EP1002148A1 - Method and device for making industrial continuous filament yarn by entanglement, and polyester continuous filament - Google Patents

Method and device for making industrial continuous filament yarn by entanglement, and polyester continuous filament

Info

Publication number
EP1002148A1
EP1002148A1 EP98934734A EP98934734A EP1002148A1 EP 1002148 A1 EP1002148 A1 EP 1002148A1 EP 98934734 A EP98934734 A EP 98934734A EP 98934734 A EP98934734 A EP 98934734A EP 1002148 A1 EP1002148 A1 EP 1002148A1
Authority
EP
European Patent Office
Prior art keywords
polyester
continuous filament
yarn
baffle plate
nozzle
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
EP98934734A
Other languages
German (de)
French (fr)
Other versions
EP1002148B1 (en
Inventor
Istvan Csonka
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
Rhodia Filtec AG
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 Rhodia Filtec AG filed Critical Rhodia Filtec AG
Publication of EP1002148A1 publication Critical patent/EP1002148A1/en
Application granted granted Critical
Publication of EP1002148B1 publication Critical patent/EP1002148B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Classifications

    • DTEXTILES; PAPER
    • D02YARNS; MECHANICAL FINISHING OF YARNS OR ROPES; WARPING OR BEAMING
    • D02GCRIMPING OR CURLING FIBRES, FILAMENTS, THREADS, OR YARNS; YARNS OR THREADS
    • D02G1/00Producing crimped or curled fibres, filaments, yarns, or threads, giving them latent characteristics
    • D02G1/16Producing crimped or curled fibres, filaments, yarns, or threads, giving them latent characteristics using jets or streams of turbulent gases, e.g. air, steam
    • DTEXTILES; PAPER
    • D02YARNS; MECHANICAL FINISHING OF YARNS OR ROPES; WARPING OR BEAMING
    • D02GCRIMPING OR CURLING FIBRES, FILAMENTS, THREADS, OR YARNS; YARNS OR THREADS
    • D02G1/00Producing crimped or curled fibres, filaments, yarns, or threads, giving them latent characteristics
    • D02G1/16Producing crimped or curled fibres, filaments, yarns, or threads, giving them latent characteristics using jets or streams of turbulent gases, e.g. air, steam
    • D02G1/161Producing crimped or curled fibres, filaments, yarns, or threads, giving them latent characteristics using jets or streams of turbulent gases, e.g. air, steam yarn crimping air jets
    • DTEXTILES; PAPER
    • D02YARNS; MECHANICAL FINISHING OF YARNS OR ROPES; WARPING OR BEAMING
    • D02JFINISHING OR DRESSING OF FILAMENTS, YARNS, THREADS, CORDS, ROPES OR THE LIKE
    • D02J1/00Modifying the structure or properties resulting from a particular structure; Modifying, retaining, or restoring the physical form or cross-sectional shape, e.g. by use of dies or squeeze rollers
    • D02J1/08Interlacing constituent filaments without breakage thereof, e.g. by use of turbulent air streams
    • YGENERAL 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
    • Y10TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10TTECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T428/00Stock material or miscellaneous articles
    • Y10T428/29Coated or structually defined flake, particle, cell, strand, strand portion, rod, filament, macroscopic fiber or mass thereof
    • Y10T428/2913Rod, strand, filament or fiber
    • YGENERAL 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
    • Y10TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10TTECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T428/00Stock material or miscellaneous articles
    • Y10T428/29Coated or structually defined flake, particle, cell, strand, strand portion, rod, filament, macroscopic fiber or mass thereof
    • Y10T428/2913Rod, strand, filament or fiber
    • Y10T428/2933Coated or with bond, impregnation or core
    • Y10T428/2964Artificial fiber or filament
    • Y10T428/2967Synthetic resin or polymer
    • Y10T428/2969Polyamide, polyimide or polyester

Definitions

  • the invention relates to a process for the production of technical filament yarns by intermingling a polyester multifilament at elevated temperature, under a thread tension of less than 140 cN, in an interlaced air nozzle, consisting of a nozzle body with a perforated plate and a baffle plate, and a device for carrying it out of the process and a technical filament yarn.
  • Multifilament yarns are intermingled during the spinning process in order to maintain interweaving of the individual filament fibrils and to avoid thread spreading during further processing.
  • the interlacing takes place selectively, enables the individual filaments in the fibril bandage to be held together better and the yarn to be processed further.
  • Methods for interlacing the multifilament yarns are known, the knot formation taking place in a swirl channel or between two plates by means of an air jet.
  • the number of nodes can be controlled both via the pressure and the speed of the swirling air.
  • oligomers are always formed, which can be deposited on the surface of the multifilament yarn by blowing on the cold baffle plate of the intermingling nozzles. These hard, often crust-like deposits can cause blockages in the air supply and in the drainage channels and damage to the fibrils, as well as inadequate, unstable and irregularly arranged nodes.
  • Winding thread tensile strength of less than 100 cN are marked, in a total titer range of 500 to 2000 dtex tend to form particularly strong
  • 0 148 402 describes a commercially available, open
  • the nozzle can be mechanically and chemically cleaned in a complex process.
  • hot intermingling air was used for the production of such multifilament yarns.
  • This so-called hot air swirling becomes cold Compressed air heated up to approximately 290 ° C by an air heater installed in the compressed air system. Improvements have been achieved which, however, are unsatisfactory, particularly because of the irregular arrangement of the nodes and the high energy consumption. Hot air swirling has the further disadvantage that a complex control system questions the economic viability of such a method.
  • the object of the invention is to provide a simplified method which enables a better knot distribution and allows an extended nozzle service life.
  • Another object is to provide a swirling device that reduces the energy consumption of the process during swirling.
  • Yet another task is to provide an industrial yarn that is more suitable for weaving use.
  • Weaving is primarily used for fabrics for tents, piaches, membrane structures, awnings, projection walls and geotextiles, which are usually coated.
  • the object is achieved according to the invention in that the heat is transferred directly to the polyester multifilament and the air via the nozzle body to a highly thermally conductive metal block which is connected directly to the baffle plate and in which a bore is provided for receiving a radiator. This will improve scattering and node distribution, as well as an enormous energy saving of 85%.
  • the swirl nozzle as a cold point in the spinning process is eliminated.
  • baffle plate it is expedient to heat the baffle plate to a constant temperature between 150 and 180 ° C., in particular 150 ° to 170 ° C., preferably 160 ° C.
  • a temperature below 150 ° C has the disadvantage of increasing deposits; at a temperature above 180 ° C the swirl properties do not improve any further.
  • the number of knots per meter is either too low or too high.
  • the device for performing the method consists of a swirl nozzle with a nozzle body, a perforated plate and an impact plate.
  • the baffle plate is expediently connected directly and flush to a highly thermally conductive metal block, for example made of aluminum, in which a bore is provided for receiving a radiator. Electrical resistance heaters or any other space-saving heating are suitable as radiators.
  • the direct contact between the baffle plate and the metal block is essential.
  • a polyester filament yarn produced by the method according to the invention with a winding tension of less than 140 cN, in particular less than 100 cN and with a total titer of 500 - 2000 dtex, has a strength of at least 70 cN / tex and an elongation at break of less than 24%, an increased knot resistance of more than 80% and a distance between 2 knots of more than 4.0 cm.
  • the polyester filament is ideally suited for the production of coated fabrics for industrial purposes.
  • Fig. 1 shows a swirl nozzle according to the invention in side view.
  • a nozzle body is designated by the reference numeral 1.
  • the nozzle body 1 is connected to a baffle plate 3 via a perforated plate 2.
  • Nozzle body 1 is a compressed air line 4 via a
  • Thread guide 6 'guaranteed On the baffle plate 3, a metal body 8 is provided flush with
  • the metal body 8 is provided with a bore 7 for receiving a radiator.
  • the functioning of the device is explained in the exemplary embodiments.
  • the nozzle described in FIG. 1 was pressurized in a known manner via the compressed air line 4 with commercially available, cold compressed air of 1.8 bar.
  • a constant temperature level of 160 ° C at the baffle plate 3 could be maintained for 80 hours with the radiator with a heating power of 50W / 50V.
  • Table 1 shows the results achieved in comparison with the known hot air swirling.
  • the table shows that after an operating time of 80 hours, a swirl of 12.1 knots / m (target value: 12.0 ⁇ 1.5) with a scatter of 0.36 and a swirl stability of 87.1% become.
  • the swirl nozzle according to the invention was used for 96 hours with a baffle plate temperature of 160 ° C.
  • the standard air pressure of 2.8 bar corresponds to that of hot air swirling.
  • Table 2 shows the results achieved in comparison with the known hot air swirling.
  • Thread measured according to the needle stitch method with a dynamic load of 0.5 cN / tex and 1000 load changes per minute .
  • the hot nozzle swirl brings an equally good swirl value, good knot resistance and a significantly better knot distribution.
  • the smallest distance between 2 knots increased by at least about 15% from 3.4 to 4 cm.
  • the serimetric properties and thread cleanliness remained unchanged.
  • the method according to the invention is particularly suitable for producing high-strength industrial yarn for fabrics for tents, piaches and geotextiles, which are generally coated.

Landscapes

  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • Textile Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Yarns And Mechanical Finishing Of Yarns Or Ropes (AREA)
  • Polyesters Or Polycarbonates (AREA)
  • Artificial Filaments (AREA)
  • Spinning Methods And Devices For Manufacturing Artificial Fibers (AREA)

Abstract

The invention concerns a method for making industrial continuous filament yarn by entangling a polyester multifilament yarn at high temperature, under yarn traction force less than 140 cN. By means of a tangling cop tube consisting of a body (1) provided with a perforated plate (2) and a deflection plate (3), heat is directly transmitted to the polyester filament and the air passing through the cop tube body (1) is directly transmitted to a metal block (8) with high thermal conductivity directly connected to the deflection plate (3). In the device for implementing said method, the deflection plate (3) is directly connected to a metal block (8) with high thermal conductivity, wherein a bore (7) is provided for housing a heating element. The polyester continuous filament designed for spinning applications, with a yarn count of 500-2000 dtex, has a resistance of at least 70 cN/tex for a breaking elongation less than 24 %, and a knot strength higher than 80 % and a spacing between 2 knots more than 4.0 cm.

Description

Verfahren und Vorrichtung zur Herstellung von technischenProcess and device for the production of technical
Filamentgarnen durch Verwirbeln sowie einFilament yarns by swirling as well
PolyesterfilamentgamPolyester filament yarn
Die Erfindung betrifft ein Verfahren zur Herstellung von technischen Filamentgarnen durch Verwirbeln eines Polyestermultifilaments bei erhöhter Temperatur, unter einer Fadenzugkraft von weniger als 140 cN, in einer mittels Luft beaufschlagten Verwirbelungsduse, bestehend aus einem Düsenkörper mit einer Lochplatte und einer Prallplatte, sowie eine Vorrichtung zur Durchführung des Verfahrens und ein technisches Filamentgam.The invention relates to a process for the production of technical filament yarns by intermingling a polyester multifilament at elevated temperature, under a thread tension of less than 140 cN, in an interlaced air nozzle, consisting of a nozzle body with a perforated plate and a baffle plate, and a device for carrying it out of the process and a technical filament yarn.
Multifilamentgarne werden beim Spinnprozess verwirbelt, um eine Verflechtung der einzelne Filamentfibrillen zu erhalten und um Fadenspreizungen beim Weiterverarbeiten zu vermeiden. Die Verflechtung geschieht punktuell, ermöglicht ein verbessertes Zusammenhalten der Einzelfilamente im Fibrillenverband und eine bessere Weiterverarbeitbarkeit des Garns .Multifilament yarns are intermingled during the spinning process in order to maintain interweaving of the individual filament fibrils and to avoid thread spreading during further processing. The interlacing takes place selectively, enables the individual filaments in the fibril bandage to be held together better and the yarn to be processed further.
Verfahren zur Verflechtung der Multifilamentgarne sind bekannt, wobei die Knotenbildung in einem Verwirbelungskanal oder zwischen zwei Platten mittels eines Luftstrahles stattfindet. Die Knotenzahl kann sowohl über den Druck als auch über die Geschwindigkeit der Verwirbelungsluft gesteuert werden.Methods for interlacing the multifilament yarns are known, the knot formation taking place in a swirl channel or between two plates by means of an air jet. The number of nodes can can be controlled both via the pressure and the speed of the swirling air.
Während der Schmelzextrusion der Polymere beim Spinnprozess bilden sich immer Oligomere, die sich von der Oberfläche des Multifilamentgarnes durch das Anblasen an der kalten Prallplatte der Verwirbelungsdüsen ablagern können. Diese harten, oft krustenartigen Ablagerungen können Verstopfungen in den Luftzufuhr und in den Abzugskanälen sowie Fibrillenbeschadigungen verursachen, sowie ungenügende, unstabile und unregelmässig angeordnete Knoten erzeugen.During the melt extrusion of the polymers during the spinning process, oligomers are always formed, which can be deposited on the surface of the multifilament yarn by blowing on the cold baffle plate of the intermingling nozzles. These hard, often crust-like deposits can cause blockages in the air supply and in the drainage channels and damage to the fibrils, as well as inadequate, unstable and irregularly arranged nodes.
Technische Filamentgarne aus Polyester, insbesondere solche, die vom Herstellungsverfahren her durch niedrigeTechnical filament yarns made of polyester, in particular those which are low in manufacturing processes
Aufwickelfadenzugkraft von weniger als 100 cN gekennzeichnet sind, in einem Gesamttiterbereich von 500 bis 2000 dtex neigen besonders stark zur Bildung vonWinding thread tensile strength of less than 100 cN are marked, in a total titer range of 500 to 2000 dtex tend to form particularly strong
Ablagerungen in der Verwirbelungsduse. Mit der bekannten Kaltluftverwirbelung, wie sie beispielsweise die EP-A-Deposits in the swirl nozzle. With the well-known cold air swirling, as used for example in EP-A-
0 148 402 beschreibt, kann eine handelsübliche, offene0 148 402 describes a commercially available, open
Verwirbelungsduse mit Loch- und Prallplatte bis zu max.Swirl nozzle with perforated and baffle plate up to max.
24 Stunden in Betrieb gehalten werden. Danach muss die24 hours in operation. Then the
Düse in einem aufwendigen Verfahren mechanisch und chemisch gereinigt werden.The nozzle can be mechanically and chemically cleaned in a complex process.
Um die Düsenstandzeit zu verlängern und eine bessere Knotenbildung, Knotenverteilung und Verwirbelungsstabilität zu erzielen, wurde heisse Verwirbelungsluft für die Herstellung solcher Multifilamentgarne verwendet. Bei dieser sogenannten Heissluftverwirbelung wird kalte Druckluft durch einem im Druckluf system eingebauten Lufterhitzer bis zu etwa 290 °C aufgeheizt. Es wurden Verbesserungen erreicht, die jedoch, insbesondere wegen der unregelmässigen Knotenanordnung sowie des hohen Energieaufwands nicht zufriedenstellend sind. Die Heissluftverwirbelung hat den weiteren Nachteil, dass ein aufwendiges Regelsystem die Wirtschaftlichkeit eines solchen Verfahrens in Frage stellt.In order to extend the nozzle service life and to achieve better knot formation, knot distribution and intermingling stability, hot intermingling air was used for the production of such multifilament yarns. This so-called hot air swirling becomes cold Compressed air heated up to approximately 290 ° C by an air heater installed in the compressed air system. Improvements have been achieved which, however, are unsatisfactory, particularly because of the irregular arrangement of the nodes and the high energy consumption. Hot air swirling has the further disadvantage that a complex control system questions the economic viability of such a method.
Aufgabe der Erfindung ist es, ein vereinfachtes Verfahren zu schaffen, das eine bessere Knotenverteilung ermöglicht und verlängerte Düsenstandzeit erlaubt.The object of the invention is to provide a simplified method which enables a better knot distribution and allows an extended nozzle service life.
Eine weitere Aufgabe ist es, eine Verwirbelungsvorrich- tung zur Verfügung zu stellen, die den Energieverbrauch des Verfahrens bei der Verwirbelung reduziert.Another object is to provide a swirling device that reduces the energy consumption of the process during swirling.
Eine noch weitere Aufgabe ist es, ein Industriegarn zur Verfügung zu stellen, das für den Webereieinsatz besser geeignet ist. Als Webereieinsatz sind vor allem Gewebe für Zelte, Piachen, Membranbauten, Markisen, Projektionswände und Geotextilien gemeint, die in der Regel eine Beschichtung erfahren.Yet another task is to provide an industrial yarn that is more suitable for weaving use. Weaving is primarily used for fabrics for tents, piaches, membrane structures, awnings, projection walls and geotextiles, which are usually coated.
Die Aufgabe wird erfindungsgemäss dadurch gelöst, dass die Wärme auf das Polyestermultifilament und die Luft über den Düsenkörper auf einen unmittelbar mit der Prallplatte verbundenen hochwärmeleitfähigen Metallblock direkt übertragen wird, in welchem eine Bohrung für die Aufnahme eines Heizkörpers vorgesehen ist. Es wird dadurch eine verbesserte Streuung und Knotenverteilung, sowie eine enorme Einsparung an Energie von 85 % erreicht. Die Verwirbelungsduse als kalter Punkt im Spinnverfahren wird eliminiert.The object is achieved according to the invention in that the heat is transferred directly to the polyester multifilament and the air via the nozzle body to a highly thermally conductive metal block which is connected directly to the baffle plate and in which a bore is provided for receiving a radiator. This will improve scattering and node distribution, as well as an enormous energy saving of 85%. The swirl nozzle as a cold point in the spinning process is eliminated.
Es ist zweckmässig, die Prallplatte auf eine konstante Temperatur zwischen 150 und 180°C, insbesondere 150° bis 170°C, bevorzugt 160°C zu beheizen. Eine Temperatur unter 150°C hat den Nachteil der zunehmenden Ablagerungen; bei einer Temperatur über 180°C verbessern sich die Verwirbelungseigenschaften nicht weiter.It is expedient to heat the baffle plate to a constant temperature between 150 and 180 ° C., in particular 150 ° to 170 ° C., preferably 160 ° C. A temperature below 150 ° C has the disadvantage of increasing deposits; at a temperature above 180 ° C the swirl properties do not improve any further.
Ein Verwirbelungsdruck zwischen 1,5 bis 3,0 bar, insbesondere 1,8 bzw. 2,8 bar, hat sich als zweckmässig erwiesen. Ein Druck unter 1,5 bar und über 3,0 bar beeinflusst negativ die optimale Knotenbildung. Es entsteht entweder eine zu tiefe oder zu hohe Anzahl von Knoten pro Meter.A swirl pressure between 1.5 and 3.0 bar, in particular 1.8 or 2.8 bar, has proven to be expedient. A pressure below 1.5 bar and above 3.0 bar negatively influences the optimal knot formation. The number of knots per meter is either too low or too high.
Die Vorrichtung zur Durchführung des Verfahrens besteht aus einer Verwirbelungsduse mit einem Düsenkörper, einer Lochplatte und einer Prallplatte. Die Prallplatte ist zweckmässig direkt und bündig mit einem hochwärmeleitfähigen Metallblock, beispielsweise aus Aluminium verbunden, in welchem eine Bohrung für die Aufnahme eines Heizkörpers vorgesehen ist. Als Heizkörper sind elektrische Widerstandsheizungen oder jede andere raumsparende Beheizungen geeignet. Wesentlich ist der direkte Kontakt zwischen der Prallplatte und dem Metallblock. Ein nach dem erfindungsgemässen Verfahren hergestelltes Polyester Filamentgam, mit einer Aufwickelfadenzugkraft von weniger als 140 cN, insbesondere weniger als 100 cN und mit einem Gesamttiter von 500 - 2000 dtex, weist neben einer Festigkeit von mindestens 70 cN/tex, bei einer Bruchdehnung von weniger als 24 %, eine erhöhte Knotenbeständigkeit von grösser als 80 % und einem Abstand zwischen 2 Knoten von grösser als 4,0 cm auf. Das Polyester Filamentga ist in hervorragender Weise zur Herstellung von beschichteten Geweben für industrielle Zwecke geeignet .The device for performing the method consists of a swirl nozzle with a nozzle body, a perforated plate and an impact plate. The baffle plate is expediently connected directly and flush to a highly thermally conductive metal block, for example made of aluminum, in which a bore is provided for receiving a radiator. Electrical resistance heaters or any other space-saving heating are suitable as radiators. The direct contact between the baffle plate and the metal block is essential. A polyester filament yarn produced by the method according to the invention, with a winding tension of less than 140 cN, in particular less than 100 cN and with a total titer of 500 - 2000 dtex, has a strength of at least 70 cN / tex and an elongation at break of less than 24%, an increased knot resistance of more than 80% and a distance between 2 knots of more than 4.0 cm. The polyester filament is ideally suited for the production of coated fabrics for industrial purposes.
Das erfindungsgemässe Verfahren soll anhand einer Zeichnung erläutert werden. Es zeigen:The method according to the invention will be explained with reference to a drawing. Show it:
Fig. 1 eine erfindungsgemässe Verwirbelungsduse in Seitenansicht .Fig. 1 shows a swirl nozzle according to the invention in side view.
In der einzigen Fig. 1 ist ein Düsenkörper mit dem Bezugszeichen 1 bezeichnet. Der Düsenkörper 1 ist über eine Lochplatte 2 mit einer Prallplatte 3 verbunden. AmIn the single Fig. 1, a nozzle body is designated by the reference numeral 1. The nozzle body 1 is connected to a baffle plate 3 via a perforated plate 2. At the
Düsenkörper 1 ist eine Druckluftleitung 4 über eineNozzle body 1 is a compressed air line 4 via a
Halterung 5 angebracht . Zwischen der Lochplatte 2 und derBracket 5 attached. Between the perforated plate 2 and the
Prallplatte 3 ist ein Spalt vorgesehen, der den Durchgang für einen Faden F von einem Fadenführer 6 zu einemBaffle plate 3, a gap is provided, the passage for a thread F from a thread guide 6 to a
Fadenführer 6' gewährleistet. An der Prallplatte 3 ist bündig ein Metallkörper 8 vorgesehen, der mitThread guide 6 'guaranteed. On the baffle plate 3, a metal body 8 is provided flush with
Montageschrauben 9, 9' an der Lochplatte 2 befestigt ist.Mounting screws 9, 9 'is attached to the perforated plate 2.
Der Metallkörper 8 ist mit einer Bohrung 7 zur Aufnahme eines Heizkörpers vorgesehen. Die Funktionsweise der Vorrichtung wird in den Ausführungsbeispielen erläutert.The metal body 8 is provided with a bore 7 for receiving a radiator. The functioning of the device is explained in the exemplary embodiments.
Ausführungsbeispiele 1Embodiments 1
Titer: dtex 11 OOf192 ; Aufwickelkraft 60 cNTiter: dtex 11 OOf192; Winding force 60 cN
Die nach Fig. 1 beschriebene Düse wurde in bekannter Weise über die Druckluftleitung 4 mit handelsüblicher, kalter Druckluft von 1,8 bar beaufschlagt. Während 80 Stunden konnte mit der Heizkörper mit einer Heizleistung von 50W/50V ein konstantes Temperaturniveau von 160 °C an der Prallplatte 3 eingehalten werden. Tabelle 1 zeigt die erreichten Resultate im Vergleich mit der bekannten Heissluftverwirbelung.The nozzle described in FIG. 1 was pressurized in a known manner via the compressed air line 4 with commercially available, cold compressed air of 1.8 bar. A constant temperature level of 160 ° C at the baffle plate 3 could be maintained for 80 hours with the radiator with a heating power of 50W / 50V. Table 1 shows the results achieved in comparison with the known hot air swirling.
Tabelle 1Table 1
In der Tabelle bedeuten : In the table mean:
- h : Stunden- h: hours
- Kn/m : Anzahl Knoten pro 1 m Faden, Mittelwert aus 50 Messwerten pro Wickel, gemessen nach der- Kn / m: number of knots per 1 m thread, average of 50 measured values per winding, measured according to the
Nadelstichmethode .Needle stitch method.
- Verwirbelungsstabilität = Anzahl Knoten pro 1 m Faden, gemessen nach der Nadelstichmethode, bei einer dynamischen Beanspruchung von 0,5 cN/dtex und 1000 Lastwechsel pro Minute.- Swirl stability = number of knots per 1 m of thread, measured according to the needle stitch method, with a dynamic load of 0.5 cN / dtex and 1000 load changes per minute.
Aus der Tabelle ist ersichtlich, dass nach einer Einsatzzeit von 80-Stunden eine Verwirbelung von 12,1 Knoten/m (Sollwert: 12,0 ± 1,5) bei einer Streuung von 0,36 und eine Verwirbelungsstabilität von 87,1 % erreicht werden.The table shows that after an operating time of 80 hours, a swirl of 12.1 knots / m (target value: 12.0 ± 1.5) with a scatter of 0.36 and a swirl stability of 87.1% become.
Ausführungsbeispiele 2Embodiments 2
Titer: dtex 1100f192, Aufwickelkraft 140 cNTiter: dtex 1100f192, winding force 140 cN
Die erfindungsgemässe Verwirbelungsduse wurden während 96 Stunden mit einer Prallplattentemperatur von 160°C eingesetzt. Der Standardluftdruck von 2,8 bar entspricht dem der Heissluftverwirbelung.The swirl nozzle according to the invention was used for 96 hours with a baffle plate temperature of 160 ° C. The standard air pressure of 2.8 bar corresponds to that of hot air swirling.
Tabelle 2 zeigt die erreichten Resultate im Vergleich mit der bekannten Heissluftverwirbelung. Tabelle 2Table 2 shows the results achieved in comparison with the known hot air swirling. Table 2
- Ft : Reissfestigkeit in cN/tex - Dt : Bruchdehnung bei Höchstzugkraft in %- Ft: tensile strength in cN / tex - Dt: elongation at break at maximum tensile strength in%
- Kn/m : Anzahl Knoten pro 1 m Faden, Mittelwert aus- Kn / m: number of knots per 1 m thread, mean value off
50 Messwerten pro Wickel, gemessen nach der Nadelstichmethode50 measured values per winding, measured according to the needle stitch method
- koh : Kohärenzlänge, Abstand zwischen zwei Knoten in cm- koh: coherence length, distance between two nodes in cm
- s : Streuung gibt die Kohärenzlängenstreuung an,- s: scatter indicates the coherence length scatter,
- Verwirbelungsstabilität : Anzahl Knoten pro 1 m- Swirl stability: number of knots per 1 m
Faden, gemessen nach der Nadelstichmethode bei einer dynamischen Beanspruchung von 0,5 cN/tex und 1000 Lastwechsel pro Minute .Thread, measured according to the needle stitch method with a dynamic load of 0.5 cN / tex and 1000 load changes per minute .
Im Vergleich Stand der Technik/Heissdüse wurde eine Verwirbelung von 11,3 bzw. 10,2 Kn/m, eine Kohärenzlänge von 7,8 bzw. 8,8 cm bei einer Streuung von 3,2 bzw. 3,6 und eine Verwirbelungsstabilität von 86,7 bzw. 83,8 erreicht. Die serimetrischen Eigenschaften und die Fadensauberkeit blieben unverändert .In the comparison of the prior art / hot nozzle, a turbulence of 11.3 or 10.2 Kn / m, a coherence length of 7.8 or 8.8 cm with a scatter of 3.2 or 3.6 and a turbulence stability were found of 86.7 and 83.8 respectively. The serimetric properties and thread cleanliness remained unchanged.
Energieverbrauch:Power consumption:
Heissluftverwirbelung: 1,6 kWhHot air swirling: 1.6 kWh
Heissdüsenverwirbelung: 0,24 kWhHot nozzle swirling: 0.24 kWh
Energieeinsparung: 1,576 kWh oder etwa 85 %Energy saving: 1.576 kWh or about 85%
Die Heissdüsenverwirbelung bringt im Vergleich mit der bekannten Heissluftverwirbelung bei gleicher Düsen- einsatzzeit einen gleich guten Verwirbelungswert, eine gute Knotenbeständigkeit und eine wesentlich bessere Knotenverteilung. Der kleinste Abstand zwischen 2 Knoten vergrösserte sich um wenigstens etwa 15 % von 3,4 auf 4 cm. Die serimetrischen Eigenschaften und die Fadensauberkeit blieben unverändert.In comparison with the known hot air swirling with the same nozzle operating time, the hot nozzle swirl brings an equally good swirl value, good knot resistance and a significantly better knot distribution. The smallest distance between 2 knots increased by at least about 15% from 3.4 to 4 cm. The serimetric properties and thread cleanliness remained unchanged.
Das erfindungsgemässe Verfahren ist besonders geeignet zur Herstellung von hochfestem Industriegarn für Gewebe für Zelte, Piachen und Geotextilien, die in der Regel beschichtet werden. The method according to the invention is particularly suitable for producing high-strength industrial yarn for fabrics for tents, piaches and geotextiles, which are generally coated.

Claims

Patentansprüche claims
1. Verfahren zur Herstellung von technischen Filamentgarnen durch Verwirbeln eines Polyestermultifilaments bei erhöhter Temperatur, unter einer Fadenzugkraft von weniger als 140 cN, in einer mittels Luft beaufschlagten Verwirbelungsduse, bestehend aus einem Düsenkörper (1) mit einer Lochplatte (2) und einer Prallplatte (3), dadurch gekennzeichnet, dass die Wärme auf das Polyestermultifilament und die Luft über den Düsenkörper (1) auf einen unmittelbar mit der Prallplatte (3) verbundenen hochwärmeleitfähigen Metallblock (8) direkt übertragen wird, in welchem eine Bohrung (7) für die Aufnahme eines Heizkörpers vorgesehen ist.1.Procedure for the production of technical filament yarns by swirling a polyester multifilament at elevated temperature, with a thread tension of less than 140 cN, in a swirling nozzle to which air is applied, consisting of a nozzle body (1) with a perforated plate (2) and an impact plate (3 ), characterized in that the heat is transferred directly to the polyester multifilament and the air via the nozzle body (1) to a highly thermally conductive metal block (8) connected directly to the baffle plate (3), in which a bore (7) for receiving a Radiator is provided.
2. Verfahren nach Anspruch 1 , dadurch gekennzeichnet , dass die Prallplatte (3) auf eine konstante Temperatur zwischen 150 und 180°C beheizt wird.2. The method according to claim 1, characterized in that the baffle plate (3) is heated to a constant temperature between 150 and 180 ° C.
3. Verfahren nach Anspruch 1, dadurch gekennzeichnet, dass der Verwirbelungsdruck 1,5 bis 3,0 bar beträgt.3. The method according to claim 1, characterized in that the swirling pressure is 1.5 to 3.0 bar.
4. Vorrichtung zur Durchführung des Verfahrens nach den Ansprüchen 1-3, bestehend aus einer Verwirbelungsduse mit einem Düsenkörper (1), einer Lochplatte (2) und einer Prallplatte (3) , dadurch gekennzeichnet, dass die Prallplatte (3) direkt und bündig mit einem hochwärmeleitfähigen Metallblock (8) verbunden ist, in welchem eine Bohrung (7) für die Aufnahme eines Heizkörpers vorgesehen ist . 4. Device for performing the method according to claims 1-3, consisting of a swirl nozzle with a nozzle body (1), a perforated plate (2) and a baffle plate (3), characterized in that the baffle plate (3) directly and flush with a highly thermally conductive metal block (8) is connected, in which a bore (7) is provided for receiving a radiator.
5. Polyester Filamentgam mit einen Gesamttiter von 500 - 2000 dtex, gekennzeichnet durch eine Festigkeit von mindestens 70 cN/tex bei einer Bruchdehnung von weniger als 24 %, eine Knotenbeständigkeit von grösser als 80 % und einem Abstand zwischen 2 Knoten von grösser als 4,0 cm. 5. Polyester filament yarn with a total titer of 500-2000 dtex, characterized by a strength of at least 70 cN / tex with an elongation at break of less than 24%, a knot resistance of more than 80% and a distance between 2 knots of more than 4, 0 cm.
EP98934734A 1997-08-06 1998-08-04 Method and device for making industrial continuous filament yarn by entanglement, and polyester continuous filament Expired - Lifetime EP1002148B1 (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
CH185197 1997-08-06
CH185197 1997-08-06
PCT/CH1998/000330 WO1999007930A1 (en) 1997-08-06 1998-08-04 Method and device for making industrial continuous filament yarn by entanglement, and polyester continuous filament

Publications (2)

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EP1002148A1 true EP1002148A1 (en) 2000-05-24
EP1002148B1 EP1002148B1 (en) 2002-06-12

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US (2) US6365091B1 (en)
EP (1) EP1002148B1 (en)
JP (1) JP2001512794A (en)
KR (1) KR100469602B1 (en)
CN (1) CN1091179C (en)
AT (1) ATE219174T1 (en)
BR (1) BR9811820A (en)
DE (1) DE59804444D1 (en)
DK (1) DK1002148T3 (en)
ES (1) ES2178236T3 (en)
PT (1) PT1002148E (en)
WO (1) WO1999007930A1 (en)

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Publication number Priority date Publication date Assignee Title
DK1002148T3 (en) * 1997-08-06 2002-10-14 Rhodia Industrial Yarns Ag Method and apparatus for making technical filament yarns by entanglement and a polyester filament yarn
EP1541727A1 (en) * 2003-12-05 2005-06-15 Schärer Schweiter Mettler AG Reduction of the pressure in the texturing nozzle and yarn texturing

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US363291A (en) * 1887-05-17 Dental engine
US3638291A (en) * 1970-10-01 1972-02-01 Du Pont Yarn-treating jet
EP0485871B1 (en) * 1990-11-10 1995-02-15 Barmag Ag Method and apparatus for combining differently colored threads into a multi-colored yarn
DE4323131A1 (en) * 1993-07-10 1995-01-12 Temco Textilmaschkomponent Device for interlacing filaments with a plurality of interlacing nozzles
DE19548361A1 (en) * 1995-02-16 1996-08-22 Rieter Ag Maschf Yarn texturising jet assembly
DK1002148T3 (en) * 1997-08-06 2002-10-14 Rhodia Industrial Yarns Ag Method and apparatus for making technical filament yarns by entanglement and a polyester filament yarn
JP3782902B2 (en) * 1999-06-24 2006-06-07 帝人ファイバー株式会社 Method for producing high-strength monofilament with improved surface properties

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Title
See references of WO9907930A1 *

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EP1002148B1 (en) 2002-06-12
US20020101011A1 (en) 2002-08-01
KR100469602B1 (en) 2005-02-02
ES2178236T3 (en) 2002-12-16
PT1002148E (en) 2002-11-29
ATE219174T1 (en) 2002-06-15
CN1266466A (en) 2000-09-13
DK1002148T3 (en) 2002-10-14
KR20010022589A (en) 2001-03-26
US6365091B1 (en) 2002-04-02
US6465093B2 (en) 2002-10-15
WO1999007930A1 (en) 1999-02-18
CN1091179C (en) 2002-09-18
JP2001512794A (en) 2001-08-28
DE59804444D1 (en) 2002-07-18
BR9811820A (en) 2000-08-15

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