EP0662166B1 - Spinndüse - Google Patents

Spinndüse Download PDF

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Publication number
EP0662166B1
EP0662166B1 EP94921520A EP94921520A EP0662166B1 EP 0662166 B1 EP0662166 B1 EP 0662166B1 EP 94921520 A EP94921520 A EP 94921520A EP 94921520 A EP94921520 A EP 94921520A EP 0662166 B1 EP0662166 B1 EP 0662166B1
Authority
EP
European Patent Office
Prior art keywords
spinning
cellulose
insert
holes
cooling gas
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
EP94921520A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP0662166A1 (de
Inventor
Stefan Zikeli
Friedrich Ecker
Ernst Rauch
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 EP0662166A1 publication Critical patent/EP0662166A1/de
Application granted granted Critical
Publication of EP0662166B1 publication Critical patent/EP0662166B1/de
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • D—TEXTILES; PAPER
    • D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
    • 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
    • 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
    • D01D5/08—Melt spinning methods
    • D01D5/088—Cooling filaments, threads or the like, leaving the spinnerettes
    • 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 cellulose solutions according to the preamble of claim 1, known for example from DE-B-1 250 961 and the use of this spinneret.
  • tertiary amine oxides can dissolve cellulose and that cellulosic fibers can be obtained from these solutions by precipitation.
  • a method for producing such solutions is known for example from EP-A - 0 356 419.
  • a suspension of cellulose in an aqueous tertiary amine oxide is first prepared.
  • the amine oxide contains up to 40% by mass of water.
  • the aqueous cellulose suspension is heated and water is drawn off under reduced pressure until the cellulose dissolves.
  • the process is carried out in a specially developed, evacuable stirring device.
  • a method of the type mentioned at the outset is known from DE-A-28 30 685, according to which a solution of cellulose in a tertiary amine oxide is formed into filaments in the warm state, the filaments are cooled with air and then introduced into a precipitation bath in order to dissolve them To cut down cellulose. The surface of the spun threads is further wetted with water to reduce their tendency to stick to adjacent threads.
  • the spinneret according to the invention for spinning cellulose solutions has an essentially rotationally symmetrical nozzle body which has a feed for cooling gas in its center, a feed for cellulose solutions, an annular, deep-drawn spinning insert made of precious metal with spinning holes which are arranged at a constant distance from one another, which spinning insert is trough-shaped in cross section, and a baffle plate for directing the cooling gas flow onto cellulose filaments which are extruded from the spinning holes, so that the cooling gas flow meets the extruded cellulose filaments essentially perpendicularly.
  • the textile properties of the fibers can be influenced by blowing with an inert gas, preferably air.
  • the cooling process of the filament emerging from the spinneret affects not only the thread quality but also the stretching and elongation of the filaments. Fibers with uniform properties can thus be produced if the freshly extruded filaments are blown with a cooling gas stream which has as little turbulence as possible, that is to say is largely laminar.
  • the present invention is based on the knowledge that this method can be further improved if the spinning device used is designed in such a way that the cooling gas stream remains as laminar as possible even when it passes through the thread structure, that is to say when the freshly extruded cellulose filaments cool. This is ensured if the spinning holes are arranged so that they are at a uniform distance from one another. In this way, it is also possible to spin with hole densities of more than 3.9 holes per mm without individual filaments sticking together.
  • a preferred embodiment of the spinneret according to the invention is characterized in that it contains a spinning insert, the spinning holes of which are arranged on at least three concentric circles, at a constant distance from one another, the spinning holes on the concentric circles being best arranged from a radial point of view.
  • a particularly preferred embodiment of the spinneret according to the invention has a spinning insert with at least 0.48 spinning holes per mm.
  • a gold / platinum alloy has proven to be the best material for spinning.
  • the invention also relates to the use of the spinneret according to the invention for spinning solutions of cellulose in a tertiary amine oxide, N-methylmorpholine-N-oxide advantageously being used as the tertiary amine oxide.
  • FIG. 1 shows schematically an embodiment of the spinneret according to the invention in section
  • FIG. 2 shows schematically on an enlarged scale a section of the ring-shaped spinning insert with the spinning holes.
  • 1 denotes a heatable (heating, not shown) spinneret body, which via the feed 3 with spinning mass, i.e. warm cellulose solution at a temperature of about 100 ° C (shown schematically in Figure 1 with an arrow) is charged.
  • the annular, deep-drawn spinning insert with the spinning holes 6 is designated by 4.
  • This spinning insert 4 is trough-shaped and inserted into the nozzle body, which is designed in a step-like manner in order to carry the spinning insert 4.
  • a section of the spinning insert 4 is shown schematically in FIG. 2, looking towards the spinning direction.
  • Fig. 2 are shown with 6 spinning holes, which are arranged on four circular paths k1, k2, k3 and k4.
  • the spinning holes are arranged in the radial direction on a gap and spaced uniformly from one another.
  • An exemplary embodiment of such a spinning insert 4 consists of an alloy of 70% gold and 30% platinum, has a diameter of 135 mm, is 1 mm thick, and the drilled ring part has a width of 15 mm.
  • the hole spacing is a uniform 0.50 mm, and the holes are drilled in a row in 19 rows of holes. In this way, more than 15,000 spinning holes can be accommodated.
  • a filter ring 8 is located above the spinning insert 4.
  • the filter ring 8 and the spinning insert 4 are appropriately sealed against the nozzle body (not shown).
  • the feed 3 for spinning mass can be annular. However, it is also possible to supply spinning material to the spinning body 1 only at a few points, provided that the spinning body is designed in such a way that the spinning material can be distributed evenly over the entire spinning insert 4.
  • the thread structure extruded from the spinning holes 6 is designated by the reference number 7.
  • the thread assembly 7 passes through an air gap, which is due to the distance between the spinning holes 6
  • Surface of the precipitation bath (not shown) is defined in the precipitation bath and is peeled off.
  • the extruded thread bandage 7 is cooled with air, which is shown schematically in the figure with a dashed arrow. A delay is achieved in that the thread assembly 7 is pulled off at a higher speed than it leaves the spinning holes 6.
  • the gas flow is practically not subject to eddy formation when it passes through the thread structure, which has a positive effect on the entire spinning process and on the properties of the cellulose fibers formed.
  • the spinning holes are grouped together, for example, and are not evenly distributed, as a result of which there is no uniform hole / hole spacing, since there are free areas between the individual, grouped thread groups, the cooling gas cannot flow through the thread group without turbulence. This can adversely affect the spinning process.
  • a cellulose solution prepared according to the process described in EP-A-0 356 419 was filtered and spun in the warm state with the spinneret shown schematically in FIG.
  • the device had an inner diameter of the tubular feed 2 for cooling gas of 44 mm and a diameter of the baffle plate 5 of 104 mm.
  • the angles ⁇ and ⁇ were each 5 °; the total opening angle ⁇ was thus 10 °.
  • the table shows the mass of cellulose solution spun per hour (kg / h), its composition (mass%), its temperature (° C) during spinning, the width of the spinning insert (mm), the number of spinning holes, the hole density (hole / m), the diameter of the spinning holes ( ⁇ ), the fiber distortion, the supply of cooling air (m3 / h), its temperature (° C), the temperature (° C) of the internal cooling air discharged, the NMMO content of the precipitation bath ( Mass% NMMO) and the final titer of the fibers produced (dtex).

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)
  • Nozzles (AREA)
  • Artificial Filaments (AREA)
  • Fuel-Injection Apparatus (AREA)
EP94921520A 1993-07-28 1994-07-12 Spinndüse Expired - Lifetime EP0662166B1 (de)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
AT1497/93 1993-07-28
AT0149793A AT402738B (de) 1993-07-28 1993-07-28 Spinndüse
PCT/AT1994/000090 WO1995004173A1 (de) 1993-07-28 1994-07-12 Spinndüse

Publications (2)

Publication Number Publication Date
EP0662166A1 EP0662166A1 (de) 1995-07-12
EP0662166B1 true EP0662166B1 (de) 1996-03-20

Family

ID=3515126

Family Applications (1)

Application Number Title Priority Date Filing Date
EP94921520A Expired - Lifetime EP0662166B1 (de) 1993-07-28 1994-07-12 Spinndüse

Country Status (18)

Country Link
US (1) US5650112A (sh)
EP (1) EP0662166B1 (sh)
JP (1) JPH08502558A (sh)
CN (1) CN1039040C (sh)
AT (2) AT402738B (sh)
AU (1) AU682704B2 (sh)
BR (1) BR9405533A (sh)
DE (2) DE59400169D1 (sh)
DK (1) DK0662166T3 (sh)
ES (1) ES2086249T3 (sh)
GB (1) GB2285240B (sh)
GR (1) GR3019615T3 (sh)
SI (1) SI0662166T1 (sh)
TR (1) TR27836A (sh)
TW (1) TW257797B (sh)
WO (1) WO1995004173A1 (sh)
YU (1) YU48668B (sh)
ZA (1) ZA944767B (sh)

Families Citing this family (22)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
TR28441A (tr) * 1993-05-24 1996-07-04 Courtaulds Fibres Holdings Ltd Liyosel filamentlerinin pihtilastirilmasinda kullanilabilen egirme hücreleri.
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
GB2289012B (en) * 1994-04-30 1998-08-12 Philip Trevor Slack Improvements in or relating to synthetic filaments
US5984655A (en) * 1994-12-22 1999-11-16 Lenzing Aktiengesellschaft Spinning process and apparatus
ATA239194A (de) * 1994-12-22 1996-02-15 Chemiefaser Lenzing Ag Vorrichtung zur durchführung eines trocken-/nassspinnverfahrens
GB9500387D0 (en) * 1995-01-10 1995-03-01 Courtaulds Fibres Ltd Manufacture of extruded articles
DE19544662A1 (de) * 1995-11-30 1997-06-05 Rieter Automatik Gmbh Schmelzespinnvorrichtung
GB9607456D0 (en) * 1996-04-10 1996-06-12 Courtaulds Fibres Holdings Ltd Spinning of filaments
AT405531B (de) 1997-06-17 1999-09-27 Chemiefaser Lenzing Ag Verfahren zur herstellung cellulosischer fasern
US6117379A (en) * 1998-07-29 2000-09-12 Kimberly-Clark Worldwide, Inc. Method and apparatus for improved quenching of nonwoven filaments
DE19842556C2 (de) 1998-09-17 2003-02-06 Alceru Schwarza Gmbh Verfahren zur Herstellung von cellulosischen Formkörpern
DE19842557C1 (de) 1998-09-17 2000-03-23 Alceru Schwarza Gmbh Verfahren zur Herstellung cellulosischer Formkörper
DE10206089A1 (de) 2002-02-13 2002-08-14 Zimmer Ag Bersteinsatz
AT413545B (de) * 2003-07-14 2006-03-15 Chemiefaser Lenzing Ag Verfahren zur herstellung cellulosischer formkörper
DE102004024065A1 (de) * 2004-05-13 2005-12-08 Zimmer Ag Verfahren zum Herstellen von Endlosformkörpern und Spinnkopf
DE102005040000B4 (de) * 2005-08-23 2010-04-01 Lenzing Ag Mehrfachspinndüsenanordnung und Verfahren mit Absaugung und Beblasung
EP2565303A1 (de) * 2011-09-02 2013-03-06 Aurotec GmbH Extrusionsverfahren
TWI667378B (zh) 2014-01-03 2019-08-01 奧地利商蘭精股份有限公司 纖維素纖維
DE102016004715A1 (de) * 2016-04-19 2017-10-19 Oerlikon Textile Gmbh & Co. Kg Vorrichtung zum Abkühlen einer ringförmigen extrudierten Filamentschar
AU2017257537B2 (en) 2016-04-25 2022-08-11 Cytec Industries Inc. Spinneret assembly for spinning polymeric fibers
DE102019109069A1 (de) 2018-04-09 2019-10-10 Thüringisches Institut für Textil- und Kunststoff-Forschung e.V. Verfahren zum Spinnen von Polyacrylnitrilfasern aus Lösungen
EP3702496A1 (de) * 2019-02-26 2020-09-02 Lenzing Aktiengesellschaft Formwerkzeug und verfahren zur herstellung eines formwerkzeugs zur extrusion cellulosischer formkörper

Family Cites Families (57)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE218121C (sh) *
US1934618A (en) * 1928-08-13 1933-11-07 Celanese Corp Treatment of cellulose derivatives
US2131810A (en) * 1929-10-07 1938-10-04 Celanese Corp Treatment of cellulose derivatives
US1933587A (en) * 1930-01-01 1933-11-07 Celanese Corp Production of artificial filaments or threads
US2179181A (en) * 1936-04-21 1939-11-07 Soc Of Chemical Ind Cellulose solutions and process of making same
US2222797A (en) * 1937-01-07 1940-11-26 Dreyfus Henry Manufacture of artificial filaments and the like
US2284028A (en) * 1939-09-26 1942-05-26 Ubbelohde Leo Dry spinning process
NL61622C (sh) * 1942-10-06
DE1250961B (sh) * 1956-05-14 1967-09-28
GB807248A (en) * 1957-01-15 1959-01-14 Dow Chemical Co Method for spinning polyolefines
US3118012A (en) * 1959-05-01 1964-01-14 Du Pont Melt spinning process
GB957534A (en) * 1962-01-18 1964-05-06 British Nylon Spinners Ltd Improvements in or relating to melt-spinning synthetic polymer filaments
IL21472A (en) * 1963-06-06 1968-02-26 Monsanto Co Wet-spinning of synthetic vinyl polymers
US3299469A (en) * 1964-11-18 1967-01-24 Du Pont Melt-spinning apparatus
US3619452A (en) * 1969-03-07 1971-11-09 Allied Chem Filament quenching apparatus and process
DE2113327A1 (de) * 1971-03-19 1972-10-12 Reifenhaeuser Kg Vorrichtung zur Herstellung von schmelzgesponnenen Fasern
US3969462A (en) * 1971-07-06 1976-07-13 Fiber Industries, Inc. Polyester yarn production
US3858386A (en) * 1971-07-06 1975-01-07 Fiber Industries Inc Polyester yarn production
US4038357A (en) * 1972-06-28 1977-07-26 Imperial Chemical Industries Inc. Manufacture of synthetic filaments
US3836346A (en) * 1973-08-17 1974-09-17 Owens Corning Fiberglass Corp Apparatus for producing fibrous material
AU488454B2 (en) * 1974-11-13 1976-01-24 Owens-Corning Fiberglas Corporation Method and apparatus for processing glass
US3996321A (en) * 1974-11-26 1976-12-07 E. I. Du Pont De Nemours And Company Level control of dry-jet wet spinning process
DE2459785C2 (de) * 1974-12-18 1980-10-16 Reifenhaeuser Kg, 5210 Troisdorf Innenkühlvorrichtung für Kunststoffschlauchfolien, die einem an eine Schneckenstrangpresse anschließbaren Blaskopf mit Ringspaltdüse nachgeschaltet ist
DE2555848A1 (de) * 1975-12-11 1977-06-23 Windmoeller & Hoelscher Kuehlvorrichtung fuer mittels eines folienblaskopfes hergestellte kunststoff-schlauchfolien mit luftkuehlung
FR2372251A1 (fr) * 1976-11-26 1978-06-23 Rhone Poulenc Textile Nouveau procede de filage ou mise en forme de solutions de cellulose et articles ainsi obtenus
US4078034A (en) * 1976-12-21 1978-03-07 E. I. Du Pont De Nemours And Company Air gage spinning process
US4115048A (en) * 1976-12-27 1978-09-19 Union Carbide Corporation Apparatus for internally cooling a plastic tubular film bubble
US4144080A (en) * 1977-07-26 1979-03-13 Akzona Incorporated Process for making amine oxide solution of cellulose
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
US4285646A (en) * 1980-05-13 1981-08-25 Fiber Industries, Inc. Apparatus for quenching melt-spun filaments
EP0040482B1 (en) * 1980-05-13 1984-08-08 Celanese Corporation Process and apparatus for melt spinning filaments in which quench gas and finishing liquid are introduced to the filaments through the fibre pack and spinneret
US4305703A (en) * 1980-09-12 1981-12-15 Lupke Manfred Arno Alfred Composite die assembly for use in the production of thermoplastic tubing
DE3162048D1 (en) * 1980-10-21 1984-03-01 Fiber Industries Inc Process of, apparatus for, and filament guide for, producing melt-spun filaments
US4340559A (en) * 1980-10-31 1982-07-20 E. I. Du Pont De Nemours And Company Spinning process
JPS57161113A (en) * 1981-03-31 1982-10-04 Nippon Ester Co Ltd Melt spinning method
DE3323202A1 (de) * 1982-06-29 1983-12-29 Barmag Barmer Maschinenfabrik Ag, 5630 Remscheid Schmelzspinn- und streckverfahren zur herstellung von polypropylenfaeden
US4440711A (en) * 1982-09-30 1984-04-03 Allied Corporation Method of preparing high strength and modulus polyvinyl alcohol fibers
US4713290A (en) * 1982-09-30 1987-12-15 Allied Corporation High strength and modulus polyvinyl alcohol fibers and method of their preparation
DE3424253A1 (de) * 1983-02-25 1986-01-09 Barmag Barmer Maschinenfabrik Ag, 5630 Remscheid Spinnanlage fuer chemiefasern mit anblaskasten und spinnschacht
DE3406346C2 (de) * 1983-02-25 1986-08-28 Barmag Barmer Maschinenfabrik Ag, 5630 Remscheid Schmelzspinnvorrichtung zur Erzeugung einer Schar von Filamentfäden
DE3335334C2 (de) * 1983-09-29 1986-01-30 Windmöller & Hölscher, 4540 Lengerich Kühlvorrichtung für aus einem Folienblaskopf extrudierte Kunststoffschlauchfolien mit Luftkühlung
DE3424343A1 (de) * 1984-07-03 1986-01-16 Bayer Ag, 5090 Leverkusen Verfahren und vorrichtung zum trockenspinnen
US4526597A (en) * 1984-08-23 1985-07-02 Owens-Corning Fiberglas Corporation Gas injection in fiber forming
JPS61119704A (ja) * 1984-11-13 1986-06-06 Mitsui Petrochem Ind Ltd フイラメント集合体の冷却方法
JPH0684568B2 (ja) * 1985-03-04 1994-10-26 日本石油株式会社 ピッチ繊維の製造法
CH673659A5 (sh) * 1987-03-05 1990-03-30 Inventa Ag
DE3701531A1 (de) * 1987-01-21 1988-08-04 Reifenhaeuser Masch Verfahren und anlage zur herstellung von einem spinnvlies
US4712988A (en) * 1987-02-27 1987-12-15 E. I. Du Pont De Nemours And Company Apparatus for quenching melt sprun filaments
US4836507A (en) * 1987-08-10 1989-06-06 E. I. Du Pont De Nemours And Company Aramid staple and pulp prepared by spinning
US5094690A (en) * 1988-08-16 1992-03-10 Lenzing Aktiengesellschaft Process and arrangement for preparing a solution of cellulose
AT392972B (de) * 1988-08-16 1991-07-25 Chemiefaser Lenzing Ag Verfahren zur herstellung von loesungen von cellulose sowie einrichtung zur durchfuehrung des verfahrens
US5254303A (en) * 1990-02-16 1993-10-19 Akzo N.V. Method and device for manufacturing molded bodies
AT395863B (de) * 1991-01-09 1993-03-25 Chemiefaser Lenzing Ag Verfahren zur herstellung eines cellulosischen formkoerpers
US5230905A (en) * 1991-06-14 1993-07-27 Fare' S.P.A. Polymer extruding device
US5277857A (en) * 1992-01-17 1994-01-11 Viskase Corporation Method of making a cellulose 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

Also Published As

Publication number Publication date
ZA944767B (en) 1995-02-16
TW257797B (sh) 1995-09-21
DE4495448D2 (de) 1995-09-21
AU682704B2 (en) 1997-10-16
YU48668B (sh) 1999-06-15
GB2285240B (en) 1997-04-09
ES2086249T3 (es) 1996-06-16
GB9504938D0 (en) 1995-04-26
DK0662166T3 (da) 1996-07-29
ATA149793A (de) 1996-12-15
TR27836A (tr) 1995-08-31
CN1113089A (zh) 1995-12-06
WO1995004173A1 (de) 1995-02-09
AU7221694A (en) 1995-02-28
GB2285240A (en) 1995-07-05
SI0662166T1 (sh) 1997-10-31
AT402738B (de) 1997-08-25
DE59400169D1 (de) 1996-04-25
CN1039040C (zh) 1998-07-08
BR9405533A (pt) 1999-09-08
EP0662166A1 (de) 1995-07-12
YU43994A (sh) 1997-05-28
GR3019615T3 (en) 1996-07-31
JPH08502558A (ja) 1996-03-19
ATE135755T1 (de) 1996-04-15
US5650112A (en) 1997-07-22

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