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WO2003014429A1 - Filiere - Google Patents

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Info

Publication number
WO2003014429A1
WO2003014429A1 PCT/EP2002/009314 EP0209314W WO03014429A1 WO 2003014429 A1 WO2003014429 A1 WO 2003014429A1 EP 0209314 W EP0209314 W EP 0209314W WO 03014429 A1 WO03014429 A1 WO 03014429A1
Authority
WO
WIPO (PCT)
Prior art keywords
nozzle plates
spinning
frame
spinneret
sides
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.)
Ceased
Application number
PCT/EP2002/009314
Other languages
English (en)
Inventor
Ulrich Matthias Libera
Günter FRISCHMANN
Ulrich Wigand Wachsmann
Ulrich Günther HAHN
Christian Peter Norhausen
Hans Georg Connor
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 Fibers Ltd
Original Assignee
Tencel Ltd
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 Tencel Ltd filed Critical Tencel Ltd
Publication of WO2003014429A1 publication Critical patent/WO2003014429A1/fr
Anticipated expiration legal-status Critical
Ceased 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
    • D01D4/00—Spinnerette packs; Cleaning thereof
    • 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 spinneret for spinning cellulosic filaments from a cellulose solution in a solvent, the spinneret having a plurality of nozzle plates which each have a plurality of holes for the spinning of filaments, and the nozzle plates being located in a quadrilateral frame surrounding them on all sides.
  • the invention also relates to a nozzle block containing such a spinneret.
  • a spinneret of the type defined above is known from EP-A- 0,756,025. That document discloses a spinneret with several flat perforated plates of metal which each have several holes for the spinning of filaments. The perforated plates in that case have been fitted on all sides in a frame section of stainless steel. Preferably, the frame section of EP-A-0,756,025 has a flange projecting outwards on the end opposite the perforated plates.
  • EP-A-0, 700,456 proposes a spinning head for spinning cellulose filaments from a solution of cellulose in a solvent, the spinning head having a frame element and a plate with holes supported thereby, through which holes the solution passes and forms filaments.
  • the holes in a first area of the plate lying closest to the frame element have a larger diameter at their narrowest point than in another area of the plate which is further removed from the frame element.
  • the cellulosic starting material is dissolved in an appropriate solvent at elevated temperature, generally at about 70 to 130°C.
  • the preferred solvent is a tertiary amine N-oxide and, optionally, water.
  • the solution of cellulose in the tertiary amine N-oxide and, optionally, water is extruded in the hot state with the aid of a spinneret and is formed (shaped) in the extrusion process.
  • the solution shaped in this way is passed to an aqueous coagulation bath, where the tertiary amine N-oxide is extracted from the shaped solution and the cellulose precipitates in the shaped state.
  • aqueous coagulation bath Between the spinneret and the coagulation bath cooling and drawing of the shaped solution generally takes place in a so-called air gap.
  • the cooling can take place with only the aid of the ambient air, but generally cooling takes place with the aid of an additional blown-in gaseous medium, in most cases with blown-in air.
  • the practice often also generates a non-uniform spinning pattern, e.g. as a result of turbulence, and this has a negative effect on the quality of the filaments obtained.
  • the present invention seeks to provide a spinneret for spinning cellulosic filaments from a cellulose solution in a solvent, which spinneret, especially at high throughput and high speed, ensures a good uniformity of the filaments and at least reduces problems associated with the prior art spinnerets.
  • a spinneret of the type described in the opening paragraph which is characterised in that the nozzle plates located in the frame have the shape of a quadrilateral of which the respective opposite sides are of the same length and parallel to one another and of which the contiguous sides form an angle different from 90°.
  • the frame and the nozzle plates are made of metal, for example of stainless steel.
  • the spinneret and the nozzle plates or perforated plates located therein thus have a quadrilateral shape, with the nozzle plates forming quadrilaterals which do not possess only right angles.
  • quadrilateral is used in the broad sense here, that is to say it of course also includes geometric structures which have one or more (up to four) "rounded" corners. In such cases the two contiguous sides which are connected to one another by means of such a rounding should notionally simply be extended linearly until at their point of intersection they once again form a "sharp" corner, the angle of which can be determined in the usual manner.
  • Quadrilaterals where the opposite sides are of the same length and parallel are called parallelograms in geometry. Further properties of parallelograms are that the angles opposite to one another are equal in size and that the diagonals bisect one another.
  • the quadrilaterals constituting the frame and the nozzle plates located in this frame have the shape of elongate parallelograms, with the contiguous sides of the parallelograms having different lengths, the individual nozzle plates being located in the frame with their respective longer sides parallel to one another and with their respective shorter sides parallel to the longer sides of the frame.
  • Such an embodiment is for example provided by means of a rectangular frame of which the length is greater than its width.
  • the respective opposite sides of the frame are of the same length and parallel, the contiguous sides, however, are of a different length.
  • the individual nozzle plates for which likewise the respective contiguous sides are of different lengths, may be so arranged that the nozzle plates are parallel to one another and parallel to the respective longer sides.
  • the nozzle plates in this preferred embodiment are positioned such that they are aligned with the respective shorter sides parallel to the longer sides of the frame. In this case it is especially desirable if the shorter sides of the adjacent individual nozzle plates are aligned with one another.
  • the nozzle plates have holes for the spinning of filaments. These holes are preferably arranged in the nozzle plates in such a way that they form at least one row which runs parallel to at least one of the sides of the quadrilaterals constituting the nozzle plates. It is even more preferred if the holes for the spinning of filaments are arranged in the nozzle plates in such a way that they form a plurality of rows which run parallel to one another and . parallel to the respective shorter sides of the quadrilaterals constituting the individual nozzle plates.
  • the holes are positioned in the nozzle plate in such a way that they form rows parallel to one another, which run parallel to the shorter and longer sides of the quadrilaterals constituting the nozzle plates.
  • the rows of spinning holes which run parallel to the shorter sides of the nozzle plates can be called “rows”, while the rows of spinning holes which run parallel to the longer sides of the nozzle plates can be called “columns”.
  • the spinning holes Arranged in rows and columns and at the same time parallel to the boundary sides of the nozzle plates, the spinning holes thus form a matrix structure.
  • an imaginary line perpendicular to the longer side of the frame in which the nozzle plates are located could be drawn in such a way that it runs through the outermost hole of the first row of spinning holes in a nozzle plate A.
  • the line is continued, then in this example it also runs through the outermost hole of the last row of spinning holes of the nozzle plate B positioned immediately adjacent to the nozzle plate A and aligned parallel to its longer sides.
  • the nozzle plates thus are at an incline vis-a-vis the shorter sides of the frame in which they have been arranged. It is preferred that the longer sides of the individual nozzle plates are tilted towards the shorter sides of the frame by from about 2° to about 8°, for instance about 4°, away from the perpendicular. Because of this tilted arrangement a very even flow around the filaments in the air gap is achieved. This also holds true for the filaments which are on the opposite side to the blowing-in side, i.e. furthest removed therefrom.
  • the invention also provides a spinneret for spinning cellulosic filaments from a cellulose solution in a solvent, the spinneret having a plurality of quadrilateral nozzle plates each of which has a plurality of holes for the spinning of filaments, the nozzle plates being located in a frame surrounding them on all sides, characterised in that the holes for the spinning of filaments have each been so arranged within the nozzle plates that they form one or more rows which are tilted towards the sides constituting the nozzle plates.
  • the nozzle plates may be aligned straight throughout, i.e. with a tilt of 0° towards the sides of the frame in which they are located.
  • the holes for the spinning of filaments form one or more rows within the nozzle plates. These rows, or an imaginary line drawn through these rows, in this case show(s) a tilt towards the sides of the nozzle plate, preferably of about 2° to about 8°, for example of about 4°, away from the perpendicular.
  • the holes When the holes are arranged in several rows parallel to one another, then they form a hole pattern which may have the shape of a quadrilateral of which the respective opposite sides are of the same length and parallel and of which the contiguous sides form an angle which differs from 90°.
  • the holes themselves thus can be arranged in such a way that they form a hole pattern within the nozzle plates in which they have been placed which takes on the shape of a parallelogram, as already described.
  • the parallelogram is formed by the imaginary connection of the respective outer rows and columns of the holes for the spinning of filaments.
  • Such a spinneret has the advantage that it can be obtained also by modification of an already existing spinneret where the nozzle plates and the rows of holes are not tilted towards the frame in which they have been placed. This can for example be done by means of a simple sealing of holes already present, for instance by welding them shut, in such a way that the remaining holes in the nozzle plates form rows corresponding with the required tilt towards the sides forming the nozzle plates.
  • the number of nozzle plates located within the frame ordinarily is not subject to any restrictions. However, for the spinnerets of the invention it is preferred when up to 100, preferably 30 to 60, nozzle plates are located within a frame.
  • the individual nozzle plates in the case of the spinnerets claimed have from 10 to 1000, preferably from 20 to 300, more preferably from 30 to 90, holes for the spinning of filaments.
  • the invention furthermore includes a nozzle block which contains a heatable top housing, a screen packing, a breaker (distributor) plate, and a spinneret according to the invention.
  • the nozzle block is designed to be supplied by only one spinning pump, i.e. the supply of the cellulose solution to the nozzle block takes place with a single pump.
  • Each nozzle plate within the spinneret in that case corresponds to one thread or multifilament composed of the number of filaments resulting from the number of spinning holes in this nozzle plate.
  • the spinning mass is filtered before it is conveyed to the spinning block.
  • candle filters for example metal wool filters with a fineness between 5 and 100 ⁇ m, have proved useful.
  • appropriate solvents e.g. tertiary amine N-oxide and, optionally, water
  • the heatable top housing of the nozzle block can be heated, for example by means of low-pressure steam heating.
  • a screen packing which may for instance be made up of a braided fabric of metal with a fineness between 15 and 40 ⁇ m.
  • This screen packing lies directly on a breaker plate, which is followed by the actual spinneret, which consists of the above-described frame and the nozzle plates.
  • the nozzle plates have desirably been welded into the frame.
  • the nozzle block is, for example, made of stainless high-grade steel.
  • the heatable top housing of the nozzle block serves to provide even distribution of the dope over the entire length and width of the spinneret.
  • the dope may be carried to the centre of the top housing, for instance via a flexible metal tube.
  • the volume of the top housing is preferably kept small, because the dope at elevated temperatures and longer residence times has a tendency towards decomposition reactions.
  • the residence time must be long enough to keep the dope at a constant temperature over the entire length and width. In this way it is ensured that the dope stream is very uniform. Every hole in the nozzle plate thus receives the same amount of cellulose solution arid the resulting filaments or threads have very high uniformity, which becomes noticeable especially with regard to dye uptake or uniformity in dye absorption (affinity).
  • the skilled person is in a position to determine the dimensions of the top housing through simple experiments and corresponding rheological calculations.
  • the top housing there is the breaker plate with the wire gauze lying thereon.
  • the wire gauze or screen packing serves for a final filtration before the spinneret and protects the relatively fine spinning holes in the nozzle plates from dirt contamination.
  • the holes for the spinning of filaments preferably have a diameter from 30 to 200 ⁇ m, more preferably from 60 to 130 ⁇ m.
  • the flow-pressure drop caused by the wire gauze serves to increase the dope uniformity as regards pressure, temperature and homogeneity over the length and width of the entire spinneret.
  • the breaker plate likewise serves to make the dope uniform as regards pressure, temperature and homogeneity over the length and width of the entire spinneret as well as to support the wire gauze.
  • the breaker plate is made of a highly thermally conductive material. Unlike in the case of the commonly used breaker or support plates, the temperature of the dope can be made uniform even at right angles (transversely) to the direction of flow and thus across all spinning positions when highly thermally conductive materials are used. It is preferred in that case to make use of materials for the breaker plate of which the specific thermal conductivity is above about 50 W/(m*K), preferably above about 80 W/(m*K ⁇ Examples of such materials are silicon carbide (about 100 W/(m*K)), certain copper alloys, e.g. CuZn 38 Sn 1 (about 135 W/(m*K)), or else even aluminium alloys, such as AIMg 1 Si 0.5 (about 200 W/(m*K)).
  • the nozzle plates are generally welded individually into the frame.
  • the nozzle plates of the spinneret according to the invention preferably are flat and have a thickness in that case of from 1 to 3 mm, preferably about 1.5 to 2 mm, and are designed for pressures above about 60 bar.
  • Figure 1 is a schematic figure which shows a nozzle block containing an embodiment of the spinneret according to the invention in cross-section
  • Figure 2 is a schematic figure which shows an embodiment of the spinneret according to the invention in plan view from above.
  • Fig. 1 shows a nozzle block with an inlet 1 for the dope.
  • the dope is supplied to the centre of a heatable top part 2 (top housing) of the spinning block.
  • a wire gauze 3 Connected to the top housing 2 is a wire gauze 3, which is situated on a breaker (distributor) plate 4.
  • Quadrilateral nozzle plates 5 are placed in a heatable nozzle frame 7 and are separated from one another by lands 6. These lands 6 at the same time serve as reinforcement for the breaker plate 4.
  • a spinneret containing the nozzle frame 7 and the nozzle plates 5 is shown in top view. Furthermore, rows 8 of holes for the spinning of filaments and columns 9 of these spinneret holes are shown. It can be seen that the rows 8 of these holes run in each case parallel to the shorter sides of the nozzle plates 5 while the columns of the holes for the spinning of filaments run in each case parallel to the longer sides of the nozzle plates 5. The columns 9 and rows 8 of the holes for the spinning of filaments form an elongate parallelogram.
  • Fig. 2 a spinneret containing the nozzle frame 7 and the nozzle plates 5 is shown in top view. Furthermore, rows 8 of holes for the spinning of filaments and columns 9 of these spinneret holes are shown. It can be seen that the rows 8 of these holes run in each case parallel to the shorter sides of the nozzle plates 5 while the columns of the holes for the spinning of filaments run in each case parallel to the longer sides of the nozzle plates 5. The columns 9 and rows 8 of the holes for the spinning of filaments form an
  • the nozzle plates and the holes therein are not so arranged - as especially preferred - that an imaginary line drawn perpendicular to one of the respective longer sides of the nozzle frame 7 and running through a corner hole of a nozzle plate 5 likewise runs through a corner hole of the adjacent nozzle plate 5.

Landscapes

  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • General Chemical & Material Sciences (AREA)
  • Spinning Methods And Devices For Manufacturing Artificial Fibers (AREA)

Abstract

L'invention concerne une filière destinée au filage de filaments de cellulose à partir d'une solution de cellulose, dans un solvant. La filière selon l'invention comprend une pluralité de plaques de buses (5) présentant chacune une pluralité de trous qui permettent le filage des filaments, ces plaques de buses (5) étant disposées dans un cadre quadrilatéral (7) entourant ces plaques de tous les côtés. Cette filière se caractérise en ce que les plaques de buses (5) disposées dans le cadre (7) présentent des formes de quadrilatères dont les côtés opposés respectifs sont de la même longueur et parallèles, et dont les côtés adjacents forment un angle différent de 90°.
PCT/EP2002/009314 2001-08-11 2002-08-09 Filiere Ceased WO2003014429A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE10139678.3 2001-08-11
DE10139678 2001-08-11

Publications (1)

Publication Number Publication Date
WO2003014429A1 true WO2003014429A1 (fr) 2003-02-20

Family

ID=7695275

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/EP2002/009314 Ceased WO2003014429A1 (fr) 2001-08-11 2002-08-09 Filiere

Country Status (1)

Country Link
WO (1) WO2003014429A1 (fr)

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN100557093C (zh) * 2006-11-03 2009-11-04 东华大学 溶剂法纤维素纤维纺丝的复合喷丝板
EP2119816A1 (fr) * 2008-05-14 2009-11-18 ALBIS Spa Filière comportant des orifices de filature à deux lobes
EP3467161A1 (fr) 2017-10-06 2019-04-10 Lenzing Aktiengesellschaft Procédé de production d'un filament de cellulose de type lyocell
WO2019068927A1 (fr) 2017-10-06 2019-04-11 Lenzing Aktiengesellschaft Filament lyocell ignifuge
WO2019198397A1 (fr) * 2018-04-11 2019-10-17 東レ株式会社 Filière et procédé de fabrication de bande fibreuse
EP3674454A1 (fr) 2018-12-28 2020-07-01 Lenzing Aktiengesellschaft Procédé de filament de cellulose
EP3674452A1 (fr) 2018-12-28 2020-07-01 Lenzing Aktiengesellschaft Filière, procédé de chauffage d'une filière et procédé lyocell
RU2786924C1 (ru) * 2018-12-28 2022-12-26 Ленцинг Актиенгеселльшафт Фильерный комплект, способ нагрева фильерного комплекта и процесс получения лиоцелла

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DD213699A1 (de) * 1983-02-18 1984-09-19 Engels Chemiefaserwerk Veb Rechteckduesenplatte fuer schmelzspinnverfahren
JPH0473251A (ja) * 1990-07-14 1992-03-09 Oji Paper Co Ltd 不織ウェッブ製造用紡糸装置
WO1994028210A1 (fr) * 1993-05-24 1994-12-08 Courtaulds Fibres (Holdings) Limited Filiere
WO1994028209A1 (fr) * 1993-05-24 1994-12-08 Courtaulds Fibres (Holdings) Limited Ensemble de jets

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DD213699A1 (de) * 1983-02-18 1984-09-19 Engels Chemiefaserwerk Veb Rechteckduesenplatte fuer schmelzspinnverfahren
JPH0473251A (ja) * 1990-07-14 1992-03-09 Oji Paper Co Ltd 不織ウェッブ製造用紡糸装置
WO1994028210A1 (fr) * 1993-05-24 1994-12-08 Courtaulds Fibres (Holdings) Limited Filiere
WO1994028209A1 (fr) * 1993-05-24 1994-12-08 Courtaulds Fibres (Holdings) Limited Ensemble de jets
EP0700456A1 (fr) * 1993-05-24 1996-03-13 Courtaulds Fibres (Holdings) Limited Filiere
EP0756025A2 (fr) * 1993-05-24 1997-01-29 Courtaulds Fibres (Holdings) Limited Filière

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
PATENT ABSTRACTS OF JAPAN vol. 016, no. 283 (C - 0955) 24 June 1992 (1992-06-24) *

Cited By (24)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN100557093C (zh) * 2006-11-03 2009-11-04 东华大学 溶剂法纤维素纤维纺丝的复合喷丝板
EP2119816A1 (fr) * 2008-05-14 2009-11-18 ALBIS Spa Filière comportant des orifices de filature à deux lobes
EP3467161A1 (fr) 2017-10-06 2019-04-10 Lenzing Aktiengesellschaft Procédé de production d'un filament de cellulose de type lyocell
WO2019068927A1 (fr) 2017-10-06 2019-04-11 Lenzing Aktiengesellschaft Filament lyocell ignifuge
WO2019068922A1 (fr) 2017-10-06 2019-04-11 Lenzing Aktiengesellschaft Procédé de production de filament de cellulose de type lyocell
US11414786B2 (en) 2017-10-06 2022-08-16 Lenzing Aktiengesellschaft Cellulose filament process
JPWO2019198397A1 (ja) * 2018-04-11 2021-03-11 東レ株式会社 紡糸口金および繊維ウェブの製造方法
WO2019198397A1 (fr) * 2018-04-11 2019-10-17 東レ株式会社 Filière et procédé de fabrication de bande fibreuse
JP7147750B2 (ja) 2018-04-11 2022-10-05 東レ株式会社 紡糸口金および繊維ウェブの製造方法
KR20210107105A (ko) * 2018-12-28 2021-08-31 렌징 악티엔게젤샤프트 방사구, 방사구를 가열하는 방법, 및 라이오셀 프로세스
EP3674454A1 (fr) 2018-12-28 2020-07-01 Lenzing Aktiengesellschaft Procédé de filament de cellulose
CN113227470A (zh) * 2018-12-28 2021-08-06 连津格股份公司 喷丝板、加热喷丝板的方法和莱赛尔纤维方法
WO2020136108A1 (fr) 2018-12-28 2020-07-02 Lenzing Aktiengesellschaft Procédé de production de filament de cellulose
JP2022515535A (ja) * 2018-12-28 2022-02-18 レンチング アクチエンゲゼルシャフト 紡糸口金、紡糸口金の加熱方法及びリヨセル製造方法
US20220074074A1 (en) * 2018-12-28 2022-03-10 Lenzing Aktiengesellschaft Spinneret, method of heating a spinneret and lyocell process
EP3674452A1 (fr) 2018-12-28 2020-07-01 Lenzing Aktiengesellschaft Filière, procédé de chauffage d'une filière et procédé lyocell
WO2020136118A1 (fr) 2018-12-28 2020-07-02 Lenzing Aktiengesellschaft Filière, procédé de chauffage d'une filière et procédé lyocell
CN113227470B (zh) * 2018-12-28 2022-12-13 连津格股份公司 喷丝板、加热喷丝板的方法和莱赛尔纤维方法
RU2786924C1 (ru) * 2018-12-28 2022-12-26 Ленцинг Актиенгеселльшафт Фильерный комплект, способ нагрева фильерного комплекта и процесс получения лиоцелла
JP7229366B2 (ja) 2018-12-28 2023-02-27 レンチング アクチエンゲゼルシャフト 紡糸口金、紡糸口金の加熱方法及びリヨセル製造方法
KR102525531B1 (ko) * 2018-12-28 2023-04-24 렌징 악티엔게젤샤프트 방사구, 방사구를 가열하는 방법, 및 라이오셀 프로세스
US11898272B2 (en) 2018-12-28 2024-02-13 Lenzing Aktiengesellschaft Cellulose filament process
US12129573B2 (en) * 2018-12-28 2024-10-29 Lenzing Aktiengesellschaft Spinneret, method of heating a spinneret and lyocell process
TWI878256B (zh) 2018-12-28 2025-04-01 奧地利商藍晶股份公司 製造萊纖長纖的方法

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