EP1307610B2 - Verfahren und vorrichtung zur herstellung von endlosformkörpern - Google Patents

Verfahren und vorrichtung zur herstellung von endlosformkörpern Download PDF

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Publication number
EP1307610B2
EP1307610B2 EP01931653A EP01931653A EP1307610B2 EP 1307610 B2 EP1307610 B2 EP 1307610B2 EP 01931653 A EP01931653 A EP 01931653A EP 01931653 A EP01931653 A EP 01931653A EP 1307610 B2 EP1307610 B2 EP 1307610B2
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EP
European Patent Office
Prior art keywords
extrusion
curtain
deflector
continuously molded
molded bodies
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
EP01931653A
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German (de)
English (en)
French (fr)
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EP1307610B1 (de
EP1307610A1 (de
Inventor
Stefan Zikeli
Friedrich Ecker
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
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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
    • D01D5/06—Wet spinning methods

Definitions

  • the invention relates to a process for the production of continuous molded articles according to the preamble of claim 1.
  • the invention also relates to a device for producing continuous molded articles according to the preamble of claim 7.
  • An endless molded article is understood below to mean a body produced from the extrusion solution in the form of a fiber, a staple fiber, a film or a filament.
  • the extrusion solution is a mostly spinnable solution which, in addition to a dissolved polymer such as cellulose, also contains water and a tertiary amine oxide, such as N-methylmorpholine-N-oxide.
  • a plurality of extrusion openings are combined to form a spinning station or to an extrusion head or nozzle, so that simultaneously a plurality of continuous moldings, for example in the form of filaments, can be simultaneously spun or extruded.
  • the continuous moldings of the plurality of extrusion openings are combined and bundled in the conventional methods and devices by a deflecting device. Since the stations for the post-processing of the continuous moldings are usually not in the extrusion direction, the continuous moldings are redirected by the deflecting device to further post-processing steps, for example washing, pressing, drying.
  • the economy of the process is essentially determined by the number and density of the extrusion openings. If the density of extrusion openings, also called “hole density”, is too high, however, adjacent extrusion openings will influence each other and the continuous moldings tend to stick together. If the hole density is too high, the heat exchange of the individual continuous molded articles is also disturbed, which leads to a poor quality of the continuous molded articles produced.
  • the polymer jet emerging from the nozzle is strongly deflected at the nozzle exit edge at a large focusing angle, which leads to an impairment of the extrusion and spinning process.
  • the beam angle increases with increasing nozzle size, the size of the nozzles are limited.
  • the large bundling angles are disadvantageously noticeable.
  • the large bundling angles have a negative effect on flow processes and bath displacement in the group of extruded bodies Bundling angles are observed increased turbulence and backflow in the spinning bath.
  • the US 4,246,221 uses a ring-shaped nozzle and is directed to a method and apparatus for producing a continuous shaped article in the form of a filament yarn / strand, wherein the cellulosic filaments are extruded from a solution and the filaments form a circle when extruded into a Klallbad immersed, the filaments are folded together on a pulley in the precipitation bath into a curtain and this curtain of filaments zuzammenbefore to the yarn / strand.
  • this system is limited by the need to avoid too large bundling angles in its economy.
  • high immersion depths with all the above-described negative effects are also required in this embodiment.
  • the high depth causes a high Spinnbadaustritts familial.
  • This high Spinnbadauschers Norway has a negative impact on the spinning process both during piecing, as well as during operation due to turbulence occurring.
  • the high Badaustritts Norway can the threadline in the form of sagging, which are entrained by the high Badauseries Supreme individual threads that are not curious deflected at the deflection point under the spinning bath outlet but sag downwards disturb.
  • With increased thread count per spinning station and a larger outlet opening is required, which must be circulated considerable Spinnbadmengen that also lead to turbulence.
  • the invention is therefore based on the object to increase the quality of the continuous molding without sacrificing the economy of the process or the device and without an additional design effort, and to improve the flow characteristics in the region between the extrusion opening and the deflection.
  • a curtain is a broad, substantially planar arrangement substantially adjacent to one another continuous moldings to understand.
  • the spinning quality is improved in that, according to the invention, the extrusion openings are arranged in series and the continuous shaped bodies emerging from the extrusion openings form a curtain.
  • the extrusion openings are arranged in series and the continuous shaped bodies emerging from the extrusion openings form a curtain.
  • the continuous moldings Due to the arrangement of the deflection in the precipitation bath, in which the extruded continuous moldings are passed, the continuous moldings are deflected only when they are solidified and mechanically strong. This ensures that the continuous moldings are not damaged by the deflection.
  • the flow conditions in the precipitation bath over the prior art are significantly improved in the apparatus and the method according to the invention:
  • the curtain emerges as a substantially planar body in the precipitation bath; the immersion angles of the continuous molded articles do not differ greatly from one another.
  • no strong turbulences occur in the precipitation bath and the surface of the precipitation bath remains calmer than in the prior art, so that the continuous moldings are guided safely through the precipitation bath and can not stick or crack.
  • the spinning security is increased.
  • the method according to the invention and the device according to the invention can, in an advantageous development, have an air gap which extends from the extrusion opening to the precipitation bath.
  • a stretching can take place, for example, by blowing air around the continuous moldings in the extrusion direction.
  • the stretching can also take place in that the continuous molded article is withdrawn through a take-off unit at a take-off speed which is higher than the extrusion speed.
  • a blowing can also take place transversely to the extrusion direction in order to dry the continuous moldings immediately after the extrusion.
  • the inventive method and the device according to the invention can work with or without blowing.
  • the spinning system can be of modular construction: individual curtains are formed through the extrusion openings of an extrusion head, which are each further processed together.
  • additional extrusion heads or curtains need to be added.
  • This expansion possibility is inventively facilitated by the fact that the extrusion openings of an extrusion head are arranged substantially in rows.
  • the extrusion heads can be arranged in series one behind the other or in parallel, so that additional extrusion heads are merely connected to the existing series of extrusion heads or added in parallel to the already existing extrusion heads.
  • receiving devices are provided, in which additional extrusion heads can be detachably inserted or reinserted.
  • a particularly simple adaptation of the machine capacity is achieved; if at least one extrusion head and at least one deflection device are combined to form an expansion unit. In this embodiment, only the unit must be added to the existing system in order to increase the capacity.
  • Fig. 1 shows a perspective view of an apparatus 1 for extruding Endlosformkörpem, in particular shows the Fig. 1 a spinning machine in which the continuous molded articles are spun in the form of individual fibers.
  • a spinning solution of water, cellulose and tertiary amine oxide is prepared in a storage container, not shown, and fed to the spinning unit 1 from this reservoir via a not shown piping system.
  • rupture protection devices are provided in the piping system, which derive the reaction pressure to the outside in such a spontaneous exothermic reaction and prevent damage to the device 1.
  • the extrusion solution is pumped through the piping system to the spin line 1 promoted.
  • a surge tank (not shown) may be provided, which compensates for pressure and flow fluctuations in the piping system and ensures a uniform and constant loading of the spinning unit 1 with the extrusion solution.
  • the spinning unit 1 is provided with extrusion heads 2 having a plurality of extrusion openings arranged in rows.
  • the number of rows of extrusion holes is much smaller than the number of extrusion holes in a row.
  • the extrusion solution therefore exits the extrusion head 2 after extrusion through the extrusion orifices as a substantially planar curtain 3.
  • the flat curtain 3 made of continuous molded articles or individual filaments is passed through an air gap 4 through the extrusion openings immediately after extrusion and then immersed in a precipitation bath 5.
  • the Endlosfonn redesign be stretched.
  • deflection 7 are arranged in the precipitation 5, which is held in a trough 6, deflection 7 are arranged.
  • each curtain is assigned a deflection 7.
  • the deflection devices 7 each extend in the row direction of the extrusion channel openings.
  • the baffles are designed as rollers or rollers, which passively or actively rotate with the continuous moldings.
  • the deflection device 7 can also be configured as a stationary, curved surface.
  • the curtain 3 is not brought together punctiform by the deflection 7, but deflected in the form of a curtain.
  • This has the advantage that the respective outer continuous moldings 3a, 3b of a curtain dip into the precipitation bath 5 at only a small angle.
  • the curtain 3 is passed to the outside of the precipitation bath 5 to a collecting device 8.
  • a punctiform merging of the curtain takes place only at the collecting device 8.
  • the continuous molded bodies of a curtain are forwarded as a bundle of continuous molded bodies or as fiber bundles.
  • the collecting devices 8 are also formed as a circular cylindrical rollers or rollers which are driven by a drive unit or passively with the movement of the continuous moldings rotate, but can also stand still.
  • a deflection device 7 is associated with a collecting device 8.
  • the axes of the collecting devices 8 run parallel to the row direction of the extrusion openings in the extrusion heads 2.
  • the collecting devices 8 are arranged one behind the other in such a way that the curtains, which in each case are combined there to form a fiber bundle 9a, are combined with one another to form a common fiber bundle 9b.
  • the fiber bundle 9b is pulled off through a take-off unit 10.
  • the withdrawal unit 10 withdraws the continuous molded articles at a predetermined, controllable withdrawal speed that is slightly greater than the extrusion rate of the extrusion solution through the extrusion openings. Due to this speed difference, a tensile stress is applied to the continuous moldings and the continuous moldings are drawn.
  • the spinning unit 1 is modular and can be expanded or reduced in size without great effort. To increase the manufacturing capacity, only a new extrusion head 20 has to be grown. This can be done by adding the extrusion head 20 together with a deflection device 21 associated with this extrusion head and a collecting device 22 as an extension unit 25 of the modular spinning installation 1.
  • FIG. 2 A second embodiment of the invention described.
  • the same function or the same structure as the corresponding components and part of the embodiment of Fig. 1 have the same reference numerals.
  • the spin system of Fig. 2 differs essentially from the spin system of Fig. 1 by the orientation of the extrusion heads 2 and by the configuration of the deflection device 7.
  • a single deflection device 7 which runs parallel to the extrusion heads 2. Also in the embodiment of Fig. 2 The continuous molded articles are brought together in the extrusion direction only after the deflection device 2 to substantially one point and deflected as a curtain.
  • the axes of the deflector 7 and the collecting devices 8 are perpendicular to each other.
  • the collecting devices 8 are in the spin system of Fig. 2 identical to those of the spin system of Fig. 1 ,
  • Each curtain 3 is associated with a collecting device, which brings the curtain together at substantially one point and forwards as a continuous molding bundle.
  • the endless shaped body bundles 9a of all curtains are united by the collecting devices into a single bundle 9b.
  • the spin system of Fig. 2 is expandable in two ways: First of all, parallel to the existing row of extrusion heads 2, a second, third etc. row of extrusion heads 2a can be added with their own deflection means 7b. Depending on the length of the collecting devices 8, two curtains each of two bundles or a common bundle can then be combined on a collecting device.
  • the extrusion device of the Fig. 2 also by adding another extrusion head 2 to the already existing series of extrusion heads and by adding an extension to the deflection device 7 and extended by a further collecting device 8.
  • the extrusion head 2 can be configured with the extension of the deflection device and with the additional collection device as an extension unit.

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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)
  • Extrusion Moulding Of Plastics Or The Like (AREA)
  • Spinning Methods And Devices For Manufacturing Artificial Fibers (AREA)
  • Curtains And Furnishings For Windows Or Doors (AREA)
  • Advancing Webs (AREA)
  • Application Of Or Painting With Fluid Materials (AREA)
  • Electrical Discharge Machining, Electrochemical Machining, And Combined Machining (AREA)
  • Artificial Filaments (AREA)
  • Shaping Of Tube Ends By Bending Or Straightening (AREA)
  • Nitrogen And Oxygen Or Sulfur-Condensed Heterocyclic Ring Systems (AREA)
  • Manufacture, Treatment Of Glass Fibers (AREA)
  • Paper (AREA)
  • Auxiliary Devices For And Details Of Packaging Control (AREA)
EP01931653A 2000-08-03 2001-04-25 Verfahren und vorrichtung zur herstellung von endlosformkörpern Expired - Lifetime EP1307610B2 (de)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE10037923 2000-08-03
DE10037923A DE10037923A1 (de) 2000-08-03 2000-08-03 Verfahren und Vorrichtung zur Herstellung von Endlosformkörpern
PCT/EP2001/004688 WO2002012599A1 (de) 2000-08-03 2001-04-25 Verfahren und vorrichtung zur herstellung von endlosformkörpern

Publications (3)

Publication Number Publication Date
EP1307610A1 EP1307610A1 (de) 2003-05-07
EP1307610B1 EP1307610B1 (de) 2005-12-07
EP1307610B2 true EP1307610B2 (de) 2011-01-05

Family

ID=7651241

Family Applications (1)

Application Number Title Priority Date Filing Date
EP01931653A Expired - Lifetime EP1307610B2 (de) 2000-08-03 2001-04-25 Verfahren und vorrichtung zur herstellung von endlosformkörpern

Country Status (15)

Country Link
US (1) US7270779B2 (ko)
EP (1) EP1307610B2 (ko)
KR (1) KR100550686B1 (ko)
CN (1) CN1265036C (ko)
AT (1) ATE312214T1 (ko)
AU (1) AU2001258370A1 (ko)
BR (1) BR0113143B1 (ko)
CA (1) CA2417720C (ko)
DE (2) DE10037923A1 (ko)
MY (1) MY135266A (ko)
NO (1) NO324056B1 (ko)
PL (1) PL363106A1 (ko)
TW (1) TW561206B (ko)
WO (1) WO2002012599A1 (ko)
ZA (1) ZA200300803B (ko)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2020207767A1 (en) 2019-04-10 2020-10-15 Lenzing Aktiengesellschaft Lyocell fiber tow, its manufacture and use

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
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
DE102004024030A1 (de) 2004-05-13 2005-12-08 Zimmer Ag Lyocell-Verfahren mit polymerisationsgradabhängiger Einstellung der Verarbeitungsdauer
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
EP3505659A1 (de) * 2018-08-30 2019-07-03 Aurotec GmbH Verfahren und vorrichtung zum filamentspinnen mit umlenkung
EP3741887A1 (de) 2019-05-21 2020-11-25 Aurotec GmbH Verfahren und vorrichtung zum regenerieren eines lösungsmittels von zellulose aus einem spinnverfahren
CN112793116A (zh) * 2020-12-15 2021-05-14 咸阳新德安新材料科技有限公司 一种大管径柔性复合高压输送管加工设备及工艺

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
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
WO2000006814A1 (de) † 1998-07-28 2000-02-10 Lenzing Aktiengesellschaft Verfahren und vorrichtung zur herstellung cellulosischer formkörper

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
IT1090451B (it) * 1978-05-24 1985-06-26 Corima Spa Testa di estrusione per la produzione di filati sintetici
JPS59228012A (ja) * 1983-06-10 1984-12-21 Asahi Chem Ind Co Ltd 湿式紡糸方法
US4869860A (en) * 1984-08-09 1989-09-26 E. I. Du Pont De Nemours And Company Spinning process for aromatic polyamide filaments
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
GB9526168D0 (en) 1995-12-21 1996-02-21 Courtaulds Fibres Holdings Ltd Fibre manufacture
US6221487B1 (en) * 1996-08-23 2001-04-24 The Weyerhauser Company Lyocell fibers having enhanced CV properties

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
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
WO2000006814A1 (de) † 1998-07-28 2000-02-10 Lenzing Aktiengesellschaft Verfahren und vorrichtung zur herstellung cellulosischer formkörper

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2020207767A1 (en) 2019-04-10 2020-10-15 Lenzing Aktiengesellschaft Lyocell fiber tow, its manufacture and use

Also Published As

Publication number Publication date
CA2417720A1 (en) 2002-02-14
ZA200300803B (en) 2003-07-14
NO324056B1 (no) 2007-08-06
NO20030526L (no) 2003-04-03
CA2417720C (en) 2007-01-23
AU2001258370A1 (en) 2002-02-18
BR0113143B1 (pt) 2010-11-30
TW561206B (en) 2003-11-11
CN1418267A (zh) 2003-05-14
BR0113143A (pt) 2003-06-10
KR100550686B1 (ko) 2006-02-08
WO2002012599A1 (de) 2002-02-14
US7270779B2 (en) 2007-09-18
NO20030526D0 (no) 2003-02-03
CN1265036C (zh) 2006-07-19
DE10037923A1 (de) 2001-03-29
EP1307610B1 (de) 2005-12-07
KR20030022349A (ko) 2003-03-15
US20040051202A1 (en) 2004-03-18
MY135266A (en) 2008-03-31
DE50108331D1 (de) 2006-01-12
EP1307610A1 (de) 2003-05-07
ATE312214T1 (de) 2005-12-15
PL363106A1 (en) 2004-11-15

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