EP0811087B1 - Verfahren zur herstellung cellulosischer fasern sowie vorrichtung zur durchführung des verfahrens - Google Patents
Verfahren zur herstellung cellulosischer fasern sowie vorrichtung zur durchführung des verfahrens Download PDFInfo
- Publication number
- EP0811087B1 EP0811087B1 EP96942981A EP96942981A EP0811087B1 EP 0811087 B1 EP0811087 B1 EP 0811087B1 EP 96942981 A EP96942981 A EP 96942981A EP 96942981 A EP96942981 A EP 96942981A EP 0811087 B1 EP0811087 B1 EP 0811087B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- filaments
- precipitating agent
- cellulose
- process according
- air gap
- 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
Links
- 238000000034 method Methods 0.000 title claims abstract description 38
- 229920003043 Cellulose fiber Polymers 0.000 title abstract description 3
- 238000004519 manufacturing process Methods 0.000 title description 9
- 229920002678 cellulose Polymers 0.000 claims abstract description 36
- 239000001913 cellulose Substances 0.000 claims abstract description 36
- 239000003795 chemical substances by application Substances 0.000 claims abstract description 18
- 230000001376 precipitating effect Effects 0.000 claims abstract description 18
- 150000003512 tertiary amines Chemical class 0.000 claims abstract description 14
- 239000000243 solution Substances 0.000 claims description 28
- 238000009987 spinning Methods 0.000 claims description 24
- 239000004745 nonwoven fabric Substances 0.000 claims description 6
- 239000000112 cooling gas Substances 0.000 claims description 5
- 238000002166 wet spinning Methods 0.000 claims description 5
- LFTLOKWAGJYHHR-UHFFFAOYSA-N N-methylmorpholine N-oxide Chemical compound CN1(=O)CCOCC1 LFTLOKWAGJYHHR-UHFFFAOYSA-N 0.000 claims description 4
- 238000000578 dry spinning Methods 0.000 claims description 4
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 4
- 238000001816 cooling Methods 0.000 claims description 3
- 239000007864 aqueous solution Substances 0.000 claims description 2
- 239000000463 material Substances 0.000 claims 2
- 229920000875 Dissolving pulp Polymers 0.000 claims 1
- 238000005422 blasting Methods 0.000 claims 1
- 239000004744 fabric Substances 0.000 claims 1
- 238000003825 pressing Methods 0.000 claims 1
- 230000001133 acceleration Effects 0.000 description 12
- 239000000835 fiber Substances 0.000 description 8
- 239000007788 liquid Substances 0.000 description 7
- 238000001556 precipitation Methods 0.000 description 5
- 238000007664 blowing Methods 0.000 description 4
- 239000007789 gas Substances 0.000 description 4
- 150000001412 amines Chemical class 0.000 description 2
- 238000002347 injection Methods 0.000 description 2
- 239000007924 injection Substances 0.000 description 2
- 238000000465 moulding Methods 0.000 description 2
- 238000012545 processing Methods 0.000 description 2
- 239000000725 suspension Substances 0.000 description 2
- AVXURJPOCDRRFD-UHFFFAOYSA-N Hydroxylamine Chemical compound ON AVXURJPOCDRRFD-UHFFFAOYSA-N 0.000 description 1
- FAPWRFPIFSIZLT-UHFFFAOYSA-M Sodium chloride Chemical compound [Na+].[Cl-] FAPWRFPIFSIZLT-UHFFFAOYSA-M 0.000 description 1
- LSNNMFCWUKXFEE-UHFFFAOYSA-N Sulfurous acid Chemical compound OS(O)=O LSNNMFCWUKXFEE-UHFFFAOYSA-N 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000001704 evaporation Methods 0.000 description 1
- 230000008020 evaporation Effects 0.000 description 1
- 238000007380 fibre production Methods 0.000 description 1
- 239000010408 film Substances 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 239000011261 inert gas Substances 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 230000035699 permeability Effects 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
- 239000010409 thin film Substances 0.000 description 1
Images
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
- 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
- D01D5/12—Stretch-spinning methods
- D01D5/14—Stretch-spinning methods with flowing liquid or gaseous stretching media, e.g. solution-blowing
-
- 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 manufacturing cellulosic fibers, in which a solution of cellulose in a tertiary amine oxide in the warm state to filaments is spun, which is guided through an air gap and then brought into contact with a precipitant, to precipitate the cellulose, the filaments being exerted subtracted from a force and stretched in the air gap, which Force is exerted with the precipitant by the Precipitant is allowed to flow in the direction in which the filaments are pulled off and the filaments with the Precipitants are brought into contact.
- the invention relates also an apparatus for performing the method.
- tertiary amine oxides Can solve cellulose and that from these solutions through Precipitation cellulosic moldings can be obtained.
- a A method for producing such solutions is, for example known from EP-A-0 356 419. According to this publication is first a suspension of cellulose in an aqueous prepares tertiary amine oxide. The amine oxide contains up to 40 Mass% water. The aqueous cellulose suspension is heated and water is drawn off under reduced pressure until the cellulose goes into solution. The process can be carried out in one Thin film treatment apparatus are carried out.
- a spinning process is known from DD-A-271 534, according to which the freshly spun filaments with precipitant in Be brought into contact, which are allowed to flow in the direction into which the filaments are drawn.
- From DE-C - 195 12 053 is also a method for Manufacture of cellulosic fibers known in which the freshly extruded filaments into one on predetermined Accelerated speed, at least approximately in the direction of extruded filaments introduced laminar flowing precipitation bath become. The filaments are drawn off from a spool.
- JP-A-7 268 718 describes a method and an apparatus for wet spinning a Cellulose solution in which a precipitation liquid is allowed to flow down in the form of a column is left while the spinning solution comes from a below the outlet for the Precipitation bath solution arranged spinneret at an angle in the direction of the precipitation liquid let flow and is taken down by this.
- air is not just air such, but any gas or gas mixture which means the Filaments is inert towards and spinning on others Way doesn't bother. Accordingly, another can be in the "air gap” Gas is present as air.
- the object of the present invention is a method of the type mentioned at the outset so that a high Output can be achieved and highly concentrated, highly viscous Cellulose solutions can be processed.
- the process according to the invention for the production of cellulosic Fibers in which a solution of cellulose in a tertiary Amine oxide is spun into filaments in the warm state, which passed through an air gap and then with a Precipitating agents are brought into contact with the cellulose fell, the filaments being pulled off by exerting a force and stretched in the air gap, what force with the Precipitant is exercised by the precipitant in the Flow in the direction in which the filaments are drawn and the filaments are in contact with the precipitant brought, is characterized in that the Precipitant at the time when it with the Filaments are brought into contact at a speed that is at least as large as, and is in particular greater than the withdrawal speed of the Filaments.
- the invention is based on the finding that highly viscous Cellulose solutions with cellulose concentrations of at least 12 % By mass without mechanical stretching device, e.g. a Discharge godet, so only with that of the flowing Precipitant kinetic energy transferred to the filaments can be stretched.
- the filaments are so-called injector, in which precipitant that the Filaments accelerated, injected with a pressure that is above the ambient pressure.
- the withdrawal speed is obtained in a known manner from the desired titer of the filaments, the concentration of the Cellulose solution and the ejection of the cellulose solution.
- the filaments are preferably wetted with precipitant before them with the flowing precipitant, which has the power to Pulling on it exercises be brought into contact.
- the Precipitant with which the filaments can be wetted be the same precipitant with which on the filaments the stretching force is exerted. But it can also be a be different.
- the filaments in the air gap by blowing be cooled by a cooling gas, the cooling immediately after spinning is done.
- the blowing can be damp Air can be made.
- the invention also relates to a method for producing a Spunbond, which is characterized in that the cellulosic fibers produced according to the invention into one Fleece are laid, which is consolidated.
- the fleece can be consolidated by treatment with a water jet become. But it can also be solidified advantageously by it with an aqueous solution of a tertiary amine oxide, which Cellulose can dissolve, soaked to the cellulose to dissolve superficially, and by the soaked fleece is then pressed at elevated temperature, after which the Solution of the tertiary amine oxide from the pressed fleece is washed out.
- a tertiary amine oxide which Cellulose can dissolve, soaked to the cellulose to dissolve superficially, and by the soaked fleece is then pressed at elevated temperature, after which the Solution of the tertiary amine oxide from the pressed fleece is washed out.
- the invention also relates to a device for carrying out the Method according to the invention, which device comprises: a opening for receiving precipitants and filaments, one Channel that communicates with the opening and in which the Filaments are guided, which device thereby is characterized in that the channel in an acceleration range flows into which the filaments with a precipitant be accelerated by a feeder in the Acceleration range opens, with respect to atmospheric pressure increased pressure is introduced.
- the invention further relates to a spinning device for Implementation of the amine oxide process after Dry / wet spinning process with a spinneret, a feeder for cooling gas and the above device.
- 1 is a heatable one (heating not shown) Designated spinneret, which with the line 2 Spinning mass 3, i.e. warm cellulose solution with a temperature from about 100 ° C to 120 ° C.
- the pump 4 is used for Dosing the spinning mass and setting the for the Extrude required pressure.
- the from the spinneret 1 over the spin holes 16 are extruded filaments 5 with a Inert gas 6, preferably air, cooled, which over the Gas nozzles 7 onto the filaments 5 leaving the spinneret 1 is directed. This blowing can be done with spinnerets be worked which have a high hole density without that the filaments stick together during the Spinning comes.
- the filaments 5 are guided into the channel 9 of the injector 17 and finally get into an acceleration range 10 of the Injector 17, in which the filaments with quickly down in The precipitant flowing in the direction of the diffuser 11 come into contact, whereby the cellulose is precipitated.
- the Filaments accelerated.
- the one used for acceleration Precipitant is fed into the injector 17 via the feed 14 pressed.
- the filaments with a higher Speed pulled down as it spins from the spinneret 1 be delivered later. This causes a stretching of the Filaments.
- the drawn filaments pass through the diffuser 11 from the injector 17 and can, for example, on a Sieve (not shown) are stored.
- the leadership of the Filaments through the injector 17 is not shown in FIG. 1 shown.
- the air gap extends from the underside of the spinneret 1 to the end of channel 9, i.e. to the mouth of channel 9 in the acceleration range 10.
- the length of the channel 9 is not limited and can also be shorter than shown in Figure 1 is.
- FIG. 2 shows a preferred embodiment of the Device according to the invention shown.
- Device parts that have already been described in FIG. 1 named with the same reference numbers.
- the filaments 5 extruded from the spinneret 1 enter a Device which essentially has an injector part 18, on which a kind of spinning funnel 19 is placed.
- the mechanical connection of the injector part 18 to the spinning funnel 19 can e.g. be made by screwing.
- the filaments 5 extruded from the spinneret 1 pass over an air gap, which is determined by the distance of the underside of the Spinneret 1 defined by the surface of the precipitant 15 is, in the precipitant 15 of the spinning funnel 19, by channel 9a and finally enter the Acceleration range 10 of the injector 18, in which the Filaments flowing rapidly down towards diffuser 11 Precipitating agents are accelerated.
- Precipitating agents are accelerated.
- precipitant used is in the feed 14 in the Injector 18 pressed.
- the spinning funnel 19 there is a feed 12 for Precipitant pumped into the cone 8 via the channel 13 becomes. Care should be taken to ensure that the amounts of precipitant, which are fed via the feeders 12 and 14 to the spinning funnel 19 or discharged from the injector 18 via the diffuser 11, are coordinated so that the desired in the air gap Stretching is achieved and at the same time a decrease in the Liquid level 15 and thus an increase in Air gap is prevented.
- a spinnable cellulose solution with a cellulose content of 12% (NMMO: 77%; H 2 O: 11%) was prepared in a heatable and evacuable stirred kettle made from sulfite pulp and aqueous NMMO. This solution was extruded at 130 ° C. from a spinneret with 888 holes (hole diameter: 80 ⁇ m) to form filaments.
- the air gap was 22 mm.
- Precipitant was added to feed 14 in an amount of 1008 Injected 1 / hour.
- the precipitant speed was about 378 in the acceleration area 10 at the exit of the channel 9a m / minute, whereby a stretching or warping of 9.9 is achieved has been.
- a draw of 9.9 means that the filaments are drawn off at a speed which is 9.9 times the speed at which the filaments leave the spinneret and enter the air gap at which they are drawn.
- the fibers produced had a titer of 1.30 dtex.
- Example 1 The process described in Example 1 was carried out, but the precipitant injection and precipitant speed given in the table below were selected and the stretching also given in the table was achieved.
- Precipitant Stretching Titer (dtex) injection speed Ex. 2 792 l / h 396 m / min 5.3 2.45
- Ex. 3 828 l / h 414 m / min 6.9 1.87
- the filament strand produced in Example 2 was run onto a screen belt to form a nonwoven with a basis weight of 40 g / m 2 .
- the liquid permeability of this fleece was measured with a LISTER device according to EDANA (European Disposables and Nonwovens Association) standard 150.2-93 (methodology: A certain amount (5 ml) of the test liquid (0.9% NaCl solution) is brought onto the fleece at a constant outlet speed (the time for the removal of this liquid through the fleece is measured electronically). The average of 10 measurements was 1.47 sec.
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)
- Polysaccharides And Polysaccharide Derivatives (AREA)
- Spinning Methods And Devices For Manufacturing Artificial Fibers (AREA)
- Treatments For Attaching Organic Compounds To Fibrous Goods (AREA)
- Chemical Or Physical Treatment Of Fibers (AREA)
- Nonwoven Fabrics (AREA)
- Yarns And Mechanical Finishing Of Yarns Or Ropes (AREA)
Description
- einen Kanal, in welchem frisch extrudierte cellulosische Filamente geführt werden,
- einen Beschleunigungsbereich, in welchen der Kanal mündet, sodaß die Filamente dem Beschleunigungsbereich zugeführt werden können, und
- eine Zuführung für Fällungsmittel, welche Zuführung in den Beschleunigungsbereich mündet, sodaß Fällungsmittel dem Beschleunigungsbereich zugeführt werden kann,
| Fällungsmittel- | Verstreckung | Titer (dtex) | ||
| einspritzung | geschwindigkeit | |||
| Bsp. 2 | 792 l/h | 396 m/min | 5,3 | 2,45 |
| Bsp. 3 | 828 l/h | 414 m/min | 6,9 | 1,87 |
| Bsp. 4 | 720 l/h | 360 m/min | 9,3 | 1,39 |
Claims (11)
- Verfahren zur Herstellung cellulosischer Fasern, bei welchem eine Lösung von Cellulose in einem tertiären Aminoxid in warmem Zustand zu Filamenten versponnen wird, welche durch einen Luftspalt geführt und anschließend mit einem Fällungsmittel in Kontakt gebracht werden, um die Cellulose zu fällen, wobei die Filamente durch Ausüben einer Kraft abgezogen und im Luftspalt verstreckt werden, welche Kraft mit dem Fällungsmittel ausgeübt wird, indem das Fällungsmittel in die Richtung strömen gelassen wird, in welche die Filamente abgezogen werden und die Filamente mit dem Fällungsmittel in Kontakt gebracht werden,
dadurch gekennzeichnet,
daß das Fällungsmittels in dem Zeitpunkt, in welchem es mit den Filamenten in Kontakt gebracht wird, mit einer Geschwindigkeit strömen gelassen wird, die mindestens so groß ist wie, und insbesondere größer ist als die Abzugsgeschwindigkeit der Filamente. - Verfahren nach Anspruch 1, dadurch gekennzeichnet, daß die Filamente mit Fällungsmittel benetzt werden, bevor sie mit dem strömenden Fällungsmittel, welches die Kraft zum Abziehen auf sie ausübt, in Kontakt gebracht werden.
- Verfahren nach einem der Ansprüche 1 oder 2, dadurch gekennzeichnet, daß die Filamente im Luftspalt durch Anblasen mit einem Kühlgas gekühlt werden, wobei die Kühlung unmittelbar nach dem Verspinnen vorgenommen wird.
- Verfahren nach einem der Ansprüche 1 bis 3, dadurch gekennzeichnet, daß als tertiäres Aminoxid N-Methylmorpholin-N-oxid eingesetzt wird.
- Verfahren nach Anspruch 4, dadurch gekennzeichnet, daß die zu verspinnende Lösung eine Cellulosekonzentration von mindestens 12 Masse-%, vorzugsweise 13-15 Masse-%, aufweist.
- Verfahren zur Herstellung eines Spinnvlieses, dadurch gekennzeichnet, daß die gemäß dem Verfahren nach einem oder mehreren der Ansprüche 1 bis 5 hergestellten cellulosischen Fasern zu einem Vlies gelegt werden, welches verfestigt wird.
- Verfahren nach Anspruch 6, dadurch gekennzeichnet, daß das Vlies verfestigt wird, indem es mit einer wäßrigen Lösung eines tertiären Aminoxids, welche Cellulose lösen kann, getränkt wird, um die Cellulose oberflächlich anzulösen, und indem das getränkte Vlies anschließend bei erhöhter Temperatur verpreßt wird, wonach die Lösung des tertiären Aminoxids aus dem verpreßten Vlies ausgewaschen wird.
- Vorrichtung zur Durchführung des Verfahrens gemäß einem der Ansprüche 1 bis 7, mit einer öffnung (8) zur Aufnahme von Fällungsmittel (15) und Filamenten (5), einem Kanal (9a), der mit der öffnung (8) in Verbindung steht und in welchem die Filamente (5) geführt werden, dadurch gekennzeichnet, daß der Kanal (9a) in einen Beschleunigungsbereich (10) mündet, in welchem die Filamente (5) mit einem Fällungsmittel beschleunigt werden, das über eine Zuführung (14), die in den Beschleunigungsbereich (10) mündet, mit gegenüber Atmosphärendruck erhöhtem Druck eingebracht wird.
- Spinnvorrichtung zur Durchführung des Verfahrens nach dem Trocken/Naß-Spinnverfahren mit einer Spinndüse (1), einer Zuführung (7) für Kühlgas (6) und einer Vorrichtung gemäß Anspruch 8.
- Verwendung eines Injektors, welcher aufweist:zur Durchführung des Verfahrens gemäß einem der Ansprüche 1 bis 7.einen Kanal (9), in welchem frisch extrudierte cellulosische Filamente geführt werden,einen Beschleunigungsbereich (10), in welchen der Kanal (9) mündet, so daß die Filamente dem Beschleunigungsbereich zugeführt werden können, undeine Zuführung (14) für Fällungsmittel, welche Zuführung (14) in den Beschleunigungsbereich (10) mündet, so daß Fällungsmittel dem Beschleunigungsbereich (10) zugeführt werden kann,
- Spinnvlies, hergestellt durch das Legen von gemäß dem Verfahren nach einem oder mehreren der Ansprüche 1 bis 5 hergestellten cellulosischen Fasern zu einem Vlies und Verfestigen des Vlieses mit einem Wasserstrahl.
Applications Claiming Priority (4)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| AT2107/99 | 1995-12-27 | ||
| AT2107/95 | 1995-12-27 | ||
| AT0210795A AT402947B (de) | 1995-12-27 | 1995-12-27 | Verfahren zur herstellung cellulosischer fasern sowie vorrrichtung zur durchführung des verfahrens |
| PCT/AT1996/000260 WO1997024476A1 (de) | 1995-12-27 | 1996-12-20 | Verfahren zur herstellung cellulosischer fasern sowie vorrichtung zur durchführung des verfahrens |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| EP0811087A1 EP0811087A1 (de) | 1997-12-10 |
| EP0811087B1 true EP0811087B1 (de) | 1999-01-20 |
Family
ID=3527917
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP96942981A Expired - Lifetime EP0811087B1 (de) | 1995-12-27 | 1996-12-20 | Verfahren zur herstellung cellulosischer fasern sowie vorrichtung zur durchführung des verfahrens |
Country Status (11)
| Country | Link |
|---|---|
| EP (1) | EP0811087B1 (de) |
| JP (1) | JPH11501371A (de) |
| CN (1) | CN1181788A (de) |
| AT (2) | AT402947B (de) |
| AU (1) | AU1185797A (de) |
| BR (1) | BR9607047A (de) |
| CA (1) | CA2213221A1 (de) |
| DE (1) | DE59601184D1 (de) |
| ES (1) | ES2129992T3 (de) |
| NO (1) | NO973763L (de) |
| WO (1) | WO1997024476A1 (de) |
Families Citing this family (14)
| 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 |
| AT406386B (de) | 1998-07-28 | 2000-04-25 | Chemiefaser Lenzing Ag | Verfahren und vorrichtung zur herstellung cellulosischer formkörper |
| DE10025231A1 (de) * | 2000-05-22 | 2000-11-02 | Lurgi Zimmer Ag | Verfahren zum Extrudieren eines Endlosformkörpers |
| DE10025230A1 (de) * | 2000-05-22 | 2000-11-02 | Lurgi Zimmer Ag | Verfahren zum Extrudieren eines Endlosformkörpers |
| DE10060876B4 (de) * | 2000-12-07 | 2006-03-09 | Zimmer Ag | Ausfällvorrichtung für eine Spinnanlage |
| JP4593370B2 (ja) * | 2005-06-02 | 2010-12-08 | 帝人テクノプロダクツ株式会社 | 乾湿式紡糸装置 |
| EP2013385A1 (de) * | 2006-04-28 | 2009-01-14 | Lenzing Aktiengesellschaft | Schmelzblasvliesstoff |
| AT503625B1 (de) | 2006-04-28 | 2013-10-15 | Chemiefaser Lenzing Ag | Wasserstrahlverfestigtes produkt enthaltend cellulosische fasern |
| ES2625035B1 (es) * | 2015-12-18 | 2018-06-21 | Universidad De Extremadura | Producción de chorros capilares viscoelásticos mediante enfocamiento gaseoso |
| EP3470557A1 (de) * | 2017-10-12 | 2019-04-17 | Lenzing Aktiengesellschaft | Spinnvorrichtung und verfahren zum anspinnen einer spinnvorrichtung |
| CN110424423B (zh) * | 2019-08-22 | 2022-02-08 | 深圳市如茵生态环境建设有限公司 | 纤维丝喷丝系统 |
| CN116334778B (zh) * | 2023-05-26 | 2023-07-21 | 吉林富博纤维研究院有限公司 | 一种高性能pan基碳纤维原丝的制备方法 |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1375646A (de) * | 1971-08-30 | 1974-11-27 | ||
| DD271534B5 (de) * | 1988-04-26 | 2002-07-11 | Thueringisches Inst Textil | Verfahren zur Verspinnung von Polymerloesungen |
| PL285328A1 (en) * | 1989-05-31 | 1991-01-28 | Chemiefaser Lenzing Ag | Apparatus for and method of expsing fibre cables to treatment with a liquid |
| 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 |
| JPH07268718A (ja) * | 1994-03-29 | 1995-10-17 | Asahi Chem Ind Co Ltd | 再生セルロース繊維の湿式紡糸法 |
-
1995
- 1995-12-27 AT AT0210795A patent/AT402947B/de not_active IP Right Cessation
-
1996
- 1996-12-20 EP EP96942981A patent/EP0811087B1/de not_active Expired - Lifetime
- 1996-12-20 ES ES96942981T patent/ES2129992T3/es not_active Expired - Lifetime
- 1996-12-20 BR BR9607047A patent/BR9607047A/pt not_active Application Discontinuation
- 1996-12-20 AU AU11857/97A patent/AU1185797A/en not_active Abandoned
- 1996-12-20 CN CN96193341.0A patent/CN1181788A/zh active Pending
- 1996-12-20 JP JP9523913A patent/JPH11501371A/ja active Pending
- 1996-12-20 CA CA002213221A patent/CA2213221A1/en not_active Abandoned
- 1996-12-20 WO PCT/AT1996/000260 patent/WO1997024476A1/de not_active Ceased
- 1996-12-20 DE DE59601184T patent/DE59601184D1/de not_active Expired - Fee Related
- 1996-12-20 AT AT96942981T patent/ATE176011T1/de not_active IP Right Cessation
-
1997
- 1997-08-15 NO NO973763A patent/NO973763L/no not_active Application Discontinuation
Also Published As
| Publication number | Publication date |
|---|---|
| AU1185797A (en) | 1997-07-28 |
| AT402947B (de) | 1997-09-25 |
| WO1997024476A1 (de) | 1997-07-10 |
| JPH11501371A (ja) | 1999-02-02 |
| ATE176011T1 (de) | 1999-02-15 |
| ES2129992T3 (es) | 1999-06-16 |
| CN1181788A (zh) | 1998-05-13 |
| NO973763D0 (no) | 1997-08-15 |
| NO973763L (no) | 1997-08-15 |
| DE59601184D1 (de) | 1999-03-04 |
| CA2213221A1 (en) | 1997-07-10 |
| EP0811087A1 (de) | 1997-12-10 |
| BR9607047A (pt) | 1997-12-30 |
| ATA210795A (de) | 1997-02-15 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| DE69622727T2 (de) | Verfahren zur herstellung einer mischung von cellulosischen fasern und mikrofasern | |
| EP0811087B1 (de) | Verfahren zur herstellung cellulosischer fasern sowie vorrichtung zur durchführung des verfahrens | |
| DE69303711T2 (de) | Anlage und verfahren zur herstellung von vliesstoff aus thermoplastischen filamenten | |
| EP1358369B1 (de) | Verfahren und vorrichtung zur herstellung von im wesentlichen endlosen feinen fäden | |
| DE69637297T2 (de) | Verfahren und vorrichtung zur vliesstoffherstellung | |
| EP0658221B1 (de) | Verfahren zur herstellung cellulosischer fasern sowie vorrichtung zur durchführung des verfahrens | |
| AT406386B (de) | Verfahren und vorrichtung zur herstellung cellulosischer formkörper | |
| DE2048006B2 (de) | Verfahren und Vorrichtung zur Herstellung einer breiten Vliesbahn | |
| DE4040242A1 (de) | Verfahren und vorrichtung zur herstellung von feinstfasern aus thermoplastischen polymeren | |
| EP0584318A1 (de) | Verfahren zur herstellung cellulosischer formkörper sowie vorrichtung zur durchführung des verfahrens. | |
| WO1997033026A1 (de) | Melt-blown-vlies, verfahren zu dessen herstellung und dessen verwendungen | |
| EP0494852A2 (de) | Verfahren zur Herstellung eines cellulosischen Formkörpers | |
| DE60036994T2 (de) | Faservliesstoff aus Polypropylenfaser und Verfahren zu dessen Herstellung | |
| DE68909868T2 (de) | Koagulationsverfahren für Filamente. | |
| EP1280946B1 (de) | Verfahren und vorrichtung zur zugspannungsfreien förderung von endlosformkörpern | |
| DE4219658C2 (de) | Verfahren zur Herstellung von Cellulosefasern -filamenten und -folien nach dem Trocken-Naßextrusionsverfahren | |
| DE3941824C2 (de) | ||
| DE69832724T2 (de) | Verfahren zur herstellung von vliesstoffen aus hochabsorbierender faser | |
| DE60031138T2 (de) | Synthetische faser aus acrylonitril und herstellungsverfahren | |
| EP1268888A1 (de) | Verfahren und vorrichtung zur herstellung von cellulosefasern und cellulosefilamentgarnen | |
| DE1760713A1 (de) | Verfahren und Vorrichtung zum Herstellen eines Wirrfaden-Vlieses aus synthetischen Faeden | |
| WO2005093138A1 (de) | Verfahren und vorrichtung zum schmelzspinnen synthetischer feiner fasern | |
| DE102004007617B4 (de) | Verfahren zur Herstellung eines Vliesstoffes, Vliesstoff und dessen Verwendung | |
| EP0200071A1 (de) | Vorrichtung zur Herstellung von feinen Mineralfasern | |
| WO2006002684A1 (de) | Verfahren zur herstellung einer spinnvliesfaser und spinnvliesfaser |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PUAI | Public reference made under article 153(3) epc to a published international application that has entered the european phase |
Free format text: ORIGINAL CODE: 0009012 |
|
| 17P | Request for examination filed |
Effective date: 19970818 |
|
| AK | Designated contracting states |
Kind code of ref document: A1 Designated state(s): AT BE CH DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE |
|
| AX | Request for extension of the european patent |
Free format text: AL PAYMENT 970818;LT PAYMENT 970818;LV PAYMENT 970818;RO PAYMENT 970818;SI PAYMENT 970818 |
|
| 17Q | First examination report despatched |
Effective date: 19971201 |
|
| GRAG | Despatch of communication of intention to grant |
Free format text: ORIGINAL CODE: EPIDOS AGRA |
|
| GRAG | Despatch of communication of intention to grant |
Free format text: ORIGINAL CODE: EPIDOS AGRA |
|
| GRAH | Despatch of communication of intention to grant a patent |
Free format text: ORIGINAL CODE: EPIDOS IGRA |
|
| GRAH | Despatch of communication of intention to grant a patent |
Free format text: ORIGINAL CODE: EPIDOS IGRA |
|
| GRAA | (expected) grant |
Free format text: ORIGINAL CODE: 0009210 |
|
| AK | Designated contracting states |
Kind code of ref document: B1 Designated state(s): AT BE CH DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE |
|
| AX | Request for extension of the european patent |
Free format text: AL PAYMENT 970818;LT PAYMENT 970818;LV PAYMENT 970818;RO PAYMENT 970818;SI PAYMENT 970818 |
|
| LTIE | Lt: invalidation of european patent or patent extension | ||
| PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: NL Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 19990120 Ref country code: GR Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 19990120 |
|
| REF | Corresponds to: |
Ref document number: 176011 Country of ref document: AT Date of ref document: 19990215 Kind code of ref document: T |
|
| REG | Reference to a national code |
Ref country code: CH Ref legal event code: EP |
|
| REG | Reference to a national code |
Ref country code: IE Ref legal event code: FG4D Free format text: GERMAN |
|
| REF | Corresponds to: |
Ref document number: 59601184 Country of ref document: DE Date of ref document: 19990304 |
|
| ITF | It: translation for a ep patent filed | ||
| PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: PT Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 19990420 Ref country code: DK Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 19990420 |
|
| GBT | Gb: translation of ep patent filed (gb section 77(6)(a)/1977) |
Effective date: 19990401 |
|
| ET | Fr: translation filed | ||
| REG | Reference to a national code |
Ref country code: ES Ref legal event code: FG2A Ref document number: 2129992 Country of ref document: ES Kind code of ref document: T3 |
|
| NLV1 | Nl: lapsed or annulled due to failure to fulfill the requirements of art. 29p and 29m of the patents act | ||
| PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: IE Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 19990820 |
|
| REG | Reference to a national code |
Ref country code: IE Ref legal event code: FD4D |
|
| PGFP | Annual fee paid to national office [announced via postgrant information from national office to epo] |
Ref country code: FR Payment date: 19991123 Year of fee payment: 4 Ref country code: DE Payment date: 19991123 Year of fee payment: 4 |
|
| PGFP | Annual fee paid to national office [announced via postgrant information from national office to epo] |
Ref country code: SE Payment date: 19991125 Year of fee payment: 4 |
|
| PLBE | No opposition filed within time limit |
Free format text: ORIGINAL CODE: 0009261 |
|
| STAA | Information on the status of an ep patent application or granted ep patent |
Free format text: STATUS: NO OPPOSITION FILED WITHIN TIME LIMIT |
|
| PGFP | Annual fee paid to national office [announced via postgrant information from national office to epo] |
Ref country code: FI Payment date: 19991129 Year of fee payment: 4 |
|
| PGFP | Annual fee paid to national office [announced via postgrant information from national office to epo] |
Ref country code: ES Payment date: 19991216 Year of fee payment: 4 |
|
| PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: LU Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 19991220 Ref country code: AT Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 19991220 |
|
| PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: BE Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 19991231 |
|
| 26N | No opposition filed | ||
| BERE | Be: lapsed |
Owner name: LENZING A.G. Effective date: 19991231 |
|
| PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: MC Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20000630 |
|
| PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: GB Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20001220 Ref country code: FI Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20001220 |
|
| PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: SE Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20001221 |
|
| PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: LI Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20001231 Ref country code: CH Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20001231 |
|
| GBPC | Gb: european patent ceased through non-payment of renewal fee |
Effective date: 20001220 |
|
| EUG | Se: european patent has lapsed |
Ref document number: 96942981.0 |
|
| REG | Reference to a national code |
Ref country code: CH Ref legal event code: PL |
|
| PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: FR Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20010831 |
|
| REG | Reference to a national code |
Ref country code: FR Ref legal event code: ST |
|
| PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: DE Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20011002 |
|
| PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: ES Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20011221 |
|
| REG | Reference to a national code |
Ref country code: ES Ref legal event code: FD2A Effective date: 20020112 |
|
| PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: IT Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES;WARNING: LAPSES OF ITALIAN PATENTS WITH EFFECTIVE DATE BEFORE 2007 MAY HAVE OCCURRED AT ANY TIME BEFORE 2007. THE CORRECT EFFECTIVE DATE MAY BE DIFFERENT FROM THE ONE RECORDED. Effective date: 20051220 |