EP0950732B1 - Method for the production of polyester yarns - Google Patents

Method for the production of polyester yarns Download PDF

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Publication number
EP0950732B1
EP0950732B1 EP99106352A EP99106352A EP0950732B1 EP 0950732 B1 EP0950732 B1 EP 0950732B1 EP 99106352 A EP99106352 A EP 99106352A EP 99106352 A EP99106352 A EP 99106352A EP 0950732 B1 EP0950732 B1 EP 0950732B1
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EP
European Patent Office
Prior art keywords
polyester filaments
polyester
filaments
stretched
counter
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
EP99106352A
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German (de)
French (fr)
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EP0950732A2 (en
EP0950732A3 (en
Inventor
Rudolf Dipl.-Ing. Geier
Ingo Eifländer
Jürgen Dipl.-Ing. Hartig
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.)
ThyssenKrupp Industrial Solutions AG
Original Assignee
Uhde GmbH
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Publication date
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Publication of EP0950732A2 publication Critical patent/EP0950732A2/en
Publication of EP0950732A3 publication Critical patent/EP0950732A3/en
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Publication of EP0950732B1 publication Critical patent/EP0950732B1/en
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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
    • D01D5/00—Formation of filaments, threads, or the like
    • D01D5/12—Stretch-spinning methods
    • D01D5/16—Stretch-spinning methods using rollers, or like mechanical devices, e.g. snubbing pins
    • 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
    • D01D10/00—Physical treatment of artificial filaments or the like during manufacture, i.e. during a continuous production process before the filaments have been collected
    • D01D10/02—Heat treatment
    • 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
    • D01F6/00—Monocomponent artificial filaments or the like of synthetic polymers; Manufacture thereof
    • D01F6/58—Monocomponent artificial filaments or the like of synthetic polymers; Manufacture thereof from homopolycondensation products
    • D01F6/62—Monocomponent artificial filaments or the like of synthetic polymers; Manufacture thereof from homopolycondensation products from polyesters

Definitions

  • End titer means the titer after stretching.
  • Such a method is known from DE 195 29 135.
  • Technical polyester yarns in the overall titer range from approximately 100 dtex to 1100 dtex or larger can be produced from the polyester filaments produced by this known method, in a particularly efficient manner.
  • EASL means "elongation at specified load” and HAS "hot air shrinkage”.
  • the invention has for its object a method for Manufacture of polyester yarns described above To create embodiment, according to which polyester filaments with the required dimensional stability taking into account of a particularly low shrinkage to let.
  • polyester filaments are treated in the countercurrent zone at a temperature of 100 ° C. to 199 ° C., preferably 120 ° C. to 170 ° C., and pre-stretched to produce a crystallinity of> 24% ,
  • pre-stretch the polyester filaments it is possible to pre-stretch the polyester filaments to produce a crystallinity of 25% to 29% or even 30% to 50%.
  • the polyester filaments and the yarns made from them are particularly stable and not only have the reference elongation required for dimensional stability, but also extremely low shrinkage values, so that the DS values and consequently dimensional stability can be achieved with ease.
  • the polyester yarns produced by the process according to the invention are particularly suitable for technical uses and in this connection in particular for the production of fabrics.
  • the polyester filaments are expediently blown at a temperature of 200 ° C. to 350 ° C., preferably 220 ° C. to 270 ° C.
  • the polyester filaments are not only passed through the countercurrent heating zone in an unbundled orientation, but also with an air volume of 5 m 3 / h to 50 m 3 / h, preferably 26 m 3 / h to 40 m 3 / h in countercurrent blown and pre-stretched.
  • the only figure shows a device for manufacturing of fully oriented technical polyester yarns. Is to a spinning device 1 with an extruder 2 and Spinning beam provided as a spinneret 3.
  • the extruder 2 supplies the spinneret 3 with polyester melt.
  • To the spinneret 3 is followed by a reheater zone 4. It takes place then a cooling zone with blowing.
  • To the cooling zone 5 is followed by a counterflow heating zone 7, in which the unbundled Blown polyester filaments 8 in counterflow to produce a crystallinity of > 24%.
  • a preparation application device closes 9 with thread bundling after leaving the counterflow heating zone 7 on.
  • the counterflow heating zone 7 are heatable Subsequent to godets 10.
  • the godets 10 are different Drivable and enable speeds the post-stretching of the polyester yarns.
  • the godets 10 is a winder 11 for the post-stretched Polyester filaments 8 arranged which at a winding speed from 5000 m / min to 8000 m / min can be.

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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)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Yarns And Mechanical Finishing Of Yarns Or Ropes (AREA)
  • Artificial Filaments (AREA)
  • Spinning Methods And Devices For Manufacturing Artificial Fibers (AREA)

Description

Die Erfindung betrifft ein Verfahren zum Herstellen von Polyestergarnen, wonach

  • die Polyestergarne im Wege einer Bündelung von schmelzgesponnenen Polyesterfilamenten erzeugt werden, ferner
  • die Polyesterfilamente hinter einer Spinndüse in einer Kühlzone auf zumindest Erstarrungstemperatur abgekühlt und anschließend zum Zwecke des Verstreckens in einer Gegenstromheizzone auf eine Temperatur oberhalb des Glasübergangspunktes erwärmt werden, wobei
  • die Polyesterfilamente zur Erzeugung der erforderlichen Streckspannung in ungebündelter Ausrichtung durch die Gegenstromheizzone hindurchgeführt und von einem gasförmigen Medium im Gegenstrom angeblasen und vorverstreckt werden, wonach
  • die Polyesterfilamente mit einem Endtiter von 1,0 dtex bis 7,5 dtex anschließend bei Temperaturen von 80 °C bis 250 °C in einem Streckverhältnis von 1 : 1,5 bis 1 : 1,15 nachverstreckt werden, und wonach
  • die Polyesterfilamente abschließend mit einer Aufwickelgeschwindigkeit von 5000 m/min bis 8000 m/min aufgewickelt werden.
The invention relates to a method for producing polyester yarn, according to which
  • the polyester yarns are produced by bundling melt-spun polyester filaments;
  • the polyester filaments are cooled behind a spinneret in a cooling zone to at least solidification temperature and are then heated in a countercurrent heating zone to a temperature above the glass transition point for the purpose of drawing, wherein
  • the polyester filaments are passed through the countercurrent heating zone in an unbundled orientation in order to generate the required drawing tension and are blown and pre-stretched by a gaseous medium in countercurrent, after which
  • the polyester filaments with a final titer of 1.0 dtex to 7.5 dtex are then post-drawn at temperatures of 80 ° C to 250 ° C in a draw ratio of 1: 1.5 to 1: 1.15, and then
  • the polyester filaments are then wound up at a winding speed of 5000 m / min to 8000 m / min.

Endtiter meint den Titer nach der Verstreckung. End titer means the titer after stretching.

Ein derartiges Verfahren ist aus DE 195 29 135 bekannt. Aus den nach diesem bekannten Verfahren hergestellten Polyesterfilamenten lassen sich technische Polyestergarne im Gesamt-Titerbereich von ca. 100 dtex bis 1100 dtex oder größer herstellen, und zwar in besonders rationeller Weise. - Ein ständiges Problem bei Polyestergarnen bzw. deren Polyesterfilamenten bereitet die Dimensionsstabilität. Diese Dimensionsstabilität berücksichtigt einerseits eine Bezugsdehnung (%), andererseits einen Heißluftschrumpf (%) und ist definiert als DS = EASL (45N) + HAS (180/190 °C). Such a method is known from DE 195 29 135. Technical polyester yarns in the overall titer range from approximately 100 dtex to 1100 dtex or larger can be produced from the polyester filaments produced by this known method, in a particularly efficient manner. - Dimensional stability is a constant problem with polyester yarns and their polyester filaments. This dimensional stability takes into account a reference elongation (%) on the one hand, and a hot air shrinkage (%) on the other and is defined as DS = EASL (45N) + HAS (180/190 ° C).

Dabei ist unter EASL "Elongation at specified load" und unter HAS "Hot air shrinkage" zu verstehen. So sind beispielsweise typische DS-Werte bei Garnen mit einem Titer von 1100 dtex EALS HAS DS LS (Low Shrinkage) ∼ 18 ≤ 3 ∼ 21 HM (High Modulus) > 3.7 ≤ 9 ∼ 13 HMLS (High Modulus Low Shrinkage) > 3.7 ≤ 3 ∼ 7 EASL means "elongation at specified load" and HAS "hot air shrinkage". For example, typical DS values for yarns with a titer of 1100 dtex EFSA HAS DS LS ( L ow S hrinkage) ∼ 18 ≤ 3 ∼ 21 HM (H igh M odulus) > 3.7 ≤ 9 ∼ 13 HMLS ( H igh M odulus L ow S hrinkage) > 3.7 ≤ 3 ∼ 7

Nur wenn die Dimensionsstabilität DS gewährleistet ist, lassen sich Dehnung und Schrumpf in der gewünschten Weise einstellen. Voraussetzung für die Dimensionsstabilität wiederum ist die Kristallinität der Polyesterfilamente. Je höher die Kristallinität ist, desto stabiler sind die Polyesterfilamente und daraus hergestellten Polyestergarne bei hoher Temperatur und desto geringer ist deren Schrumpf. Only if the dimensional stability DS is guaranteed can stretch and shrink in the way you want to adjust. Requirement for dimensional stability again the crystallinity of the polyester filaments. ever the higher the crystallinity, the more stable the polyester filaments and polyester yarns made from it high temperature and the lower their shrinkage.

Zwar ist es im Zuge der Herstellung von Polymergarnen bekannt, Polyethylenterephthalatfilamente mit einer Kristallinität von 5 % bis 14 % (vgl. PCT/WO 96/20299) und mit einer Kristallinität von 16 % % bis 24 % (vgl. PCT/WO 90/04667) zu erzeugen, jedoch werden dadurch die angesprochenen Probleme noch nicht in befriedigender Weise gelöst.Although it is known in the course of the production of polymer yarns, Polyethylene terephthalate filaments with a Crystallinity from 5% to 14% (see PCT / WO 96/20299) and with a crystallinity of 16% to 24% (cf. PCT / WO 90/04667), but this will address the addressed Problems have not yet been solved satisfactorily.

Der Erfindung liegt die Aufgabe zugrunde, ein Verfahren zum Herstellen von Polyestergarnen der eingangs beschriebenen Ausführungsform zu schaffen, wonach sich Polyesterfilamente mit der erforderlichen Dimensionsstabilität unter Berücksichtigung eines besonders niedrigen Schrumpfes herstellen lassen.The invention has for its object a method for Manufacture of polyester yarns described above To create embodiment, according to which polyester filaments with the required dimensional stability taking into account of a particularly low shrinkage to let.

Diese Aufgabe löst die Erfindung bei einem gattungsgemäßen Verfahren dadurch, daß die Polyesterfilamente in der Gegenstromzone mit einer Temperatur von 100 °C bis 199 °C, vorzugsweise 120 °C bis 170 °C, behandelt und unter Erzeugung einer Kristallinität von > 24 % vorverstreckt werden. Im Rahmen der Erfindung besteht die Möglichkeit, die Polyesterfilamente unter Erzeugung einer Kristallinität von 25 % bis 29 % oder sogar von 30 % bis 50 % vorzuverstrecken. Aus diesem Grunde sind die Polyesterfilamente und daraus hergestellten Garne besonders stabil und weisen nicht nur die für die Dimensionsstabilität erforderliche Bezugsdehnung auf, sondern auch extrem niedrige Schrumpfwerte, so daß sich die DS-Werte und folglich Dimensionsstabilität unschwer erreichen lassen. Folglich sind die nach dem erfindungsgemäßen Verfahren hergestellten Polyestergarne für technische Verwendungszwecke und in diesem Zusammenhang insbesondere zur Herstellung von Geweben besonders geeignet. Um eine Kristallinität von 30 % bis 50 % zu erzielen, wird man die Polyesterfilamente zweckmäßigerweise bei einer Temperatur von 200 °C bis 350 °C, vorzugsweise 220 °C bis 270 °C anblasen. Zur Erzeugung der erforderlichen Streckspannung werden die Polyesterfilamente nicht nur in ungebündelter Ausrichtung durch die Gegenstromheizzone hindurchgeführt, sondern auch mit einer Luftmenge von 5 m3/h bis 50 m3/h, vorzugsweise 26 m3/h bis 40 m3/h im Gegenstrom angeblasen und vorverstreckt.This object is achieved by the invention in a generic method in that the polyester filaments are treated in the countercurrent zone at a temperature of 100 ° C. to 199 ° C., preferably 120 ° C. to 170 ° C., and pre-stretched to produce a crystallinity of> 24% , Within the scope of the invention it is possible to pre-stretch the polyester filaments to produce a crystallinity of 25% to 29% or even 30% to 50%. For this reason, the polyester filaments and the yarns made from them are particularly stable and not only have the reference elongation required for dimensional stability, but also extremely low shrinkage values, so that the DS values and consequently dimensional stability can be achieved with ease. Consequently, the polyester yarns produced by the process according to the invention are particularly suitable for technical uses and in this connection in particular for the production of fabrics. In order to achieve a crystallinity of 30% to 50%, the polyester filaments are expediently blown at a temperature of 200 ° C. to 350 ° C., preferably 220 ° C. to 270 ° C. To generate the required drawing tension, the polyester filaments are not only passed through the countercurrent heating zone in an unbundled orientation, but also with an air volume of 5 m 3 / h to 50 m 3 / h, preferably 26 m 3 / h to 40 m 3 / h in countercurrent blown and pre-stretched.

Im folgenden wird die Erfindung anhand einer lediglich ein Ausführungsbeispiel darstellenden Zeichnung näher erläutert.In the following, the invention is based on only one Exemplary embodiment illustrating the drawing.

Die einzige Figur zeigt eine Vorrichtung zur Herstellung von vollorientierten technischen Polyestergarnen. Dazu ist eine Spinnvorrichtung 1 mit einem Extruder 2 und einem Spinnbalken als Spinndüse 3 vorgesehen. Der Extruder 2 versorgt die Spinndüse 3 mit Polyesterschmelze. An die Spinndüse 3 schließt sich eine Nacherhitzerzone 4 an. Es erfolgt dann eine Kühlzone mit Anblasung. An die Kühlzone 5 schließt sich eine Gegenstromheizzone 7 an, in der die ungebündelten Polyesterfilamente 8 im Gegenstrom angeblasen werden, und zwar unter Erzeugung einer Kristallinität von > 24 %. Es schließt sich eine Präparationsauftragsvorrichtung 9 mit Fadenbündelung nach dem Austritt aus der Gegenstromheizzone 7 an. Der Gegenstromheizzone 7 sind beheizbare Galetten 10 nachgeordnet. Die Galetten 10 sind mit unterschiedlichen Geschwindigkeiten antreibbar und ermöglichen die Nachverstreckung der Polyestergarne. Den Galetten 10 ist eine Aufwickelvorrichtung 11 für die nachverstreckten Polyesterfilamente 8 angeordnet, welche mit einer Aufwickelgeschwindigkeit von 5000 m/min bis 8000 m/min aufaewickelt werden können.The only figure shows a device for manufacturing of fully oriented technical polyester yarns. Is to a spinning device 1 with an extruder 2 and Spinning beam provided as a spinneret 3. The extruder 2 supplies the spinneret 3 with polyester melt. To the spinneret 3 is followed by a reheater zone 4. It takes place then a cooling zone with blowing. To the cooling zone 5 is followed by a counterflow heating zone 7, in which the unbundled Blown polyester filaments 8 in counterflow to produce a crystallinity of > 24%. A preparation application device closes 9 with thread bundling after leaving the counterflow heating zone 7 on. The counterflow heating zone 7 are heatable Subsequent to godets 10. The godets 10 are different Drivable and enable speeds the post-stretching of the polyester yarns. The godets 10 is a winder 11 for the post-stretched Polyester filaments 8 arranged which at a winding speed from 5000 m / min to 8000 m / min can be.

Claims (4)

  1. Process for the production of polyester yarn, in which
    the polyester yarn is produced by bundling melt-spun polyester filaments (8), and
    the polyester filaments (8) are cooled in a cooling zone (5) downstream of a spinneret (3) to a temperature equalling at least the solidification point and subsequently heated in a counter-current heating zone (7) to a temperature above the glass transition point for the purpose of stretching,
    the polyester filaments (8) being passed through the counter-current heating zone (7) in non-bundled alignment for the purpose of creating the required stretching tension, a gaseous medium being blown onto the filaments in counter-current, the filaments thus being pre-stretched,
    the polyester filaments (8) with a final titre of 1.0 to 7.5 dtex being subsequently post-stretched at temperatures of 80 to 250°C and a stretching ratio of 1 : 1.5 to 1 : 1.15, and
    the polyester filaments (8) being subsequently wound at a winding rate of 5000 to 8000 m/min,
    characterised in that the polyester filaments (8) are exposed to a temperature of 100 to 190°C, preferably 120 to 170°C, in the counter-current heating zone and pre-stretched, thus resulting in a crystallinity of > 24%.
  2. Process according to claim 1, characterised in that the polyester filaments are pre-stretched such as to obtain a crystallinity of 25 to 29%.
  3. Process according to claim 1, characterised in that the polyester filaments are pre-stretched such as to obtain a crystallinity of 30 to 50%.
  4. Process according to any of the preceding claims 1 to 3, characterised in that the polyester filaments (8) are exposed to a counter-current air rate of 5 to 50 m3/h, preferably 26 to 40 m3/h.
EP99106352A 1998-04-17 1999-03-27 Method for the production of polyester yarns Expired - Lifetime EP0950732B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19816979 1998-04-17
DE19816979A DE19816979A1 (en) 1998-04-17 1998-04-17 Method and device for producing polyester yarns

Publications (3)

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EP0950732A2 EP0950732A2 (en) 1999-10-20
EP0950732A3 EP0950732A3 (en) 2000-01-05
EP0950732B1 true EP0950732B1 (en) 2003-02-26

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EP99106352A Expired - Lifetime EP0950732B1 (en) 1998-04-17 1999-03-27 Method for the production of polyester yarns

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US (1) US6149847A (en)
EP (1) EP0950732B1 (en)
CN (1) CN1105197C (en)
CZ (1) CZ293617B6 (en)
DE (2) DE19816979A1 (en)
ES (1) ES2189303T3 (en)
PL (1) PL192400B1 (en)
SK (1) SK284978B6 (en)
TW (1) TW475011B (en)

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0984085A4 (en) * 1997-05-20 2001-03-28 Toray Industries Polyester fiber and process for preparing the same
US7648358B1 (en) * 2008-10-08 2010-01-19 Holon Seiko Co., Ltd. Plastic pellet forming apparatus
CN101880918B (en) * 2010-06-18 2012-12-05 东华大学 Multi-target dynamic programming method applied to optimizing carbon fiber draft process
CN102352537B (en) * 2011-08-16 2013-08-07 黑龙江大学 Coagulation-bath-free spinning method of polyacrylonitrile-based carbon fiber protofilament
WO2015199798A2 (en) 2014-04-22 2015-12-30 Plastipak Packaging, Inc. Pellet and precursor with recycled content
CN113046851B (en) * 2021-04-20 2022-06-07 江苏太极实业新材料有限公司 Manufacturing method of high-strength high-dimensional-stability HMLS polyester industrial yarn

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3946100A (en) * 1973-09-26 1976-03-23 Celanese Corporation Process for the expeditious formation and structural modification of polyester fibers
DE3173948D1 (en) * 1980-02-18 1986-04-10 Ici Plc Process for forming a continuous filament yarn from a melt spinnable polyethylene terephthalat and novel polyester yarns produced by the process
US4909976A (en) * 1988-05-09 1990-03-20 North Carolina State University Process for high speed melt spinning
US5067538A (en) * 1988-10-28 1991-11-26 Allied-Signal Inc. Dimensionally stable polyester yarn for highly dimensionally stable treated cords and composite materials such as tires made therefrom
DE4021545A1 (en) * 1990-07-06 1992-01-16 Engineering Der Voest Alpine I METHOD AND DEVICE FOR PRODUCING PLASTIC FEATHERS OR FIBERS FROM POLYMERS, ESPECIALLY POLYAMIDE, POLYESTER OR POLYPROPYLENE
DE69518988T2 (en) * 1994-12-23 2001-04-05 Akzo Nobel Nv METHOD FOR PRODUCING A CONTINUOUS POLYESTER FILM YARN, USE OF THE FILAMENT YARN AND CORD PRODUCED THEREOF
DE19529135A1 (en) * 1995-08-08 1997-02-13 Brown John Deutsche Eng Gmbh Method and device for producing polyester yarns

Also Published As

Publication number Publication date
PL328988A1 (en) 1999-10-25
EP0950732A2 (en) 1999-10-20
ES2189303T3 (en) 2003-07-01
CN1105197C (en) 2003-04-09
EP0950732A3 (en) 2000-01-05
CN1232889A (en) 1999-10-27
DE59904352D1 (en) 2003-04-03
CZ293617B6 (en) 2004-06-16
PL192400B1 (en) 2006-10-31
CZ268098A3 (en) 1999-12-15
US6149847A (en) 2000-11-21
DE19816979A1 (en) 1999-10-21
SK284978B6 (en) 2006-03-02
TW475011B (en) 2002-02-01
SK49099A3 (en) 2001-07-10

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