EP0466868A1 - Process and device for the high-speed spinning of monofilaments, and monofilaments thus manufactured. - Google Patents

Process and device for the high-speed spinning of monofilaments, and monofilaments thus manufactured.

Info

Publication number
EP0466868A1
EP0466868A1 EP91903030A EP91903030A EP0466868A1 EP 0466868 A1 EP0466868 A1 EP 0466868A1 EP 91903030 A EP91903030 A EP 91903030A EP 91903030 A EP91903030 A EP 91903030A EP 0466868 A1 EP0466868 A1 EP 0466868A1
Authority
EP
European Patent Office
Prior art keywords
monofilaments
friction
friction surface
friction element
monofilament
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
EP91903030A
Other languages
German (de)
French (fr)
Other versions
EP0466868B1 (en
Inventor
Klaus Fischer
Halim Baris
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
ExNex AG
Original Assignee
Rhone Poulenc Viscosuisse SA
Societe de la Viscose Suisse SA
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Application filed by Rhone Poulenc Viscosuisse SA, Societe de la Viscose Suisse SA filed Critical Rhone Poulenc Viscosuisse SA
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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
    • 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 method for high-speed spinning a family of thermoplastic monofilaments with a single titer of 1 to 30 dtex and a device for carrying out the method, as well as 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.
  • 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 above-mentioned object is achieved in that the melt-spun monofilaments are passed directly over a friction element during the cooling by means of blown air ", then are spin-prepared and wound up.
  • the winding speed is 3000 to 6000 m / min., Preferably 4000 to 5000 m / min.
  • thermoplastics such as all kinds of polyesters, polyamides, in particular those known as nylon 66 or nylon 6, and also 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 gradual 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 a plurality of pins which have a cylindrical but also an 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 of angle and the wrap angle of the friction element / monofilament should be 50 "to 150 *.
  • 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 cooking shrinkage of 2-15% d) an irregularity of ⁇ 1% Uster and e) a uniform and round cross-section.
  • the invention is to be illustrated schematically on the basis of a drawing.
  • Fig. 1 The arrangement of the friction elements according to the invention in the region of a blow shaft with several monofilaments.
  • a spinneret is shown schematically at 1 in FIG.
  • 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 around 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 are subjected to a frictional force can.
  • 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.
  • Figure 2b the friction element 3 and the friction surfaces 4 and 5 are shown in side view.
  • FIG. 3 the height adjustment of the Reib comprise ⁇ 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 leads 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 Vl 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 with 0.25 - 0.4 m / s cooled.
  • 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 elements (Fig. 2) was carried out in three different stages, 0 ⁇ , 20 * and 40 °, measured against the direction of the thread. The measurement results are shown in Table 1. (Winding speed 5000 m / min)
  • the wrap angle is (friction element according to FIG. 2) when in position
  • Table 2 shows the yarn parameters of a test with a winding speed of 4000 m / min. summarized. Other spinning conditions as in Example 1.

Landscapes

  • 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

Dans ce procédé pour le filage rapide simultané de plusieurs monofilaments ayant un titre de 1 à 30 dtex, les monofils sont refroidis par soufflage d'air, levés sur un frottoir et bobinés directement. Le dispositif se compose d'un frottoir (3) avec des surfaces de frottement parallèles (4, 5). Le frottoir (3) se déplace dans le sens de la hauteur et peut pivoter pour régler le frottement entre ce frottoir et un monofil (2) ou un groupe de monofils. Le monofilament produit possède une résistance de 36 à 60 cN/tex, un allongement de 20 à 40 % et un retrait à la cuisson de 2 à 15 %.In this process for the simultaneous rapid spinning of several monofilaments having a titer of 1 to 30 dtex, the monofilaments are cooled by blowing air, lifted on a rub and wound directly. The device consists of a wiper (3) with parallel friction surfaces (4, 5). The scrubber (3) moves in the height direction and can pivot to adjust the friction between this scrubber and a monofilament (2) or a group of monofilaments. The monofilament produced has a strength of 36 to 60 cN / tex, an elongation of 20 to 40% and a shrinkage during cooking of 2 to 15%.

Description

Verfahren und Vorrichtung zum Schnellspinnen von Monofilamenten und damit hergestellte Monofilamente Method and device for the rapid spinning of monofilaments and monofilaments produced therewith
Die vorliegende Erfindung betrifft ein Verfahren zum Schnellspinnen einer Schar von thermoplastischen Mono- filamenten mit einem Einzeltiter von 1 bis 30 dtex und eine Vorrichtung zur Durchführung des Verfahrens sowie die danach hergestellten Monofilamente.The present invention relates to a method for high-speed spinning a family of thermoplastic monofilaments with a single titer of 1 to 30 dtex and a device for carrying out the method, as well as the monofilaments produced thereafter.
Das Abziehen vctn schmelzgesponnenen Multifilamenten über Bremsstifte, wobei durch Reibung Orientierung und Kri¬ stallisation beeinflusst werden, ist bekannt (CH-A-475 375). In der bekannten Vorrichtung ist zwischen unver¬ stellbaren, feststehenden Bremsstiften ein nicht ange¬ triebenes Rollenpaar zur Stabilisierung der konvergierten Multifilamente vorgesehen. Eine solche Vorrichtung ist zur Herstellung von Monofilen jedoch nicht geeignet.It is known to pull off melt-spun multifilaments via brake pins, whereby orientation and crystallization are influenced by friction (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 Spinn- geschwindigkeiten unter 1000 m/min gesponnen, mit Blas¬ luft gekühlt, aufgewickelt und in einem zweiten Arbeits¬ gang 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 herge¬ stellten Monofile, insbesondere ihre Festigkeit, be¬ friedigend 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. Aufgabe der Erfindung ist es, ein Verfahren zur Herstel¬ lung von feinen Monofilamenten zur Verfügung zu stellen, das ohne separaten Streckprozess bei hohen Wickelge¬ schwindigkeiten die Eigenschaften von bekannten Monofi- lamenten erreicht und/oder verbessert.Although the properties of the monofilaments produced in a known manner, in particular their strength, are satisfactory, 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. 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 varie- ren, dass gewünschte Eigenschaften der Monofilamente durch die Einstellparameter der Vorrichtung erzielt- wer¬ den 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 dadurch ge¬ löst, dass die schmelzgesponnenen Monofilamente während des Abkühlens mittels Blasluft unmittelbar über ein Reib¬ element geführt", anschliessend spinnpräpariert und aufge¬ spult werden.According to the invention, the above-mentioned object is achieved in that the melt-spun monofilaments are passed directly over a friction element during the cooling by means of blown air ", then are spin-prepared and wound up.
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 Poly¬ ester aller Art, Polyamide, insbesondere solche die als Nylon 66 oder Nylon 6 bekannt sind, sowie Polyacryl, Po- lyvinylidenfluorid, aus Polyethylen oder Polypropylen.The method is applicable to thermoplastics such as all kinds of polyesters, polyamides, in particular those known as nylon 66 or nylon 6, and also 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 ange¬ ordnet.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 kontinuier¬ lich 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 ge¬ wünschten Positionen jederzeit genau wiedereinεtellbar 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 gradual 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, be¬ stehen. Es können aber auch andere Körper mit gekrümmten Oberflächen verwendet werden.The friction element can consist of a plurality of pins which have a cylindrical but also an oval surface. However, other bodies with curved surfaces can also be used.
Es ist zweckmässig zum Erreichen der gewünschten Faden¬ eigenschaften einen Abstand der Reibelemente von der Spinndüse zu wählen, der 20 bis 280 cm beträgt, abhängig vom erwünschten Endtiter des Monofilamentes.In order to achieve the desired thread properties, it is expedient 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 ge¬ einsamen Achse der Reibelementflächen soll 0 bis 40 Win¬ kelgrade betragen und der Umschlingungswinkel Reibele- ment/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 of angle 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 auf¬ weisen.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 cooking shrinkage of 2-15% d) an irregularity of <1% Uster and e) 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:Show it:
Fig. 1 Die erfindungsgemässe Anordnung der Reibelemente im Bereich eines Blasschachtes mit mehreren Monofilamenten.Fig. 1 The arrangement of the friction elements according to the invention in the region of a blow shaft with several monofilaments.
Fig. 2 Das Reibelement in drehbarer AnordnungFig. 2 The friction element in a rotatable arrangement
Fig. 3 Das Reibelement mit variablem Abstand der ReibflächenFig. 3 The friction element with a variable distance between the friction surfaces
Fig. 4 Eine Variante des Reibelementes in einer seit¬ lich verstellbaren Anordnung der Reibflächen4 shows a variant of the friction element in a laterally adjustable arrangement of the friction surfaces
In Figur 1 ist mit 1 schematisch eine Spinndüse beschrie¬ ben. 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 Reib¬ element 3 besteht aus einer Reibfläche 4 und einer Reib¬ fläche 5, welche um eine Achse 8 angeordnet sind. Das Reibelement 3 ist drehbar, so dass ein zwischen der Reib¬ fläche 4 und der Reibfläche 5 hindurchgeführtes Monofi¬ lament 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.A spinneret is shown schematically at 1 in FIG. 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 around 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 are subjected to a frictional force can. 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 Figur 2b sind das Reibelement 3 und die Reibflächen 4 und 5 in der Seitenansicht dargestellt.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 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 Reibelementeε 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 hin¬ durch. Fig. 3b ist eine Seitenansicht von Fig. 3a.In Fig. 3, the height adjustment of the Reibelementeε 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 leads 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 zweck- mässig ist, eine Reibfläche fest und die andere ver¬ schiebbar zu machen. Der Faden 2 führt zwischen den Reib¬ flächen 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, be¬ stehend 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. Gegebenen¬ falls 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.
Ausführunqsbeispiel 1Example 1
Polyester mit einem V.l. von 74 dl/g und einer Schmelze¬ temperatur 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 Reibelemente (Fig. 2) erfolgte in drei verschiedenen Stufen, 0β,20* und 40°, gemessen gegen die Fadenlaufrichtung. Die Messergebnisse sind in Tabelle 1 dargestellt. (Wickelgeschwindigkeit 5000 m/min)Polyester with a Vl 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 with 0.25 - 0.4 m / s cooled. 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 elements (Fig. 2) was carried out in three different stages, 0 β , 20 * and 40 °, measured against the direction of the thread. The measurement results are shown in Table 1. (Winding speed 5000 m / min)
Darin bedeutet StellungIn it means position
2 - 0°2 - 0 °
3 - 20" Verdrehwinkel Reibelement/Faden3 - 20 "twist angle friction element / thread
4 - 40°4 - 40 °
Die Umschlingungswinkel betragen (Reibelement nach Fig. 2) bei StellungThe wrap angle is (friction element according to FIG. 2) when in position
2: 70° 3: 100° 4: 130°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 °.
Ausführunqsbeispiel 2Example 2
In Tab. 2 sind die Garnkennwerte eines Versuches mit der Wickelgeschwindigkeit 4000 m/min. zusammengefasst. Son¬ stige Spinnbedingungen wie Beispiel 1.Table 2 shows the yarn parameters of a test with a winding speed of 4000 m / min. summarized. Other spinning conditions as in Example 1.
Dt = BruchdehnungDt = elongation at break
Ft = ReissfestigkeitFt = tensile strength
KS = Kochschrumpf in Wasser Tabelle 1KS = shrinkage in water Table 1
abel le 2 abel le 2
Wickelgeschwindigkeit 4000 m/min,Winding speed 4000 m / min,
Durch die gezielt beeinflusste Reibung auf ein Monofi¬ lament während der Abkühlphase ist es ohne Zwischen¬ schaltung weiterer Aggregate in einfacher Weise gelungen, Dehnung und Festigkeit _im_beanspruchten Bereich zu vari¬ ieren. Mit der erfindungsgemässen Anordnung ist es erst¬ mals 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 Reibelementen einstufig, d.h. ohne zusätzlichen Streckprozess herzustellen. Die erhaltenen Monofilamente sind in bezug auf % Uster, Rundheit und ihre dynamome¬ trischen Eigenschaften den bekannten Typen überlegen. Due to the specifically influenced friction on a monofilament during the cooling phase, it was possible in a simple manner to vary the stretch 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

Patentansprüche Claims
1. Verfahren zum Schnellspinnen einer Schar von thermo¬ plastischen Monofilamenten (2,2') mit einem Einzel- titer von 1 bis 30 dtex, dadurch gekennzeichnet, dass die schmelzgesponnenen Monofilamente (2,2") während des Abkühlens mittels Blasluft unmittelbar über ein Reible ent (3) geführt, anschliessend spinnpräpariert und aufgespult werden.1. A process for the rapid spinning of a family of thermoplastic monofilaments (2,2 ') with a single titer of 1 to 30 dtex, characterized in that the melt-spun monofilaments (2.2 ") during cooling by means of blown air directly over a Reible ent (3) guided, then spin-prepared and wound up.
2. Verfahren nach Anspruch 1, dadurch gekennzeichnet, dass die Monofilamente mit einer Geschwindigkeit von 3000 bis 6000 m/min. aufgespult werden.2. The method according to claim 1, characterized in that the monofilaments at a speed of 3000 to 6000 m / min. be wound up.
3. Verfahren nach den Ansprüchen 1 und 2, dadurch gekenn¬ zeichnet, dass das Monofilament aus einem Polyester, einem Polyamid, einem Polyacryl , aus Polyvinyliden- fluorid, aus Polyethylen oder Polypropylen hergestellt wird.3. The method according to claims 1 and 2, characterized gekenn¬ characterized in that the monofilament is made of a polyester, a polyamide, a polyacrylic, polyvinylidene fluoride, polyethylene or polypropylene.
4. Vorrichtung zur Durchführung des Verfahrens nach den4. Device for performing the method according to the
Ansprüchen 1 bis 3, dadurch gekennzeichnet, dass das Reibelement (3) wenigstens aus einer oberen Reibflä¬ che (4) und aus einer unteren achsparallelen Reib¬ fläche (5) besteht und unmittelbar unterhalb einer Spinndüse (1) um seine Achse (8) drehbar und in der Höhe verstellbar angeordnet ist.Claims 1 to 3, characterized in that the friction element (3) consists of at least one upper friction surface (4) and one lower axially parallel friction surface (5) and immediately below a spinneret (1) about its axis (8) is rotatable and adjustable in height.
5. Vorrichtung nach Anspruch 4, dadurch gekennzeichnet, dass die obere Reibfläche (4) und die untere Reibflä¬ che (5) einzeln in ihrem Abstand zueinander und ge¬ meinsam in der Höhe verstellbar sind. 5. The device according to claim 4, characterized in that the upper friction surface (4) and the lower Reibflä¬ surface (5) are individually adjustable in their distance from one another and together in height.
6. Vorrichtung nach Anspruch 4, dadurch gekennzeichnet, dass die Reibflächen (4 und 5) aus zylindrischen Stiften oder ovalen Flächen bestehen.6. The device according to claim 4, characterized in that the friction surfaces (4 and 5) consist of cylindrical pins or oval surfaces.
7. Vorrichtung nach Anspruch 4 und 5, dadurch gekenn¬ zeichnet, dass das Reibelement (3) in einem Abstand von 200 bis 2800 mm zur Spinndüse (1) angeordnet ist.7. The device according to claim 4 and 5, characterized gekenn¬ characterized in that the friction element (3) is arranged at a distance of 200 to 2800 mm to the spinneret (1).
8. Vorrichtung nach Anspruch 4, dadurch gekennzeichnet, dass die Reibflächenteile (4), (5) in einem Umschlin¬ gungswinkel et von 0 bis 40 Grad zwischen Fadenlauf und gemeinsamer Achse drehbar angeordnet sind.8. The device according to claim 4, characterized in that the friction surface parts (4), (5) are rotatably arranged at a wrap angle et of 0 to 40 degrees between the thread path and the common axis.
9. Monofilament hergestellt nach dem Verfahren gemäss den Ansprüchen 1 bis 3, dadurch gekennzeichnet, dass die Bedingungen a - e gleichzeitig erfüllt sein müssen, wobei9. monofilament produced by the method according to claims 1 to 3, characterized in that the conditions a - e must be fulfilled at the same time, wherein
a) eine Dehnung von 20 - 45 % b) eine Festigkeit von 36 - 60 cN/tex c) einen Kochschrumpf von 2 - 15 % d) Uster % <1 e) gleichmässiger und runder Querschnitt a) an elongation of 20 - 45% b) a strength of 36 - 60 cN / tex c) a cooking shrinkage of 2 - 15% d) Uster% <1 e) 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)

Application Number Priority Date Filing Date Title
CH354/90 1990-02-05
CH35490 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

Publications (2)

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

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EP (1) EP0466868B1 (en)
JP (1) JPH04506550A (en)
KR (1) KR920701536A (en)
BR (1) BR9104410A (en)
CA (1) CA2049989A1 (en)
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WO (1) WO1991011547A1 (en)

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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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CA2049989A1 (en) 1991-08-06
WO1991011547A1 (en) 1991-08-08
EP0466868B1 (en) 1996-01-24
JPH04506550A (en) 1992-11-12
BR9104410A (en) 1992-04-21
KR920701536A (en) 1992-08-12
DE59107297D1 (en) 1996-03-07
US5431999A (en) 1995-07-11
US5266254A (en) 1993-11-30

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