FR2724947A1 - False torsion air appts. used for mfg. synthetic fibres - Google Patents

False torsion air appts. used for mfg. synthetic fibres Download PDF

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Publication number
FR2724947A1
FR2724947A1 FR9411807A FR9411807A FR2724947A1 FR 2724947 A1 FR2724947 A1 FR 2724947A1 FR 9411807 A FR9411807 A FR 9411807A FR 9411807 A FR9411807 A FR 9411807A FR 2724947 A1 FR2724947 A1 FR 2724947A1
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France
Prior art keywords
false
cavity
channel
air
liquid
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FR9411807A
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French (fr)
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Individual
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Individual
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Priority to FR9411807A priority Critical patent/FR2724947A1/en
Publication of FR2724947A1 publication Critical patent/FR2724947A1/en
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Classifications

    • D—TEXTILES; PAPER
    • D04—BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
    • D04H—MAKING TEXTILE FABRICS, e.g. FROM FIBRES OR FILAMENTARY MATERIAL; FABRICS MADE BY SUCH PROCESSES OR APPARATUS, e.g. FELTS, NON-WOVEN FABRICS; COTTON-WOOL; WADDING ; NON-WOVEN FABRICS FROM STAPLE FIBRES, FILAMENTS OR YARNS, BONDED WITH AT LEAST ONE WEB-LIKE MATERIAL DURING THEIR CONSOLIDATION
    • D04H1/00—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres
    • D04H1/40—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties
    • D04H1/42—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties characterised by the use of certain kinds of fibres insofar as this use has no preponderant influence on the consolidation of the fleece
    • D04H1/4326—Condensation or reaction polymers
    • D04H1/435—Polyesters
    • 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
    • D02G1/026—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 in the presence of a crimp finish
    • D—TEXTILES; PAPER
    • D04—BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
    • D04H—MAKING TEXTILE FABRICS, e.g. FROM FIBRES OR FILAMENTARY MATERIAL; FABRICS MADE BY SUCH PROCESSES OR APPARATUS, e.g. FELTS, NON-WOVEN FABRICS; COTTON-WOOL; WADDING ; NON-WOVEN FABRICS FROM STAPLE FIBRES, FILAMENTS OR YARNS, BONDED WITH AT LEAST ONE WEB-LIKE MATERIAL DURING THEIR CONSOLIDATION
    • D04H1/00—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres
    • D04H1/04—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres having existing or potential cohesive properties, e.g. natural fibres, prestretched or fibrillated artificial fibres

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  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Mechanical Engineering (AREA)
  • Yarns And Mechanical Finishing Of Yarns Or Ropes (AREA)

Abstract

An appts. for use in textile mfr. consists of a body (1) with a transverse cylindrical channel (2) surrounded by a cavity (3) which is linked to the channel through a series of small tangential channels (4). The cavity is connected to a compressed air duct (5) fed with a liq. lubricant mist to produce a rotary column of lubricated air inside the channel (2). The cavity has an outlet duct (7) for excess air and lubricant, leading to a lubricant extn. filter (8) which returns the liq. to the lubricator (6) through an automatic condensate purger.

Description

La présente invention a pour objet un organe de fausse torsion b air, à rendement amélioré.The present invention relates to a false air b torsion member, with improved efficiency.

Les organes de fausse torsion à air sont connus depuis longtemps, par exemple, par les brevets des Etats-Unis d'Amérique nO 4945718 et 4807431 où le fil passant au travers d'un orifice cylindrique reçoit une fausse torsion par des jets d'air comprimé arrivant è la périphérie de cet orifice par des petits canaux tangentiels.Air false twist members have been known for a long time, for example, from United States patents Nos. 4945718 and 4807431 where the wire passing through a cylindrical orifice receives a false twist by air jets compressed arriving at the periphery of this orifice through small tangential channels.

Généralement ces organes de fausse torsion comprennent une entrée ayant un diamètre plus petit que celui de l'orifice cylindrique pour avoir une aspiration facilitant la mise en route du fil.Generally these false twist members include an inlet having a smaller diameter than that of the cylindrical orifice to have a suction facilitating the start of the wire.

Le niveau de torsion dépend de la pression de l'air, de son débit, des diamètres de l'orifice cylindrique et de l'entrée ainsi que du coefficient de frottement existant entre le fil et le matériau de l'orifice cylindrique.The level of torsion depends on the air pressure, its flow, the diameters of the cylindrical orifice and the inlet as well as the coefficient of friction existing between the wire and the material of the cylindrical orifice.

Généralement de l'air comprimé est amené dans une cavité s'étendant autour de l'orifice cylindrique et communiquant avec ce
dernier par l'intermédiaire de petits canaux débouchant tangen-
tiellement à la périphérie de l'orifice cylindrique.Generally compressed air is brought into a cavity extending around the cylindrical orifice and communicating with it.
the latter via small tangent channels
tial to the periphery of the cylindrical orifice.

Pour des usages particuliers, il a déjà été envisagé d'avoir
deux cavités, comme décrit dans le brevet français nO 2282492 où on envoie de l'air comprimé dans la première cavité afin de donner de la fausse torsion et un liquide dans la seconde afin d'humidifier le fil. Dans le cas où l'eau et le liquide sont injectés dans la même cavité, le liquide perturbe l'action de l'air comprimé.For particular uses, it has already been envisaged to have
two cavities, as described in French patent No. 2282492 where compressed air is sent into the first cavity to give false twist and a liquid in the second to moisten the wire. In the case where water and liquid are injected into the same cavity, the liquid disturbs the action of the compressed air.

Ces organes de fausse torsionà air sont employés dans de nombreux domaines textiles. Un cas particulier se trouve dans la production de fils fasciés dans lesquels la résistance du fil est assurée par un manteau de fibres peu nombreuses qui s'enroulent autour d'un corps de fibres parallèles.These false air twist members are used in many textile fields. A special case is found in the production of fasciated yarns in which the resistance of the yarn is ensured by a coat of few fibers which are wound around a body of parallel fibers.

Un procédé particulier de production de fils fasciés est décrit notamment dans le brevet français.n0 1336639 où, après des moyens d'étirage d'un ruban de fibres, la bandelette de fibres est souirise à l'action d'une buse aspirante puis d'un organe de fausse torsion à air comprimé. A particular process for producing fasciated yarns is described in particular in French patent no. 1336639 where, after means for drawing a ribbon of fibers, the strip of fibers is subjected to the action of a suction nozzle and then d '' a compressed air false torsion member.

Plus le niveau de fausse torsion est élevé, plus le nombre de fibres fasciées augmente, améliorant ainsi la résistance à la rupture du fil.The higher the level of false twist, the more the number of fasciated fibers increases, thus improving the breaking strength of the wire.

a présente invention vise à créer un organe de fausse torsion du type décrit plus haut avec un rendement de fausse torsion amélioré par modification du coefficient de frottement entre le fil et le matériau de l'orifice cylindrique, par injection d'un nélange air et liquide dans les petits canaux tangentiels sans avoir de perturbations dues à l'élément liquide. he present invention aims to create a false torsion member of the type described above with an improved false torsion efficiency by modifying the coefficient of friction between the wire and the material of the cylindrical orifice, by injecting an air and liquid mixture in small tangential channels without having disturbances due to the liquid element.

Suivant la présente invention, il est utilisé à cette fin, un organe de fausse torsion du type décrit plus haut, dans la cavité duquel on injecte de l'air comprimé à qui un lubrificateur adjoint un brouillard de liquide dosé. La dite cavité possède en outre une sortie où l'excédent de liquide et d'air est envoyé au travers d'un filtre deshuileur qui sépare la partie liquide qui peut être renvoyée au lubrificateur précédent et la partie air sec qui peut être utilisée à d'autres fins.According to the present invention, it is used for this purpose, a false torsion member of the type described above, into the cavity of which compressed air is injected to which an assistant lubricator a mist of metered liquid. Said cavity also has an outlet where the excess liquid and air is sent through an oil separator filter which separates the liquid part which can be returned to the previous lubricator and the dry air part which can be used for 'other purposes.

L'invention et les avantages qu'elle apporte seront cependant mieux compris grâce à l'exemple de mise en oeuvre donné ci-après 3 titre illustratif mais non limitatif et qui est illustré par les figures annexées dans lesquelles
La figure 1 est une coupe longitudinale d'un exemple de réalisation d'un organe de fausse torsion suivant l'invention.The invention and the advantages which it brings will however be better understood thanks to the example of implementation given below 3 by way of illustration but not limitation and which is illustrated by the appended figures in which
Figure 1 is a longitudinal section of an exemplary embodiment of a false torsion member according to the invention.

va figure 2 est une coupe suivant AA de la figure 1.Figure 2 is a section along AA in Figure 1.

Selon l'invention, l'organe de fausse torsion est constitué par un corps 1, traversé par un canal sensiblement cylindrique 2 et dans lequel se trouve une cavité 3 située autour du canal de manière à communiquer avec ce dernier par l'intermédiaire de anaux tangentiels 4. En outre, il est prévu un passage 5 s'étendant à travers le corps 1 et débouchant dans la cavité 3.According to the invention, the false torsion member is constituted by a body 1, crossed by a substantially cylindrical channel 2 and in which there is a cavity 3 situated around the channel so as to communicate with the latter by means of anal tangentials 4. In addition, a passage 5 is provided which extends through the body 1 and opens into the cavity 3.

Ce passage est relié à un lubrificateur 6, lui-même alimenté en air comprimé sec. This passage is connected to a lubricator 6, itself supplied with dry compressed air.

De plus, il est prévu au fond de la cavité 3, un passage 7, chargé d'évacuer le surplus de liquide vers un filtre deshuilèor. In addition, there is provided at the bottom of the cavity 3, a passage 7, responsible for discharging the excess liquid to a deoiler filter.

U qui sépare la partie liquide qui est renvoyée par un purgeur automatique de condensat 9 au lubrificateur 6 et la partie air sec qui peut être utilisée à d'autres fins. U which separates the liquid part which is returned by an automatic condensate trap 9 to the lubricator 6 and the dry air part which can be used for other purposes.

Jar exemple, elle peut judicieusement alimenter une buse aspirante (non représentée) dans le cas de réalisation de fils fasciés.Jar example, it can judiciously feed a suction nozzle (not shown) in the case of making fasciated wires.

La quantité de liquide à apporter dépend de la pression et du débit de l'air comprimé, des dimensions de l'orifice 2, des canaux tangentiels, de la vitesse de filage, de la résistance à l'abra sion des fibres utilisées ...The quantity of liquid to be supplied depends on the pressure and the flow rate of the compressed air, the dimensions of the orifice 2, the tangential channels, the spinning speed, the abrasion resistance of the fibers used. .

Par exemple, on a obtenu de bons résultats en réalisant un fil fascié de 10 tex composé de 100m de fibres de polyester haute ténacité de 1,3 dtex de finesse et de 90 mm de hauteur moyenne à la vitesse de 300 m/mn avec un organe de torsion ayant un diamè- re d'entrée de 1,8 mm et un diamètre d'orifice de 2,5 mm et une ouse d'aspiration ayant un diamètre de 5 mm.For example, good results have been obtained by making a 10 tex fasciated yarn composed of 100 m of high tenacity polyester fibers of 1.3 dtex fineness and 90 mm of average height at a speed of 300 m / min with a torsion member having an inlet diameter of 1.8 mm and an orifice diameter of 2.5 mm and a suction port having a diameter of 5 mm.

Dans le cas où l'on ne travaille qu'en air sec, le fil a une résistance moyenne de 160 grammes, soit une ténacité de 16 g/tex.In the case where one only works in dry air, the wire has an average resistance of 160 grams, or a tenacity of 16 g / tex.

Jr, on a trouvé qu'en adjoignant à l'air comprimé à 6 bars un élange d'eau et de 0,25 d'adoucissant cationique à hauteur de
I goutte par seconde, la résistance du fil atteint 250 grammes, soit une ténacité de 25 grammes par tex. La pression après le filtre 8 est alors de 5 bars.Jr, it has been found that by adding compressed air at 6 bars a mixture of water and 0.25 cationic softener up to
I drop per second, the resistance of the wire reaches 250 grams, or a tenacity of 25 grams per tex. The pressure after the filter 8 is then 5 bars.

Dans le cas où l'on n'évacue pas le surplus de liquide qui s'non elle petit à petit dans la cavité, on constate au bout d'un
ertain temps remièrement, un écoulement de liquide par les canaux tangentiels à à la sortie de l'orifice 2 impliquant des dispositifs complexes de récupération.In the event that the excess liquid which does not gradually flow out into the cavity is not evacuated, after a
ertain weather firstly, a flow of liquid through the tangential channels at the outlet of the orifice 2 involving complex recovery devices.

Jeuxièmement, après un temps plus long, l'apparition de casses de r, ils.  Secondly, after a longer time, the appearance of breakages in them.

Dans le cas où l'on ne met pas assez de liquide, on constate une baisse de résistance du fil due à un frottement trop intense de celui-ci sur l'orifice 2.In the case where one does not put enough liquid, there is a drop in resistance of the wire due to too intense friction of the latter on the orifice 2.

Or, on a trouvé que le fait d'ajouter du liquide permet de lubrifier l'orifice 2 au travers des canaux tangentiels 4 pour changer le coefficient de frottement entre le fil et le matériau du corps 1 tandis que la récupération par le passage 7 dans la cavité 3 permet de travailler en surplus de liquide sans avoir les problèmes de casses et de récupération extérieure de liquide. However, it has been found that adding liquid makes it possible to lubricate the orifice 2 through the tangential channels 4 to change the coefficient of friction between the wire and the material of the body 1 while the recovery by the passage 7 in the cavity 3 makes it possible to work in excess of liquid without having the problems of breakage and external recovery of liquid.

Claims (3)

REVENDICATIONS 10) Organe de fausse torsion constitué par un corps traversé par un canal sensiblement cylindrique et muni d'une cavité située autour du canal et qui communique avec celui-ci par l'interm6- diaire de petits canaux tangentiels tandis qu'il est prévu dans le corps un passage dans la cavité et par lequel peut être amené de l'air comprimé à qui un lubrificateur adjoint un brouillard de liquide dosé pour produire dans le canal une colonne d'air lubrifiée, tournante.10) False torsion member constituted by a body crossed by a substantially cylindrical channel and provided with a cavity situated around the channel and which communicates with the latter by means of small tangential channels while it is provided in the body a passage in the cavity and through which can be brought compressed air to which a lubricator adds a mist of liquid metered to produce in the channel a column of lubricated air, rotating. 2 ) Organe de fausse torsion suivant la revendication 1 caractérisé en ce que la cavité s'étendant autour du canal possède une évacuation de l'excédent de liquide et d'air vers un filtre déshuileur. 2) false torsion member according to claim 1 characterized in that the cavity extending around the channel has a discharge of excess liquid and air to a deoiler filter. 3 ) Organe de fausse torsion suivant les revendications 1 et 2 caractérisé en ce que la partie liquide est renvoyée au -lubrificateur par un purgeur automatique de condensat. 3) False torsion member according to claims 1 and 2 characterized in that the liquid part is returned to the -lubrificateur by an automatic condensate trap. 40) Procédé de fabrication de fils fasciés à résistance améliorée, caractérisé en ce que la fausse torsion est donnée par un organe de fausse torsion selon l'une des revendications 1 à 3.40) A method of manufacturing fasciated yarns with improved resistance, characterized in that the false twist is given by a false twist member according to one of claims 1 to 3. 50) Procédé de fabrication de fils fasciés, caractérisé en ce que la fausse torsion est donnée par un organe de fausse torsion selon l'une des revendications 1 à 3 et l'air alimentant la buse d'aspiration est récupéré après le filtre déshuileur selon la revendication 2. 50) A method of manufacturing fasciated wires, characterized in that the false twist is given by a false twist member according to one of claims 1 to 3 and the air supplying the suction nozzle is recovered after the oil separator filter according to claim 2.
FR9411807A 1994-09-28 1994-09-28 False torsion air appts. used for mfg. synthetic fibres Pending FR2724947A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
FR9411807A FR2724947A1 (en) 1994-09-28 1994-09-28 False torsion air appts. used for mfg. synthetic fibres

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR9411807A FR2724947A1 (en) 1994-09-28 1994-09-28 False torsion air appts. used for mfg. synthetic fibres

Publications (1)

Publication Number Publication Date
FR2724947A1 true FR2724947A1 (en) 1996-03-29

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FR9411807A Pending FR2724947A1 (en) 1994-09-28 1994-09-28 False torsion air appts. used for mfg. synthetic fibres

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FR (1) FR2724947A1 (en)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103014938A (en) * 2011-09-21 2013-04-03 村田机械株式会社 Spinning machine and spun yarn producing method
EP2450478A3 (en) * 2010-11-05 2014-03-12 Murata Machinery, Ltd. Spinning machine
CH707561A1 (en) * 2013-02-13 2014-08-15 Rieter Ag Maschf Spinning station of air jet spinning machine for spinning fiber strand into yarn, has pressurized air supply circuit with pressurized air supply line that supply the additive with dosage pumped by metering pump
EP2949795A3 (en) * 2014-05-27 2016-03-23 Murata Machinery, Ltd. Spinning method, spinning machine, and yarn
EP3103903A1 (en) * 2015-06-11 2016-12-14 Murata Machinery, Ltd. Spinning machine and spinning method

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3279164A (en) * 1959-05-04 1966-10-18 Du Pont Fluid jet process for twisting yarn
DE3402460A1 (en) * 1984-01-25 1985-08-01 W. Schlafhorst & Co, 4050 Mönchengladbach SWIRLERS
US5330338A (en) * 1992-02-17 1994-07-19 Toyo Boseki Kabushiki Kaisha Apparatus for spinning of polyurethane elastic filaments

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3279164A (en) * 1959-05-04 1966-10-18 Du Pont Fluid jet process for twisting yarn
DE3402460A1 (en) * 1984-01-25 1985-08-01 W. Schlafhorst & Co, 4050 Mönchengladbach SWIRLERS
US5330338A (en) * 1992-02-17 1994-07-19 Toyo Boseki Kabushiki Kaisha Apparatus for spinning of polyurethane elastic filaments

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2450478A3 (en) * 2010-11-05 2014-03-12 Murata Machinery, Ltd. Spinning machine
CN103014938A (en) * 2011-09-21 2013-04-03 村田机械株式会社 Spinning machine and spun yarn producing method
EP2573256A3 (en) * 2011-09-21 2014-03-12 Murata Machinery, Ltd. Spinning machine and spun yarn producing method
CH707561A1 (en) * 2013-02-13 2014-08-15 Rieter Ag Maschf Spinning station of air jet spinning machine for spinning fiber strand into yarn, has pressurized air supply circuit with pressurized air supply line that supply the additive with dosage pumped by metering pump
EP2949795A3 (en) * 2014-05-27 2016-03-23 Murata Machinery, Ltd. Spinning method, spinning machine, and yarn
EP3103903A1 (en) * 2015-06-11 2016-12-14 Murata Machinery, Ltd. Spinning machine and spinning method
CN106245163A (en) * 2015-06-11 2016-12-21 村田机械株式会社 Weaving loom and Weaving method

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