EP1727927A1 - Method for coating a yarn - Google Patents

Method for coating a yarn

Info

Publication number
EP1727927A1
EP1727927A1 EP05716016A EP05716016A EP1727927A1 EP 1727927 A1 EP1727927 A1 EP 1727927A1 EP 05716016 A EP05716016 A EP 05716016A EP 05716016 A EP05716016 A EP 05716016A EP 1727927 A1 EP1727927 A1 EP 1727927A1
Authority
EP
European Patent Office
Prior art keywords
yarn
coating
coated
coating agent
yarns
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
EP05716016A
Other languages
German (de)
French (fr)
Other versions
EP1727927B1 (en
Inventor
Freddy Marinus Johannes Tijink
Henricus Hubertus Wilhelmus Feijen
Ronald Stiefelhagen
Christian Vieth
Johannes Petrus Maria Dortmans
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.)
Diolen Industrial Fibers BV
Original Assignee
Diolen Industrial Fibers BV
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 Diolen Industrial Fibers BV filed Critical Diolen Industrial Fibers BV
Priority to EP05716016A priority Critical patent/EP1727927B1/en
Publication of EP1727927A1 publication Critical patent/EP1727927A1/en
Application granted granted Critical
Publication of EP1727927B1 publication Critical patent/EP1727927B1/en
Not-in-force legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Classifications

    • D—TEXTILES; PAPER
    • D02—YARNS; MECHANICAL FINISHING OF YARNS OR ROPES; WARPING OR BEAMING
    • D02G—CRIMPING OR CURLING FIBRES, FILAMENTS, THREADS, OR YARNS; YARNS OR THREADS
    • D02G3/00—Yarns or threads, e.g. fancy yarns; Processes or apparatus for the production thereof, not otherwise provided for
    • D02G3/22—Yarns or threads characterised by constructional features, e.g. blending, filament/fibre
    • D02G3/40—Yarns in which fibres are united by adhesives; Impregnated yarns or threads
    • D02G3/404—Yarns or threads coated with polymeric solutions
    • 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
    • Y10T428/2933—Coated or with bond, impregnation or core

Definitions

  • the present invention is directed to a method of coating a yarn comprising the steps of first contacting the yarn with a dispersion of the coating agent in a dispersing agent or with the coating agent in molten form, optionally excess dispersion or melt from the yarn is stripped off, and then the coating is formed on the yarn, this being done in the case of dispersion by at least partially removing the dispersant by means of heating, and the yarn coated in this way is then cooled and wound up.
  • US-A-3,407,092 describes a coated yarn obtained by passing a nylon yarn through an emulsion bath containing an acrylate-based copolymer in aqueous emulsion and then at about 93 ° C for two minutes long drying. This yarn is then cooled and twisted.
  • the coating agent applied to the yarns of US Pat. No. 3,407,092 is approximately 1 to 10% by weight.
  • the coating or coating of fabrics such as woven fabrics, knitted fabrics, paper and nonwovens is also known.
  • this type of coating is understood to mean the application of a film-like coating made of natural or synthetic materials, as a coating slip, to the fabric or the carrier web the purpose of making them suitable for special requirements or to give them new properties, e.g. for synthetic leather, covers, tarpaulins, etc.
  • the flat structure being the first Line is responsible for the mechanical strength of the end product, while the applied coating, the behavior of the material when used against external influences such as breathability, resistance to kinking and scratching, light radiation, chemical resistance, flame retardancy, water, heat, as well as the appearance, such as printing , Coloring, grain, and the particular usability determined.
  • the coating is applied to the carrier web as a uniformly thick layer using a so-called doctor knife.
  • the thickness of the coating depends on the intended use and can be fractions of a millimeter or several millimeters. Such a form of application is known per se to the person skilled in the art and need not be described further here.
  • the process of coating flat structures can therefore consist of several stages, in the course of which relatively large quantities of coating agents are often used.
  • there is usually also the manufacturing step of the flat structure itself for example the production of flat fabrics from yarns, etc. It would therefore be desirable if at least parts of the coating process could already be carried out in upstream process stages, for example before the weaving step.
  • Coated yarns could then be processed directly into coated flat fabrics, which only lead to a uniform and permanent coating of the fabric using heat and / or pressure, for example by hot pressing.
  • the yarns obtained by direct coating often have insufficient uniformity, both in terms of the amount of coating and in terms of the shape of the coated yarns thus obtained.
  • Yarns which are not uniformly round or flattened are often obtained which are difficult to process further, for example on weaving machines. Naturally, this problem becomes more pronounced when it comes to applying large quantities of coating agents.
  • the speed at which the coating is applied to the yarns is also problematic, since on the one hand the application is uneven and / or too low at high speeds, whereas the process itself becomes uneconomical at lower speeds.
  • Speed in the sense of the present invention is to be understood to mean the stretch of yarn that comes into contact with the coating agent within a unit of time.
  • the object of the present invention is therefore to provide a further method for coating yarns that at least reduces the problems described above.
  • the yarn which is still relatively hot due to the formation of the coating by means of heat or through contact with the coating agent in molten form, is thus additionally cooled in addition to the cooling by ambient air, a water-cooled tangel nozzle having proven particularly useful for this purpose.
  • yarn is intended to be the term otherwise used for "practically endless thread-like structure made of finite fibers or be understood from one or more practically endless filaments ".
  • dispersion is to be understood as meaning a fine distribution of one substance in another substance.
  • the degree of dispersion can range from coarsely disperse systems with an average particle size of> 10 "6 m to colloidally disperse systems with an average particle size between 10 " 6 m and 10 "9 m up to the molecularly disperse systems (particle size ⁇ 10 " 10 m).
  • liquid dispersants and solid or liquid disperse constituents are generally used. Such dispersions are known to the person skilled in the art as an emulsion or sol
  • the method according to the invention is particularly advantageously suitable as part of a stretching or spin-stretching process, in the course of which it can be installed.
  • it is proposed to supply the heat required in the event of removal of the dispersing agent during the relaxation step which is necessary anyway in the stretching process.
  • the desired coating and the desired yarn properties are set in a simple and advantageous manner.
  • the yarn is contacted with the dispersion or the coating agent in molten form by passing the yarn through the dispersion or the melt.
  • the dispersion of the coating agent or the coating agent is in molten form within a container through which the yarn is passed, for example by means of rollers.
  • the yarn can be passed through a scraper, for example in the form of a round opening, the diameter of which is adjustable.
  • This design of the scraper as an adjustable "aperture" allows the amount of dispersion or coating to be stripped off. Setting the layering agent in molten form in a very simple but effective way.
  • the process according to the invention therefore allows a high degree of flexibility in the production of coated yarns or fabrics.
  • melt or the dispersion with the coating agent can also be applied by conventional and known preparation devices, for example by spraying, or by means of application rolls (“kiss rolls”).
  • the yarns to be coated can also pass through the coating agent without being twisted, for example as multifilaments lying next to one another.
  • the treatment of untwisted yarns is even desirable, since after the creation of fabrics, for example fabrics, very dense and closed fabrics can be obtained from these yarns coated without yarn using pressure and temperature. Due to the relatively broad area of the individual filaments lying together in the untwisted yarn compared to the twisted yarn, there is a greater broadening also in the fabric. This creates a very good fabric closure that can be used well for a number of applications.
  • the fabric thus obtained is also relatively thin in relation to fabrics obtained from coated and twisted yarns.
  • the yarns in the form of individual or monofilaments are subjected to the coating process according to the present invention.
  • the coating of the individual filaments with the coating agent leads to the formation of a core-shell structure in the manner of (much more complex) bicomponent spinning, the coating agent forming the jacket component. If these individual filaments coated in this way are then brought together again and treated with heat and possibly also pressure, the sheath components melt and a practically closed sheath is formed around the core components formed by the filaments. Structures obtained in this way are distinguished by the absence of the undesirable wicking effect (wicking).
  • the method according to the invention is thus well suited for the production of so-called "low-wick” or preferably "no-wick” yarns.
  • the yarns to be coated are advantageously yarns made of thermoplastic polymers, such as polyamide, polyester or polyolefin, and blends or copolymers thereof.
  • thermoplastics for the claimed process is due to the fact that it can be conveniently integrated into typical melt spinning processes with connected or downstream stretching devices.
  • Particularly preferred - because of their frequent use in coated flat fabrics - are those yarns which consist essentially of polyethylene terephthalate. It is preferred if the coating is carried out continuously at yarn speeds between 50 and 1000 m / min.
  • the coating agent is a polymer which is selected from the group comprising silicone, polyurethane, polyolefin, polyacrylate, polyvinyl compounds and copolymers and blends thereof.
  • coating compositions which consist essentially of polyvinyl chloride.
  • the dispersant it is desirable - especially from an environmental and cost point of view, if it is water.
  • the process according to the invention makes it possible to apply coating agent amounts of between 1 and 800% by weight, preferably between 10 and 500% by weight, more preferably between 50 and 400% by weight, on the yarns in an easily adjustable amount and in a reproducible and uniform manner to obtain.
  • the present invention is further directed to coated yarns which can be obtained by the process according to the invention, and to flat structures, such as woven or non-woven fabrics, which contain yarns coated in this way.
  • the present invention is also directed to coated yarns or flat structures obtainable therefrom, in which the coating agent is selected such that there is increased transparency of the coated yarn or flat structures thus obtained.
  • Materials that are made up of semi-crystalline polymers, such as polyethylene terephthalate (PET) are transparent in themselves because their morphology consists of crystals that are much smaller than the wavelength of visible light. Therefore, for example, the walls of PET bottles made of partially crystalline PET are transparent.
  • the partially crystalline polymers are in the form of yarns or filaments, these yarns behave like large lenses due to their very small diameter and the difference in the refractive indices between the air and the yarn. This strong refraction of the light is the reason why a bundle of yarn appears opaque.
  • the refractive index of the coating agent measured at the sodium D wavelength, differs from the refractive index of the yarn by no more than 0.01, more preferably by no more than 0.001.
  • Suitable coating agents for yarns based on polyethylene terephthalate are e.g. PVC, polyurethanes, polydimetylsiloxanes, but also polystyrenes and silicones or mixtures of the polymers mentioned.
  • Birefringence describes the phenomenon that the speed of propagation and thus the refractive index of a material depends on the direction of vibration of the incident light.
  • the birefringence is based on the fact that the (oriented) molecules or the molecular lattice of the material in question have different polarizabilities in different directions.
  • circularly polarized natural light which can be understood as the superposition of two perpendicularly linearly polarized beams, is refracted into two separate beams in the material decomposed with different refractive index. Birefringence occurs in all crystals that do not belong to the regular system and is therefore a measure of the molecular orientation, for example in stretched polymers.
  • the idea is now to first determine the refractive indices of the two linearly polarized beams which are perpendicular to one another, to determine an isotropic refractive index for the material therefrom, and then to correlate the isotropic refractive index thus found with that of the coating agent, as described above.
  • the refractive indices of the two beams perpendicular to one another are 1, 73 and 1, 55 at the sodium wavelength. This results in an isotropic index for the yarn of 1.61, which in turn results in a refractive index for the coating agent in the range from 1.60 to 1.62.

Abstract

A method for coating yarn is proposed, including steps in which the yarn is first placed in contact with a dispersion of the coating agent in a dispersing agent or with the coating agent in melted form, optionally excess dispersion or melt is scraped back off the yarn, and then the coating is formed on the yarn, where in the case of the dispersion this occurs by means of at least partially removing the dispersing agent by heating, and the yarn thus coated is then cooled down and wound, which is distinguished by the fact that the coated yarn undergoes additional cooling before winding.

Description

Verfahren zum Beschichten eines Garnes Process for coating a yarn
Beschreibung:Description:
Die vorliegende Erfindung ist gerichtet auf ein Verfahren zum Beschichten eines Garnes umfassend die Schritte, bei denen das Garn zunächst mit einer Dispersion aus dem Beschichtungsmittel in einem Dispersionsmittel oder mit dem Beschichtungsmittel in geschmolzener Form in Kontakt gebracht wird, gegebenenfalls überschüssige Dispersion oder Schmelze vom Garn wieder abgestreift wird, und anschließend die Beschichtung auf dem Garn ausgebildet wird, wobei dieses im Falle der Dispersion durch zumindest teilweises Entfernen des Dispersionsmittels mittels Erwärmung geschieht, und das so beschichtete Garn daraufhin abgekühlt und aufgewickelt wird.The present invention is directed to a method of coating a yarn comprising the steps of first contacting the yarn with a dispersion of the coating agent in a dispersing agent or with the coating agent in molten form, optionally excess dispersion or melt from the yarn is stripped off, and then the coating is formed on the yarn, this being done in the case of dispersion by at least partially removing the dispersant by means of heating, and the yarn coated in this way is then cooled and wound up.
Ein solches Verfahren ist bekannt. So beschreibt beispielsweise die US-A- 3,407,092 ein beschichtetes Garn, das erhalten wird, indem ein Garn aus Nylon durch ein Bad aus einer Emulsion, enthaltend ein Copolymer auf Basis Acrylat in wässriger Emulsion, geleitet wird und anschließend bei etwa 93 °C zwei Minuten lang getrocknet wird. Dieses Garn wird dann gekühlt und gezwirnt. Der Auftrag an Beschichtungsmittel beträgt bei den Garnen der US 3,407,092 ca. 1 bis 10 Gew.-%.Such a method is known. For example, US-A-3,407,092 describes a coated yarn obtained by passing a nylon yarn through an emulsion bath containing an acrylate-based copolymer in aqueous emulsion and then at about 93 ° C for two minutes long drying. This yarn is then cooled and twisted. The coating agent applied to the yarns of US Pat. No. 3,407,092 is approximately 1 to 10% by weight.
Das Beschichten oder Coaten von Flächengebilden, wie Geweben, Gewirken, Papier und Vliesstoffen ist ebenfalls bekannt. Allgemein versteht man unter dieser Art von Beschichtung das Aufbringen eines filmartigen Überzugs aus Natur- oder Kunststoffen, als Streichmasse, auf das Flächengebilde bzw. die Trägerbahn, mit dem Zweck, diese für besondere Anforderungen geeignet zu machen bzw. ihr neue Eigenschaften zu verleihen, z.B. für Kunstleder, Bedeckungen, Planen usw. Durch Kombination geeigneter Flächengebilde bzw. Trägerbahnen und Beschichtungen können Fertigprodukte mit vollkommen neuen Eigenschaften erhalten werden, wobei das Flächengebilde in erster Linie für die mechanische Festigkeit des Endproduktes verantwortlich ist, während die aufgebrachte Beschichtung das Verhalten des Materials beim Gebrauch gegen äußere Einflüsse, wie Atmungsfähigkeit, Knick- und Kratzfestigkeit, Lichtstrahlung, chemische Beständigkeit, flame retardancy, Wasser, Wärme, sowie das Aussehen, wie Bedruckung, Färbung, Narbung, und die besondere Verwendbarkeit bestimmt.The coating or coating of fabrics such as woven fabrics, knitted fabrics, paper and nonwovens is also known. In general, this type of coating is understood to mean the application of a film-like coating made of natural or synthetic materials, as a coating slip, to the fabric or the carrier web the purpose of making them suitable for special requirements or to give them new properties, e.g. for synthetic leather, covers, tarpaulins, etc. By combining suitable flat structures or carrier webs and coatings, finished products with completely new properties can be obtained, the flat structure being the first Line is responsible for the mechanical strength of the end product, while the applied coating, the behavior of the material when used against external influences such as breathability, resistance to kinking and scratching, light radiation, chemical resistance, flame retardancy, water, heat, as well as the appearance, such as printing , Coloring, grain, and the particular usability determined.
In der Regel wird die Beschichtung als eine gleichmäßig dicke Schicht mittels sogenannter Streichmesser auf die Trägerbahn gestrichen. Die Dicke der Beschichtung richtet sich nach dem jeweiligen Verwendungszweck und kann sowohl Bruchteile eines Millimeters als auch mehrere Millimeter betragen. Eine solche Auftragsform ist dem Fachmann an sich bekannt und braucht hier nicht weiter ausgeführt zu werden.As a rule, the coating is applied to the carrier web as a uniformly thick layer using a so-called doctor knife. The thickness of the coating depends on the intended use and can be fractions of a millimeter or several millimeters. Such a form of application is known per se to the person skilled in the art and need not be described further here.
Hinsichtlich des Aufbaus der Beschichtung ist zu beachten, dass eine gute Haftung der Beschichtung auf der Trägerbahn oft nur dann gewährleistet ist, wenn zunächst eine Grundierung mit einer sehr geringen Menge der Beschichtung aufgebracht wird. Nach der Zwischentrocknung wird die anteilsmäßig größere Schicht aufgebracht und ggf. sogar noch eine dritte sogenannte Schlussschicht, auch Schlussstrich genannt, aufgebracht - letztere besonders, um die Kratzfestigkeit zu gewährleisten.With regard to the structure of the coating, it should be noted that good adhesion of the coating to the carrier web is often only guaranteed if a primer with a very small amount of the coating is first applied. After the intermediate drying, the proportionately larger layer is applied and, if necessary, even a third so-called final coat, also called a final coat, is applied - the latter especially to ensure scratch resistance.
Der Prozess des Beschichtens von Flächengebilden kann also durchaus aus mehreren Stufen bestehen, in deren Verlauf oft verhältnismäßig große Auftragsmengen an Beschichtungsmitteln eingesetzt werden. Hinzu kommt in der Regel auch noch der Herstellungsschritt des Flächengebildes an sich, also beispielsweise das Herstellen von Flächengeweben aus Garnen usw. Es wäre daher wünschenswert, wenn zumindest Teile des Beschichtungsverfah- rens bereits in vorgelagerten Prozessstufen durchgeführt werden könnten, also beispielsweise noch vor dem Webschritt. Dann könnten beschichtete Garne direkt zu beschichteten Flächengeweben verarbeitet werden, die lediglich noch unter Anwendung von Wärme und/oder Druck, z.B. durch Heißpressen, zu einer gleichmäßigen und dauerhaften Beschichtung des Gewebes führen.The process of coating flat structures can therefore consist of several stages, in the course of which relatively large quantities of coating agents are often used. In addition, there is usually also the manufacturing step of the flat structure itself, for example the production of flat fabrics from yarns, etc. It would therefore be desirable if at least parts of the coating process could already be carried out in upstream process stages, for example before the weaving step. Coated yarns could then be processed directly into coated flat fabrics, which only lead to a uniform and permanent coating of the fabric using heat and / or pressure, for example by hot pressing.
Auch wäre es sinnvoll, wenn z.B. eine Teilbeschichtung bereits auf den Garnen bzw. im Gewebe vorliegen würde, so dass lediglich nur noch ein oder vielleicht zwei Beschichtungsschritte am fertigen Flächengebilde ausgeführt werden müssen.It would also make sense if e.g. a partial coating would already be present on the yarns or in the fabric, so that only one or maybe two coating steps now have to be carried out on the finished fabric.
Es hat nicht an Versuchen gefehlt, die Garne bereits vor ihrer Weiterverarbeitung zur Flächengebilden mit Beschichtungen auszurüsten, wie beispielsweise in der oben zitierten US 3,407,092 ausgeführt.There has been no lack of attempts to provide the yarns with coatings even before they are processed further to form sheet-like structures, as explained, for example, in US Pat. No. 3,407,092 cited above.
Leider weisen die bekannten Verfahren zur Beschichtung von Garnen stets noch Nachteile auf, die ihre Anwendungsmöglichkeiten einschränken. So ist oft die Auftragsmenge an Beschichtung auf den Garnen zu gering, um als gleichwertiger Ersatz für die erst anschließend folgende Beschichtung der Flächengebilde zu dienen. Auch die Auftragsmenge in der US 3,407,092 ist mit 1 bis 10 Gew.-% zu gering.Unfortunately, the known methods for coating yarns still have disadvantages that limit their possible uses. The amount of coating applied to the yarns is often too small to serve as an equivalent replacement for the subsequent coating of the fabrics. The quantity applied in US Pat. No. 3,407,092 is too small, at 1 to 10% by weight.
Weiterhin weisen die durch direkte Beschichtung erhaltenen Garne häufig eine zu geringe Gleichmäßigkeit, sowohl hinsichtlich der Menge an Beschichtung, als auch hinsichtlich der Form der so erhaltenen beschichteten Garne auf. Es werden häufig nicht gleichmäßig runde bzw. abgeplattete Garne erhalten, die nur schwierig, z.B. auf Webmaschinen, weiter verarbeitbar sind. Dieses Problem tritt naturgemäß verstärkt in Erscheinung, wenn es sich um hohe Auftragsmengen an Beschichtungsmitteln handelt. Darüber hinaus ist auch die Geschwindigkeit des Auftragens an Beschichtung auf die Garne problematisch, da zum einen bei hohen Geschwindigkeiten der Auftrag ungleichmäßig und/oder zu gering ist, wohingegen bei niedrigeren Geschwindigkeiten der Prozess an sich unökonomisch wird. Unter Geschwindigkeit im Sinne der vorliegenden Erfindung soll die Strecke an Garn verstanden werden, die innerhalb einer Zeiteinheit mit dem Beschichtungsmittel in Berührung kommt.Furthermore, the yarns obtained by direct coating often have insufficient uniformity, both in terms of the amount of coating and in terms of the shape of the coated yarns thus obtained. Yarns which are not uniformly round or flattened are often obtained which are difficult to process further, for example on weaving machines. Naturally, this problem becomes more pronounced when it comes to applying large quantities of coating agents. In addition, the speed at which the coating is applied to the yarns is also problematic, since on the one hand the application is uneven and / or too low at high speeds, whereas the process itself becomes uneconomical at lower speeds. Speed in the sense of the present invention is to be understood to mean the stretch of yarn that comes into contact with the coating agent within a unit of time.
Aufgabe der vorliegenden Erfindung ist es daher, ein weiteres Verfahren zur Beschichtung von Garnen zur Verfügung zu stellen, dass die vorstehend geschilderten Probleme zumindest reduziert.The object of the present invention is therefore to provide a further method for coating yarns that at least reduces the problems described above.
Es wurde nun überraschend gefunden, dass die erfindungsgemäße Aufgabe durch ein Verfahren, wie im Eingangsabsatz oder im Oberbegriff des Anspruchs 1 beschrieben, gelöst wird, das sich dadurch auszeichnet, dass das beschichtete Garn eine zusätzliche Abkühlung vor der Aufwicklung erfährt.It has now surprisingly been found that the object according to the invention is achieved by a method as described in the introductory paragraph or in the preamble of claim 1, which is characterized in that the coated yarn undergoes additional cooling before winding.
Durch diese verhältnismäßig einfache Maßnahme werden Garne erhalten, die nicht nur einen hohen und gleichmäßigen Auftrag an Beschichtung aufweisen, sondern auch hinsichtlich ihrer gleichmäßigen runden Form sehr gut zur Weiterverarbeitung geeignet sind. Garne aus Multifilamenten verhalten sich nach der erfindungsgemäßen Beschichtung dann ähnlich wie Monofilamente, was sich beispielsweise sehr vorteilhaft auf ihr Ablaufverhalten auswirkt.This relatively simple measure gives yarns which not only have a high and uniform application of coating, but are also very suitable for further processing in terms of their uniform, round shape. Yarns made of multifilaments then behave similarly to monofilaments after the coating according to the invention, which has a very advantageous effect, for example, on their running behavior.
Das durch die Ausbildung der Beschichtung mittels Wärme bzw. durch den Kontakt mit dem Beschichtungsmittel in geschmolzener Form noch relativ heiße Garn wird also neben der Abkühlung durch Umgebungsluft noch zusätzlich abgekühlt, wobei sich zu diesem Zweck besonders eine wassergekühlte Tangeldüse bewährt hat.The yarn, which is still relatively hot due to the formation of the coating by means of heat or through contact with the coating agent in molten form, is thus additionally cooled in addition to the cooling by ambient air, a water-cooled tangel nozzle having proven particularly useful for this purpose.
Unter Garn soll im Rahmen dieser Erfindung die im übrigen gebräuchliche Bezeichnung für "praktisch endloses fadenförmiges Gebilde aus endlichen Fasern oder aus ein oder mehreren praktisch endlosen Elementarfäden" verstanden werden.Within the scope of this invention, yarn is intended to be the term otherwise used for "practically endless thread-like structure made of finite fibers or be understood from one or more practically endless filaments ".
Unter Dispersion soll im Rahmen dieser Erfindung eine feine Verteilung eines Stoffes in einem anderen Stoff zu verstehen sein. Der Dispersionsgrad kann von grobdispersen Systemen mit einer durchschnittlichen Teilchengröße von > 10"6 m über kolloiddisperse Systeme mit einer durchschnittlichen Teilchengröße zwischen 10"6 m und 10"9 m bis hin zu den molekulardispersen Systemen (Teilchengröße < 10"10 m) reichen. Im Rahmen dieser Erfindung werden in der Regel flüssige Dispersionsmittel und feste oder flüssige disperse Bestandteile eingesetzt. Solche Dispersionen sind dem Fachmann als Emulsion bzw. Sol bekanntIn the context of this invention, dispersion is to be understood as meaning a fine distribution of one substance in another substance. The degree of dispersion can range from coarsely disperse systems with an average particle size of> 10 "6 m to colloidally disperse systems with an average particle size between 10 " 6 m and 10 "9 m up to the molecularly disperse systems (particle size <10 " 10 m). In the context of this invention, liquid dispersants and solid or liquid disperse constituents are generally used. Such dispersions are known to the person skilled in the art as an emulsion or sol
Das erfindungsgemäße Verfahren eignet sich besonders vorteilhaft als Bestandteil eines Streck- oder Spinnstreckprozesses, in dessen Verlauf es eingebaut werden kann. Um das Verfahren noch ökonomischer zu gestalten, wird vorgeschlagen, die im Falle des Entfernens des Dispersionsmittels nötige Wärme während des ohnehin im Streckprozess notwendigen Relaxationsschrittes zuzuführen. Dadurch kommt es in einfacher und vorteilhafter Weise zum Einstellen der gewünschten Beschichtung und der angestrebten Garneigenschaften.The method according to the invention is particularly advantageously suitable as part of a stretching or spin-stretching process, in the course of which it can be installed. In order to make the process even more economical, it is proposed to supply the heat required in the event of removal of the dispersing agent during the relaxation step which is necessary anyway in the stretching process. As a result, the desired coating and the desired yarn properties are set in a simple and advantageous manner.
In einer bevorzugten Ausführungsform erfolgt die Kontaktierung des Garnes mit der Dispersion oder dem Beschichtungsmittel in geschmolzener Form durch ein Durchleiten des Garnes durch die Dispersion oder die Schmelze.In a preferred embodiment, the yarn is contacted with the dispersion or the coating agent in molten form by passing the yarn through the dispersion or the melt.
Hierbei hat es sich besonders bewährt, wenn sich die Dispersion des Beschich- tungsmittels oder das Beschichtungsmittel in geschmolzener Form innerhalb eines Behältnisses befindet, durch die das Garn beispielsweise mittels Rollen hindurchgeführt wird. Unmittelbar nach dem Verlassen des Behältnisses kann das Garn dabei durch einen Abstreifer geführt werden, z.B. in Form einer runden Öffnung, deren Durchmesser verstellbar ist. Durch diese Ausführung des Abstreifers als verstellbare „Blende" läßt sich die abzustreifende Menge an Dispersions- bzw. Be- schichtungsmittel in geschmolzener Form auf sehr einfache, aber effektive Weise einstellen.It has proven particularly useful here if the dispersion of the coating agent or the coating agent is in molten form within a container through which the yarn is passed, for example by means of rollers. Immediately after leaving the container, the yarn can be passed through a scraper, for example in the form of a round opening, the diameter of which is adjustable. This design of the scraper as an adjustable "aperture" allows the amount of dispersion or coating to be stripped off. Setting the layering agent in molten form in a very simple but effective way.
Der besondere Vorteil bei dieser Art des Beschichtungsmittelauftrags liegt darin, dass auch Game erhalten werden können, die nur relativ geringe Mengen an Beschichtungsmittel aufnehmen. Diese derart beschichteten Garne eigen sich, beispielsweise nach dem Webprozess, vorzüglich als Grundform für das Auftragen eines weiteren Beschichtungsschrittes, in dessen Verlauf ggf. Additive, wie Haf- tungsaktivierer und dergleichen, zugesetzt werden können, die andererseits aufgrund zu geringer Stabilität nicht einzusetzen sind.The particular advantage of this type of coating agent application is that games can also be obtained that absorb only relatively small amounts of coating agent. These yarns coated in this way are particularly suitable, for example after the weaving process, as a basic form for the application of a further coating step, in the course of which additives, such as adhesion activators and the like, can be added, which, on the other hand, cannot be used due to insufficient stability.
Der erfindungsgemäße Prozess erlaubt daher eine hohe Flexibilität bei der Herstellung beschichteter Garne bzw. Flächengebilde.The process according to the invention therefore allows a high degree of flexibility in the production of coated yarns or fabrics.
Selbstverständlich sind auch weitere Arten für das Auftragen des Beschichtungs- mittels denkbar. So kann die Schmelze bzw. die Dispersion mit dem Beschichtungsmittel auch durch an sich übliche und bekannte Präparationsvorrichtungen, beispielsweise durch Aufsprühen, oder mittels Auftragsrollen („kiss-rolls") aufgebracht werden.Of course, other types for applying the coating agent are also conceivable. Thus, the melt or the dispersion with the coating agent can also be applied by conventional and known preparation devices, for example by spraying, or by means of application rolls (“kiss rolls”).
Ein weiterer Vorteil des Verfahrens besteht darin, dass die zu beschichtenden Garne auch ungezwirnt, beispielsweise als nebeneinanderliegende Multifilamente, durch das Beschichtungsmittel laufen können. Das Behandeln von ungezwirnten Garnen ist sogar erwünscht, da nach dem Erstellen von Flächengebilden, beispielsweise von Geweben, aus diesen ungezwirnt beschichteten Garnen durch den Einsatz von Druck und Temperatur sehr dichte und geschlossene Flächengebilde erhalten werden können. Durch das verhältnismäßig breitflächigere Zusammenliegen der einzelnen Filamente im ungezwirnten Garn im Vergleich zum gezwirnten Garn kommt es zu einer größeren Verbreiterung auch im Gewebe. Dadurch entsteht ein ganz hervorragender Gewebeschluss, der sich für eine Reihe von Anwendungen gut ausnutzen läßt. Darüber hinaus ist das so erhaltene Gewebe auch relativ dünn im Verhältnis zu Geweben, die aus beschichteten und gezwirnten Garnen erhalten werden. In einer weiteren bevorzugten Ausführungsform werden die Garne in Form von Einzel- bzw. Monofilamenten dem Beschichtungsverfahren gemäß der vorliegenden Erfindung unterzogen. Durch die Beschichtung der Einzelfilamente mit dem Beschichtungsmittel kommt es zur Ausbildung einer Kern-Mantel-Struktur nach Art des (wesentlich aufwendigeren) Bikomponentenspinnens, wobei das Beschichtungsmittel die Mantelkomponente bildet . Werden nun anschließend diese derart beschichteten Einzelfilamente wieder zusammengebracht und mit Wärme und ggf. auch Druck behandelt, schmelzen die Mantelkomponenten auf und es kommt zur Ausbildung einer praktisch geschlossenen Umhüllung um die durch die Filamente gebildeten Kernkomponenten. Derart erhaltene Strukturen zeichnen sich durch das NichtVorhandensein des unerwünschten Dochteffektes (wicking) aus. Somit ist das erfindungsgemäße Verfahren gut geeignet zur Herstellung von sogenannten "low-wick"- bzw. bevorzugt "no-wick"-Garnen.Another advantage of the method is that the yarns to be coated can also pass through the coating agent without being twisted, for example as multifilaments lying next to one another. The treatment of untwisted yarns is even desirable, since after the creation of fabrics, for example fabrics, very dense and closed fabrics can be obtained from these yarns coated without yarn using pressure and temperature. Due to the relatively broad area of the individual filaments lying together in the untwisted yarn compared to the twisted yarn, there is a greater broadening also in the fabric. This creates a very good fabric closure that can be used well for a number of applications. In addition, the fabric thus obtained is also relatively thin in relation to fabrics obtained from coated and twisted yarns. In a further preferred embodiment, the yarns in the form of individual or monofilaments are subjected to the coating process according to the present invention. The coating of the individual filaments with the coating agent leads to the formation of a core-shell structure in the manner of (much more complex) bicomponent spinning, the coating agent forming the jacket component. If these individual filaments coated in this way are then brought together again and treated with heat and possibly also pressure, the sheath components melt and a practically closed sheath is formed around the core components formed by the filaments. Structures obtained in this way are distinguished by the absence of the undesirable wicking effect (wicking). The method according to the invention is thus well suited for the production of so-called "low-wick" or preferably "no-wick" yarns.
Bei den zu beschichtenden Garnen handelt es sich vorteilhaft um Garne aus thermoplastischen Polymeren, wie Polyamid, Polyester oder Polyolefin sowie Blends oder Copolymere daraus.The yarns to be coated are advantageously yarns made of thermoplastic polymers, such as polyamide, polyester or polyolefin, and blends or copolymers thereof.
Selbstverständlich ist es aber auch möglich, andere Arten von Garnen, z.B. aus Naturfasern oder auch lösungsmittelgesponnene Garne in der erfindungsgemäßen Art zu behandeln.Of course, it is also possible to use other types of yarn, e.g. to treat from natural fibers or solvent-spun yarns in the manner according to the invention.
Die gute Eignung der Thermoplasten für das beanspruchte Verfahren liegt jedoch darin begründet, dass es sich in bequemer Weise in typische Schmelzspinnprozesse mit angeschlossenen bzw. nachgelagerten Verstreckeinrichtungen integrieren läßt.However, the good suitability of the thermoplastics for the claimed process is due to the fact that it can be conveniently integrated into typical melt spinning processes with connected or downstream stretching devices.
Besonders bevorzugt - aufgrund ihres häufigen Einsatzes in beschichteten Flächengeweben - sind solche Garne, die im wesentlichen aus Polyethylen- terephthalat bestehen. Es wird bevorzugt, wenn die Beschichtung kontinuierlich bei Geschwindigkeiten des Garnes zwischen 50 und 1000 m/min durchgeführt wird.Particularly preferred - because of their frequent use in coated flat fabrics - are those yarns which consist essentially of polyethylene terephthalate. It is preferred if the coating is carried out continuously at yarn speeds between 50 and 1000 m / min.
Als Beschichtungsmittel eignen sich prinzipiell alle Materialien, die sich aufschmelzen und/oder dispergieren lassen. Besonders bevorzugt wird im Rahmen der vorliegenden Erfindung allerdings, wenn es sich bei dem Beschichtungsmittel um ein Polymer handelt, das gewählt ist aus der Gruppe enthaltend Silikon-, Polyurethan-, Polyolefin-, Polyacrylat-, Polyvinylverbindungen sowie Copolymere und Blends daraus.In principle, all materials that can be melted and / or dispersed are suitable as coating agents. In the context of the present invention, however, it is particularly preferred if the coating agent is a polymer which is selected from the group comprising silicone, polyurethane, polyolefin, polyacrylate, polyvinyl compounds and copolymers and blends thereof.
Noch mehr bevorzugt sind Beschichtungsmittel, die im wesentlichen aus Polyvinylchlorid bestehen.Even more preferred are coating compositions which consist essentially of polyvinyl chloride.
Hinsichtlich des Dispersionsmittels ist es wünschenswert - insbesondere aus Umwelt- und Kostengesichtspunkten, wenn es sich dabei um Wasser handelt.With regard to the dispersant, it is desirable - especially from an environmental and cost point of view, if it is water.
Das erfindungsgemäße Verfahren ermöglicht es, Auftragsmengen an Beschichtungsmittel zwischen 1 und 800 Gew.-%, bevorzugt zwischen 10 und 500 Gew.-%, noch bevorzugter zwischen 50 und 400 Gew.-%, auf den Garnen in gut einstellbarer Menge und reproduzierbar sowie gleichmäßig zu erhalten.The process according to the invention makes it possible to apply coating agent amounts of between 1 and 800% by weight, preferably between 10 and 500% by weight, more preferably between 50 and 400% by weight, on the yarns in an easily adjustable amount and in a reproducible and uniform manner to obtain.
Die vorliegende Erfindung ist weiterhin auf beschichtete Garn gerichtet, die nach dem erfindungsgemäßen Verfahren erhältlich sind, sowie auf Flächengebilde, wie Gewebe oder Vliese, die derart beschichtete Garne enthalten.The present invention is further directed to coated yarns which can be obtained by the process according to the invention, and to flat structures, such as woven or non-woven fabrics, which contain yarns coated in this way.
Die vorliegende Erfindung ist ebenfalls auf beschichtete Garne bzw. daraus erhältliche Flächengebilde gerichtet, bei denen das Beschichtungsmittel so gewählt ist, dass es zu einer erhöhten Transparenz des so erhaltenen beschichteten Garnes bzw. Flächengebilde kommt. Materialien, die aus teilkristallinen Polymeren, wie z.B. Polyethylenterephthalat (PET), aufgebaut sind, sind an sich transparent, da ihre Morphologie aus Kristallen besteht ist, welche viel kleiner sind als die Wellenlänge des sichtbaren Lichtes. Daher sind z.B. die Wände von aus teilkristallinen PET bestehenden PET-Fla- schen durchsichtig.The present invention is also directed to coated yarns or flat structures obtainable therefrom, in which the coating agent is selected such that there is increased transparency of the coated yarn or flat structures thus obtained. Materials that are made up of semi-crystalline polymers, such as polyethylene terephthalate (PET), are transparent in themselves because their morphology consists of crystals that are much smaller than the wavelength of visible light. Therefore, for example, the walls of PET bottles made of partially crystalline PET are transparent.
Liegen die teilkristallinen Polymer jedoch in Form von Garnen bzw. Filamenten vor, dann verhalten sich diese Garne aufgrund ihres sehr geringen Durchmessers und des Unterschiedes der Brechnungsindices zwischen der Luft und dem Garn wie große Linsen. Diese starke Brechung des Lichtes ist der Grund dafür, dass ein Garnbündel undurchsichtig wirkt.However, if the partially crystalline polymers are in the form of yarns or filaments, these yarns behave like large lenses due to their very small diameter and the difference in the refractive indices between the air and the yarn. This strong refraction of the light is the reason why a bundle of yarn appears opaque.
Die Lösung dieses Problems gelingt dadurch, dass das Garn mit einem Beschichtungsmittel beschichtet wird, das einen Brechungsindex aufweist, der sehr nahe an dem Brechungsindex des zu beschichtenden Garnes liegt. Vorzugsweise unterscheidet sich der Brechungsindex des Beschichtungsmittels, gemessen bei der Natrium-D-Wellenlänge, um nicht mehr als 0,01 , noch bevorzugter um nicht mehr als 0,001 , von dem Brechungsindex des Garnes.This problem is solved by coating the yarn with a coating agent which has a refractive index which is very close to the refractive index of the yarn to be coated. Preferably, the refractive index of the coating agent, measured at the sodium D wavelength, differs from the refractive index of the yarn by no more than 0.01, more preferably by no more than 0.001.
Geeignete Beschichtungsmittel für Garne auf Basis von Polyethylenterephthalat sind z.B. PVC, Polyurethane, Polydimetylsiloxane, aber auch Polystyrole und Silikone bzw. Mischungen aus den genannten Polymeren.Suitable coating agents for yarns based on polyethylene terephthalate are e.g. PVC, polyurethanes, polydimetylsiloxanes, but also polystyrenes and silicones or mixtures of the polymers mentioned.
Im Falle von (teil-)verstreckten Garnen kommt noch ein weiteres Problem hinzu, indem verstreckte - also orientierte - Garne, besonders technische Garne, eine hohe Doppelbrechung aufweisen. Doppelbrechung bezeichnet die Erscheinung, dass die Fortpflanzungsgeschwindigkeit und damit der Brechungsindex eines Materials von der Schwingungsrichtung des einfallenden Lichtes abhängt. Die Doppelbrechung beruht darauf, dass die (orientierten) Moleküle bzw. das Molekülgitter des betreffenden Materials in verschiedenen Richtungen verschieden große Polarisierbarkeiten aufweisen. Dadurch wird zirkulär polarisiertes natürliches Licht, das als Superposition zweier senkrecht zueinander linear polarisierter Strahlen aufgefasst werden kann, bei der Brechung im Material in zwei getrennte Strahlen mit verschiedenem Brechungsindex zerlegt. Doppelbrechung tritt in allen Kristallen auf, die nicht zum regulären System gehören, und ist daher ein Maß für die Molekülorientierung z.B. in verstreckten Polymeren.In the case of (partially) drawn yarns, there is another problem in that drawn, ie oriented, yarns, especially technical yarns, have a high birefringence. Birefringence describes the phenomenon that the speed of propagation and thus the refractive index of a material depends on the direction of vibration of the incident light. The birefringence is based on the fact that the (oriented) molecules or the molecular lattice of the material in question have different polarizabilities in different directions. As a result, circularly polarized natural light, which can be understood as the superposition of two perpendicularly linearly polarized beams, is refracted into two separate beams in the material decomposed with different refractive index. Birefringence occurs in all crystals that do not belong to the regular system and is therefore a measure of the molecular orientation, for example in stretched polymers.
Die Idee ist nun, zunächst die Brechungsindices der beiden senkrecht zueinander stehenden linear polarisierten Strahlen zu bestimmen, daraus einen isotropen Brechungsindex für das Material zu ermitteln und dann diesen so gefundenen isotropen Brechungsindex mit dem des Beschichtungsmittels - wie oben beschrieben - zu korrelieren.The idea is now to first determine the refractive indices of the two linearly polarized beams which are perpendicular to one another, to determine an isotropic refractive index for the material therefrom, and then to correlate the isotropic refractive index thus found with that of the coating agent, as described above.
Im Falle eines hochverstreckten Polyethylenterephthalatgarnes betragen beispielsweise die Brechungsindices der beiden senkrecht zueinander stehenden Strahlen 1 ,73 und 1 ,55 bei der Natrium Wellenlänge. Daraus resultiert ein isotroper Index für das Garn von 1 ,61 , woraus sich wiederum ein Brechungsindex für das Beschichtungsmittel im Bereich von 1 ,60 bis 1 ,62 ergibt. In the case of a highly drawn polyethylene terephthalate yarn, for example, the refractive indices of the two beams perpendicular to one another are 1, 73 and 1, 55 at the sodium wavelength. This results in an isotropic index for the yarn of 1.61, which in turn results in a refractive index for the coating agent in the range from 1.60 to 1.62.

Claims

Patentansprüche: claims:
1. Verfahren zum Beschichten eines Garnes umfassend die Schritte, bei denen das Garn zunächst mit einer Dispersion aus dem Beschichtungsmittel in einem Dispersionsmittel oder mit dem Beschichtungsmittel in geschmolzener Form in Kontakt gebracht wird, gegebenenfalls überschüssige Dispersion oder Schmelze vom Garn wieder abgestreift wird, und anschließend die Beschichtung auf dem Garn ausgebildet wird, wobei dieses im Falle der Dispersion durch zumindest teilweises Entfernen des Dispersionsmittels mittels Erwärmung geschieht, und das so beschichtete Garn daraufhin abgekühlt und aufgewickelt wird, dadurch gekennzeichnet, dass das beschichtete Garn eine zusätzliche Abkühlung vor der Aufwicklung erfährt.1. A method for coating a yarn comprising the steps in which the yarn is first brought into contact with a dispersion of the coating agent in a dispersing agent or with the coating agent in molten form, any excess dispersion or melt is stripped off the yarn again, and then the coating is formed on the yarn, this being done in the case of dispersion by at least partially removing the dispersing agent by heating, and the yarn coated in this way is then cooled and wound up, characterized in that the coated yarn undergoes additional cooling before winding.
2. Verfahren nach Anspruch 1 , dadurch gekennzeichnet, dass die zusätzliche Abkühlung mittels einer wassergekühlten Tangeldüse durchgeführt wird.2. The method according to claim 1, characterized in that the additional cooling is carried out by means of a water-cooled Tangel nozzle.
3. Verfahren nach Anspruch 1 oder 2, dadurch gekennzeichnet, dass die Beschichtung des Garnes Teil eines Streck- oder Spinnstreckprozesses ist und die Aufbringung und die Erwärmung zum Entfernen des Dispersionsmittels während des Relaxationsschritttes durchgeführt wird.3. The method according to claim 1 or 2, characterized in that the coating of the yarn is part of a drawing or spin drawing process and the application and heating to remove the dispersant is carried out during the relaxation step.
4. Verfahren nach einem oder mehreren der vorausgehenden Ansprüche, dadurch gekennzeichnet, dass die Kontaktierung des Garnes mit der Dispersion oder dem Beschichtungsmittel in geschmolzener Form durch ein Durchleiten des Garnes durch die Dispersion oder Schmelze erfolgt.4. The method according to one or more of the preceding claims, characterized in that the contacting of the yarn with the dispersion or the coating agent in molten form by passage of the yarn occurs through the dispersion or melt.
5. Verfahren nach Anspruch 4, dadurch gekennzeichnet, dass sich die Dispersion des Beschichtungsmittels oder das Beschichtungsmittel in geschmolzener Form innerhalb eines Behältnisses befindet, durch das das Garn beispielsweise mittels Rollen hindurchgeführt wird.5. The method according to claim 4, characterized in that the dispersion of the coating agent or the coating agent is in molten form within a container through which the yarn is passed, for example by means of rollers.
6. Verfahren nach einem oder mehreren der vorausgehenden Ansprüche 1 bis 5, dadurch gekennzeichnet, dass es sich bei den Garnen um Garne aus thermoplastischen Polymeren handelt, wie Polyamid, Polyester oder Polyolefin sowie Blends oder Copolymere daraus.6. The method according to one or more of the preceding claims 1 to 5, characterized in that the yarns are yarns made of thermoplastic polymers, such as polyamide, polyester or polyolefin, and blends or copolymers thereof.
7. Verfahren nach Ansprüche 6, dadurch gekennzeichnet, dass es sich bei den Garnen um Garne aus im wesentlichen Polyethylenterephthalat handelt.7. The method according to claims 6, characterized in that the yarns are yarns made essentially of polyethylene terephthalate.
8. Verfahren nach einem oder mehreren der vorausgehenden Ansprüche 1 bis 7, dadurch gekennzeichnet, dass die Beschichtung kontinuierlich bei Geschwindigkeiten zwischen 50 und 1000 m/min durchgeführt wird.8. The method according to one or more of the preceding claims 1 to 7, characterized in that the coating is carried out continuously at speeds between 50 and 1000 m / min.
9. Verfahren nach einem oder mehreren der vorausgehenden Ansprüche 1 bis 8, dadurch gekennzeichnet, dass es sich bei dem Beschichtungsmittel um ein Polymeres handelt, das gewählt ist aus der Gruppe enthaltend Silikon-, Polyurethan-, Polyolefin-, Polyacrylat-, Polyvinylverbindungen sowie Copolymere und Blends.9. The method according to one or more of the preceding claims 1 to 8, characterized in that the coating agent is a polymer which is selected from the group comprising silicone, polyurethane, polyolefin, polyacrylate, polyvinyl compounds and copolymers and blends.
10.Verfahren nach einem oder mehreren der vorausgehenden Ansprüche 1 bis 9, dadurch gekennzeichnet, dass es sich bei dem Beschichtungsmittel um Polyvinylchlorid handelt. 10.The method according to one or more of the preceding claims 1 to 9, characterized in that the coating agent is polyvinyl chloride.
11.Verfahren nach einem oder mehreren der vorausgehenden Ansprüche 1 bis 10, dadurch gekennzeichnet, dass es sich bei dem Dispersionsmittel um Wasser handelt.11. The method according to one or more of the preceding claims 1 to 10, characterized in that the dispersant is water.
12. Verfahren nach einem oder mehreren der vorausgehenden Ansprüche 1 bis 11 , dadurch gekennzeichnte, dass die zu beschichtenden Garne ungezwirnt eingesetzt werden.12. The method according to one or more of the preceding claims 1 to 11, characterized in that the yarns to be coated are used untwisted.
13. Beschichtetes Garn erhältlich nach dem Verfahren nach einem oder mehreren der vorausgehenden Ansprüche 1 bis 12.13. Coated yarn obtainable by the process according to one or more of the preceding claims 1 to 12.
14. Flächengebilde, wie Gewebe oder Vlies, enthaltend ein beschichtetes Garn gemäß Anspruch 13.14. Fabric, such as woven or non-woven fabric, containing a coated yarn according to claim 13.
15. Beschichtetes Garn, dadurch gekennzeichnet, dass der Brechungsindex des Beschichtungsmittels, gemessen bei der Natrium-D-Wellenlänge, um nicht mehr als 0,01 , bevorzugt um nicht mehr als 0,001 , von dem Brechungsindex des Garnes abweicht.15. Coated yarn, characterized in that the refractive index of the coating agent, measured at the sodium D wavelength, deviates from the refractive index of the yarn by no more than 0.01, preferably no more than 0.001.
16. Beschichtetes Garn nach Anspruch 15, dadurch gekennzeichnet, dass der Brechungsindex des Garnes der isotrope Brechungsindex dieses Garnes ist. 16. Coated yarn according to claim 15, characterized in that the refractive index of the yarn is the isotropic refractive index of this yarn.
EP05716016A 2004-03-18 2005-03-12 Method for coating a yarn Not-in-force EP1727927B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP05716016A EP1727927B1 (en) 2004-03-18 2005-03-12 Method for coating a yarn

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
EP04006473 2004-03-18
PCT/EP2005/002668 WO2005093142A1 (en) 2004-03-18 2005-03-12 Method for coating a yarn
EP05716016A EP1727927B1 (en) 2004-03-18 2005-03-12 Method for coating a yarn

Publications (2)

Publication Number Publication Date
EP1727927A1 true EP1727927A1 (en) 2006-12-06
EP1727927B1 EP1727927B1 (en) 2008-06-18

Family

ID=34924513

Family Applications (1)

Application Number Title Priority Date Filing Date
EP05716016A Not-in-force EP1727927B1 (en) 2004-03-18 2005-03-12 Method for coating a yarn

Country Status (5)

Country Link
US (1) US7803431B2 (en)
EP (1) EP1727927B1 (en)
AT (1) ATE398693T1 (en)
DE (1) DE502005004453D1 (en)
WO (1) WO2005093142A1 (en)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20120148822A1 (en) * 2010-12-09 2012-06-14 Shih-Ming Lin Curtain fabric
US10688775B2 (en) 2015-04-16 2020-06-23 Response Technologies, Llc Method of manufacturing containment bladders
US11745391B2 (en) 2015-04-16 2023-09-05 Response Technologies, Llc Method of manufacturing complex-shaped, flexible, and reusable tanks
KR102001619B1 (en) * 2019-01-31 2019-07-18 김용건 Method for manufacturing high tenacity fiber and high tenacity fiber manufactured thereby

Family Cites Families (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3407092A (en) 1965-04-06 1968-10-22 Du Pont Coated tire cord yarn
FR2105086A1 (en) 1970-09-16 1972-04-28 Champier Ets Drawing or relaxings synthetic filament - during passage through heated chamber
US4197345A (en) 1978-09-05 1980-04-08 Engineered Yarns, Inc. Fabric having multiple solid colored stripes
US5165993A (en) 1983-07-04 1992-11-24 Akzo N.V. Aromatic polyamide yarn impregnated with lubricating particles, a process for the manufacture of such a yarn, and packing material or rope containing this yarn
DE3465353D1 (en) * 1983-07-04 1987-09-17 Akzo Nv Aromatic polyamide yarn impregnated with lubricating particles, a process for the manufacture of such a yarn, and packing material or rope containing this yarn
DE4002109A1 (en) 1990-01-25 1990-08-23 Dominik Baumueller Transparent fabric - consists of transparent fibres and transparent coating with identical refractive index to fibres
DE59101250D1 (en) 1990-02-15 1994-05-05 Barmag Barmer Maschf Process for the production of an air textured thread.
US5625976A (en) 1994-05-31 1997-05-06 Flow Tek, Inc. Fly lines
US5573850A (en) * 1995-03-24 1996-11-12 Alliedsignal Inc. Abrasion resistant quasi monofilament and sheathing composition
DE19850026A1 (en) 1998-10-30 2000-05-04 Freundes Und Foerderkreis Des Texturizing process for thermoplastic yarns comprises jet to give twist to yarn between heater and friction false twisting unit to shorten length of twisting zone and increase production speeds
US6682816B1 (en) 2002-07-30 2004-01-27 Yao I Fabric Co., Ltd. Fishing line and method for making the same

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See references of WO2005093142A1 *

Also Published As

Publication number Publication date
WO2005093142A1 (en) 2005-10-06
EP1727927B1 (en) 2008-06-18
US7803431B2 (en) 2010-09-28
ATE398693T1 (en) 2008-07-15
DE502005004453D1 (en) 2008-07-31
US20070196651A1 (en) 2007-08-23

Similar Documents

Publication Publication Date Title
DE3122497C2 (en)
DE1660651C3 (en) Process for the production of a multi-core composite thread
DE2731291A1 (en) SUEDE-LIKE RAIL MATERIAL AND METHOD OF ITS MANUFACTURING
DE2948298C2 (en)
EP0044534B1 (en) High-modulus polyacryl nitrile filaments and fibres, and process for manufacturing them
DE2432521A1 (en) PROCESS FOR THE MANUFACTURING OF POLYAMIDE MONO FILES OF HIGH TITER
EP1903134B1 (en) Elastic non-woven fabric and method for its production
DE102013014920A1 (en) Bicomponent fiber for the production of spunbonded nonwovens
EP1727927B1 (en) Method for coating a yarn
DE1296737B (en) Process for the production of threads and fibers from regenerated cellulose
EP1187949A1 (en) Method for the production of spunbonded or melt blown fibers/filaments, method for the production of foils and spundbonded or melt blown fibers/filaments, foils and nonwoven fabric
DE102013014919A1 (en) Bicomponent fiber for the production of spunbonded nonwovens
DE2809346C2 (en) Process for the production of fiber structures
DE1292301B (en) Thread-like structure made of crystalline plastic
DE2411804A1 (en) METHOD OF MANUFACTURING A MODIFIED COMPOSITE FIBER PRODUCT
DE2009971C3 (en) Bicomponent synthetic thread of the matrix / fibril type
EP2714973B1 (en) Method and device for producing synthetic grass fibers
EP1175522B1 (en) Elastane package
DE2856091C2 (en) Process for the production of fiber structures
WO2000000681A1 (en) Elastane fiber and method of production
DE2246324A1 (en) PROCESS FOR PRODUCING HIGH STRENGTH POLYAMIDE AND POLYESTER THREAD YARN
DE2326837A1 (en) PROCESS FOR THE PRODUCTION OF FIBER-SHAPED STRETCHED FORMATIONS FROM POLYMER SUBSTANCES
EP0881323A1 (en) Material coated with a water blocking agent and process for manufacturing the same
DE2030703A1 (en) Laminate suitable as synthetic leather
DE2264819A1 (en) FIBER CLOTH AND ITS USE AS ELECTRICAL INSULATING MATERIAL

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

17P Request for examination filed

Effective date: 20061018

AK Designated contracting states

Kind code of ref document: A1

Designated state(s): AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IS IT LI LT LU MC NL PL PT RO SE SI SK TR

17Q First examination report despatched

Effective date: 20070315

DAX Request for extension of the european patent (deleted)
GRAP Despatch of communication of intention to grant a patent

Free format text: ORIGINAL CODE: EPIDOSNIGR1

GRAS Grant fee paid

Free format text: ORIGINAL CODE: EPIDOSNIGR3

111Z Information provided on other rights and legal means of execution

Free format text: AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IS IT LT LU MC NL PL PT RO SE SI SK TR

Effective date: 20080125

GRAA (expected) grant

Free format text: ORIGINAL CODE: 0009210

AK Designated contracting states

Kind code of ref document: B1

Designated state(s): AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IS IT LI LT LU MC NL PL PT RO SE SI SK TR

REG Reference to a national code

Ref country code: GB

Ref legal event code: FG4D

Free format text: NOT ENGLISH

REF Corresponds to:

Ref document number: 502005004453

Country of ref document: DE

Date of ref document: 20080731

Kind code of ref document: P

REG Reference to a national code

Ref country code: CH

Ref legal event code: EP

REG Reference to a national code

Ref country code: IE

Ref legal event code: FG4D

Free format text: LANGUAGE OF EP DOCUMENT: GERMAN

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: SI

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20080618

Ref country code: FI

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20080618

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: NL

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20080618

Ref country code: PL

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20080618

NLV1 Nl: lapsed or annulled due to failure to fulfill the requirements of art. 29p and 29m of the patents act
PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: CZ

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20080618

Ref country code: SE

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20080918

Ref country code: LT

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20080618

Ref country code: IS

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20081018

REG Reference to a national code

Ref country code: IE

Ref legal event code: FD4D

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: SK

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20080618

Ref country code: RO

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20080618

Ref country code: ES

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20080929

Ref country code: PT

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20081118

PLBE No opposition filed within time limit

Free format text: ORIGINAL CODE: 0009261

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

Free format text: STATUS: NO OPPOSITION FILED WITHIN TIME LIMIT

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: IE

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20080618

Ref country code: EE

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20080618

Ref country code: DK

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20080618

Ref country code: BG

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20080918

26N No opposition filed

Effective date: 20090319

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: IT

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20080618

BERE Be: lapsed

Owner name: DIOLEN INDUSTRIAL FIBRES B.V.

Effective date: 20090331

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: MC

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20090331

REG Reference to a national code

Ref country code: CH

Ref legal event code: PL

GBPC Gb: european patent ceased through non-payment of renewal fee

Effective date: 20090312

REG Reference to a national code

Ref country code: FR

Ref legal event code: ST

Effective date: 20091130

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: CH

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20090331

Ref country code: LI

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20090331

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: BE

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20090331

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: FR

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20091123

Ref country code: GB

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20090312

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: AT

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20090312

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: DE

Payment date: 20100329

Year of fee payment: 6

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: GR

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20080919

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: LU

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20090312

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: HU

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20081219

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: TR

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20080618

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: CY

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20080618

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: DE

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20111001

REG Reference to a national code

Ref country code: DE

Ref legal event code: R119

Ref document number: 502005004453

Country of ref document: DE

Effective date: 20111001