EP0363798A2 - Intermingled sewing-thread consisting of two components, and method for producing the same - Google Patents

Intermingled sewing-thread consisting of two components, and method for producing the same Download PDF

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Publication number
EP0363798A2
EP0363798A2 EP89118385A EP89118385A EP0363798A2 EP 0363798 A2 EP0363798 A2 EP 0363798A2 EP 89118385 A EP89118385 A EP 89118385A EP 89118385 A EP89118385 A EP 89118385A EP 0363798 A2 EP0363798 A2 EP 0363798A2
Authority
EP
European Patent Office
Prior art keywords
filaments
titer
effect
dtex
sewing thread
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
EP89118385A
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German (de)
French (fr)
Other versions
EP0363798B1 (en
EP0363798A3 (en
Inventor
Ingolf Dr. Jacob
Josef Geirhos
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.)
Invista Technologies SARL Switzerland
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Hoechst AG
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Application filed by Hoechst AG filed Critical Hoechst AG
Priority to AT89118385T priority Critical patent/ATE92981T1/en
Priority to EP92118877A priority patent/EP0530860B1/en
Publication of EP0363798A2 publication Critical patent/EP0363798A2/en
Publication of EP0363798A3 publication Critical patent/EP0363798A3/en
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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
    • D02G1/00—Producing crimped or curled fibres, filaments, yarns, or threads, giving them latent characteristics
    • D02G1/20—Combinations of two or more of the above-mentioned operations or devices; After-treatments for fixing crimp or curl
    • D02G1/205—After-treatments for fixing crimp or curl
    • 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
    • D02G3/44—Yarns or threads characterised by the purpose for which they are designed
    • D02G3/46—Sewing-cottons or the like
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T428/00—Stock material or miscellaneous articles
    • Y10T428/29—Coated or structually defined flake, particle, cell, strand, strand portion, rod, filament, macroscopic fiber or mass thereof
    • Y10T428/2913—Rod, strand, filament or fiber
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T428/00—Stock material or miscellaneous articles
    • Y10T428/29—Coated or structually defined flake, particle, cell, strand, strand portion, rod, filament, macroscopic fiber or mass thereof
    • Y10T428/2913—Rod, strand, filament or fiber
    • Y10T428/2922—Nonlinear [e.g., crimped, coiled, 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
    • Y10T428/2922—Nonlinear [e.g., crimped, coiled, etc.]
    • Y10T428/2924—Composite
    • 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]
    • 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
    • Y10T428/2976—Longitudinally varying

Definitions

  • the present invention relates to a two-component loop sewing thread for modern industrial sewing machines with high strength and low shrinkage and a method for its production.
  • a similar loop sewing thread is known for example from EP-A 57 580.
  • several, differently shrinking yarns are fanned by air-jet texturing with different lead and thus a loop yarn is produced.
  • the shrinkage is triggered in a subsequent fixing process, the loops of the filaments are then tightened into bud-like projections.
  • the yarns are provided with a twist of about 100 to 300 T / m between loop formation and fixation.
  • a disadvantage of these known methods is that the final strength of the finished loop yarn is lower than would be expected from the strength of the rovings.
  • the final strength of these known sewing threads is only between 25 and 40 cN / tex, whereby final strength here means the quotient of the maximum tensile force and the final titer at the moment of tearing.
  • the filaments of these known yarns can also shrink to different degrees depending on the degree of integration. These differences can be seen in a different coloration along a filament and are particularly pronounced from filament to filament if yarns with different shrinking capacities have been used.
  • Single-component loop sewing threads are already known, the final strength of which is between 40 and 50 cN / tex.
  • these yarns have poor sewing properties due to their low number of loops.
  • they are provided with around 600 to 800 T / m and their elongation at break is relatively high at over 18%.
  • the present invention relates to a two-component loop sewing thread which does not have the disadvantages of the prior art described above.
  • synthetic polymers such as. B. polyamides, polyacrylonitrile, polypropylene, but preferably polyesters and in particular polyethylene terephthalate and has a final strength, i. H. a maximum tensile strength, based on the
  • the final strength is understood to be the quotient of maximum tensile force and final titer at the moment of tearing; the maximum tensile strength stretch is the elongation that the yarn experiences under the effect of the maximum tensile force.
  • the total titer of the two-component loop sewing thread according to the invention is generally 200 to 900 dtex. Underneath and overlying titers can also be produced if they are of interest in the individual application, but they are not the rule.
  • the two-component loop sewing thread according to the invention is composed of stand-up filaments and effect filaments.
  • the upright filaments are in the Oriented to a much greater extent in the direction of the fiber axis than the effect filaments, which are interwoven and intertwined with the upright filaments, but additionally form loops protruding from the fiber structure due to their greater length and thus have a significant influence on the textile and usage properties of the yarn according to the invention.
  • the total titers of upright filaments and effect filaments of the loop sewing thread according to the invention are in a ratio of 95: 5 to 70:30, preferably 90:10 to 80:20.
  • Stand-up filaments and effect filaments differ in terms of their individual titer. This is 8 to 1.2, preferably 5 to 1.5 dtex for the standing filaments, and 4.5 to 1, preferably 3 to 1.4 dtex for the effect filaments. Within these titer limits, the single titer of the standing filaments is 1.2 to 6 times, in particular 1.5 to 3.5 times, the single titer of the effect filaments.
  • the two-component loop sewing threads according to the invention can be produced from the above-mentioned synthetic spinnable polymers and polycondensation products such as polyamide, polyacrylonitrile, polypropylene and polyester.
  • polyester as the starting material for producing the yarns according to the invention is particularly expedient.
  • Suitable polyesters are in particular those which essentially consist of aromatic dicarboxylic acids, such as, for. B. phthalic acid or isophthalic acid, 1,4-, 1,5- or 2,6-naphthalenedicarboxylic acid, hydroxycarboxylic acids such as. B. para- (2-hydroxyethyl) benzoic acid and aliphatic diols with 2 to 6, preferably 2 to 4 carbon atoms such as.
  • B. ethylene glycol, 1,3-propanediol or 1,4-butanediol can be obtained by cocondensation.
  • This polyester Raw materials can also by condensing in smaller proportions of aliphatic dicarboxylic acids such as. B. glutaric acid, adipic acid or sebacic acid or of polyglycols such as. B. diethylene glycol (2,2-dihydroxydiethyl ether), triethylene glycol (1, 2-di (2-hydroxy-ethoxy) ethane) or modified by smaller proportions of higher molecular weight polyethylene glycols.
  • a further modification possibility which in particular influences the dyeing behavior of the two-component loop sewing threads according to the invention, is the modification by building blocks containing sulfo groups such as e.g. B. by the incorporation of sulfoisophthalic acid.
  • the upper limit of the final strength of the loop sewing threads according to the invention depends on the selected degree of condensation of the polymer material used, in particular the polyester material.
  • the degree of condensation of the polyester is expressed in its viscosity.
  • a high degree of condensation, i.e. H. a high viscosity leads to particularly high final strengths of the yarns according to the invention.
  • DCE dichloroacetic acid
  • a preferred polyester material for producing the loop yarns according to the invention is polyethylene terephthalate.
  • the two-component loop sewing thread according to the invention consisting of stand and effect filaments, is produced by air-jet texturing of two roving strands fed with different lead, these roving strands having different total and individual titer, but both consisting of high-strength, low-shrinkage and low-stretch filaments.
  • High-strength, low-shrinkage and low-elongation filaments are understood to mean those which have a maximum tensile strength, based on the final titer, of at least 65 cN / tex, generally 65 to 90 cN / tex, preferably 70 to 84 cN / tex, a maximum tensile strength Elongation of at least 8%, usually 8 to 15%, preferably 8.5 to 12%, and a thermal shrinkage at 180 ° C. of at most 9%, usually 5 to 9%, preferably 6 to 8% .
  • the filament material is fed to the blow nozzle at a higher speed than is drawn from it.
  • the two strands of yarn to be mixed which then deliver the stand or the effect filaments in the finished yarn, are fed to the texturing nozzle with different lead.
  • the roving strand, from which the upright filaments of the yarn according to the invention emerge, is fed to the blowing nozzle with a lead of 3 to 10%, the roving strand, from which the effect filaments of the yarn according to the invention emerge, with a lead of 10 to 60%.
  • the total titers of the roving strands forming the upright filaments and the effect filaments are selected so that they have a ratio of 95: 5 to 70:30, preferably 90: 10 to 80:20, and that their mixture after the interlacing is 200 to 900 dtex.
  • the total titer T S of the intermingled yarn is not simply composed of the titers of the roving, but that the leading of the two roving must be taken into account here.
  • the total titer T S results from the following formula where T St and V St are the titer and lead of the roving and T E and V E are the titer and the lead of the effect roving.
  • the individual titer of the filament of the roving is 8 to 1.2, preferably 5 to 1.5 dtex, the individual titer of the filament of the effect roving is 4.5 to 1, preferably 3 to 1.4 dtex.
  • the individual titer of the rovings is selected so that the individual titer of the upright filaments is 1.2 to 6 times, preferably 1.5 to 3.5 times, the individual titer of the effect filaments.
  • the high-strength and low-shrinkage yarns can be used, the z. B. from DE-AS 12 88 734 or EP-A 173 200 are known and their production is described there.
  • the rovings required for the process according to the invention are preferably produced in an integrated process step which precedes the air swirling, in which they are obtained by stretching a partially oriented spun fabric and an immediately subsequent, essentially shrink-free heat treatment.
  • substantially shrink-free means that the yarns are preferably kept at a constant length during the heat treatment, but that a shrinkage of up to 4%, better not over 2%, can be admitted.
  • two partially-oriented yarns with different total and single filament titers are drawn on separate drawing units, which are subjected to essentially shrink-free heat treatment and are then immediately fed to the air nozzle texturing.
  • the partially oriented yarns are drawn at a temperature of 70 to 100 ° C., preferably via heated godets, at a drawing tension in the range from 10 to 25 cN / tex, preferably from 12 to 17 cN / tex (in each case based on the drawn titer).
  • the essentially shrink-free heat treatment of the yarns immediately after stretching takes place at a yarn tension between 2 and 20 cN / tex, preferably at 4 to 17 cN / tex, and a temperature in the range from 180 to 250 ° C., preferably from 225 to 235 ° C.
  • this heat treatment can be carried out in any known manner; it is particularly expedient to carry out the heat treatment directly on a heated extraction godet.
  • the drawing conditions of the two partially oriented yarns are preferably kept as identical as possible. However, differences in the drawing conditions of up to ⁇ 10% can be tolerated.
  • the loop yarn withdrawn from the air texturing nozzle can still be subjected to a fixing process.
  • This fixation can also be carried out in any manner known per se, it is expedient to subject the yarn of constant length to hot air treatment at temperatures of 200 to 320 ° C., preferably 240 to 300 ° C.
  • the loops of the individual filaments remain fully intact and, thanks to the entrained air, result in good sewing properties even at high sewing speeds. This advantage is evident in the high values for the so-called sewing length to break, which are determined by the method known from DE-A-34 31 832.
  • the uniformly stretched filaments lead to uniform coloring and thus to a calm image of the seam.
  • the strength of the yarns produced in this way is significantly higher than that of sewing threads with differently shrinking filaments.
  • the use of similar rovings also simplifies the manufacturing process.
  • shrinking rovings for example, much more loops must first be produced than the finished sewing thread should have, since the shrinking process leads to a reduction in the number of loops.
  • the two-component loop sewing thread according to the invention does not have to be twisted during its manufacture. It is therefore untwisted and can also be used untwisted as a sewing thread. Usually, however, is subsequently in the course of further processing, eg. B. for optical reasons, a relatively weak rotation of about 100 to 300 T / m applied.
  • a device for the production of the two-component loop sewing thread according to the invention can be constructed, for example, from the following elements: a bobbin creel for the bobbins of the main and effect roving, two drafting units working in parallel with heatable inlet and outlet godets, a blowing nozzle with separate infeed units for the exact setting of the advance of the roving strands, a take-off unit for the defined take-off of the blown yarn, if desired a conventional hot air fixing device and a take-up reel.
  • a bobbin with stand roving with a titer of 380 dtex f40 (single filament titer: 9.5 dtex) and a bobbin with effect roving with a titer of 83 dtex f24 (single filament titer: 3.5 dtex) are placed on the creel. Both rovings consist of polyethylene terephthalate with an intrinsic viscosity of 0.68 dl / g, measured in DCE at 25 ° C.
  • the two rovings are fed to the drawing units assigned to them and drawn there at a temperature of the inlet godet of 90 ° C. in a ratio of 1: 2.
  • the draw tension was 15 cN / tex for the main roving and 14 cN / tex for the effect roving.
  • the drawn yarns were passed in 10 turns around the outlet godets of the drafting systems, which were heated to 230 ° C.
  • the yarn running speed for the two drafting units was adjusted separately so that the running speed into the blowing nozzle was 315 m / min for the main roving and 420 m / min for the effect roving.
  • the blown yarn was drawn off behind the blow nozzle at 300 m / min. This results in an advance of 5% (tradition 1.05) for the main yarn and 40% (tradition 1.40) for the fancy yarn.
  • the loop yarn was fixed by passing it through a 160 cm long hot air oven heated to 240 ° C.
  • the raw yarn thus obtained was wound up. It has a titer of 243 dtex / f64, a final strength of 50.7 cN / tex, a maximum tensile strength elongation of 9.8% and a heat shrinkage at 180 ° C of 3.1%.
  • its average sewing length is greater than 4,000 stitches when sewing forward and greater than 2,000 stitches when sewing backward.
  • the yarns according to the invention indicated in the following table can be produced in an analogous manner.

Abstract

A two-component loop sewing thread comprising core and effect filaments of high strength and low shrinkage composed of synthetic polymers, with the exception of polyester, is described which has an intrinsic viscosity (measured in solutions in dichloroacetic acid at 25 DEG C) of greater than 0.65 dl/g, having a final strength of over 40 cN/tex, a heat shrinkage at 180 DEG C of less than 8% and a maximum extension under load of less than 18%. This thread has a total denier of 200 to 900 dtex, its core filaments and effect filaments are present in a weight ratio of 95 : 5 to 70 : 30 and the filament titre of the core filaments is 8 to 1.2 dtex and that of the effect filaments 4.5 to 1 dtex.

Description

Die vorliegende Erfindung betrifft ein Zweikomponenten-­Schlingennähgarn für moderne Industrie-Nähmaschinen mit hoher Festigkeit bei geringem Schrumpf und ein Verfahren zu seiner Herstellung.The present invention relates to a two-component loop sewing thread for modern industrial sewing machines with high strength and low shrinkage and a method for its production.

Ein ähnliches Schlingennähgarn ist beispielsweise aus der EP-A 57 580 bekannt. Nach dem dort beschriebenen Verfahren werden mehrere, unterschiedlich schrumpfende Garne durch Luftdüsen-texturieren mit unterschiedlicher Voreilung gefacht und so ein Schlingengarn erzeugt. Beim Auslösen des Schrumpfes in einem anschließenden Fixierprozeß werden die Schlingen der Filamente dann zu knospenartigen Vorsprüngen festgezogen. In einer verbesserten Ausführungsform dieses bekannten Verfahrens, die in der EP-A 123 479 beschrieben worden ist, werden die Garne zwischen Schlingenbildung und Fixierung noch mit einem Drall von etwa 100 bis 300 T/m versehen.A similar loop sewing thread is known for example from EP-A 57 580. According to the process described there, several, differently shrinking yarns are fanned by air-jet texturing with different lead and thus a loop yarn is produced. When the shrinkage is triggered in a subsequent fixing process, the loops of the filaments are then tightened into bud-like projections. In an improved embodiment of this known method, which has been described in EP-A 123 479, the yarns are provided with a twist of about 100 to 300 T / m between loop formation and fixation.

Ein Nachteil dieser bekannten Verfahren besteht darin, daß die Endfestigkeit des fertigen Schlingengarns geringer ist als sie nach der Festigkeit der Vorgarne zu erwarten wäre. Die Endfestigkeit dieser bekannten Nähgarne liegt nur zwischen 25 und 40 cN/tex, wobei unter Endfestigkeit hier der Quotient aus der Höchstzugkraft und dem Endtiter im Augenblick des Reißens verstanden wird. Die Filamente dieser bekannten Garne können darüber hinaus je nach dem Grad der Einbindung unterschiedlich stark einschrumpfen. Diese Unterschiede zeigen sich dann in einer unterschiedlichen Anfärbung entlang eines Filaments und sind von Filament zu Filament besonders ausgeprägt, wenn Garne unterschiedlichen Schrumpfvermögens eingesetzt worden sind.A disadvantage of these known methods is that the final strength of the finished loop yarn is lower than would be expected from the strength of the rovings. The final strength of these known sewing threads is only between 25 and 40 cN / tex, whereby final strength here means the quotient of the maximum tensile force and the final titer at the moment of tearing. The filaments of these known yarns can also shrink to different degrees depending on the degree of integration. These differences can be seen in a different coloration along a filament and are particularly pronounced from filament to filament if yarns with different shrinking capacities have been used.

Es sind auch bereits Einkomponenten-Schlingennähgarne bekannt, deren Endfestigkeit zwischen 40 und 50 cN/tex liegt. Diese Garne weisen aber aufgrund ihrer geringen Schlingenzahl zu schlechte Näheigenschaften auf. Sie sind wie herkömmliche Nähgarne mit etwa 600 bis 800 T/m versehen und ihre Reißdehnung liegt mit über 18 % relativ hoch.Single-component loop sewing threads are already known, the final strength of which is between 40 and 50 cN / tex. However, these yarns have poor sewing properties due to their low number of loops. Like conventional sewing threads, they are provided with around 600 to 800 T / m and their elongation at break is relatively high at over 18%.

Gegenstand der vorliegenden Erfindung ist ein Zweikomponenten-Schlingennähgarn, das die oben beschriebenen Nachteile des Standes der Technik nicht aufweist.The present invention relates to a two-component loop sewing thread which does not have the disadvantages of the prior art described above.

Das erfindungsgemäße Zweikomponenten-Schlingennähgarn mit hoher Festigkeit und geringem Schrumpf besteht aus Steher- und Effektfilamenten aus synthetischen Polymeren wie z. B. Polyamiden, Polyacrylnitril, Polypropylen, vorzugsweise aber Polyestern und insbesondere Polyethylenterephthalat und weist eine Endfestigkeit, d. h. eine Höchstzugkraft, bezogen auf den Endtiter (Endtiter = Filamenttiter im Augenblick der Einwirkung der Höchstzugkraft), von über 40 cN/tex, vorzugsweise 48 bis 60 cN/tex, einen Thermoschrumpf bei 180°C von unter 8 %, vorzugsweise unter 5 %, und eine Höchstzugkraftdehnung von unter 18 %, vorzugsweise unter 15 %, auf.The two-component loop sewing thread with high strength and low shrinkage consists of stand and effect filaments made of synthetic polymers such as. B. polyamides, polyacrylonitrile, polypropylene, but preferably polyesters and in particular polyethylene terephthalate and has a final strength, i. H. a maximum tensile strength, based on the final titer (final titer = filament titer at the moment of the maximum tensile force), of over 40 cN / tex, preferably 48 to 60 cN / tex, a thermal shrinkage at 180 ° C. of less than 8%, preferably less than 5%, and a maximum tensile elongation of less than 18%, preferably less than 15%.

Unter der Endfestigkeit wird der Quotient aus Höchstzugkraft und Endtiter im Augenblick des Reißens verstanden; die Höchstzugkraftdehnung ist die Dehnung, die das Garn bei Einwirkung der Höchstzugkraft erfährt.The final strength is understood to be the quotient of maximum tensile force and final titer at the moment of tearing; the maximum tensile strength stretch is the elongation that the yarn experiences under the effect of the maximum tensile force.

Der Gesamttiter des erfindungsgemäßen Zweikomponenten-­Schlingennähgarns beträgt in der Regel 200 bis 900 dtex. Darunter- und darüberliegende Titer können, sofern sie im einzelnen Anwendungsfall von Interesse sind, ebenfalls hergestellt werden, sie sind jedoch nicht die Regel. Wie bereits ausgeführt, setzt sich das erfindungsgemäße Zweikomponenten-Schlingennähgarn aus Steherfilamenten und Effektfilamenten zusammen. Die Steherfilamente sind im Durchschnitt in weit höherem Maße in Richtung der Faserachse orientiert als die Effektfilamente, die mit den Steherfilamenten verwirbelt und verschlungen sind, aber zusätzlich aufgrund ihrer größeren Länge aus dem Faserverband herausstehende Schlingen bilden und damit die textilen- und Gebrauchseigenschaften des erfindungsgemäßen Garnes wesentlich mitbestimmen. Die Gesamttiter von Steherfilamenten und Effektfilamenten des erfindungsgemäßen Schlingennähgarns stehen in einem Verhältnis von 95 : 5 bis 70 : 30, vorzugsweise 90 : 10 bis 80 : 20.The total titer of the two-component loop sewing thread according to the invention is generally 200 to 900 dtex. Underneath and overlying titers can also be produced if they are of interest in the individual application, but they are not the rule. As already stated, the two-component loop sewing thread according to the invention is composed of stand-up filaments and effect filaments. The upright filaments are in the Oriented to a much greater extent in the direction of the fiber axis than the effect filaments, which are interwoven and intertwined with the upright filaments, but additionally form loops protruding from the fiber structure due to their greater length and thus have a significant influence on the textile and usage properties of the yarn according to the invention. The total titers of upright filaments and effect filaments of the loop sewing thread according to the invention are in a ratio of 95: 5 to 70:30, preferably 90:10 to 80:20.

Steherfilamente und Effektfilamente unterscheiden sich bezüglich ihres Einzeltiters. Dieser beträgt für die Steherfilamente 8 bis 1,2, vorzugsweise 5 bis 1,5 dtex, für die Effektfilamente 4,5 bis 1, vorzugsweise 3 bis 1,4 dtex. Im Rahmen dieser Titergrenzen beträgt der Einzeltiter der Steherfilamente das 1,2- bis 6-fache, insbesondere das 1,5- bis 3,5-fache des Einzeltiters der Effektfilamente.Stand-up filaments and effect filaments differ in terms of their individual titer. This is 8 to 1.2, preferably 5 to 1.5 dtex for the standing filaments, and 4.5 to 1, preferably 3 to 1.4 dtex for the effect filaments. Within these titer limits, the single titer of the standing filaments is 1.2 to 6 times, in particular 1.5 to 3.5 times, the single titer of the effect filaments.

Im Prinzip können die erfindungsgemäßen Zweikomponenten-­Schlingennähgarne aus den obengenannten synthetischen spinnbaren Polymeren und Polykondensationsprodukten wie Polyamid, Polyacrylnitril, Polypropylen und Polyester hergestellt werden. Besonders zweckmäßig ist der Einsatz von Polyester als Ausgangsmaterial zur Herstellung der erfindungsgemäßen Garne. Als Polyester kommen insbesondere solche in Frage, die im wesentlichen aus aromatischen Dicarbonsäuren wie z. B. Phthalsäure oder Isophthalsäure, 1,4-, 1,5- oder 2,6-Naphthalindicarbonsäure, Hydroxycarbonsäuren wie z. B. para-(2-Hydroxyethyl)­benzoesäure und aliphatischen Diolen mit 2 bis 6, vorzugsweise 2 bis 4 Kohlenstoffatomen wie z. B. Ethylenglykol, 1,3-Propandiol oder 1,4-Butandiol durch Cokondensation erhalten werden. Diese Polyester-­ Rohmaterialien können auch durch Einkondensieren geringerer Anteile aliphatischer Dicarbonsäuren wie z. B. Glutarsäure, Adipinsäure oder Sebacinsäure oder von Polyglykolen wie z. B. Diethylenglykol (2,2-Dihydroxydiethylether), Triethylenglykol (1 ,2-Di(2-hydroxy-ethoxy)ethan) oder auch von geringeren Anteilen höhermolekularer Polyethylenglykole modifiziert werden. Eine weitere Modifikationsmöglichkeit, die insbesondere auf das färberische Verhalten der erfindungsgemäßen Zweikomponenten-Schlingennähgarne Einfluß nimmt, ist die Modifikation durch sulfogruppenhaltige Bausteine wie z. B. durch den Einbau von Sulfoisophthalsäure.In principle, the two-component loop sewing threads according to the invention can be produced from the above-mentioned synthetic spinnable polymers and polycondensation products such as polyamide, polyacrylonitrile, polypropylene and polyester. The use of polyester as the starting material for producing the yarns according to the invention is particularly expedient. Suitable polyesters are in particular those which essentially consist of aromatic dicarboxylic acids, such as, for. B. phthalic acid or isophthalic acid, 1,4-, 1,5- or 2,6-naphthalenedicarboxylic acid, hydroxycarboxylic acids such as. B. para- (2-hydroxyethyl) benzoic acid and aliphatic diols with 2 to 6, preferably 2 to 4 carbon atoms such as. B. ethylene glycol, 1,3-propanediol or 1,4-butanediol can be obtained by cocondensation. This polyester Raw materials can also by condensing in smaller proportions of aliphatic dicarboxylic acids such as. B. glutaric acid, adipic acid or sebacic acid or of polyglycols such as. B. diethylene glycol (2,2-dihydroxydiethyl ether), triethylene glycol (1, 2-di (2-hydroxy-ethoxy) ethane) or modified by smaller proportions of higher molecular weight polyethylene glycols. A further modification possibility, which in particular influences the dyeing behavior of the two-component loop sewing threads according to the invention, is the modification by building blocks containing sulfo groups such as e.g. B. by the incorporation of sulfoisophthalic acid.

Die Obergrenze der Endfestigkeit der erfindungsgemäßen Schlingennähgarne hängt vom gewählten Kondensationsgrad des eingesetzten Polymermaterials, insbesondere des Polyestermaterials, ab. Der Kondensationsgrad des Polyesters kommt in seiner Viskosität zum Ausdruck. Ein hoher Kondensationsgrad, d. h. eine hohe Viskosität, führt zu besonders hohen Endfestigkeiten der erfindungsgemäßen Garne. Bevorzugt werden daher zur Herstellung erfindungsgemäßer Schlingennähgarne hochmolekularer Polyester mit einer Intrinsic-Viskosität (IV) von über 0,65 dl/g, insbesondere über 0,75 dl/g, wobei diese Werte gemessen werden in Lösungen in Dichloressigsäure (DCE) bei 25°C.The upper limit of the final strength of the loop sewing threads according to the invention depends on the selected degree of condensation of the polymer material used, in particular the polyester material. The degree of condensation of the polyester is expressed in its viscosity. A high degree of condensation, i.e. H. a high viscosity leads to particularly high final strengths of the yarns according to the invention. Preference is therefore given to producing loop sewing threads according to the invention with high molecular weight polyesters with an intrinsic viscosity (IV) of over 0.65 dl / g, in particular over 0.75 dl / g, these values being measured in solutions in dichloroacetic acid (DCE) at 25 ° C.

Ein bevorzugtes Polyestermaterial zur Herstellung der erfindungsgemäßen Schlingengarne ist das Polyethylenterephthalat.A preferred polyester material for producing the loop yarns according to the invention is polyethylene terephthalate.

Die Herstellung des erfindungsgemäßen Zweikomponenten-­Schlingennähgarns, bestehend aus Steher- und Effektfilamenten, erfolgt durch Luftdüsentexturierung zweier mit unterschiedlicher Voreilung zugeführter Vorgarnstränge, wobei diese Vorgarnstränge unterschiedliche Gesamt- und Einzeltiter aufweisen, beide jedoch aus hochfesten schrumpf- und dehnungsarmen Filamenten bestehen.The two-component loop sewing thread according to the invention, consisting of stand and effect filaments, is produced by air-jet texturing of two roving strands fed with different lead, these roving strands having different total and individual titer, but both consisting of high-strength, low-shrinkage and low-stretch filaments.

Dabei sind unter hochfesten, schrumpf- und dehnungsarmen Filamenten solche zu verstehen, die eine Höchstzugkraft, bezogen auf den Endtiter, von mindestens 65 cN/tex, in der Regel 65 bis 90 cN/tex, vorzugsweise 70 bis 84 cN/tex, eine Höchstzugkraft-Dehnung von mindestens 8 %, in der Regel 8 bis 15 %, vorzugsweise 8,5 bis 12 %, und einen Thermoschrumpf bei 180°C von höchstens 9 %, in der Regel 5 bis 9 %, vorzugsweise 6 bis 8 %, haben.High-strength, low-shrinkage and low-elongation filaments are understood to mean those which have a maximum tensile strength, based on the final titer, of at least 65 cN / tex, generally 65 to 90 cN / tex, preferably 70 to 84 cN / tex, a maximum tensile strength Elongation of at least 8%, usually 8 to 15%, preferably 8.5 to 12%, and a thermal shrinkage at 180 ° C. of at most 9%, usually 5 to 9%, preferably 6 to 8% .

Bei der Luftdüsentexturierung von Garnen wird bekanntlich das Filamentmaterial der Blasdüse mit größerer Geschwindigkeit zugeführt als aus ihr abgezogen. Der Geschwindigkeitsüberschuß der Zuführung gegenüber dem Abzug, ausgedrückt in Prozenten, bezogen auf die Abzugsgeschwindigkeit, bezeichnet man als die Voreilung. Beim erfindungsgemäßen Verfahren werden nun die beiden zu mischenden Garnstränge, die im fertigen Garn dann die Steher- oder die Effektfilamente liefern, mit unterschiedlicher Voreilung der Texturierdüse zugeführt. Der Vorgarnstrang, aus dem die Steherfilamente des erfindungsgemäßen Garns hervorgehen, wird der Blasdüse mit einer Voreilung von 3 bis 10 %, der Vorgarnstrang, aus dem die Effektfilamente des erfindungsgemäßen Garns hervorgehen, mit einer Voreilung von 10 bis 60 % zugeführt. Aufgrund dieser unterschiedlichen Voreilung werden größere Längen der Effektfilamente mit kleineren Längen der Steherfilamente in der Texturierdüse verwirbelt, was dazu führt, daß die Effektfilamente im fertigen erfindungsgemäßen Garn erheblich mehr Bögen und Schlingen ausbilden als die Steherfilamente, welche im wesentlichen in Richtung der Faserachse verlaufen.In the air nozzle texturing of yarns, it is known that the filament material is fed to the blow nozzle at a higher speed than is drawn from it. The excess speed of the feed compared to the take-off, expressed as a percentage based on the take-off speed, is referred to as the advance. In the method according to the invention, the two strands of yarn to be mixed, which then deliver the stand or the effect filaments in the finished yarn, are fed to the texturing nozzle with different lead. The roving strand, from which the upright filaments of the yarn according to the invention emerge, is fed to the blowing nozzle with a lead of 3 to 10%, the roving strand, from which the effect filaments of the yarn according to the invention emerge, with a lead of 10 to 60%. Because of this different advance, longer lengths of the effect filaments are swirled with smaller lengths of the upright filaments in the texturing nozzle, which means that the effect filaments in the finished yarn according to the invention form considerably more arches and loops than the upright filaments, which run essentially in the direction of the fiber axis.

Die Gesamttiter der die Steherfilamente und die Effektfilamente bildenden Vorgarnstränge werden so ausgewählt, daß sie ein Verhältnis von 95 : 5 bis 70 : 30, vorzugsweise 90 : 10 bis 80 : 20, haben und daß ihre Mischung nach dem Verwirbeln 200 bis 900 dtex beträgt. Dabei ist zu beachten, daß sich der Summentiter TS des verwirbelten Garns nicht einfach additiv aus den Titern der Vorgarne zusammensetzt, sondern daß hier die Voreilung der beiden Vorgarne zu berücksichtigen ist. Der Summentiter TS ergibt sich nach der folgenden Formel

Figure imgb0001
worin TSt und VSt die Titer und Voreilung des Stehervorgarns und TE und VE die Titer und die Voreilung des Effektvorgarns bedeutet.The total titers of the roving strands forming the upright filaments and the effect filaments are selected so that they have a ratio of 95: 5 to 70:30, preferably 90: 10 to 80:20, and that their mixture after the interlacing is 200 to 900 dtex. It should be noted that the total titer T S of the intermingled yarn is not simply composed of the titers of the roving, but that the leading of the two roving must be taken into account here. The total titer T S results from the following formula
Figure imgb0001
 where T St and V St are the titer and lead of the roving and T E and V E are the titer and the lead of the effect roving.

Der Einzeltiter der Filamente des Stehervorgarns liegt bei 8 bis 1,2, vorzugsweise 5 bis 1,5 dtex, der Einzeltiter der Filamente des Effektvorgarns liegt bei 4,5 bis 1, vorzugsweise bei 3 bis 1,4 dtex. Im Rahmen dieser Werte werden die Einzeltiter der Vorgarne so gewählt, daß der Einzeltiter der Steherfilamente des 1,2- bis 6-fache, vorzugsweise das 1,5- bis 3,5-fache, der Einzeltiter der Effektfilamente beträgt.The individual titer of the filament of the roving is 8 to 1.2, preferably 5 to 1.5 dtex, the individual titer of the filament of the effect roving is 4.5 to 1, preferably 3 to 1.4 dtex. Within the framework of these values, the individual titer of the rovings is selected so that the individual titer of the upright filaments is 1.2 to 6 times, preferably 1.5 to 3.5 times, the individual titer of the effect filaments.

Als Vorgarne für die Herstellung des erfindungsgemäßen Zweikomponenten-Schlingennähgarns können die hochfesten und schrumpfarmen Garne eingesetzt werden, die z. B. aus der DE-AS 12 88 734 oder der EP-A 173 200 bekannt sind und deren Herstellung dort beschrieben ist. Vorzugsweise erfolgt jedoch die Herstellung der für das erfindungsgemäße Verfahren erforderlichen Vorgarne in einem integrierten, der Luftverwirbelung unmittelbar vorgeschalteten Verfahrensschritt, in welchem sie durch Verstrecken einer teilorientierten Spinnware und eine unmittelbar anschließende, im wesentlichen schrumpffreie Wärmebehandlung erhalten werden. Im wesentlichen schrumpffrei bedeutet, daß die Garne während der Wärmebehandlung vorzugsweise auf konstanter Länge gehalten werden, daß jedoch ein Schrumpf von bis zu 4 %, besser nicht über 2 %, zugelassen werden kann. Bei dieser bevorzugten Ausführungsform des erfindungsgemäßen Verfahrens werden daher zwei teilorienierte Garne mit verschiedenen Gesamt- und Einzelfilamenttitern auf separaten Verstreckwerken verstreckt, der im wesentlichen schrumpffreien Wärmebehandlung unterworfen und unmittelbar anschließend der Luftdüsentexturierung zugeführt. Die Verstreckung der teilorientierten Garne erfolgt bei einer Temperatur von 70 bis 100°C, vorzugsweise über beheizte Galetten bei einer Verstreckspannung im Bereich von 10 bis 25 cN/tex, vorzugsweise von 12 bis 17 cN/tex (jeweils bezogen auf den verstreckten Titer). Die unmittelbar an die Verstreckung anschließende, im wesentlichen schrumpffreie Wärmebehandlung der Garne erfolgt bei einer Garnspannung zwischen 2 und 20 cN/tex, vorzugsweise bei 4 bis 17 cN/tex, und einer Temperatur im Bereich von 180 bis 250°C, vorzugsweise von 225 bis 235°C. Diese Wärmebehandlung kann im Prinzip in jeder bekannten Weise erfolgen, besonders zweckmäßig ist es, die Wärmebehandlung direkt auf einer beheizten Abzugsgalette vorzunehmen.As rovings for the production of the two-component loop sewing thread according to the invention, the high-strength and low-shrinkage yarns can be used, the z. B. from DE-AS 12 88 734 or EP-A 173 200 are known and their production is described there. However, the rovings required for the process according to the invention are preferably produced in an integrated process step which precedes the air swirling, in which they are obtained by stretching a partially oriented spun fabric and an immediately subsequent, essentially shrink-free heat treatment. Substantially shrink-free means that the yarns are preferably kept at a constant length during the heat treatment, but that a shrinkage of up to 4%, better not over 2%, can be admitted. In this preferred embodiment of the method according to the invention, therefore, two partially-oriented yarns with different total and single filament titers are drawn on separate drawing units, which are subjected to essentially shrink-free heat treatment and are then immediately fed to the air nozzle texturing. The partially oriented yarns are drawn at a temperature of 70 to 100 ° C., preferably via heated godets, at a drawing tension in the range from 10 to 25 cN / tex, preferably from 12 to 17 cN / tex (in each case based on the drawn titer). The essentially shrink-free heat treatment of the yarns immediately after stretching takes place at a yarn tension between 2 and 20 cN / tex, preferably at 4 to 17 cN / tex, and a temperature in the range from 180 to 250 ° C., preferably from 225 to 235 ° C. In principle, this heat treatment can be carried out in any known manner; it is particularly expedient to carry out the heat treatment directly on a heated extraction godet.

Vorzugsweise werden bei der Durchführung des erfindungsgemäßen Verfahrens die Verstreckbedingungen der beiden teilorientierten Garne möglichst gleich gehalten. Unterschiede in den Verstreckbedingungen von bis zu ± 10 % können dabei jedoch toleriert werden.When the method according to the invention is carried out, the drawing conditions of the two partially oriented yarns are preferably kept as identical as possible. However, differences in the drawing conditions of up to ± 10% can be tolerated.

Gewünschtenfalls kann das aus der Lufttexturierdüse abgezogene Schlingengarn noch einem Fixierprozeß unterworfen werden. Diese Fixierung kann ebenfalls in jeder an sich bekannten Weise durchgeführt werden, zweckmäßig ist es, das Garn mit konstanter Länge einer Heißluftbehandlung bei Temperaturen von 200 bis 320°C, vorzugsweise 240 bis 300°C, zu unterwerfen.If desired, the loop yarn withdrawn from the air texturing nozzle can still be subjected to a fixing process. This fixation can also be carried out in any manner known per se, it is expedient to subject the yarn of constant length to hot air treatment at temperatures of 200 to 320 ° C., preferably 240 to 300 ° C.

Das so erhaltene erfindungsgemäße Zweikomponenten-­Schlingennähgarn zeigt überraschenderweise mehrere Vorteile gegenüber bekannten Nähgarnen:The two-component loop sewing thread according to the invention thus obtained surprisingly shows several advantages over known sewing threads:

Die Schlingen der einzelnen Filamente bleiben voll erhalten und ergeben durch die mitgerissene Luft gute Näheigenschaften auch bei hohen Nähgeschwindigkeiten. Dieser Vorteil zeigt sich in hohen Werten für die sogenannte Nählänge bis zum Bruch, die nach dem aus der DE-A-34 31 832 bekannten Verfahren bestimmt werden. Die einheitlich verstreckten Filamente führen zu gleichmäßiger Anfärbung und damit zu einem ruhigen Bild der Naht. Die Festigkeit der so hergestellten Garne liegt deutlich höher als die von Nähgarnen mit unterschiedlich schrumpfenden Filamenten.The loops of the individual filaments remain fully intact and, thanks to the entrained air, result in good sewing properties even at high sewing speeds. This advantage is evident in the high values for the so-called sewing length to break, which are determined by the method known from DE-A-34 31 832. The uniformly stretched filaments lead to uniform coloring and thus to a calm image of the seam. The strength of the yarns produced in this way is significantly higher than that of sewing threads with differently shrinking filaments.

Die Verwendung gleichartiger Vorgarne vereinfacht darüber hinaus das Herstellverfahren. Beim Einsatz hochschrumpfender Vorgarne müssen beispielsweise zuerst viel mehr Schlingen erzeugt werden als dann das fertige Nähgarn aufweisen soll, da der Schrumpfprozeß zu einer Reduzierung der Schlingenzahl führt. Das erfindungsgemäße Zweikomponenten-­Schlingennähgarn muß während seiner Herstellung nicht gezwirnt werden. Es liegt daher ungezwirnt vor und kann auch ungezwirnt als Nähgarn eingesetzt werden. Meist wird jedoch anschließend im Zuge der Weiterverarbeitung, z. B. aus optischen Gründen, noch eine relativ schwache Drehung von etwa 100 bis 300 T/m aufgebracht.The use of similar rovings also simplifies the manufacturing process. When using shrinking rovings, for example, much more loops must first be produced than the finished sewing thread should have, since the shrinking process leads to a reduction in the number of loops. The two-component loop sewing thread according to the invention does not have to be twisted during its manufacture. It is therefore untwisted and can also be used untwisted as a sewing thread. Mostly, however, is subsequently in the course of further processing, eg. B. for optical reasons, a relatively weak rotation of about 100 to 300 T / m applied.

Beispiel:Example:

Eine Einrichtung zur Herstellung des erfindungsgemäßen Zweikomponenten-Schlingennähgarns kann beispielsweise aus folgenden Elementen aufgebaut sein: einem Spulengatter für die Spulen des Steher- und Effektvorgarns, zwei parallel arbeitenden Streckwerken mit heizbaren Ein- und Auslaufgaletten, einer Blasdüse mit getrennten Einlaufwerken zur exakten Einstellung der Voreilung der Vorgarnstränge, einem Abzugswerk zum definierten Abzug des verblasenen Garns, gewünschtenfalls einer üblichen Heißluftfixiereinrichtung und eine Aufwickelspule.A device for the production of the two-component loop sewing thread according to the invention can be constructed, for example, from the following elements: a bobbin creel for the bobbins of the main and effect roving, two drafting units working in parallel with heatable inlet and outlet godets, a blowing nozzle with separate infeed units for the exact setting of the advance of the roving strands, a take-off unit for the defined take-off of the blown yarn, if desired a conventional hot air fixing device and a take-up reel.

Auf dem Spulengatter wird eine Spule mit Stehervorgarn vom Titer 380 dtex f40 (Einzelfilamenttiter: 9,5 dtex) und eine Spule mit Effektvorgarn vom Titer 83 dtex f24 (Einzelfilamenttiter: 3,5 dtex) vorgelegt. Beide Vorgarne bestehen aus Polyethylenterephthalat der Intrinsic-­Viskosität 0,68 dl/g, gemessen in DCE bei 25°C.A bobbin with stand roving with a titer of 380 dtex f40 (single filament titer: 9.5 dtex) and a bobbin with effect roving with a titer of 83 dtex f24 (single filament titer: 3.5 dtex) are placed on the creel. Both rovings consist of polyethylene terephthalate with an intrinsic viscosity of 0.68 dl / g, measured in DCE at 25 ° C.

Die beiden Vorgarne werden den ihnen zugeordneten Verstreckwerken zugeführt und dort bei einer Temperatur der Einlaufgalette von 90°C im Verhältnis von 1 : 2 verstreckt. Die Streckspannung betrug dabei für das Stehervorgarn 15 cN/tex und für das Effektvorgarn 14 cN/tex. Die verstreckten Garne wurden in 10 Windungen um die auf 230°C geheizten Auslaufgaletten der Streckwerke geführt. Dabei wurde die Garnlaufgeschwindigkeit für die beiden Streckwerke getrennt so eingeregelt, daß die Einlaufgeschwindigkeit in die Blasdüse für das Stehervorgarn 315 m/min und für das Effektvorgarn 420 m/min betrug. Das verblasene Garn wurde hinter der Blasdüse mit 300 m/min abgezogen. Hieraus resultiert eine Voreilung von 5 % (Überlieferung 1,05) für das Stehergarn und von 40 % (Überlieferung 1,40) für das Effektgarn.The two rovings are fed to the drawing units assigned to them and drawn there at a temperature of the inlet godet of 90 ° C. in a ratio of 1: 2. The draw tension was 15 cN / tex for the main roving and 14 cN / tex for the effect roving. The drawn yarns were passed in 10 turns around the outlet godets of the drafting systems, which were heated to 230 ° C. The yarn running speed for the two drafting units was adjusted separately so that the running speed into the blowing nozzle was 315 m / min for the main roving and 420 m / min for the effect roving. The blown yarn was drawn off behind the blow nozzle at 300 m / min. This results in an advance of 5% (tradition 1.05) for the main yarn and 40% (tradition 1.40) for the fancy yarn.

Nach Verlassen der Blasdüse wurde das Schlingengarn fixiert, indem es durch einen auf 240°C geheizten 160 cm langen Heißluftofen geleitet wurde.After leaving the blow nozzle, the loop yarn was fixed by passing it through a 160 cm long hot air oven heated to 240 ° C.

Das so erhaltene Rohgarn wurde aufgespult. Es hat einen Titer von 243 dtex/f64, eine Endfestigkeit von 50,7 cN/tex, eine Höchstzugkraftdehnung von 9,8 % und einen Hitzeschrumpf bei 180°C von 3,1 %.The raw yarn thus obtained was wound up. It has a titer of 243 dtex / f64, a final strength of 50.7 cN / tex, a maximum tensile strength elongation of 9.8% and a heat shrinkage at 180 ° C of 3.1%.

Nach dem Färben des Rohgarns ergeben sich folgende Kenndaten; Titer 255 dex/f64, Endfestigkeit 48 cN/tex, Höchstzugkraftdehnung 13,2 % und Hitzeschrumpf bei 180°C 0,7 %.After dyeing the raw yarn, the following characteristics result; Titer 255 dex / f64, final strength 48 cN / tex, maximum tensile elongation 13.2% and heat shrinkage at 180 ° C 0.7%.

Im Nähtest ist seine mittlere Nählänge größer als 4 000 Stiche beim Vorwärtsnähen und größer als 2 000 Stiche beim Rückwärtsnähen.In the sewing test, its average sewing length is greater than 4,000 stitches when sewing forward and greater than 2,000 stitches when sewing backward.

In analoger Weise lassen sich die in der folgenden Tabelle angegeben erfindungsgemäßen Garne herstellen.

Figure imgb0002
The yarns according to the invention indicated in the following table can be produced in an analogous manner.
Figure imgb0002

Claims (16)

1. Zweikomponenten-Schlingennähgarn aus Steher- und Effektfilamenten mit hoher Festigkeit und geringem Schrumpf aus synthetischen Polymeren, gekennzeichnet durch eine Endfestigkeit von über 40 cN/tex, einen Thermoschrumpf bei 180°C von unter 8 % und eine Höchstzugkraftdehnung von unter 18 %.1. Two-component loop sewing thread made from stand-up and effect filaments with high strength and low shrinkage from synthetic polymers, characterized by a final strength of over 40 cN / tex, a thermal shrinkage at 180 ° C of less than 8% and a maximum tensile strength elongation of less than 18%. 2. Zweikomponenten-Schlingennähgarn gemäß Anspruch 1, dadurch gekennzeichnet, daß sein Gesamttiter 200 bis 900 dtex beträgt.2. Two-component loop sewing thread according to claim 1, characterized in that its total titer is 200 to 900 dtex. 3. Zweikomponenten-Schlingennähgarn gemäß mindestens einem der Ansprüche 1 und 2, dadurch gekennzeichnet, daß die Gesamttiter der Steherfilamente und Effektfilamente in einem Verhältnis von 95 : 5 bis 70 : 30 stehen.3. Two-component loop sewing thread according to at least one of claims 1 and 2, characterized in that the total titer of the standing filaments and effect filaments are in a ratio of 95: 5 to 70: 30. 4. Zweikomponenten-Schlingennähgarn gemäß mindestens einem der Ansprüche 1 bis 3, dadurch gekennzeichnet, daß der Einzeltiter der Steherfilamente 8 bis 1,2 dtex und der Einzeltiter der Effektfilamente 4,5 bis 1 dtex beträgt und daß der Einzeltiter der Steherfilamente das 1,2- bis 6-fache des Einzeltiters der Effektfilamente ist.4. Two-component loop sewing thread according to at least one of claims 1 to 3, characterized in that the single titer of the standing filaments is 8 to 1.2 dtex and the single titer of the effect filaments is 4.5 to 1 dtex and that the single titer of the standing filaments is 1.2 - up to 6 times the individual titer of the effect filaments. 5. Zweikomponenten-Schlingennähgarn gemäß mindestens einem der Ansprüche 1 bis 4, dadurch gekennzeichnet, daß Steher- und Effektfilamente aus einem Polyester bestehen.5. Two-component loop sewing thread according to at least one of claims 1 to 4, characterized in that standing and effect filaments consist of a polyester. 6. Zweikomponenten-Schlingennähgarn gemäß Anspruch 5, dadurch gekennzeichnet, daß der Polyester eine IV von größer als 0,65 dl/g hat.6. Two-component loop sewing thread according to claim 5, characterized in that the polyester has an IV of greater than 0.65 dl / g. 7. Zweikomponenten-Schlingennähgarn gemäß mindestens einem der Ansprüche 5 und 6, dadurch gekennzeichnet, daß der Polyester Polyethylenterephthalat ist.7. Two-component loop sewing thread according to at least one of claims 5 and 6, characterized in that the polyester is polyethylene terephthalate. 8. Verfahren zur Herstellung eines Zweikomponenten-­Schlingennähgarns des Anspruchs 1, bestehend aus Steher- und Effektfilamenten durch Luftdüsentexturierung zweier der Texturierdüse mit unterschiedlicher Geschwindigkeit zugeführten Vorgarnstränge, dadurch gekennzeichnet, daß die Vorgarnstränge unterschiedliche Gesamt- und Einzelfilamenttiter aufweisen, beide jedoch aus hochfesten, schrumpf- und dehnungsarmen Filamenten bestehen.8. A method for producing a two-component loop sewing thread of claim 1, consisting of stand and effect filaments by air nozzle texturing two roving strands fed to the texturing nozzle at different speeds, characterized in that the roving strands have different total and single filament titer, but both made of high-strength, shrinkable and low stretch filaments. 9. Verfahren gemäß Anspruch 8, dadurch gekennzeichnet, daß der Texturierdüse die Steherfilamente mit einer Voreilung von 3 bis 10 %, die Effektfilamente mit einer Voreilung von 10 bis 60 % zugeführt werden.9. The method according to claim 8, characterized in that the texturing nozzle, the standing filaments with a lead of 3 to 10%, the effect filaments are fed with a lead of 10 to 60%. 10. Verfahren gemäß mindestens einem der Ansprüche 8 und 9, dadurch gekennzeichnet, daß die Gesamttiter von Steher- und Effektgarnsträngen ein Verhältnis von 95 : 5 bis 70 : 30 haben und so gewählt werden, daß unter Berücksichtigung der Voreilung ihre Summe 200 bis 900 dtex beträgt.10. The method according to at least one of claims 8 and 9, characterized in that the total denier of stand and fancy yarn skeins have a ratio of 95: 5 to 70: 30 and are chosen so that their sum 200 to 900 dtex taking into account the advance is. 11 Verfahren gemäß mindestens einem der Ansprüche 8 bis 10, dadurch gekennzeichnet, daß die Einzeltiter der der Texturierdüse zugeführten Steherfilamente 8 bis 1,2 dtex und die Einzeltiter der zugeführten Effektfilamente 4,5 bis 1 dtex betragen und daß der Einzeltiter des Steherfilaments das 1,2- bis 6-fache des Einzeltiters des Effektfilaments ist.11. The method according to at least one of claims 8 to 10, characterized in that the individual titer of the standing filaments fed to the texturing nozzle is 8 to 1.2 dtex and the single titer of the supplied effect filaments is 4.5 to 1 dtex and that the single titer of the standing filament is 1, Is 2 to 6 times the single titer of the effect filament. 12. Verfahren gemäß mindestens einem der Ansprüche 8 bis 11, dadurch gekennzeichnet, daß die hochfesten schrumpf- und dehnungsarmen Filamente der Vorgarnstränge durch Verstrecken einer teilorientierten Spinnware und eine unmittelbar anschließende, im wesentlichen schrumpffreie Wärmebehandlung erhalten werden.12. The method according to at least one of claims 8 to 11, characterized in that the high-strength, low-shrinkage and low-elongation filaments of the roving strands are obtained by stretching a partially oriented spun fabric and an immediately subsequent, essentially shrink-free heat treatment. 13. Verfahren gemäß mindestens einem der Ansprüche 8 bis 12, dadurch gekennzeichnet, daß die Verstreckbedingungen für Steher- und Effektfäden im wesentlichen gleich sind.13. The method according to at least one of claims 8 to 12, characterized in that the drawing conditions for upright and effect threads are essentially the same. 14. Verfahren gemäß mindestens einem der Ansprüche 8 bis 13, dadurch gekennzeichnet, daß die Verstreckung bei 70 bis 100°C unter einer Verstreckspannung von 10 bis 25 cN/tex, bezogen auf den verstreckten Titer, erfolgt.14. The method according to at least one of claims 8 to 13, characterized in that the drawing is carried out at 70 to 100 ° C under a drawing tension of 10 to 25 cN / tex, based on the drawn titer. 15. Verfahren gemäß mindestens einem der Ansprüche 1 bis 14, dadurch gekennzeichnet, daß die unmittelbar an die Verstreckung anschließende, im wesentliche schrumpffreie Wärmebehandlung bei einer Garnspannung von 2 bis 20 cN/tex und bei einer Temperatur von 180 bis 250°C erfolgt.15. The method according to at least one of claims 1 to 14, characterized in that the immediately following the stretching, substantially shrink-free heat treatment at a yarn tension of 2 to 20 cN / tex and at a temperature of 180 to 250 ° C. 16. Verfahren gemäß mindestens einem der Ansprüche 8 bis 15, dadurch gekennzeichnet, daß das Garn nach dem Abzug aus der Blasdüse bei einer Temperatur von 200 bis 320°C in an sich bekannter Weise fixiert wird.16. The method according to at least one of claims 8 to 15, characterized in that the yarn is fixed after removal from the blow nozzle at a temperature of 200 to 320 ° C in a conventional manner.
EP89118385A 1988-10-07 1989-10-04 Intermingled sewing-thread consisting of two components, and method for producing the same Expired - Lifetime EP0363798B1 (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
AT89118385T ATE92981T1 (en) 1988-10-07 1989-10-04 TWO-COMPONENT LOOP SEWING THREAD AND METHOD OF PRODUCTION.
EP92118877A EP0530860B1 (en) 1988-10-07 1989-10-04 Interminded sewing-thread consisting of two components, and method for producing the same

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3834139 1988-10-07
DE3834139A DE3834139A1 (en) 1988-10-07 1988-10-07 TWO-COMPONENT LOOP SEWING YARN AND METHOD FOR THE PRODUCTION THEREOF

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EP92118877A Division EP0530860B1 (en) 1988-10-07 1989-10-04 Interminded sewing-thread consisting of two components, and method for producing the same
EP92118877.7 Division-Into 1992-11-04

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EP0363798A2 true EP0363798A2 (en) 1990-04-18
EP0363798A3 EP0363798A3 (en) 1991-05-29
EP0363798B1 EP0363798B1 (en) 1993-08-11

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EP89118385A Expired - Lifetime EP0363798B1 (en) 1988-10-07 1989-10-04 Intermingled sewing-thread consisting of two components, and method for producing the same
EP92118877A Expired - Lifetime EP0530860B1 (en) 1988-10-07 1989-10-04 Interminded sewing-thread consisting of two components, and method for producing the same

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US (2) US5100729A (en)
EP (2) EP0363798B1 (en)
JP (1) JPH02145828A (en)
AT (2) ATE92981T1 (en)
DE (3) DE3834139A1 (en)
SG (1) SG83079A1 (en)

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EP0569891A1 (en) * 1992-05-12 1993-11-18 AMANN & SÖHNE GmbH & Co. Yarn and method for manufacturing a yarn
EP0569890A1 (en) * 1992-05-12 1993-11-18 AMANN & SÖHNE GmbH & Co. High tensile sewing yarn and method for manufacturing such a sewing yarn
US5344710A (en) * 1992-08-26 1994-09-06 Hoechst Aktiengesschaft Low-denier two-component loop yarns of high strength, production thereof and use thereof as sewing and embroidery yarns
EP0664352A1 (en) * 1994-01-20 1995-07-26 Hoechst Aktiengesellschaft Looped two component yarn, method for its production and its use as a sewing or embroidery thread
EP0718425A1 (en) 1994-12-07 1996-06-26 Hoechst Trevira GmbH & Co. KG Two-component intermingled sewing threads from aramid filaments, their production process and their use
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US5429868A (en) * 1990-08-17 1995-07-04 Amann & Sohne Gmbh & Co. Yarn, especially sewing yarn, and method of producing same
EP0569891A1 (en) * 1992-05-12 1993-11-18 AMANN & SÖHNE GmbH & Co. Yarn and method for manufacturing a yarn
EP0569890A1 (en) * 1992-05-12 1993-11-18 AMANN & SÖHNE GmbH & Co. High tensile sewing yarn and method for manufacturing such a sewing yarn
US5344710A (en) * 1992-08-26 1994-09-06 Hoechst Aktiengesschaft Low-denier two-component loop yarns of high strength, production thereof and use thereof as sewing and embroidery yarns
EP0664352A1 (en) * 1994-01-20 1995-07-26 Hoechst Aktiengesellschaft Looped two component yarn, method for its production and its use as a sewing or embroidery thread
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US5359759A (en) 1994-11-01
ATE142718T1 (en) 1996-09-15
SG83079A1 (en) 2001-09-18
DE58905247D1 (en) 1993-09-16
ATE92981T1 (en) 1993-08-15
EP0363798B1 (en) 1993-08-11
EP0530860B1 (en) 1996-09-11
EP0363798A3 (en) 1991-05-29
DE58909729D1 (en) 1996-10-17
DE3834139A1 (en) 1990-04-19
EP0530860A3 (en) 1993-03-24
EP0530860A2 (en) 1993-03-10
JPH02145828A (en) 1990-06-05
US5100729A (en) 1992-03-31

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