EP0161572B1 - Method for making a blended yarn - Google Patents

Method for making a blended yarn Download PDF

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Publication number
EP0161572B1
EP0161572B1 EP85105199A EP85105199A EP0161572B1 EP 0161572 B1 EP0161572 B1 EP 0161572B1 EP 85105199 A EP85105199 A EP 85105199A EP 85105199 A EP85105199 A EP 85105199A EP 0161572 B1 EP0161572 B1 EP 0161572B1
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EP
European Patent Office
Prior art keywords
yarn
staple fiber
filament yarn
filament
yarns
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Expired
Application number
EP85105199A
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German (de)
French (fr)
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EP0161572A1 (en
Inventor
Albert Rebsamen
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Heberlein AG
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Heberlein Maschinenfabrik AG
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Publication of EP0161572A1 publication Critical patent/EP0161572A1/en
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    • 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
    • D02G1/18—Producing crimped or curled fibres, filaments, yarns, or threads, giving them latent characteristics by combining fibres, filaments, or yarns, having different shrinkage characteristics
    • 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
    • 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
    • D02G1/16—Producing crimped or curled fibres, filaments, yarns, or threads, giving them latent characteristics using jets or streams of turbulent gases, e.g. air, steam
    • D02G1/161—Producing crimped or curled fibres, filaments, yarns, or threads, giving them latent characteristics using jets or streams of turbulent gases, e.g. air, steam yarn crimping air jets
    • 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
    • D02G3/32—Elastic yarns or threads ; Production of plied or cored yarns, one of which is elastic
    • D02G3/328—Elastic yarns or threads ; Production of plied or cored yarns, one of which is elastic containing elastane
    • D—TEXTILES; PAPER
    • D02—YARNS; MECHANICAL FINISHING OF YARNS OR ROPES; WARPING OR BEAMING
    • D02J—FINISHING OR DRESSING OF FILAMENTS, YARNS, THREADS, CORDS, ROPES OR THE LIKE
    • D02J1/00—Modifying the structure or properties resulting from a particular structure; Modifying, retaining, or restoring the physical form or cross-sectional shape, e.g. by use of dies or squeeze rollers
    • D02J1/08—Interlacing constituent filaments without breakage thereof, e.g. by use of turbulent air streams

Definitions

  • Blended yarns are known in which one component consists of synthetic filaments and the other component consists of spun natural fibers.
  • synthetic filaments e.g. strength, low price
  • natural fibers e.g. handle and wearing properties of products made from them.
  • a process for producing a mixed yarn is described in which a false twist textured filament yarn with a carrier yarn, e.g. a staple fiber yarn made from natural fibers.
  • twisting or twisting is required, which limits the production speed of the mixed yarn.
  • a blended yarn which, according to US-A-4196 574, can be produced by combining a filament yarn coming directly from a false twist texturing device with a spun yarn in an air swirl nozzle.
  • the filament yarn coming directly from the false twist texturing device not only offers good conditions for interweaving with the spun yarn, but it also tends to contract in the mixed yarn when the tension is relaxed, with the spun yarn, which cannot contract, between the interweaving points is laterally bent out so that the spun yarn fiber structure clearly stands out.
  • this method has the disadvantage that it is not possible for the false twist texturing device and the air swirling nozzle to operate at optimum speeds at the same time, because the filament yarn passes through both devices immediately one after the other.
  • the object of the invention is to avoid these disadvantages and to provide a method for producing a mixed yarn from at least one false twist-textured filament yarn and at least one spun-turned staple fiber yarn in an air vortex nozzle, in which the working speed of the air vortex nozzle can be freely selected, but nevertheless the filament yarn can be processed -slide-resistant with the staple fiber yarn. can be braided and can contract in the finished mixed yarn in the desired manner, so that the staple fiber yarn is bent out laterally between the interlacing points.
  • the object is achieved according to the invention in a method of the type specified in the preamble of patent claim 1 in that the false-twisted textured filament yarn is first stretched for the ripple reactivation after being pulled off the bobbin before it is delivered to the air vortex nozzle with the release which causes a ripple under relaxation is fed.
  • the air swirl nozzle is simultaneously a stretched auxiliary thread made of elastomer fibers, e.g., the filament yarn and the staple fiber yarn.
  • a polyurethane thread is fed, which is also interwoven with these yarns at the points of interweaving between filament yarn and staple fiber yarn.
  • the purpose of the elastic auxiliary thread is to increase the crimp contraction behavior of the false twist-textured filament yarn and thus to considerably increase the bulk and the elastic behavior of the mixed yarn.
  • FIG. 1 schematically shows a method for producing a blended yarn.
  • Two false twisted textured filament yarns 1 and 1 'made of synthetic, thermoplastic continuous filaments, a spun-turned staple fiber yarn 2 made of natural fibers of plant and / or animal origin and a rubber-elastic polyurethane thread 3 are passed together through an air vortex nozzle 10 of known type and intertwined in places in this.
  • the air swirl nozzle 10 has in the usual way an axial passage channel through which the fila ment yarns 1 and 1 ', the staple fiber yarn 2 and the polyurethane thread 3 are passed together.
  • Air-blowing ducts open laterally into the axial passage duct.
  • the mixed yarn 4 thus formed is wound up in a winding device 11.
  • the staple fiber yarn 2 is supplied by a delivery unit 12 into the air swirl nozzle 10 with a defined speed and a desired tension.
  • the feed mechanism 12 draws the yarn 2 from a bobbin 14 via a thread brake 13.
  • the filament yarns 1 and 1 ' are supplied to the air swirl nozzle 10 by a supply unit 15.
  • the delivery unit 15 draws the yarns 1 and 1 'from two spools 17 and 17' via a thread brake 16 or 16 ', preferably an adjustable hysteresis brake.
  • the false twist-textured filament yarns 1 and 1 ' are stretched between the feed mechanism 15 and the thread brakes 16 and 16', preferably by about 3 to 10% or with a tensile force of about 0.7 to 2.6 cN / dtex, and experienced thereby a ripple reactivation.
  • the delivery unit 15 delivers the filament yarns 1 and 1 'with a preselected delivery to the air vortex nozzle 10, for example with an delivery of about 5 to 10%, based on the speed of the staple fiber yarn 2.
  • the filament yarns 1 and 1' are thereby between the delivery unit 15 and the air vortex nozzle 10 relaxed so that they can fully ripple.
  • the filament yarns are brought into a state in which they can be optimally interlaced in places in the air vortex nozzle 10 with the staple fiber yarn 2, so that the interlacing points produced are sufficiently resistant to processing and sliding.
  • the filament yarns 1 and 1 'crimped in the manner described then have the tendency to contract and to bend the staple fiber yarn 2 laterally between the interlacing points, so that the natural fiber structure in the mixed yarn clearly emerges.
  • a polyurethane thread 3 When a polyurethane thread 3 is used, it is supplied by an unwinding device 18 at a speed which is lower than the speed of the staple fiber yarn 2. The polyurethane thread 3 is therefore brought together with the staple fiber thread 2 in the stretched state. However, the polyurethane thread 3 and the unwinding device 18 can also be omitted.
  • a cotton yarn N m 60/1 is used as the staple fiber yarn 2, which is supplied by the delivery unit 12 at a speed of 500 m / min. is supplied into the air swirl nozzle 10.
  • the winding device 11 causes a tensile force of 10 cN in the yarn 2.
  • filament yarns 1 and 1 ' two highly elastic false twist textured polyester yarns dtex 78 f 34 HE (Z) are used, which are stretched between the thread brakes 16 and 16' and the feed unit 15 with a tensile force of 55 cN each.
  • the delivery unit 15 conveys the filament yarns at a speed of 540 m / min. to the air swirl nozzle 10.
  • the polyurethane thread 3 is a “elastane” thread dtex 45, which is taken from the unwinder 18 at a speed of 150 m / min. is delivered.
  • a cotton yarn N m 30/1 is used as the staple fiber yarn 2, which is supplied by the delivery unit 12 at a speed of 400 m / min. is supplied into the air swirl nozzle 10.
  • the thread tension is 12 cN.
  • two highly elastic false twist-textured polyester yarns dtex 167 f 34 HE (Z) are used, which are stretched between the thread brakes 16 and 16' and the feed mechanism 15 with a tensile force of 160 cN each and by the feed mechanism 15 a speed of 428 m / min. are delivered to the air swirl nozzle 10.
  • the polyurethane thread is omitted in this example.
  • the staple fiber yarn 2 is a cotton yarn N m 60/1, which at a speed of 300 m / min. is drawn through the air swirl nozzle 10.
  • the thread tension is 8 cN.
  • the filament yarn 1 is a highly elastic false twist textured polyester yarn dtex 78 f 34 HE (Z), which is stretched between the thread brake 16 and the feed mechanism 15 with a tensile force of 65 cN and from the feed mechanism at a speed of 318 m / min. is delivered to the air swirl nozzle 10.
  • FIG. 2 schematically shows a preferred arrangement of the device parts described with reference to FIG. 1.
  • the device shown in Fig. 2 has two creels 20 and 20 ', in which the coils 14 and 17 and 17' are housed.
  • a winding machine 21 is arranged directly in front of the creel 20, to which the thread brakes 13 and 16, the delivery mechanisms 12 and 15, the air swirl nozzle 10 and the winding device 11 belong.
  • the unwinding device 18 for the polyurethane thread 3 can also be arranged on the winding machine 21.
  • the arrangement of the winding machine 21 directly in front of the creel 20 has the advantage that the two can be assigned a common suction device, which has a suction nozzle for the fiber fly both in the winding device 11 of the winding machine and in the staple fiber yarn bobbin 14 in the creel 20.
  • the device can of course have a large number of work stations of the type described.
  • a mixed yarn is shown as it can be produced in the manner described from a false twist-textured filament yarn 1 and a staple fiber yarn 2 by means of an air swirl nozzle.
  • the filament yarn 1 and the staple fiber yarn 2 are interlaced at spaced-apart locations V in a manner that prevents them from sliding during processing, while they are between the interlacing put V bundled next to each other.
  • the distance between two adjacent interweaving points V in the stretched state of the blended yarn, that is under a load of 0.3 cN / dtex, as shown in FIG. 3, is denoted by I x .
  • the average distance l x is 5 to 50 mm, depending on the type of air vortex nozzle used, the pressure of the blown air supplied, the tension of the staple fiber yarn passing through the air vortex nozzle and the size of the delivery with which the false-twisted textured filament yarn is fed to the air vortex nozzle .
  • the interlacing points V are distributed approximately uniformly or at irregular intervals l x over the length of the blended yarn.
  • Fig. 4 the blended yarn of Fig. 3 is shown in the unstretched state, that is under a load of 0.0005 cN / dtex.
  • the filament yarn 1 has contracted.
  • the staple fiber yarn 2, which practically cannot contract, is thereby laterally bent out at the unbound points between the interweaving points V.
  • the distance between the axis of the filament yarn 1 and the axis of the bent staple fiber yarn 2 at the point farthest from the axis of the filament yarn 1 is denoted by ly.
  • the distances ly are on average at least 10% of the mean distance I x according to FIG. 3.
  • auxiliary thread 3 made of elastomer fibers, e.g. contains a polyurethane thread.
  • the auxiliary thread 3 is also intertwined with the two yarns 1 and 2 and held in the same.
  • the spacing of the interweaving points V is reduced by the elastic force of the auxiliary thread 3.
  • the staple fiber yarn 2 is therefore laterally bent out between the interlacing points V, as a result of which the bulk of the mixed yarn is considerably increased.

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  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • Yarns And Mechanical Finishing Of Yarns Or Ropes (AREA)

Description

Es sind Mischgarne bekannt, in denen eine Komponente aus synthetischen Filamenten und die andere Komponente aus gesponnenen Naturfasern besteht. Damit hat man versucht, gewisse vorteilhafte Eigenschaften von synthetischen Filamenten (z.B. Festigkeit, günstiger Preis) mit den Eigenschaften von Naturfasern (z.B. Griff und Trageigenschaften von daraus hergestellten Produkten) zu verbinden. Beispielsweise in der CH-A-491 219 ist ein Verfahren zur Herstellung eines Mischgarns beschrieben, in welchem ein falschzwirn-texturiertes Filamentgarn mit einem Trägergarn, z.B. einem Stapelfasergarn aus Naturfasern, kombiniert wird. Um dieses Mischgarn verarbeitungs-schiebefest zu machen (so dass es z.B. auf Web- oder Wirkmaschinen verarbeitet werden kann), ist dabei eine Verzwirnung oder Umzwirnung erforderlich, wodurch die Herstellungsgeschwindigkeit des Mischgarns beschränkt ist. Diese Beschränkung vermeidet das in der JP-A-52-88640 beschriebene Verfahren, in welchem ein Filamentgarn und ein Stapelfasergarn mittels eines Verflechtungsaggregates stellenweise miteinander verflochten werden. Die bekannten Mischgarne sind mit dem Nachteil behaftet, dass sie einen recht hohen Anteil an Stapelfasergarn aus Naturfasern enthalten müssen, wenn die Eigenschaften des Naturfasergarns, z.B. Griff und Aussehen, in mit den Mischgarnen hergestellten Flächengebilden (z.B. Geweben oder Gewirken) deutlich erkennbar sein sollen.Blended yarns are known in which one component consists of synthetic filaments and the other component consists of spun natural fibers. An attempt was made to combine certain advantageous properties of synthetic filaments (e.g. strength, low price) with the properties of natural fibers (e.g. handle and wearing properties of products made from them). For example, in CH-A-491 219 a process for producing a mixed yarn is described in which a false twist textured filament yarn with a carrier yarn, e.g. a staple fiber yarn made from natural fibers. In order to make this mixed yarn resistant to processing and sliding (so that it can be processed, for example, on weaving or knitting machines), twisting or twisting is required, which limits the production speed of the mixed yarn. This limitation avoids the method described in JP-A-52-88640, in which a filament yarn and a staple fiber yarn are intertwined in places by means of a braiding unit. The known blended yarns have the disadvantage that they must contain a fairly high proportion of staple fiber yarn made from natural fibers if the properties of the natural fiber yarn, e.g. Handle and appearance, should be clearly recognizable in fabrics made with the mixed yarns (e.g. woven or knitted fabrics).

Eine Verbesserung in dieser Hinsicht ist mit einem Mischgarn möglich, das gemäss der US-A-4196 574 durch Kombinieren eines unmittelbar aus einer Falschzwirn-Texturiereinrichtung kommenden Filamentgarns mit einem gesponnenen Garn in einer Luftwirbeldüse hergestellt werden kann. Das unmittelbar aus der Falschzwirn-Texturiereinrichtung kommende Filamentgarn bietet nicht nur gute Voraussetzungen für die Verflechtung mit dem gesponnenen Garn, sondern es hat im Mischgarn auch die Tendenz, sich bei Entspannung zusammenzuziehen, wobei das gesponnene Garn, das sich nicht zusammenziehen kann, zwischen den Verflechtungsstellen seitlich ausgebogen wird, so dass die Spinngarnfaserstruktur deutlich hervortritt. Dieses Verfahren hat jedoch den Nachteil, dass es nicht möglich ist, die Falschzwirn-Texturiereinrichtung und die Luftwirbeldüse gleichzeitig je mit optimalen Geschwindigkeiten arbeiten zu lassen, weil das Filamentgarn beide Einrichtungen unmittelbar nacheinander durchläuft. In der genannten US-A-4196 574 - und ähnlich in der US-A-4212152 - wird zwar auch vorgeschlagen, anstelle des unmittelbar aus der Falschzwirn-Texturiereinrichtung kommenden Filamentgarns ein zuvor fertig falschzwirn-texturiertes Filamentgarn zu verwenden, das von einer Spule abgezogen wird. So kann zwar die Arbeitsgeschwindigkeit der Luftwirbeldüse unabhängig von derjenigen der Falschzwirn-Texturiereinrichtung frei gewählt werden, jedoch zeigt es sich, dass das von einer Spule abgezogene falschzwirn-texturierte Filamentgarn einserseits weniger gut für die Verflechtung mit dem gesponnenen Garn geeignet ist, so dass die in der Luftwirbeldüse erzeugten Verflechtungsstellen ungenügend verarbeitungs-schiebefest sind, und anderseits im erhaltenen Mischgarn sich weniger zusammenzieht als das unmittelbar aus der Falschzwirn-Texturiereinrichtung kommende Filamentgarn.An improvement in this regard is possible with a blended yarn which, according to US-A-4196 574, can be produced by combining a filament yarn coming directly from a false twist texturing device with a spun yarn in an air swirl nozzle. The filament yarn coming directly from the false twist texturing device not only offers good conditions for interweaving with the spun yarn, but it also tends to contract in the mixed yarn when the tension is relaxed, with the spun yarn, which cannot contract, between the interweaving points is laterally bent out so that the spun yarn fiber structure clearly stands out. However, this method has the disadvantage that it is not possible for the false twist texturing device and the air swirling nozzle to operate at optimum speeds at the same time, because the filament yarn passes through both devices immediately one after the other. In the aforementioned US-A-4196 574 - and similarly in US-A-4212152 - it is also proposed to use a previously finished false-twisted textured filament yarn instead of the filament yarn coming directly from the false twist texturing device, which is drawn off from a spool becomes. So the working speed of the air vortex nozzle can be chosen independently of that of the false twist texturing device, but it turns out that the false twisted textured filament yarn drawn off from a bobbin is on the one hand less suitable for interweaving with the spun yarn, so that the in of the entanglements created in the air vortex are insufficiently resistant to processing and sliding, and on the other hand, the mixed yarn obtained contracts less than the filament yarn coming directly from the false twist texturing device.

Die Aufgabe der Erfindung besteht darin, diese Nachteile zu vermeiden und ein Verfahren zum Herstellen eines Mischgarns aus mindestens einem falschzwirn-texturierten Filamentgarn und mindestens einem spinngedrehten Stapelfasergarn in einer Luftwirbeldüse anzugeben, in welchem die Arbeitsgeschwindigkeit der Luftwirbeldüse frei wählbar ist, trotzdem aber das Filamentgarn verarbeitungs-schiebefest mit dem Stapelfasergarn ver- . flochten werden kann und sich im fertigen Mischgarn in erwünschter Weise zusammenziehen kann, so dass das Stapelfasergarn zwischen den Verflechtungsstellen seitlich ausgebogen wird.The object of the invention is to avoid these disadvantages and to provide a method for producing a mixed yarn from at least one false twist-textured filament yarn and at least one spun-turned staple fiber yarn in an air vortex nozzle, in which the working speed of the air vortex nozzle can be freely selected, but nevertheless the filament yarn can be processed -slide-resistant with the staple fiber yarn. can be braided and can contract in the finished mixed yarn in the desired manner, so that the staple fiber yarn is bent out laterally between the interlacing points.

Die Aufgabe wird bei einem Verfahren der im Oberbegriff des Patentanspruchs 1 angegebenen Art erfindungsgemäss dadurch gelöst, dass das falschzwirn-texturierte Filamentgarn nach dem Abziehen von der Spule zuerst zur Kräuselungs-Reaktivierung gedehnt wird, bevor es der Luftwirbeldüse mit der eine Auskräuselung unter Entspannung bewirkenden Überlieferung zugeführt wird.The object is achieved according to the invention in a method of the type specified in the preamble of patent claim 1 in that the false-twisted textured filament yarn is first stretched for the ripple reactivation after being pulled off the bobbin before it is delivered to the air vortex nozzle with the release which causes a ripple under relaxation is fed.

In einer bevorzugten Ausführungsform wird der Luftwirbeldüse gleichzeitig mit dem Filamentgarn und dem Stapelfasergarn auch noch ein gedehnter Hilfsfaden aus Elastomerfasern, z.B. ein Polyurethan-Faden, zugeführt, der an den Verflechtungsstellen zwischen Filamentgarn und Stapelfasergarn ebenfalls mit diesen Garnen verflochten wird. Der elastische Hilfsfaden hat den Zweck, das Kräuselkontraktionsverhalten des falschzwirn-texturierten Filamentgarns zu verstärken und damit die Voluminosität und das elastische Verhalten des Mischgarns beträchtlich zu erhöhen.In a preferred embodiment, the air swirl nozzle is simultaneously a stretched auxiliary thread made of elastomer fibers, e.g., the filament yarn and the staple fiber yarn. a polyurethane thread is fed, which is also interwoven with these yarns at the points of interweaving between filament yarn and staple fiber yarn. The purpose of the elastic auxiliary thread is to increase the crimp contraction behavior of the false twist-textured filament yarn and thus to considerably increase the bulk and the elastic behavior of the mixed yarn.

Ausführungsbeispiele der Erfindung werden nachstehend anhand der Zeichnungen näher erläutert. In diesen zeigen:

  • Fig. 1 eine Skizze zur Erläuterung von Verfahren zum Herstellen von Mischgarnen,
  • Fig. 2 schematisch eine bevorzugte Anordnung von Vorrichtungsteilen,
  • Fig. 3 schematisch einen Ausschnitt aus einem nach der Erfindung hergestellten Mischgarn in gespanntem Zustand,
  • Fig. 4 dasselbe Mischgarn in entspanntem Zustand und
  • Fig. 5 schematisch einen Ausschnitt aus einem Mischgarn, das zusätzlich einen Polyurethan-Faden enthält.
Embodiments of the invention are explained below with reference to the drawings. In these show:
  • 1 is a sketch for explaining methods for producing blended yarns,
  • 2 schematically shows a preferred arrangement of device parts,
  • 3 schematically shows a section of a mixed yarn produced according to the invention in a tensioned state,
  • Fig. 4 the same blended yarn in a relaxed state and
  • Fig. 5 shows schematically a section of a blended yarn that additionally contains a polyurethane thread.

Die Fig. 1 zeigt schematisch ein Verfahren zum Herstellen eines Mischgarns. Zwei falschzwirn-texturierte Filamentgarne 1 und 1' aus synthetischen, thermoplastischen Endlosfilamenten, ein spinngedrehtes Stapelfasergarn 2 aus Naturfasern pflanzlichen und/oder tierischen Ursprungs und ein gummielastischer Polyurethan-Faden 3 werden zusammen durch eine Luftwirbeldüse 10 bekannter Art geführt und in dieser stellenweise miteinander verflochten. Die Luftwirbeldüse 10 besitzt in üblicher Weise einen axialen Durchlasskanal, durch welchen die Filamentgarne 1 und 1', das Stapelfasergarn 2 und der Polyurethan-Faden 3 miteinander hindurchgeführt werden. In den axialen Durchlasskanal münden seitlich Luftblaskanäle. Das so gebildete Mischgarn 4 wird in einer Aufwickeleinrichtung 11 aufgewickelt.1 schematically shows a method for producing a blended yarn. Two false twisted textured filament yarns 1 and 1 'made of synthetic, thermoplastic continuous filaments, a spun-turned staple fiber yarn 2 made of natural fibers of plant and / or animal origin and a rubber-elastic polyurethane thread 3 are passed together through an air vortex nozzle 10 of known type and intertwined in places in this. The air swirl nozzle 10 has in the usual way an axial passage channel through which the fila ment yarns 1 and 1 ', the staple fiber yarn 2 and the polyurethane thread 3 are passed together. Air-blowing ducts open laterally into the axial passage duct. The mixed yarn 4 thus formed is wound up in a winding device 11.

Das Stapelfasergarn 2 wird von einem Lieferwerk 12 mit einer definierten Geschwindigkeit und einer gewünschten Spannung in die Luftwirbeldüse 10 geliefert. Das Lieferwerk 12 zieht das Garn 2.über eine Fadenbremse 13 von einer Spule 14 ab.The staple fiber yarn 2 is supplied by a delivery unit 12 into the air swirl nozzle 10 with a defined speed and a desired tension. The feed mechanism 12 draws the yarn 2 from a bobbin 14 via a thread brake 13.

Die Filamentgarne 1 und 1' werden von einem Lieferwerk 15 in die Luftwirbeldüse 10 geliefert. Das Lieferwerk 15 zieht die Garne 1 und 1' über je eine Fadenbremse 16 bzw. 16', vorzugsweise jeweils eine einstellbare Hysteresebremse, von zwei Spulen 17 und 17' ab. Zwischen dem Lieferwerk 15 und den Fadenbremsen 16 bzw. 16' werden die falschzwirn-texturierten Filamentgarne 1 und 1' gedehnt, vorzugsweise um etwa 3 bis 10% oder mit einer Zugkraft von etwa 0,7 bis 2,6 cN/dtex, und erfahren dadurch eine Kräuselungs-Reaktivierung. Das Lieferwerk 15 gibt die Filamentgarne 1 und 1' mit einer vorgewählten Überlieferung an die Luftwirbeldüse 10 ab, beispielsweise mit einer Überlieferung von etwa 5 bis 10%, bezogen auf die Geschwindigkeit des Stapelfasergarns 2. Die Filamentgarne 1 und 1' werden dadurch zwischen dem Lieferwerk 15 und der Luftwirbeldüse 10 entspannt, so dass sie voll auskräuseln können. Dadurch werden die Filamentgarne in einen Zustand verbracht, in welchem sie sich in der Luftwirbeldüse 10 optimal mit dem Stapelfasergarn 2 stellenweise verflechten lassen, so dass die erzeugten Verflechtungsstellen ausreichend verarbeitungs-schiebefest sind. Im so erzeugten Mischgarn haben die in der beschriebenen Weise ausgekräuselten Filamentgarne 1 und 1' dann die Tendenz, sich zusammenzuziehen und das Stapelfasergarn 2 zwischen den Verflechtungsstellen seitlich auszubiegen, so dass die Naturfaserstruktur im Mischgarn deutlich hervortritt.The filament yarns 1 and 1 'are supplied to the air swirl nozzle 10 by a supply unit 15. The delivery unit 15 draws the yarns 1 and 1 'from two spools 17 and 17' via a thread brake 16 or 16 ', preferably an adjustable hysteresis brake. The false twist-textured filament yarns 1 and 1 'are stretched between the feed mechanism 15 and the thread brakes 16 and 16', preferably by about 3 to 10% or with a tensile force of about 0.7 to 2.6 cN / dtex, and experienced thereby a ripple reactivation. The delivery unit 15 delivers the filament yarns 1 and 1 'with a preselected delivery to the air vortex nozzle 10, for example with an delivery of about 5 to 10%, based on the speed of the staple fiber yarn 2. The filament yarns 1 and 1' are thereby between the delivery unit 15 and the air vortex nozzle 10 relaxed so that they can fully ripple. As a result, the filament yarns are brought into a state in which they can be optimally interlaced in places in the air vortex nozzle 10 with the staple fiber yarn 2, so that the interlacing points produced are sufficiently resistant to processing and sliding. In the mixed yarn produced in this way, the filament yarns 1 and 1 'crimped in the manner described then have the tendency to contract and to bend the staple fiber yarn 2 laterally between the interlacing points, so that the natural fiber structure in the mixed yarn clearly emerges.

Bei Einsatz eines Polyurethan-Fadens 3 wird dieser von einer Abwickeleinrichtung 18 mit einer Geschwindigkeit geliefert, die kleiner ist als die Geschwindigkeit des Stapelfasergarns 2. Der Polyurethan-Faden 3 wird also in gedehntem Zustand mit dem Stapelfasergarn 2 zusammengeführt. Der Polyurethan-Faden 3 und die Abwickeleinrichtung 18 können jedoch auch weggelassen werden.When a polyurethane thread 3 is used, it is supplied by an unwinding device 18 at a speed which is lower than the speed of the staple fiber yarn 2. The polyurethane thread 3 is therefore brought together with the staple fiber thread 2 in the stretched state. However, the polyurethane thread 3 and the unwinding device 18 can also be omitted.

Nachstehend folgen drei Beispiele für geeignete Verfahrensbedingungen.Below are three examples of suitable process conditions.

Beispiel 1example 1

Als Stapelfasergarn 2 wird ein Baumwollgarn Nm 60/1 verwendet, das vom Lieferwerk 12 mit einer Geschwindigkeit von 500 m/Min. in die Luftwirbeldüse 10 geliefert wird. Die Aufwickeleinrichtung 11 bewirkt im Garn 2 eine Zugkraft von 10 cN.A cotton yarn N m 60/1 is used as the staple fiber yarn 2, which is supplied by the delivery unit 12 at a speed of 500 m / min. is supplied into the air swirl nozzle 10. The winding device 11 causes a tensile force of 10 cN in the yarn 2.

Als Filamentgarne 1 und 1' werden zwei hochelastische falschzwirn-texturierte Polyestergarne dtex 78 f 34 HE(Z) verwendet, die zwischen den Fadenbremsen 16 bzw. 16' und dem Lieferwerk 15 mit einer Zugkraft von je 55 cN gedehnt werden. Das Lieferwerk 15 fördert die Filamentgarne mit einer Geschwindigkeit von 540 m/Min. zur Luftwirbeldüse 10.As filament yarns 1 and 1 ', two highly elastic false twist textured polyester yarns dtex 78 f 34 HE (Z) are used, which are stretched between the thread brakes 16 and 16' and the feed unit 15 with a tensile force of 55 cN each. The delivery unit 15 conveys the filament yarns at a speed of 540 m / min. to the air swirl nozzle 10.

Der Polyurethanfaden 3 ist ein «Elastan»-Faden dtex 45, der von der Abwickeleinrichtung 18 mit einer Geschwindigkeit von 150 m/Min. abgegeben wird.The polyurethane thread 3 is a “elastane” thread dtex 45, which is taken from the unwinder 18 at a speed of 150 m / min. is delivered.

Beispiel 2Example 2

Als Stapelfasergarn 2 wird ein Baumwollgarn Nm 30/1 verwendet, das vom Lieferwerk 12 mit einer Geschwindigkeit von 400 m/Min. in die Luftwirbeldüse 10 geliefert wird. Die Fadenzugkraft beträgt 12 cN.A cotton yarn N m 30/1 is used as the staple fiber yarn 2, which is supplied by the delivery unit 12 at a speed of 400 m / min. is supplied into the air swirl nozzle 10. The thread tension is 12 cN.

Als Filamentgarne 1 und 1' werden zwei hochelastische falschzwirn-texturierte Polyestergarne dtex 167 f 34 HE(Z) verwendet, die zwischen den Fadenbremsen 16 bzw. 16' und dem Lieferwerk 15 mit einer Zugkraft von je 160 cN gedehnt werden und vom Lieferwerk 15 mit einer Geschwindigkeit von 428 m/Min. an die Luftwirbeldüse 10 abgegeben werden.As filament yarns 1 and 1 ', two highly elastic false twist-textured polyester yarns dtex 167 f 34 HE (Z) are used, which are stretched between the thread brakes 16 and 16' and the feed mechanism 15 with a tensile force of 160 cN each and by the feed mechanism 15 a speed of 428 m / min. are delivered to the air swirl nozzle 10.

Der Polyurethanfaden wird in diesem Beispiel weggelassen.The polyurethane thread is omitted in this example.

Beispiel 3Example 3

Es werden nur das Stapelfasergarn 2 und das Filamentgarn 1 verwendet, das zweite Filamentgarn 1' und der Polyurethanfaden 3 also weggelassen.Only the staple fiber yarn 2 and the filament yarn 1 are used, the second filament yarn 1 'and the polyurethane thread 3 are therefore omitted.

Das Stapelfasergarn 2 ist ein Baumwollgarn Nm 60/1, das mit einer Geschwindigkeit von 300 m/Min. durch die Luftwirbeldüse 10 gezogen wird. Die Fadenzugkraft beträgt 8 cN.The staple fiber yarn 2 is a cotton yarn N m 60/1, which at a speed of 300 m / min. is drawn through the air swirl nozzle 10. The thread tension is 8 cN.

Das Filamentgarn 1 ist ein hochelastisches falschzwirn-texturiertes Polyestergarn dtex 78 f 34 HE(Z), das zwischen der Fadenbremse 16 und dem Lieferwerk 15 mit einer Zugkraft von 65 cN gedehnt wird und vom Lieferwerk mit einer Geschwindigkeit von 318 m/Min. an die Luftwirbeldüse 10 abgegeben wird.The filament yarn 1 is a highly elastic false twist textured polyester yarn dtex 78 f 34 HE (Z), which is stretched between the thread brake 16 and the feed mechanism 15 with a tensile force of 65 cN and from the feed mechanism at a speed of 318 m / min. is delivered to the air swirl nozzle 10.

In Fig. 2 ist schematisch eine bevorzugte Anordnung der anhand der Fig. 1 beschriebenen Vorrichtungsteile dargestellt. Die in Fig. 2 gezeigte Vorrichtung besitzt zwei Spulengatter 20 und 20', in welchen die Spulen 14 bzw. 17 und 17' untergebracht sind. Unmittelbar vor dem Spulengatter 20 ist eine Spulmaschine 21 angeordnet, zu welcher die Fadenbremsen 13 und 16, die Lieferwerke 12 und 15, die Luftwirbeldüse 10 und die Aufwickeleinrichtung 11 gehören. Ferner kann an der Spulmaschine 21 auch die Abwickeleinrichtung 18 für den Polyurethan-Faden 3 angeordnet sein. Die Anordnung der Spulmaschine 21 unmittelbar vor dem Gatter 20 hat den Vorteil, dass den beiden eine gemeinsame Absaugeinrichtung zugeordnet werden kann, die sowohl bei der Aufwickeleinrichtung 11 der Spulmaschine als auch bei der Stapelfasergarnspule 14 im Gatter 20 je eine Absaugdüse für den Faserflug aufweist. Die Vorrichtung kann natürlich eine Vielzahl von Arbeitsstellen der beschriebenen Art aufweisen.FIG. 2 schematically shows a preferred arrangement of the device parts described with reference to FIG. 1. The device shown in Fig. 2 has two creels 20 and 20 ', in which the coils 14 and 17 and 17' are housed. A winding machine 21 is arranged directly in front of the creel 20, to which the thread brakes 13 and 16, the delivery mechanisms 12 and 15, the air swirl nozzle 10 and the winding device 11 belong. Furthermore, the unwinding device 18 for the polyurethane thread 3 can also be arranged on the winding machine 21. The arrangement of the winding machine 21 directly in front of the creel 20 has the advantage that the two can be assigned a common suction device, which has a suction nozzle for the fiber fly both in the winding device 11 of the winding machine and in the staple fiber yarn bobbin 14 in the creel 20. The device can of course have a large number of work stations of the type described.

In den Fig. 3 und 4 ist ein Mischgarn dargestellt, wie es in der beschriebenen Weise aus einem falschzwirn-texturierten Filamentgarn 1 und einem Stapelfasergarn 2 mittels einer Luftwirbeldüse hergestellt werden kann. Das Filamentgarn 1 und das Stapelfasergarn 2 sind an voneinander beabstandeten Stellen V verarbeitungs-schiebefest miteinander verflochten, während sie zwischen den Verflechtungsstellen V gebündelt nebeneinander verlaufen. Der Abstand zwischen zwei benachbarten .Verflechungsstellen V im gestreckten Zustand des Mischgarns, das heisst unter einer Belastung von 0,3 cN/dtex, wie in Fig. 3 dargestellt, ist mit Ix bezeichnet. Der mittlere Abstand lx beträgt 5 bis 50 mm, je nach der Art der verwendeten Luftwirbeldüse, dem Druck der zugeführten Blasluft, der Spannung des durch die Luftwirbeldüse hindurchlaufenden Stapelfasergarns und der Grösse der Überlieferung, mit der das falschzwirn-texturierte Filamentgarn der Luftwirbeldüse zugeführt wird. Je nach Wahl dieser Parameter sind die Verflechtungsstellen V in etwa gleichmässigen oder in unregelmässigen Abständen lx über die Länge des Mischgarns verteilt.3 and 4, a mixed yarn is shown as it can be produced in the manner described from a false twist-textured filament yarn 1 and a staple fiber yarn 2 by means of an air swirl nozzle. The filament yarn 1 and the staple fiber yarn 2 are interlaced at spaced-apart locations V in a manner that prevents them from sliding during processing, while they are between the interlacing put V bundled next to each other. The distance between two adjacent interweaving points V in the stretched state of the blended yarn, that is under a load of 0.3 cN / dtex, as shown in FIG. 3, is denoted by I x . The average distance l x is 5 to 50 mm, depending on the type of air vortex nozzle used, the pressure of the blown air supplied, the tension of the staple fiber yarn passing through the air vortex nozzle and the size of the delivery with which the false-twisted textured filament yarn is fed to the air vortex nozzle . Depending on the choice of these parameters, the interlacing points V are distributed approximately uniformly or at irregular intervals l x over the length of the blended yarn.

In Fig. 4 ist das Mischgarn von Fig. 3 in ungestrecktem Zustand dargestellt, das heisst unter einer Belastung von 0,0005 cN/dtex. Das Filamentgarn 1 hat sich zusammengezogen. Das Stapelfasergarn 2, das sich praktisch nicht zusammenziehen kann, ist dadurch an den ungebundenen Stellen zwischen den Verflechtungsstellen V seitlich ausgebogen. Der Abstand zwischen der Achse des Filamentgarns 1 und der Achse des ausgebogenen Stapelfasergarns 2 an der am weitesten von der Achse des Filamentgarns 1 entfernten Stelle ist mit ly bezeichnet. Die Abstände ly betragen im Mittel wenigstens 10% des mittleren Abstandes Ix gemäss Fig. 3.In Fig. 4 the blended yarn of Fig. 3 is shown in the unstretched state, that is under a load of 0.0005 cN / dtex. The filament yarn 1 has contracted. The staple fiber yarn 2, which practically cannot contract, is thereby laterally bent out at the unbound points between the interweaving points V. The distance between the axis of the filament yarn 1 and the axis of the bent staple fiber yarn 2 at the point farthest from the axis of the filament yarn 1 is denoted by ly. The distances ly are on average at least 10% of the mean distance I x according to FIG. 3.

In Fig. 5 ist in einem leicht gespannten Zustand ein Mischgarn dargestellt, das zusätzlich zum Filamentgarn 1 und zum Stapelfasergarn 2 noch einen gedehnten Hilfsfaden 3 aus Elastomerfasern, z.B. einen Polyurethan-Faden, enthält. An den Verflechtungsstellen V zwischen dem Filamentgarn 1 und dem Stapelfasergarn 2 ist der Hilfsfaden 3 ebenfalls mit den beiden Garnen 1 und 2 verflochten und in denselben festgehalten. Durch die elastische Kraft des Hilfsfadens 3 sind die Abstände der Verflechtungsstellen V verkleinert. Auch das Stapelfasergarn 2 ist daher zwischen den Verflechtungsstellen V seitlich ausgebogen, wodurch die Voluminosität des Mischgarns beträchtlich erhöht ist.5 shows a mixed yarn in a slightly tensioned state, which in addition to the filament yarn 1 and the staple fiber yarn 2 also has an extended auxiliary thread 3 made of elastomer fibers, e.g. contains a polyurethane thread. At the interweaving points V between the filament yarn 1 and the staple fiber yarn 2, the auxiliary thread 3 is also intertwined with the two yarns 1 and 2 and held in the same. The spacing of the interweaving points V is reduced by the elastic force of the auxiliary thread 3. The staple fiber yarn 2 is therefore laterally bent out between the interlacing points V, as a result of which the bulk of the mixed yarn is considerably increased.

Claims (7)

1. Method of making a blended yarn of at least one falsetwisttextured filament yarn (1) of synthetic thermoplastic material and at least one spun staple fiber yarn of natural fibers (2), which yarns are together fed to an air entangling nozzle (10) and are therein intermingled with one another at intervals, the filament yarn (1), which is withdrawn from a bobbin, being fed to the air entangling nozzle at a predetermined overfeed relative to the speed of withdrawal of the blended yarn from the air entangling nozzle, characterized in that the falsetwist textured filament yarn (1), after its withdrawal from the bobbin, is first stretched to effect a crimp reactivation before it is fed to the air entangling nozzle (10) at the said overfeed which causes development of maximum crimp in the yarn as it slackens.
2. Method according to claim 1, characterized in that the filament yarn (1) is stretched by 3 to 10% to effect crimp reactivation.
3. Method according to claim 1, characterized in that the filament yarn (1) is stretched with a tension force of 0.7 to 2.6 cN/dtex to effect crimp reactivation.
4. Method according to any one of claims 1 to 3, characterized in that the filament yarn (1) brought together with the staple fiber yarn is made to develop maximum crimp as it slackens by feeding it at an overfeed of 5 to 10%.
5. Method according to any one of claims 1 to 4, characterized in that a stretched auxiliary thread (3) of elastomer fibers, e.g. a polyurethane thread, is additionally fed to the air entangling nozzle (10) receiving the filament yarn (1) and the staple fiber yarn (2), said auxiliary thread also being intermingled with these yarns at the points (V) where the yarns are intermingled with one another.
6. Apparatus for carrying out the method according to any one of claims 1 to 5, characterized by two creels (20, 20') for receiving bobbins (14, 17, 17') of at least one falsetwist textured filament yarn and of at least one staple fiber yarn, and a winding frame (21) disposed immediately in front of the creels (20, 20') and including a winding device (11) for the blended yarn, an air entangling nozzle (10) upstream of the winding device, a first feed roll assembly (15) for feeding the filament yarn to the air entangling nozzle (10) and a first tensioning device (16) for the filament yarn running from one of said creels (20') to the first feed roll assembly (15), and a second feed roll assembly (12) for feeding the staple fiber yarn to the air entangling nozzle (10) and a second tensioning device (13) for the staple fiber yarn running from the other one of said creels (20) to the second feed roll assembly (12).
7. Blended yarn made by the method of claim 5, comprising at least one. falsetwist textured filament yarn (1) of synthetic thermoplastic material and at least one spun staple fiber yarn (2) of natural fibers, said yarns being intermingled with one another at spaced locking points resisting strip back in processing, and in addition at least one auxiliary thread of elastomer fibers (3), e.g. a polyurethane thread, which is also intermingled with the filament yarn and the staple fiber yarn at said locking points.
EP85105199A 1984-05-15 1985-04-29 Method for making a blended yarn Expired EP0161572B1 (en)

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CH2387/84 1984-05-15
CH238784 1984-05-15

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CH672929A5 (en) * 1987-07-07 1990-01-15 Heberlein & Co Ag Composite yarn mfg. installation - forms unit that can be mounted on winding machine
FR2751003B1 (en) * 1996-07-12 1998-09-25 Gsl Holding COMPOSITE YARN FOR THE MANUFACTURE OF ELASTIC KNITTED ARTICLES, AND KNITTED HOLDING ARTICLE USING SUCH A YARN
PL1759676T3 (en) 2005-09-06 2014-04-30 Sigvaris Man Ag Knitted bandage
ITBO20120240A1 (en) * 2012-05-03 2013-11-04 Gorgaini Graziano PROCEDURE FOR THE PRODUCTION OF INTERLACED YARNS
ITBO20120615A1 (en) * 2012-11-08 2014-05-09 Gorgaini Graziano INTERLACED COMPOSITE YARN
EP2844789A1 (en) * 2012-05-03 2015-03-11 Nytex S.r.l. Interlaced composite yarn
WO2016058987A1 (en) * 2014-10-13 2016-04-21 Ssm Giudici S.R.L. Machine and method for the production of fancy yarns
ITUB20152307A1 (en) * 2015-07-20 2017-01-20 Ssm Giudici S R L METHOD AND DEVICE FOR THE PRODUCTION OF A BLOODY AND THREADED THREAD THEN OBTAINED
US11608573B2 (en) * 2019-06-17 2023-03-21 Antonio Herminio Marin Production process of circular and sustainable mixed yarns and mixed yarns obtained
BR102019012508A2 (en) * 2019-06-17 2020-12-29 Antonio Herminio Marin production process of ecological, sustainable mixed yarns and mixed yarns obtained
BR102021011444A2 (en) 2021-06-11 2022-12-27 Antonio Herminio Marin PRODUCTION PROCESS OF DURABLE BIODEGRADABLE MIXED YARN AND MIXED YARN OBTAINED THROUGH THE SAID PROCESS
DE102022133282B3 (en) 2022-12-14 2024-02-08 Technische Universität Dresden, Körperschaft des öffentlichen Rechts Twist-free hybrid yarn comprising high-performance fibers and thermoplastic fibers, method and device for producing the same

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CH491219A (en) * 1968-05-22 1970-05-31 Heberlein & Co Ag Process for the production of an at least approximately stretch-free, high-bulk textile yarn
US4212152A (en) * 1978-04-14 1980-07-15 Burlington Industries, Inc. Yarn blending with air attachment on coning machine
US4196674A (en) * 1978-09-28 1980-04-08 Jacques Van Laarhoven Multi-level adjustable drafting table construction

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ES543143A0 (en) 1986-01-01
DE3561334D1 (en) 1988-02-11

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