EP0817873B1 - Procede de production de fibres cellulosiques - Google Patents

Procede de production de fibres cellulosiques Download PDF

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Publication number
EP0817873B1
EP0817873B1 EP96908070A EP96908070A EP0817873B1 EP 0817873 B1 EP0817873 B1 EP 0817873B1 EP 96908070 A EP96908070 A EP 96908070A EP 96908070 A EP96908070 A EP 96908070A EP 0817873 B1 EP0817873 B1 EP 0817873B1
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EP
European Patent Office
Prior art keywords
coagulation
spinning solution
process according
zone
cellulose fibers
Prior art date
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Revoked
Application number
EP96908070A
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German (de)
English (en)
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EP0817873A1 (fr
Inventor
Günter FRISCHMANN
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Akzo Nobel NV
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Akzo Nobel NV
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Publication of EP0817873A1 publication Critical patent/EP0817873A1/fr
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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

Definitions

  • the invention relates to a method for producing cellulosic fibers by extruding a dissolved cellulose containing spinning solution in a gaseous medium a predetermined gas route, then immersed in and passing through a coagulation bath over a predetermined one Coagulation section, drawing of the cellulose fibers obtained and winding up.
  • Such a method is for example from DE-A-4409609 known.
  • the spinning solution is made after passing through the gas section immersed in a standing coagulation bath, which then accelerated together with the spinning solution.
  • the acceleration of the coagulation bath takes place via a Bottom tapered spinning funnel.
  • Such a Spinning funnel has the disadvantage that the piecing of the Spinning solution causes big problems.
  • the achievable winding speed is maximum according to the examples 150 m / min, so that this known method is not particularly is economical.
  • the object of the present invention is another Spinning process for the production of cellulosic fibers for To make available which works more economically.
  • it should at least address the disadvantages described above reduce.
  • cellulosic fibers are provided, which also at winding speeds above 1000 m / min sensitive cellulosic spinning solutions, such as it for solutions of cellulose in a water containing N-oxide of a tertiary amine, especially N-methylmorpholine -N-oxide (NMMO), the case is a stable Process supplies.
  • NMMO N-methylmorpholine -N-oxide
  • This task is achieved in the method mentioned at the outset solved that the extruded spinning solution after the gas line accelerated to a predetermined speed, at least approximately in the direction of the extruded spinning solution laminar flowing coagulation bath is introduced, with the coagulation liquid laterally in the path of the Spinning solution is supplied and the direction of flow of the spinning solution and the coagulation liquid over the entire coagulation distance is kept at least approximately in parallel, and that the cellulose fibers obtained on leaving the The coagulation path is laterally deflected and then wound up become.
  • the lateral laminar supply of the coagulation liquid can be achieved in a simple manner in that the one Side of a storage container for the coagulation liquid is designed as an overflow, the overflow being such is formed that the coagulation liquid on the one hand flows along the formation and on the other hand the Coagulation liquid from the horizontal in the flow direction redirects the spinning solution.
  • This shape can be done in simple Fall in the form of a quarter circle or parabola have, but it must be ensured that from Run out until the transition to the direction of flow of the spinning solution a constant curve is formed to ensure that turbulence largely avoided, so that the spinning solution Immerse in a laminar coagulation fluid stream can.
  • the lower edge of the Overflow can be used to the resulting redirect cellulosic thread by a sideways offset take-up of the resulting thread over the lower edge of the overflow is drawn.
  • the method according to the invention is suitable for production of fibers, the term fibers being monofilaments, Multifilament threads, but also hollow threads can be understood.
  • the process is also equally suitable for the production of porous ones Fibers suitable.
  • the fibers can have a round cross-section, but also have a profiled cross section.
  • the production of cellulosic fibers according to the invention succeeds excellent if the coagulation fluid is one-sided of the spinning solution in a constant layer thickness in the range from 1.0 to 5 mm is supplied.
  • the layer thickness is about 1 to 3 times as thick is set as the largest diameter of the extruded Spinning solution.
  • the speed of the coagulation liquid at the immersion point of the spinning solution to a value between 30 and 200 m / min, preferably between 50 and 80 m / min is, the production of the cellulosic fibers then works particularly well when the coagulation path is on a Length of 0.5 to 8 cm, preferably to a length of 1 to 4 cm.
  • the speed at the immersion point can be seen at the above procedure described in more detail by the height difference between the liquid level in the reservoir and the Immersion point of the spinning solution, the point at which the overflow in the flow direction of the spinning solution, determine.
  • the speed prevailing at the immersion point is determined then from the root of the product of two times gravitational acceleration times height difference (which multiplied by itself So speed corresponds to the product twice the acceleration of gravity multiplied by the difference in altitude). If such an overflow is used, the coagulation path becomes in a simple way over the route of the Overflow determined between the immersion point and the lower edge of the overflow.
  • the cellulose fibers obtained after the coagulation route so suddenly from the direction of flow of the coagulation liquid are deflected that they are in the deflection area a radius of 0.2 to 2 mm, preferably a radius between 0.3 and 1 mm. This can be done with the above Overflow can be achieved in that the lower edge the overflow is provided with a corresponding radius.
  • the invention is based on a figure and the following Examples explained in more detail.
  • 1 represents a spinneret, from which a spinning solution 2 into a gas, for example Ambient air is spun, which is then in a downward flowing coagulation liquid is immersed in this remains until the deflection point 4, after which the meantime coagulated thread 5 suddenly in the direction of the winding 6 is deflected and then via the winding device 6, for example, on a not shown separately the reel located, is wound up.
  • a spinning solution 2 into a gas for example Ambient air is spun
  • a downward flowing coagulation liquid is immersed in this remains until the deflection point 4, after which the meantime coagulated thread 5 suddenly in the direction of the winding 6 is deflected and then via the winding device 6, for example, on a not shown separately the reel located, is wound up.
  • the Sudden deflection at the deflection point 4 flows far predominant part of the coagulation fluid down continue (see stream 10 with arrow), so that at least thread 5 most of the coagulation fluid is removed. It has turned out here that it is favorable if the
  • a reservoir 8 is provided for the coagulation liquid 7 provided a constant in the means not shown Amount of coagulation liquid supplied as free of turbulence as possible becomes.
  • the coagulation liquid 7/3 at the immersion point is the Storage container 8 of the coagulation liquid 7 to the direction of flow the spinning solution 2 is limited by an overflow 9, being by the constant and constant addition of Coagulation liquid 7 in the reservoir 8 itself certain thickness of the flowing to the spinning solution 2, at least predominantly laminar coagulation fluid flow.
  • Determining the speed at which the coagulating fluid at the immersion point of the spinning solution 2 results from the height difference h between the liquid level the coagulation liquid 7 in the reservoir 8 and the transition of the curve of the overflow 9 to the vertical Arrangement.
  • the speed is calculated the coagulation liquid at the immersion point about the root of the product of two times gravitational acceleration times height difference h.
  • the spinning solution used contains 15% cellulose, 10% water and 75% NMMMO, which was obtained from pulp V65, to be obtained from Buckeye, in the manner known for the production of NMMO spinning solutions.
  • the spinning solution kept at a temperature of 120 ° C was spun in air.
  • the nozzle hole diameter of the spinneret used was 200 ⁇ m, the mass flow m given in the table being extruded through the spinneret.
  • V sp is therefore the maximum possible winding speed at which no breakage occurred during the manufacture of the threads.

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

Claims (12)

  1. Procédé de fabrication de fibres cellulosiques consistant à extruder, dans un milieu gazeux et sur une distance prédéterminée, une solution de filage (2) contenant de la cellulose dissoute, puis à l'immerger dans un bain coagulant et la faire passer par ce bain sur une distance de coagulation prédéterminée, à étirer les fibres de cellulose obtenues (5) et à les embobiner, lequel procédé est caractérisé par le fait que la solution de filage (2) extrudée, après avoir traversé la zone de gaz, est introduite dans un bain de coagulation à écoulement laminaire, s'écoulant à une vitesse prédéterminée et au moins à peu près parallèlement à la solution de filage (2) extrudée, le liquide de coagulation (7) arrivant latéralement dans le trajet de la solution de filage, et la direction d'écoulement de la solution de filage (2) et celle du liquide de coagulation (3) étant maintenues au moins à peu près parallèles sur la totalité de la zone de coagulation, et par le fait que les fibres de cellulose obtenues (5), lorsqu'elles quittent la zone de coagulation, sont déviées latéralement puis embobinées.
  2. Procédé selon la revendication 1, caractérisé par le fait que le liquide de coagulation (7) arrive unilatéralement au niveau de la solution de filage (2) avec une épaisseur de couche comprise entre 1,0 et 5 mm.
  3. Procédé selon la revendication 2, caractérisé par le fait que l'épaisseur de la couche est ajustée de manière à être de 1 à 3 fois plus importante que le plus grand diamètre de la solution de filage extrudée (2).
  4. Procédé selon une ou plusieurs des revendications 1 à 3, caractérisé par le fait que la vitesse d'écoulement du liquide de coagulation (3) au point d'immersion de la solution de filage (2) est ajustée à une valeur comprise entre 30 et 200 m/min.
  5. Procédé selon la revendication 4, caractérisé par le fait que la vitesse d'écoulement du liquide de coagulation (3) est ajustée à une valeur comprise entre 50 et 80 m/minute.
  6. Procédé selon une ou plusieurs des revendications 1 à 5, caractérisé par le fait que la longueur de la zone de coagulation est ajustée à une valeur comprise entre 0,5 et 8 cm.
  7. Procédé selon la revendication 6, caractérisé par le fait que la longueur de la zone de coagulation est ajustée à une valeur comprise entre 1 et 4 cm.
  8. Procédé selon une ou plusieurs des revendications 1 à 7, caractérisé par le fait que les fibres de cellulose coagulées (5) sont déviées, en aval de la zone de coagulation, d'un angle compris entre 45 et 60 ° par rapport à la direction d'écoulement du liquide de coagulation (3, 10).
  9. Procédé selon une ou plusieurs des revendications 1 à 8, caractérisé par le fait que les fibres de cellulose obtenues (5) sont déviées, en aval de la zone de coagulation, abruptement de la direction d'écoulement du liquide de coagulation (3).
  10. Procédé selon une ou plusieurs des revendications 1 à 9, caractérisé par le fait que les fibres de cellulose obtenues (10), en aval de la zone de coagulation, sont déviées abruptement de la direction d'écoulement du liquide de coagulation (3) de manière à former, dans la zone de déviation, une courbure d'un rayon de 0,2 à 2 mm.
  11. Procédé selon la revendication 10, caractérisé par le fait que ledit rayon est ajusté à une valeur comprise entre 0,3 et 1 mm.
  12. Procédé selon une ou plusieurs des revendications 1 à 11, caractérisé en ce que l'on utilise comme solution de filage une solution de cellulose dans un N-oxyde d'une amine tertiaire, en particulier de N-oxyde de N-méthylmorpholine (NMMO), contenant de l'eau.
EP96908070A 1995-03-31 1996-03-19 Procede de production de fibres cellulosiques Revoked EP0817873B1 (fr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE19512053A DE19512053C1 (de) 1995-03-31 1995-03-31 Verfahren zum Herstellen von cellulosischen Fasern
DE19512053 1995-03-31
PCT/EP1996/001173 WO1996030566A1 (fr) 1995-03-31 1996-03-19 Procede de production de fibres cellulosiques

Publications (2)

Publication Number Publication Date
EP0817873A1 EP0817873A1 (fr) 1998-01-14
EP0817873B1 true EP0817873B1 (fr) 1999-05-06

Family

ID=7758404

Family Applications (1)

Application Number Title Priority Date Filing Date
EP96908070A Revoked EP0817873B1 (fr) 1995-03-31 1996-03-19 Procede de production de fibres cellulosiques

Country Status (12)

Country Link
US (1) US5868985A (fr)
EP (1) EP0817873B1 (fr)
JP (1) JPH11502573A (fr)
KR (1) KR19980703390A (fr)
AT (1) ATE179768T1 (fr)
AU (1) AU692086B2 (fr)
CA (1) CA2216644A1 (fr)
DE (2) DE19512053C1 (fr)
PL (1) PL322498A1 (fr)
SK (1) SK129497A3 (fr)
TW (1) TW293042B (fr)
WO (1) WO1996030566A1 (fr)

Families Citing this family (19)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19744371C2 (de) * 1997-10-08 2002-11-14 Ostthueringische Materialpruef Verfahren und Vorrichtung zur Herstellung von Cellulosefilamentgarnen
KR100306059B1 (ko) * 1999-08-14 2001-09-24 박호군 섬유 필라멘트의 유도장치 및 방법
DE19954152C2 (de) * 1999-11-10 2001-08-09 Thueringisches Inst Textil Verfahren und Vorrichtung zur Herstellung von Cellulosefasern und Cellulosefilamentgarnen
TW577940B (en) * 2001-08-11 2004-03-01 Acordis Ag Precipitating bath
DE10200406A1 (de) * 2002-01-08 2003-07-24 Zimmer Ag Spinnvorrichtung und -verfahren mit turbulenter Kühlbeblasung
DE10204381A1 (de) * 2002-01-28 2003-08-07 Zimmer Ag Ergonomische Spinnanlage
DE10206089A1 (de) 2002-02-13 2002-08-14 Zimmer Ag Bersteinsatz
DE10213007A1 (de) * 2002-03-22 2003-10-09 Zimmer Ag Verfahren und Vorrichtung zur Regelung des Raumklimas bei einem Spinnprozess
DE10223268B4 (de) * 2002-05-24 2006-06-01 Zimmer Ag Benetzungseinrichtung und Spinnanlage mit Benetzungseinrichtung
DE10314878A1 (de) * 2003-04-01 2004-10-28 Zimmer Ag Verfahren und Vorrichtung zur Herstellung nachverstreckter Cellulose-Spinnfäden
DE102004024030A1 (de) 2004-05-13 2005-12-08 Zimmer Ag Lyocell-Verfahren mit polymerisationsgradabhängiger Einstellung der Verarbeitungsdauer
DE102004024028B4 (de) * 2004-05-13 2010-04-08 Lenzing Ag Lyocell-Verfahren und -Vorrichtung mit Presswasserrückführung
DE102004024029A1 (de) * 2004-05-13 2005-12-08 Zimmer Ag Lyocell-Verfahren und -Vorrichtung mit Steuerung des Metallionen-Gehalts
US20110180951A1 (en) * 2006-09-18 2011-07-28 Wee Eong Teo Fiber structures and process for their preparation
US9649600B2 (en) * 2009-04-24 2017-05-16 Mitsubishi Rayon Co., Ltd. Method for manufacturing a porous composite membrane
US11034817B2 (en) 2013-04-17 2021-06-15 Evrnu, Spc Methods and systems for processing mixed textile feedstock, isolating constituent molecules, and regenerating cellulosic and polyester fibers
KR101472094B1 (ko) * 2013-12-18 2014-12-15 주식회사 효성 응고 속도에 따라 결정화도가 조절 가능한 셀룰로오스 섬유의 제조방법 및 이로부터 제조된 셀룰로오스 섬유
EP3505659A1 (fr) * 2018-08-30 2019-07-03 Aurotec GmbH Procédé et dispositif de filage des filaments à déviation
EP3674455A1 (fr) * 2018-12-28 2020-07-01 Lenzing Aktiengesellschaft Procédé d'élimination de liquide dans des fils ou des fibres de filaments de cellulose

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS59228012A (ja) * 1983-06-10 1984-12-21 Asahi Chem Ind Co Ltd 湿式紡糸方法
JPS6119805A (ja) * 1984-07-03 1986-01-28 Asahi Chem Ind Co Ltd 高速度湿式紡糸方法およびその装置
US4869860A (en) * 1984-08-09 1989-09-26 E. I. Du Pont De Nemours And Company Spinning process for aromatic polyamide filaments
DE4308524C1 (de) * 1992-06-16 1994-09-22 Thueringisches Inst Textil Verfahren zur Herstellung von Cellulosefasern und -filamenten nach dem Trocken-Naßextrusionsverfahren
US5417909A (en) * 1992-06-16 1995-05-23 Thuringisches Institut Fur Textil- Und Kunststoff-Forschung E.V. Process for manufacturing molded articles of cellulose
DE4409609A1 (de) * 1994-03-21 1994-10-13 Thueringisches Inst Textil Verfahren zum Erspinnen von Cellulosefasern und -filamentgarnen

Also Published As

Publication number Publication date
KR19980703390A (ko) 1998-10-15
JPH11502573A (ja) 1999-03-02
AU5145996A (en) 1996-10-16
DE59601832D1 (de) 1999-06-10
AU692086B2 (en) 1998-05-28
TW293042B (fr) 1996-12-11
SK129497A3 (en) 1998-03-04
PL322498A1 (en) 1998-02-02
CA2216644A1 (fr) 1996-10-03
EP0817873A1 (fr) 1998-01-14
ATE179768T1 (de) 1999-05-15
DE19512053C1 (de) 1996-10-24
WO1996030566A1 (fr) 1996-10-03
US5868985A (en) 1999-02-09

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