EP0797696B2 - Verfahren zur herstellung cellulosischer fasern - Google Patents

Verfahren zur herstellung cellulosischer fasern Download PDF

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Publication number
EP0797696B2
EP0797696B2 EP96932374A EP96932374A EP0797696B2 EP 0797696 B2 EP0797696 B2 EP 0797696B2 EP 96932374 A EP96932374 A EP 96932374A EP 96932374 A EP96932374 A EP 96932374A EP 0797696 B2 EP0797696 B2 EP 0797696B2
Authority
EP
European Patent Office
Prior art keywords
squeezing
filaments
fibers
water
points
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.)
Expired - Lifetime
Application number
EP96932374A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP0797696A1 (de
EP0797696B1 (de
Inventor
Markus Eibl
Dieter Eichinger
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
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First worldwide family litigation filed litigation Critical https://patents.darts-ip.com/?family=3519158&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=EP0797696(B2) "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
Priority to SI9630026T priority Critical patent/SI0797696T1/xx
Publication of EP0797696A1 publication Critical patent/EP0797696A1/de
Application granted granted Critical
Publication of EP0797696B1 publication Critical patent/EP0797696B1/de
Publication of EP0797696B2 publication Critical patent/EP0797696B2/de
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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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
    • 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
    • D01D5/26—Formation 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
    • 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
    • D04H1/42—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 characterised by the use of certain kinds of fibres insofar as this use has no preponderant influence on the consolidation of the fleece
    • D04H1/425—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
    • 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
    • D04H1/42—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 characterised by the use of certain kinds of fibres insofar as this use has no preponderant influence on the consolidation of the fleece
    • D04H1/425—Cellulose series
    • D04H1/4258—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
    • D04H3/08—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

Definitions

  • the invention relates to a process for producing cellulosic staple fibers by the amine oxide process.
  • amine oxide used here is primarily N-methylmorpholine-N-oxide (NMMO).
  • NMMO N-methylmorpholine-N-oxide
  • Other amine oxides are e.g. in EP-A-0 553 070.
  • a method of making moldable cellulose solutions is e.g. from EP-A - 0 356 419.
  • the preparation of cellulosic moldings using tertiary amine oxides is generally referred to as the amine oxide process.
  • US-A-4,246,221 discloses an amine oxide process for producing cellulose solutions which are spun into filaments in a mold, e.g. a spinneret, and then passed through a precipitation bath in which the cellulose is precipitated and water-containing swollen filaments are obtained. These filaments can be processed into cellulosic fibers and staple fibers in a conventional manner, ie by washing and aftertreatment.
  • the cellulose fibers prepared from amine oxide solutions by the dry / wet spinning method unlike natural, crimped cellulose fibers, such as cotton, have an ungapped, round cross-section.
  • the round cross section and the relatively smooth surface can lead to problems in further processing into yarns and fabrics, such as e.g. in EP-A-0 574 870.
  • These problems are according to this Patentveröt Drung a poor fiber adhesion in the spinning of the staple fiber to yarns, insufficient thread closure in the filament yarns and too low slip resistance of the fabrics of these fiber and filament yarns.
  • it is proposed in this patent publication to extrude the amine oxide solution through spinning holes whose cross-section is not round but profiled, for example Y-shaped. In this way, the Lyocell fibers are given a Y-shaped cross section.
  • Fibers which have a crimp are advantageous for the processing of fibers, in particular staple fibers, for various reasons.
  • the carding of the fibers succeed better, since this requires a certain adhesion of the fibers to each other, so that a card sliver can be made at all.
  • a crimped fiber has a higher tape adhesion than a non-crimped fiber, which can increase the carding speed.
  • DE-C-868 042 describes a process for refining fibers of synthetic linear high polymers with amide groups in the chain, in particular polyamides and polyurethanes, wherein confused fiber layers are subjected to such a high pressure by compression at elevated temperature and in the presence of swelling agents that the fibers deform superficially at the intersections. This is intended to give the synthetic polymer lasers a surface structure in the form of a roughened surface.
  • the object of the invention is to provide a process for producing a lyocell staple fiber which can be more easily processed into yarns and fabrics than the conventional lyocell fiber.
  • the fiber should not be made by mechanical crimping according to WO 94/28220 or WO 94/27903.
  • the fiber should not be made with spinnerets whose spinning holes have a non-round cross-sectional shape.
  • the lyocell staple fiber produced according to the invention should rather be produced with conventional spinnerets whose spinning holes have a round cross section.
  • pinch points is also to be understood as meaning kinks, twists and other changes in the cross-sectional shape of the filaments and fibers.
  • the invention is based on the finding that a filament prepared according to the amine oxide method can be changed in the swollen state by squeezing in its cross-sectional shape, and that this pinch after drying is maintained when squeezed with a sufficiently large pressure.
  • cellulosic fibers can be produced whose cross-sectional shape is not circular at the crimping but, for example, oval deformed.
  • the pinch points are under the microscope as indentations. Broadening or kink recognizable.
  • the magnitude of the pressure to be applied during squeezing naturally depends on a number of factors, e.g. fiber titer, degree of swelling and extent of desired cross-sectional changes.
  • the inventors of the present invention have found that the pressure required to achieve the desired cross-sectional change can be easily determined by preliminary tests.
  • the squeezing of the fiber can be accomplished by passing the swollen filaments through a suitable forming tool, such as a platen press, with the surface of the platen press structured by ridges and depressions to expose the swollen filaments to a different high pressure in the longitudinal direction Way to deform the filaments differently strong.
  • a suitable forming tool such as a platen press
  • the squeezing is preferably carried out so that at least three, in particular at least six squeezing sites are present per millimeter of filament length.
  • the fibers produced according to the invention can be more easily carded, since the pinch points give the fibers a certain adhesion to each other, so that a card sliver can be produced more easily.
  • the fibers produced according to the invention have a higher band retention than a conventional lyocell fiber with a continuous round cross-section. This allows the carding speed to be increased.
  • a preferred embodiment of the invention Method is characterized in that from the cut, water-containing, swollen filaments before crushing a nonwoven fabric is formed, in which the cut filaments are randomly oriented, and that the nonwoven fabric is pressed. It has been found that in this case the Verpressungs Stability need not be structured, since the necessary for impressing an irregular surface, different high pressure is due to the fact that the fibers are superimposed due to their statistical orientation, whereby during pressing at those points, where the fibers overlap one another, naturally a higher pressure is exerted than in other places. This leads to a different cross-sectional deformation.
  • the pressing can be carried out in this embodiment of the method according to the invention within the known from the viscose process, conventional pressing of washing water from a staple fiber fleece.
  • This dewatering is usually carried out with one or more pairs of rolls through which the staple fiber fleece is guided on a wire belt.
  • the decisive factor is that a sufficiently high pressure is exerted on the nonwoven with the roller pair (s), which not only reduces the water content, but also sufficiently changes the cross-sectional shape of the cut, swollen filaments.
  • the invention also relates to a cellulosic staple fiber which can be prepared by the process according to the invention.
  • the fiber of the invention is characterized by the fact that the induced cross-sectional change of the fiber is retained, i. does not disappear after carding or after yarn production. This facilitates the further processing of the lyocell fiber according to the invention.
  • the invention further includes yarns, fabrics, nonwovens, knits and knits characterized by containing the fibers of the invention.
  • a spinnable solution of cellulose in water-containing NMMO was first prepared using the method described in EP-A-0 356 419.
  • This spinnable solution was spun into filaments according to the method described in WO 93/19230, using a nozzle with circular spinning holes.
  • the filaments were passed after delay in an air gap in an aqueous precipitation bath, in which the cellulose coagulated.
  • the resulting hydrous filaments which were in the swollen state and were hydroplastic, were cut into staple lengths of 4 cm.
  • the cut filaments were slurried in water in a mixer and the cut filaments spun in the water were applied to a screen belt on which a nonwoven web of cut fibers formed, with the fibers oriented in all directions.
  • the screen belt was passed through a pair of rollers with a pressure of 10 6 Pa applied to the web for a time of about 0.1 seconds. Subsequently, the fleece was washed and passed through another pair of rollers, with which again a pressure of 10 6 Pa was applied to the web. Thereafter, the obtained staple fibers were dried.
  • Yarns were produced from the fibers obtained and the bond lengths of the strips were measured in accordance with DIN 53834, Part 1.
  • the fibers produced according to the invention showed a greater bond length than fibers having a substantially circular cross-section which were not produced according to the invention.

Landscapes

  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • General Chemical & Material Sciences (AREA)
  • Mechanical Engineering (AREA)
  • Artificial Filaments (AREA)
  • Polysaccharides And Polysaccharide Derivatives (AREA)
  • Yarns And Mechanical Finishing Of Yarns Or Ropes (AREA)
  • Nonwoven Fabrics (AREA)
  • Woven Fabrics (AREA)
  • Treatment Of Fiber Materials (AREA)
  • Spinning Methods And Devices For Manufacturing Artificial Fibers (AREA)
  • Treatments For Attaching Organic Compounds To Fibrous Goods (AREA)
EP96932374A 1995-10-13 1996-10-08 Verfahren zur herstellung cellulosischer fasern Expired - Lifetime EP0797696B2 (de)

Priority Applications (1)

Application Number Priority Date Filing Date Title
SI9630026T SI0797696T1 (en) 1995-10-13 1996-10-08 Process for producing cellulose fibres

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
AT0170395A AT402741B (de) 1995-10-13 1995-10-13 Verfahren zur herstellung cellulosischer fasern
AT17039/59 1995-10-13
PCT/AT1996/000188 WO1997014829A1 (de) 1995-10-13 1996-10-08 Verfahren zur herstellung cellulosischer fasern

Publications (3)

Publication Number Publication Date
EP0797696A1 EP0797696A1 (de) 1997-10-01
EP0797696B1 EP0797696B1 (de) 1998-07-29
EP0797696B2 true EP0797696B2 (de) 2007-10-24

Family

ID=3519158

Family Applications (1)

Application Number Title Priority Date Filing Date
EP96932374A Expired - Lifetime EP0797696B2 (de) 1995-10-13 1996-10-08 Verfahren zur herstellung cellulosischer fasern

Country Status (28)

Country Link
US (1) US6117378A (es)
EP (1) EP0797696B2 (es)
JP (4) JP3884479B2 (es)
KR (1) KR100430921B1 (es)
CN (1) CN1070543C (es)
AT (2) AT402741B (es)
AU (1) AU705530B2 (es)
BG (1) BG63643B1 (es)
BR (1) BR9606687A (es)
CA (1) CA2206250C (es)
CZ (1) CZ290849B6 (es)
DE (2) DE19680883D2 (es)
DK (1) DK0797696T3 (es)
ES (1) ES2120286T5 (es)
GB (1) GB2310630B (es)
GR (1) GR3027605T3 (es)
HK (1) HK1009161A1 (es)
HU (1) HU221512B (es)
MY (1) MY113879A (es)
NO (1) NO309490B1 (es)
PL (1) PL188136B1 (es)
RO (2) RO120276B1 (es)
SI (1) SI0797696T1 (es)
SK (1) SK284228B6 (es)
TR (1) TR199700493T1 (es)
TW (2) TW357201B (es)
WO (1) WO1997014829A1 (es)
ZA (1) ZA968515B (es)

Families Citing this family (17)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AT402741B (de) * 1995-10-13 1997-08-25 Chemiefaser Lenzing Ag Verfahren zur herstellung cellulosischer fasern
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
AT406588B (de) 1998-09-29 2000-06-26 Chemiefaser Lenzing Ag Verfahren zur herstellung cellulosischer fasern
DE102005024433A1 (de) * 2005-05-24 2006-02-16 Zimmer Ag Verfahren und Vorrichtung zum Schneiden von NMMO-haltigen Spinnfäden sowie für Zellulose-Stapelfasern
EP1936017B1 (de) * 2006-12-22 2013-08-21 Reifenhäuser GmbH & Co. KG Maschinenfabrik Verfahren und Vorrichtung zur Herstellung eines Spinnvlieses aus cellulosischen Filamenten
KR100865135B1 (ko) 2007-04-11 2008-10-24 주식회사 효성 의류용 라이오셀 필라멘트의 제조방법
AT505511B1 (de) * 2007-07-11 2014-03-15 Chemiefaser Lenzing Ag Füllfaser mit verbessertem öffnungsverhalten, verfahren zu deren herstellung und deren verwendung
AT506268B1 (de) * 2008-01-11 2014-08-15 Chemiefaser Lenzing Ag Mikrofaser
KR101455002B1 (ko) 2013-06-28 2014-11-03 코오롱인더스트리 주식회사 담배필터용 라이오셀 소재 및 그 제조방법
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
KR102211219B1 (ko) 2014-06-30 2021-02-03 코오롱인더스트리 주식회사 담배필터용 이형단면 라이오셀 소재 및 그 제조방법
KR102211186B1 (ko) 2014-12-31 2021-02-03 코오롱인더스트리 주식회사 담배필터용 라이오셀 소재 및 그 제조방법
DE202015102564U1 (de) 2015-05-19 2015-08-13 W. Pelz Gmbh & Co. Kg Oraltabakpackung
CN105200670B (zh) * 2015-08-17 2017-08-01 赖明荣 一种耐低温无纺布
EP3467161A1 (en) * 2017-10-06 2019-04-10 Lenzing Aktiengesellschaft Lyocell type cellulose filament production process
CN109809953A (zh) * 2018-12-29 2019-05-28 湖北航鹏化学动力科技有限责任公司 一种带孔型产气剂模压制品及其制备工艺
EP3771755A1 (de) 2019-08-02 2021-02-03 Lenzing Aktiengesellschaft Verfahren zur herstellung von lyocell-stapelfasern

Citations (1)

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Publication number Priority date Publication date Assignee Title
WO1995024520A1 (en) † 1994-03-09 1995-09-14 Courtaulds Fibres (Holdings) Limited Fibre production process and fibre produced thereby

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DE1114416B (de) * 1955-11-19 1961-09-28 Hoechst Ag Verfahren zum Herstellen von Garnen mit Wollcharakter nach Kamm- und Streichgarnart aus thermoplastischen synthetischen Fasern oder Gemischen solcher Fasern mit anderen Fasern
US3447956A (en) * 1966-09-02 1969-06-03 Eastman Kodak Co Process for strengthening swellable fibrous material with an amine oxide and the resulting material
US3447939A (en) * 1966-09-02 1969-06-03 Eastman Kodak Co Compounds dissolved in cyclic amine oxides
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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
FI64605C (fi) * 1982-03-30 1983-12-12 Neste Oy Foerfarande foer behandling av fibrer av cellulosaderivat
ATE22418T1 (de) * 1982-07-12 1986-10-15 Sicpa Holding Sa Umdrucktraeger fuer den thermischen trockendruck von cellulosefasern.
US5094690A (en) * 1988-08-16 1992-03-10 Lenzing Aktiengesellschaft Process and arrangement for preparing a solution of cellulose
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AT396930B (de) * 1992-01-23 1993-12-27 Chemiefaser Lenzing Ag Aminoxide
DE4308524C1 (de) * 1992-06-16 1994-09-22 Thueringisches Inst Textil Verfahren zur Herstellung von Cellulosefasern und -filamenten nach dem Trocken-Naßextrusionsverfahren
US5882356A (en) * 1992-10-21 1999-03-16 Courtaulds Fibres (Holdings) Limited Fibre treatment
GB9304887D0 (en) * 1993-03-10 1993-04-28 Courtaulds Plc Fibre treatment
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MY131648A (en) * 1993-05-24 2007-08-30 Courtaulds Fibres Holdings Ltd Manufacture of crimped solvent-spun cellulose fibre
AT399729B (de) * 1993-07-01 1995-07-25 Chemiefaser Lenzing Ag Verfahren zur herstellung cellulosischer fasern sowie vorrichtung zur durchführung des verfahrens und deren verwendung
GB9404510D0 (en) * 1994-03-09 1994-04-20 Courtaulds Fibres Holdings Ltd Fibre treatment
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AT402741B (de) * 1995-10-13 1997-08-25 Chemiefaser Lenzing Ag Verfahren zur herstellung cellulosischer fasern

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1995024520A1 (en) † 1994-03-09 1995-09-14 Courtaulds Fibres (Holdings) Limited Fibre production process and fibre produced thereby

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
Chemical Fibers International (CFI), Band 45, Februar 1995, Seite 11 †

Also Published As

Publication number Publication date
RO120276B1 (ro) 2005-11-30
JP2010174429A (ja) 2010-08-12
JP5043144B2 (ja) 2012-10-10
DK0797696T3 (da) 1999-05-03
RO116653B1 (ro) 2001-04-30
NO972440L (no) 1997-05-28
EP0797696A1 (de) 1997-10-01
BG101688A (en) 1998-03-31
HUP9800831A3 (en) 1998-12-28
CN1173901A (zh) 1998-02-18
WO1997014829A1 (de) 1997-04-24
HU221512B (en) 2002-10-28
HK1009161A1 (en) 1999-09-10
ES2120286T5 (es) 2008-04-16
AT402741B (de) 1997-08-25
TR199700493T1 (xx) 1997-11-21
GR3027605T3 (en) 1998-11-30
MX9704441A (es) 1997-10-31
PL188136B1 (pl) 2004-12-31
MY113879A (en) 2002-06-29
JP2009013577A (ja) 2009-01-22
AU705530B2 (en) 1999-05-27
BR9606687A (pt) 1997-11-25
CZ161497A3 (cs) 1998-06-17
GB2310630B (en) 1999-02-17
DE19680883D2 (de) 1998-04-16
AU7120596A (en) 1997-05-07
JP2007016381A (ja) 2007-01-25
ATE169063T1 (de) 1998-08-15
KR100430921B1 (ko) 2004-08-04
CA2206250A1 (en) 1997-04-24
TW357201B (en) 1999-05-01
ZA968515B (en) 1997-05-20
CZ290849B6 (cs) 2002-10-16
CA2206250C (en) 2003-12-09
GB9712422D0 (en) 1997-08-13
DE59600380D1 (de) 1998-09-03
US6117378A (en) 2000-09-12
CN1070543C (zh) 2001-09-05
SK72497A3 (en) 1998-01-14
SI0797696T1 (en) 1998-12-31
SK284228B6 (sk) 2004-11-03
ES2120286T3 (es) 1998-10-16
TW421677B (en) 2001-02-11
HUP9800831A2 (hu) 1998-07-28
NO972440D0 (no) 1997-05-28
NO309490B1 (no) 2001-02-05
JPH10511151A (ja) 1998-10-27
EP0797696B1 (de) 1998-07-29
GB2310630A (en) 1997-09-03
ATA170395A (de) 1996-12-15
JP3884479B2 (ja) 2007-02-21
PL320740A1 (en) 1997-10-27
BG63643B1 (bg) 2002-07-31

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