EP0843749B1 - Process and device for producing polyester yarns - Google Patents

Process and device for producing polyester yarns Download PDF

Info

Publication number
EP0843749B1
EP0843749B1 EP96926368A EP96926368A EP0843749B1 EP 0843749 B1 EP0843749 B1 EP 0843749B1 EP 96926368 A EP96926368 A EP 96926368A EP 96926368 A EP96926368 A EP 96926368A EP 0843749 B1 EP0843749 B1 EP 0843749B1
Authority
EP
European Patent Office
Prior art keywords
polyester filaments
countercurrent
dtex
air
polyester
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
EP96926368A
Other languages
German (de)
French (fr)
Other versions
EP0843749A1 (en
Inventor
Rudolf Geier
Jürgen HARTIG
Ingo Eifländer
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
John Brown Deutsche Engineering GmbH
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 John Brown Deutsche Engineering GmbH filed Critical John Brown Deutsche Engineering GmbH
Publication of EP0843749A1 publication Critical patent/EP0843749A1/en
Application granted granted Critical
Publication of EP0843749B1 publication Critical patent/EP0843749B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Images

Classifications

    • D—TEXTILES; PAPER
    • D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
    • D01F—CHEMICAL FEATURES IN THE MANUFACTURE OF ARTIFICIAL FILAMENTS, THREADS, FIBRES, BRISTLES OR RIBBONS; APPARATUS SPECIALLY ADAPTED FOR THE MANUFACTURE OF CARBON FILAMENTS
    • 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
    • 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
    • D01D5/098—Melt spinning methods with simultaneous stretching
    • 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
    • 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
    • D02—YARNS; MECHANICAL FINISHING OF YARNS OR ROPES; WARPING OR BEAMING
    • D02J—FINISHING OR DRESSING OF FILAMENTS, YARNS, THREADS, CORDS, ROPES OR THE LIKE
    • D02J1/00—Modifying the structure or properties resulting from a particular structure; Modifying, retaining, or restoring the physical form or cross-sectional shape, e.g. by use of dies or squeeze rollers
    • D02J1/22—Stretching or tensioning, shrinking or relaxing, e.g. by use of overfeed and underfeed apparatus, or preventing stretch
    • D02J1/228—Stretching in two or more steps, with or without intermediate steps

Definitions

  • the invention relates to a method for producing Polyester yarns according to the preamble of claim 1, according to which melt-spun polyester filaments behind a spinneret in a cooling zone cools at least solidification temperature and then for the purpose of stretching in a heating zone on a Temperature above the glass transition point or Freezing point warmed, and to generate the required Yield stress from a gaseous Medium is blown in counterflow and a device according to the preamble of claim 9.
  • US-A-47 43 504 is concerned with the manufacture of Plastic yarn, especially polyester yarn, based on a High speed melt spinning.
  • This Context is treated which plastic yarn specific properties regarding birefringence, Has viscosity, etc.
  • the threads and not the microfilaments are passed through a heating zone and in this to a temperature between the glass and Melting point heated.
  • This heating zone can be of various types be built u. a. also counter- or co-flowing Have air.
  • the Frictional resistance not increased.
  • Do not pre-stretch. It would actually be a stretching process even disadvantageous at this point, as a uniform heating of the filaments and consequently of the the filament bundled plastic thread over his entire cross section to a temperature above the Solidification point is hardly possible.
  • Secondary draw down zone refers to the Threads and not the microfilaments. Because in the quench zone following the spinneret are the individual filaments already spun or bundled into a yarn.
  • polyester filaments leave one here Spinning head, in connection to a cooling chamber or a To go through blow box. Directly after the The aforementioned filaments become one cooling chamber Bundles gathered and as a yarn a subsequent Subjected to heating. For this purpose the yarn goes through and not the polyester filaments a heating tube. Subsequently the yarn is drawn, with an aspect ratio between 1.3 and 1.7. This will set by means of two godets over which the yarn at a speed between 3500 to 5300 m / min running.
  • EP-B 0 491 012 (corresponding to the PCT / DE 91/00420) such a method has become known, at which microfilaments with a single titer ⁇ 1.0 dtex for final stretching at a take-off speed up to 8000 m / min through the heating zone and be blown in counterflow. After this known methods are fully stretched plastic threads generated without post-treatment, which becomes a special let fine and supple goods be processed.
  • the invention is based on the technical problem Method and an apparatus to indicate what Polyester yarns with optimized properties for technical Have uses made in a rational manner.
  • the invention further teaches that the amount of air and The temperature of the counterflow air can be set so that a thread stretch ⁇ 50%, preferably 30% to 40%, is achieved. Furthermore, the withdrawal speed of the Polyester filaments, the amount of air and the temperature of the Counterflow air can be adjusted so that a tensile strength the polyester filaments> 3.2 cN / dtex, preferably 3.4 cN / dtex to 4.5 cN / dtex. In addition, there is Possibility of the amount of air and the temperature of the counterflow air set so that a hot air shrinkage ⁇ 6% (at 177 ° C) is reached.
  • Polyester filaments following the counter current treatment continuously stretched so that a single step Manufacturing process is realized.
  • the post-stretched Polyester filaments may be before winding be subjected to a swirling and re-preparation.
  • the polyester filaments in a separate treatment stage be stretched, for example on one Stretching device such as draw twine or stretch winder.
  • the invention also relates to a device for producing polyester yarns from polyester filaments with a single denier from 1.0 dtex to 7.5 dtex according to the method described above, with at least one spinneret of a cooling zone downstream of the spinneret and of a countercurrent heating zone downstream of the cooling zone.
  • This device which is characterized by a particularly simple and functional design with a high production speed, is characterized in that the godets heated for the purpose of pre-stretching the polyester filaments with an air flow of 5 m 3 / h to 25 m 3 / h in countercurrent heating zone for the purpose of post-stretching with a godet temperature of 80 ° C to 250 ° C are subordinate that the godets can be driven at different speeds to set a predetermined stretching ratio, and that the godets one with a winding speed of 5000 m / min to 8000 m / min working rewinder for the post-stretched polyester filaments.
  • the single figure shows a device according to the invention for the production of fully oriented technical polyester yarns.
  • This is a spinning device 1 with an extruder 2 and a spinning beam provided as a spinneret 3.
  • the Extruder 2 supplies the spinneret 3 with polyester melt.
  • the starting product for the polyester melt is a polyester granulate in the viscosity range IV 0.60 - 1.10 dl / g.
  • On the spinneret 3 is followed by a reheater zone 4.
  • a cooling zone with blowing follows. To the cooling zone 5 is followed by a countercurrent heating zone 7, in the the unbundled polyester filaments 8 in countercurrent be blown. This is followed by a device for the preparation order 9 and thread bundling after Exit from the counterflow heating zone 7.
  • the counterflow heating zone 7 heatable godets 10 are arranged downstream.
  • the Godets 10 are at different speeds drivable.
  • the godet 10 is a winder 11 for the post-stretched polyester
  • the post-stretched polyester filaments 8 and the polyester yarns produced therefrom have the following properties: Elongation at break 6.5% to 12% tensile strenght 5 cN / dtex to 7.5 cN / dtex Shrink, hot air 177 ° C ⁇ 6.0%.

Landscapes

  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • General Chemical & Material 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 gemäß Oberbegriff des Anspruchs 1, wonach schmelzgesponnene Polyesterfilamente hinter eine Spinndüse in einer Kühlzone auf zumindest Erstarrungstemperatur abkühlt und anschließend zum Zwecke des Verstreckens in einer Heizzone auf eine Temperatur oberhalb des Glasübergangspunktes bzw. Erstarrungspunktes erwärmt, sowie zur Erzeugung der erforderlichen Streckspannung von einem gasförmigen Medium im Gegenstrom angeblasen werden sowie eine Vorrichtung gemäß Oberbegriff des Anspruchs 9.The invention relates to a method for producing Polyester yarns according to the preamble of claim 1, according to which melt-spun polyester filaments behind a spinneret in a cooling zone cools at least solidification temperature and then for the purpose of stretching in a heating zone on a Temperature above the glass transition point or Freezing point warmed, and to generate the required Yield stress from a gaseous Medium is blown in counterflow and a device according to the preamble of claim 9.

Die US-A-47 43 504 beschäftigt sich mit der Herstellung von Kunststoffgarn, insbesondere Polyestergarn, auf Basis einer Hochgeschwindigkeitsschmelzspinnherstellung. In diesem Zusammenhang wird Kunststoffgarn behandelt, welches spezifische Eigenschaften hinsichtlich der Doppelbrechung, Viskosität usw. aufweist. Die Fäden und nicht die Mikrofilamente werden durch eine Heizzone hindurchgeführt und in dieser auf eine Temperatur zwischen dem Glas- und Schmelzpunkt aufgeheizt. Diese Heizzone kann verschiedenartig aufgebaut sein, u. a. auch gegen- oder mitströmende Luft aufweisen. Allerdings wird an dieser Stelle der Reibungswiderstand nicht erhöht. Gleichzeitig findet eine Vorverstreckung nicht statt. - Tatsächlich wäre ein Streckprozeß an dieser Stelle sogar nachteilig, da eine gleichmäßige Erwärmung der Filamente und folglich des aus den Filamenten gebündelten Kunststoffadens über seinen gesamten Querschnitt auf eine Temperatur oberhalb des Erstarrungspunktes kaum möglich ist.US-A-47 43 504 is concerned with the manufacture of Plastic yarn, especially polyester yarn, based on a High speed melt spinning. In this Context is treated which plastic yarn specific properties regarding birefringence, Has viscosity, etc. The threads and not the microfilaments are passed through a heating zone and in this to a temperature between the glass and Melting point heated. This heating zone can be of various types be built u. a. also counter- or co-flowing Have air. However, at this point the Frictional resistance not increased. At the same time, one finds Do not pre-stretch. - It would actually be a stretching process even disadvantageous at this point, as a uniform heating of the filaments and consequently of the the filament bundled plastic thread over his entire cross section to a temperature above the Solidification point is hardly possible.

Unabhängig davon ist zwar von einer sogenannten "secondary draw down zone" die Rede, diese bezieht sich jedoch auf die Fäden und nicht die Mikrofilamente. Denn in der Quench-Zone im Anschluß an die Spinndüse sind die einzelnen Filamente bereits zu einem Garn versponnen bzw. gebündelt.Regardless of this is a so-called "secondary draw down zone ", but this refers to the Threads and not the microfilaments. Because in the quench zone following the spinneret are the individual filaments already spun or bundled into a yarn.

Mit der Herstellung von Kunststoffgarn befaßt sich auch die DE-A-42 24 453. Hier verlassen Polyesterfilamente einen Spinnkopf, um im Anschluß hieran eine Kühlkammer bzw. einen Blaskasten zu durchlaufen. Direkt im Anschluß an die Kühlkammer werden die vorgenannten Filamente zu einem Bündel zusammengerafft und als Garn einer anschließenden Beheizung unterzogen. Zu diesem Zweck durchläuft das Garn und nicht die Polyesterfilamente ein Heizrohr. Anschließend findet eine Verstreckung des Garnes statt, und zwar mit einem Streckverhältnis zwischen 1,3 und 1,7. Dieses wird mittels zweier Galetten eingestellt, über welche das Garn mit einer Geschwindigkeit zwischen 3500 bis 5300 m/min läuft.The company also deals with the production of plastic yarn DE-A-42 24 453. Polyester filaments leave one here Spinning head, in connection to a cooling chamber or a To go through blow box. Directly after the The aforementioned filaments become one cooling chamber Bundles gathered and as a yarn a subsequent Subjected to heating. For this purpose the yarn goes through and not the polyester filaments a heating tube. Subsequently the yarn is drawn, with an aspect ratio between 1.3 and 1.7. This will set by means of two godets over which the yarn at a speed between 3500 to 5300 m / min running.

Weiter ist durch die EP-B 0 491 012 (entsprechend der PCT/DE 91/00420) ein derartiges Verfahren bekannt geworden, bei welchem Mikrofilamente mit einem Einzeltiter < 1,0 dtex zur endgültigen Verstreckung mit einer Abzugsgeschwindigkeit bis 8000 m/min durch die Heizzone hindurchgezogen und im Gegenstrom angeblasen werden. Nach diesem bekannten Verfahren werden vollverstreckte Kunststoff-Fäden ohne Nachbehandlung erzeugt, die sich zu einer besonders feinen und anschmiegsamen Ware verarbeiten lassen. Furthermore, EP-B 0 491 012 (corresponding to the PCT / DE 91/00420) such a method has become known, at which microfilaments with a single titer <1.0 dtex for final stretching at a take-off speed up to 8000 m / min through the heating zone and be blown in counterflow. After this known methods are fully stretched plastic threads generated without post-treatment, which becomes a special let fine and supple goods be processed.

Der Erfindung liegt das technische Problem zugrunde, ein Verfahren und eine Vorrichtung anzugeben, wonach sich Polyestergarne mit optimierten Eigenschaften für technische Verwendungszwecke in rationeller Weise herstellen lassen.The invention is based on the technical problem Method and an apparatus to indicate what Polyester yarns with optimized properties for technical Have uses made in a rational manner.

Dieses Problem löst die Erfindung durch ein Verfahren zum Herstellen von Polyestergarnen wonach

  • die Polyestergarne im Wege der Bündelung von schmelzgesponnenen Polyesterfilamenten erzeugt werden, wonach 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 mit einer Luftmenge von 5 m3/h bis 25 m3/h im Gegenstrom angeblasen und vorverstreckt werden, wonach weiter
  • die Polyesterfilamente mit einem Einzeltiter 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. - Aus den nach dem erfindungsgemäßen Verfahren hergestellten Polyesterfilamenten lassen sich technische Polyestergarne im Gesamttiterbereich von ca. 100 dtex bis 1100 dtex oder größer herstellen und zwar im Wege der Bündelung. Technische Polyestergarne meint, daß diese Polyestergarne für technische Verwendungszwecke besonders geeignet sind, nämlich z. B. als Nähgarne, in Geweben von Planen, Zelten, Segeltuch, Reifencord, Schläuchen, Keil-riemen, Förderbändern, Seilen usw.. Tatsächlich zeichnen sich die nach dem erfindungsgemäßen Verfahren hergestellten Polyesterfilamente und daraus hergestellten Polyestergarne durch hohe Qualität aus und lassen sich in besonders rationeller Weise erzeugen.
    • The invention solves this problem by a process for the production of polyester yarns thereafter
  • the polyester yarns are produced by bundling melt-spun polyester filaments, after which
  • 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 stretching tension and are blown in with a quantity of air of 5 m 3 / h to 25 m 3 / h in countercurrent and pre-drawn, after which further
  • the polyester filaments with a single 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. - Technical polyester yarns in the total denier range from approx. 100 dtex to 1100 dtex or larger can be produced from the polyester filaments produced by the process according to the invention, namely by bundling. Technical polyester yarns means that these polyester yarns are particularly suitable for technical uses, namely e.g. B. as sewing threads, in fabrics of tarpaulins, tents, canvas, tire cord, hoses, V-belts, conveyor belts, ropes, etc. In fact, the polyester filaments and polyester yarns produced by the process according to the invention are characterized by high quality and can be in generate particularly rational.

    • Weitere vorteilhafte Ausgestaltungen sind im folgenden aufgeführt. So beträgt die Temperatur der Polyesterfilamente unmittelbar nach dem Schmelzspinnen 200° C bis 350° C, insbesondere 250° C bis 310 °C. Die Polyesterfilamente werden vor dem Eintritt in die Heizzone auf ca. 80° C abgekühlt. Anschließend werden die Polyesterfilamente zweckmäßigerweise bei einer Temperatur von 200° C bis 350° C, vorzugsweise 225° C bis 285°C, im Gegenstrom angeblasen und gleichsam vorverstreckt. Weiter werden die Polyesterfilamente in der Regel mit einer Abzugsgeschwindigkeit von 3000 m/min bis 7500 m/min durch den Gegenstrom hindurchgezogen. Während die Kühlzone bei z. B. Querstromanblasung eine Länge von 800 mm bis 1200 mm hat, beträgt die Länge der Heizzone bei Gegenstromanblasung 1,2 m bis 2,5 m. Nach dem Austritt aus der Heizzone erfolgt regelmäßig ein Präparationsauftrag auf die vorverstreckten Polyesterfilamente. Further advantageous configurations are as follows listed. So is the temperature of the polyester filaments immediately after melt spinning 200 ° C to 350 ° C, especially 250 ° C to 310 ° C. The polyester filaments are reduced to approx. Cooled to 80 ° C. Then the polyester filaments expediently at a temperature of 200 ° C to 350 ° C, preferably 225 ° C to 285 ° C, in countercurrent blown and pre-stretched as it were. The will continue Polyester filaments usually with a take-off speed from 3000 m / min to 7500 m / min through the Pulled countercurrent. While the cooling zone at z. B. Cross-flow blowing has a length of 800 mm to 1200 mm, the length of the heating zone for counterflow blowing is 1.2 m to 2.5 m. After leaving the heating zone regularly a preparation order on the pre-stretched Polyester filaments.

    Weiter lehrt die Erfindung, daß die Luftmenge und die Temperatur der Gegenstromluft so eingestellt werden, daß eine Fadendehnung < 50 %, vorzugsweise 30 % bis 40 %, erzielt wird. Ferner können die Abzugsgeschwindigkeit der Polyesterfilamente, die Luftmenge und die Temperatur der Gegenstromluft so eingestellt werden, daß eine Zugfestigkeit der Polyesterfilamente > 3,2 cN/dtex, vorzugsweise 3,4 cN/dtex bis 4,5 cN/dtex, erzielt wird. Außerdem besteht die Möglichkeit, die Luftmenge und die Temperatur der Gegenstromluft so einzustellen, daß ein Heißluftschrumpf ≤ 6 % (bei 177° C) erreicht wird.The invention further teaches that the amount of air and The temperature of the counterflow air can be set so that a thread stretch <50%, preferably 30% to 40%, is achieved. Furthermore, the withdrawal speed of the Polyester filaments, the amount of air and the temperature of the Counterflow air can be adjusted so that a tensile strength the polyester filaments> 3.2 cN / dtex, preferably 3.4 cN / dtex to 4.5 cN / dtex. In addition, there is Possibility of the amount of air and the temperature of the counterflow air set so that a hot air shrinkage ≤ 6% (at 177 ° C) is reached.

    Nach einem besonderen Vorschlag der Erfindung werden die Polyesterfilamente im Anschluß an die Gegenstrombehandlung kontinuierlich nachverstreckt, so daß ein einstufiges Herstellungsverfahren verwirklicht wird. Im Rahmen der Erfindung besteht auch die Möglichkeit, daß die nachverstreckten Polyesterfilamente vor dem Aufwickeln eventuell einer Verwirbelung und Nachpräparierung unterzogen werden. Im Rahmen der Erfindung besteht aber auch die Möglichkeit, daß die Polyesterfilamente in einer getrennten Behandlungsstufe nachverstreckt werden, zum Beispiel auf einer Verstreckeinrichtung wie Streckzwirn- oder Streckspulmaschine.According to a special proposal of the invention Polyester filaments following the counter current treatment continuously stretched so that a single step Manufacturing process is realized. As part of the Invention there is also the possibility that the post-stretched Polyester filaments may be before winding be subjected to a swirling and re-preparation. Within the scope of the invention, however, there is also the possibility of that the polyester filaments in a separate treatment stage be stretched, for example on one Stretching device such as draw twine or stretch winder.

    Gegenstand der Erfindung ist auch eine Vorrichtung zum Herstellen von Polyestergarnen aus Polyesterfilamenten mit einem Einzeltiter von 1,0 dtex bis 7,5 dtex gemäß dem vorbeschriebenen Verfahren, mit zumindest einer Spinndüse einer der Spinndüse nachgeordneten Kühlzone und einer der Kühlzone nachgeordneten Gegenstromheizzone. Diese Vorrichtung, die sich durch eine besonders einfache und funktionsgerechte Bauweise mit hoher Produktionsgeschwindigkeit auszeichnet, ist dadurch gekennzeichnet, daß der zum Zwecke der Vorverstreckung der Polyesterfilamente mit einer Luftmenge von 5 m3/h bis 25 m3/h im Gegenstrom betriebenen Gegenstromheizzone beheizte Galetten zum Zwecke der Nachverstreckung mit einer Galettentemperatur von 80° C bis 250° C nachgeordnet sind, daß die Galetten zur Einstellung eines vorgegebenen Streckverhältnisses mit unterschiedlichen Geschwindigkeiten antreibbar sind, und daß den Galetten eine mit einer Aufwickelgeschwindigkeit von 5000 m/min bis 8000 m/min arbeitende Aufwickelvorrichtung für die nachverstreckten Polyesterfilamente nachgeordnet ist.The invention also relates to a device for producing polyester yarns from polyester filaments with a single denier from 1.0 dtex to 7.5 dtex according to the method described above, with at least one spinneret of a cooling zone downstream of the spinneret and of a countercurrent heating zone downstream of the cooling zone. This device, which is characterized by a particularly simple and functional design with a high production speed, is characterized in that the godets heated for the purpose of pre-stretching the polyester filaments with an air flow of 5 m 3 / h to 25 m 3 / h in countercurrent heating zone for the purpose of post-stretching with a godet temperature of 80 ° C to 250 ° C are subordinate that the godets can be driven at different speeds to set a predetermined stretching ratio, and that the godets one with a winding speed of 5000 m / min to 8000 m / min working rewinder for the post-stretched polyester filaments.

    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 drawing closer explained.

    Die einzige Figur zeigt eine erfindungsgemäße 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. Ausgangsprodukt für die Polyesterschmelze ist ein Polyestergranulat im Viskositätsbereich IV 0.60 - 1.10 dl/g. An die Spinndüse 3 schließt sich eine Nacherhitzerzone 4 an. Es folgt dann eine Kühlzone mit Anblasung. An die Kühlzone 5 schließt sich eine Gegenstromheizzone 7 an, in der also die ungebündelten Polyesterfilamente 8 im Gegenstrom angeblasen werden. Anschließend folgt eine Vorrichtung für den Präparationsauftrag 9 und Fadenbündelung nach dem Austritt aus der Gegenstromheizzone 7. Der Gegenstromheizzone 7 sind beheizbare Galetten 10 nachgeordnet. Die Galetten 10 sind mit unterschiedlichen Geschwindigkeiten antreibbar. Den Galetten 10 ist eine Aufwickelvorrichtung 11 für die nachverstreckten Polyesterfilamente 8 nachgeordnet.The single figure shows a device according to the invention for the production of fully oriented technical polyester yarns. This is a spinning device 1 with an extruder 2 and a spinning beam provided as a spinneret 3. The Extruder 2 supplies the spinneret 3 with polyester melt. The starting product for the polyester melt is a polyester granulate in the viscosity range IV 0.60 - 1.10 dl / g. On the spinneret 3 is followed by a reheater zone 4. A cooling zone with blowing follows. To the cooling zone 5 is followed by a countercurrent heating zone 7, in the the unbundled polyester filaments 8 in countercurrent be blown. This is followed by a device for the preparation order 9 and thread bundling after Exit from the counterflow heating zone 7. The counterflow heating zone 7 heatable godets 10 are arranged downstream. The Godets 10 are at different speeds drivable. The godet 10 is a winder 11 for the post-stretched polyester filaments 8.

    Die nachverstreckten Polyesterfilamente 8 bzw. die daraus hergestellten Polyestergarne weisen die folgenden Eigenschaften auf: Bruchdehnung 6,5 % bis 12 % Zugfestigkeit 5 cN/dtex bis 7,5 cN/dtex Schrumpf, Heißluft 177° C ≤ 6,0 %. The post-stretched polyester filaments 8 and the polyester yarns produced therefrom have the following properties: Elongation at break 6.5% to 12% tensile strenght 5 cN / dtex to 7.5 cN / dtex Shrink, hot air 177 ° C ≤ 6.0%.

    Claims (9)

    1. A process for producing polyester yarn, wherein
      the polyester yarn is produced by a route comprising the bundling of melt-spun polyester filaments (8), and wherein in addition
      the polyester filaments (8) are cooled to at least their solidification temperature in a cooling zone (5) downstream of a spinneret (3) and are subsequently heated in a countercurrent heating zone (7) to a temperature above their glass transition point, for the purpose of drawing them,
      characterised in that
      in order to produce the requisite drawing tension the polyester filaments (8) are passed in unbundled alignment through the countercurrent heating zone (7), are blown against in countercurrent by an amount of air ranging from 5 m3/hour to 25 m3/hour, and are predrawn,
      that the polyester filaments (8), which have an individual titre from 1.0 dtex to 7.5 dtex, are subsequently post-drawn at a drawing ratio from 1:1.5 to 1:1.1 5 and at a temperature from 80°C to 250°C, and
      that the polyester filaments (8) are finally taken up at a take-up rate from 5000 m/min to 8000 m/min.
    2. A process according to claim 1, characterised in that the polyester filaments (8) are blown against in countercurrent at a temperature from 200°C to 350°C, preferably from 225°C to 285 °C.
    3. A process according to claims 1 or 2, characterised in that the polyester filaments (8) are pulled through the countercurrent at a pull-off speed from 3000 m/min to 7500 m/min.
    4. A process according to any one of claims 1 to 3, characterised in that the amount of air and the temperature of the countercurrent air are adjusted so that a fibre elongation < 50 %, preferably from 30 % to 40 %, is achieved.
    5. A process according to any one of claims 1 to 4, characterised in that the pull-off speed of the polyester filaments (8), the amount of air, and the temperature of the countercurrent air are adjusted so that the tensile strength of the polyester filaments (8) which is obtained ranges from 3.2 cN/dtex, preferably from 3.4 cN/dtex, to 4.5 cN/dtex.
    6. A process according to any one of claims 1 to 5, characterised in that the amount of air and the temperature of the countercurrent air are adjusted so that a hot air shrinkage of < 6% (at 177°C) is achieved.
    7. A process according to any one of claims 1 to 6, characterised in that the polyester filaments (8) are continuously post-drawn following their countercurrent treatment.
    8. A process according to any one of claims 1 to 7, characterised in that the polyester filaments (8) are post-drawn in a separate treatment step.
    9. An apparatus for producing polyester yarn from polyester filaments (8) having an individual titre from 1.0 dtex to 7.5 dtex by the process according to any one of claims 1 to 8, comprising at least one spinneret (3), a cooling zone (5) disposed downstream of the spinneret (3) and a countercurrent heating zone (7) disposed downstream of the cooling zone (5), characterised in that for the purpose of effecting post-drawing, heated galettes (10), with a galette temperature from 80°C to 250°C, are disposed downstream of the countercurrent heating zone (7), which is operated in countercurrent with an amount of air from 5 m3/hour to 25 m3/hour for the purpose of pre-drawing the polyester filaments (8), that the galettes (10) can be driven at different speeds in order to set a predetermined drawing ratio, and that a take-up device (11) for the post-drawn polyester filaments (8), which operates at a take-up speed from 5000 m/min to 8000 m/min, is disposed downstream of the galettes (10).
    EP96926368A 1995-08-08 1996-07-19 Process and device for producing polyester yarns Expired - Lifetime EP0843749B1 (en)

    Applications Claiming Priority (3)

    Application Number Priority Date Filing Date Title
    DE19529135A DE19529135A1 (en) 1995-08-08 1995-08-08 Method and device for producing polyester yarns
    DE19529135 1995-08-08
    PCT/EP1996/003182 WO1997006293A1 (en) 1995-08-08 1996-07-19 Process and device for producing polyester yarns

    Publications (2)

    Publication Number Publication Date
    EP0843749A1 EP0843749A1 (en) 1998-05-27
    EP0843749B1 true EP0843749B1 (en) 2000-02-09

    Family

    ID=7768998

    Family Applications (1)

    Application Number Title Priority Date Filing Date
    EP96926368A Expired - Lifetime EP0843749B1 (en) 1995-08-08 1996-07-19 Process and device for producing polyester yarns

    Country Status (11)

    Country Link
    US (1) US5965073A (en)
    EP (1) EP0843749B1 (en)
    KR (1) KR100267601B1 (en)
    CN (1) CN1063497C (en)
    AU (1) AU6658096A (en)
    BR (1) BR9609889A (en)
    DE (2) DE19529135A1 (en)
    ES (1) ES2143772T3 (en)
    MX (1) MX9800950A (en)
    PT (1) PT843749E (en)
    WO (1) WO1997006293A1 (en)

    Families Citing this family (8)

    * Cited by examiner, † Cited by third party
    Publication number Priority date Publication date Assignee Title
    DE19816979A1 (en) * 1998-04-17 1999-10-21 Brown John Deutsche Eng Gmbh Method and device for producing polyester yarns
    KR20010019393A (en) * 1999-08-23 2001-03-15 박종계 A method for modifying a synthetic resin yarn by using a difference of cooling temperature and a device thereof
    EP1361300B1 (en) * 2000-12-20 2006-07-19 Teijin Limited Method for manufacturing polyester mixed fiber yarn
    CN1888167A (en) * 2006-07-14 2007-01-03 吕迎智 Method for producing crimped dacron filaments by hot roller twisting heating
    CN102776584B (en) * 2012-07-30 2013-12-18 苏州龙杰特种纤维股份有限公司 Method for producing high elastic fiber by using PET (polyethylene terephthalate) polyester, and high elastic fiber obtained by same
    KR101429701B1 (en) 2012-10-22 2014-08-12 한국생산기술연구원 Method and Apparatus for Manufacturing Conjugated Fiber, and Conjugated Fiber Manufactured thereby
    CN105420865A (en) * 2015-12-31 2016-03-23 江南大学 Elastic filament production method
    ES2908921T3 (en) * 2016-08-10 2022-05-04 Yamashin Filter Corp Fine fiber manufacturing method and fine fiber manufacturing apparatus

    Family Cites Families (7)

    * Cited by examiner, † Cited by third party
    Publication number Priority date Publication date Assignee Title
    EP0042664B1 (en) * 1980-06-24 1983-09-21 Imperial Chemical Industries Plc Polyester yarns produced by high speed melt-spinning processes
    JPH086203B2 (en) * 1986-07-03 1996-01-24 東レ株式会社 Method for producing thermoplastic synthetic fiber
    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
    DE4224453A1 (en) * 1991-08-02 1993-02-04 Barmag Barmer Maschf Multifilament spinning with improved product quality control - by partial drawing on take=off from spinneret with further drawing before winding
    CA2080621A1 (en) * 1992-03-30 1993-10-01 George M. Kent Continuous process for spinning and drawing polyamide and apparatus thereof
    JP2692513B2 (en) * 1992-11-10 1997-12-17 東レ株式会社 Method and apparatus for producing polyester fiber
    DE59601798D1 (en) * 1995-02-23 1999-06-10 Barmag Barmer Maschf Process for spinning, drawing and winding a synthetic thread

    Also Published As

    Publication number Publication date
    DE59604431D1 (en) 2000-03-16
    ES2143772T3 (en) 2000-05-16
    BR9609889A (en) 1999-12-21
    WO1997006293A1 (en) 1997-02-20
    KR19990036196A (en) 1999-05-25
    KR100267601B1 (en) 2000-10-16
    DE19529135A1 (en) 1997-02-13
    EP0843749A1 (en) 1998-05-27
    PT843749E (en) 2000-07-31
    MX9800950A (en) 1998-11-30
    CN1142546A (en) 1997-02-12
    CN1063497C (en) 2001-03-21
    AU6658096A (en) 1997-03-05
    US5965073A (en) 1999-10-12

    Similar Documents

    Publication Publication Date Title
    EP0363798B1 (en) Intermingled sewing-thread consisting of two components, and method for producing the same
    DE3617248C2 (en) Process for producing a composite thread from man-made fibers
    EP0373519B1 (en) Method for making a yarn textured by an air jet
    DE19653451C2 (en) Process for the production of a polyester multifilament yarn
    EP0843749B1 (en) Process and device for producing polyester yarns
    WO2014026902A1 (en) Melt-spinning process and melt-spinning apparatus for producing a crimped yarn
    DE2204535A1 (en) MELT SPINNING AND STRETCHING PROCESS
    DE19705113C2 (en) Stretching device and method for producing stretched plastic filaments
    DE102009037125A1 (en) Method for melt-spinning, drawing and winding multifilament thread during manufacture of synthetic fiber for textile applications, involves guiding bundle at specific drawing speed, and winding yarn into spool
    EP0346641B1 (en) Process for the production of uniform POY filaments
    EP0491012B1 (en) Process and device for making synthetic threads or fibres from polymers, especially polyamide, polyester or polypropylene
    EP1723273B1 (en) Process of making false twisted texturized monofilaments
    EP0846197B1 (en) Process for producing a high-strength, high-shrinkage polyamide 66 filament yarn
    EP2737114B1 (en) Method and device for producing an hmls yarn
    DE2207849A1 (en) METHOD OF MANUFACTURING TEXTURED MOLECULAR ORIENTED FEDES
    EP0400268B1 (en) Process and apparatus for the fabrication of non-textured yarn from thermoplastic filaments, especially polyester yarn
    WO1994001603A1 (en) Shaped-section fine-fibre filament yarn and method of producing it
    WO2008012339A1 (en) Method for the production of a curled synthetic thread
    DE2610327A1 (en) METHOD OF MANUFACTURING POLYAMIDE 6, POLYAMIDE 6,6 AND POLYESTER FILAMENT YARNS
    DE3225965A1 (en) METHOD FOR CONTINUOUSLY STRETCHING AND TEXTURING THREADS
    DE2651428A1 (en) MELT SPINNING AND STRETCHING PROCESS
    DE3229503A1 (en) Synthetic filaments
    DE2510917A1 (en) Extruded and drawn polyamide filament - is treated with oil contg water before being textured
    DE4004721A1 (en) Prodn. of textured synthetic yarn - using heater and aerodynamic entanglement for pre-shrink treatment
    DE2502568A1 (en) Heating multifil tows during drawing - in the production of spun staple yarn prior to crimping and cutting

    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: 19980123

    AK Designated contracting states

    Kind code of ref document: A1

    Designated state(s): BE DE ES FR GB IE IT LU NL PT

    GRAG Despatch of communication of intention to grant

    Free format text: ORIGINAL CODE: EPIDOS AGRA

    17Q First examination report despatched

    Effective date: 19990302

    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): BE DE ES FR GB IE IT LU NL PT

    ITF It: translation for a ep patent filed

    Owner name: ING. A. GIAMBROCONO & C. S.R.L.

    REF Corresponds to:

    Ref document number: 59604431

    Country of ref document: DE

    Date of ref document: 20000316

    GBT Gb: translation of ep patent filed (gb section 77(6)(a)/1977)

    Effective date: 20000411

    REG Reference to a national code

    Ref country code: IE

    Ref legal event code: FG4D

    Free format text: GERMAN

    REG Reference to a national code

    Ref country code: ES

    Ref legal event code: FG2A

    Ref document number: 2143772

    Country of ref document: ES

    Kind code of ref document: T3

    ET Fr: translation filed
    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: 20000719

    REG Reference to a national code

    Ref country code: PT

    Ref legal event code: SC4A

    Free format text: AVAILABILITY OF NATIONAL TRANSLATION

    Effective date: 20000505

    REG Reference to a national code

    Ref country code: GB

    Ref legal event code: 732E

    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

    BECA Be: change of holder's address

    Free format text: 20001129 *KRUPP UHDE G.M.B.M.:FRIEDRICH-UHDE-STRASSE 15, 44141 DORTMUND

    NLS Nl: assignments of ep-patents

    Owner name: KRUPP UHDE GMBH

    RAP2 Party data changed (patent owner data changed or rights of a patent transferred)

    Owner name: KRUPP UHDE GMBH

    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: 20010108

    26N No opposition filed
    REG Reference to a national code

    Ref country code: IE

    Ref legal event code: FD4D

    REG Reference to a national code

    Ref country code: FR

    Ref legal event code: TP

    NLT2 Nl: modifications (of names), taken from the european patent patent bulletin

    Owner name: KRUPP UHDE GMBH

    REG Reference to a national code

    Ref country code: PT

    Ref legal event code: PC4A

    Free format text: KRUPP UHDE GMBH DE

    Effective date: 20010220

    REG Reference to a national code

    Ref country code: GB

    Ref legal event code: IF02

    PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

    Ref country code: DE

    Payment date: 20070719

    Year of fee payment: 12

    PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

    Ref country code: ES

    Payment date: 20070727

    Year of fee payment: 12

    PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

    Ref country code: GB

    Payment date: 20070720

    Year of fee payment: 12

    PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

    Ref country code: NL

    Payment date: 20070716

    Year of fee payment: 12

    Ref country code: IT

    Payment date: 20070724

    Year of fee payment: 12

    Ref country code: BE

    Payment date: 20070802

    Year of fee payment: 12

    PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

    Ref country code: FR

    Payment date: 20070710

    Year of fee payment: 12

    REG Reference to a national code

    Ref country code: PT

    Ref legal event code: MM4A

    Free format text: LAPSE DUE TO NON-PAYMENT OF FEES

    Effective date: 20090119

    GBPC Gb: european patent ceased through non-payment of renewal fee

    Effective date: 20080719

    NLV4 Nl: lapsed or anulled due to non-payment of the annual fee

    Effective date: 20090201

    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: 20090203

    REG Reference to a national code

    Ref country code: FR

    Ref legal event code: ST

    Effective date: 20090331

    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 NON-PAYMENT OF DUE FEES

    Effective date: 20090119

    Ref country code: NL

    Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

    Effective date: 20090201

    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: 20080719

    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

    Effective date: 20080719

    Ref country code: FR

    Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

    Effective date: 20080731

    REG Reference to a national code

    Ref country code: ES

    Ref legal event code: FD2A

    Effective date: 20080721

    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: 20080721

    PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

    Ref country code: PT

    Payment date: 20070705

    Year of fee payment: 12

    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: 20080731