EP0823945A1 - Procede de production de fibres cellulosiques - Google Patents

Procede de production de fibres cellulosiques

Info

Publication number
EP0823945A1
EP0823945A1 EP97903143A EP97903143A EP0823945A1 EP 0823945 A1 EP0823945 A1 EP 0823945A1 EP 97903143 A EP97903143 A EP 97903143A EP 97903143 A EP97903143 A EP 97903143A EP 0823945 A1 EP0823945 A1 EP 0823945A1
Authority
EP
European Patent Office
Prior art keywords
filaments
extruded
drawn
spinneret
take
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.)
Granted
Application number
EP97903143A
Other languages
German (de)
English (en)
Other versions
EP0823945B1 (fr
Inventor
Hartmut Rüf
Christoph Schrempf
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.)
Lenzing AG
Original Assignee
Lenzing AG
Chemiefaser Lenzing AG
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
Family has litigation
First worldwide family litigation filed litigation Critical https://patents.darts-ip.com/?family=3489811&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=EP0823945(A1) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Application filed by Lenzing AG, Chemiefaser Lenzing AG filed Critical Lenzing AG
Publication of EP0823945A1 publication Critical patent/EP0823945A1/fr
Application granted granted Critical
Publication of EP0823945B1 publication Critical patent/EP0823945B1/fr
Anticipated expiration legal-status Critical
Revoked legal-status Critical Current

Links

Classifications

    • 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 present invention relates to a method for producing cellulosic fibers.
  • a solution of cellulose in a tertiary amine oxide is extruded through spinning holes of a spinneret, whereby filaments are extruded, the extruded filaments are passed through an air gap, a coagulation bath and over a take-off device, with which the filaments are drawn, and the drawn filaments processed cellulosic fibers.
  • N-methylmorpholine-N-oxide is used as the solvent.
  • NMMO N-methylmorpholine-N-oxide
  • Such a method is described, for example, in US Pat. No. 4,246,221 and provides fibers which are distinguished by a high strength, a high wet modulus and by a high loop strength.
  • the usability of fabrics, for example fabrics made from the fibers mentioned, is severely limited by the pronounced tendency of the fibers to fibrillate when wet. Fibrillation is understood to mean breaking open the fiber in the longitudinal direction under mechanical stress in the wet state, as a result of which the fiber is given a hairy, furry appearance.
  • a fabric made and dyed from these fibers loses its color intensity over the course of a few washes. In addition, there are bright stripes on the scuffed and crease edges.
  • the cause of the fibrillation is assumed to be that the fiber consists of fibrils arranged in the direction of the fibers, between which there is only a small amount of cross-connection.
  • WO 92/14871 describes a method for producing a fiber with a reduced tendency to fibrillation. This is achieved in that all baths with which the fiber comes into contact before the first drying have a pH of maximum 8.5.
  • WO 92/07124 also describes a method for producing a fiber with a reduced tendency to fibrillation, according to which the undried fiber is treated with a cationic polymer.
  • a polymer with imidazole and azetidine groups is mentioned as such a polymer.
  • treatment with an emulsifiable polymer e.g. Polyethylene or polyvinyl acetate, or crosslinking with glyoxal.
  • DE-A-42 19 658 and EP-A-0 574 870 describe that post-stretching of the precipitated filaments adversely affects the textile properties of the fibers, in particular their elongation.
  • WO 96/18760 discloses cellulosic filaments which have a strength of 50 to 80 cN / tex, an elongation at break of 6 to 25% and a specific breaking time of at least 300 s / tex. These filaments are subjected to a tension in the range of 5 to 93 cN during manufacture. It is disclosed that these fibers have a low tendency to fibrillation.
  • the present invention has in particular the object of providing a process with which fibers with improved properties are produced, in which the So-called work capacity, which is the mathematical product of fiber strength (conditioned) and elongation (conditioned), is improved.
  • This aim is achieved in a process for the production of cellulosic fibers by the combination of the measures that a solution of cellulose in a tertiary amine oxide is extruded through spinning holes of a spinneret, whereby filaments are extruded, the extruded filaments through an air gap
  • the drawn filaments are further processed into cellulosic fibers, the drawn filaments being subjected to a tensile stress in the longitudinal direction of not more than 5.5 cN / tex during further processing.
  • further processing encompasses all the steps which are carried out on the filaments, including the transport of the filaments after they have passed the first stopping point of the take-off device.
  • the drawn filaments are expediently cut during further processing and then washed. It has also been found that the length of the path along which the filaments are fed from the spinneret to the take-off device has an influence on the fiber properties in that the shorter the distance, the better the fiber properties.
  • a preferred embodiment of the method according to the invention is that the length of this route is a maximum of 12 m, in particular a maximum of 1 m.
  • the invention further relates to a method for producing cellulosic fibers, which is characterized by the combination of the measures that a solution of cellulose in a tertiary amine oxide is extruded through spinning holes of a spinneret, whereby filaments are extruded, the extruded filaments through an air gap
  • Fibers are further processed, the length of the path on which the filaments of the
  • All known cellulosic spinning materials can be processed by the process according to the invention. So these spinning masses can contain between 5 and 25% cellulose. However, cellulose contents between 10 and 18% are preferred. Hard or soft wood can be used as the raw material for pulp production, the degree of polymerization of the pulp (s) being in the range of commercially available products can lie. However, it has been shown that the spinning behavior is better with a higher molecular weight of the pulp. Depending on the degree of polymerization of the pulp or the solution concentration, the spinning temperature can be between 75 and 140 * C and can be easily optimized for each pulp or concentration.
  • the friction of the fibers against one another during washing processes or during finishing processes in the wet state was simulated by the following test: 8 fibers were placed in a 20 ml sample vial with 4 ml water and in a laboratory shaker type RO-10 from Gerhardt for 9 hours, Bonn (FRG) shaken at level 12. The fibrillation behavior of the fibers was then assessed under the microscope by counting the number of fibrils per 0.276 mm fiber length.
  • the loop strength was tested by forming a loop with two fibers and subjecting this loop to a tensile test. Only those fibers that tear at the loop were used for averaging.
  • a vibroscope which is a Lenzing AG titer measuring device for non-destructive titer determination using the vibration method, and a Vibrodyn, which is a device for tensile tests on individual fibers with a constant deformation rate, were used to measure the loop strength and elongation.
  • Air of 20 * C and a relative humidity of 65% was taken as the standard climate.
  • the filaments were passed through the air gap into the precipitation bath and over a godet, with which a tension was exerted on the filaments, thereby stretching them in the air gap. After passing through the godet, the filaments were cut immediately and only then processed further by washing out the amine oxide, finishing and drying. The filaments were thus processed without tension.
  • the textile data of the fibers obtained are shown in Table 1.
  • Example 2 The procedure was analogous to Example 1, except that the filaments were not cut immediately after passing the godet, that is to say the first stopping point, but were fed to a further godet which was 2.2 meters from the first godet. The speed of the second godet was adjusted so that the filament cable between the the first and the second godet were under a tension of 11.6 cN / tex.
  • the filaments After passing through the second godet, the filaments were cut immediately and only then processed further by washing out the amine oxide, finishing and drying. The filaments were therefore not processed without tension after the first stopping point.
  • the textile data of the fibers obtained are shown in Table 1.
  • the column “Fibrils” shows the average number of fibrils over a fiber length of 276 ⁇ m.
  • Working capacity is the mathematical product of strength (cond.) And elongation (cond.).
  • a spinning mass of the composition of Example 1 was at 120 * C through a nozzle with 1 spinning hole, which a was 100 microns in diameter, extruded into filaments with a single fiber titer of 1.8 dtex.
  • a stretching load affects the tendency to fibrillation by loading the filaments with different weights, the loading time also being varied. The results are shown in Table 2.
EP97903143A 1996-03-04 1997-03-03 Procede de production de fibres cellulosiques Revoked EP0823945B1 (fr)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
AT407/96 1996-03-04
AT40796 1996-03-04
AT0040796A AT404032B (de) 1996-03-04 1996-03-04 Verfahren zur herstellung cellulosischer fasern
PCT/AT1997/000041 WO1997033020A1 (fr) 1996-03-04 1997-03-03 Procede de production de fibres cellulosiques

Publications (2)

Publication Number Publication Date
EP0823945A1 true EP0823945A1 (fr) 1998-02-18
EP0823945B1 EP0823945B1 (fr) 2001-10-31

Family

ID=3489811

Family Applications (1)

Application Number Title Priority Date Filing Date
EP97903143A Revoked EP0823945B1 (fr) 1996-03-04 1997-03-03 Procede de production de fibres cellulosiques

Country Status (13)

Country Link
US (1) US5863478A (fr)
EP (1) EP0823945B1 (fr)
JP (1) JPH11504995A (fr)
CN (1) CN1072284C (fr)
AT (2) AT404032B (fr)
AU (1) AU711895B2 (fr)
BR (1) BR9702110A (fr)
CA (1) CA2219110A1 (fr)
DE (1) DE59705152D1 (fr)
ID (1) ID16121A (fr)
NO (1) NO310779B1 (fr)
TW (1) TW336259B (fr)
WO (1) WO1997033020A1 (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP3812489A1 (fr) 2019-10-23 2021-04-28 Lenzing Aktiengesellschaft Surface du rouleau utilisée dans la production de lyocell filaments
CN113242917A (zh) * 2018-12-28 2021-08-10 连津格股份公司 从纤维素长丝纱线或纤维中去除液体的方法

Families Citing this family (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6235392B1 (en) * 1996-08-23 2001-05-22 Weyerhaeuser Company Lyocell fibers and process for their preparation
US6221487B1 (en) 1996-08-23 2001-04-24 The Weyerhauser Company Lyocell fibers having enhanced CV properties
CN1061106C (zh) * 1997-12-09 2001-01-24 宜宾丝丽雅集团有限公司 溶剂法纤维素纤维制造方法
DE10206089A1 (de) 2002-02-13 2002-08-14 Zimmer Ag Bersteinsatz
AT6807U1 (de) * 2004-01-13 2004-04-26 Chemiefaser Lenzing Ag Cellulosische faser der gattung lyocell
DE102005024433A1 (de) * 2005-05-24 2006-02-16 Zimmer Ag Verfahren und Vorrichtung zum Schneiden von NMMO-haltigen Spinnfäden sowie für Zellulose-Stapelfasern
AT504144B1 (de) 2006-08-17 2013-04-15 Chemiefaser Lenzing Ag Verfahren zur herstellung von zellulosefasern aus einer lösung von zellulose in einem tertiären aminoxid und vorrichtung zur durchführung des verfahrens
KR101580115B1 (ko) * 2008-03-27 2016-01-04 코르덴카 게엠베하 운트 코. 카게 셀룰로오스 성형체
WO2011129444A1 (fr) 2010-04-15 2011-10-20 株式会社ブリヂストン Pneumatique
PL2683858T3 (pl) * 2011-03-08 2018-03-30 Sappi Netherlands Services B.V. Sposób suchego przędzenia obojętnej i modyfikowanej anionowo celulozy
TWI667378B (zh) 2014-01-03 2019-08-01 奧地利商蘭精股份有限公司 纖維素纖維
EP3467161A1 (fr) 2017-10-06 2019-04-10 Lenzing Aktiengesellschaft Procédé de production d'un filament de cellulose de type lyocell
EP3505659A1 (fr) 2018-08-30 2019-07-03 Aurotec GmbH Procédé et dispositif de filage des filaments à déviation
EP3674454A1 (fr) * 2018-12-28 2020-07-01 Lenzing Aktiengesellschaft Procédé de filament de cellulose
DE102019108908A1 (de) * 2019-04-04 2020-10-08 Deutsche Institute Für Textil- Und Faserforschung Denkendorf Spannbetonkörper, Verfahren zu dessen Herstellung und dessen Verwendung

Family Cites Families (16)

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Publication number Priority date Publication date Assignee Title
AT307951B (de) * 1971-02-18 1973-06-12 Deutsch Friedrich Verfahren zur Herstellung eines Stahlbeschlagteiles für Schier, insbesondere einer Stahlkante und nach diesem Verfahren hergestellter Stahlbeschlagteil
US4246221A (en) * 1979-03-02 1981-01-20 Akzona Incorporated Process for shaped cellulose article prepared from a solution containing cellulose dissolved in a tertiary amine N-oxide solvent
US4416698A (en) * 1977-07-26 1983-11-22 Akzona Incorporated Shaped cellulose article prepared from a solution containing cellulose dissolved in a tertiary amine N-oxide solvent and a process for making the article
DD218121A1 (de) * 1983-10-17 1985-01-30 Chemiefaser Komb Schwarza Wilh Verfahren zur herstellung von formkoerpern aus celluloseloesungen
GB9022175D0 (en) * 1990-10-12 1990-11-28 Courtaulds Plc Treatment of fibres
AT395582B (de) * 1991-01-09 1993-01-25 Brunn Betonwerk Verfahren zur herstellung von betonpflastersteinen oder -platten mit der besonderen eigenschaft, kohlenwasserstoffe zu adsorbieren und diese auch durch wasser nicht auswaschbar einzulagern und langsam oekologisch abzubauen
AT395862B (de) * 1991-01-09 1993-03-25 Chemiefaser Lenzing Ag Verfahren zur herstellung eines cellulosischen formkoerpers
GB9103297D0 (en) * 1991-02-15 1991-04-03 Courtaulds Plc Fibre production method
DE4308524C1 (de) * 1992-06-16 1994-09-22 Thueringisches Inst Textil Verfahren zur Herstellung von Cellulosefasern und -filamenten nach dem Trocken-Naßextrusionsverfahren
DE4219658C3 (de) * 1992-06-16 2001-06-13 Ostthueringische Materialpruef Verfahren zur Herstellung von Cellulosefasern -filamenten und -folien 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
TW256860B (fr) * 1993-05-24 1995-09-11 Courtaulds Fibres Holdings Ltd
AT401271B (de) * 1993-07-08 1996-07-25 Chemiefaser Lenzing Ag Verfahren zur herstellung von cellulosefasern
AT401063B (de) * 1994-09-05 1996-06-25 Chemiefaser Lenzing Ag Verfahren zur herstellung von cellulosischen formkörpern
AUPM788194A0 (en) * 1994-09-05 1994-09-29 Sterling, Robert A building panel
DE4444140A1 (de) * 1994-12-12 1996-06-13 Akzo Nobel Nv Lösungsmittelgesponnene cellulosische Filamente

Non-Patent Citations (1)

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See references of WO9733020A1 *

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN113242917A (zh) * 2018-12-28 2021-08-10 连津格股份公司 从纤维素长丝纱线或纤维中去除液体的方法
CN113242917B (zh) * 2018-12-28 2022-12-09 连津格股份公司 从纤维素长丝纱线或纤维中去除液体的方法
US11873580B2 (en) 2018-12-28 2024-01-16 Lenzing Aktiengesellschaft Process for liquid removal from cellulose filaments yarns or fibers
EP3812489A1 (fr) 2019-10-23 2021-04-28 Lenzing Aktiengesellschaft Surface du rouleau utilisée dans la production de lyocell filaments

Also Published As

Publication number Publication date
CN1189860A (zh) 1998-08-05
NO310779B1 (no) 2001-08-27
ATE207981T1 (de) 2001-11-15
BR9702110A (pt) 1999-01-12
CN1072284C (zh) 2001-10-03
JPH11504995A (ja) 1999-05-11
TW336259B (en) 1998-07-11
US5863478A (en) 1999-01-26
EP0823945B1 (fr) 2001-10-31
AT404032B (de) 1998-07-27
NO974847D0 (no) 1997-10-21
ATA40796A (de) 1997-12-15
AU1759497A (en) 1997-09-22
AU711895B2 (en) 1999-10-21
NO974847L (no) 1997-10-21
WO1997033020A1 (fr) 1997-09-12
ID16121A (id) 1997-09-04
CA2219110A1 (fr) 1997-09-12
DE59705152D1 (de) 2001-12-06

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