EP2737114A1 - Method and device for producing an hmls yarn - Google Patents

Method and device for producing an hmls yarn

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Publication number
EP2737114A1
EP2737114A1 EP12745993.1A EP12745993A EP2737114A1 EP 2737114 A1 EP2737114 A1 EP 2737114A1 EP 12745993 A EP12745993 A EP 12745993A EP 2737114 A1 EP2737114 A1 EP 2737114A1
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EP
European Patent Office
Prior art keywords
pair
rollers
draw
thread
roller pair
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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.)
Granted
Application number
EP12745993.1A
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German (de)
French (fr)
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EP2737114B1 (en
Inventor
Lassaad NASRI
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Truetzschler Switzerland AG
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Truetzschler Switzerland AG
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Publication of EP2737114A1 publication Critical patent/EP2737114A1/en
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Publication of EP2737114B1 publication Critical patent/EP2737114B1/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

  • the present invention relates to an apparatus for producing an HMLS yarn of polyester (PET).
  • HMLS High Modulus Low Shrinkage yarns are mainly used in tire reinforcement, the so-called Tire Cord.
  • HMLS yarns made of polyester (PET) a multiplicity of filament strands are extruded through spinnerets in a spinning device and subsequently cooled. The cooling is usually done with air in a so-called blow duct. The filament strands are combined into a yarn and drawn in a draw zone. Subsequently, the yarn is wound on a spool.
  • the starting material used for the production of the game and the manner in which the filament strands are drawn influence the properties of the end product to be achieved. It should be noted that a large proportion of the total stretch is already made between the spinneret and the collection of filament strands into one yarn.
  • the filament strands leave the spinneret during the production of HMLS yarns at a speed of about 10 m / min and are withdrawn through an inlet roller at the beginning of the draw zone at about 2 ⁇ 00 m / min. Between the spinneret and the inlet roller, the filament strands are thus stretched by about two hundred times the length. This results in the consequence in the draw zone as well as on the winder very high speeds of the rollers and coils. Due to the high speed and thread guide elements are heavily stressed. This leads to high wear and a correspondingly short life of the elements used.
  • WO2009 / 061161 discloses such a method.
  • a further increase in the strength of the polyester threads is achieved by the use of a polymer melt having a high intrinsic viscosity.
  • the polymer melt is kept under a nitrogen atmosphere to avoid contact with the ambient air.
  • CONFIRMATION COPY Filament strands are passed immediately after the spinnerets through a reheater, which further improves a stretchability of the filament strands.
  • the apparatus for producing a HMLS yarn of polyester comprises a spinning device having a spinneret for extruding and a blowing chute for cooling a plurality of filament strands, a device for applying a spin finish and for combining the filament strands into a thread, with a winding device and with a draw zone provided between the spinning device and the winding device for drawing the thread.
  • the draw zone is formed by an inlet roller pair arranged downstream of the spinning device and subsequent four to six pairs of draw rolls.
  • the first pairs of stretching rollers are provided with a heating device and the last pair of stretching rollers is provided with a cooling device. At least one of the two rollers of a respective pair of stretch rollers is provided with a heating or cooling device.
  • the speed at which the thread is withdrawn from the spinning device through the inlet roller pair is 500 m / min to 700 m / min.
  • the active cooling of the thread over the last pair of stretching rollers results in an influence on the molecular chains in the polyester, which leads to an increase in the strength.
  • the crystallinity and the orientation of the molecules are influenced and the molecular structure is fixed by the cooling. Due to the active cooling of the filament at the end of the draw zone, the distortion of the filament strands in the spinning process can be greatly increased compared to the conventional methods. be reduced and still produce a thread with a high modulus at low shrinkage.
  • the inlet roller pair as well as the stretch roller pairs can be designed as so-called duos with two driven rollers or as so-called monos with a driven roller and an associated Beilaufrolle.
  • a run-in roll and five pairs of draw rolls are used.
  • the inlet roller as a mono and the stretch roller pairs are designed as a duo.
  • the respective pairs of rollers are repeatedly wrapped by the thread.
  • a surface temperature of the roller provided with the cooling device of the last stretch roller pair of less than 100 ° C is provided.
  • the surface temperature is less than 80 ° C.
  • the cooling effect on the thread pair looping around the pair of stretching rollers can additionally be increased, since both rollers of the last pair of stretching rollers are provided with a cooling device.
  • the cooling device is best suited for liquid cooling. Heat is extracted from the thread over the surface of the roll. The heat is dissipated via a circulating in the role of coolant and withdrawn in a heat exchanger of the cooling liquid again.
  • the cooling liquid is regulated in its temperature such that the surface temperature of the roll does not exceed the predetermined temperature of 100 ° C, preferably 80 ° C.
  • Such cooling systems are known from the prior art.
  • the draw zone is formed by the inlet roller pair and the following pairs of stretch rollers.
  • the Einlaufrollencru are arranged downstream of five pairs of draw rolls. Over the entire draw zone, a total draw of the yarn entering from the spinning device is provided to three to eight times its original length. Preferably, the total stretch is five to seven times.
  • the draws are between the pair of infeed rollers and the first pair of draw rollers .02 to 1.1, between the first pair of draw rollers and the second pair of draw rollers 4 to 6, between the second pair of draw rollers and the third pair of draw rollers 1.2 to 2.0, between the third linear roller.
  • the draws 0.4 are between the first pair of draw rolls and the second draw roll pair 4.6, between the second pair of draw rolls and the third draw roll pair 1.3, between the third draw roll pair and the fourth draw roll pair 0.96 and between the fourth draw roll pair and the fifth draw roll pair 0.97.
  • the actual stretching is carried out in each case between the stretched roller pairs.
  • the two rollers of a draw roller pair are operated at substantially the same speed.
  • the temperatures of the heated stretch rollers are provided.
  • at least one of the two rollers of a draw roller pair is heated.
  • both rollers of a pair of draw rollers are heated to the same temperature.
  • the surface temperatures are in the range 40 ° C to 90 ° C for the first pair of stretch rollers, 80 ° C to 170 ° C for the second
  • Stretching roller pair 120 ° C to 280 ° C for the third pair of stretching rollers and 120 ° C to 250 ° C for the fourth pair of stretching rollers.
  • the surface temperatures are 85 ° C for the first pair of draw rolls, 110 ° C for the second pair of draw rolls, 250 ° C for the third pair of draw rolls, and 250 ° C for the fourth pair of draw rolls.
  • the fifth pair of draw rolls due to the cooled surface, has the effect of influencing and fixing the molecular orientation within the individual filaments of the thread, thereby providing higher strength.
  • threads can be produced which have a strength of more than 70 cN / tex with an elongation of less than 13%.
  • the threads thus produced also have a
  • the process for producing an HMLS yarn from a polyester melt (PET) comprises the following process steps:
  • a spin finish is applied to the thread, the application of a spin finish improves the sliding properties of the individual filaments with each other and with respect to the rollers in the following
  • the yarn is withdrawn from the blower shaft with a pair of inlet rollers at a speed of 400 m / min to 600 m / min, preferably 475 m / min
  • the yarn is drawn with a total draw of the yarn of 3 to 8 over the pair of infeed rolls and four to six successive draw pairs of rolls, heating the first pair of draw rolls and cooling the last pair of draw rolls
  • the thread is wound up with a winding device.
  • the filament strands between the spinneret and the inlet roller pair are stretched 50 to 80 times, preferably 60 times, and wound at a speed of 1'500 to 3'500 m / min.
  • the synthetic polyester melt preferably used in the process according to the invention has an intrinsic viscosity of less than 0.9 dl / gr.
  • FIG. Figure 1 shows a schematic representation of an embodiment of an apparatus for producing an endless thread of a synthetic polymer melt.
  • a spinning device 1 With a spinning device 1, a plurality of filament strands 4 are extruded at a temperature of 40 ° to 50 ° above the melting temperature of the polyester used.
  • the spinning device 1 comprises a spinneret 2 through which the individual filaments of the filament strand are formed.
  • the filament strands 4 are fed from the spinneret 2 at a certain speed V 1 to a blowing shaft 3.
  • the filament strands 4 pass through the blowing shaft 3 and are cooled to a temperature below 50 ° C.
  • the cooling is usually carried out by blowing the filament strands 4 with cooled blast air. Subsequently, the filament strands 4 are combined into a thread 6 and provided with a spin finish 5.
  • the yarn 6 passes to a pair of inlet rollers 7.
  • the inlet roller pair 7 consists of a driven roller and a non-driven auxiliary pulley. Through the inlet roller pair 7, the withdrawal speed V2 of the thread from the blow duct 3 is determined. The difference between the two velocities V1 and V2 results in the stretching of the filament strands 4 in the spinning process.
  • the Filamentsrzane 4 are withdrawn through the inlet roller 7 with a relation to the spinning speed V1 increased speed V2.
  • the thread 6 is guided over five pairs of stretching rollers 8, 9, 10, 11, 12.
  • the inlet roller pair 7 and the stretch roller pairs 8, 9, 10, 11, 12 are wrapped by the thread 6 several times.
  • the two rollers of a draw roller pair 8, 9, 10, 11, 12 are operated at substantially the same speed.
  • the thread 6 is stretched in each case between the pairs of draw rolls 8, 9, 10, 11, 12 and the first pair of draw rolls 8 and the pair of inlet rolls 7.
  • the former stretch roller pairs 8, 9, 10, 11 are provided with a heater (not shown).
  • the last stretch roller pair 12, however, is provided with a cooling device 14. At least one roller of the draw roller pair 12 is connected to the cooling device 14.
  • the introduced through the thread 6 in the stretch rollers of the draw roller pair 12 over the surface heat is dissipated by means of a coolant via coolant connections 13 to the cooling device 14.
  • the cooling device consists essentially of a heat exchanger, via which the in the coolant contained heat can be dissipated before this in turn is supplied to the stretch roller pair 8. To improve the efficiency, both rollers of the draw roller pair 12 could be connected to the cooling device 14.
  • the yarn 6 is fed to a winding device 16 via a swirling device 15 and wound up by it at a speed V3.
  • the speed V3 of the thread 6 on the winding device 16 is determined by the speed V1 of the filament strand 4 immediately after the spinneret 2 and the entire drawing of the filament strands 4 and the thread 6 on their way from the spinneret 2 via the blowing shaft 3 and the draw zone Winding device 16.

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  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • General Chemical & Material Sciences (AREA)
  • Yarns And Mechanical Finishing Of Yarns Or Ropes (AREA)
  • Spinning Methods And Devices For Manufacturing Artificial Fibers (AREA)
  • Adornments (AREA)
  • Artificial Filaments (AREA)

Abstract

The invention relates to a method and to a device for producing an HMLS yarn from a polyester melt (PET). The device comprises a spinning apparatus having a spinneret for extruding and a quench box for cooling a plurality of filament strands, a device for applying a spinning preparation and for combining the filament strands to form one thread, a winding apparatus and a drafting zone for drawing the thread that is provided between the spinning apparatus and the winding apparatus. The drafting zone is formed by a feed roller pair arranged downstream of the spinning apparatus and subsequent four to six drafting roller pairs. The first drafting roller pairs are provided with a heating apparatus and the last drafting roller pair is provided with a cooling apparatus. At least one of the two rollers of each drafting roller pair is provided with a heating or cooling apparatus. The speed with which the feed roller pair draws off the thread from the spinning apparatus is between 400 m/min and 600 m/min.

Description

Verfahren und Vorrichtung zur Herstellung eines HMLS Garnes  Method and device for producing an HMLS yarn
Die vorliegende Erfindung betrifft eine Vorrichtung zur Herstellung eines HMLS Garnes aus Polyester (PET). The present invention relates to an apparatus for producing an HMLS yarn of polyester (PET).
Sogenannte HMLS (High Modulus Low Shrinkage) Garne finden Anwendung vor allem in der Reifenverstärkung, dem sogenannten Tire Cord. Bei der Herstellung von HMLS Garnen aus Polyester (PET) werden in einer Spinneinrichtung durch Spinndüsen eine Vielzahl von Filamentsträngen extrudiert und anschliessend abgekühlt. Die Abkühlung erfolgt zumeist mit Luft in einem sogenannten Blasschacht. Die Filamentstränge werden zu einem Garn zusammengefasst und in einer Streckzone verstreckt. Anschliessend wird das Garn auf eine Spule aufgewickelt. Das für die Herstellung der Game benutzte Ausgangsprodukt und die Art und Weise der Verstreckung der Filamentstränge beeinflussen die zu erzielenden Eigenschaften des Endproduktes. Hier ist hervorzuheben, dass ein grosser Anteil der Gesamtverstreckung bereits zwischen der Spinndüse und der Zusammenfassung der Filamentstränge zu einem Garn vorgenommen wird. So-called HMLS (High Modulus Low Shrinkage) yarns are mainly used in tire reinforcement, the so-called Tire Cord. In the production of HMLS yarns made of polyester (PET), a multiplicity of filament strands are extruded through spinnerets in a spinning device and subsequently cooled. The cooling is usually done with air in a so-called blow duct. The filament strands are combined into a yarn and drawn in a draw zone. Subsequently, the yarn is wound on a spool. The starting material used for the production of the game and the manner in which the filament strands are drawn influence the properties of the end product to be achieved. It should be noted that a large proportion of the total stretch is already made between the spinneret and the collection of filament strands into one yarn.
Die Filamentstränge verlassen die Spinndüse bei der Herstellung von HMLS Garnen mit einer Geschwindigkeit von etwa 10 m/Min und werden durch eine Einlaufrolle zu Beginn der Streckzone mit etwa 2Ό00 m/Min abgezogen. Zwischen der Spinndüse und der Einlaufrolle werden die Filamentstränge demnach um etwa die zweihundertfache Länge verstreckt. Dadurch ergeben sich in der Folge in der Streckzone wie auch am Wickler sehr hohe Drehzahlen der Rollen und Spulen. Durch die hohe Geschwindigkeit werden auch Fadenführungselemente stark beansprucht. Dies führt zu einem hohen Ver- schleiss und einer entsprechend kurzen Lebensdauer der eingesetzten Elemente. The filament strands leave the spinneret during the production of HMLS yarns at a speed of about 10 m / min and are withdrawn through an inlet roller at the beginning of the draw zone at about 2Ό00 m / min. Between the spinneret and the inlet roller, the filament strands are thus stretched by about two hundred times the length. This results in the consequence in the draw zone as well as on the winder very high speeds of the rollers and coils. Due to the high speed and thread guide elements are heavily stressed. This leads to high wear and a correspondingly short life of the elements used.
Aus dem Stand der Technik sind auch weitergehende Verfahren zur Herstellung von Fäden mit hoher Festigkeit bekannt. Beispielsweise offenbart die WO2009/061161 ein derartiges Verfahren. Dabei wird eine weitere Erhöhung der Festigkeit der Polyesterfäden erreicht durch die Verwendung einer Polymerschmelze mit einer hohen Grenzviskosität. Die Polymerschmelze wird unter einer Stickstoffatmosphäre gehalten um einen Kontakt zur Umgebungsluft zu vermeiden. Die aus der Polymerschmelze gesponnenen The prior art also discloses further methods for producing high-strength threads. For example, WO2009 / 061161 discloses such a method. In this case, a further increase in the strength of the polyester threads is achieved by the use of a polymer melt having a high intrinsic viscosity. The polymer melt is kept under a nitrogen atmosphere to avoid contact with the ambient air. The spun from the polymer melt
BESTÄTIGUNGSKOPIE Filamentstränge werden unmittelbar nach den Spinndüsen durch einen Nacherhitzer geführt, welcher eine Verstreckbarkeit der Filamentstränge noch verbessert. CONFIRMATION COPY Filament strands are passed immediately after the spinnerets through a reheater, which further improves a stretchability of the filament strands.
Die aus dem Stand der Technik bekannten Verfahren zur Herstellung von hochfesten Fäden haben jeweils ein entsprechend qualitativ hochwertiges Polymer als Ausgangsprodukt. The processes known from the prior art for the production of high-strength filaments each have a correspondingly high-quality polymer as the starting material.
Es ist daher die Aufgabe der Erfindung eine Vorrichtung und ein Verfahren zu schaffen, welche die Herstellung eines HMLS Garns ermöglicht, ausgehend von einem kosten- günstigen niederwertigen Polyester, bei welcher ein geringer Verschleiss auftritt. It is therefore the object of the invention to provide an apparatus and a method which enables the production of an HMLS yarn, starting from a low-cost low-cost polyester, in which a low wear occurs.
Die Aufgabe wird gelöst durch eine Vorrichtung und ein Verfahren mit den Merkmalen der unabhängigen Ansprüche. Die Vorrichtung zur Herstellung eines HMLS Garnes aus Polyester (PET) umfasst eine Spinneinrichtung mit einer Spinndüse zürn Extrudieren und einem Blasschacht zum Abkühlen einer Vielzahl von Filamentsträngen, eine Vorrichtung zum Aufbringen einer Spinnpräparation und zum Zusammenfassen der Filamentstränge zu einem Faden, mit einer Spuleinrichtung und mit einer zwischen der Spinneinrichtung und der Spuleinrich- tung vorgesehenen Streckzone zur Verstreckung des Fadens. The object is achieved by a device and a method having the features of the independent claims. The apparatus for producing a HMLS yarn of polyester (PET) comprises a spinning device having a spinneret for extruding and a blowing chute for cooling a plurality of filament strands, a device for applying a spin finish and for combining the filament strands into a thread, with a winding device and with a draw zone provided between the spinning device and the winding device for drawing the thread.
Die Streckzone wird gebildet durch eine nach der Spinneinrichtung angeordnetes Einlaufrollenpaar und nachfolgende vier bis sechs Streckrollenpaare. Die ersten Streckrollenpaare sind mit einer Heizeinrichtung und das letzte Streckrollenpaar ist mit einer Kühleinrichtung versehen. Zumindest eine der beiden Rollen eines jeweiligen Streckrol- lenpaares ist mit einer Heiz- oder Kühleinrichtung versehen. Die Geschwindigkeit mit welcher der Faden durch das Einlaufrollenpaar von der Spinneinrichtung abgezogen wird beträgt 500 m/Min bis 700 m/Min. Durch die aktive Kühlung des Fadens über das letzte Streckrollenpaar wird eine Beeinflussung der Molekülketten im Polyester erreicht, welche zu einer Erhöhung der Festigkeit führt. Dabei wird die Kristallinität sowie die Orientierung der Moleküle beeinflusst und die Molekülstruktur durch die Kühlung fixiert. Durch die aktive Kühlung des Fadens am Ende der Streckzone kann der Verzug der Filamentstränge im Spinnprozess gegenüber den herkömmlichen Verfahren stark ver- ringert werden und trotzdem ein Faden mit einem hohen Modul bei geringer Schwindung hergestellt werden. The draw zone is formed by an inlet roller pair arranged downstream of the spinning device and subsequent four to six pairs of draw rolls. The first pairs of stretching rollers are provided with a heating device and the last pair of stretching rollers is provided with a cooling device. At least one of the two rollers of a respective pair of stretch rollers is provided with a heating or cooling device. The speed at which the thread is withdrawn from the spinning device through the inlet roller pair is 500 m / min to 700 m / min. The active cooling of the thread over the last pair of stretching rollers results in an influence on the molecular chains in the polyester, which leads to an increase in the strength. The crystallinity and the orientation of the molecules are influenced and the molecular structure is fixed by the cooling. Due to the active cooling of the filament at the end of the draw zone, the distortion of the filament strands in the spinning process can be greatly increased compared to the conventional methods. be reduced and still produce a thread with a high modulus at low shrinkage.
Das Einlaufrollenpaar wie auch die Streckrollenpaare können als sogenannte Duos mit zwei angetriebenen Rollen oder als sogenannte Monos mit einer angetriebenen Rolle und einer zugeordneten Beilaufrolle ausgebildet sein. In einer bevorzugten Ausführungsform werden eine Einlaufrolle und fünf Streckrollenpaare eingesetzt. Wobei die Einlaufrolle als Mono und die Streckrollenpaare als Duo ausgebildet sind. Die jeweiligen Rollenpaare werden mehrfach von dem Faden umschlungen. The inlet roller pair as well as the stretch roller pairs can be designed as so-called duos with two driven rollers or as so-called monos with a driven roller and an associated Beilaufrolle. In a preferred embodiment, a run-in roll and five pairs of draw rolls are used. Wherein the inlet roller as a mono and the stretch roller pairs are designed as a duo. The respective pairs of rollers are repeatedly wrapped by the thread.
Um den durch die Kühlung des Fadens hervorgerufenen Effekt auszubilden, ist eine Oberflächentemperatur der mit der Kühleinrichtung versehenen Rolle des letzten Streckrollenpaares von weniger als 100°C vorgesehen. Bevorzugterweise ist die Oberflächentemperatur kleiner 80°C. Die Kühlwirkung auf den das Streckrollenpaar mehr- fach umschlingenden Faden kann zusätzlich erhöht werden, dadurch dass beide Rollen des letzen Streckrollenpaares mit einer Kühleinrichtung versehen sind. Als Kühleinrichtung eignet sich am Besten eine Flüssigkeitskühlung. Über die Oberfläche der Rolle wird dem Faden Wärme entzogen. Die Wärme wird über eine in der Rolle zirkulierende Kühlflüssigkeit abgeführt und in einem Wärmetauscher der Kühlflüssigkeit wiederum entzogen. Die Kühlflüssigkeit wird in ihrer Temperatur derart geregelt, dass die Oberflächentemperatur der Rolle die vorgegebene Temperatur von 100°C, bevorzugterweise 80°C nicht übersteigt. Derartige Kühlsysteme sind aus dem Stand der Technik bekannt. In order to form the effect caused by the cooling of the thread, a surface temperature of the roller provided with the cooling device of the last stretch roller pair of less than 100 ° C is provided. Preferably, the surface temperature is less than 80 ° C. The cooling effect on the thread pair looping around the pair of stretching rollers can additionally be increased, since both rollers of the last pair of stretching rollers are provided with a cooling device. The cooling device is best suited for liquid cooling. Heat is extracted from the thread over the surface of the roll. The heat is dissipated via a circulating in the role of coolant and withdrawn in a heat exchanger of the cooling liquid again. The cooling liquid is regulated in its temperature such that the surface temperature of the roll does not exceed the predetermined temperature of 100 ° C, preferably 80 ° C. Such cooling systems are known from the prior art.
Die Streckzone wird gebildet durch das Einlaufrollenpaar und die nachfolgenden Streck- rollenpaare. Bevorzugterweise sind dem Einlaufrollenpaar fünf Streckrollenpaare nachgeordnet. Über die gesamte Streckzone ist eine Gesamtverstreckung des aus der Spinneinrichtung einlaufenden Fadens auf das drei- bis achtfache seiner ursprünglichen Länge vorgesehen. Bevorzugterweise beträgt die Gesamtverstreckung das fünf- bis siebenfache. Dabei betragen die Verstreckungen im Einzelnen zwischen dem Einlauf- rollenpaar und dem ersten Streckrollenpaar .02 bis 1.1 , zwischen dem ersten Streckrollenpaar und dem zweiten Streckrollenpaar 4 bis 6, zwischen dem zweiten Streckrollenpaar und dem dritten Streckrollenpaar 1.2 bis 2.0, zwischen dem dritten Streckroi- lenpaar und dem vierten Streckrollenpaar 0.7 bis 1.2 und zwischen dem vierten Streckrollenpaar und dem fünften Streckrollenpaar 0.7 bis 1.2. In einer bevorzugten Ausführung betragen die Verstreckungen 0.4 zwischen dem ersten Streckrollenpaar und dem zweiten Streckrollenpaar 4.6, zwischen dem zweiten Streckrollenpaar und dem dritten Streckrollenpaar 1.3, zwischen dem dritten Streckrollenpaar und dem vierten Streckrollenpaar 0.96 und zwischen dem vierten Streckrollenpaar und dem fünften Streckrollenpaar 0.97. Die eigentliche Verstreckung wird jeweils zwischen den Streckrollenpaaren vorgenommen. Die beiden Rollen eines Streckrollenpaares werden im wesentlichen mit der gleichen Drehzahl betrieben. The draw zone is formed by the inlet roller pair and the following pairs of stretch rollers. Preferably, the Einlaufrollenpaar are arranged downstream of five pairs of draw rolls. Over the entire draw zone, a total draw of the yarn entering from the spinning device is provided to three to eight times its original length. Preferably, the total stretch is five to seven times. Specifically, the draws are between the pair of infeed rollers and the first pair of draw rollers .02 to 1.1, between the first pair of draw rollers and the second pair of draw rollers 4 to 6, between the second pair of draw rollers and the third pair of draw rollers 1.2 to 2.0, between the third linear roller. pair and the fourth pair of draw rollers 0.7 to 1.2 and between the fourth pair of draw rollers and the fifth pair of draw rollers 0.7 to 1.2. In a preferred embodiment, the draws 0.4 are between the first pair of draw rolls and the second draw roll pair 4.6, between the second pair of draw rolls and the third draw roll pair 1.3, between the third draw roll pair and the fourth draw roll pair 0.96 and between the fourth draw roll pair and the fifth draw roll pair 0.97. The actual stretching is carried out in each case between the stretched roller pairs. The two rollers of a draw roller pair are operated at substantially the same speed.
Entsprechend der verwendeten Polyesterschmelze sind die Temperaturen der beheizten Streckrollen vorzusehen. Es ist jeweils zumindest eine der beiden Rollen eines Streckrollenpaares beheizt. Bevorzugterweise werden beide Rollen eines Streckrollenpaares auf die gleiche Temperatur beheizt. Die Oberflächentemperaturen sind im Be- reich 40°C bis 90°C für das erste Streckrollenpaar, 80°C bis 170°C für das zweiteDepending on the polyester melt used, the temperatures of the heated stretch rollers are provided. In each case, at least one of the two rollers of a draw roller pair is heated. Preferably, both rollers of a pair of draw rollers are heated to the same temperature. The surface temperatures are in the range 40 ° C to 90 ° C for the first pair of stretch rollers, 80 ° C to 170 ° C for the second
Streckrollenpaar, 120°C bis 280°C für das dritte Streckrollenpaar und 120°C bis 250°C für das vierte Streckrollenpaar. In einer bevorzugten Ausführungsform betragen die Oberflächentemperaturen 85°C für das erste Streckrollenpaar, 110°C für das zweite Streckrollenpaar, 250°C für das dritte Streckrollenpaar und 250°C für das vierte Streck- rollenpaar. Stretching roller pair, 120 ° C to 280 ° C for the third pair of stretching rollers and 120 ° C to 250 ° C for the fourth pair of stretching rollers. In a preferred embodiment, the surface temperatures are 85 ° C for the first pair of draw rolls, 110 ° C for the second pair of draw rolls, 250 ° C for the third pair of draw rolls, and 250 ° C for the fourth pair of draw rolls.
Das fünfte Streckrollenpaar hat aufgrund der gekühlten Oberfläche die Wirkung, dass die Molekül-Orientierung innerhalb der einzelnen Filamente des Fadens beeinflusst und fixiert wird und sich dadurch eine höhere Festigkeit ergibt. Dadurch können Fäden her- gestellt werden, welche eine Festigkeit von mehr als 70 cN/tex bei einer Dehnung von weniger als 13% aufweisen. Die derart hergestellten Fäden weisen zudem eine The fifth pair of draw rolls, due to the cooled surface, has the effect of influencing and fixing the molecular orientation within the individual filaments of the thread, thereby providing higher strength. As a result, threads can be produced which have a strength of more than 70 cN / tex with an elongation of less than 13%. The threads thus produced also have a
Schwindung von weniger als 4%, bevorzugterweise weniger als 3,2% auf. Zur Messung der Schwindung wird der Faden einer Temperatur von 180°C während einer Zeitdauer von 15 Minuten ausgesetzt. Während dieser Messung wird der Faden unter einer kon- stanten Spannung von 0.1 cN/tex gehalten (BISFA-Norm). Das Verfahren zur Herstellung eines HMLS Garnes aus einer Polyesterschmelze (PET) umfasst folgende Verfahrensschritte: Shrinkage of less than 4%, preferably less than 3.2%. To measure the shrinkage, the thread is exposed to a temperature of 180 ° C for a period of 15 minutes. During this measurement, the thread is held under a constant tension of 0.1 cN / tex (BISFA standard). The process for producing an HMLS yarn from a polyester melt (PET) comprises the following process steps:
a) aus einer Polyesterschmelze werden eine Vielzahl von Filamentsträngen in einer Spinnvorrichtung durch eine Spinndüse mit einer Geschwindigkeit von 5 bis 15 m/Min, vorzugsweise 12 m/Min, extrudiert a) from a polyester melt, a plurality of filament strands are extruded in a spinning device through a spinneret at a speed of 5 to 15 m / min, preferably 12 m / min
b) die Filamentstränge werden in einem Blasschacht abgekühlt und anschliessend an den Blasschacht zu einem Faden zusammengefasst b) the filament strands are cooled in a blower shaft and then combined to form a thread at the blower shaft
c) anschliessend wird auf den Faden eine Spinnpräparation aufgebracht, das Aufbringen einer Spinnpräparation verbessert die Gleiteigenschaften der einzelnen Filamente untereinander und gegenüber den Rollen in der nachfolgendenc) then a spin finish is applied to the thread, the application of a spin finish improves the sliding properties of the individual filaments with each other and with respect to the rollers in the following
Streckzone stretching zone
d) der Faden wird aus dem Blasschacht mit einem Einlaufrollenpaar mit einer Geschwindigkeit von 400 m/Min bis 600 m/Min, vorzugsweise mit 475 m/Min, abgezogen d) the yarn is withdrawn from the blower shaft with a pair of inlet rollers at a speed of 400 m / min to 600 m / min, preferably 475 m / min
e) in einer nachfolgenden Streckzone wird der Fadens mit einer Gesamtverstreckung des Garns von 3 bis 8 über das Einlaufrollenpaar und vier bis sechs aufeinanderfolgende Streckrollenpaare verstreckt, wobei die ersten Streckrollenpaare beheizt und das letzte Streckrollenpaar gekühlt werden e) in a subsequent draw zone, the yarn is drawn with a total draw of the yarn of 3 to 8 over the pair of infeed rolls and four to six successive draw pairs of rolls, heating the first pair of draw rolls and cooling the last pair of draw rolls
f) anschliessend an die Streckzone wird der Fadens mit einer Spuleinrichtung auf- gespult. f) subsequent to the draw zone, the thread is wound up with a winding device.
Bevorzugterweise werden die Filamentstränge zwischen der Spinndüse und dem Einlaufrollenpaar um das 50- bis 80-fache, bevorzugterweise um das 60-fache verstreckt und mit einer Geschwindigkeit von 1 '500 bis 3'500 m/Min aufgespult. Preferably, the filament strands between the spinneret and the inlet roller pair are stretched 50 to 80 times, preferably 60 times, and wound at a speed of 1'500 to 3'500 m / min.
Die bevorzugt im erfindungsgemässen Verfahren verwendete synthetische Polyesterschmelze hat eine Grenzviskosität kleiner 0.9 dl/gr. The synthetic polyester melt preferably used in the process according to the invention has an intrinsic viscosity of less than 0.9 dl / gr.
Im Folgenden wird die Erfindung anhand einer beispielhaften Ausführungsform anhand der Figur 1 näher erläutert. Figur 1 zeigt in schematischer Darstellung eine Ausführungsform einer Vorrichtung zur Herstellung eines endlosen Fadens aus einer synthetischen Polymerschmelze. Mit einer Spinnvorrichtung 1 wird eine Vielzahl von Filamentsträngen 4 bei einer Temperatur von 40° bis 50° über der Schmelztemperatur des verwendeten Polyesters extrudiert. Die Spinnvorrichtung 1 umfasst eine Spinndüse 2, durch welche die einzelnen Filamente des Filamentstranges geformt werden. Die Filamentstränge 4 werden aus der Spinndüse 2 mit einer bestimmten Geschwindigkeit V1 einem Blasschacht 3 zugeführt Die Filamentstränge 4 durchlaufen den Blasschacht 3 und werden dabei abgekühlt auf eine Temperatur unter 50° C. Die Abkühlung erfolgt dabei meist durch Anblasen der Filamentstränge 4 mit gekühlter Blasluft. Anschliessend werden die Filamentstränge 4 zu einem Faden 6 zusammengefasst und mit einer Spinnpräparation 5 versehen. Der Faden 6 gelangt zu einem Einlaufrollenpaar 7. Das Einlaufrollenpaar 7 besteht aus einer angetriebenen Rolle und einer nicht angetriebenen Beilaufrolle. Durch das Einlaufrollenpaar 7 wird die Abzugsgeschwindigkeit V2 des Fadens aus dem Blasschacht 3 bestimmt. Die Differenz zwischen den beiden Geschwindigkeiten V1 und V2 ergibt die Verstreckung der Filamentstränge 4 im Spinnprozess. Die Filamentsränge 4 werden durch die Einlaufrolle 7 mit einer gegenüber der Spinngeschwindigkeit V1 erhöhten Geschwindigkeit V2 abgezogen. Anschliessend an das Einlaufrollenpaar 7 wird der Faden 6 über fünf Streckrollenpaare 8, 9, 10, 11 , 12 geführt. Das Einlaufrollenpaar 7 und die Streckrollenpaare 8, 9, 10, 11 , 12 werden vom Faden 6 mehrfach umschlungen. Die beiden Rollen eines Streckrollenpaares 8, 9, 10, 11 , 12 werden im Wesentlichen mit der gleichen Drehzahl betrieben. Dadurch erfolgt eine Verstreckung des Fadens 6 jeweils zwischen den Streckrollenpaaren 8, 9, 10, 11 , 12 und dem ersten Streckrollenpaar 8 und dem Einlaufrollenpaar 7. In the following, the invention will be explained in greater detail on the basis of an exemplary embodiment with reference to FIG. Figure 1 shows a schematic representation of an embodiment of an apparatus for producing an endless thread of a synthetic polymer melt. With a spinning device 1, a plurality of filament strands 4 are extruded at a temperature of 40 ° to 50 ° above the melting temperature of the polyester used. The spinning device 1 comprises a spinneret 2 through which the individual filaments of the filament strand are formed. The filament strands 4 are fed from the spinneret 2 at a certain speed V 1 to a blowing shaft 3. The filament strands 4 pass through the blowing shaft 3 and are cooled to a temperature below 50 ° C. The cooling is usually carried out by blowing the filament strands 4 with cooled blast air. Subsequently, the filament strands 4 are combined into a thread 6 and provided with a spin finish 5. The yarn 6 passes to a pair of inlet rollers 7. The inlet roller pair 7 consists of a driven roller and a non-driven auxiliary pulley. Through the inlet roller pair 7, the withdrawal speed V2 of the thread from the blow duct 3 is determined. The difference between the two velocities V1 and V2 results in the stretching of the filament strands 4 in the spinning process. The Filamentsränge 4 are withdrawn through the inlet roller 7 with a relation to the spinning speed V1 increased speed V2. Following the pair of inlet rollers 7, the thread 6 is guided over five pairs of stretching rollers 8, 9, 10, 11, 12. The inlet roller pair 7 and the stretch roller pairs 8, 9, 10, 11, 12 are wrapped by the thread 6 several times. The two rollers of a draw roller pair 8, 9, 10, 11, 12 are operated at substantially the same speed. As a result, the thread 6 is stretched in each case between the pairs of draw rolls 8, 9, 10, 11, 12 and the first pair of draw rolls 8 and the pair of inlet rolls 7.
Die ersteren Streckrollenpaare 8, 9, 10, 11 sind mit einer Heizeinrichtung (nicht dargestellt) versehen. Das letzte Streckrollenpaar 12 hingegen ist mit einer Kühlvorrichtung 14 versehen. Es ist zumindest eine Rolle des Streckrollenpaares 12 mit der Kühleinrichtung 14 verbunden. Die durch den Faden 6 in die Streckrollen des Streckrollenpaares 12 über deren Oberfläche eingebrachte Wärme wird mit Hilfe eines Kühlmittels über Kühlmittelverbindungen 13 zur Kühlvorrichtung 14 abgeführt. Die Kühlvorrichtung besteht dabei im Wesentlichen aus einem Wärmetauscher, über welchen die im Kühlmittel enthaltene Wärme abgeführt werden kann bevor dieses wiederum dem Streckrollenpaar 8 zugeführt wird. Zur Verbesserung des Wirkungsgrades könnten auch beide Rollen des Streckrollenpaares 12 mit der Kühleinrichtung 14 verbunden sein. The former stretch roller pairs 8, 9, 10, 11 are provided with a heater (not shown). The last stretch roller pair 12, however, is provided with a cooling device 14. At least one roller of the draw roller pair 12 is connected to the cooling device 14. The introduced through the thread 6 in the stretch rollers of the draw roller pair 12 over the surface heat is dissipated by means of a coolant via coolant connections 13 to the cooling device 14. The cooling device consists essentially of a heat exchanger, via which the in the coolant contained heat can be dissipated before this in turn is supplied to the stretch roller pair 8. To improve the efficiency, both rollers of the draw roller pair 12 could be connected to the cooling device 14.
Anschliessend an das letzte Streckrollenpaar 12 wird der Faden 6 über eine Verwirbe- lung 15 einer Spuleinrichtung 16 zugeführt und von dieser mit einer Geschwindigkeit V3 aufgespult. Die Geschwindigkeit V3 des Fadens 6 an der Spuleinrichtung 16wird dabei bestimmt durch die Geschwindigkeit V1 der Filamentsränge 4 unmittelbar nach der Spinndüse 2 und die gesamte Verstreckung der Filamentstränge 4 respektive des Fadens 6 auf ihrem Weg von der Spinndüse 2 über den Blasschacht 3 und die Streckzone zur Spuleinrichtung 16. Subsequent to the last pair of stretching rollers 12, the yarn 6 is fed to a winding device 16 via a swirling device 15 and wound up by it at a speed V3. The speed V3 of the thread 6 on the winding device 16 is determined by the speed V1 of the filament strand 4 immediately after the spinneret 2 and the entire drawing of the filament strands 4 and the thread 6 on their way from the spinneret 2 via the blowing shaft 3 and the draw zone Winding device 16.
Legende Legend
1 Spinnvorrichtung  1 spinning device
2 Spinndüse  2 spinneret
3 Blasschacht  3 blower shaft
4 Filamentstränge  4 filament strands
5 Spinnpräparation  5 spin finish
6 Faden  6 threads
7 Einlaufrollenpaar  7 inlet roller pair
8 Erstes Streckrollenpaar  8 First stretch roller pair
9 Zweites Streckrollenpaar  9 second pair of draw rolls
10 Drittes Streckrollenpaar  10 Third pair of draw rolls
1 1 Viertes Streckrollenpaar  1 1 Fourth pair of draw rolls
12 Fünftes Streckrollenpaar  12 fifth pair of draw rolls
13 Kühlmittelverbindung  13 coolant connection
14 Kühleinrichtung  14 cooling device
15 Verwirbelung  15 turbulence
16 Spuleinrichtung  16 winding device
V1 Geschwindigkeit Filamentstrang nach Spinndüse  V1 speed filament strand after spinneret
V2 Geschwindigkeit Faden Einlaufrollenpaar  V2 speed thread inlet roller pair
V3 Geschwindigkeit Faden Spuleinrichtung  V3 speed thread winding device

Claims

Patentansprüche claims
1. Vorrichtung zur Herstellung eines HMLS Garnes aus einer Polyesterschmelze 1. Apparatus for producing an HMLS yarn from a polyester melt
(PET) mit einer Spinneinrichtung (1) mit einer Spinndüse (2) zum Extrudieren und einem Blasschacht (3) zum Abkühlen einer Vielzahl von Filamentsträngen (4), mit einer Vorrichtung (5) zum Aufbringen einer Spinnpräparation und zum Zusammenfassen der Filamentstränge (4) zu einem Faden (6), mit einer Spuleinrichtung (16) und mit einer zwischen der Spinneinrichtung (1) und der Spuleinrichtung (16) vorgesehenen Streckzone zur Verstreckung des Fadens (6), dadurch gekennzeichnet, dass die Streckzone durch ein Einlaufrollenpaar (7) und vier bis sechs aufeinanderfolgende Streckrollenpaare (8, 9, 10, 11 , 12) gebildet ist und die ersteren Streckrollenpaare (8, 9, 0, ) mit einer Heizeinrichtung und das letzte Streckrollenpaar (12) mit einer Kühleinrichtung (14) versehen sind, wobei zumindest eine der beiden Rollen eines jeweiligen Streckrollenpaares (8, 9, 10, 11 , 12) mit der Heiz- oder Kühleinrichtung (14) versehen ist und dass die Geschwindigkeit (V2) mit welcher der Faden (6) durch das Einlaufrollenpaar (7) von der Spinneinrichtung (1) abgezogen wird 400 m/Min bis 600 m/Min beträgt.  (PET) with a spinning device (1) having a spinneret (2) for extruding and a blowing shaft (3) for cooling a plurality of filament strands (4), with a device (5) for applying a spin finish and for collecting the filament strands (4 ) to a thread (6), with a winding device (16) and with a stretching zone provided between the spinning device (1) and the winding device (16) for drawing the thread (6), characterized in that the drawing zone is formed by an inlet roller pair (7 ) and four to six successive draw roller pairs (8, 9, 10, 11, 12) is formed and the former stretch roller pairs (8, 9, 0,) are provided with a heater and the last stretch roller pair (12) with a cooling device (14) , Wherein at least one of the two rollers of a respective pair of stretching rollers (8, 9, 10, 11, 12) is provided with the heating or cooling device (14) and that the speed (V2) with which the thread (6) through the Entry roller pair (7) is withdrawn from the spinning device (1) is 400 m / min to 600 m / min.
2. Vorrichtung nach Anspruch 1 , dadurch gekennzeichnet, dass die Geschwindigkeit (V2) mit welcher der Faden (6) durch das Einlaufrollenpaar (7) von der Spinneinrichtung (1) abgezogen 475 m/Min beträgt. 2. Apparatus according to claim 1, characterized in that the speed (V2) with which the thread (6) through the inlet roller pair (7) subtracted from the spinning device (1) 475 m / min.
3. Vorrichtung nach Anspruch 1 oder 2, dadurch gekennzeichnet, dass die Streckzone durch ein Einlaufrollenpaar (7) und fünf aufeinanderfolgende Streckrollenpaare (8, 9, 10, 11 , 12) gebildet ist. 3. Apparatus according to claim 1 or 2, characterized in that the draw zone by a pair of inlet rollers (7) and five successive pairs of draw rollers (8, 9, 10, 11, 12) is formed.
4. Vorrichtung nach Anspruch 3, dadurch gekennzeichnet, dass eine Beheizung über die Heizeinrichtungen der ersten vier Streckrollenpaare (8, 9, 10, 11) derart vorgesehen ist, dass die Oberflächentemperatur der Rollen des ersten Streckrollenpaa- res (8) 40 bis 90°C, des zweiten Streckrollenpaares (9) 80 bis 70 °C, des dritten Streckrollenpaares (10) 120 bis 280°C und des vierten Streckrollenpaares (11) 120 bis 250°C betragen. 4. The device according to claim 3, characterized in that a heating via the heaters of the first four pairs of stretch rollers (8, 9, 10, 11) is provided such that the surface temperature of the rollers of the first stretch roller pair (8) 40 to 90 ° C, of the second pair of draw rollers (9) 80 to 70 ° C, the third pair of draw rollers (10) 120 to 280 ° C and the fourth pair of draw rollers (11) 120 to 250 ° C.
5. Vorrichtung nach Anspruch 3 oder 4, dadurch gekennzeichnet, dass die Verstre- ckung zwischen dem Einlaufrollenpaar (7) und dem ersten Streckrollenpaar (8) 1.02 bis 1.1 , zwischen dem ersten Streckrollenpaar (8) und dem zweiten Streckrollenpaar (9) 4 bis 6, zwischen dem zweiten Streckrollenpaar (9) und dem dritten Streckrollenpaar (10) 1.2 bis 2.0, zwischen dem dritten Streckrollenpaar (10) und dem vierten Streckrollenpaar (11) 0.7 bis 1.2 und zwischen dem vierten Streckrollenpaar (11) und dem fünften Streckrollenpaar (12) 0.7 bis 1.2 beträgt. 5. Apparatus according to claim 3 or 4, characterized in that the Verstre- ckung between the inlet roller pair (7) and the first pair of stretching rollers (8) 1.02 to 1.1, between the first pair of stretching rollers (8) and the second pair of stretching rollers (9) 4 bis 6, between the second pair of draw rollers (9) and the third pair of draw rollers (10) 1.2 to 2.0, between the third pair of draw rollers (10) and the fourth pair of draw rollers (11) 0.7 to 1.2 and between the fourth pair of draw rollers (11) and the fifth pair of draw rollers ( 12) is 0.7 to 1.2.
6. Vorrichtung nach einem der vorangehenden Ansprüche, dadurch gekennzeichnet, dass eine Geschwindigkeit (V1) der Filamentstränge (3) an der Spinndüse 5 bis 15 m/Min und die Geschwindigkeit (V2) des Fadens (6) am Einlaufrollenpaar (7) der Streckzone 550 m/Min bis 650 m/Min beträgt. 6. Device according to one of the preceding claims, characterized in that a speed (V1) of the filament strands (3) at the spinneret 5 to 15 m / min and the speed (V2) of the thread (6) at the inlet roller pair (7) of the draw zone 550 m / min to 650 m / min.
7. Vorrichtung nach einem der vorangehenden Ansprüche, dadurch gekennzeichnet, dass eine Oberflächentemperatur der mit der Kühleinrichtung (14) versehenen Rolle des letzten Streckrollenpaares (12) von kleiner 100°C vorgesehen ist. 7. Device according to one of the preceding claims, characterized in that a surface temperature of the cooling device (14) provided with the role of the last stretch roller pair (12) of less than 100 ° C is provided.
8. Vorrichtung nach einem der vorangehenden Ansprüche, dadurch gekennzeichnet, dass beide Rollen des letzten Streckrollenpaares ( 2) mit der Kühleinrichtung (14) versehen sind. 8. Device according to one of the preceding claims, characterized in that both rollers of the last stretch roller pair (2) with the cooling device (14) are provided.
9. Vorrichtung nach einem der vorangehenden Ansprüche, dadurch gekennzeichnet, dass die Kühleinrichtung (14) eine Flüssigkeitskühlung ist. 9. Device according to one of the preceding claims, characterized in that the cooling device (14) is a liquid cooling.
10. Vorrichtung nach einem der vorangehenden Ansprüche, dadurch gekennzeichnet, dass in der Streckzone eine 5- bis 7-fache Gesamtverstreckung vorgesehen ist. 10. Device according to one of the preceding claims, characterized in that in the draw zone, a 5- to 7-fold Gesamtverstreckung is provided.
11. Verfahren zur Herstellung eines HMLS Garnes aus einer Polyesterschmelze (PET), gekennzeichnet durch folgende Verfahrensschritte: 11. A process for producing an HMLS yarn from a polyester melt (PET), characterized by the following process steps:
a) Extrudieren von Filamentsträngen (4) aus einer Polyesterschmelze in einer Spinnvorrichtung (1) durch eine Spinndüse (2) mit einer Geschwindigkeit (V1) von 5 bis 15 m/Min a) extruding filament strands (4) from a polyester melt in a spinning device (1) through a spinneret (2) at a speed (V1) of 5 up to 15 m / min
b) Abkühlen der Filamentstränge (4) in einem Blasschacht (3) und zusammenfassen der Filamentstränge (4) zu einem Faden (6)  b) cooling the filament strands (4) in a blowing shaft (3) and combining the filament strands (4) into a thread (6)
c) Aufbringen einer Spinnpräparation  c) applying a spin finish
d) Abziehen des Fadens (6) aus dem Blasschacht (3) mit einem Einlaufrollenpaar (7) mit einer Geschwindigkeit (V2) von 500 m/Min bis 800 m/Min  d) withdrawing the thread (6) from the blowing shaft (3) with a pair of inlet rollers (7) at a speed (V2) of 500 m / min to 800 m / min
e) Verstrecken des Fadens (6) mit einer Gesamtverstreckung des Garns von 3 bis 8 über das Einlaufrollenpaar (7) und vier bis sechs aufeinanderfolgende Streckrollenpaare (8, 9, 10, 11 , 12), wobei die ersten Streckrollenpaare (8, 9, 10, 11) beheizt und das letzte Streckrollenpaar (12) gekühlt werden  e) drawing the yarn (6) with a total draw of the yarn from 3 to 8 via the inlet roller pair (7) and four to six successive draw roller pairs (8, 9, 10, 11, 12), wherein the first pair of draw rollers (8, 9, 10, 11) heated and the last stretch roller pair (12) are cooled
f) Aufspulen des Fadens (6) mit einer Spuleinrichtung (16).  f) winding the thread (6) with a winding device (16).
12. Verfahren nach Anspruch 11 , dadurch gekennzeichnet, dass die Filamentstränge (4) zwischen der Spinndüse (2) und dem Einlaufrollenpaar (7) um das 50- bis 80- fache verstreckt werden. 12. The method according to claim 11, characterized in that the filament strands (4) between the spinneret (2) and the inlet roller pair (7) are stretched by 50 to 80 times.
13. Verfahren nach Anspruch 11 , dadurch gekennzeichnet, dass die Filamentstränge (4) zwischen der Spinndüse (1) und dem Einlaufrollenpaar (7) um das 60-fache verstreckt und mit einer Geschwindigkeit (V3) von 1 '500 bis 3'500 m/Min aufgespult werden. 13. The method according to claim 11, characterized in that the filament strands (4) between the spinneret (1) and the inlet roller pair (7) stretched by 60 times and at a speed (V3) of 1 '500 to 3'500 m Be wound up / min.
14. Verfahren nach einem der Ansprüche 11 bis 3, dadurch gekennzeichnet, dass die synthetische Polyesterschmelze eine Grenzviskosität kleiner 0.9 dl/gr aufweist. 14. The method according to any one of claims 11 to 3, characterized in that the synthetic polyester melt has an intrinsic viscosity less than 0.9 dl / gr.
15. Garn hergestellt nach dem Verfahren der Ansprüche 11 bis 14, dadurch gekennzeichnet, dass das Garn eine Schwindung von weniger als 4% ( 80°C, 5 Min) und eine Festigkeit von zumindest 70 cN/tex bei weniger als 13% Dehnung aufweist. 15. Yarn made according to the method of claims 11 to 14, characterized in that the yarn has a shrinkage of less than 4% (80 ° C, 5 min) and a strength of at least 70 cN / tex at less than 13% elongation ,
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CN103797165A (en) 2014-05-14
WO2013013332A1 (en) 2013-01-31
CN103797165B (en) 2017-02-15
JP2014523494A (en) 2014-09-11
CH705306A1 (en) 2013-01-31
CH705306B1 (en) 2015-06-30
JP5984929B2 (en) 2016-09-06
ES2954268T3 (en) 2023-11-21
EP2737114B1 (en) 2023-06-07

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