EP0494852B1 - Verfahren zur Herstellung eines cellulosischen Formkörpers - Google Patents

Verfahren zur Herstellung eines cellulosischen Formkörpers Download PDF

Info

Publication number
EP0494852B1
EP0494852B1 EP92890004A EP92890004A EP0494852B1 EP 0494852 B1 EP0494852 B1 EP 0494852B1 EP 92890004 A EP92890004 A EP 92890004A EP 92890004 A EP92890004 A EP 92890004A EP 0494852 B1 EP0494852 B1 EP 0494852B1
Authority
EP
European Patent Office
Prior art keywords
nozzle
air gap
length
amounts
hole diameter
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
EP92890004A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP0494852A2 (de
EP0494852A3 (en
Inventor
Stefan Ing. Zikeli
Heinrich Dipl.-Ing. Dr. Firgo
Dieter Dipl.-Ing. Dr. Eichinger
Raimund Jurkovic
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
Application filed by Lenzing AG, Chemiefaser Lenzing AG filed Critical Lenzing AG
Publication of EP0494852A2 publication Critical patent/EP0494852A2/de
Publication of EP0494852A3 publication Critical patent/EP0494852A3/de
Application granted granted Critical
Publication of EP0494852B1 publication Critical patent/EP0494852B1/de
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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
    • D01D4/00—Spinnerette packs; Cleaning thereof
    • D01D4/02—Spinnerettes
    • 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 present invention relates to a method for producing a cellulosic shaped body, in which a cellulosic amine oxide solution is pressed through a nozzle, then passed through an air gap, optionally stretched therein and finally coagulated in a precipitation bath.
  • fibers with good performance properties can only be obtained from high polymers if a "fiber structure" can be achieved (Ullmann, 5th edition vol. A10, 456).
  • a fiber structure can be achieved (Ullmann, 5th edition vol. A10, 456).
  • melt spinning the fibers are stretched in the warm, plastic state while the molecules are still mobile. Dissolved polymers can be spun dry or wet. In dry spinning, drawing takes place while the solvent escapes or evaporates; the threads extruded into a coagulation bath are drawn during the coagulation. Methods of this type are known and are well described. In all of these cases, it is important that the transition from the liquid state (regardless of whether melt or solution) to the solid state takes place in such a way that the polymer chains or chain packages (i.e. fibrids, fibrils, etc.) are also oriented during thread formation can be.
  • EP-A-295 672 describes the production of aramid fibers, which are introduced, stretched and introduced into a non-coagulating medium via an air gap are then coagulated.
  • DD-PS 218 121 deals with the spinning of cellulose in amine oxides via an air gap, measures being taken to prevent sticking.
  • a disadvantage of this method is that extremely high take-off speeds are required in order to achieve the appropriate textile properties and fineness of the threads. Furthermore, it has been shown in practice that a long air gap on the one hand leads to fiber sticking and on the other hand leads to spinning insecurity and thread breakage in the event of high warpage. Precautions are therefore required to prevent this.
  • a method of this type is described in AT-PS 365 663 (or in equivalent US-PS 4,261,943). For large-scale production, however, the number of holes in a spinneret must be very high. In such a case, precautions to prevent the surface stickiness of the freshly extruded threads which enter the precipitant through an air gap are completely inadequate.
  • the minimum hole diameter of the nozzle used is at most 150 »m, preferably at most 70» m, and the length of the nozzle channel is at least 1000 »m, preferably about 1500» m, where the minimum hole diameter on the outlet side of the nozzle channel is present over at least 1/4, preferably over at least 1/3, of the length of the nozzle channel.
  • the spun thread also has good textile properties: it was found that the elongation at break in particular can be improved. Work capacity - d. H. the product of elongation and strength - behaves inversely proportional to the hole diameter. Furthermore, the loop strength and the associated elongation at break improve, which results in an improved abrasion resistance of the fabrics spun from these fibers. These properties also improve with decreasing hole diameters.
  • the nozzle channel is preferably widened conically on the inlet side and cylindrical on the outlet side.
  • the use of such nozzles is recommended because of the simpler manufacture; it is difficult to z. B. 1500 »m long nozzle with a diameter of only z. B. 100 »m.
  • a nozzle in which the minimum diameter is only provided on the outlet side (e.g. to 1/4 or 1/3 of the length) and which widens conically in the direction of the inlet side is much easier to manufacture and also gives good results.
  • Examples 1 to 3 are only for comparison, Examples 4 to 6 are examples according to the invention. Particularly noteworthy is the excellent value of 47.8 for the conditioned fiber strength in Example 6; Such a value is only reached with a delay of 100 with conventional nozzles!
  • Examples 1 to 3 A comparison of Examples 1 to 3 with Examples 4 to 6 immediately shows that the elongation at break is also improved by using nozzles according to the invention. Furthermore, it can be seen from Examples 4 to 6 that the product of strength and elongation at break (FFk * FDk), the loop strength and the elongation at break increase in the measurement of the loop strength with decreasing hole diameter.
  • a comparison of Example 1 with Example 5 shows that these values can also be improved by using long-channel nozzles according to the invention compared to nozzles with a short channel of the same diameter.
  • Examples 2 and 3 show that with a small nozzle channel length, the fiber properties depend on the distortion in the air gap; they get better as the default increases.
  • Examples 4 and 5 show that, under comparable conditions (warpage, hole diameter), all textile properties - except the elongation at break - are significantly improved by a long-channel nozzle according to the invention.
  • Example 6 shows that by using a small hole diameter of 50 »m, all textile properties are significantly improved.

Landscapes

  • 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)
  • Treatments For Attaching Organic Compounds To Fibrous Goods (AREA)
  • Woven Fabrics (AREA)
  • Manufacture Of Macromolecular Shaped Articles (AREA)
  • Polysaccharides And Polysaccharide Derivatives (AREA)
EP92890004A 1991-01-09 1992-01-09 Verfahren zur Herstellung eines cellulosischen Formkörpers Expired - Lifetime EP0494852B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
AT32/91 1991-01-09
AT0003291A AT395863B (de) 1991-01-09 1991-01-09 Verfahren zur herstellung eines cellulosischen formkoerpers

Publications (3)

Publication Number Publication Date
EP0494852A2 EP0494852A2 (de) 1992-07-15
EP0494852A3 EP0494852A3 (en) 1993-03-17
EP0494852B1 true EP0494852B1 (de) 1995-05-17

Family

ID=3479723

Family Applications (1)

Application Number Title Priority Date Filing Date
EP92890004A Expired - Lifetime EP0494852B1 (de) 1991-01-09 1992-01-09 Verfahren zur Herstellung eines cellulosischen Formkörpers

Country Status (24)

Country Link
US (1) US5252284A (ru)
EP (1) EP0494852B1 (ru)
JP (1) JPH04308220A (ru)
AT (1) AT395863B (ru)
BG (1) BG60111B2 (ru)
BR (1) BR9200043A (ru)
CA (1) CA2059043A1 (ru)
CZ (1) CZ282528B6 (ru)
DE (1) DE59202175D1 (ru)
DK (1) DK0494852T3 (ru)
ES (1) ES2072746T3 (ru)
FI (1) FI97155C (ru)
HU (1) HU212340B (ru)
MX (1) MX9200080A (ru)
NO (1) NO303696B1 (ru)
PH (1) PH29990A (ru)
PL (1) PL169309B1 (ru)
RO (1) RO107701B1 (ru)
RU (1) RU2072006C1 (ru)
SI (1) SI9112009A (ru)
SK (1) SK279852B6 (ru)
TR (1) TR27259A (ru)
YU (1) YU47623B (ru)
ZA (1) ZA9110195B (ru)

Families Citing this family (53)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5451364A (en) * 1992-01-17 1995-09-19 Viskase Corporation Cellulose food casing manufacturing method
US5658524A (en) * 1992-01-17 1997-08-19 Viskase Corporation Cellulose article manufacturing method
USH1592H (en) * 1992-01-17 1996-09-03 Viskase Corporation Cellulosic food casing
ATA53792A (de) * 1992-03-17 1995-02-15 Chemiefaser Lenzing Ag Verfahren zur herstellung cellulosischer formkörper, vorrichtung zur durchführung des verfahrens sowie verwendung einer spinnvorrichtung
US5417909A (en) * 1992-06-16 1995-05-23 Thuringisches Institut Fur Textil- Und Kunststoff-Forschung E.V. Process for manufacturing molded articles of cellulose
EP0648808B1 (en) * 1993-02-16 2002-05-22 Mitsubishi Rayon Co., Ltd. Cellulose molding solution and process for molding therefrom
US5652001A (en) * 1993-05-24 1997-07-29 Courtaulds Fibres Limited Spinnerette
ZA943387B (en) * 1993-05-24 1995-02-17 Courtaulds Fibres Holdings Ltd Spinning cell
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
AT401271B (de) * 1993-07-08 1996-07-25 Chemiefaser Lenzing Ag Verfahren zur herstellung von cellulosefasern
AT402738B (de) * 1993-07-28 1997-08-25 Chemiefaser Lenzing Ag Spinndüse
AT403584B (de) * 1993-09-13 1998-03-25 Chemiefaser Lenzing Ag Verfahren und vorrichtung zur herstellung cellulosischer flach- oder schlauchfolien
US5603884A (en) * 1994-11-18 1997-02-18 Viskase Corporation Reinforced cellulosic film
KR100398294B1 (ko) * 1994-12-02 2003-12-31 네브첼 게엠베하 운트 콤파니 카게 셀룰로즈형성물의제조방법및셀룰로즈필라멘트사
US5984655A (en) * 1994-12-22 1999-11-16 Lenzing Aktiengesellschaft Spinning process and apparatus
US5658525A (en) * 1995-08-04 1997-08-19 Viskase Corporation Cellulose food casing manufacturing method
GB9605504D0 (en) * 1996-03-15 1996-05-15 Courtaulds Plc Manufacture of elongate members
ID17252A (id) * 1996-04-29 1997-12-11 Akzo Nobel Nv Proses pembuatan obyek yang terbuat dari selulosa
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
US6773648B2 (en) 1998-11-03 2004-08-10 Weyerhaeuser Company Meltblown process with mechanical attenuation
US6605648B1 (en) * 1999-04-06 2003-08-12 Phillips Plastics Corporation Sinterable structures and method
EP1065301A1 (de) * 1999-07-01 2001-01-03 MELITTA HAUSHALTSPRODUKTE GmbH & Co. Kommanditgesellschaft Reaktive, faserförmige Cellulosekoagulate
US6368703B1 (en) 1999-08-17 2002-04-09 Phillips Plastics Corporation Supported porous materials
US6869445B1 (en) 2000-05-04 2005-03-22 Phillips Plastics Corp. Packable ceramic beads for bone repair
DE10043297B4 (de) * 2000-09-02 2005-12-08 Thüringisches Institut für Textil- und Kunststoff-Forschung e.V. Verfahren zur Herstellung von Cellulosefasern und Cellulosefilamentgarnen
AT410319B (de) * 2001-07-25 2003-03-25 Chemiefaser Lenzing Ag Celluloseschwamm und verfahren zu dessen herstellung
DE10200406A1 (de) * 2002-01-08 2003-07-24 Zimmer Ag Spinnvorrichtung und -verfahren mit turbulenter Kühlbeblasung
DE10200405A1 (de) * 2002-01-08 2002-08-01 Zimmer Ag Spinnvorrichtung und -verfahren mit 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
JP4234057B2 (ja) * 2003-06-30 2009-03-04 ヒョスング コーポレーション 高均質セルロース溶液から製造したセルロースディップコード及びタイヤ
AT6807U1 (de) * 2004-01-13 2004-04-26 Chemiefaser Lenzing Ag Cellulosische faser der gattung lyocell
DE102004024029A1 (de) * 2004-05-13 2005-12-08 Zimmer Ag Lyocell-Verfahren und -Vorrichtung mit Steuerung des Metallionen-Gehalts
DE102004024028B4 (de) * 2004-05-13 2010-04-08 Lenzing Ag Lyocell-Verfahren und -Vorrichtung mit Presswasserrückführung
DE102004024030A1 (de) 2004-05-13 2005-12-08 Zimmer Ag Lyocell-Verfahren mit polymerisationsgradabhängiger Einstellung der Verarbeitungsdauer
KR100595751B1 (ko) * 2004-11-11 2006-07-03 주식회사 효성 셀룰로오스 멀티 필라멘트의 제조방법
KR100966111B1 (ko) 2005-03-15 2010-06-28 주식회사 효성 셀룰로오스 멀티 필라멘트의 제조방법
US8029260B2 (en) * 2008-04-11 2011-10-04 Reifenhauser Gmbh & Co. Kg Maschinenfabrik Apparatus for extruding cellulose fibers
US8303888B2 (en) * 2008-04-11 2012-11-06 Reifenhauser Gmbh & Co. Kg Process of forming a non-woven cellulose web and a web produced by said process
US8029259B2 (en) * 2008-04-11 2011-10-04 Reifenhauser Gmbh & Co. Kg Maschinenfabrik Array of nozzles for extruding multiple cellulose fibers
EP2565304A1 (de) 2011-09-02 2013-03-06 Aurotec GmbH Extrusionsverfahren und -vorrichtung
EP2565303A1 (de) 2011-09-02 2013-03-06 Aurotec GmbH Extrusionsverfahren
EP2719801A1 (de) 2012-10-10 2014-04-16 Aurotec GmbH Spinnbad und Verfahren zur Verfestigung eines Formkörpers
GB2511528A (en) 2013-03-06 2014-09-10 Speciality Fibres And Materials Ltd Absorbent materials
CN107849100B (zh) 2015-04-09 2022-02-08 丝芭博株式会社 极性溶剂溶液及其制造方法
EP3281949A4 (en) 2015-04-09 2018-08-22 Spiber Inc. Polar solvent solution and production method thereof
ES2965516T3 (es) * 2017-10-06 2024-04-15 Chemiefaser Lenzing Ag Dispositivo para la extrusión de filamentos y fabricación de materiales no tejidos hilados
EP3674454A1 (en) * 2018-12-28 2020-07-01 Lenzing Aktiengesellschaft Cellulose filament process
CN111270322B (zh) * 2020-02-15 2021-02-02 江苏标丽精密机械有限公司 一种用于化纤设备的水浴牵伸槽装置

Family Cites Families (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2341555A (en) * 1939-01-05 1944-02-15 Baker & Co Inc Extrusion device
US3414645A (en) * 1964-06-19 1968-12-03 Monsanto Co Process for spinning wholly aromatic polyamide fibers
US3767756A (en) * 1972-06-30 1973-10-23 Du Pont Dry jet wet spinning process
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
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
ZA785535B (en) * 1977-10-31 1979-09-26 Akzona Inc Process for surface treating cellulose products
US4261943A (en) * 1979-07-02 1981-04-14 Akzona Incorporated Process for surface treating cellulose products
US4501886A (en) * 1982-08-09 1985-02-26 E. I. Du Pont De Nemours And Company Cellulosic fibers from anisotropic solutions
JPS5930909A (ja) * 1982-08-09 1984-02-18 Asahi Chem Ind Co Ltd 紡糸用口金
DD218124A1 (de) * 1983-08-16 1985-01-30 Waschgeraetewerk Veb Verfahren zur charakterisierung tensidhaltiger loesungen in waschgeraeten
SU1224362A1 (ru) * 1984-06-29 1986-04-15 Предприятие П/Я А-3844 Способ получени целлюлозных волокон
JPS6414317A (en) * 1987-06-18 1989-01-18 Du Pont Colored aramid fiber
FR2617511B1 (fr) * 1987-07-01 1989-12-15 Inst Textile De France Procede de preparation d'une solution de filage de cellulose en presence d'oxyde d'amine tertiaire et d'additif
DE4012479A1 (de) * 1990-04-19 1991-10-24 Degussa Titandioxidpresslinge, verfahren zu ihrer herstellung sowie ihre verwendung
ATA92690A (de) * 1990-04-20 1992-06-15 Chemiefaser Lenzing Ag Verfahren zur herstellung einer loesung von cellulose in n-methylmorpholin-n-oxid und wasser

Also Published As

Publication number Publication date
JPH04308220A (ja) 1992-10-30
YU47623B (sh) 1995-10-24
SI9112009A (en) 1994-12-31
NO920108L (no) 1992-07-10
PL169309B1 (pl) 1996-06-28
RU2072006C1 (ru) 1997-01-20
ZA9110195B (en) 1992-10-28
DE59202175D1 (de) 1995-06-22
CZ282528B6 (cs) 1997-08-13
HUT64110A (en) 1993-11-29
PL293115A1 (en) 1992-08-24
ATA3291A (de) 1992-08-15
FI97155B (fi) 1996-07-15
PH29990A (en) 1996-10-29
FI920072A0 (fi) 1992-01-08
US5252284A (en) 1993-10-12
NO303696B1 (no) 1998-08-17
BG60111B2 (en) 1993-10-29
RO107701B1 (ro) 1993-12-30
CA2059043A1 (en) 1992-07-10
FI97155C (fi) 1996-10-25
SK279852B6 (sk) 1999-04-13
EP0494852A2 (de) 1992-07-15
HU212340B (en) 1996-05-28
AT395863B (de) 1993-03-25
DK0494852T3 (da) 1995-07-10
FI920072A (fi) 1992-07-10
CS2292A3 (en) 1992-08-12
EP0494852A3 (en) 1993-03-17
TR27259A (tr) 1994-12-22
MX9200080A (es) 1992-07-01
NO920108D0 (no) 1992-01-08
YU200991A (sh) 1994-01-20
HU9200064D0 (en) 1992-04-28
BR9200043A (pt) 1992-09-08
ES2072746T3 (es) 1995-07-16

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