EP0400268B1 - Process and apparatus for the fabrication of non-textured yarn from thermoplastic filaments, especially polyester yarn - Google Patents

Process and apparatus for the fabrication of non-textured yarn from thermoplastic filaments, especially polyester yarn Download PDF

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Publication number
EP0400268B1
EP0400268B1 EP90102864A EP90102864A EP0400268B1 EP 0400268 B1 EP0400268 B1 EP 0400268B1 EP 90102864 A EP90102864 A EP 90102864A EP 90102864 A EP90102864 A EP 90102864A EP 0400268 B1 EP0400268 B1 EP 0400268B1
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Prior art keywords
yarn
pull
polyester
synthetic
cold
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EP90102864A
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German (de)
French (fr)
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EP0400268A2 (en
EP0400268A3 (en
Inventor
Ingo Eifländer
Iwan Winata
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JOHN BROWN DEUTSCHE ENGINGEERING GMBH
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John Brown Deutsche Engineering GmbH
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Priority to AT90102864T priority Critical patent/ATE98306T1/en
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    • 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
    • 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

Definitions

  • the invention relates to a method for producing smooth yarn from thermoplastic synthetic threads, in particular smooth polyester yarn, according to which the plastic yarn is fed to a take-off unit by means of a delivery unit, stretched between the delivery unit and take-off unit, heat-set and finally wound up.
  • Smooth yarns made of thermoplastic synthetic threads and especially polyester threads are spun from a plurality of filaments. These filaments are combined into a bundle of threads, prepared and wound up at high speed.
  • the flat yarn to be produced obtains its usage properties by stretching.
  • the plain yarn is usually fed to a second heated supply unit via a first supply unit and pre-drawn to a ratio of less than 1.1: 1.
  • the flat yarn is heated on the second heated feed unit, for polyester to about 85 ° C. From the second feed unit, the flat yarn is fed to a take-off unit via a heating plate, finally stretched and then wound up.
  • the smooth yarn is heat-set on the heating plate, namely the fixation of a boil-off shrink or a hot air shrink with a surface temperature between 130 ° C. and 170 ° C.
  • This multi-stage process is relatively complex, also in terms of the device.
  • EP-A 0 224 306 also discloses a process for spinning stretching polyester threads with a given viscosity, wherein the polyester threads are drawn between a delivery godet with at least one separating roller at a predetermined thread speed and a draw-off godet with separating roller at a predetermined end speed via a stretching pin and thereby stretched and then wound up. To stretch them, the polyester threads are guided around an unheated stretching pin with a wrap angle of less than 360 °.
  • the stretched polyester threads are then heat-set, and the heat-setting can also be carried out on the draw-off godet at temperatures between 110 ° C and 240 ° C. Stretching and heat setting take place here - as in the known multi-stage processes - practically in separate process steps one after the other.
  • the invention is based on the object of specifying a simple and inexpensive method for producing smooth yarn from thermoplastic synthetic threads, in particular of smooth polyester yarn, and to provide a device which is suitable for carrying out this method.
  • the plastic yarn is preferably at take-off speeds from 300 m / min to 1600 m / min, preferably from 600 m / min to 1000 m / min cold drawn, at room temperature. Furthermore, the invention provides that the plastic yarn is heat-set between 2% and 40% at a surface temperature of the draw-off unit between 90 ° C and 250 ° C depending on a boil-off shrinkage or hot air shrinkage to be achieved.
  • a polyester yarn is used as the plastic yarn, which is drawn from a bundle of undrawn oriented threads and in front of a spinneret with a pull-off speed of at least 2500 m / min, preferably from a polyester POY ( Partially Oriented Yarn) with a titer of 40 dtex to 600 dtex.
  • Its undrawn polyester yarn is expediently cold drawn with a birefringence of at least 0.023 and an elongation at break between 55% and 180%.
  • the invention also includes the production of only a smooth, cold-drawn filament thread made of polyester or polyester POY.
  • the invention further relates to a device which is particularly suitable for carrying out the claimed method and is distinguished by a simple and functional design.
  • this device has an unwinding spool, a supply unit, a take-off unit and a take-up spool.
  • the take-off mechanism can be heated or has a heatable surface for heat setting the plastic or polyester yarn, the heating temperature being adjustable.
  • the take-off unit can have a separating roller for the plastic or polyester yarn wrapping around the take-off mechanism can be assigned in order to simultaneously subject the plastic or polyester yarn to a temperature treatment by means of cold drawing in order to adjust the cooking shrinkage or the hot air shrinkage.
  • polyester-POY stands for a polyester thread with a titer of about 40 dtex to 6000 dtex, which was melt-spun at a speed of about 2500 m / min to 6000 m / min, preferably 2700 m / min to 4500 m / min.
  • the device has an unwinding spool 2, a delivery mechanism 3, a take-off mechanism 4 and a winding spool 5. Between the delivery unit 3 and the take-off unit 4, the polyester yarn 1 is cold drawn with a draft ratio greater than 1.1: 1.
  • the cold-drawn polyester yarn 1 is heat-set at the same time on the take-off unit 4.
  • the extractor 4 has a heatable surface.
  • the heating temperature is adjustable.
  • the take-off unit 4 is assigned a separating roller 6 for the polyester yarn 1 wrapping around the take-off unit 4.

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  • Engineering & Computer Science (AREA)
  • Textile 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)

Abstract

The process concerns the fabrication of a smooth polyester yarn whereby the polyester yarn is cold-drawn between a pair of feed rollers and a take-up unit in a draw ratio of from 1.15 : 1 to 2.3 : 1 and heat set on the take-up unit. This is a simple and inexpensive way of combining single-stage cold-drawing with simultaneous heat-setting.

Description

Die Erfindung betrifft ein Verfahren zum Herstellen von Glattgarn aus thermoplastischen Kunststoffäden, insbesondere von glattem Polyestergarn, wonach das Kunststoffgarn mittels eines Lieferwerkes einem Abzugswerk zugeführt, zwischen Lieferwerk und Abzugswerk verstreckt, thermofixiert und schließlich aufgewickelt wird.The invention relates to a method for producing smooth yarn from thermoplastic synthetic threads, in particular smooth polyester yarn, according to which the plastic yarn is fed to a take-off unit by means of a delivery unit, stretched between the delivery unit and take-off unit, heat-set and finally wound up.

Glattgarne aus thermoplastischen Kunststoffäden und insbesondere Polyesterfäden werden aus einer Mehrzahl von Filamenten ersponnen. Diese Filamente werden zu einem Fadenbündel zusammengefaßt, präpariert und unter hoher Geschwindigkeit aufgewickelt. Das herzustellende Glattgarn erhält seine Gebrauchseigenschaften durch Verstrecken. Beim Verstrecken wird das Glattgarn üblicherweise über ein erstes Lieferwerk einem zweiten beheizten Lieferwerk zugeführt und dabei auf ein Verhältnis kleiner 1.1 : 1 vorverstreckt. Auf dem zweiten beheizten Lieferwerk wird das Glattgarn aufgeheizt, bei Polyester auf etwa 85° C. Von dem zweiten Lieferwerk wird das Glattgarn über eine Heizplatte einem Abzugswerk zugeführt, dabei endverstreckt und danach aufgewickelt. Auf der Heizplatte erfolgt die Thermofixierung des Glattgarnes, nämlich die Fixierung eines Abkochschrumpfes bzw. eines Heißluftschrumpfes mit einer Overflächentemperatur zwischen 130° C und 170° C. Dieses Mehrstufenverfahren ist verhältnismäßig aufwendig, auch in vorrichtungsmäßiger Hinsicht.Smooth yarns made of thermoplastic synthetic threads and especially polyester threads are spun from a plurality of filaments. These filaments are combined into a bundle of threads, prepared and wound up at high speed. The flat yarn to be produced obtains its usage properties by stretching. During drawing, the plain yarn is usually fed to a second heated supply unit via a first supply unit and pre-drawn to a ratio of less than 1.1: 1. The flat yarn is heated on the second heated feed unit, for polyester to about 85 ° C. From the second feed unit, the flat yarn is fed to a take-off unit via a heating plate, finally stretched and then wound up. The smooth yarn is heat-set on the heating plate, namely the fixation of a boil-off shrink or a hot air shrink with a surface temperature between 130 ° C. and 170 ° C. This multi-stage process is relatively complex, also in terms of the device.

Aus der EP-A 0 224 306 kennt man weiterhin ein Verfahren zum Spinnstrecken von Polyesterfäden mit einer vorgegebenen Viskosität, wobei die Polyesterfäden zwischen einer Liefergalette mit wenigstens einer Separierrolle mit einer vorgegebenen Fadengeschwindigkeit und einer Streckabzugsgalette mit Separierrolle mit einer vorgegebenen Endgeschwindigkeit über einen Streckstift abgezogen und dabei verstreckt und anschließend aufgespult werden. Die Polyesterfäden werden zu ihrer Verstreckung mit einem Umschlingungswinkel von weniger als 360° um einen ungeheizten Streckstift geführt.EP-A 0 224 306 also discloses a process for spinning stretching polyester threads with a given viscosity, wherein the polyester threads are drawn between a delivery godet with at least one separating roller at a predetermined thread speed and a draw-off godet with separating roller at a predetermined end speed via a stretching pin and thereby stretched and then wound up. To stretch them, the polyester threads are guided around an unheated stretching pin with a wrap angle of less than 360 °.

Die verstreckten Polyesterfäden werden anschließend thermofixiert, wobei die Thermofixierung auch auf der Streckabzugsgalette bei Temperaturen zwischen 110° C bis 240° C erfolgen kann. Verstrecken und Thermofixierung finden hier - wie bei den bekannten Mehrstufenverfahren - praktisch in getrennten Verfahrensschritten hintereinander statt.The stretched polyester threads are then heat-set, and the heat-setting can also be carried out on the draw-off godet at temperatures between 110 ° C and 240 ° C. Stretching and heat setting take place here - as in the known multi-stage processes - practically in separate process steps one after the other.

Der Erfindung liegt die Aufgabe zugrunde ein einfaches und kostengünstiges Verfahren zum Herstellen von Glattgarn aus thermoplastischen Kunststoffäden, insbesondere von glattem Polyestergarn, anzugeben und eine zur Durchführung dieses Verfahrens geeignete Vorrichtung zu schaffen.The invention is based on the object of specifying a simple and inexpensive method for producing smooth yarn from thermoplastic synthetic threads, in particular of smooth polyester yarn, and to provide a device which is suitable for carrying out this method.

Diese Aufgabe löst die Erfindung bei einem gattungsgemäßen Verfahren dadurch, daß das Kunststoffgarn zwischen dem Lieferwerk und dem Abzugswerk auf ein Verhältnis von 1.15 : 1 bis 2.3 : 1 kaltverstreckt und auf dem Abzugswerk thermofixiert wird. - Kaltverstrecken meint im Rahmen der Erfindung, daß ein Verstrecken des Glattgarnes auf seine Gebrauchseigenschaften bei einer Fadentemperatur im Bereich der Raumtemperatur erfolgt und das Streckverhältnis, d. h. das Geschwindigkeitsverhältnis zwischen Lieferwerk und Abzugswerk, so hoch gewählt ist, daß in dem verstreckten Glattgarn keine unverstreckten oder weniger hoch als das eingestellte Streckverhältnis verstreckten Stellen vorhanden sind. Dadurch können im kaltverstreckten Glattgarn Dehnungen zwischen 8 % und 50 % bei hoher Fadengleichmäßigkeit eingestellt werden, die z. B. an dem Uster% erkennbar ist. Gleichzeitig erfolgt die Temperaturbehandlung des Glattgarns unmittelbar auf dem Abzugswerk. Überraschenderweise werden die von Glattgarnen und insbesondere glattem Polyestergarn verlangten Gebrauchseigenschaften im Zuge der erfindungsgemäßen Behandlung nicht nur erreicht, sondern darüber hinaus verbessert.This object is achieved by the invention in a generic method in that the plastic yarn between the delivery unit and the take-off unit is cold drawn to a ratio of 1.15: 1 to 2.3: 1 and heat set on the take-off unit. - Cold stretching means in the context of the invention that stretching of the plain yarn to its performance properties takes place at a thread temperature in the region of room temperature and the stretching ratio, ie. H. the speed ratio between the delivery mechanism and the take-off mechanism is chosen so high that there are no undrawn or less stretched points in the drawn smooth yarn than the set draw ratio. As a result, elongations between 8% and 50% with high thread uniformity can be set in the cold-drawn smooth yarn. B. on the Uster% is recognizable. At the same time, the heat treatment of the plain yarn takes place directly on the take-off unit. Surprisingly, the performance properties required by smooth yarns and in particular smooth polyester yarn are not only achieved in the course of the treatment according to the invention, but also improved.

Weitere erfindungswesentliche Merkmale sind im folgenden aufgeführt. So wird das Kunststoffgarn vorzugsweise bei Abzugsgeschwindigkeiten von 300 m/min bis 1600 m/min, vorzugsweise von 600 m/min bis 1000 m/min kaltverstreckt, und zwar bei Raumtemperatur. Ferner sieht die Erfindung vor, daß das Kunststoffgarn bei einer Oberflächentemperatur des Abzugswerkes zwischen 90° C und 250° C in Abhängigkeit eines zu erzielenden Abkochschrumpfes bzw. Heißluftschrumpfes zwischen 2 % und 40 % thermofixiert wird. Nach einem Vorschlag der Erfindung mit selbständiger Bedeutung ist vorgesehen, daß als Kunststoffgarn ein Polyestergarn verwendet wird, welches aus einem Fadenbündel von unverstreckten orientierten Fäden und vor einer Spinndüse mit einer Abzugsgeschwindigkeit von mindestens 2500 m/min abgezogenen Polyesterfäden, vorzugsweise aus einem Polyester-POY (Partial Oriented Yarn) mit einem Titer von 40 dtex bis 600 dtex besteht. Zweckmäßigerweise wird sein unverstrecktes Polyestergarn mit einer Doppelbrechung von mindestens 0.023 und einer Bruchdehnung zwischen 55 % und 180 % kaltverstreckt. - Unter die Erfindung fällt auch die Herstellung lediglich eines glatten, kaltverstreckten Filamentenfadens aus Polyester bzw. Polyester-POY.Further features essential to the invention are listed below. So the plastic yarn is preferably at take-off speeds from 300 m / min to 1600 m / min, preferably from 600 m / min to 1000 m / min cold drawn, at room temperature. Furthermore, the invention provides that the plastic yarn is heat-set between 2% and 40% at a surface temperature of the draw-off unit between 90 ° C and 250 ° C depending on a boil-off shrinkage or hot air shrinkage to be achieved. According to a proposal of the invention with independent importance, it is provided that a polyester yarn is used as the plastic yarn, which is drawn from a bundle of undrawn oriented threads and in front of a spinneret with a pull-off speed of at least 2500 m / min, preferably from a polyester POY ( Partially Oriented Yarn) with a titer of 40 dtex to 600 dtex. Its undrawn polyester yarn is expediently cold drawn with a birefringence of at least 0.023 and an elongation at break between 55% and 180%. - The invention also includes the production of only a smooth, cold-drawn filament thread made of polyester or polyester POY.

Gegenstand der Erfindung ist ferner eine Vorrichtung, die zur Durchführung des beanspruchten Verfahrens besonders geeignet ist und sich durch einfachen und funktionsgerechten Aufbau auszeichnet. Diese Vorrichtung weist in ihrem grundsätzlichen Aufbau eine Abwickelspule, ein Lieferwerk, ein Abzugswerk und eine Aufwickelspule auf. Das Abzugswerk ist beheizbar bzw. besitzt eine beheizbare Oberfläche zum Thermofixieren des Kunststoff- bzw. Polyestergarnes, wobei die Heiztemperatur einstellbar ist. Dem Abzugswerk kann eine Separierrolle für das das Abzugswerk umschlingende Kunststoff- bzw. Polyestergarn zugeordnet sein, um das Kunststoff- bzw. Polyestergarn im Wege des Kaltverstreckens gleichzeitig einer Temperaturbehandlung zwecks Einstellung des Kochschrumpfes bzw. des Heißluftschrumpfes zu unterziehen. Tatsächlich gelingt im Rahmen des erfindungsgemäßen Verfahrens und mit der erfindungsgemäßen Vorrichtung ein einstufiges Kaltverstrecken mit simultaner Thermofixierung von Kunststoffgarnen bzw. Polyestergarn. Folglich steht ein einfaches und kostengünstiges Verfahren zum Herstellen von Glattgarnen bzw. glattem Polyestergarn zur Verfügung, welches in anlagentechnischer Hinsicht wenig aufwendig und besonders funktionssicher ist.The invention further relates to a device which is particularly suitable for carrying out the claimed method and is distinguished by a simple and functional design. In its basic structure, this device has an unwinding spool, a supply unit, a take-off unit and a take-up spool. The take-off mechanism can be heated or has a heatable surface for heat setting the plastic or polyester yarn, the heating temperature being adjustable. The take-off unit can have a separating roller for the plastic or polyester yarn wrapping around the take-off mechanism can be assigned in order to simultaneously subject the plastic or polyester yarn to a temperature treatment by means of cold drawing in order to adjust the cooking shrinkage or the hot air shrinkage. In fact, within the scope of the method according to the invention and with the device according to the invention, one-stage cold drawing with simultaneous heat setting of plastic yarns or polyester yarn is possible. Consequently, a simple and inexpensive method for producing smooth yarns or smooth polyester yarn is available, which is not complex in terms of plant technology and is particularly reliable.

Im folgenden wird die Erfindung anhand einer lediglich ein Ausführungsbeispiel darstellenden Zeichnung näher erläutert. Die einzige Figur zeigt eine Vorrichtung zum Herstellen von glattem Polyestergarn 1 aus Polyester-POY. Polyester-POY steht für einen Polyesterfaden mit einem Titer von etwa 40 dtex bis 6000 dtex, welcher mit einer Geschwindigkeit von etwa 2500 m/min bis 6000 m/min, bevorzugt 2700 m/min bis 4500m/min, schmelzgesponnen wurde. Die Vorrichtung weist eine Abwickelspule 2, ein Lieferwerk 3, ein Abzugswerk 4 und eine Aufwickelspule 5 auf. Zwischen dem Lieferwerk 3 und dem Abzugswerk 4 wird das Polyestergarn 1 mit einem Verzugsverhältnis größer 1.1 : 1 kaltverstreckt. Auf dem Abzugswerk 4 wird das kaltverstreckte Polyestergarn 1 gleichzeitig thermofixiert. Dazu weist das Abzugswerk 4 eine beheizbare Oberfläche auf. Die Heiztemperatur ist einstellbar. Durch gleichzeitige Temperaturbehandlung des Polyestergarnes 1 auf dem Abzugswerk 4 kann del Kochschrumpf bzw. der Heißluftschrumpf zwischen 2 % bis 40 % je nach gewählter Oberflächentemperatur des Abzugswerkes 4, die zwischen 90° C bis 250° C liegen kann, gestellt werdenThe invention is explained in more detail below with reference to a drawing which represents only one exemplary embodiment. The single figure shows a device for producing smooth polyester yarn 1 from polyester POY. Polyester-POY stands for a polyester thread with a titer of about 40 dtex to 6000 dtex, which was melt-spun at a speed of about 2500 m / min to 6000 m / min, preferably 2700 m / min to 4500 m / min. The device has an unwinding spool 2, a delivery mechanism 3, a take-off mechanism 4 and a winding spool 5. Between the delivery unit 3 and the take-off unit 4, the polyester yarn 1 is cold drawn with a draft ratio greater than 1.1: 1. The cold-drawn polyester yarn 1 is heat-set at the same time on the take-off unit 4. For this purpose, the extractor 4 has a heatable surface. The heating temperature is adjustable. By simultaneous heat treatment of the polyester yarn 1 on the take-off 4 del cooking shrinkage or the hot air shrinkage between 2% to 40% depending on the selected surface temperature of the extraction unit 4, which can be between 90 ° C to 250 ° C

Dem Abzugswerk 4 ist eine Separierrolle 6 für das das Abzugswerk 4 umschlingende Polyestergarn 1 zugeordnet.The take-off unit 4 is assigned a separating roller 6 for the polyester yarn 1 wrapping around the take-off unit 4.

Im folgenden werden die Gebrauchseigenschaften von erfindungsgemäß behandeltem Glattgarn anhand verschiedener Beispiele tabellarisch dargestellt: 1. POY, 2800 m/min Spinnabzug TITER dtex 154.9 BRUCHLAST cN 324 CV-BRUCHLAST % 2.19 BRUCHDEHNUNG % 163.30 CV-BRUCHDEHNUNG % 2.34 USTER N % 0.70 HI % 0.40 1.1 Kaltverstreckung VV 1:2.005 Temp. Galette 170° C TITER dtex 79.05 BRUCHLAST cN 343.5 CV-BRUCHLAST % 1.64 BRUCHDEHNUNG % 27.89 CV-BRUCHDEHNUNG % 5.67 Festigkeit cN/dtex 4.32 USTER N % 1.07 HI % 0.40 ANFÄRBUNG 4.0 2. POY, 3200 m/min Spinnabzug TITER dtex 139.8 BRUCHLAST cN 326 CV-BRUCHLAST % 3.36 BRUCHDEHNUNG % 128.84 CV-BRUCHDEHNUNG % 2.85 USTER N % 0.83 HI % 0.44 2.1 Kaltverstreckung VV 1:1.772 Temp. Galette 170° C TITER dtex 80.4 BRUCHLAST cN 353.5 CV-BRUCHLAST % 1.80 BRUCHDEHNUNG % 26.30 CV-BRUCHDEHNUNG % 7.28 FESTIGKEIT cN/dtex 4.39 USTER N % 0.63 HI % 0.36 KOCHSCHRUMPF % 5.65 ANFÄRBUNG 4.0 3. POY, 4300 m/min Spinnabzug TITER dtex 118.4 BRUCHLAST cN 343 CV-BRUCHLAST % 3.25 BRUCHDEHNUNG % 87.53 CV-BRUCHDEHNUNG % 4.17 USTER N % 0.79 HI % 0.60 3.1 Kaltverstreckung VV 1:1.504 Temp. Galette 170° C TITER dtex 82.4 BRUCHLAST cN 340.5 CV-BRUCHLAST % 1.94 BRUCHDEHNUNG % 27.17 CV-BRUCHDEHNUNG % 6.10 FESTIGKEIT cN/dtex 4.12 USTER N % 0.60 HI % 0.41 ANFÄRBUNG 4.0 In the following, the usage properties of smooth yarn treated according to the invention are shown in a table using various examples: 1st POY, 2800 m / min spinning take-off TITER dtex 154.9 BREAKING LOAD cN 324 CV BREAKING LOAD % 2.19 ELASTICATION % 163.30 CV BREAKAGE % 2.34 USTER N % 0.70 HI % 0.40 1.1 Cold drawing VV 1: 2.005 Temp. Godet 170 ° C TITER dtex 79.05 BREAKING LOAD cN 343.5 CV BREAKING LOAD % 1.64 ELASTICATION % 27.89 CV BREAKAGE % 5.67 Strength cN / dtex 4.32 USTER N % 1.07 HI % 0.40 COLORING 4.0 2nd POY, 3200 m / min spinning take-off TITER dtex 139.8 BREAKING LOAD cN 326 CV BREAKING LOAD % 3.36 ELASTICATION % 128.84 CV BREAKAGE % 2.85 USTER N % 0.83 HI % 0.44 2.1 Cold drawing VV 1: 1,772 Temp. Godet 170 ° C TITER dtex 80.4 BREAKING LOAD cN 353.5 CV BREAKING LOAD % 1.80 ELASTICATION % 26.30 CV BREAKAGE % 7.28 STRENGTH cN / dtex 4.39 USTER N % 0.63 HI % 0.36 COOKING SHRINK % 5.65 COLORING 4.0 3rd POY, 4300 m / min spinning take-off TITER dtex 118.4 BREAKING LOAD cN 343 CV BREAKING LOAD % 3.25 ELASTICATION % 87.53 CV BREAKAGE % 4.17 USTER N % 0.79 HI % 0.60 3.1 Cold drawing VV 1: 1,504 Temp. Godet 170 ° C TITER dtex 82.4 BREAKING LOAD cN 340.5 CV BREAKING LOAD % 1.94 ELASTICATION % 27.17 CV BREAKAGE % 6.10 STRENGTH cN / dtex 4.12 USTER N % 0.60 HI % 0.41 COLORING 4.0

Dabei bedeuten die Abkürzungen im einzelnen:

VV =
Maschinenstreckverhältnis
CV =
Coefficient of variance
N =
Normaltest und
HI =
halb inert, halb träge.
The abbreviations mean:
VV =
Machine stretch ratio
CV =
Coefficient of variance
N =
Normal test and
HI =
half inert, half sluggish.

Claims (8)

  1. A process for manufacturing smooth yarn from thermoplastic synthetic fibres, particularly smooth polyester yarn, wherein the synthetic yarn (1) is supplied to a pull-off device (4) by means of a delivery device (3), stretched between the delivery device (3) and the pull-off device (4), thermo-fixed and finally taken up, characterised in that the synthetic yarn (1) is cold-stretched between the delivery device (3) and the pull-off device (4) at a drawing ratio of 1.15 : 1 to 2.3 : 1 and is thermo-fixed on the pull-off device.
  2. A process according to claim 1, claim the synthetic yarn (1) is cold-stretched at pull-off speeds from 300 m/minute to 1600 m/minute, preferably from 600 m/minute to 1000 m/minute.
  3. A process according to claim 1 or 2, characterised in that the synthetic yarn (1) is cold-stretched at room temperature.
  4. A process according to any one of claims 1 to 3, characterised in that the synthetic yarn (1) is thermo-fixed at a surface temperature of the pull-off device (4) between 90°C and 250°C, depending on a scalding shrinkage or hot-air shrinkage of between 2 % and 40 % which is to be achieved.
  5. A process according to any one of claims 1 to 4, characterised in that a polyester yarn is used as the synthetic yarn (1), which polyester yarn consists of a fibre bundle of unstretched, oriented fibres and polyester fibres pulled off from a spinneret at a pull-off speed of at least 2500 m/minute, and preferably consists of a polyester POY with a titre from 40 dtex to 6000 dtex.
  6. A process according to any one of claims 1 to 5, characterised in that an unstretched polyester yarn with a birefringence of at least 0.023 and a breaking elongation between 55 % and 180 % is cold-stretched.
  7. An apparatus for carrying out the process according to any one of claims 1 to 6, with a supply reel (2), a delivery device (3), a pull-off device (4) and a take-up reel (5), characterised in that the pull-off device (4) has a heated surface for thermo-fixing the synthetic- or polyester yarn (1) and the heating temperature is adjustable.
  8. An apparatus according to claim 7, characterised in that a separating roll (6) for the synthetic- or polyester yarn (1) passing round the pull-off device is associated with the pull-off device (4).
EP90102864A 1989-05-27 1990-02-14 Process and apparatus for the fabrication of non-textured yarn from thermoplastic filaments, especially polyester yarn Revoked EP0400268B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT90102864T ATE98306T1 (en) 1989-05-27 1990-02-14 METHOD AND DEVICE FOR THE MANUFACTURE OF FLAT YARN FROM THERMOPLASTIC PLASTIC FIADES, ESPECIALLY POLYESTER FLAT YARN.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3917338A DE3917338A1 (en) 1989-05-27 1989-05-27 METHOD AND DEVICE FOR PRODUCING SMOOTH YARN FROM THERMOPLASTIC ARTIFASTS, PARTICULARLY SMOOTH POLYESTER YARN
DE3917338 1989-05-27

Publications (3)

Publication Number Publication Date
EP0400268A2 EP0400268A2 (en) 1990-12-05
EP0400268A3 EP0400268A3 (en) 1991-03-27
EP0400268B1 true EP0400268B1 (en) 1993-12-08

Family

ID=6381543

Family Applications (1)

Application Number Title Priority Date Filing Date
EP90102864A Revoked EP0400268B1 (en) 1989-05-27 1990-02-14 Process and apparatus for the fabrication of non-textured yarn from thermoplastic filaments, especially polyester yarn

Country Status (3)

Country Link
EP (1) EP0400268B1 (en)
AT (1) ATE98306T1 (en)
DE (2) DE3917338A1 (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0613505A1 (en) * 1991-11-18 1994-09-07 E.I. Du Pont De Nemours And Company Improvements in polyester filaments, yarns and tows
DE4215015A1 (en) * 1992-05-12 1993-11-18 Amann & Soehne Stretching process

Family Cites Families (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NL177169C (en) * 1952-03-26 Nederlanden Staat DEVICE FOR DETERMINING THE PRESENCE OF ONE OR MORE OF A NUMBER OF FREQUENCIES IN PULSE CODE MODULATED SIGNALS.
CH473250A (en) * 1968-10-24 1969-05-31 Rieter Ag Maschf Suction device for stretch rolls
NL7202314A (en) * 1971-03-19 1972-09-21
GB1410325A (en) * 1971-09-22 1975-10-15 Heathcoat & Co Ltd Process and apparatus for production of elastomeric filaments
JPS5947726B2 (en) * 1977-05-16 1984-11-21 帝人株式会社 Polyester fiber manufacturing method
AR226929A1 (en) * 1980-11-24 1982-08-31 Inventa Ag A SINGLE STAGE MANUFACTURING PROCEDURE OF FULLY STRETCHED TEXTILE MULTIFILAMENTS
DE3675343D1 (en) * 1985-11-25 1990-12-06 Schweizerische Viscose METHOD AND DEVICE FOR SPINNING DIVIDING POLYESTER FEEDS.
EP0282660B1 (en) * 1987-03-17 1991-06-05 Unitika Ltd. Polyester fiber and process for producing the same
DE3871523D1 (en) * 1987-10-13 1992-07-02 Schweizerische Viscose METHOD FOR PRODUCING A SMOOTH POLYESTER THREAD, AND POLYESTER THREAD PRODUCED BY THE PROCESS.
US4906519A (en) * 1988-06-06 1990-03-06 Basf Corporation Variable denier filaments and method of producing same

Also Published As

Publication number Publication date
ATE98306T1 (en) 1993-12-15
EP0400268A2 (en) 1990-12-05
DE59003757D1 (en) 1994-01-20
DE3917338C2 (en) 1993-06-17
EP0400268A3 (en) 1991-03-27
DE3917338A1 (en) 1990-11-29

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