EP0427805B1 - Friction-textured polyester filament yarn, its manufacture and use - Google Patents

Friction-textured polyester filament yarn, its manufacture and use Download PDF

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Publication number
EP0427805B1
EP0427805B1 EP90904217A EP90904217A EP0427805B1 EP 0427805 B1 EP0427805 B1 EP 0427805B1 EP 90904217 A EP90904217 A EP 90904217A EP 90904217 A EP90904217 A EP 90904217A EP 0427805 B1 EP0427805 B1 EP 0427805B1
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Prior art keywords
yarn
friction
textured
filament yarn
dtex
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EP90904217A
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German (de)
French (fr)
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EP0427805A1 (en
Inventor
Klaus Fischer
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Viscosuisse SA
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Rhone Poulenc Viscosuisse SA
Societe de la Viscose Suisse SA
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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
    • D02G1/02—Producing crimped or curled fibres, filaments, yarns, or threads, giving them latent characteristics by twisting, fixing the twist and backtwisting, i.e. by imparting false twist
    • D02G1/04—Devices for imparting false twist
    • D02G1/08—Rollers or other friction causing elements
    • 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
    • D02G1/02—Producing crimped or curled fibres, filaments, yarns, or threads, giving them latent characteristics by twisting, fixing the twist and backtwisting, i.e. by imparting false twist

Definitions

  • the invention relates to a friction-textured polyester filament yarn, a process for its production and its use.
  • Friction-textured polyester yarns and their manufacturing processes are known up to a titer of 250 dtex and a usable crimp. In some cases it has even been possible to texturize polyester yarns with a titer of 330 dtex, but with the disadvantage of unsatisfactory crimping in the yarn. Such yarns are of limited use, for example, for the production of set yarns.
  • a false twist process using friction rotors and adding a wetting liquid inert to the yarns is known.
  • the titer of the treated yarns is in the range from 50 to 300 denier (56 to 330 dtex), the texturing speed is a maximum of 230 m / min.
  • the degree of crimp is at most 35% under the specified conditions. It is described that yarns with coarse titers can be subjected to false twist treatment with extreme difficulty without the addition of a liquid, even using the known method.
  • the object of the invention is to provide a friction-textured polyester yarn with a coarse titer, which can be produced without a specialized process with good crimping.
  • Another task is the use of such a yarn for the production of set yarns.
  • the object is achieved according to the invention by a polyester yarn which has a titer of 400 to 600 dtex with a crimp of at least 45%.
  • the friction-textured polyester yarn is swirled after wave two of the texturing machine, it is characterized by a number of knots of at least 60 swirling points / m, which guarantees perfect processing in warp and weft.
  • a problem with the folding and interlacing of two or more threads on a texturing machine is the uneven thread tensile forces of the different components, which leads to different thread lengths of the individual components between the knots (interlacing points), which creates an irregular surface in the fabric.
  • Another advantage, in addition to increasing throughput, is the elimination of this source of error in the case of simple texturing and swirling.
  • the process is characterized in that coarse titers can now be drawn off at a speed of at least 350 m / min with a thread tension ratio of F2 / F1 ⁇ 1.
  • Friction swirlers have proven particularly suitable as those which are commercially available under the name "RINGTEX” from BARMAG / BRD and NIPTWISTER from MURATA, Japan.
  • the friction-textured coarse yarn is ideally suited for the production of a set yarn with a crimp of less than or equal to 30%.
  • the coarse yarn can be processed immediately as an intermediate product without any further process step.
  • a polyester yarn with at least 85% by weight of ethylene terephthalate units was used as the master yarn.
  • the following table 1 shows the texturing machine setting when using RINGTEX units.
  • a prerequisite for a perfect yarn that does not cause a fabric jump after washing is the setting of the thread tension ratio F2 / F1 ⁇ 1.
  • Table 2 shows the machine settings when using NIPTWISTER units.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Textile Engineering (AREA)
  • Yarns And Mechanical Finishing Of Yarns Or Ropes (AREA)
  • Woven Fabrics (AREA)

Abstract

A friction-textured polyester filament yarn with a count in the range 400 to 600 dtex is an HE with a crimp of at least 45 %. In a process for manufacturing the textured yarn, a smooth yarn in the above-mentioned coarse count range is textured over a clamping twister at at least 350 m/min and a yarn tensile force ration F2/F1 less than 1. The resultant textured filament yarn can be used to manufacture a set yarn with a crimp of less than 30 %.

Description

Die Erfindung betrifft ein friktionstexturiertes Polyesterfilamentgarn, ein Verfahren zu dessen Herstellung sowie dessen Verwendung.The invention relates to a friction-textured polyester filament yarn, a process for its production and its use.

Friktionstexturierte Polyestergarne sowie deren Herstellungsverfahren sind bis zu einem Titer von 250 dtex und einer brauchbaren Einkräuselung bekannt. Dabei ist es vereinzelt sogar gelungen, Polyestergarne mit einem Titer von 330 dtex zu texturieren, jedoch mit dem Nachteil einer unbefriedigenden Einkräuselung im Garn. Solche Garne sind beispielsweise zur Herstellung von Set-Garnen nur bedingt brauchbar.Friction-textured polyester yarns and their manufacturing processes are known up to a titer of 250 dtex and a usable crimp. In some cases it has even been possible to texturize polyester yarns with a titer of 330 dtex, but with the disadvantage of unsatisfactory crimping in the yarn. Such yarns are of limited use, for example, for the production of set yarns.

Nach der DE-A-2 001 120 ist ein Falschzwirnverfahren unter Verwendung von Reibungsrotoren und unter Zugabe einer für die Garne inerten Benetzungsflüssigkeit bekannt. Der Titer der behandelten Garne liegt im Bereich von 50 bis 300 Denier (56 bis 330 dtex), die Texturiergeschwindigkeit bei maximal 230 m/min. Der Einkräuselungsgrad beträgt unter den angegebenen Bedingungen höchstens 35 %. Es wird beschrieben, dass ohne Zugabe einer Flüssigkeit auch nach dem bekannten Verfahren Garne mit groben Titern äusserst schwierig einer Falschzwirnbehandlung unterzogen werden können.According to DE-A-2 001 120, a false twist process using friction rotors and adding a wetting liquid inert to the yarns is known. The titer of the treated yarns is in the range from 50 to 300 denier (56 to 330 dtex), the texturing speed is a maximum of 230 m / min. The degree of crimp is at most 35% under the specified conditions. It is described that yarns with coarse titers can be subjected to false twist treatment with extreme difficulty without the addition of a liquid, even using the known method.

Es besteht aus produktivitätssteigernden Gründen schon lange ein Bedürfnis, auch Grobtiter >330 dtex zu texturieren. Nach allgemeiner Lehre gilt, dass Garne über 250 dtex nur unter erheblicher Einbusse der Einkräuselung nach dem Friktionsverfahren texturiert werden können, da das von konventionellen Friktionsscheibenaggregaten auf den Faden übertragbare Torsionsmoment so begrenzt ist, dass die zur Erzielung einer guten Einkräuselung erforderliche Garndrehung nicht erreicht werden kann. Dementsprechend ist auch der Anwendungsbereich aller Texturiermaschinen in den Maschinenspezifikationen auf den Titerbereich <250 bis 330 dtex begrenzt.For productivity-enhancing reasons, there has long been a need to texture coarse titers> 330 dtex. According to general teaching, yarns over 250 dtex can only be textured with considerable loss of crimping using the friction method, since the torsional moment that can be transferred to the thread by conventional friction disc units is so limited that the yarn twist required to achieve good crimping cannot be achieved . Accordingly, the area of application of all texturing machines is limited in the machine specifications to the titer range <250 to 330 dtex.

Bisher hat man sich damit beholfen, grobe Texturgarntiter durch Fachen feiner Garne herzustellen. Das bedeutet, wenn das Fachen auf der Texturiermaschine geschieht, eine Einbusse der Kapazität entsprechend der Anzahl gefachter Fäden, oder aber die Notwendigkeit eines separaten Prozesses.So far, it has been used to produce coarse texture yarn titers by folding fine yarns. This means that if the piling takes place on the texturing machine, a loss in capacity corresponding to the number of ply threads, or the need for a separate process.

Aufgabe der Erfindung ist es, ein friktionstexturiertes Polyestergarn mit einem groben Titer zur Verfügung zu stellen, das ohne Fachprozess bei guter Einkräuselung hergestellt werden kann.The object of the invention is to provide a friction-textured polyester yarn with a coarse titer, which can be produced without a specialized process with good crimping.

Eine weitere Aufgabe ist in der Verwendung eines solchen Garnes zur Herstellung von Set-Garnen zu sehen.Another task is the use of such a yarn for the production of set yarns.

Die Aufgabe wird erfindungsgemäss durch ein Polyestergarn gelöst, das einen Titer von 400 bis 600 dtex mit einer Einkräuselung von wenigsten 45 % aufweist.The object is achieved according to the invention by a polyester yarn which has a titer of 400 to 600 dtex with a crimp of at least 45%.

Es ist in überraschender Weise gelungen, bei voller Kapazitätsauslastung der Maschinen grobe Texturgarne in einem Geschwindigkeitsbereich herzustellen, so dass gegenüber dem bisher üblichen Fachprozess eine Durchsatzsteigerung von bis zu 75 % erzielt werden kann.Surprisingly, it was possible to produce coarse texture yarns in one speed range with full capacity utilization of the machines, so that a throughput increase of up to 75% can be achieved compared to the previously used specialist process.

Wird das so friktionstexturierte Polyestergarn nach Welle zwei der Texturiermaschine verwirbelt, zeichnet es sich durch eine Knotenzahl von wenigsten 60 Verwirbelungspunkten /m aus, womit eine einwandreie Verarbeitung in Kette und Schuss gewährleistet ist.If the friction-textured polyester yarn is swirled after wave two of the texturing machine, it is characterized by a number of knots of at least 60 swirling points / m, which guarantees perfect processing in warp and weft.

Ein Problem beim Fachen und Verwirbeln von zwei und mehr Fäden auf einer Texturiermaschine besteht in den ungleichen Fadenzugkräften der verschiedenen Komponenten, was zu unterschiedlichen Fadenlängen der Einzelkomponenten zwischen den Knoten (Verwirbelungspunkten) führt, wodurch im Gewebe eine unregelmässige Oberfläche entsteht.A problem with the folding and interlacing of two or more threads on a texturing machine is the uneven thread tensile forces of the different components, which leads to different thread lengths of the individual components between the knots (interlacing points), which creates an irregular surface in the fabric.

Ein weiterer Vorteil, neben der Durchsatzsteigerung, ist bei einfächiger Texturierung und Verwirbelung die Beseitigung dieser Fehlerquelle.Another advantage, in addition to increasing throughput, is the elimination of this source of error in the case of simple texturing and swirling.

Das Verfahren zeichnet sich dadurch aus, dass nunmehr Grobtiter bei einer Geschwindigkeit von wenigstens 350 m/min mit einem Fadenzugkraftverhältnis von F₂/F₁ < 1 abgezogen werden können.The process is characterized in that coarse titers can now be drawn off at a speed of at least 350 m / min with a thread tension ratio of F₂ / F₁ <1.

Versuchsweise mit konventionellen Scheibenfriktionsaggregaten hergestellte Grobtitergarne zeigten nach der Weiterverarbeitung zu Geweben, dass die Flächengebilde beim Waschen einen Breiteneinsprung bis zu 50 % aufweisen, also unbrauchbar waren. Als Ursache stellte sich die für einen stabilen Prozess notwendige hohe Fadenzugkraft F2 beraus. Mit klemmenden Friktionsdrallgebern lässt sich die Fadenzugkraft F2 bei stabilem Prozess soweit absenken, dass dieser Fehler nicht mehr auftritt.After further processing into fabrics, coarse titer yarns produced with conventional disc friction units experimentally showed that the fabrics had a width increase of up to 50% during washing, ie they were unusable. The cause was the high thread tension F2 necessary for a stable process. If the process is stable, the friction pulling force F2 can be reduced to such an extent that this error no longer occurs with jamming friction swirlers.

Als Friktionsdrallgeber (klemmend) haben sich insbesondere solche als geeignet erwiesen, die unter der Bezeichnung "RINGTEX" der Firma BARMAG/BRD und NIPTWISTER der Firma MURATA, Japan im Handel sind.Friction swirlers (jamming) have proven particularly suitable as those which are commercially available under the name "RINGTEX" from BARMAG / BRD and NIPTWISTER from MURATA, Japan.

Es ist überraschend, dass die mit den klemmenden Drallgebern hergestellten Grobtitergarne Einkräuselungswerte aufweisen, die im Bereich derjenigen liegen, die mit normaler Scheibenfriktion bisher nur bei niedrigen Titern, beispielsweise bei dem normalerweise zum Fachen benützten Titer 167 dtex, erreicht werden konnten.It is surprising that the coarse-titer yarns produced with the clamping twist encoders have crimping values which are in the range of those which, with normal disk friction, have hitherto only been possible with low titers, for example with the titer 167 dtex, which is normally used for the subject.

Das friktionstexturierte Grobgarn ist hervorragend geeignet zur Herstellung eines Setgarnes mit einer Einkräuselung von weniger oder gleich 30 %. Dabei kann das Grobgarn als Zwischenprodukt ohne weiteren Verfahrensschritt sofort weiterverarbeitet werden.The friction-textured coarse yarn is ideally suited for the production of a set yarn with a crimp of less than or equal to 30%. The coarse yarn can be processed immediately as an intermediate product without any further process step.

Die Erfindung soll anhand von Beispielen näher beschrieben werden.The invention will be described in more detail by means of examples.

Als Vorlagegarn diente ein Polyestergarn mit wenigstens 85 Gew. % Ethylenterephthalat-Einheiten.A polyester yarn with at least 85% by weight of ethylene terephthalate units was used as the master yarn.

Beispiel 1example 1

Aus der folgenden Tabelle 1 geht die Texturiermaschineneinstellung bei Verwendung von RINGTEX-Aggregaten hervor.

Figure imgb0001
Figure imgb0002
 The following table 1 shows the texturing machine setting when using RINGTEX units.
Figure imgb0001
Figure imgb0002

Voraussetzung für ein einwandfreies Garn, das keinen Gewebesprung nach dem Waschen hervorruft, ist die Einstellung des Fadenzugkraftverhältnisses F₂/F₁ < 1.A prerequisite for a perfect yarn that does not cause a fabric jump after washing is the setting of the thread tension ratio F₂ / F₁ <1.

Beispiel 2:Example 2:

Tabelle 2 gibt die Maschineneinstellungen bei Verwendung von NIPTWISTER-Aggregaten wieder.

Figure imgb0003
Figure imgb0004
 Table 2 shows the machine settings when using NIPTWISTER units.
Figure imgb0003
Figure imgb0004

Die Texturierergebnisse sind in der Tabelle 3 aufgeführt.

Figure imgb0005
The texturing results are shown in Table 3.
Figure imgb0005

Obwohl die groben Titer erwartungsgemäss eine deutlich gröbere Kräuselstruktur aufweisen und somit tiefere EK-Werte zu erwarten wären, werden fast gleiche Kräuselwerte (Texturmat) gemessen wie bei dtex 167.Although, as expected, the coarse titers have a significantly coarser crimp structure and thus lower EK values would be expected, almost the same crimp values (texture mat) are measured as for dtex 167.

Erfindungsgemäss ist es erstmals möglich, bei reduzierter (angepasster) Geschwindigkeit (wegen Heizleistung) mit den neuen klemmenden Drallgebern auch Titer bis 500 dtex zu texturieren, ohne im Kräuselvolumen gegenüber gefachten Garnen deutlich abzufallen.According to the invention, it is now possible for the first time to texture titers up to 500 dtex at reduced (adapted) speed (due to heating power) with the new clamping twist generators without significantly decreasing in the crimp volume compared to folded yarns.

Die Texturiergeschwindigkeit ist für diese Titer immer noch so hoch, dass sie für die zu fachenden Einfachgarne mehr als 50 % höher sein müsste, um den gleichen Durchsatz/Masch. zu erreichen.The texturing speed for these titers is still so high that it would have to be more than 50% higher for the single yarn to be shed in order to achieve the same throughput / mesh. to reach.

Claims (4)

  1. A friction texturized polyester filament yarn characterized by a titre of 400 to 600 dtex and a crimpability of at least 45 %.
  2. A friction textured polyester filament yarn according to claim 1, characterized by at least 60 slubs/m after interlacing.
  3. A method of making the friction textured filament yarn according to claim 1, characterized in that a flat yarn having a titre of 400 to 600 dtex (nominal) is passed at a rate of at least 350 m/min and a yarn tension ratio, F2/F1 < 1 via a squeezing twister, wherein said F1 is the yarn tension in said yarn upstream of said squeezing twister and wherein F2 is the yarn tension of said yarn immediately downstream of said squeezing twister.
  4. Use of the filament yarn according to claims 1 and 2 for producing a set yarn with a crimpability of < 30%.
EP90904217A 1989-03-23 1990-03-19 Friction-textured polyester filament yarn, its manufacture and use Expired - Lifetime EP0427805B1 (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
CH1095/89 1989-03-23
CH109589 1989-03-23
PCT/CH1990/000076 WO1990011394A1 (en) 1989-03-23 1990-03-19 Friction-textured polyester filament yarn, its manufacture and use

Publications (2)

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EP0427805A1 EP0427805A1 (en) 1991-05-22
EP0427805B1 true EP0427805B1 (en) 1994-05-18

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EP90904217A Expired - Lifetime EP0427805B1 (en) 1989-03-23 1990-03-19 Friction-textured polyester filament yarn, its manufacture and use

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EP (1) EP0427805B1 (en)
JP (1) JPH03504880A (en)
KR (1) KR920700320A (en)
CA (1) CA2029908A1 (en)
DE (1) DE59005735D1 (en)
ES (1) ES2055422T3 (en)
WO (1) WO1990011394A1 (en)

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5579629A (en) * 1989-03-23 1996-12-03 Rhone-Poulenc Viscosuisse S.A. Method of producing a friction texturized polyester filament yarn and yarn made thereby

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2001120A1 (en) * 1970-01-12 1971-07-15 Teijin Ltd False twist process
DE3300605A1 (en) * 1981-06-26 1984-06-07 Barmag Barmer Maschinenfabrik Ag, 5630 Remscheid Friction false twister
JPS6214656A (en) * 1985-07-12 1987-01-23 Canon Inc Electrophotographic sensitive body

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CA2029908A1 (en) 1990-09-24
ES2055422T3 (en) 1994-08-16
KR920700320A (en) 1992-02-19
WO1990011394A1 (en) 1990-10-04
JPH03504880A (en) 1991-10-24
DE59005735D1 (en) 1994-06-23
EP0427805A1 (en) 1991-05-22

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