EP0466868B1 - Process for the high-speed spinning of monofilaments, and monofilaments thus manufactured - Google Patents

Process for the high-speed spinning of monofilaments, and monofilaments thus manufactured Download PDF

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Publication number
EP0466868B1
EP0466868B1 EP91903030A EP91903030A EP0466868B1 EP 0466868 B1 EP0466868 B1 EP 0466868B1 EP 91903030 A EP91903030 A EP 91903030A EP 91903030 A EP91903030 A EP 91903030A EP 0466868 B1 EP0466868 B1 EP 0466868B1
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EP
European Patent Office
Prior art keywords
monofilaments
friction element
friction
monofilament
dtex
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EP91903030A
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German (de)
French (fr)
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EP0466868A1 (en
Inventor
Klaus Fischer
Halim Baris
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ExNex AG
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Rhone Poulenc Viscosuisse SA
Societe de la Viscose Suisse SA
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    • 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
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T428/00—Stock material or miscellaneous articles
    • Y10T428/29—Coated or structually defined flake, particle, cell, strand, strand portion, rod, filament, macroscopic fiber or mass thereof
    • Y10T428/2913—Rod, strand, filament or fiber
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T428/00—Stock material or miscellaneous articles
    • Y10T428/29—Coated or structually defined flake, particle, cell, strand, strand portion, rod, filament, macroscopic fiber or mass thereof
    • Y10T428/2913—Rod, strand, filament or fiber
    • Y10T428/298—Physical dimension

Definitions

  • the present invention relates to a process for the production of polyester monofilaments with a titer of 1 to 30 dtex and the monofilaments produced thereafter.
  • Fine monofilaments up to about 33 dtex are spun at spinning speeds of less than 1000 m / min, cooled with blown air, wound up and drawn separately in a second operation at about 750 m / min.
  • EP-A-0176937 describes a method for producing a smooth multifilament yarn, the filament bundle being combined into a thread, then wetted with liquid by means of a water nozzle and then stretched over a brake pin.
  • the multifilament plain yarn obtained in this way is intended as a roving for texturing or for the production of stretch yarn.
  • GB-A-712 799 describes a method and an apparatus for drawing polyamide yarns.
  • a further cylinder pair or pin pair is provided between a drafting system consisting of a delivery godet and a take-off godet, which is able to stabilize the thread tension during the stretching process via a spring system.
  • a drafting system consisting of a delivery godet and a take-off godet
  • Such a system is unsuitable for the rapid spinning of polyester monofilaments, if only because of its complex composition.
  • the object of the invention is to provide a process for the production of fine monofilaments which achieves and / or improves the properties of known monofilaments without a separate stretching process at high winding speeds.
  • Another object is to vary the method in such a way that desired properties of the monofilaments can be achieved by the setting parameters of the device.
  • the winding speed is 3000 to 6000 m / min., Preferably 4000 to 5000 m / min.
  • thermoplastics such as all kinds of polyesters, polyamides, especially those known as nylon 66 or nylon 6, and polyacrylic, polyvinylidene fluoride, made of polyethylene or polypropylene.
  • the device for carrying out the method essentially consists of a friction element which is arranged between the spinneret and the device for the preparation application.
  • the friction element is preferably fork-shaped formed, rotatable and movable in its distance from the spinneret.
  • the two opposite friction surfaces, an upper friction surface and a lower friction surface are arranged axially parallel.
  • a friction element which has been set and fixed once at a distance from the spinneret can be rotated about its axis continuously or in fixed steps in such a way that a desired tension can be provided on the thread lying between the friction surfaces.
  • the step-by-step adjustment has the advantage that the desired positions can be precisely re-adjusted at any time and a constant, reproducible thread tension is guaranteed.
  • the friction element can consist of several pins, which have a cylindrical but also oval surface. However, other bodies with curved surfaces can also be used.
  • a distance of the friction elements from the spinneret that is 20 to 280 cm, depending on the desired final titer of the monofilament.
  • the twist angle ⁇ between the thread path and the common axis of the friction element surfaces should be 0 to 40 degrees and the wrap angle of the friction element / monofilament should be 50 ° to 150 °.
  • the invention is to be illustrated schematically on the basis of a drawing.
  • FIG. 1 schematically describes a spinneret.
  • a friction element 3 is arranged between the spinneret 1 and a winder 7.
  • the height of the friction element 3, as indicated by arrows, is adjustable.
  • the friction element 3 consists of a friction surface 4 and a friction surface 5, which are arranged about an axis 8.
  • the friction element 3 is rotatable so that a monofilament 2 or a family of monofilaments which is passed between the friction surface 4 and the friction surface 5 and which is represented by the monofilaments 2 and 2 ′ delimiting the thread family can be subjected to a frictional force.
  • a device 6 for applying a spin finish is provided between the friction element 3 and the winder 7.
  • Fig. 2 the rotatability of the friction element is indicated by arrows.
  • Fig. 2a the monofilament 2 passes between the friction surface 4 and the friction surface 5.
  • FIG. 3 the height adjustment of the friction element 3 as a whole unit and that of the friction surface 5 compared to 4 is indicated by the double arrows.
  • Fig. 3a the thread passes between the frosted surface 4 and the friction surface 5.
  • Figure 3b is a side view of Figure 3a.
  • Fig. 4b is a side view of Fig. 4a.
  • a group of threads emerges from the spinneret 1, consisting of the monofilaments 2, 2 'delimiting the group, which run parallel through the friction element at high speed and are stretched over the friction surface 4 and the friction surface 5 by means of the winder 7.
  • a suitable spin preparation 6 is applied on the path between the friction element 3 and the winder 7. If necessary, a godet can also be arranged between the friction element and the winder.
  • the resulting monofilament is a finished product for further processing.
  • Polyester with a V.I. of 74 dl / g and a melt temperature of approx. 287 ° C is extruded through a spinneret 1 x 6 / 0.33 / 4D and drawn off at a speed of 5000 m / min and blowing air at 0.25 - 0.4 m / s chilled.
  • the distance between the spinneret and the friction element is 30-160 cm, depending on the titer.
  • a spinning preparation is applied to the thread at a distance of h + 40 cm.
  • the adjustment of the friction element (Fig. 2) was carried out in three different stages, 0 °, 20 ° and 40 °, measured against the thread running direction. The measurement results are shown in Table 1. (Winding speed 5000 m / min)

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Textile Engineering (AREA)
  • Spinning Methods And Devices For Manufacturing Artificial Fibers (AREA)
  • Prostheses (AREA)
  • Artificial Filaments (AREA)

Abstract

The process disclosed concerns the simultaneous high-speed spinning of several monofilaments each of 1-30 dtex. The monofilaments are cooled by an air blast, drawn away by a friction element and wound directly on to a spool. The device consists of a friction element (3) with parallel friction surfaces (4, 5). The height of the friction element (3) can be altered and the element may be designed so that it can rotate in order to adjust the friction between the friction element and a monofilament (2) or set of monofilaments. The monofilament produced in this way has a strength of 36-60 cN/tex, an elongation of 20-40 % and a shrinkage on boiling of 2-15 %.

Description

Die vorliegende Erfindung betrifft ein Verfahren zur Herstellung von Polyester Monofilamenten mit einem Titer von 1 bis 30 dtex und die danach hergestellten Monofilamente.The present invention relates to a process for the production of polyester monofilaments with a titer of 1 to 30 dtex and the monofilaments produced thereafter.

Das Abziehen von schmelzgesponnenen Multifilamenten über Bremsstifte, wobei durch Reibung Orientierung und Kristallisation beeinflusst werden, ist bekannt (CH-A-475 375). In der bekannten Vorrichtung ist zwischen unverstellbaren, feststehenden Bremsstiften ein nicht angetriebenes Rollenpaar zur Stabilisierung der konvergierten Multifilamente vorgesehen. Eine solche Vorrichtung ist zur Herstellung von Monofilen jedoch nicht geeignet.The drawing off of melt-spun multifilaments via brake pins, whereby orientation and crystallization are influenced by friction, is known (CH-A-475 375). In the known device, a non-driven pair of rollers is provided between non-adjustable, fixed brake pins for stabilizing the converged multifilaments. However, such a device is not suitable for the production of monofilaments.

Feine Monofilamente bis etwa 33 dtex werden mit Spinngeschwindigkeiten unter 1000 m/min gesponnen, mit Blasluft gekühlt, aufgewickelt und in einem zweiten Arbeitsgang mit etwa 750 m/min separat verstreckt.Fine monofilaments up to about 33 dtex are spun at spinning speeds of less than 1000 m / min, cooled with blown air, wound up and drawn separately in a second operation at about 750 m / min.

Obwohl die Eigenschaften der in bekannter Weise hergestellten Monofile, insbesondere ihre Festigkeit, befriedigend ist, ist das langsame Spinnen und separate Verstrecken sehr aufwendig. Es besteht schon lange das Bedürfnis, die Herstellung der Monofile zu vereinfachen und effizienter zu gestalten.Although the properties of the monofilaments produced in a known manner, in particular their strength, are satisfactory, the slow spinning and separate drawing are very complex. There has long been a need to simplify the manufacture of monofilaments and make them more efficient.

Die EP-A-0176937 beschreibt ein Verfahren zur Herstellung eines glatten Multifilamentgarns, wobei das Filamentbündel zu einem Faden zusammengefasst wird, anschliessend mittels einer Wasserdüse mit Flüssigkeit benetzt und darauf über einen Bremsstift verstreckt wird. Das auf diese Weise erhaltene multifile Glattgarn ist als Vorgarn zur Texturierung oder zur Herstellung von Streckzwirngarn vorgesehen.EP-A-0176937 describes a method for producing a smooth multifilament yarn, the filament bundle being combined into a thread, then wetted with liquid by means of a water nozzle and then stretched over a brake pin. The multifilament plain yarn obtained in this way is intended as a roving for texturing or for the production of stretch yarn.

Die GB-A-712 799 beschreibt ein Verfahren und eine Vorrichtung zum Verstrecken von Polyamidgarnen. Hierbei ist zwischen einem Streckwerk, bestehend aus einer Liefergalette und einer Abzugsgalette ein weiteres Zylinderpaar oder Stiftpaar vorgesehen, welches über ein Federsystem in der Lage ist die Fadenspannung beim Streckvorgang zu stabilisieren. Ein solches System ist schon allein wegen seiner komplexen Zusammensetzung zum Schnellspinnen von Polyester Monofilamenten ungeeignet.GB-A-712 799 describes a method and an apparatus for drawing polyamide yarns. Here, a further cylinder pair or pin pair is provided between a drafting system consisting of a delivery godet and a take-off godet, which is able to stabilize the thread tension during the stretching process via a spring system. Such a system is unsuitable for the rapid spinning of polyester monofilaments, if only because of its complex composition.

Aufgabe der Erfindung ist es, ein Verfahren, zur Herstellung von feinen Monofilamenten zur Verfügung zu stellen, das ohne separaten Streckprozess bei hohen Wickelgeschwindigkeiten die Eigenschaften von bekannten Monofilamenten erreicht und/oder verbessert.The object of the invention is to provide a process for the production of fine monofilaments which achieves and / or improves the properties of known monofilaments without a separate stretching process at high winding speeds.

Eine weitere Aufgabe ist es, das Verfahren so zu varieren, dass gewünschte Eigenschaften der Monofilamente durch die Einstellparameter der Vorrichtung erzielt werden können.Another object is to vary the method in such a way that desired properties of the monofilaments can be achieved by the setting parameters of the device.

Die vorgenannte Aufgabe wird erfindungsgemäss nach dem Kennzeichen von Anspruch 1 gelöst.According to the invention, the aforementioned object is achieved according to the characterizing part of claim 1.

Unmittelbar bedeutet, dass zwischen einer Spinndüse und einem Reibelement keine Berührung mit dem laufenden Faden stattfindet. Hier ist es erstmals überraschend gelungen, ein Monofilament mit einer sehr hohen Geschwindigkeit einstufig herzustellen.Immediately means that there is no contact with the running thread between a spinneret and a friction element. Here, for the first time, it was surprisingly possible to produce a monofilament at a very high speed in one step.

Die Aufspulgeschwindigkeit liegt bei 3000 bis 6000 m/min., bevorzugt 4000 bis 5000 m/min.The winding speed is 3000 to 6000 m / min., Preferably 4000 to 5000 m / min.

Das Verfahren ist anwendbar auf Thermoplaste wie Polyester aller Art, Polyamide, insbesondere solche die als Nylon 66 oder Nylon 6 bekannt sind, sowie Polyacryl, Polyvinylidenfluorid, aus Polyethylen oder Polypropylen.The method is applicable to thermoplastics such as all kinds of polyesters, polyamides, especially those known as nylon 66 or nylon 6, and polyacrylic, polyvinylidene fluoride, made of polyethylene or polypropylene.

Die Vorrichtung zur Durchführung des Verfahrens besteht im wesentlichen aus einem Reibelement, welches zwischen der Spinndüse und der Einrichtung zum Präparationsauftrag angeordnet ist. Das Reibelement ist bevorzugt gabelförmig ausgebildet, drehbar und in seinem Abstand zur Spinndüse bewegbar angeordnet.The device for carrying out the method essentially consists of a friction element which is arranged between the spinneret and the device for the preparation application. The friction element is preferably fork-shaped formed, rotatable and movable in its distance from the spinneret.

Bei einer gabelförmigen Ausbildung des Reibelementes sind die beiden gegenüberliegenden Reibflächen, eine obere Reibfläche und eine untere Reibfläche achsparallel angeordnet.In the case of a fork-shaped design of the friction element, the two opposite friction surfaces, an upper friction surface and a lower friction surface, are arranged axially parallel.

Ein einmal in der Entfernung zur Spinndüse eingestelltes und fixiertes Reibelement kann um seine Achse kontinuierlich oder in festen Stufen so verdreht werden, dass ein auf den zwischen den Reibflächen anliegender Faden mit einer gewünschten Spannung versehen werden kann. Die stufenweise Einstellung hat den Vorteil, dass die gewünschten Positionen jederzeit genau wiedereinstellbar sind und eine konstante, reproduzierbare Fadenspannung gewährleistet ist.A friction element which has been set and fixed once at a distance from the spinneret can be rotated about its axis continuously or in fixed steps in such a way that a desired tension can be provided on the thread lying between the friction surfaces. The step-by-step adjustment has the advantage that the desired positions can be precisely re-adjusted at any time and a constant, reproducible thread tension is guaranteed.

Das Reibelement kann aus mehreren Stiften, welche eine zylindrische aber auch ovale Oberfläche aufweisen, bestehen. Es können aber auch andere Körper mit gekrümmten Oberflächen verwendet werden.The friction element can consist of several pins, which have a cylindrical but also oval surface. However, other bodies with curved surfaces can also be used.

Es ist zweckmässig zum Erreichen der gewünschten Fadeneigenschaften einen Abstand der Reibelemente von der Spinndüse zu wählen, der 20 bis 280 cm beträgt, abhängig vom, erwünschten Endtiter des Monofilamentes.To achieve the desired thread properties, it is advisable to choose a distance of the friction elements from the spinneret that is 20 to 280 cm, depending on the desired final titer of the monofilament.

Der Verdrehwinkel α zwischen dem Fadenlauf und der geeinsamen Achse der Reibelementflächen soll 0 bis 40 Winkelgrade betragen und der Umschlingungswinkel Reibelement/Monofil 50° bis 150° betragen.The twist angle α between the thread path and the common axis of the friction element surfaces should be 0 to 40 degrees and the wrap angle of the friction element / monofilament should be 50 ° to 150 °.

Das nach dem Verfahren hergestellte Monofilament soll gleichzeitig die folgenden Bedingungen erfüllen.

  • a) eine Dehnung von 20 - 45 %
  • b) eine Festigkeit von 36 - 60 cN/tex
  • c) einen Kochschrumpf von 2 - 15 %
  • d) eine Unregelmässigkeit von < 1 % Uster
  • und e) einen gleichmässigen und runden Querschnitt aufweisen.
The monofilament produced by the process should also meet the following conditions.
  • a) an elongation of 20 - 45%
  • b) a strength of 36 - 60 cN / tex
  • c) a shrinkage of 2 - 15%
  • d) an irregularity of <1% Uster
  • and e) have a uniform and round cross section.

Die Erfindung soll anhand einer Zeichnung schematisch dargestellt werden.The invention is to be illustrated schematically on the basis of a drawing.

Es zeigen:

Fig. 1
Die erfindungsgemässe Anordnung der Reibelemente im Bereich eines Blasschachtes mit mehreren Monofilamenten.
Fig. 2
Das Reibelement in drehbarer Anordnung
Fig. 3
Das Reibelement mit variablem Abstand der Reibflächen
Fig. 4
Eine Variante des Reibelementes in einer seitlich verstellbaren Anordnung der Reibflächen
Show it:
Fig. 1
The arrangement of the friction elements according to the invention in the area of a blow shaft with several monofilaments.
Fig. 2
The friction element in a rotatable arrangement
Fig. 3
The friction element with variable spacing of the friction surfaces
Fig. 4
A variant of the friction element in a laterally adjustable arrangement of the friction surfaces

In Figur 1 ist mit 1 schematisch eine Spinndüse beschrieben. Zwischen der Spinndüse 1 und einem Spuler 7 ist ein Reibelement 3 angeordnet. Das Reibelement 3 ist, durch Pfeile angedeutet, in seiner Höhe verstellbar. Das Reibelement 3 besteht aus einer Reibfläche 4 und einer Reibfläche 5, welche um eine Achse 8 angeordnet sind. Das Reibelement 3 ist drehbar, so dass ein zwischen der Reibfläche 4 und der Reibfläche 5 hindurchgeführtes Monofilament 2 bzw. eine Schar von Monofilamenten, welche durch die die Fadenschar begrenzenden Monofilamente 2 und 2' dargestellt ist, mit einer Reibkraft beaufschlagt werden kann. Zwischen dem Reibelement 3 und dem Spuler 7 ist eine Vorrichtung 6 zum aufbringen einer Spinnpräparation vorgesehen.In Figure 1, 1 schematically describes a spinneret. A friction element 3 is arranged between the spinneret 1 and a winder 7. The height of the friction element 3, as indicated by arrows, is adjustable. The friction element 3 consists of a friction surface 4 and a friction surface 5, which are arranged about an axis 8. The friction element 3 is rotatable so that a monofilament 2 or a family of monofilaments which is passed between the friction surface 4 and the friction surface 5 and which is represented by the monofilaments 2 and 2 ′ delimiting the thread family can be subjected to a frictional force. A device 6 for applying a spin finish is provided between the friction element 3 and the winder 7.

In Fig. 2 ist die Drehbarkeit des Reibelementes durch Pfeile angedeutet. In Fig. 2a führt das Monofilament 2 zwischen der Reibfläche 4 und der Reibfläche 5 hindurch.In Fig. 2 the rotatability of the friction element is indicated by arrows. In Fig. 2a, the monofilament 2 passes between the friction surface 4 and the friction surface 5.

In Figur 2b sind das Reibelement 3 und die Reibflächen 4 und 5 in der Seitenansicht dargestellt.In Figure 2b, the friction element 3 and the friction surfaces 4 and 5 are shown in side view.

In Fig. 3 ist die Höhenverstellung des Reibelementes 3 als gesamte Einheit und die der Reibfläche 5 gegenüber 4 durch die Doppelpfeile angedeutet. In Fig. 3a führt der Faden zwischen der Reifläche 4 und der Reibfläche 5 hindurch. Fig. 3b ist eine Seitenansicht von Fig. 3a.In Fig. 3, the height adjustment of the friction element 3 as a whole unit and that of the friction surface 5 compared to 4 is indicated by the double arrows. In Fig. 3a, the thread passes between the frosted surface 4 and the friction surface 5. Figure 3b is a side view of Figure 3a.

In Fig. 4a sind die Reibflächen 4 und die Reibflächen 5 gegeneinander verstellbar angeordnet, wobei es zweckmässig ist, eine Reibfläche fest und die andere verschiebbar zu machen. Der Faden 2 führt zwischen den Reibflächen 4 und 5 hindurch. Fig. 4b ist eine Seitenansicht von Fig. 4a.4a, the friction surfaces 4 and the friction surfaces 5 are arranged so as to be mutually adjustable, it being expedient to make one friction surface fixed and the other displaceable. The thread 2 passes between the friction surfaces 4 and 5. Fig. 4b is a side view of Fig. 4a.

Im Betrieb tritt aus der Spinndüse 1 eine Fadenschar, bestehend aus den die Schar begrenzenden Monofilamenten 2,2', welche mit hoher Geschwindigkeit das Reibelement parallel durchlaufen und über die Reibfläche 4 und die Reibfläche 5 mittels des Spulers 7 verstreckt werden. Auf dem Weg zwischen dem Reibelement 3 und dem Spuler 7 wird eine geeignete Spinnpräparation 6 aufgebracht. Gegebenenfalls kann auch eine Galette zwischen Reibelement und Spuler angeordnet werden. Das resultierende Monofilament ist ein für die Weiterverarbeitung fertiges Produkt.In operation, a group of threads emerges from the spinneret 1, consisting of the monofilaments 2, 2 'delimiting the group, which run parallel through the friction element at high speed and are stretched over the friction surface 4 and the friction surface 5 by means of the winder 7. A suitable spin preparation 6 is applied on the path between the friction element 3 and the winder 7. If necessary, a godet can also be arranged between the friction element and the winder. The resulting monofilament is a finished product for further processing.

Ausführungsbeispiel 1Embodiment 1

Polyester mit einem V.I. von 74 dl/g und einer Schmelzetemperatur von ca. 287°C, wird durch eine Spinndüse 1 x 6/0.33/4D extrudiert und mit einer Geschwindigkeit von 5000 m/min abgezogen und Blasluft mit 0,25 - 0,4 m/s gekühlt. Der Abstand Spinndüse - Reibelement beträgt je nach Titer 30 - 160 cm. Der Faden wird in einem Abstand von h + 40 cm mit einer Spinnpräparation beaufschlagt. Die Verstellung der Reibelement (Fig. 2) erfolgte in drei verschiedenen stufen, 0°,20° und 40°, gemessen gegen die Fadenlaufrichtung. Die Messergebnisse sind in Tabelle 1 dargestellt. (Wickelgeschwindigkeit 5000 m/min)Polyester with a V.I. of 74 dl / g and a melt temperature of approx. 287 ° C, is extruded through a spinneret 1 x 6 / 0.33 / 4D and drawn off at a speed of 5000 m / min and blowing air at 0.25 - 0.4 m / s chilled. The distance between the spinneret and the friction element is 30-160 cm, depending on the titer. A spinning preparation is applied to the thread at a distance of h + 40 cm. The adjustment of the friction element (Fig. 2) was carried out in three different stages, 0 °, 20 ° and 40 °, measured against the thread running direction. The measurement results are shown in Table 1. (Winding speed 5000 m / min)

Darin bedeutet Stellung

  • 2 - 0°
  • 3- 20° Verdrehwinkel Reibelement/Faden
  • 4 - 40°
In it means position
  • 2 - 0 °
  • 3- 20 ° twist angle of friction element / thread
  • 4 - 40 °

Die Umschlingungswinkel betragen (Reibelement nach Fig. 2) bei Stellung

  • 2: 70°
  • 3: 100°
  • 4: 130°
The wrap angle is (friction element according to FIG. 2) when in position
  • 2: 70 °
  • 3: 100 °
  • 4: 130 °

Umschlingungswinkel bei Reibelement nach Fig. 3 50° - 100°.Wrapping angle in the friction element according to FIG. 3 50 ° - 100 °.

Ausführungsbeispiel 2Embodiment 2

In Tab. 2 sind die Garnkennwerte eines Versuches mit der Wickelgeschwindigkeit 4000 m/min. zusammengefasst. Sonstige Spinnbedingungen wie Beispiel 1.

Dt =
Bruchdehnung
Ft =
Reissfestigkeit
KS =
Kochschrumpf in Wasser
Tabelle 1 : Titer [dtex] h [cm] Stellung Dt [%] Ft [cN/tex] KS [%] 2.8 30 2 41.0 38.0 3.5 40 2 42.7 35.0 5.0 40 3 33.0 41.0 5.0 4.3 40 2 42.0 37.2 3.5 60 2 39.0 39.5 4.5 80 2 43.0 37.2 5.0 60 3 25.0 36.5 4.0 80 3 40.0 36.0 15.0 6.1 40 2 24.0 37.7 2.0 60 2 29.0 37.0 2.5 80 2 33.0 41.8 3.0 100 2 48.0 38.5 7.0 80 3 25.0 46.0 3.5 100 3 30.0 41.8 6.0 100 4 21.0 47.5 5.5 120 4 36.0 37.1 15 8 60 2 30.0 41.3 2.0 80 2 28.0 46.3 2.5 100 2 35.0 40.7 3.5 120 2 41.0 39.0 4.5 80 3 35.0 41.3 4.0 100 3 35.0 42.7 4.5 120 3 42.0 42.7 4.5 10 80 2 30.0 43.0 2.0 90 2 31.0 46.0 2.0 100 2 41.0 42.0 2.5 120 2 45.0 40.0 3.0 80 3 33.0 42.0 3.0 90 3 36.0 43.0 3.0 100 3 25.0 50.0 3.0 120 3 26.0 46.0 5.0 140 3 32.0 42.6 4.0 160 3 45.0 39.0 8.0 140 4 22.0 51.0 4.5 160 4 32.0 40.0 7.0 12.8 100 2 29.0 41.7 2.0 100 3 25.0 50.0 2.5 13.2 130 2 33.0 47.0 2.5 140 2 30.0 47.0 2.5 150 2 34.0 44.7 3.0 130 3 30.0 45.0 3.5 150 3 25.0 48.0 3.0 Tabelle 2 : Titer [dtex] h [cm] Stellung Dt [%] Ft [cN/tex] KS [%] 4 50 2 38.0 42.0 3.0 6 70 2 37.0 43.0 2.5 10 90 2 40.0 40.0 3.0 90 3 32.0 47.0 3.5 15 130 3 24.0 55.0 2.5 140 3 33.0 45.0 2.5 140 2 38.0 41.5 3.0 17 150 3 33.0 46.5 3.0 20 150 2 34.0 43.0 2.5 165 3 30.0 47.0 4.0 25 185 2 37.0 45.0 2.5 210 3 34.0 50.5 3.5 28 230 2 33.0 48.0 3.0 Table 2 shows the yarn parameters of a test with a winding speed of 4000 m / min. summarized. Other spinning conditions as example 1.
Dt =
Elongation at break
Ft =
Tear resistance
KS =
Boiling shrink in water
Table 1 : Titer [dtex] h [cm] position Dt [%] Ft [cN / tex] KS [%] 2.8 30th 2nd 41.0 38.0 3.5 40 2nd 42.7 35.0 5.0 40 3rd 33.0 41.0 5.0 4.3 40 2nd 42.0 37.2 3.5 60 2nd 39.0 39.5 4.5 80 2nd 43.0 37.2 5.0 60 3rd 25.0 36.5 4.0 80 3rd 40.0 36.0 15.0 6.1 40 2nd 24.0 37.7 2.0 60 2nd 29.0 37.0 2.5 80 2nd 33.0 41.8 3.0 100 2nd 48.0 38.5 7.0 80 3rd 25.0 46.0 3.5 100 3rd 30.0 41.8 6.0 100 4th 21.0 47.5 5.5 120 4th 36.0 37.1 15 8th 60 2nd 30.0 41.3 2.0 80 2nd 28.0 46.3 2.5 100 2nd 35.0 40.7 3.5 120 2nd 41.0 39.0 4.5 80 3rd 35.0 41.3 4.0 100 3rd 35.0 42.7 4.5 120 3rd 42.0 42.7 4.5 10th 80 2nd 30.0 43.0 2.0 90 2nd 31.0 46.0 2.0 100 2nd 41.0 42.0 2.5 120 2nd 45.0 40.0 3.0 80 3rd 33.0 42.0 3.0 90 3rd 36.0 43.0 3.0 100 3rd 25.0 50.0 3.0 120 3rd 26.0 46.0 5.0 140 3rd 32.0 42.6 4.0 160 3rd 45.0 39.0 8.0 140 4th 22.0 51.0 4.5 160 4th 32.0 40.0 7.0 12.8 100 2nd 29.0 41.7 2.0 100 3rd 25.0 50.0 2.5 13.2 130 2nd 33.0 47.0 2.5 140 2nd 30.0 47.0 2.5 150 2nd 34.0 44.7 3.0 130 3rd 30.0 45.0 3.5 150 3rd 25.0 48.0 3.0 Titer [dtex] h [cm] position Dt [%] Ft [cN / tex] KS [%] 4th 50 2nd 38.0 42.0 3.0 6 70 2nd 37.0 43.0 2.5 10th 90 2nd 40.0 40.0 3.0 90 3rd 32.0 47.0 3.5 15 130 3rd 24.0 55.0 2.5 140 3rd 33.0 45.0 2.5 140 2nd 38.0 41.5 3.0 17th 150 3rd 33.0 46.5 3.0 20th 150 2nd 34.0 43.0 2.5 165 3rd 30.0 47.0 4.0 25th 185 2nd 37.0 45.0 2.5 210 3rd 34.0 50.5 3.5 28 230 2nd 33.0 48.0 3.0

Wickelgeschwindigkeit 4000 m/min.Winding speed 4000 m / min.

Durch die gezielt beeinflusste Reibung auf ein Monofilament während der Abkühlphase ist es ohne Zwischenschaltung weiterer Aggregate in einfacher Weise gelungen, Dehnung und Festigkeit im beanspruchten Bereich zu variieren. Mit der erfindungsgemässen Anordnung ist es erstmals gelungen, auf eine einfache Art, eine Vielzahl von gleichen Monofilamenten im Titerbereich von 1 bis 30 dtex bei Geschwindigkeiten über 3500 m/min unter Verwendung von Reibelemente einstufig, d.h. ohne zusätzlichen Streckprozess herzustellen. Die erhaltenen Monofilamente sind in bezug auf % Uster, Rundheit und ihre dynamometrischen Eigenschaften den bekannten Typen überlegen.Due to the specifically influenced friction on a monofilament during the cooling phase, it was easily possible to vary the elongation and strength in the stressed area without the interposition of further units. With the arrangement according to the invention, it has been possible for the first time in a simple manner to use a plurality of identical monofilaments in the titer range from 1 to 30 dtex at speeds above 3500 m / min using friction elements, i.e. without an additional stretching process. The monofilaments obtained are superior to the known types in terms of% Uster, roundness and their dynamometric properties.

Claims (2)

  1. A process for the one-stage production of polyester monofilaments (2, 2') having a linear density of 2.8 to 30 dtex, characterized in that, during quench air cooling, the melt-spun monofilaments (2, 2') undergo no contact between a spinning jet (1) and a fork-shaped friction element (3) and are guided over the friction element (3), which is arranged at a distance of 200 to 2800 mm from the spinning jet (1), the wrap angle of friction element (3)/monofilament (2) being 50°-150°, then spin finished and wound up at a speed of 4000 to 6000 m/min.
  2. A polyester monofilament having a linear density of 2.8 to 30 dtex, produced by the process of Claim 1, characterized in that the monofilament simultaneously has
    an elongation of 20 - 45 %,
    a tenacity of 36 - 60 cN/tex,
    a boil shrinkage of 2 - 15%,
    Uster % < 1, and a
    uniform and round cross-section.
EP91903030A 1990-02-05 1991-02-05 Process for the high-speed spinning of monofilaments, and monofilaments thus manufactured Revoked EP0466868B1 (en)

Applications Claiming Priority (3)

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CH35490 1990-02-05
CH354/90 1990-02-05
PCT/CH1991/000027 WO1991011547A1 (en) 1990-02-05 1991-02-05 Process and device for the high-speed spinning of monofilaments, and monofilaments thus manufactured

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EP0466868A1 EP0466868A1 (en) 1992-01-22
EP0466868B1 true EP0466868B1 (en) 1996-01-24

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WO1995001471A1 (en) * 1993-07-02 1995-01-12 Rhone-Poulenc Viscosuisse S.A. Process for producing soil-repellent and abrasion-resistant monofilaments and their use
DE4336097A1 (en) * 1993-10-22 1995-04-27 Bayer Ag Continuous process for melt spinning monofilament threads
DE19600090A1 (en) * 1996-01-03 1997-07-10 Bayer Faser Gmbh Method and device for producing melt-spun monofilaments
US20030050692A1 (en) * 2000-12-22 2003-03-13 Avantec Vascular Corporation Delivery of therapeutic capable agents
DE102009042229A1 (en) * 2009-09-18 2011-04-14 Oerlikon Textile Gmbh & Co. Kg Apparatus for melt spinning, treating and winding a multifilament yarn

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US5431999A (en) 1995-07-11
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JPH04506550A (en) 1992-11-12
DE59107297D1 (en) 1996-03-07
CA2049989A1 (en) 1991-08-06
EP0466868A1 (en) 1992-01-22
US5266254A (en) 1993-11-30
WO1991011547A1 (en) 1991-08-08

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