EP0551832A1 - Coating of yarn bundles, process for their manufacturing and textile made thereof - Google Patents

Coating of yarn bundles, process for their manufacturing and textile made thereof Download PDF

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Publication number
EP0551832A1
EP0551832A1 EP93100149A EP93100149A EP0551832A1 EP 0551832 A1 EP0551832 A1 EP 0551832A1 EP 93100149 A EP93100149 A EP 93100149A EP 93100149 A EP93100149 A EP 93100149A EP 0551832 A1 EP0551832 A1 EP 0551832A1
Authority
EP
European Patent Office
Prior art keywords
synthetic polymer
thread
melting
yarn
polymer
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
EP93100149A
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German (de)
French (fr)
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EP0551832B1 (en
Inventor
André Rotgers
Wolfgang Dr. Gessner
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Invista Technologies SARL Switzerland
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Hoechst AG
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Publication date
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Publication of EP0551832A1 publication Critical patent/EP0551832A1/en
Application granted granted Critical
Publication of EP0551832B1 publication Critical patent/EP0551832B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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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
    • D02G3/402—Yarns in which fibres are united by adhesives; Impregnated yarns or threads the adhesive being one component of the yarn, i.e. thermoplastic yarn
    • 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
    • Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S162/00—Paper making and fiber liberation
    • Y10S162/903—Paper forming member, e.g. fourdrinier, sheet forming member
    • 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
    • Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S57/00—Textiles: spinning, twisting, and twining
    • Y10S57/905—Bicomponent material
    • 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
    • Y10T428/2915—Rod, strand, filament or fiber including textile, cloth or fabric
    • 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
    • Y10T428/2929—Bicomponent, conjugate, composite or collateral fibers or filaments [i.e., coextruded sheath-core or side-by-side type]
    • Y10T428/2931—Fibers or filaments nonconcentric [e.g., side-by-side or eccentric, etc.]
    • 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
    • Y10T428/2964—Artificial fiber or filament
    • Y10T428/2967—Synthetic resin or polymer
    • Y10T428/2969—Polyamide, polyimide or polyester
    • 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
    • Y10T428/2973—Particular cross section
    • 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
    • Y10T442/00—Fabric [woven, knitted, or nonwoven textile or cloth, etc.]
    • Y10T442/30—Woven fabric [i.e., woven strand or strip material]
    • Y10T442/3065—Including strand which is of specific structural definition
    • Y10T442/313—Strand material formed of individual filaments having different chemical compositions
    • 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
    • Y10T442/00—Fabric [woven, knitted, or nonwoven textile or cloth, etc.]
    • Y10T442/30—Woven fabric [i.e., woven strand or strip material]
    • Y10T442/3382—Including a free metal or alloy constituent
    • Y10T442/339—Metal or metal-coated strand

Definitions

  • the present invention relates to new bonded threads made of high-strength material, which are suitable for the production of textile fabrics, which are used in hot-humid environments under hydrolyzing conditions, for example as technical filter cloth, in particular as screen cloth for paper machines.
  • DE-Gbm-1,958,017 describes a sieve fabric made of polyester yarn, which was equipped with an acrylic resin before weaving.
  • the aim is to cover the curable acrylic resin as completely as possible, and after curing, a tight coating is formed to prevent hydrolytic degradation of the yarn. Due to the manufacturing process, the acrylic resin only penetrates part of the thread, so that the main part is on the surface as a coating.
  • DE-C-2,818,386 describes further multifilament yarns which can be used to produce such screen fabrics and which have been modified by impregnation with selected curable epoxy resin mixtures and DE-C-3,012,288.
  • multifilament yarns suitable for use in hot-humid environments be provided with a coating of thermoplastic material.
  • DE-A-1,959,574 describes a thread which consists of a core thread and a plastic covering, this covering consisting of a thermoplastic resistant to mechanical stress. According to the description, the thread is characterized by high strength and good wear resistance.
  • staple fiber yarns are known from DE-B-1,510,817, which have been wrapped and soaked with a thermoplastic. These yarns are characterized in that the fiber yarn is only twisted so tightly that its individual fibers can slide against one another during a subsequent plastic stretching of the composite threads.
  • the yarns described are notable for good plastic stretchability and have a strength lying between that of the plastic portion and the staple fiber portion.
  • EP-B-52,268 describes a bundle of threads which is composed of at least three strands consisting of several threads and which are connected to one another with an informal mass made of plastic. It is considered an essential feature of this bundle of threads that the plastic mass is located essentially inside the bundle of threads and is formed from a molten synthetic thread, that the bundle of threads is twisted as a whole and that the cross-section of the bundle is defined solely by threads without any binding plastic mass is.
  • a sewing thread which consists of a multiplicity of yarns twisted by twisting, at least some of these yarns being made of a thermoplastic material which, based on the pattern produced by twisting, is located on the surface of the sewing thread and is in a non-stick state before sewing. After sewing it will thermoplastic material is converted into a sticky state by heating and then connects the sewing thread to the material sewn together.
  • JP-A-60-205,044 there is also known a V-belt which has been produced from a cord which, in addition to a main fiber component A, has up to 5% by weight, based on the total weight, of a fusible fiber component B which passes through Heating is melted.
  • the V-belt is characterized by its high abrasion resistance.
  • the object of the present invention is to provide a high-strength multifilament yarn which is distinguished by a high flexural strength, is easy to produce and is particularly suitable for the production of textile fabrics which are to be used in a hot-humid environment.
  • the invention relates to a bundle of threads with a tensile strength of at least 38 cN / tex, preferably at least 42 cN / tex, of at least one twisted multifilament yarn made of a first synthetic polymer, the individual filaments of which are formed by a second thermoplastic synthetic polymer, the melting point of which is at least 10 ° C., preferably 15 to 50 ° C, below the melting or decomposition point of the first synthetic polymer, are essentially connected over the entire thread cross section by melting.
  • the multifilament yarn made of the first synthetic polymer can be constructed from any meltable or non-meltable polymer, as long as it can be used to produce high-strength multifilament yarns with a tensile strength of at least 45 cN / tex, preferably more than 60 cN / tex.
  • polymers examples include aramids, such as poly-p-phenylene-terephthalamide, poly-m-phenylene-isophthalamide or copolymers based on terephthalic acid and p-phenylenediamine and 3,4'-diaminodiphenyl ether, or based on terephthalic acid and p -Phenylene diamine, 4,4'-diaminobenzanilide and 5,5'-dimethylbenzidine, polyacrylonitrile, polyphenylene sulfide, aromatic polyesters such as poly-p-hydryoxbenzoate, polyamides such as nylon 6 or nylon 6,6, polyether ketones or in particular aliphatic polyesters, such as polyethylene terephthalate or copolyethylene terephthalate, containing, for example, aliphatic or aromatic dicarboxylic acid components, such as isophthalic acid or adipic or sebacic acid, or aliphatic or aromatic diol coco components, such
  • the yarn made of the second synthetic polymer does not necessarily have to be a multifilament yarn, but can also be constructed from staple fibers or represent a tear cable. However, a multifilament yarn is also preferably used here.
  • the second polymer must be a meltable material, the melting point of which is so far below the melting or decomposition point of the first polymer that the multifilament yarn made from the first polymer undergoes practically no loss of strength under the processing conditions. This will usually be the case if the melting point of the second polymer is at least 10 ° C below the melting or decomposition point of the first polymer.
  • the second polymer is selected according to this criterion with regard to the first polymer.
  • thermoplastic polymers which are suitable as a second yarn component are thermoplastic aramids, as described in EP-A-307,993, or in particular aliphatic polyesters, such as polyethylene terephthalate or polybutylene terephthalate.
  • polyethylene terephthalate or a copolyethylene terephthalate is used as the first yarn component
  • polybutylene terephthalate is preferably used as the second yarn component.
  • the melting of the second yarn component is to be designed in such a way that the yarn forming this component is distributed essentially over the entire twisted cross section and the individual filaments of the first yarn component are evenly connected by melting.
  • the thread is heated under tension, as described below.
  • the titer of the multifilament yarns of the first polymer component that compose the thread bundle according to the invention is usually 550 to 2200 dtex, preferably 1050 to 1150 dtex.
  • the titer of the yarns of the second polymer component making up the bundle of threads according to the invention is usually 250 to 1100 dtex, preferably 500 to 600 dtex.
  • the total titer of the bundle of threads according to the invention is usually 800 to 6000 dtex, preferably 1000 to 3500 dtex.
  • the bundle of threads according to the invention is characterized by a high maximum tensile force; this amounts approximately to the maximum tensile force of the multifilament yarns of the first polymer component that build up the thread bundle according to the invention.
  • the bundle of threads according to the invention is further characterized by a high degree of flexural rigidity.
  • the bending stiffness largely corresponds to a monofilament of the same diameter.
  • the proportion of the second polymer is usually less than 60% by weight, preferably 20 to 50% by weight, based on the total weight of the thread bundle.
  • the bundle of threads according to the invention particularly preferably has a rectangular cross section, which in particular has rounded corners. Threads with such cross sections are particularly suitable for the production of filter fabrics for paper machines. Threads with these cross-sectional shapes are described in US-A-4,290,209. described.
  • the bundles of threads according to the invention can be constructed from one or more high-strength multifilament yarns. Multifilaments made of the same or different types of polymer can be used. This also applies to yarns the second polymer.
  • the bundles of threads according to the invention preferably consist of two multifilament yarns twisted together.
  • the polymers used preferably belong to the same type of polymer, e.g. Polyester / polyester.
  • the twisting of the yarn components can take place on all suitable devices, for example on multi-tier twisting machines, ring twisting machines or double-wire twisting machines.
  • the heating in step ii) is carried out to a temperature which is sufficient to practically completely melt the yarn from the second thermoplastic synthetic polymer, so that it loses its yarn structure and is distributed practically over the entire twisted cross section.
  • a temperature which is sufficient to practically completely melt the yarn from the second thermoplastic synthetic polymer, so that it loses its yarn structure and is distributed practically over the entire twisted cross section.
  • at least the melting temperature of this second polymer should be selected; however, a temperature just below this can also be selected depending on the voltage applied.
  • the tension to be used in step ii) is selected so that the stretch desired for the area of use is set. Usually, thread tensions of 0.15 to 0.25 cN / dtex are sufficient for this step.
  • the method defined above is also an object of the present invention.
  • the fabric bundle according to the invention can be used to produce textile fabrics which are particularly suitable for use in a hot and humid environment.
  • the invention therefore also relates to these fabrics and their use.
  • Such textile fabrics can be produced using all known area-forming technologies, in which thread bundles can be processed with a relatively high bending stiffness. Examples of this are knitted fabrics, scrims, knitted fabrics or, in particular, woven fabrics. Of the fabrics, those with a plain weave are particularly preferred.
  • the textile fabrics according to the invention can be used in particular as filter material in hot-humid environments, such as for the filtration of hot liquids or hot, moisture-containing gases, in particular as screen cloth for paper machines.
  • a thread of the type x1Z 340 x 2 S 340 is produced on a ring twisting machine from a high-strength multifilament yarn made of polyethylene terephthalate (PET) of the type dtex 1100 f 200 TO and a multifilament yarn made of polybutylene terephthalate (PBT) of the type dtex 550 f 96 TO.
  • PET polyethylene terephthalate
  • PBT polybutylene terephthalate
  • This thread is then fixed at 235 ° C under a tension of 750 cN and a dwell time of 60 seconds on a drawing system.
  • the PBT thread melts completely and forms a stiffening setting skeleton when it cools down.
  • the thread obtained cannot be opened.
  • Its maximum tensile force is 142 N (this corresponds to a tensile strength of 43 cN / tex); its elongation at break is 10%.
  • a 40-hour hydrolysis test is then carried out in an autoclave at 135 ° C.
  • the tensile strength of the thread is still 47% of the initial value.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Textile Engineering (AREA)
  • Yarns And Mechanical Finishing Of Yarns Or Ropes (AREA)
  • Paper (AREA)
  • Brushes (AREA)
  • Adornments (AREA)
  • Switch Cases, Indication, And Locking (AREA)
  • Woven Fabrics (AREA)
  • Filtering Materials (AREA)

Abstract

There is described a yarn bundle made of at least one twisted multifilament yarn comprising a first synthetic polymer, for example comprising polyethylene terephthalate, having a breaking strength of at least 42 cN/tex, whose individual filaments have become bonded together over essentially the entire thread cross-section by the melting on means of a second thermoplastic synthetic polymer, whose melting point is at least 10 DEG C below the melting or decomposition point of the first synthetic polymer, for example polybutadiene terephthalate. The yarn bundles are distinguished by a high strength, a good flexural stiffness and good resistance to hydrolysis and can be used in particular for manufacturing textile sheet materials for use in hot, moist environments, in particular as wire cloths for paper machines.

Description

Die vorliegende Erfindung betrifft neue bondierte Zwirne aus hochfestem Material, die sich zur Herstellung textiler Flächengebilde eignen, welche in heiß-feuchten Umgebungen also unter hydrolysierenden Bedingungen zum Einsatz kommen, beispielsweise als technische Filtergewebe, insbesondere als Siebgewebe für Papiermaschinen.The present invention relates to new bonded threads made of high-strength material, which are suitable for the production of textile fabrics, which are used in hot-humid environments under hydrolyzing conditions, for example as technical filter cloth, in particular as screen cloth for paper machines.

Zur Herstellung von Filtergeweben, die in heiß-feuchten Umgebungen eingesetzt werden können, werden in großem Umfang Polymere eingesetzt, beispielsweise Polyethylenterephthalat, die unter den Anwendungsbedingungen einem beträchtlichen Abbau durch Hydrolyse unterliegen. Bei diesen Anwendungen hat es sich daher als unerläßlich erwiesen, das Gewebe und/oder die das Gewebe aufbauenden Garne zusätzlich auszurüsten, um den hydrolytischen Abbau zu erschweren und somit die Gebauchsdauer dieser Gewebe heraufzusetzen.To produce filter fabrics that can be used in hot-humid environments, polymers, for example polyethylene terephthalate, are widely used, which are subject to considerable degradation by hydrolysis under the conditions of use. In these applications, it has therefore proven to be essential to additionally equip the fabric and / or the yarns that make up the fabric in order to make hydrolytic degradation more difficult and thus increase the useful life of these fabrics.

So wird in dem DE-Gbm-1,958,017 ein Siebgewebe aus Polyestergarn beschrieben, das vor dem Verweben mit einem Acrylharz ausgerüstet wurde. Bei der Herstellung des Garns wird eine möglichst lückenlose Ummantelung mit dem härtbaren Acrylharz angestrebt und nach dem Aushärten bildet sich ein dichter Überzug, der den hydrolytischen Abbau des Garns verhindern soll. Bedingt durch die Herstellungsweise durchdringt das Acrylharz nur einen Teil des Fadens, so daß der Hauptanteil sich als Überzug auf der Oberfläche befindet.For example, DE-Gbm-1,958,017 describes a sieve fabric made of polyester yarn, which was equipped with an acrylic resin before weaving. When manufacturing the yarn, the aim is to cover the curable acrylic resin as completely as possible, and after curing, a tight coating is formed to prevent hydrolytic degradation of the yarn. Due to the manufacturing process, the acrylic resin only penetrates part of the thread, so that the main part is on the surface as a coating.

Weitere Multifilamentgarne, die zur Herstellung solcher Siebgewebe eingesetzt werden können und die durch Tränken mit ausgewählten härtbaren Epoxidharzmischungen modifiziert worden sind, beschreiben die DE-C-2,818,386 und die DE-C-3,012,288.DE-C-2,818,386 describes further multifilament yarns which can be used to produce such screen fabrics and which have been modified by impregnation with selected curable epoxy resin mixtures and DE-C-3,012,288.

Es ist auch bereits angeregt worden, zum Einsatz in heiß-feuchten Umgebungen geeignete Multifilamentgarne mit einem Überzug aus thermoplastischem Material zu versehen. So wird in der DE-A-1,959,574 ein Faden beschrieben, der aus einem Kernfaden und aus einem Kunststoffüberzug besteht, wobei dieser Überzug aus einem gegenüber mechanische Beanspruchung widerstandsfähigen thermoplastischen Kunststoff besteht. Nach der Beschreibung zeichnet sich der Faden durch eine hohe Festigkeit und eine gute Verschleißfestigkeit aus. Ferner sind aus der DE-B-1,510,817 Stapelfasergarne bekannt, die mit einem thermoplastischen Kunststoff umhüllt und durchtränkt worden sind. Diese Garne sind dadurch gekennzeichnet, daß das Fasergarn nur so fest verdreht ist, daß dessen Einzelfasern bei einer nachfolgenden plastischen Dehnung der Verbundfäden aneinander abgleiten können. Die beschriebenen Garne zeichnen sich durch eine gute plastische Dehnbarkeit aus und weisen eine zwischen der des Kunststoffanteils und des Stapelfaseranteils liegende Festigkeit auf.It has also already been suggested that multifilament yarns suitable for use in hot-humid environments be provided with a coating of thermoplastic material. For example, DE-A-1,959,574 describes a thread which consists of a core thread and a plastic covering, this covering consisting of a thermoplastic resistant to mechanical stress. According to the description, the thread is characterized by high strength and good wear resistance. Furthermore, staple fiber yarns are known from DE-B-1,510,817, which have been wrapped and soaked with a thermoplastic. These yarns are characterized in that the fiber yarn is only twisted so tightly that its individual fibers can slide against one another during a subsequent plastic stretching of the composite threads. The yarns described are notable for good plastic stretchability and have a strength lying between that of the plastic portion and the staple fiber portion.

Es wurde auch bereits vorgeschlagen, Nähfäden durch Verzwirnen von Multifilamentgarnen und thermoplastisch aufschmelzbaren Fäden herzustellen. So wird in der EP-B-52,268 ein Fadenbündel beschrieben, das aus mindestens drei aus mehreren Fäden bestehenden Litzen aufgebaut ist und die mit einer formlosen Masse aus Kunststoff miteinander verbunden sind. Als wesentliches Merkmal dieses Fadenbündels wird angesehen, daß die Kunststoffmasse sich im wesentlichen im Innern des Fadenbündels befindet und aus einem geschmolzenen Kunststoffaden gebildet ist, daß das Fadenbündel als Ganzes gezwirnt ist und daß im Querschnitt des Bündels der Umfang ausschließlich durch Fäden ohne jegliche bindende Kunststoffmasse festgelegt ist. Aus der EP-A-156,503 ist ein Nähfaden bekannt, der aus einer Vielzahl von durch Verzwirnen zusammengedrehter Garne besteht, wobei zumindest ein Teil dieser Garne aus einem thermoplastischen Material besteht, daß sich in Anlehnung an das durch Verzwirnen erzeugte Muster auf der Oberfläche des Nähfadens befindet und das sich vor dem Vernähen in einem nicht klebenden Zustand befindet. Nach dem Vernähen wird das thermoplastische Material durch Erhitzen in einen klebrigen Zustand überführt und verbindet anschließend den Nähfaden mit dem zusammengenähten Material.It has also already been proposed to produce sewing threads by twisting multifilament yarns and thermoplastic meltable threads. For example, EP-B-52,268 describes a bundle of threads which is composed of at least three strands consisting of several threads and which are connected to one another with an informal mass made of plastic. It is considered an essential feature of this bundle of threads that the plastic mass is located essentially inside the bundle of threads and is formed from a molten synthetic thread, that the bundle of threads is twisted as a whole and that the cross-section of the bundle is defined solely by threads without any binding plastic mass is. From EP-A-156,503 a sewing thread is known which consists of a multiplicity of yarns twisted by twisting, at least some of these yarns being made of a thermoplastic material which, based on the pattern produced by twisting, is located on the surface of the sewing thread and is in a non-stick state before sewing. After sewing it will thermoplastic material is converted into a sticky state by heating and then connects the sewing thread to the material sewn together.

Schließlich ist aus der JP-A-60-205,044 noch ein Keilriemen bekannt, der aus einem Kord hergestellt worden ist, welcher neben einer hauptsächlichen Faserkomponente A bis zu 5 Gew.%, bezogen auf das Gesamtgewicht, einer schmelzbaren Faserkomponente B aufweist, die durch Erhitzen aufgeschmolzen wird. Der Keilriemen zeichnet sich durch eine hohe Abriebfestigkeit aus.Finally, from JP-A-60-205,044 there is also known a V-belt which has been produced from a cord which, in addition to a main fiber component A, has up to 5% by weight, based on the total weight, of a fusible fiber component B which passes through Heating is melted. The V-belt is characterized by its high abrasion resistance.

Aufgabe der vorliegenden Erfindung ist es, ein hochfestes Multifilamentgarn bereitzustellen, daß sich durch eine hohe Biegefestigkeit auszeichnet, einfach herzustellen ist und sich besonders zur Herstellung von textilen Flächengebilden eignet, die in heiß-feuchter Umgebung zum Einsatz gelangen sollen.The object of the present invention is to provide a high-strength multifilament yarn which is distinguished by a high flexural strength, is easy to produce and is particularly suitable for the production of textile fabrics which are to be used in a hot-humid environment.

Die Erfindung betrifft ein Fadenbündel mit einer Reißfestigkeit von wenigstens 38 cN/tex, vorzugsweise wenigstens 42 cN/tex, aus mindestens einem verzwirnten Multifilamentgarn aus einem ersten synthetischen Polymeren, dessen Einzelfilamente durch ein zweites thermoplastisches synthetisches Polymer, dessen Schmelzpunkt wenigstens 10 °C, vorzugsweise 15 bis 50 °C, unter dem Schmelz- oder Zersetzungspunkt des ersten synthetischen Polymeren liegt, im wesentlichen über den gesamten Zwirnquerschnitt durch Aufschmelzen verbunden sind.The invention relates to a bundle of threads with a tensile strength of at least 38 cN / tex, preferably at least 42 cN / tex, of at least one twisted multifilament yarn made of a first synthetic polymer, the individual filaments of which are formed by a second thermoplastic synthetic polymer, the melting point of which is at least 10 ° C., preferably 15 to 50 ° C, below the melting or decomposition point of the first synthetic polymer, are essentially connected over the entire thread cross section by melting.

Das Multifilamentgarn aus dem ersten synthetischen Polymeren kann aus beliebigen schmelzbaren oder nicht schmelzbaren Polymeren aufgebaut sein, solange sich damit hochfeste Multifilamentgarne mit einer Reißfestigkeit von wenigstens 45 cN/tex, vorzugsweise mehr als 60 cN/tex herstellen lassen. Beispiele für solche Polymere sind Aramide, wie Poly-p-phenylen-terepthalamid, Poly-m-phenylen-isophthalamid oder Copolymere auf der Basis von Terephthalsäure und p-Phenylendiamin und 3,4'-Diaminodiphenylether, oder auf der Basis von Terephthalsäure und p-Phenylendiamin, 4,4'-Diaminobenzanilid und 5,5'-Dimethylbenzidin, Polyacrylnitril, Polyphenylensulfid, aromatische Polyester, wie Poly-p-hydryoxbenzoat, Polyamide, wie Nylon 6 oder Nylon 6,6, Polyetherketone oder insbesondere aliphatische Polyester, wie Polyethylenterephthalat oder Copolyethylenterephthalat, enthaltend z.B. aliphatische oder aromatische Dicarbonsäurecokomponenten, wie Isophthalsäure oder Adipin- oder Sebacinsäure oder aliphatische oder aromatische Diolcokomponenten, wie Butylenglykol, Cyclohexandimethanol, Cyclohexandiol oder Resorcin.The multifilament yarn made of the first synthetic polymer can be constructed from any meltable or non-meltable polymer, as long as it can be used to produce high-strength multifilament yarns with a tensile strength of at least 45 cN / tex, preferably more than 60 cN / tex. Examples of such polymers are aramids, such as poly-p-phenylene-terephthalamide, poly-m-phenylene-isophthalamide or copolymers based on terephthalic acid and p-phenylenediamine and 3,4'-diaminodiphenyl ether, or based on terephthalic acid and p -Phenylene diamine, 4,4'-diaminobenzanilide and 5,5'-dimethylbenzidine, polyacrylonitrile, polyphenylene sulfide, aromatic polyesters such as poly-p-hydryoxbenzoate, polyamides such as nylon 6 or nylon 6,6, polyether ketones or in particular aliphatic polyesters, such as polyethylene terephthalate or copolyethylene terephthalate, containing, for example, aliphatic or aromatic dicarboxylic acid components, such as isophthalic acid or adipic or sebacic acid, or aliphatic or aromatic diol coco components, such as butylene glycol, cyclohexanedimethanol, cyclohexanediol or resorcinol.

Das Garn aus dem zweiten synthetischen Polymeren muß nicht notwendigerweise ein Multifilamentgarn sein, sondern kann auch aus Stapelfasern aufgebaut sein oder ein Reißkabel darstellen. Vorzugsweise verwendet man allerdings auch hier ein Multifilamentgarn.The yarn made of the second synthetic polymer does not necessarily have to be a multifilament yarn, but can also be constructed from staple fibers or represent a tear cable. However, a multifilament yarn is also preferably used here.

Bei dem zweiten Polymeren muß es sich um ein schmelzbares Material handeln, dessen Schmelzpunkt so weit unter dem Schmelz- oder Zersetzungspunkt des ersten Polymeren liegt, so daß das Multifilamentgarn aus dem ersten Polymer unter den Verarbeitungsbedingungen praktisch keinen Festigkeitsverlust erleidet. Dies wird in der Regel dann der Fall sein, wenn der Schmelzpunkt des zweiten Polymeren wenigstens 10 °C unter dem Schmelz- oder Zersetzungspunkt des ersten Polymeren liegt. Das zweite Polymere wird nach diesem Kriterium in Hinblick auf das erste Polymere ausgewählt. Beispiele für mögliche thermoplastische Polymeren, die sich als zweite Garnkomponente eignen, sind thermoplastische Aramide, wie in der EP-A-307,993 beschrieben oder insbesondere aliphatische Polyester, wie Polyethylenterephthalat oder Polybutylenterephthalat.The second polymer must be a meltable material, the melting point of which is so far below the melting or decomposition point of the first polymer that the multifilament yarn made from the first polymer undergoes practically no loss of strength under the processing conditions. This will usually be the case if the melting point of the second polymer is at least 10 ° C below the melting or decomposition point of the first polymer. The second polymer is selected according to this criterion with regard to the first polymer. Examples of possible thermoplastic polymers which are suitable as a second yarn component are thermoplastic aramids, as described in EP-A-307,993, or in particular aliphatic polyesters, such as polyethylene terephthalate or polybutylene terephthalate.

Verwendet man Polyethylenterephthalat oder ein Co-polyethylenterephthalat als erste Garnkomponente, so setzt man bevorzugt als zweite Garnkomponente Polybutylenterephthalat ein.If polyethylene terephthalate or a copolyethylene terephthalate is used as the first yarn component, polybutylene terephthalate is preferably used as the second yarn component.

Das Aufschmelzen der zweiten Garnkomponente ist so zu gestalten, daß sich das diese Komponente bildende Garn im wesentlichen über den gesamten Zwirnquerschnitt verteilt und die Einzelfilamente der ersten Garnkomponente gleichmäßig durch Aufschmelzen verbindet. Zu diesem Zweck wird der Zwirn unter Spannung erhitzt, wie weiter unten beschrieben.The melting of the second yarn component is to be designed in such a way that the yarn forming this component is distributed essentially over the entire twisted cross section and the individual filaments of the first yarn component are evenly connected by melting. For this purpose, the thread is heated under tension, as described below.

Der Titer der das erfindungsgemäße Fadenbündel aufbauenden Multifilamentgarne der ersten Polymerkomponente beträgt üblicherweise 550 bis 2200 dtex, vorzugsweise 1050 bis 1150 dtex.The titer of the multifilament yarns of the first polymer component that compose the thread bundle according to the invention is usually 550 to 2200 dtex, preferably 1050 to 1150 dtex.

Der Titer der das erfindungsgemäße Fadenbündel aufbauenden Garne der zweiten Polymerkomponente beträgt üblicherweise 250 bis 1100 dtex, vorzugsweise 500 bis 600 dtex.The titer of the yarns of the second polymer component making up the bundle of threads according to the invention is usually 250 to 1100 dtex, preferably 500 to 600 dtex.

Der Gesamttiter des erfindungsgemäßen Fadenbündels beträgt üblicherweise 800 bis 6000 dtex, vorzugsweise 1000 bis 3500 dtex.The total titer of the bundle of threads according to the invention is usually 800 to 6000 dtex, preferably 1000 to 3500 dtex.

Das erfindungsgemäße Fadenbündel zeichnet sich durch eine hohe Höchstzugkraft aus; diese beläuft sich etwa auf die Höchstzugkraft der das erfindungsgemäße Fadenbündel aufbauenden Multifilamentgarne der ersten Polymerkomponente.The bundle of threads according to the invention is characterized by a high maximum tensile force; this amounts approximately to the maximum tensile force of the multifilament yarns of the first polymer component that build up the thread bundle according to the invention.

Das erfindungsgemäße Fadenbündel zeichnet sich ferner durch eine hohe Biegesteifheit aus. Die Biegesteifheit entspricht dabei weitgehend einem Monofilament gleichen Durchmessers.The bundle of threads according to the invention is further characterized by a high degree of flexural rigidity. The bending stiffness largely corresponds to a monofilament of the same diameter.

Der Anteil des zweiten Polymeren beträgt üblicherweise weniger als 60 Gew.%, vorzugsweise 20 bis 50 Gew.%, bezogen auf das Gesamtgewicht des Fadenbündels.The proportion of the second polymer is usually less than 60% by weight, preferably 20 to 50% by weight, based on the total weight of the thread bundle.

Besonders bevorzugt weist das erfindungsgemäße Fadenbündel einen rechteckigen Querschnitt auf, der insbesondere abgerundete Ecken besitzt. Fäden mit derartigen Querschnitten eignen sich besonders zur Herstellung von Filtergeweben für Papiermaschinen. Fäden mit diesen Querschnittsformen sind in der US-A-4,290,209. beschrieben.The bundle of threads according to the invention particularly preferably has a rectangular cross section, which in particular has rounded corners. Threads with such cross sections are particularly suitable for the production of filter fabrics for paper machines. Threads with these cross-sectional shapes are described in US-A-4,290,209. described.

Die erfindungsgemäßen Fadenbündel können aus ein oder mehreren hochfesten Multifilamentgarnen aufgebaut sein. Dabei können Multifilamente aus gleichen oder unterschiedlichen Polymertypen zum Einsatz kommen. Das gilt auch für Garne aus dem zweiten Polymeren.The bundles of threads according to the invention can be constructed from one or more high-strength multifilament yarns. Multifilaments made of the same or different types of polymer can be used. This also applies to yarns the second polymer.

Vorzugsweise bestehen die erfindungsgemäßen Fadenbündel aus zwei miteinander verzwirnten Multifilamentgarnen. Die dabei eingesetzten Polymeren gehören vorzugsweise dem gleichen Polymertyp an, z.B. Polyester/Polyester.The bundles of threads according to the invention preferably consist of two multifilament yarns twisted together. The polymers used preferably belong to the same type of polymer, e.g. Polyester / polyester.

Das erfindungsgemäße Fadenbündel läßt sich durch ein Verfahren herstellen, das folgende Schritte umfaßt:

  • i) Verzwirnen mindestens eines Multifilamentgarns aus einem ersten synthetischen Polymeren mit einer Reißfestigkeit von wenigstens 45 cN/tex zusammen mit mindestens einem Garn aus einem zweiten thermoplastischen synthetischen Polymeren, deren Schmelzpunkt wenigstens 10 °C unter dem Schmelz- oder Zersetzungspunkt des ersten synthetischen Polymeren liegt,
  • ii) Erhitzen des Zwirns unter Spannung auf eine Temperatur, die unter dem Schmelzpunkt des ersten und über dem Schmelzpunkt des zweiten synthetischen Polymeren liegt, so daß das Garn aus dem zweiten thermoplastischen synthetischen Polymeren praktisch vollständig aufschmilzt und die Einzelfilamente des Multifilamentgarns aus dem ersten synthetischen Polymeren im wesentlichen über den gesamten Zwirnquerschnitt durch das aufgeschmolzene Material verbunden werden.
The thread bundle according to the invention can be produced by a method which comprises the following steps:
  • i) twisting at least one multifilament yarn made from a first synthetic polymer with a tenacity of at least 45 cN / tex together with at least one yarn made from a second thermoplastic synthetic polymer, the melting point of which is at least 10 ° C. below the melting or decomposition point of the first synthetic polymer,
  • ii) heating the thread under tension to a temperature which is below the melting point of the first and above the melting point of the second synthetic polymer, so that the yarn from the second thermoplastic synthetic polymer melts practically completely and the individual filaments of the multifilament yarn from the first synthetic polymer are essentially connected over the entire twisted cross section by the melted material.

Das Verzwirnen der Garnkomponenten kann auf allen dafür geeigneten Vorrichtungen erfolgen, beispielsweise auf Etagenzwirnmaschinen, Ringzwirnmaschinen oder Doppeldrahtzwirnmaschinen.The twisting of the yarn components can take place on all suitable devices, for example on multi-tier twisting machines, ring twisting machines or double-wire twisting machines.

Das Erhitzen in Schritt ii) erfolgt auf eine Temperatur, die ausreicht, um das Garn aus dem zweiten thermoplastischen synthetischen Polymeren praktisch vollständig aufzuschmelzen, so daß dieses seine Garnstruktur verliert und sich praktisch über den gesamten Zwirnquerschnitt verteilt. In der Regel ist dabei mindestens die Schmelztemperatur dieses zweiten Polymeren zu wählen; es kann aber auch in Abhängigkeit von der angelegten Spannung eine knapp darunter liegende Temperatur gewählt werden.The heating in step ii) is carried out to a temperature which is sufficient to practically completely melt the yarn from the second thermoplastic synthetic polymer, so that it loses its yarn structure and is distributed practically over the entire twisted cross section. As a rule, at least the melting temperature of this second polymer should be selected; however, a temperature just below this can also be selected depending on the voltage applied.

Die in Schritt ii) zu verwendende Spannung wird so gewählt, daß die für das Einsatzgebiet gewünschte Dehnung eingestellt wird. In der Regel reichen für diesen Schritt Garnspannungen von 0,15 bis 0,25 cN/dtex aus.The tension to be used in step ii) is selected so that the stretch desired for the area of use is set. Usually, thread tensions of 0.15 to 0.25 cN / dtex are sufficient for this step.

Das oben definierte Verfahren ist ebenfalls ein Gegenstand der vorliegenden Erfindung.The method defined above is also an object of the present invention.

Aus dem erfindungsgemäßen Fadenbündel lassen sich textile Flächengebilde herstellen, die sich insbesondere zum Einsatz in heiß-feuchter Umgebung eignen. Die Erfindung betrifft daher auch diese Flächengebilde und deren Verwendung.The fabric bundle according to the invention can be used to produce textile fabrics which are particularly suitable for use in a hot and humid environment. The invention therefore also relates to these fabrics and their use.

Derartige textile Flächengebilde lassen sich nach allen an sich bekannten flächenbildenden Technologien erzeugen, bei denen Fadenbündel mit einer relativ hohen Biegesteifheit verarbeitet werden können. Beispiele dafür sind Gestricke, Gelege, Gewirke oder insbesondere Gewebe. Von den Geweben sind insbesondere solche mit Leinwandbindung bevorzugt.Such textile fabrics can be produced using all known area-forming technologies, in which thread bundles can be processed with a relatively high bending stiffness. Examples of this are knitted fabrics, scrims, knitted fabrics or, in particular, woven fabrics. Of the fabrics, those with a plain weave are particularly preferred.

Die erfindungsgemäßen textilen Flächengebilde lassen sich insbesondere als Filtermaterial in heiß-feuchten Umgebungen einsetzen, wie zur Filtration von heißen Flüssigkeiten oder heißen, feuchtigkeitshaltigen Gasen, insbesondere als Siebgewebe für Papiermaschinen.The textile fabrics according to the invention can be used in particular as filter material in hot-humid environments, such as for the filtration of hot liquids or hot, moisture-containing gases, in particular as screen cloth for paper machines.

Die folgenden Beispiele erläutern die Erfindung ohne sie zu begrenzen.The following examples illustrate the invention without limiting it.

Aus einem hochfesten Multifilamentgarn aus Polyethylenterephthalat (PET) des Typs dtex 1100 f 200 TO und einem Multifilamentgarn aus Polybutylenterephthalat (PBT) des Typs dtex 550 f 96 TO wird auf einer Ringzwirnmaschine ein Zwirn des Typs x1Z 340 x 2 S 340 hergestellt.A thread of the type x1Z 340 x 2 S 340 is produced on a ring twisting machine from a high-strength multifilament yarn made of polyethylene terephthalate (PET) of the type dtex 1100 f 200 TO and a multifilament yarn made of polybutylene terephthalate (PBT) of the type dtex 550 f 96 TO.

Dieser Zwirn wird anschließend bei 235°C unter einer Spannung von 750 cN und einer Verweilzeit von 60 Sekunden auf einer Verstreckanlage fixiert.This thread is then fixed at 235 ° C under a tension of 750 cN and a dwell time of 60 seconds on a drawing system.

Unter diesen Bedingungen schmilzt der PBT-Faden vollständig auf und bildet beim Abkühlen ein versteifend abbindendes Skelett. Der erhaltene Zwirn läßt sich nicht öffnen. Seine Höchstzugkraft beträgt 142 N (das entspricht einer Reißfestigkeit von 43 cN/tex); seine Reißdehnung beträgt 10 %.Under these conditions, the PBT thread melts completely and forms a stiffening setting skeleton when it cools down. The thread obtained cannot be opened. Its maximum tensile force is 142 N (this corresponds to a tensile strength of 43 cN / tex); its elongation at break is 10%.

Anschließend wird im Autoklaven bei 135°C ein 40-stündiger Hydrolysetest durchgeführt. Die Reißfestigkeit des Zwirns beträgt danach noch 47 % des Anfangswertes.A 40-hour hydrolysis test is then carried out in an autoclave at 135 ° C. The tensile strength of the thread is still 47% of the initial value.

Claims (11)

Fadenbündel mit einer Reißfestigkeit von wenigstens 38 cN/tex aus mindestens einem verzwirnten Multifilamentgarn aus einem ersten synthetischen Polymeren, dessen Einzelfilamente durch ein zweites thermoplastisches synthetisches Polymer, dessen Schmelzpunkt wenigstens 10 °C unter dem Schmelz- oder Zersetzungspunkt des ersten synthetischen Polymeren liegt, im wesentlichen über den gesamten Zwirnquerschnitt durch Aufschmelzen verbunden sind.Thread bundles with a tensile strength of at least 38 cN / tex made from at least one twisted multifilament yarn made from a first synthetic polymer, the individual filaments of which are essentially a second thermoplastic synthetic polymer, the melting point of which is at least 10 ° C below the melting or decomposition point of the first synthetic polymer are connected by melting over the entire twisted cross section. Fadenbündel nach Anspruch 1, dadurch gekennzeichnet, daß es sich bei dem ersten synthetischen Polymeren um Polyethylenterephthalat oder um einen Copolyester enthaltend Polyethylenterephthalateinheiten handelt.Thread bundle according to claim 1, characterized in that the first synthetic polymer is polyethylene terephthalate or a copolyester containing polyethylene terephthalate units. Fadenbündel nach Anspruch 2, dadurch gekennzeichnet, daß es sich bei dem zweiten synthetischen Polymeren um Polybutylenterephthalat oder um einen Copolyester enthaltend Polybutylenterephthalateinheiten handelt.Thread bundle according to claim 2, characterized in that the second synthetic polymer is polybutylene terephthalate or a copolyester containing polybutylene terephthalate units. Fadenbündel nach Anspruch 1, dadurch gekennzeichnet, daß der Anteil des zweiten Polymeren 20 bis 50 Gew.%, bezogen auf das Gesamtgewicht des Fadenbündels, beträgt.Thread bundle according to Claim 1, characterized in that the proportion of the second polymer is 20 to 50% by weight, based on the total weight of the thread bundle. Fadenbündel nach Anspruch 1, dadurch gekennzeichnet, daß dieses einen rechteckigen Querschnitt aufweist, der insbesondere abgerundete Ecken besitzt.Thread bundle according to claim 1, characterized in that it has a rectangular cross section, which in particular has rounded corners. Fadenbündel nach Anspruch 1, dadurch gekennzeichnet, daß dieses aus zwei miteinander verzwirnten Multifilamentgarnen besteht, die einen Titer von 500 bis 1150 dtex aufweisen, und daß der Gesamttiter des Fadenbündels 1000 bis 3500 dtex beträgt.Thread bundle according to claim 1, characterized in that it consists of two multifilament yarns twisted together, which have a titer of 500 to 1150 dtex, and that the total titer of the thread bundle is 1000 to 3500 dtex. Verfahren zur Herstellung des Fadenbündels nach Anspruch 1, umfassend die Schritte: i) Verzwirnen mindestens eines Multifilamentgarns aus einem ersten synthetischen Polymeren mit einer Reißfestigkeit von wenigstens 45 cN/tex zusammen mit mindestens einem Garn aus einem zweiten thermoplastischen synthetischen Polymeren, deren Schmelzpunkt wenigstens 10 °C unter dem Schmelz- oder Zersetzungspunkt des ersten synthetischen Polymeren liegt, ii) Erhitzen des Zwirns unter Spannung auf eine Temperatur, die unter dem Schmelzpunkt des ersten und über dem Schmelzpunkt des zweiten synthetischen Polymeren liegt, so daß das Garn aus dem zweiten thermoplastischen synthetischen Polymeren praktisch vollständig aufschmilzt und die Einzelfilamente des Multifilamentgarns aus dem ersten synthetischen Polymeren im wesentlichen über den gesamten Zwirnquerschnitt durch das aufgeschmolzene Material verbunden werden. A method of manufacturing the bundle of threads according to claim 1, comprising the steps of: i) twisting at least one multifilament yarn made from a first synthetic polymer with a tenacity of at least 45 cN / tex together with at least one yarn made from a second thermoplastic synthetic polymer, the melting point of which is at least 10 ° C. below the melting or decomposition point of the first synthetic polymer, ii) heating the thread under tension to a temperature which is below the melting point of the first and above the melting point of the second synthetic polymer, so that the yarn from the second thermoplastic synthetic polymer melts practically completely and the individual filaments of the multifilament yarn from the first synthetic polymer are essentially connected over the entire twisted cross section by the melted material. Textiles Flächengebilde, dadurch gekennzeichnet, daß dieses zu einem wesentlichen Anteil Fadenbündel nach Anspruch 1 enthält.Textile fabric, characterized in that it contains a substantial proportion of thread bundles according to claim 1. Textes Flächengebilde nach Anspruch 8, dadurch gekennzeichnet, daß es sich dabei um ein Gewebe handelt, insbesondere um ein Gewebe mit Leinwandbindung.Textile fabric according to claim 8, characterized in that it is a fabric, in particular a fabric with a plain weave. Textiles Flächengebilde nach Anspruch 8, dadurch gekennzeichnet, daß es Fadenbündel nach Anspruch 5 enthält.Textile fabric according to claim 8, characterized in that it contains bundles of threads according to claim 5. Verwendung des textilen Flächengebildes nach Anspruch 8 als Filtermaterial in heiß-feuchten Umgebungen, insbesondere als Siebgewebe für Papiermaschinen.Use of the textile fabric according to claim 8 as a filter material in hot-humid environments, in particular as a screen fabric for paper machines.
EP93100149A 1992-01-15 1993-01-07 Coating of yarn bundles, process for their manufacturing and textile made thereof Expired - Lifetime EP0551832B1 (en)

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EP0695819A1 (en) * 1994-08-03 1996-02-07 Hoechst Celanese Corporation Heterofilament composite yarn, heterofilament and wire reinforced bundle
EP0717133A2 (en) 1994-12-16 1996-06-19 Hoechst Aktiengesellschaft Production and application of a shrinkable and shrinked, permanently deformable textil material made out of hybrid yarn
US5688594A (en) * 1994-12-16 1997-11-18 Hoechst Aktiengesellschaft Hybrid yarn
EP0737763A2 (en) * 1995-04-10 1996-10-16 Hoechst Aktiengesellschaft Production and application of a permanently deformable textil material made out of hybrid yarn
EP0737763A3 (en) * 1995-04-10 1997-01-22 Hoechst Ag Production and application of a permanently deformable textil material made out of hybrid yarn
US5792555A (en) * 1995-04-10 1998-08-11 Hoechst Aktiengesellschaft Hybrid yarn and permanent deformation capable textile material produced therefrom, its production and use
AU711934B2 (en) * 1995-04-10 1999-10-21 Trevira Gmbh & Co. Kg Hybrid yarn and permanent deformation capable textile material produced therefrom, its production and use

Also Published As

Publication number Publication date
FI930130A0 (en) 1993-01-13
US5366797A (en) 1994-11-22
DE59306421D1 (en) 1997-06-19
JPH05272020A (en) 1993-10-19
FI930130A (en) 1993-07-16
EP0551832B1 (en) 1997-05-14
MX9300181A (en) 1993-07-01
ATE153087T1 (en) 1997-05-15

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