Verwendung |
-
2004
- 2004-02-17 DE DE200410007617 patent/DE102004007617B4/de not_active Expired - Fee Related
-
2005
- 2005-02-17 EP EP05707476A patent/EP1716279A1/de not_active Withdrawn
- 2005-02-17 JP JP2006553535A patent/JP2007522360A/ja active Pending
- 2005-02-17 WO PCT/EP2005/001641 patent/WO2005080661A1/de active Application Filing
- 2005-02-17 US US10/589,574 patent/US20080038979A1/en not_active Abandoned
Patent Citations (13)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB955128A (en) | 1961-09-28 | 1964-04-15 | Onderzoekings Inst Res | Gas treatment of a moving artificial multi-filament thread |
US3767756A (en) | 1972-06-30 | 1973-10-23 | Du Pont | Dry jet wet spinning process |
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 |
DE2539725A1 (de) * | 1974-09-13 | 1976-03-25 | Asahi Chemical Ind | Als traegermaterial fuer kunstleder geeignete faservliese, ihre herstellung und verwendung |
DE2539721A1 (de) | 1975-09-06 | 1977-03-17 | Licentia Gmbh | Schaltungseinrichtung zur ueberwachung einer wechselspannung, insbesondere eine dreiphasige wechselspannung |
DE2830685A1 (de) | 1977-07-26 | 1979-02-15 | Akzona Inc | Verfahren zur herstellung einer loesung von zellulose in einem aminoxyd |
EP0057105A2 (de) | 1981-01-27 | 1982-08-04 | Neste Oy | Verfahren zur Herstellung eines in Alkali löslichen Cellulosecarbamat |
WO1983003433A1 (en) * | 1982-03-30 | 1983-10-13 | Turunen, Olli, T. | Procedure for treating cellulose derivative fibres |
EP0178292A2 (de) | 1984-10-09 | 1986-04-16 | Lenzing Aktiengesellschaft | Verfahren zur Herstellung von Cellulosecarbamaten |
WO1988005090A1 (en) | 1986-12-31 | 1988-07-14 | Neste Oy | Non-woven fibre product |
WO1998007911A1 (en) | 1996-08-23 | 1998-02-26 | Weyerhaeuser Company | Lyocell fibers and process for their preparation |
EP0879906A2 (de) | 1997-05-23 | 1998-11-25 | Zimmer Aktiengesellschaft | Verfahren und Vorrichtung zum Verspinnen von Cellulosecarbamat-Lösungen |
WO2000018991A1 (de) | 1998-09-29 | 2000-04-06 | Lenzing Aktiengesellschaft | Verfahren zur herstellung cellulosischer fasern |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2007000319A1 (de) | 2005-06-27 | 2007-01-04 | Fraunhofer-Gesellschaft Zur Förderung Der Angewanddten Forschung E.V. | Vliesstoffe, verfahren zu deren herstellung sowie deren verwendung |
US20090258227A1 (en) * | 2008-04-14 | 2009-10-15 | Fraunhofer-Gesellschaft Zur Forderung Der Angewandten Forschung E.V. | Method of producing cellulose carbamate fibre and use of the same |
Also Published As
Publication number | Publication date |
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US20080038979A1 (en) | 2008-02-14 |
DE102004007617A8 (de) | 2006-02-16 |
DE102004007617B4 (de) | 2007-02-08 |
EP1716279A1 (de) | 2006-11-02 |
JP2007522360A (ja) | 2007-08-09 |
DE102004007617A1 (de) | 2005-09-22 |
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