EP0408994A1 - Process for the preparation of flatyarn - Google Patents

Process for the preparation of flatyarn Download PDF

Info

Publication number
EP0408994A1
EP0408994A1 EP90112807A EP90112807A EP0408994A1 EP 0408994 A1 EP0408994 A1 EP 0408994A1 EP 90112807 A EP90112807 A EP 90112807A EP 90112807 A EP90112807 A EP 90112807A EP 0408994 A1 EP0408994 A1 EP 0408994A1
Authority
EP
European Patent Office
Prior art keywords
roller
spinneret
distance
yarn
air
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.)
Withdrawn
Application number
EP90112807A
Other languages
German (de)
French (fr)
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.)
Viscosuisse SA
Original Assignee
Rhone Poulenc Viscosuisse SA
Societe de la Viscose Suisse SA
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Rhone Poulenc Viscosuisse SA, Societe de la Viscose Suisse SA filed Critical Rhone Poulenc Viscosuisse SA
Publication of EP0408994A1 publication Critical patent/EP0408994A1/en
Withdrawn legal-status Critical Current

Links

Images

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
    • D01D5/08—Melt spinning methods
    • D01D5/098—Melt spinning methods with simultaneous stretching
    • D—TEXTILES; PAPER
    • D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
    • D01D—MECHANICAL METHODS OR APPARATUS IN THE MANUFACTURE OF ARTIFICIAL FILAMENTS, THREADS, FIBRES, BRISTLES OR RIBBONS
    • D01D5/00—Formation of filaments, threads, or the like
    • D01D5/08—Melt spinning methods
    • D01D5/088—Cooling filaments, threads or the like, leaving the spinnerettes
    • D—TEXTILES; PAPER
    • D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
    • D01F—CHEMICAL FEATURES IN THE MANUFACTURE OF ARTIFICIAL FILAMENTS, THREADS, FIBRES, BRISTLES OR RIBBONS; APPARATUS SPECIALLY ADAPTED FOR THE MANUFACTURE OF CARBON FILAMENTS
    • D01F6/00—Monocomponent artificial filaments or the like of synthetic polymers; Manufacture thereof
    • D01F6/58—Monocomponent artificial filaments or the like of synthetic polymers; Manufacture thereof from homopolycondensation products
    • D01F6/62—Monocomponent artificial filaments or the like of synthetic polymers; Manufacture thereof from homopolycondensation products from polyesters

Definitions

  • the invention relates to a method for producing plain textile yarns from polyesters in a one-step process.
  • Textile plain yarns made of polyester are untextured yarns, which are produced by melt spinning and consist of a bundle of parallel filaments.
  • Polyester is understood to mean all thermoplastic materials which contain at least 85% by weight of polyethylene terephthalate and are melt-spinnable.
  • EP-A-0 176 937 describes a process for the production of plain yarn. According to the known method, among other things, multifilament polyester threads are soaked with an excess of liquid after leaving the spinning zone in order to increase the stretching force and are stretched at least 1,000 m / min over several godet factories.
  • CH-A-670 107 describes a rapid spinning stretching process which works with several godet factories and which also processes smooth yarns from polyesters.
  • the object of the invention is to provide a method for producing a smooth yarn which works in one stage at high speeds and without a drafting device over a large titer range without problems.
  • the object is achieved according to the invention in that the filaments extruded from a spinneret are cooled by means of a rotating roller and are then wound up at a speed of 4,000 to 6,000 m / min.
  • the advantage of the method according to the invention can be seen in particular in the fact that instead of a large number of complicated, rotating units which are carefully coordinated with one another, only a single rotating roller occurs.
  • the directly driven roller preferably consists of a surface made of copper or a copper alloy.
  • the distance of the roller surface from the spinneret depends on the titer, from approximately 500 mm to 1200 mm, preferably 600 to 1000 mm. With a distance of less than 500 mm this is sufficient achievable cooling is not sufficient, a distance of more than 1,200 mm does not improve the thread properties and only increases the total volume of the apparatus.
  • the contact length of the filaments on the roller is 100 to 180 mm, preferably 120 mm.
  • the roller is usually driven by an electric motor and rotates at a circumferential speed of 800 to 2,000 m / min, preferably at 1,000 to 1,800 m / min, in particular 1,000 to 1,400 m / min.
  • the driven deflection roller primarily affects the elongation, which decreases under otherwise constant conditions. It is advantageous to use an air-bearing deflection roller and to drive it with an air pressure of, for example, 3 to 6 bar.
  • the spinning run by optimizing the thread running geometry e.g. can be improved by varying the distance between the deflection roller and the ensimation, it is advisable to choose the distance between the deflection roller and the ensiming pin such that the base angle of the convergence triangle is more than 70 °.
  • the single figure shows a schematic representation of the method according to the invention with a cooling roll.
  • 1, 1 denotes a spinneret.
  • a bundle of polyester threads 2 emerges from the spinneret, the edge threads of which are denoted by 2 'and 2 ⁇ .
  • a cooling roller 3 is provided between a deflection roller 4 and the spinneret 1.
  • a resulting total thread 5 runs over a convergence point 6, where a spin finish is applied in a known manner.
  • An additional heater 7 can be provided in front of a winder 8.
  • a polyester filament thread bundle 2 emerging from the spinneret 1 strikes the surface of the cooling roller 3, where it is cooled while in contact with the roller surface.
  • the cooling roller rotates at a peripheral speed of 800 to 2,000 m / min.
  • the thread 5 is fed via the air-bearing deflection roller 4 and via the convergence point 6 to the winder 8 at a winding speed of at least 4,000 m / min.
  • the effect of the cooling roller can be enhanced by heat dissipation using a coolant.
  • An integrated thermal treatment of the yarn can be advantageous to achieve certain yarn properties.
  • a standard polyester polymer with an intrinsic viscosity of 0.75 dl / g was spun without godets at a constant winding speed of 5,000 m / min to give the three titers dtex 67 f 12 and 80 f 12 and 167 f 30.
  • Vcu peripheral speed of the copper roller
  • F / W distance from spinneret to roller
  • Dt elongation at break
  • Ft tensile strength
  • KS shrinkage in water
  • Table 1 example Vcu (F / W) German Ft KS [m / min] [mm] [%] [cN / tex] [%] 1 air-cooled 65 34 4th 2nd 1000 600 29 32 6 3rd 1100 600 23 30th 7 4th 1300 600 31 24th 8th 5 1200 650 38 25th 12 6 1300 600 25th 24th 10th
  • Example 1 is given as a comparative example.
  • Examples 2 - 4 differ in the peripheral speeds of the roller (deflection roller only with air bearings).
  • Examples 5 and 6 show spinning conditions and thread properties using the air-bearing, driven deflection roller.
  • Table 2 example Vcu (F / W) German Ft KS [m / min] [mm] [%] [cN / tex] [%] 7 air-cooled 74 35 4th 8th 1100 700 26 26 8th 9 1200 700 33 24th 8th 10th 1600 700 43 26 13 11 1800 700 49 28 22
  • Table 4 shows the roll parameters and thread properties of a dtex 67 f 12 with the activation of a heater at 150 ° C and driven deflection roller.
  • Table 4 example Vcu (F / W) German Ft KS [m / min] [mm] [%] [cN / tex] [%] 18th air-cooled 72 34 3rd 19th 1000 60 30th 30th 6 20th 1200 60 29 27th 8th 21st 1000 70 38 32 9 22 1200 70 34 31 9 23 2000 70 61 26 61
  • Example 18 is again a comparative example according to the known air-cooled method.
  • Examples 19-23 show an improved strength through the use of an integrated thermal treatment (heating rail).
  • the method according to the invention enables the simple and economical production of plain textile yarns from polyester in a wide titer range, by suitable settings of the operating parameters of the cooling roll at winding speeds of 4,000 to 6,000 m / min.

Landscapes

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

Abstract

In a process for preparing flat textile yarns made of polyester, a one-stage operation comprises cooling a multifilament yarn by means of a rotating roll (3) and winding it onto a winder (8) at from 4,000 to 6,000 m/min. The process makes it possible to prepare flat yarns over a wide count range by simply varying the roll parameters. The process is simple and economical to carry out. The resulting flat yarn can be processed directly into textile fabrics.

Description

Die Erfindung betrifft ein Verfahren zur Herstellung von textilen Glattgarnen aus Polyestern in einem Einstufen­verfahren.The invention relates to a method for producing plain textile yarns from polyesters in a one-step process.

Textile Glattgarne aus Polyester sind untexturierte Gar­ne, die durch Schmelzspinnen hergestellt werden und aus einem Bündel von parallelen Filamenten bestehen. Textil bedeutet im Gegensatz zu technisch, dass solche Garne sich im Gesamttiterbereich bis höchstens 500 dtex bewe­gen und aus Polymeren mit einer intrinsischen Viskosität I.V.<=0.80 dl/g hergestellt werden.Textile plain yarns made of polyester are untextured yarns, which are produced by melt spinning and consist of a bundle of parallel filaments. In contrast to technical terms, textile means that such yarns have a total denier of up to 500 dtex and are made from polymers with an intrinsic viscosity I.V. <= 0.80 dl / g.

Unter Polyester sind alle thermoplastische Kunststoffe zu verstehen, welche wenigstens 85 Gew. % Polyethylentereph­thalat enthalten und schmelzspinnbar sind.Polyester is understood to mean all thermoplastic materials which contain at least 85% by weight of polyethylene terephthalate and are melt-spinnable.

Die EP-A-0 176 937 beschreibt ein Verfahren zur Herstel­lung von Glattgarn. Nach dem bekannten Verfahren werden unter anderem multifile Polyesterfäden nach dem Verlassen der Spinnzone zwecks Erhöhung der Streckkraft mit einem Überschuss an Flüssigkeit durchtränkt und mit mindestens 1'000 m/min über mehrere Galettenwerke verstreckt.EP-A-0 176 937 describes a process for the production of plain yarn. According to the known method, among other things, multifilament polyester threads are soaked with an excess of liquid after leaving the spinning zone in order to increase the stretching force and are stretched at least 1,000 m / min over several godet factories.

Ein mit mehreren Galettenwerken arbeitendes Schnellspinn­streckverfahren, nach welchem auch glatte Garne aus Poly­estern hergestellt werden, beschreibt die CH-A-670 107.CH-A-670 107 describes a rapid spinning stretching process which works with several godet factories and which also processes smooth yarns from polyesters.

Danach erfolgt das Aufspulen nach dem Verstrecken, Ther­mofixieren und Relaxieren bei einer Geschwindigkeit von mindestens 4'000 m/min. Die einzelnen Verfahrensschritte sind im Spinnstreckverfahren zusammengefasst und werden in der Druckschrift als einstufig bezeichnet.This is followed by winding up after stretching, heat setting and relaxing at a speed of at least 4,000 m / min. The individual process steps are summarized in the spin-stretching process and are referred to in the publication as one-stage.

Beide bekannte Verfahren benötigen jedoch zur Herstellung des Glattgarns eine Vielzahl von Galettenpaaren zum Lie­fern, Verstrecken und Relaxieren, wodurch das Verfahren apparativ und von der Steuerung her sehr aufwendig wird.However, both known methods require a large number of pairs of godets for delivery, drawing and relaxing in order to produce the plain yarn, which means that the method is very complex in terms of apparatus and control.

Aufgabe der Erfindung ist es, ein Verfahren zur Herstel­lung eines glatten Garnes zur Verfügung zu stellen, das in einer Stufe bei hohen Geschwindigkeiten und ohne Streckwerk über einen grossen Titerbereich störungsfrei arbeitet.The object of the invention is to provide a method for producing a smooth yarn which works in one stage at high speeds and without a drafting device over a large titer range without problems.

Die Aufgabe wird erfindungsgemäss dadurch gelöst, dass die aus einer Spinndüse extrudierten Filamente mittels einer rotierenden Walze abgekühlt und unmittelbar darauf mit einer Geschwindigkeit von 4'000 bis 6'000 m/min auf­gewickelt werden.The object is achieved according to the invention in that the filaments extruded from a spinneret are cooled by means of a rotating roller and are then wound up at a speed of 4,000 to 6,000 m / min.

Der Vorteil des erfindungsgemässen Verfahrens ist insbe­sondere darin zu sehen, dass anstelle einer Vielzahl von komplizierten, rotierenden aufeinander minutiös abge­stimmten Aggregaten, nur eine einzige rotierende Walze tritt. Die direkt angetriebene Walze besteht bevorzugt aus einer Oberfläche aus Kupfer oder einer Kupferlegie­rung.The advantage of the method according to the invention can be seen in particular in the fact that instead of a large number of complicated, rotating units which are carefully coordinated with one another, only a single rotating roller occurs. The directly driven roller preferably consists of a surface made of copper or a copper alloy.

Es hat sich als zweckmässig erwiesen, den Abstand der Walzenoberfläche von der Spinndüse titerabhängig von etwa 500 mm bis 1'200 mm, bevorzugt 600 bis 1'000 mm, zu wäh­len. Bei einem Abstand von weniger als 500 mm reicht die erzielbare Abkühlung nicht aus, ein Abstand von mehr als 1'200 mm bringt keine Verbesserung der Fadeneigenschaften und vergrössert lediglich das Gesamtvolumen der Appara­tur.It has proven to be expedient to choose the distance of the roller surface from the spinneret, depending on the titer, from approximately 500 mm to 1200 mm, preferably 600 to 1000 mm. With a distance of less than 500 mm this is sufficient achievable cooling is not sufficient, a distance of more than 1,200 mm does not improve the thread properties and only increases the total volume of the apparatus.

Die Kontaktlänge der Filamente auf der Walze, das heisst die Strecke, auf der die Filamente die Walzenoberfläche berühren, beträgt 100 bis 180 mm, bevorzugt 120 mm.The contact length of the filaments on the roller, that is to say the distance over which the filaments touch the roller surface, is 100 to 180 mm, preferably 120 mm.

Die Walze wird in der Regel mit einem Elektromotor ange­trieben und rotiert mit einer Umfangsgeschwindigkeit von 800 bis 2'000 m/min, bevorzugt mit 1'000 bis 1'800 m/min, insbesondere 1'000 bis 1'400 m/min.The roller is usually driven by an electric motor and rotates at a circumferential speed of 800 to 2,000 m / min, preferably at 1,000 to 1,800 m / min, in particular 1,000 to 1,400 m / min.

Durch die angetriebene Umlenkrolle wird vor allem die Dehnung beeinflusst, die unter sonst konstanten Beding­ungen abnimmt. Es ist vorteilhaft, eine luftgelagerte Umlenkrolle zu verwenden und diese mit einem Luftdruck von beispielsweise 3 bis 6 bar anzutreiben.The driven deflection roller primarily affects the elongation, which decreases under otherwise constant conditions. It is advantageous to use an air-bearing deflection roller and to drive it with an air pressure of, for example, 3 to 6 bar.

Da der Spinnlauf durch Optimierung der Fadenlaufgeome­trie, z.B. durch Variation des Abstandes Umlenkrolle-­Ensimierung, verbessert werden kann, ist es zweckmässig, den Abstand der Umlenkrolle zum Ensimierstift so zu wäh­len, dass der Basiswinkel des Konvergenzdreiecks mehr als 70° beträgt.Since the spinning run by optimizing the thread running geometry, e.g. can be improved by varying the distance between the deflection roller and the ensimation, it is advisable to choose the distance between the deflection roller and the ensiming pin such that the base angle of the convergence triangle is more than 70 °.

Es ist auch zweckmässig, zwischen einem Ensimierstift und einem Spuler, einen Heizer vorzusehen. Das hat den Vor­teil, dass der Faden im Spinnprozess direkt thermisch be­handelt werden kann.It is also appropriate to provide a heater between an ensemble pin and a winder. This has the advantage that the thread can be thermally treated directly in the spinning process.

Die Erfindung soll anhand einer Zeichnung näher beschrie­ben werden.The invention will be described in more detail with reference to a drawing.

Es zeigt die einzige Figur eine schematische Darstellung des erfindungsgemässen Verfahren mit einer Kühlwalze. Gemäss Fig. 1 ist mit 1 eine Spinndüse bezeichnet. Aus der Spinndüse tritt ein Bündel von Polyesterfäden 2 aus, deren Randfäden mit 2′ bzw. 2˝ bezeichnet sind. Eine Kühlwalze 3 ist zwischen einer Umlenkrolle 4 und der Spinndüse 1 vorgesehen. Ein resultierender Gesamtfaden 5 läuft über einen Konvergenzpunkt 6, wo in bekannter Weise eine Spinnpräparation aufgebracht wird. Eine zusätzlicher Heizer 7 kann vor einem Spuler 8 vorgesehen sein.The single figure shows a schematic representation of the method according to the invention with a cooling roll. 1, 1 denotes a spinneret. A bundle of polyester threads 2 emerges from the spinneret, the edge threads of which are denoted by 2 'and 2˝. A cooling roller 3 is provided between a deflection roller 4 and the spinneret 1. A resulting total thread 5 runs over a convergence point 6, where a spin finish is applied in a known manner. An additional heater 7 can be provided in front of a winder 8.

Im Betrieb trifft ein aus der Spinndüse 1 austretendes Polyesterfilamentfadenbündel 2 auf die Oberfläche der Kühlwalze 3, wo es während seiner Berührung mit der Walzenoberfläche abgekühlt wird. Dabei dreht sich die Kühlwalze mit einer Umfangsgeschwindigkeit von 800 bis 2'000 m/min. Der Faden 5 wird über die luftgelagerte Um­lenkrolle 4 und über den Konvergenzpunkt 6 dem Spuler 8 mit einer Wickelgeschwindigkeit von mindestes 4'000 m/min zugeführt.In operation, a polyester filament thread bundle 2 emerging from the spinneret 1 strikes the surface of the cooling roller 3, where it is cooled while in contact with the roller surface. The cooling roller rotates at a peripheral speed of 800 to 2,000 m / min. The thread 5 is fed via the air-bearing deflection roller 4 and via the convergence point 6 to the winder 8 at a winding speed of at least 4,000 m / min.

Im Bedarfsfall kann die Wirkung der Kühlwalze durch Wär­meabfuhr mittels eines Kühlmittels verstärkt werden. Zur Erzielung bestimmter Garneigenschaften kann eine inte­grierte thermische Behandlung des Garnes von Vorteil sein.If necessary, the effect of the cooling roller can be enhanced by heat dissipation using a coolant. An integrated thermal treatment of the yarn can be advantageous to achieve certain yarn properties.

AnwendungsbeispieleExamples of use VersuchsparameterExperimental parameters

Ein Standard-Polyester-Polymer mit einer intrinsischen Viskosität von 0,75 dl/g wurde galettenlos mit einer kon­stanten Wickelgeschwindigkeit von 5'000 m/min zu den drei Titern dtex 67 f 12 und 80 f 12 und 167 f 30 versponnen.A standard polyester polymer with an intrinsic viscosity of 0.75 dl / g was spun without godets at a constant winding speed of 5,000 m / min to give the three titers dtex 67 f 12 and 80 f 12 and 167 f 30.

Variiert wurden: - der Abstand Spinndüse/Walze: 500 - 1′200 mm - die Walzenumfangsgeschwindigkeit: 800 - 2′000 m/min - die Fadenkontaktlänge auf der Walze: 100 - 180 mm The following were varied: - the distance between spinneret and roller: 500 - 1,200 mm - the roller circumferential speed: 800 - 2,000 m / min - the thread contact length on the roller: 100 - 180 mm

Die Spinnbedingungen und die erhaltenen Fadeneigenschaften sind in Tabelle 1 für dtex 67 f 12, in Tabelle 2 für dtex 80 f 12 und in Tabelle 3 für dtex 167 f 30 aufgezeigt.The spinning conditions and the thread properties obtained are shown in Table 1 for dtex 67 f 12, in Table 2 for dtex 80 f 12 and in Table 3 for dtex 167 f 30.

Es bedeuten:
Vcu = Umfangsgeschwindigkeit der Kupferwalze
F/W = Abstand Spinndüse zur Walze
Dt = Reissdehnung
Ft = Reissfestigkeit
KS = Kochschrumpf in Wasser Tabelle 1 Beispiel Vcu (F/W) Dt Ft KS [m/min] [mm] [%] [cN/tex] [%] 1 luftgekühlt 65 34 4 2 1000 600 29 32 6 3 1100 600 23 30 7 4 1300 600 31 24 8 5 1200 650 38 25 12 6 1300 600 25 24 10 It means:
Vcu = peripheral speed of the copper roller
F / W = distance from spinneret to roller
Dt = elongation at break
Ft = tensile strength
KS = shrinkage in water Table 1 example Vcu (F / W) German Ft KS [m / min] [mm] [%] [cN / tex] [%] 1 air-cooled 65 34 4th 2nd 1000 600 29 32 6 3rd 1100 600 23 30th 7 4th 1300 600 31 24th 8th 5 1200 650 38 25th 12 6 1300 600 25th 24th 10th

Beispiel 1 ist als Vergleichsbeispiel angegeben. Die Bei­spiele 2 - 4 unterscheiden sich in den Umfangsgeschwin­digkeiten der Walze (Umlenkrolle nur luftgelagert). Die Beispiele 5 und 6 geben Spinnbedingungen und Fadeneigen­schaften unter Verwendung der luftgelagerten, angetrie­benen Umlenkrolle wieder.Example 1 is given as a comparative example. Examples 2 - 4 differ in the peripheral speeds of the roller (deflection roller only with air bearings). Examples 5 and 6 show spinning conditions and thread properties using the air-bearing, driven deflection roller.

Alle unter den in Tabelle 1 angegebenen Bedingungen her­gestellten Garne zeigten keine Kräuselung. Tabelle 2 Beispiel Vcu (F/W) Dt Ft KS [m/min] [mm] [%] [cN/tex] [%] 7 luftgekühlt 74 35 4 8 1100 700 26 26 8 9 1200 700 33 24 8 10 1600 700 43 26 13 11 1800 700 49 28 22 All yarns made under the conditions shown in Table 1 showed no crimp. Table 2 example Vcu (F / W) German Ft KS [m / min] [mm] [%] [cN / tex] [%] 7 air-cooled 74 35 4th 8th 1100 700 26 26 8th 9 1200 700 33 24th 8th 10th 1600 700 43 26 13 11 1800 700 49 28 22

Für den Gesamttiter dtex 80 f 12 wurde als günstigster Abstand F/W 700 mm ermittelt, bei dem dann die Garneigen­schaften in Abhängigkeit von der Walzengeschwindigkeit untersucht wurden. Die Resultate der Beispiele 8 - 11 lassen erkennen, dass im Vergleich zu Beispiel 7 durch Kühlung mit der Walze die Dt stark reduziert werden kann. Tabelle 3 Beispiel Vcu (F/W) Dt Ft KS [m/min] [mm] [%] [cN/tex] [%] 12 luftgekühlt 70 34 4 13 1400 60 25 24 8 14 1400 70 27 25 13 15 1400 80 43 26 52 16 1200 70 27 24 13 17 1600 70 39 25 14 For the total titre dtex 80 f 12, the most favorable distance F / W was 700 mm, at which the yarn properties depending on the roll speed were then examined. The results of Examples 8-11 show that the Dt can be greatly reduced in comparison to Example 7 by cooling with the roller. Table 3 example Vcu (F / W) German Ft KS [m / min] [mm] [%] [cN / tex] [%] 12 air-cooled 70 34 4th 13 1400 60 25th 24th 8th 14 1400 70 27th 25th 13 15 1400 80 43 26 52 16 1200 70 27th 24th 13 17th 1600 70 39 25th 14

In Tabelle 3 wurden trotz höherer Filamentzahlen beim Ti­ter dtex 167 f 30 glatte Fäden erhalten. Hierbei wurde bei einem konstanten Antriebsdruck der Umlenkrolle von 5.5 bar gearbeitet.In spite of higher filament numbers in Table 3, 30 smooth threads were obtained in Table 3 with dtex 167 f. Here, the deflection pulley was operated at a constant drive pressure of 5.5 bar.

In Tabelle 4 sind die Walzenparameter und Fadeneigen­schaften eines dtex 67 f 12 unter Einschaltung eines Hei­zers mit 150°C und angetriebener Umlenkrolle wiedergege­ben. Tabelle 4 Beispiel Vcu (F/W) Dt Ft KS [m/min] [mm] [%] [cN/tex] [%] 18 luftgekühlt 72 34 3 19 1000 60 30 30 6 20 1200 60 29 27 8 21 1000 70 38 32 9 22 1200 70 34 31 9 23 2000 70 61 26 61 Table 4 shows the roll parameters and thread properties of a dtex 67 f 12 with the activation of a heater at 150 ° C and driven deflection roller. Table 4 example Vcu (F / W) German Ft KS [m / min] [mm] [%] [cN / tex] [%] 18th air-cooled 72 34 3rd 19th 1000 60 30th 30th 6 20th 1200 60 29 27th 8th 21st 1000 70 38 32 9 22 1200 70 34 31 9 23 2000 70 61 26 61

Beispiel 18 ist wiederum ein Vergleichsbeispiel nach dem bekannten luftgekühlten Verfahren. Die Beispiele 19 - 23 zeigen eine verbesserte Festigkeit durch Einsatz einer intergrierten thermischen Behandlung (Heizschiene).Example 18 is again a comparative example according to the known air-cooled method. Examples 19-23 show an improved strength through the use of an integrated thermal treatment (heating rail).

Das erfindungsgemässe Verfahren ermöglicht auf einfache und wirtschaftliche Weise die einstufige Herstellung von textilen Glattgarnen aus Polyestern in einem weiten Ti­terbereich, und zwar durch geeignete Einstellungen der Betriebsparameter der Kühlwalze bei Wickelgeschwindig­keiten von 4'000 bis 6'000 m/min.The method according to the invention enables the simple and economical production of plain textile yarns from polyester in a wide titer range, by suitable settings of the operating parameters of the cooling roll at winding speeds of 4,000 to 6,000 m / min.

Claims (7)

1. Verfahren zur Herstellung von textilen Glattgarnen aus Polyestern in einem Einstufenprozess, dadurch ge­kennzeichnet, dass die aus einer Spinndüse (1) extru­dierten Filamente (2, 2′, 2˝) mittels einer rotieren­den Walze (3) abgekühlt und mit einer Aufspulgeschwin­digkeit von 4'000 bis 6'000 m/min aufgewickelt werden.1. A process for the production of plain textile yarns from polyesters in a one-step process, characterized in that the filaments (2, 2 ', 2˝) extruded from a spinneret (1) are cooled by means of a rotating roller (3) and at a winding speed of 4 '000 to 6'000 m / min are wound up. 2. Verfahren nach Anspruch 1, dadurch gekennzeichnet, dass der Abstand der Walze (3) von der Spinndüse (1) 500 bis 1200 mm beträgt.2. The method according to claim 1, characterized in that the distance of the roller (3) from the spinneret (1) is 500 to 1200 mm. 3. Verfahren nach den Ansprüchen 1 und 2, dadurch gekenn­zeichnet, dass die Kontaktlänge der Filamente auf der (3) Walze 100 - 180 mm beträgt.3. The method according to claims 1 and 2, characterized in that the contact length of the filaments on the (3) roller is 100-180 mm. 4. Verfahren nach den Ansprüchen 1 bis 3, dadurch ge­kennzeichnet, dass die Walze (3) mit einer Umfangsge­schwindigkeit von 800 bis 2'000 m/min rotiert.4. The method according to claims 1 to 3, characterized in that the roller (3) rotates at a peripheral speed of 800 to 2,000 m / min. 5. Verfahren nach Anspruch 1, dadurch gekennzeichnet, dass die luftgelagerte Umlenkrolle (4) mittels Druck­luft angetrieben wird.5. The method according to claim 1, characterized in that the air-bearing deflection roller (4) is driven by means of compressed air. 6. Verfahren nach Anspruch 5, dadurch gekennzeichnet, dass der Abstand der Umlenkrolle (4) zum Ensimierstift (6) so gewählt wird, dass der Basiswinkel des Konver­genzdreiecks >70° beträgt.6. The method according to claim 5, characterized in that the distance of the deflecting roller (4) to the Ensimierstift (6) is selected so that the base angle of the convergence triangle is> 70 °. 7. Verfahren nach den Ansprüchen 1 bis 6, dadurch gekenn­zeichnet, dass zwischen dem Ensimierstift (6) und ei­nem Spuler (8) eine thermische Behandlung des Garnes mittels eines Heizers (7) vorgesehen ist.7. The method according to claims 1 to 6, characterized in that a thermal treatment of the yarn by means of a heater (7) is provided between the Ensimierstift (6) and a winder (8).
EP90112807A 1989-07-10 1990-07-09 Process for the preparation of flatyarn Withdrawn EP0408994A1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CH255889 1989-07-10
CH2558/89 1989-07-10

Publications (1)

Publication Number Publication Date
EP0408994A1 true EP0408994A1 (en) 1991-01-23

Family

ID=4236504

Family Applications (1)

Application Number Title Priority Date Filing Date
EP90112807A Withdrawn EP0408994A1 (en) 1989-07-10 1990-07-09 Process for the preparation of flatyarn

Country Status (1)

Country Link
EP (1) EP0408994A1 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0957187A2 (en) * 1998-05-14 1999-11-17 Ems-Inventa Ag Apparatus and process for the production of microfilament yarns with high titer regularity from thermoplastic polymers

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0176937A2 (en) * 1984-09-27 1986-04-09 Norddeutsche Faserwerke GmbH Process for manufacturing a non-textured yarn
DE3508955A1 (en) * 1985-03-13 1986-09-25 Davy McKee AG, 6000 Frankfurt Process for the high-speed stretch-spinning of synthetic yarns
WO1989008159A1 (en) * 1988-02-26 1989-09-08 Viscosuisse Sa Process and device for manufacturing highly oriented amorphous polyester filament yarns

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0176937A2 (en) * 1984-09-27 1986-04-09 Norddeutsche Faserwerke GmbH Process for manufacturing a non-textured yarn
DE3508955A1 (en) * 1985-03-13 1986-09-25 Davy McKee AG, 6000 Frankfurt Process for the high-speed stretch-spinning of synthetic yarns
WO1989008159A1 (en) * 1988-02-26 1989-09-08 Viscosuisse Sa Process and device for manufacturing highly oriented amorphous polyester filament yarns

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0957187A2 (en) * 1998-05-14 1999-11-17 Ems-Inventa Ag Apparatus and process for the production of microfilament yarns with high titer regularity from thermoplastic polymers
EP0957187A3 (en) * 1998-05-14 2000-08-16 Ems-Inventa Ag Apparatus and process for the production of microfilament yarns with high titer regularity from thermoplastic polymers

Similar Documents

Publication Publication Date Title
EP0363798B1 (en) Intermingled sewing-thread consisting of two components, and method for producing the same
CN1046321C (en) Method and apparatus for producing polyester fiber
EP2721203B1 (en) Method and device for producing a crimped multifilament thread
EP2567008B1 (en) Process and apparatus for melt-spinning, drawing and winding multiple synthetic threads
DE19653451C2 (en) Process for the production of a polyester multifilament yarn
DE2023526A1 (en) Process for the production of low-shrinkage polyester threads
EP1520065B1 (en) Method and device for melt-spinning and cutting a tow
EP1543184B1 (en) Method for producing highly stable polypropylene fibres
EP0346641B1 (en) Process for the production of uniform POY filaments
EP0173221A2 (en) High-strength polyester yarn and process for its preparation
EP0224306B1 (en) Process and apparatus for spin-stretching polyester fibers
EP1723273B1 (en) Process of making false twisted texturized monofilaments
DE2501265A1 (en) METHOD FOR MANUFACTURING TEXTURED SYNTHETIC YARN
EP0846197B1 (en) Process for producing a high-strength, high-shrinkage polyamide 66 filament yarn
EP1486592B1 (en) Apparatus for spinning and treating synthetic filaments
EP0408994A1 (en) Process for the preparation of flatyarn
EP0466868B1 (en) Process for the high-speed spinning of monofilaments, and monofilaments thus manufactured
EP0099047B1 (en) Method of continuously drawing and texturing yarns
EP0400268B1 (en) Process and apparatus for the fabrication of non-textured yarn from thermoplastic filaments, especially polyester yarn
EP0423278B1 (en) Process for the production of fine monofilaments, and a monofilament produced by this process
DE2530618A1 (en) METHOD AND DEVICE FOR MANUFACTURING A DIVERSE YARN MADE FROM SYNTHETIC, THERMOPLASTIC, POLYMERIC MATERIAL
WO2008012339A1 (en) Method for the production of a curled synthetic thread
DD240032A1 (en) METHOD FOR PRODUCING FARLY OR COMPLETELY ORIENTED FAEDS
DE2510917A1 (en) Extruded and drawn polyamide filament - is treated with oil contg water before being textured
DE2142962A1 (en) Polymeric yarns - increasing tensile strength by bonding fine filaments with a coarse filament

Legal Events

Date Code Title Description
PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

AK Designated contracting states

Kind code of ref document: A1

Designated state(s): CH DE GB IT LI

17P Request for examination filed

Effective date: 19910711

17Q First examination report despatched

Effective date: 19940607

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: THE APPLICATION IS DEEMED TO BE WITHDRAWN

18D Application deemed to be withdrawn

Effective date: 19941018