EP0532458B1 - Air jet and process for diminishing or deleting the twist momentum of a textured yarn - Google Patents

Air jet and process for diminishing or deleting the twist momentum of a textured yarn Download PDF

Info

Publication number
EP0532458B1
EP0532458B1 EP92810623A EP92810623A EP0532458B1 EP 0532458 B1 EP0532458 B1 EP 0532458B1 EP 92810623 A EP92810623 A EP 92810623A EP 92810623 A EP92810623 A EP 92810623A EP 0532458 B1 EP0532458 B1 EP 0532458B1
Authority
EP
European Patent Office
Prior art keywords
yarn
blast nozzle
twist
air supply
duct
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.)
Expired - Lifetime
Application number
EP92810623A
Other languages
German (de)
French (fr)
Other versions
EP0532458A1 (en
Inventor
Ali Dr. Demir
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.)
Heberlein AG
Heberlein and Co AG
Original Assignee
Heberlein and Co AG
Heberlein Maschinenfabrik AG
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Heberlein and Co AG, Heberlein Maschinenfabrik AG filed Critical Heberlein and Co AG
Publication of EP0532458A1 publication Critical patent/EP0532458A1/en
Application granted granted Critical
Publication of EP0532458B1 publication Critical patent/EP0532458B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Images

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
    • D02G1/16—Producing crimped or curled fibres, filaments, yarns, or threads, giving them latent characteristics using jets or streams of turbulent gases, e.g. air, steam
    • 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
    • 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
    • D02G1/0206—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 by false-twisting
    • D02G1/0266—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 by false-twisting false-twisting machines

Definitions

  • the invention relates to a blowing nozzle for reducing or eliminating the torsional moment of a yarn treated with a false twist texturing device, with a treatment zone for the passage of the yarn, and an air supply opening tangentially into the treatment zone. Furthermore, the invention relates to a method for eliminating the torsional moment of a false twist textured yarn, the yarn being passed through a first heating device and a subsequent swirl generator as well as a second heating device and a subsequent swirl device.
  • a multifilament yarn to be textured is fed to a twister which is preceded by a heating zone.
  • a heating zone By heating and then cooling the twisted yarn, the molecules in the filaments of the yarn are fixed in a deformed state. After the twist, the twist of the yarn dissolves, the filaments crimp, and this gives the yarn bulk and high elasticity. At the same time, a torsional moment is created in the yarn.
  • the yarn is then passed through a second heating zone downstream of the twister to reduce the high elasticity.
  • the bulk of the yarn and the size of the torsional moment in the yarn also decrease somewhat.
  • the torsional moment in the textured yarn can interfere with the processing of the yarn into a woven or knitted fabric.
  • a relatively low tensile force is exerted on the yarn, for example when it is fed to a Raschel machine, the yarn can contract and form loops, the legs of which twist together.
  • Such loops can get caught in machine parts and lead to thread breaks.
  • the loops if they are not pulled up again in further processing, form defects in a finished knitted fabric.
  • the torsional moment leads to warping of knitted fabrics made with the textured yarn even without the formation of loops.
  • the US-PS No. 37 85 135 suggests to control the torque created in the yarn by the false twist texturing or to render it harmless.
  • a swirl chamber with a controlled pressure of an air jet is formed.
  • the yarn is passed through the swirl chamber without tensile force, loop loops being produced on the yarn in the swirl chamber.
  • By creating the direction of rotation of the rotating loops in the opposite direction to the false twist texturing an attempt is made to eliminate the disturbing torque.
  • a broader practical use of the solution according to US Pat. No. 37 85 135 has not become known.
  • pulling the yarn through the swirl chamber without tensile force is required and, on the other hand, large loops are forced against the loop formation tendency by the false twist texturing on the continuous yarn.
  • the object of the invention is therefore to create a device with which the torsional moment in the textured yarn leaving a twist generator of the texturing device can be reduced or eliminated.
  • the blowing nozzle according to the invention is characterized in that the treatment zone is designed as a continuous thread channel, and the blowing nozzle has a continuous threading slot in such a way that the threading slot and the air supply open tangentially in the same way in the yarn channel, the air entering the yarn channel being a swirl and the False twist of the yarn can be given an opposite twist. Because the air supply and the threading slot open into the thread channel in the same direction, the air rotating in the thread channel causes entrainment of a thread placed in the threading slot, so that during the operating state, the thread from the thread channel can no longer step back into the threading slot.
  • the blowing nozzle is designed symmetrically with respect to a central plane perpendicular to the axis of the yarn channel, so that a "Z" twist or an “S” twist can be generated, depending on the thread feed direction.
  • the blowing nozzle according to the invention are the subject of claims 3 to 9.
  • the textured yarn is passed between the twister of the texturing device and the blowing nozzle through a second heating zone.
  • the blowing nozzle, the air supply hole (s) of which compressed air is supplied acts as a second swirl sensor, which gives the yarn running through the second heating zone of the texturing device an incorrect twist. If this twist is opposite to the twist that the yarn receives in the first twister, then the torsional moment in the textured yarn is reduced or practically eliminated in the second heating zone without the bulk of the yarn decreasing significantly.
  • the method according to the invention is characterized in that the yarn is guided through a blowing nozzle connected downstream of the second heating device and designed with a tangential threading slot, the blowing nozzle having a continuous yarn channel into which the air supply also opens tangentially and forms a vortex in the yarn channel, such as this that the vortex generates a wrong twist on the yarn passing through the second heating device, in a direction which is opposite to the twist generated in the twister.
  • a multifilament yarn 10 to be textured is transferred to a twister 12, e.g. Friction swirlers supplied.
  • the textured yarn leaving the swirl device 12 is bulky and highly elastic.
  • the rotation imparted to the yarn by the twister 12 has resolved again after the twister.
  • known false twist texturing devices there is a torsional moment in the yarn which tries to twist the yarn again.
  • the yarn is then expediently guided in a known manner through a second heating device 13, which is connected downstream of the twist generator 12 and which reduces the elasticity of the yarn.
  • the second heating device 13 is followed by a blowing nozzle 14 which is described below and which again gives the yarn running through the heating device 13 an incorrect twist, in a direction opposite to the direction of the twist generated in the twister 12.
  • the blowing nozzle 14 is supplied with compressed air from a compressed air line 15.
  • the blowing nozzle 14 is shown on a larger scale in FIGS. 2 and 3. It contains a continuous yarn channel 16 for the passage of the textured yarn.
  • the yarn channel 16 has a central, cylindrical section with a length L (FIG. 5) of approximately 8 to 15 mm, preferably approximately 10 mm, and a diameter D (FIG. 4) of approximately 1 to 3 mm, preferably approximately 1, 5 mm.
  • Two conical end sections adjoin the middle section with a cone angle ⁇ (FIG. 5) of, for example, approximately 30 °.
  • At least one air supply hole opens laterally into the yarn channel 16.
  • the axes of the bores 17, 18 and 19 thus lie in a common plane parallel to the axis A.
  • the bore 18 lies approximately in the middle of the length L, and the bores 17 and 19 lie at a distance a of, for example, approximately 1.5 mm in front of and behind the bore 18.
  • the bores 17, 18 and 19 each have a diameter d (Fig. 5) and a length 1 (Fig. 4), where d is 0.1.D to 0.6.D and 1 is approximately 1.5.d to 3.d.
  • the air supply bores are connected to the compressed air line 15 (FIG. 1) via lines 20, 21 and 22 formed in the body of the blow nozzle 14 and a coupling 23.
  • the lines 20, 21 and 22 gradually merge into the bores 17, 18 and 19, respectively, via a constriction section. 4 has a convex ring-shaped inner wall; the inner wall of the constriction section could also be simply conical, or the constriction section could be omitted entirely.
  • a threading slot 24 also opens laterally into the yarn channel 16, preferably also approximately tangentially to the yarn channel and in such a direction that the air supplied through the air supply bores 17, 18, 19 and rotating in the yarn channel 16 takes along a yarn inserted through the threading slot and into it pulls the thread channel.
  • the walls of the threading slot opening into the yarn channel 16 24 form acute angles of approximately 45 ° with the axes of the air supply bores 17, 18 and 19.
  • the width of the threading slot 24 can be between 0.1 and 0.3 mm and is preferably approximately 0.2 mm.
  • the threading slot 24 widens outwards in that one of its walls merges with a curve into a surface 24.1 which is approximately perpendicular to the other wall.
  • three air supply bores 17.1, 18.1 and 19.1 open into the yarn channel 16.
  • the axes of the bores here lie at angular intervals of approximately 120 ° from one another in a common plane which perpendicularly intersects the axis of the yarn channel 16 approximately in the middle of the length L (FIG. 5).
  • the bores 17.1, 18.1 and 19.1 open, as described with reference to FIGS. 4, 5, approximately tangentially into the yarn channel 16, and their lengths and diameters are also as described with reference to FIGS. 4, 5.
  • the constriction sections in front of the air supply bores 17.1, 18.1, 19.1 are conical here as shown.
  • the axes of the air supply bores could also lie in a screw surface or spiral staircase surface, the axis of which is parallel to the yarn channel axis A, for example in accordance with a combination of the arrangements according to FIGS. 5 and 6.
  • the number of air supply holes is one to six, wherein the holes can all have the same diameter or different diameters.
  • FIG. 7 and 8 show a variant with only one air supply bore 18.2, which has the shape of a slot which is approximately rectangular in cross section.
  • the slot 18.2 has a length of 1.D to 2.D measured in the direction of the axis of the yarn channel 16 and a width f of 0.1.D to 0.6.D measured perpendicularly thereto. It opens out approximately tangentially into the middle of the length of the yarn channel 16.
  • the axes of the air supply bores cross the axis of the yarn channel 16 perpendicularly, and the entire blowing nozzle 14 is symmetrical with respect to a central plane perpendicular to the axis of the yarn channel, which is also represented by the line 3 - 3 in FIG. 2.
  • This symmetry has the advantage that the yarn can be passed through the blowing nozzle both from left to right according to FIG. 2 and from right to left, the yarn receiving a Z-twist in one case and an S-twist in the other case .
  • the same blowing nozzle can therefore be used for both directions of rotation.
  • the axes of the air supply holes can also cross the axis of the yarn channel at an oblique angle, e.g. at an angle of 70 to 80 °.
  • the compressed air entering the yarn channel 16 through the air supply hole (s) expands in the yarn channel and forms a vortex.
  • This vortex has two functions in the blow nozzles according to the invention. First, the air flow of the vortex covers the threading slot 24, which, as described, opens approximately tangentially into the thread channel 16, so that the thread cannot enter the threading slot 24 during operation. Secondly, the swirl gives rotation to the yarn passing through the second heating device 13 (FIG. 1), so that the filaments of the yarn in the heating device 13 assume an approximately untwisted position on average.
  • the internal torsional moment in the yarn is reduced or dissolved, the torsional moment in the yarn leaving the blow nozzle is greatly reduced or practically completely eliminated in comparison to a textured yarn produced without the blow nozzle.
  • the air pressure and air consumption required to operate the nozzles are modest. Depending on the temperature in the second heating device 13 and the titer of the yarn, an overpressure of about 0.4 to 1.5 bar is usually sufficient, and the air consumption is accordingly about 1 to 1.7 m 3 / h.
  • FIGS. 2 to 5 The effect of a blowing nozzle according to FIGS. 2 to 5 in a texturing device (FIG. 1) is illustrated by comparison tests.
  • Multifilament yarns PES 167f30 and PES 167f52 were textured at a speed of 500 m / min and temperatures of 200 ° C. in the first heating device 11 and of 190 ° C. in the second heating device 13.
  • the delivery into the second heating device was 4%, and that Tension in the yarn after the heater was 7 cN.
  • the torsion in the textured yarn without and with the use of the blowing nozzle 14, at a pressure of the supplied air of 1 bar, was determined as follows: the two ends of a 1 m long piece of yarn were held, and then one end was moved to the other, whereby the two legs of the loop formed are twisted together. The twists of twists were then counted after conditioning for 24 hours under standard conditions. The results were as follows: PES 167f30 yarn without blow nozzle: 37 twist turns per meter, with blow nozzle: 1 twist turn per meter. This corresponds to a reduction of 97%. PES 167f52 yarn without blow nozzle: 50 twist turns per meter, with blow nozzle: 5 twist turns per meter. This corresponds to a reduction of 90%.

Landscapes

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

Description

Die Erfindung betrifft eine Blasdüse zum Verringern oder Beseitigen des Torsionsmomentes eines mit einer Falschdrall-Texturiervorrichtung behandelten Garnes, mit einer Behandlungszone für den Durchlauf des Garnes, sowie einer tangential in die Behandlungszone einmündenden Luftzufuhr. Ferner betrifft die Erfindung ein Verfahren zum Beseitigen des Torsionsmomentes eines falschdralltexturierten Garnes, wobei das Garn durch eine erste Heizeinrichtung und einen anschliessenden Drallgeber sowie eine zweite Heizeinrichtung und einen nachfolgenden Entdraller geführt wird.The invention relates to a blowing nozzle for reducing or eliminating the torsional moment of a yarn treated with a false twist texturing device, with a treatment zone for the passage of the yarn, and an air supply opening tangentially into the treatment zone. Furthermore, the invention relates to a method for eliminating the torsional moment of a false twist textured yarn, the yarn being passed through a first heating device and a subsequent swirl generator as well as a second heating device and a subsequent swirl device.

In bekannten Falschdrall-Texturiervorrichtungen wird ein zu texturierendes Multifilamentgarn einem Drallgeber zugeführt, welchem eine Heizzone vorgeschaltet ist. Durch das Erhitzen und anschliessende Abkühlen des hochgedrehten Garnes werden die Moleküle in den Filamenten des Garnes in einem verformten Zustand fixiert. Nach dem Drallgeber löst sich der Drall des Garnes auf, die Filamente kräuseln sich, und dadurch erhält das Garn Bauschigkeit und hohe Elastizität. Gleichzeitig entsteht im Garn ein Torsionsmoment.In known false twist texturing devices, a multifilament yarn to be textured is fed to a twister which is preceded by a heating zone. By heating and then cooling the twisted yarn, the molecules in the filaments of the yarn are fixed in a deformed state. After the twist, the twist of the yarn dissolves, the filaments crimp, and this gives the yarn bulk and high elasticity. At the same time, a torsional moment is created in the yarn.

Oft wird das Garn dann noch durch eine zweite, dem Drallgeber nachgeschaltete Heizzone geführt, um die hohe Elastizität zu verringern. Dabei nehmen gleichzeitig auch die Bauschigkeit des Garnes und die Grösse des Torsionsmomentes im Garn etwas ab.Often, the yarn is then passed through a second heating zone downstream of the twister to reduce the high elasticity. At the same time, the bulk of the yarn and the size of the torsional moment in the yarn also decrease somewhat.

Um das Torsionsmoment annähernd vollständig zum Verschwinden zu bringen, müsste man jedoch die Temperatur in der zweiten Heizzone so hoch wählen, dass das Garn auch seine Bauschigkeit weitgehend wieder verliert. In einem in der beschriebenen Weise falschdralltexturierten Garn herrscht daher stets ein Torsionsmoment.In order to make the torsional moment almost completely disappear, one would have to choose the temperature in the second heating zone so high that the yarn largely loses its bulk again. There is therefore always a torsional moment in a false twist textured in the manner described.

Das Torsionsmoment im texturierten Garn kann sich bei der Verarbeitung des Garns zu einem Gewebe oder Gewirke störend auswirken. Sobald auf das Garn nur eine relativ geringe Zugkraft ausgeübt wird, zum Beispiel bei der Zufuhr zu einer Raschelmaschine, kann sich das Garn zusammenziehen und Schlingen bilden, deren Schenkel sich miteinander verzwirnen. Solche Schlingen können in Maschinenteilen hängen bleiben und zu Fadenbrüchen führen. Ferner bilden die Schlingen, wenn sie nicht in der Weiterverarbeitung wieder aufgezogen werden, in einem fertigen Gewirke Fehler. Zudem führt das Torsionsmoment auch ohne die Schlingenbildung zu einem Verziehen von mit dem texturierten Garn hergestellten Gewirken.The torsional moment in the textured yarn can interfere with the processing of the yarn into a woven or knitted fabric. As soon as a relatively low tensile force is exerted on the yarn, for example when it is fed to a Raschel machine, the yarn can contract and form loops, the legs of which twist together. Such loops can get caught in machine parts and lead to thread breaks. Furthermore, the loops, if they are not pulled up again in further processing, form defects in a finished knitted fabric. In addition, the torsional moment leads to warping of knitted fabrics made with the textured yarn even without the formation of loops.

Die US-PS Nr. 37 85 135 schlägt vor, das im Garn durch das Falschdralltexturieren entstandene Drehmoment zu kontrollieren bzw. unschädlich zu machen. Es wird dazu eine Wirbelkammer mit kontrolliertem Druck eines Luftstrahles gebildet. Das Garn wird zugkraftfrei durch die Wirbelkammer geleitet, wobei in der Wirbelkammer an dem Garn kreisende Schlingen erzeugt werden. Dadurch dass die Drehrichtung der kreisenden Schlingen im Gegendrehsinn zu der Falschdralltexturierung erzeugt werden, wird versucht das störende Drehmoment zu beseitigen. Ein breiterer praktischer Einsatz der Lösung gemäss US-PS Nr. 37 85 135 ist nicht bekannt geworden. Einerseits wird eine zugkraftfreie Garndurchführung durch die Wirbelkammer gefordert und anderseits an dem durchlaufenden Garn grosse Schlingen entgegen der Schlingenbildungstendenz durch die Falschdralltexturierung aufgezwungen. Diese gegensätzlichen Wirkungen sind schwierig zu beherrschen.The US-PS No. 37 85 135 suggests to control the torque created in the yarn by the false twist texturing or to render it harmless. For this purpose, a swirl chamber with a controlled pressure of an air jet is formed. The yarn is passed through the swirl chamber without tensile force, loop loops being produced on the yarn in the swirl chamber. By creating the direction of rotation of the rotating loops in the opposite direction to the false twist texturing, an attempt is made to eliminate the disturbing torque. A broader practical use of the solution according to US Pat. No. 37 85 135 has not become known. On the one hand, pulling the yarn through the swirl chamber without tensile force is required and, on the other hand, large loops are forced against the loop formation tendency by the false twist texturing on the continuous yarn. These opposing effects are difficult to master.

Die Erfindung hat sich daher die Aufgabe gestellt, eine Einrichtung zu schaffen, mit der das Torsionsmoment im texturierten Garn, das einen Drallgeber der Texturiervorrichtung verlässt, verringert oder beseitigt werden kann.The object of the invention is therefore to create a device with which the torsional moment in the textured yarn leaving a twist generator of the texturing device can be reduced or eliminated.

Die erfindungsgemässe Blasdüse ist dadurch gekennzeichnet, dass die Behandlungszone als durchgehender Garnkanal ausgebildet ist, und die Blasdüse einen durchgehenden Einfädelschlitz aufweist, derart, dass der Einfädelschlitz und die Luftzufuhr gleichsinnig tangential in den Garnkanal münden, wobei der in den Garnkanal eintretenden Luft ein Wirbel und dem Falschdrall des Garnes ein entgegengesetzter Drall erteilbar ist. Dadurch, dass die Luftzufuhr und der Einfädelschlitz gleichsinnig in den Garnkanal münden, bewirkt die im Garnkanal drehende Luft eine Mitnahme eines in den Einfädelschlitz gegebenen Garns, so dass während dem Betriebszustand das Garn aus dem Garnkanal nicht mehr zurück in den Einfädelschlitz treten kann.The blowing nozzle according to the invention is characterized in that the treatment zone is designed as a continuous thread channel, and the blowing nozzle has a continuous threading slot in such a way that the threading slot and the air supply open tangentially in the same way in the yarn channel, the air entering the yarn channel being a swirl and the False twist of the yarn can be given an opposite twist. Because the air supply and the threading slot open into the thread channel in the same direction, the air rotating in the thread channel causes entrainment of a thread placed in the threading slot, so that during the operating state, the thread from the thread channel can no longer step back into the threading slot.

Gemäss einer besonders vorteilhaften Ausgestaltung wird die Blasdüse bezüglich einer zur Achse des Garnkanals senkrechten Mittelebene symmetrisch ausgebildet, so dass je nach Fadendurchführrichtung ein "Z"-Drall oder ein "S"-Drall erzeugbar ist. Weitere bevorzugte Weiterbildungen der erfindungsgemässen Blasdüse sind Gegenstand der Ansprüche 3 bis 9. Vorzugsweise wird das texturierte Garn zwischen dem Drallgeber der Texturiervorrichtung und der Blasdüse noch durch eine zweite Heizzone geführt. Die Blasdüse, deren Luftzufuhrbohrung(en) Druckluft zugeführt wird, wirkt als zweiter Drallgeber, der dem durch die zweite Heizzone der Texturiervorrichtung laufenden Garn einen falschen Drall erteilt. Wenn dieser Drall dem Drall entgegengesetzt ist, den das Garn im ersten Drallgeber erhält, dann wird in der zweiten Heizzone das Torsionsmoment im texturierten Garn verringert oder praktisch ganz beseitigt, ohne dass die Bauschigkeit des Garns wesentlich abnimmt.According to a particularly advantageous embodiment, the blowing nozzle is designed symmetrically with respect to a central plane perpendicular to the axis of the yarn channel, so that a "Z" twist or an "S" twist can be generated, depending on the thread feed direction. Further preferred developments of the blowing nozzle according to the invention are the subject of claims 3 to 9. Preferably, the textured yarn is passed between the twister of the texturing device and the blowing nozzle through a second heating zone. The blowing nozzle, the air supply hole (s) of which compressed air is supplied, acts as a second swirl sensor, which gives the yarn running through the second heating zone of the texturing device an incorrect twist. If this twist is opposite to the twist that the yarn receives in the first twister, then the torsional moment in the textured yarn is reduced or practically eliminated in the second heating zone without the bulk of the yarn decreasing significantly.

Das erfindungsgemässe Verfahren ist dadurch gekennzeichnet, dass das Garn durch eine der zweiten Heizeinrichtung nachgeschaltete und mit tangentialem Einfädelschlitz ausgebildete Blasdüse geführt wird, wobei die Blasdüse einen durchgehenden Garnkanal aufweist, in den auch die Luftzufuhr gleichsinnig tangential mündet und in dem Garnkanal einen Wirbel bildet, derart, dass der Wirbel an dem durch die zweite Heizeinrichtung laufenden Garn einen falschen Drall erzeugt, in einer Richtung, welche dem im Drallgeber erzeugten Drall entgegengesetzt ist.The method according to the invention is characterized in that the yarn is guided through a blowing nozzle connected downstream of the second heating device and designed with a tangential threading slot, the blowing nozzle having a continuous yarn channel into which the air supply also opens tangentially and forms a vortex in the yarn channel, such as this that the vortex generates a wrong twist on the yarn passing through the second heating device, in a direction which is opposite to the twist generated in the twister.

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

  • Fig. 1 eine schematische Darstellung einer Falschdrall-Texturiervorrichtung mit einer erfindungsgemässen Einrichtung,
  • Fig. 2 eine Ansicht der erfindungsgemässen Blasdüse in grösserem Massstab,
  • Fig. 3 einen Schnitt nach der Linie 3 - 3 in Fig. 2,
  • Fig. 4 einen Ausschnitt aus Fig. 3 in grösserem Massstab,
  • Fig. 5 im Massstab von Fig. 4 einen Schnitt nach der Linie 5 - 5 in Fig. 2,
  • Fig. 6 eine ähnliche Ansicht wie Fig. 4 für eine erste Variante,
  • Fig. 7 eine ähnliche Ansicht wie Fig. 4 für eine zweite Variante und
  • Fig. 8 einen der Fig. 5 entsprechenden Schnitt für die Variante gemäss Fig. 7.
Embodiments of the invention are explained below with reference to the drawings. In these show:
  • 1 is a schematic representation of a false twist texturing device with a device according to the invention,
  • 2 is a view of the blow nozzle according to the invention on a larger scale,
  • 3 shows a section along the line 3 - 3 in FIG. 2,
  • 4 shows a detail from FIG. 3 on a larger scale,
  • 5 on the scale of FIG. 4 shows a section along the line 5 - 5 in FIG. 2,
  • 6 is a view similar to FIG. 4 for a first variant,
  • Fig. 7 is a view similar to FIG. 4 for a second variant and
  • 8 shows a section corresponding to FIG. 5 for the variant according to FIG. 7.

In der in Fig. 1 schematisch gezeigten Falschdrall-Texturiervorrichtung wird ein zu texturierendes Multifilamentgarn 10 über eine erste Heizeinrichtung 11 einem Drallgeber 12, z.B. Friktions-Drallgeber, zugeführt. Das den Drallgeber 12 verlassende texturierte Garn ist bauschig und hochelastisch. Die dem Garn vom Drallgeber 12 erteilte Drehung hat sich nach dem Drallgeber wieder aufgelöst. In bekannten Falschdrall-Texturiervorrichtungen herrscht hier im Garn ein Torsionsmoment, welches das Garn wieder zu verdrehen sucht.In the false twist texturing device shown schematically in FIG. 1, a multifilament yarn 10 to be textured is transferred to a twister 12, e.g. Friction swirlers supplied. The textured yarn leaving the swirl device 12 is bulky and highly elastic. The rotation imparted to the yarn by the twister 12 has resolved again after the twister. In known false twist texturing devices there is a torsional moment in the yarn which tries to twist the yarn again.

Das Garn wird dann zweckmässig in bekannter Weise durch eine dem Drallgeber 12 nachgeschaltete zweite Heizeinrichtung 13 geführt, welche die Elastizität des Garns verringert.The yarn is then expediently guided in a known manner through a second heating device 13, which is connected downstream of the twist generator 12 and which reduces the elasticity of the yarn.

Erfindungsgemäss ist der zweiten Heizeinrichtupg 13 eine im Nachfolgenden beschriebene Blasdüse 14 nachgeschaltet, die dem durch die Heizeinrichtung 13 laufenden Garn wieder einen falschen Drall erteilt, und zwar in einer Richtung, die der Richtung des im Drallgeber 12 erzeugten Dralls entgegengesetzt ist. Dadurch wird in der zweiten Heizeinrichtung 13 das vorstehend erwähnte Torsionsmoment im Garn verringert oder praktisch ganz beseitigt. Die Blasdüse 14 wird aus einer Druckluftleitung 15 mit Druckluft versorgt.According to the invention, the second heating device 13 is followed by a blowing nozzle 14 which is described below and which again gives the yarn running through the heating device 13 an incorrect twist, in a direction opposite to the direction of the twist generated in the twister 12. As a result, the above-mentioned torsional moment in the yarn is reduced or practically completely eliminated in the second heating device 13. The blowing nozzle 14 is supplied with compressed air from a compressed air line 15.

Die Blasdüse 14 ist in den Fig. 2 und 3 in grösserem Massstab dargestellt. Sie enthält einen durchgehenden Garnkanal 16 für den Durchlauf des texturierten Garns. Der Garnkanal 16 hat einen mittleren, zylindrischen Abschnitt mit einer Länge L (Fig. 5) von etwa 8 bis 15 mm, vorzugsweise etwa 10 mm, und einen Durchmesser D (Fig. 4) von etwa 1 bis 3 mm, vorzugsweise etwa 1,5 mm. An den mittleren Abschnitt schliessen sich zwei konische Endabschnitte mit einem Konuswinkel α (Fig. 5) von beispielsweise etwa 30° an.The blowing nozzle 14 is shown on a larger scale in FIGS. 2 and 3. It contains a continuous yarn channel 16 for the passage of the textured yarn. The yarn channel 16 has a central, cylindrical section with a length L (FIG. 5) of approximately 8 to 15 mm, preferably approximately 10 mm, and a diameter D (FIG. 4) of approximately 1 to 3 mm, preferably approximately 1, 5 mm. Two conical end sections adjoin the middle section with a cone angle α (FIG. 5) of, for example, approximately 30 °.

In den Garnkanal 16 mündet seitlich wenigstens eine Luftzufuhrbohrung. In der Ausführungsform gemäss den Fig. 2 bis 5 sind es drei Luftzufuhrbohrungen 17, 18 und 19, die in einer zur Achse A des Garnkanals 16 parallelen Reihe hintereinander angeordnet sind. Die Achsen der Bohrungen 17, 18 und 19 liegen also in einer gemeinsamen, zur Achse A parallelen Ebene. Die Bohrung 18 liegt dabei etwa in der Mitte der Länge L, und die Bohrungen 17 und 19 liegen im Abstand a von beispielsweise etwa 1,5 mm vor bzw. hinter der Bohrung 18. Die Bohrungen 17, 18 und 19 haben je einen Durchmesser d (Fig. 5) und eine Länge 1 (Fig. 4), wobei d gleich 0,1.D bis 0,6.D ist und 1 etwa gleich 1,5.d bis 3.d ist. Die Bohrungen münden etwa tangential in den Garnkanal 16, das heisst, die Achsen der Bohrungen 17, 18 und 19 haben von der Achse A des Garnkanals je einen Abstand b (Fig. 5). Die Grösse des Abstandes b liegt vorzugsweise bei etwa b = 0,5.(D - d), so dass die von der Achse des Garnkanals 16 am weitesten entfernten Mantellinien der Bohrungen 17, 18 und 19 etwa tangential zur Umfangsfläche des Garnkanals 16 verlaufen. Die Luftzufuhrbohrungen sind über im Körper der Blasdüse 14 ausgebildete Leitungen 20, 21 und 22 und eine Kupplung 23 mit der Druckluftleitung 15 (Fig. 1) verbunden. Die Leitungen 20, 21 und 22 gehen jeweils über einen Verengungsabschnitt allmählich in die Bohrungen 17, 18 bzw. 19 über. Der Verengungsabschnitt hat gemäss Fig. 4 eine konvexe ringförmige Innenwand; die Innenwand des Verengungsabschnittes könnte aber auch einfach konisch sein, oder der Verengungsabschnitt könnte ganz weggelassen werden.At least one air supply hole opens laterally into the yarn channel 16. In the embodiment according to FIGS. 2 to 5 there are three air supply bores 17, 18 and 19 which are arranged one behind the other in a row parallel to the axis A of the yarn channel 16. The axes of the bores 17, 18 and 19 thus lie in a common plane parallel to the axis A. The bore 18 lies approximately in the middle of the length L, and the bores 17 and 19 lie at a distance a of, for example, approximately 1.5 mm in front of and behind the bore 18. The bores 17, 18 and 19 each have a diameter d (Fig. 5) and a length 1 (Fig. 4), where d is 0.1.D to 0.6.D and 1 is approximately 1.5.d to 3.d. The bores open approximately tangentially into the yarn channel 16, that is, the axes of the bores 17, 18 and 19 are each at a distance b from the axis A of the yarn channel (FIG. 5). The size of the distance b is preferably approximately b = 0.5. (D-d), so that the surface lines of the bores 17, 18 and 19 which are most distant from the axis of the yarn channel 16 run approximately tangentially to the peripheral surface of the yarn channel 16. The air supply bores are connected to the compressed air line 15 (FIG. 1) via lines 20, 21 and 22 formed in the body of the blow nozzle 14 and a coupling 23. The lines 20, 21 and 22 gradually merge into the bores 17, 18 and 19, respectively, via a constriction section. 4 has a convex ring-shaped inner wall; the inner wall of the constriction section could also be simply conical, or the constriction section could be omitted entirely.

Ein Einfädelschlitz 24 mündet ebenfalls seitlich in den Garnkanal 16, und zwar vorzugsweise ebenfalls etwa tangential zum Garnkanal und in solcher Richtung, dass die durch die Luftzufuhrbohrungen 17, 18, 19 zugeführte und im Garnkanal 16 drehende Luft ein durch den Einfädelschlitz eingelegtes Garn mitnimmt und in den Garnkanal zieht. Die in den Garnkanal 16 mündenden Wände des Einfädelschlitzes 24 bilden mit den Achsen der Luftzufuhrbohrungen 17, 18 und 19 spitze Winkel von etwa 45°. Die Weite des Einfädelschlitzes 24 kann zwischen 0,1 und 0,3 mm liegen und beträgt vorzugsweise etwa 0,2 mm. Nach aussen erweitert sich der Einfädelschlitz 24, indem eine seiner Wände über eine Rundung in eine zur anderen Wand etwa senkrechte Fläche 24.1 übergeht.A threading slot 24 also opens laterally into the yarn channel 16, preferably also approximately tangentially to the yarn channel and in such a direction that the air supplied through the air supply bores 17, 18, 19 and rotating in the yarn channel 16 takes along a yarn inserted through the threading slot and into it pulls the thread channel. The walls of the threading slot opening into the yarn channel 16 24 form acute angles of approximately 45 ° with the axes of the air supply bores 17, 18 and 19. The width of the threading slot 24 can be between 0.1 and 0.3 mm and is preferably approximately 0.2 mm. The threading slot 24 widens outwards in that one of its walls merges with a curve into a surface 24.1 which is approximately perpendicular to the other wall.

In der Variante gemäss Fig. 6 münden in den Garnkanal 16 wiederum drei Luftzufuhrbohrungen 17.1, 18.1 und 19.1. Die Achsen der Bohrungen liegen hier in Winkelabständen von etwa 120° voneinander in einer gemeinsamen Ebene, welche die Achse des Garnkanals 16 etwa in der Mitte der Länge L (Fig. 5) desselben senkrecht schneidet. Die Bohrungen 17.1, 18.1 und 19.1 münden wie anhand der Fig. 4, 5 beschrieben etwa tangential in den Garnkanal 16, und ihre Längen und Durchmesser sind ebenfalls wie anhand der Fig. 4, 5 beschrieben. Die Verengungsabschnitte vor den Luftzufuhrbohrungen 17.1, 18.1, 19.1 sind hier wie dargestellt konisch.In the variant according to FIG. 6, three air supply bores 17.1, 18.1 and 19.1 open into the yarn channel 16. The axes of the bores here lie at angular intervals of approximately 120 ° from one another in a common plane which perpendicularly intersects the axis of the yarn channel 16 approximately in the middle of the length L (FIG. 5). The bores 17.1, 18.1 and 19.1 open, as described with reference to FIGS. 4, 5, approximately tangentially into the yarn channel 16, and their lengths and diameters are also as described with reference to FIGS. 4, 5. The constriction sections in front of the air supply bores 17.1, 18.1, 19.1 are conical here as shown.

In einer weiteren, nicht dargestellten Variante könnten die Achsen der Luftzufuhrbohrungen - etwa einer Kombination der Anordnungen gemäss Fig. 5 und 6 entsprechend - auch in einer Schraubenfläche bzw. Wendeltreppenfläche liegen, deren Achse zur Garnkanalachse A parallel ist.In a further variant, not shown, the axes of the air supply bores could also lie in a screw surface or spiral staircase surface, the axis of which is parallel to the yarn channel axis A, for example in accordance with a combination of the arrangements according to FIGS. 5 and 6.

Allgemein beträgt die Zahl der Luftzufuhrbohrungen eins bis sechs, wobei die Bohrungen alle gleichen Durchmesser oder auch unterschiedliche Durchmesser haben können.In general, the number of air supply holes is one to six, wherein the holes can all have the same diameter or different diameters.

Die Fig. 7 und 8 zeigen eine Variante mit nur einer Luftzufuhrbohrung 18.2, welche die Form eines im Querschnitt etwa rechteckigen Schlitzes hat. Der Schlitz 18.2 hat eine in Richtung der Achse des Garnkanals 16 gemessene Länge von 1.D bis 2.D und eine senkrecht dazu gemessene Breite f von 0,1.D bis 0,6.D. Er mündet etwa in der Mitte der Länge des Garnkanals 16 etwa tangential in denselben.7 and 8 show a variant with only one air supply bore 18.2, which has the shape of a slot which is approximately rectangular in cross section. The slot 18.2 has a length of 1.D to 2.D measured in the direction of the axis of the yarn channel 16 and a width f of 0.1.D to 0.6.D measured perpendicularly thereto. It opens out approximately tangentially into the middle of the length of the yarn channel 16.

In den beschriebenen Ausführungsformen kreuzen die Achsen der Luftzufuhrbohrungen die Achse des Garnkanals 16 senkrecht, und die ganze Blasdüse 14 ist symmetrisch bezüglich einer zur Achse des Garnkanals senkrechten Mittelebene, die auch durch die Linie 3 - 3 in Fig. 2 dargestellt wird. Diese Symmetrie hat den Vorteil, dass das Garn sowohl von links nach rechts gemäss Fig. 2 als auch von rechts nach links durch die Blasdüse geführt werden kann, wobei das Garn im einen Fall einen Z-Drall und im anderen Fall einen S-Drall erhält. Die gleiche Blasdüse kann also für beide Drehrichtungen verwendet werden. In abgewandelten Ausführungsformen können die Achsen der Luftzufuhrbohrungen die Achse des Garnkanals aber auch schiefwinklig kreuzen, z.B. unter einem Winkel von 70 bis 80°.In the described embodiments, the axes of the air supply bores cross the axis of the yarn channel 16 perpendicularly, and the entire blowing nozzle 14 is symmetrical with respect to a central plane perpendicular to the axis of the yarn channel, which is also represented by the line 3 - 3 in FIG. 2. This symmetry has the advantage that the yarn can be passed through the blowing nozzle both from left to right according to FIG. 2 and from right to left, the yarn receiving a Z-twist in one case and an S-twist in the other case . The same blowing nozzle can therefore be used for both directions of rotation. In modified embodiments, the axes of the air supply holes can also cross the axis of the yarn channel at an oblique angle, e.g. at an angle of 70 to 80 °.

Die Wirkungsweise der beschriebenen Blasdüsen dürfte klar sein: Die durch die Luftzufuhrbohrung(en) in den Garnkanal 16 eintretende Druckluft expandiert im Garnkanal und bildet einen Wirbel. Dieser Wirbel hat in den erfindungsgemässen Blasdüsen zwei Funktionen. Erstens deckt die Luftströmung des Wirbels den Einfädelschlitz 24 ab, der wie beschrieben etwa tangential in den Garnkanal 16 mündet, so dass das Garn im Betrieb nicht in den Einfädelschlitz 24 eintreten kann. Zweitens erteilt der Wirbel dem Garn, das durch die zweite Heizeinrichtung 13 (Fig. 1) läuft, eine Drehung, so dass die Filamente des Garns in der Heizeinrichtung 13 eine im Mittel etwa unverdrehte Stellung einnehmen. Dadurch wird das innere Torsionsmoment im Garn reduziert oder aufgelöst, das Torsionsmoment in dem die Blasdüse verlassenden Garn ist, im Vergleich zu einem ohne die Blasdüse erzeugten texturierten Garn, stark verringert oder praktisch ganz beseitigt. Der für den Betrieb der Düsen erforderliche Luftdruck und der Luftverbrauch sind bescheiden. Je nach der Temperatur in der zweiten Heizeinrichtung 13 und dem Titer des Garns genügt in der Regel ein Ueberdruck von etwa 0,4 bis 1,5 bar, und der Luftverbrauch beträgt entsprechend etwa 1 bis 1,7 m3/h.The mode of operation of the blow nozzles described should be clear: the compressed air entering the yarn channel 16 through the air supply hole (s) expands in the yarn channel and forms a vortex. This vortex has two functions in the blow nozzles according to the invention. First, the air flow of the vortex covers the threading slot 24, which, as described, opens approximately tangentially into the thread channel 16, so that the thread cannot enter the threading slot 24 during operation. Secondly, the swirl gives rotation to the yarn passing through the second heating device 13 (FIG. 1), so that the filaments of the yarn in the heating device 13 assume an approximately untwisted position on average. As a result, the internal torsional moment in the yarn is reduced or dissolved, the torsional moment in the yarn leaving the blow nozzle is greatly reduced or practically completely eliminated in comparison to a textured yarn produced without the blow nozzle. The air pressure and air consumption required to operate the nozzles are modest. Depending on the temperature in the second heating device 13 and the titer of the yarn, an overpressure of about 0.4 to 1.5 bar is usually sufficient, and the air consumption is accordingly about 1 to 1.7 m 3 / h.

Die Wirkung einer Blasdüse gemäss den Fig. 2 bis 5 in einer Texturiervorrichtung (Fig. 1) wird durch Vergleichsversuche illustriert. Multifilamentgarne PES 167f30 und PES 167f52 wurden texturiert bei einer Geschwindigkeit von 500 m/min und Temperaturen von 200°C in der ersten Heizeinrichtung 11 und von 190°C in der zweiten Heizeinrichtung 13. Die Ueberlieferung in die zweite Heizeinrichtung betrug 4%, und die Spannung im Garn nach der Heizeinrichtung betrug 7 cN. Die Torsion im texturierten Garn ohne und mit Verwendung der Blasdüse 14, bei einem Druck der zugeführten Luft von 1 bar, wurde wie folgt ermittelt: Die beiden Enden eines 1 m langen Garnstücks wurden festgehalten, und dann wurde ein Ende zum anderen bewegt, wobei sich die beiden Schenkel der gebildeten Schlinge miteinander verzwirnten. Die Zwirndrehungen wurden dann nach 24 Stunden Konditionierung unter Standardbedingungen gezählt. Die Resultate waren die folgenden: PES 167f30-Garn ohne Blasdüse: 37 Zwirndrehungen pro Meter, mit Blasdüse: 1 Zwirndrehung pro Meter. Das entspricht einer Verringerung um 97%. PES 167f52-Garn ohne Blasdüse: 50 Zwirndrehungen pro Meter, mit Blasdüse: 5 Zwirndrehungep pro Meter. Das entspricht einer Verringerung um 90%.The effect of a blowing nozzle according to FIGS. 2 to 5 in a texturing device (FIG. 1) is illustrated by comparison tests. Multifilament yarns PES 167f30 and PES 167f52 were textured at a speed of 500 m / min and temperatures of 200 ° C. in the first heating device 11 and of 190 ° C. in the second heating device 13. The delivery into the second heating device was 4%, and that Tension in the yarn after the heater was 7 cN. The torsion in the textured yarn without and with the use of the blowing nozzle 14, at a pressure of the supplied air of 1 bar, was determined as follows: the two ends of a 1 m long piece of yarn were held, and then one end was moved to the other, whereby the two legs of the loop formed are twisted together. The twists of twists were then counted after conditioning for 24 hours under standard conditions. The results were as follows: PES 167f30 yarn without blow nozzle: 37 twist turns per meter, with blow nozzle: 1 twist turn per meter. This corresponds to a reduction of 97%. PES 167f52 yarn without blow nozzle: 50 twist turns per meter, with blow nozzle: 5 twist turns per meter. This corresponds to a reduction of 90%.

Claims (10)

  1. Blast nozzle for reducing or eliminating the torsional moment in a yarn treated with a false twist texturing device, with a treatment zone for the passage of the yarn, and an air supply means merging tangentially into the treatment zone, characterized in that the treatment zone is designed as a continuous yarn duct (16) and the blast nozzle (14) has a continuous threading slit (24) in such a way that the threading slit (24) and the air supply means merge tangentially into the yarn duct (16) in the same direction, a vortex being imparted to the air entering the yarn duct (16) and an opposing twist being imparted to the false twist of the yarn (10).
  2. Blast nozzle according to claim 1, characterized in that the blast nozzle (14) is symmetrical in design with respect to a centre plane perpendicular to the axis of the yarn duct and a "Z" twist or a "S" twist can be produced according to the yarn passage direction.
  3. Blast nozzle according to claim 1 or 2, characterized in that the cylindrical central portion of the yarn duct (16) has a length (L) of 8 to 15 mm.
  4. Blast nozzle according to one of claims 1 to 3, characterized in that the threading slit (24) has a width of 0.1 to 0.3 mm.
  5. Blast nozzle according to one of claims 1 to 4, characterized in that the air supply means in the blast nozzle (14) is designed as a bore or a slit.
  6. Blast nozzle according to one of claims 1 to 5, characterized in that several air supply bores (17, 18, 19; 17.1, 18.1, 19.1) are provided of which the axes lie in a common plane parallel to the axis (A) of the yarn duct (16) or in a plane perpendicular to the axis (A) of the yarn duct or in a helicoid.
  7. Blast nozzle according to claim 6, characterized in that the number of air supply bores (17, 18, 19; 17.1, 18.1, 19.1) is from 1 to 6.
  8. Blast nozzle according to one of claims 5 to 7, characterized in that the or each air supply bore (17, 18, 19; 17.1, 18.1, 19.1) is cylindrical and has a diameter (d) which is equal to 0.1 to 0.6 times the diameter (D) of the yarn duct (16).
  9. Blast nozzle according to one of claims 1 to 5, characterized in that the air supply bore (18.2) has the form of a slit of which the width (f) is equal to 0.1 to 0.6 times the diameter (D) of the yarn duct (16).
  10. Method of eliminating the torsional moment in a false-twist textured yarn, the yarn (10) being guided through a first heater (11) and a subsequent twister (12), and a second heater (13) and a subsequent untwister, characterized in that the yarn (10) is guided through a blast nozzle (14) which follows the second heater (13) and is designed with a tangential threading slit (24), the blast nozzle (14) having a continuous yarn duct (16) into which the air supply means also merges tangentially in the same direction and forms a vortex in the yarn duct (16) in such a way that the vortex produces a false twist on the yarn (10) running through the second heater (13) in a direction opposed to the twist produced in the twister (12).
EP92810623A 1991-09-12 1992-08-14 Air jet and process for diminishing or deleting the twist momentum of a textured yarn Expired - Lifetime EP0532458B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CH2717/91 1991-09-12
CH271791 1991-09-12

Publications (2)

Publication Number Publication Date
EP0532458A1 EP0532458A1 (en) 1993-03-17
EP0532458B1 true EP0532458B1 (en) 1996-09-25

Family

ID=4240016

Family Applications (1)

Application Number Title Priority Date Filing Date
EP92810623A Expired - Lifetime EP0532458B1 (en) 1991-09-12 1992-08-14 Air jet and process for diminishing or deleting the twist momentum of a textured yarn

Country Status (6)

Country Link
EP (1) EP0532458B1 (en)
JP (1) JP3093473B2 (en)
KR (1) KR100200403B1 (en)
CN (1) CN1043433C (en)
DE (1) DE59207236D1 (en)
RU (1) RU2041982C1 (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10003216C1 (en) * 2000-01-26 2001-09-06 Heberlein Fasertech Ag Air swirl nozzle
US7454816B2 (en) 1999-06-14 2008-11-25 E.I. Du Pont De Nemours And Company Stretch break method, apparatus and product
US7581376B2 (en) 2004-02-27 2009-09-01 E.I. Du Pont De Nemours And Company Spun yarn, and method and apparatus for the manufacture thereof

Families Citing this family (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0932712B1 (en) * 1997-08-20 2002-06-05 B a r m a g AG False twist texturing machine and method for producing a textured thread
US5950290A (en) * 1997-09-12 1999-09-14 International Machinery Sales, Inc. Jet for interlacing textile yarns
DE29902103U1 (en) * 1999-02-08 2000-06-15 Heberlein Fasertechnologie Ag, Wattwil Device for connecting an endless filament yarn and a staple fiber yarn
CN1804170B (en) * 2005-01-14 2011-04-06 香港理工大学 Method and apparatus for machining single ring spun yarn
TW200728533A (en) * 2005-10-27 2007-08-01 Temco Components Gmbh Device for twisting and swirling a multifilament yarn
CH699327B1 (en) 2007-02-14 2010-03-15 Oerlikon Heberlein Temco Wattw Apparatus for simultaneously treating several multifilament yarns.
DE102011015689A1 (en) * 2011-03-31 2012-10-04 Oerlikon Textile Gmbh & Co. Kg Device for generating turbulences on a multifilament yarn
CN102877173B (en) * 2012-04-29 2014-11-12 荆门瑞铂科技有限公司 BCF fiber rotary expanding device
CN103938330B (en) * 2014-03-27 2016-03-30 吴江明佳织造有限公司 Filament yarn network air beaming device
WO2016078209A1 (en) * 2014-11-19 2016-05-26 浙江四通化纤有限公司 Air flow knotting and twisting nozzle of carpet spinning interlacer and air flow knotting and twisting method
CN106917175B (en) * 2015-03-30 2019-03-15 绍兴勤烨针织工业园有限公司 Textile yarn is bulk device
CN111455505B (en) * 2020-04-15 2021-08-10 军事科学院系统工程研究院军需工程技术研究所 Short fiber/filament interlacing composite spinning device and method

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3785135A (en) * 1971-04-05 1974-01-15 Leesona Corp Producing torque controlled voluminous set yarns

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4639986A (en) * 1981-04-01 1987-02-03 Phillips Petroleum Company Filament jet entangler
US4430780A (en) * 1982-01-11 1984-02-14 International Machinery Sales, Inc. Fluid flow comingling jet
US4532760A (en) * 1984-02-21 1985-08-06 Milliken Research Corporation D. C. Yarn tension control

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3785135A (en) * 1971-04-05 1974-01-15 Leesona Corp Producing torque controlled voluminous set yarns

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7454816B2 (en) 1999-06-14 2008-11-25 E.I. Du Pont De Nemours And Company Stretch break method, apparatus and product
US7559121B2 (en) 1999-06-14 2009-07-14 E.I. Du Pont De Nemours And Company Stretch break method and product
DE10003216C1 (en) * 2000-01-26 2001-09-06 Heberlein Fasertech Ag Air swirl nozzle
US7581376B2 (en) 2004-02-27 2009-09-01 E.I. Du Pont De Nemours And Company Spun yarn, and method and apparatus for the manufacture thereof

Also Published As

Publication number Publication date
CN1043433C (en) 1999-05-19
JPH07189068A (en) 1995-07-25
CN1072970A (en) 1993-06-09
JP3093473B2 (en) 2000-10-03
KR100200403B1 (en) 1999-06-15
EP0532458A1 (en) 1993-03-17
RU2041982C1 (en) 1995-08-20
DE59207236D1 (en) 1996-10-31
KR930006203A (en) 1993-04-21

Similar Documents

Publication Publication Date Title
EP0532458B1 (en) Air jet and process for diminishing or deleting the twist momentum of a textured yarn
DE2660983C2 (en) Process for pneumatic twist spinning
DE1061953B (en) Voluminous loop yarn as well as process and device for its production
DE2632351A1 (en) METHOD AND DEVICE FOR MANUFACTURING AN INTERLINKED OR. Tangled multi-fiber or MULTI-THREAD YARN AND INTERLINKED OR Tangled multi-fiber or MULTI-THREAD YARN
DE2307816A1 (en) TEXTURED AIRJET BRAIDED YARN AND THE METHOD AND DEVICE FOR ITS MANUFACTURING
EP0625600B1 (en) Apparatus for the treatment of at least one running multifilament yarn
EP0373519B1 (en) Method for making a yarn textured by an air jet
EP0485328A1 (en) System for airjet texturing at least one multifilament yarn
EP0539808A1 (en) Apparatus for stuffer crimping synthetic filament yarns
DE19703924C2 (en) Process, nozzle and system for air treatment of filament yarn
DE2411074A1 (en) METHOD AND DEVICE FOR MANUFACTURING AN EFFECT YARN WITH ALTERNATING THICK AND THIN SITUATIONS
EP0443390B1 (en) Process for the production of an air-textured yarn
DE1685664A1 (en) Device for simultaneous twisting and interlacing
EP0406673A2 (en) False-twist crimping machine for a synthetic yarn
DE2163226C3 (en) Process for the production of a bulky yarn with a controllable residual twist
DE3919758C2 (en)
DE4424547C2 (en) Process for producing a sewing thread and sewing thread
WO2007048546A1 (en) Device for twisting and mingling multifilament yarns
DE1660341C2 (en) Device for treating a running thread with a flowing medium
DE1916144B2 (en) Device for treating a thread
EP1645668A1 (en) Yarn heater and its use
AT227125B (en) Method for producing a bulky yarn
DE3438743C2 (en) Process for producing a low-volume effect yarn
DE4004721C2 (en) Process for the production of an air textured thread
DE19963139C1 (en) False twisting of filament yarn has one or more air jets to give alternating left and right twists together with stops to prevent reassertion of the twist between the lengths of opposing twist directions

Legal Events

Date Code Title Description
PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

AK Designated contracting states

Kind code of ref document: A1

Designated state(s): CH DE FR GB IT LI

17P Request for examination filed

Effective date: 19930615

17Q First examination report despatched

Effective date: 19940527

GRAG Despatch of communication of intention to grant

Free format text: ORIGINAL CODE: EPIDOS AGRA

GRAG Despatch of communication of intention to grant

Free format text: ORIGINAL CODE: EPIDOS AGRA

GRAG Despatch of communication of intention to grant

Free format text: ORIGINAL CODE: EPIDOS AGRA

GRAH Despatch of communication of intention to grant a patent

Free format text: ORIGINAL CODE: EPIDOS IGRA

ITF It: translation for a ep patent filed
GRAH Despatch of communication of intention to grant a patent

Free format text: ORIGINAL CODE: EPIDOS IGRA

GRAA (expected) grant

Free format text: ORIGINAL CODE: 0009210

AK Designated contracting states

Kind code of ref document: B1

Designated state(s): CH DE FR GB IT LI

GBT Gb: translation of ep patent filed (gb section 77(6)(a)/1977)

Effective date: 19960925

REF Corresponds to:

Ref document number: 59207236

Country of ref document: DE

Date of ref document: 19961031

ET Fr: translation filed
REG Reference to a national code

Ref country code: CH

Ref legal event code: NV

Representative=s name: ERNST ACKERMANN PATENTANWALT

PLBE No opposition filed within time limit

Free format text: ORIGINAL CODE: 0009261

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

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

REG Reference to a national code

Ref country code: CH

Ref legal event code: PFA

Free format text: HEBERLEIN MASCHINENFABRIK AG TRANSFER- HEBERLEIN FASERTECHNOLOGIE AG

26N No opposition filed
REG Reference to a national code

Ref country code: FR

Ref legal event code: CD

REG Reference to a national code

Ref country code: GB

Ref legal event code: IF02

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

Ref country code: GB

Payment date: 20040809

Year of fee payment: 13

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

Ref country code: DE

Payment date: 20040814

Year of fee payment: 13

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

Ref country code: FR

Payment date: 20040816

Year of fee payment: 13

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

Ref country code: CH

Payment date: 20040821

Year of fee payment: 13

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

Ref country code: IT

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES;WARNING: LAPSES OF ITALIAN PATENTS WITH EFFECTIVE DATE BEFORE 2007 MAY HAVE OCCURRED AT ANY TIME BEFORE 2007. THE CORRECT EFFECTIVE DATE MAY BE DIFFERENT FROM THE ONE RECORDED.

Effective date: 20050814

Ref country code: GB

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

Effective date: 20050814

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

Ref country code: LI

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

Effective date: 20050831

Ref country code: CH

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

Effective date: 20050831

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

Ref country code: DE

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

Effective date: 20060301

REG Reference to a national code

Ref country code: CH

Ref legal event code: PL

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

Effective date: 20050814

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

Ref country code: FR

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

Effective date: 20060428

REG Reference to a national code

Ref country code: FR

Ref legal event code: ST

Effective date: 20060428