EP0934436A1 - Method, device and installation for the continuous displacement processing of threads - Google Patents

Method, device and installation for the continuous displacement processing of threads

Info

Publication number
EP0934436A1
EP0934436A1 EP97944944A EP97944944A EP0934436A1 EP 0934436 A1 EP0934436 A1 EP 0934436A1 EP 97944944 A EP97944944 A EP 97944944A EP 97944944 A EP97944944 A EP 97944944A EP 0934436 A1 EP0934436 A1 EP 0934436A1
Authority
EP
European Patent Office
Prior art keywords
wire
air
nozzle
treatment bath
central channel
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
EP97944944A
Other languages
German (de)
French (fr)
Other versions
EP0934436B1 (en
Inventor
Jean-Michel Alavoine
Michel Vanhelle
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.)
Verhaeghe Industrie
Verhaeghe Ind
Original Assignee
Verhaeghe Industrie
Verhaeghe Ind
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 Verhaeghe Industrie, Verhaeghe Ind filed Critical Verhaeghe Industrie
Publication of EP0934436A1 publication Critical patent/EP0934436A1/en
Application granted granted Critical
Publication of EP0934436B1 publication Critical patent/EP0934436B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F26—DRYING
    • F26B—DRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM
    • F26B13/00—Machines and apparatus for drying fabrics, fibres, yarns, or other materials in long lengths, with progressive movement
    • F26B13/001—Drying and oxidising yarns, ribbons or the like
    • F26B13/002—Drying coated, e.g. enamelled, varnished, wires
    • D—TEXTILES; PAPER
    • D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06B—TREATING TEXTILE MATERIALS USING LIQUIDS, GASES OR VAPOURS
    • D06B1/00—Applying liquids, gases or vapours onto textile materials to effect treatment, e.g. washing, dyeing, bleaching, sizing or impregnating
    • D06B1/02—Applying liquids, gases or vapours onto textile materials to effect treatment, e.g. washing, dyeing, bleaching, sizing or impregnating by spraying or projecting
    • D—TEXTILES; PAPER
    • D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06B—TREATING TEXTILE MATERIALS USING LIQUIDS, GASES OR VAPOURS
    • D06B15/00—Removing liquids, gases or vapours from textile materials in association with treatment of the materials by liquids, gases or vapours
    • D06B15/09—Removing liquids, gases or vapours from textile materials in association with treatment of the materials by liquids, gases or vapours by jets of gases
    • D—TEXTILES; PAPER
    • D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06B—TREATING TEXTILE MATERIALS USING LIQUIDS, GASES OR VAPOURS
    • D06B21/00—Successive treatments of textile materials by liquids, gases or vapours

Definitions

  • the present invention relates to the field of continuous treatment of textile yarns, whether they are yarns made up of a plurality of continuous filaments or staple fibers of natural, synthetic or artificial origin.
  • this action of wiping the wire with air is far from sufficient to avoid splashes of treatment bath, in particular dyes, at the outlet of the device used, before drying.
  • threading the wire into the various impregnation and wringing members is not easy and requires the use of passettes, which are fine rods of wire. .
  • Document FR.2.282.492 also discloses a continuous treatment method intended mainly for treating a fibrous ribbon using a false twist member in order to untwist this ribbon after it has received a injection of a liquid, which can be a colored liquid.
  • a liquid which can be a colored liquid.
  • the fibrous ribbon is surrounded by a liquid sheath which, in the preferred application, makes it possible to bond the fibers of the ribbon by adhesion.
  • the object of the present invention is to make it possible to carry out the treatment of all kinds of threads, consisting of continuous fibers or filaments, avoiding uncontrolled splashes of treatment bath and ensuring easy threading of the thread when the process is started.
  • the method of treating wires in continuous movement which, typically, comprises the following successive operations, taken in the direction of movement of the wire: a) a suction operation in which the wire is sucked in through an air suction nozzle, b) a spraying operation in which a treatment bath is sprayed onto the wire using at least one spraying nozzle, c) a discharge operation in which the air and the treatment bath, not carried by the wire, is evacuated, d) a false twist operation in which an air false twist member twists the wire e) and possibly a wire drying operation, the operation of spraying can be carried out either upstream or downstream of the suction operation.
  • the bath contains a resin including pigments.
  • the bath contains a resin including pigments.
  • This device successively comprises, on the path of the wire, an air suction nozzle, at least one spray nozzle for a treatment bath, an air evacuation chamber and the excess treatment bath. and a false air torsion member.
  • the drying means consists of two heating drums, with offset axes, on which drums the wire is wound and moves in the form of substantially contiguous turns.
  • the present invention will be better understood on reading the description which will be given of a preferred embodiment of a continuous yarn dyeing installation, illustrated by the attached drawing in which:
  • - Figure 1 is a simplified representation of the installation
  • - Figure 2 is a sectional view of the device comprising the suction nozzle, the spray nozzle, the discharge chamber and the false twist member.
  • the wire 1 undergoes, on its moving path continuous, a succession of operations, namely a suction operation using an air suction nozzle 3, an operation for spraying a treatment bath using a spray part 4 comprising at least one nozzle, an operation for removing air and excess treatment bath thanks to an evacuation chamber 5, a false twist operation thanks to an air false twist member 6 and preferably a finishing operation in a finishing station 8 before be received at a receiving station 9.
  • a succession of operations namely a suction operation using an air suction nozzle 3, an operation for spraying a treatment bath using a spray part 4 comprising at least one nozzle, an operation for removing air and excess treatment bath thanks to an evacuation chamber 5, a false twist operation thanks to an air false twist member 6 and preferably a finishing operation in a finishing station 8 before be received at a receiving station 9.
  • the finishing station 8 is a drying station with two heating drums 1 0, 1 1 with offset axes, allowing the formation of substantially contiguous turns continuously moving on the peripheral surface of the two drums 1 0, 1 1.
  • the receiving station 9 is a single winder.
  • upstream of the suction nozzle 3 and downstream of the false-twist member 6 can also be disposed respectively 2.7 deliverers each consisting of a pair of food cylinders. Thanks to these deliverers it is possible to vary the instantaneous speeds of movement of the wire; if the speed at the first deliverer 2 is lower than that of the second deliverer 7, the wire 1 is tensioned or even stretched; in the opposite case, there is an overfeeding of the wire 1 in the assembly 1 2 comprising the suction, the spraying, the evacuation and the false twist. Similarly, it is possible to vary the instantaneous speed of the wire between the second deliverer 7 and the receiving means 9.
  • the suction nozzle 3 consists of a hollow part 1 3 comprising a central channel 14 for the passage of the wire 1, an annular chamber 1 5 supplied with compressed air by a pipe 1 6, and four pipes 1 7 connecting the room annular 1 5 to the central channel 14. These four conduits 1 7 are also distributed around the channel 14, radially to the axis DD of the said channel and inclined in the direction of movement of the wire according to the arrow F.
  • the compressed air coming from the pipe 1 6 fills the annular chamber 1 5 and is projected by the conduits 1 7 towards the inside of the central channel 14, obliquely, pushing the wire 1 in the direction of the arrow F.
  • the structure of the spray part 4 is similar to that which has just been described for the spray nozzle 3, with the hollow part 1 8, the central channel 1 9, the annular chamber 20, the supply line 21 and the four conduits 22.
  • the supply line 21 is supplied not with compressed air but by a pressure treatment bath which is distributed in the annular chamber 20 and is projected into the central channel 19 thanks to the conduit 22.
  • This projection of a high pressure liquid through a conduit of small diameter corresponds to a spraying of fine droplets which penetrate to the core in the wire 1 passing through the channel 19.
  • the discharge chamber 5 consists of a hollow part 23 comprising a central channel 24 for the passage of the wire 1 and laterally a discharge pipe 25 of large diameter opening out to a receptacle not shown, with filtering and possible recycling of the bath recovered.
  • the false-torsion member 6 consists of a hollow part 26 with a central channel 27, an annular chamber 28 supplied by a compressed air supply line 29 and four conduits 30 connecting the annular chamber 28 and the central channel 27
  • the central channel 27 is broken down, in the example illustrated in FIG. 2, into five successive portions.
  • the first portion 27a the most upstream in the direction of movement of the wire according to arrow F, is a converging frustoconical portion.
  • the other three following portions 27b, 27ç_ and 27d. are cylindrical portions of increasing diameter and the fifth portion 27e is a divergent frustoconical portion.
  • the four conduits 30 are disposed between the annular chamber 28 and the third portion 27c of the central channel 27 so that the compressed air penetrates tangentially with respect to said channel, creating a vortex movement inside said third portion 27c.
  • the second portion 27b has a small diameter which is slightly greater than the diameter of the wire 1 to be treated. Under these conditions, the air which escapes from the conduits 30 is preferentially driven downstream, that is to say towards the portions 27c to 27e, which gives the false torsion member 6 a component of suction, which further facilitates threading the wire at the start of the installation.
  • the converging frustoconical shape of the first portion 27a is also designed to facilitate this threading.
  • the small diameter of the second portion 27b also makes it possible to prevent the excess treatment bath coming from the central channel 4 from the evacuation chamber 5 from entering the false torsion member 6.
  • the embodiment which has just been described with regard to the assembly 1 2 is not limitative of the invention.
  • the number of conduits, their angle of inclination with respect to the axis DD, their section, the supply pressure for each conduit depend on the quantity of treatment bath to be deposited on the wire, on the viscosity of the treatment bath , the speed of movement of the wire ...
  • the device which has just been described has an important advantage, compared to this second version, namely that the air sent into the central channel 14 of the suction nozzle 3 in the direction of the arrow F prevents the rise, against the flow of movement of the wire 1, of the treatment bath droplets projected in the central channel 1 9 of the spray part 4. In operation there is therefore no flow of treatment bath escaping through the inlet 14a of the channel 14 of the suction nozzle 3.
  • the section of the evacuation pipe 25 is greater than or at least equal to that of the inlet orifice 14a of the suction nozzle 3.
  • the section of the central channel 19 of the spraying part 4 must be equal to or greater than that of the central channel 14 of the suction nozzle 3.
  • the three central channels 14, 1 9,24 had the same diameter of 5mm and the discharge pipe 25 has a diameter of 8.5mm.
  • the ducts 1 7, 22 had a diameter of the order of 0.5 to 0.8 mm.
  • the pressure of the compressed air supplying the suction nozzle 3 and the false-torsion member 6 was respectively 3 and 6.1 O 5 Pa (3 and 6 bars).
  • the supply pressure of the treatment bath in the line 21 of the spraying part 4 was 4.1 O 5 Pa (4 bars).
  • the passage of the wire 1 in the false twist member 6 also has the effect of achieving a mechanical spin of the wire, which explains the low take-up rate which it is possible to obtain thanks to the whole 1 2.
  • the wire 1 leaving the assembly 12 is dried on the two heating drums 10, 1 1 and then wound.
  • the two deliverers 2 and 7 make it possible to adjust the instantaneous speeds of the wire 1 during its movement upstream and downstream of the assembly 12 then between the assembly 12 and the winder 9. It is therefore possible, thanks to this adjustment instantaneous speeds, to achieve a supercharging of the wire 1 during its passage through the assembly 12.
  • the assembly constituted by the suction nozzle, the spraying part, the evacuation chamber and the member of false twist is formed in a one-piece form.

Landscapes

  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Materials Engineering (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Treatment Of Fiber Materials (AREA)
  • Yarns And Mechanical Finishing Of Yarns Or Ropes (AREA)
  • Absorbent Articles And Supports Therefor (AREA)
  • Coloring (AREA)
  • Spray Control Apparatus (AREA)

Abstract

The device for implementing the method comprises successively, on the passage of the thread (1), an air sucking nozzle (3), at least one nozzle (4) for pulverising a processing bath, a chamber for evacuating (5) air and processing bath excess and a member for false air twisting (6), these four elements preferably forming one single piece. In the pulverising nozzle (4) the processing bath is pulverised at high pressure, for instance between 2 to 6.10<5> Pa (2 to 6 bars) in the form of micro- droplets. The installation comprises after the device finishing means (8) preferably consisting of two heating cylinders (10, 11), with offset axes, on which cylinders the thread (1) is wound and is displaced in the form of contiguous spires.

Description

PROCEDE, DISPOSITIF ET INSTALLATION DE TRAITEMENT DE FILS METHOD, DEVICE AND INSTALLATION FOR TREATING WIRES
EN DEPLACEMENT CONTINUCONTINUOUSLY MOVING
La présente invention concerne le domaine du traitement à la continue de fils textiles, qu'il s'agisse de fils constitués d'une pluralité de filaments continus ou de fibres discontinues d'origine naturelle, synthétique ou artificielle.The present invention relates to the field of continuous treatment of textile yarns, whether they are yarns made up of a plurality of continuous filaments or staple fibers of natural, synthetic or artificial origin.
On connaît, notamment par les documents FR.2.098. 82 et FR.2.1 22.708 un procédé de traitement, notamment de teinture, à la continue dans lequel, après passage dans une chambre d'imprégnation, on fait passer le fil humide dans une zone parcourue par un courant d'air à une pression très inférieure à la pression régnant autour du fil lors de l'opération ayant provoqué son humidification. La zone à basse pression est créée dans l'écoulement supersonique d'un courant d'air à la sortie d'une tuyère convergente - divergente traversée par le fil. Une amélioration de ce procédé est décrite dans les documents FR.2.21 9.268 et FR.2.250.421 qui consiste à donner au courant d'air un mouvement tourbillonnaire sans que le fil ne soit mis en rotation.We know, in particular from the documents FR.2.098. 82 and FR.2.1 22.708 a continuous treatment, in particular dyeing process in which, after passing through an impregnation chamber, the wet wire is passed through an area traversed by a stream of air at a very high pressure lower than the pressure prevailing around the wire during the operation that caused it to humidify. The low pressure zone is created in the supersonic flow of an air stream at the outlet of a converging - divergent nozzle through which the wire passes. An improvement of this process is described in documents FR.2.21 9.268 and FR.2.250.421 which consists in giving the air flow a swirling motion without the wire being rotated.
Selon le demandeur, cette action d'essorage du fil par l'air est loin d'être suffisante pour éviter les projections de bain de traitement, notamment de colorants, à la sortie du dispositif mis en oeuvre, avant séchage. De plus , lors de la mise en route du procédé, l'enfilage du fil dans les différents organes d'imprégnation et d'essorage n'est pas aisée et nécessite l'emploi de passettes , qui sont des fines tiges de fil de fer.According to the applicant, this action of wiping the wire with air is far from sufficient to avoid splashes of treatment bath, in particular dyes, at the outlet of the device used, before drying. In addition, when the process is started, threading the wire into the various impregnation and wringing members is not easy and requires the use of passettes, which are fine rods of wire. .
On connaît également par le document FR.2.282.492 un procédé de traitement à la continue destinée principalement à traiter un ruban fibreux à l'aide d'un organe de fausse torsion en vue de détordre ce ruban après que celui-ci ait reçu une injection d'un liquide , qui peut être un liquide coloré. Dans ce procédé, à la sortie de l'organe de fausse torsion, le ruban fibreux est entouré d'une gaine liquide qui, dans l'application préférée, permet de lier par adhérence les fibres du ruban. La présente invention a pour but de permettre de réaliser le traitement de toutes sortes de fils , constitués de fibres ou de filaments continus, en évitant les projections non maîtrisées de bain de traitement et en garantissant un enfilage aisé du fil lors du démarrage du procédé. Ce but est parfaitement atteint par le procédé de traitement de fils en déplacement continu qui , de manière caractéristique, comprend les opérations successives suivantes , prises dans le sens du déplacement du fil : a) une opération d'aspiration dans laquelle le fil est aspiré à travers une buse d'aspiration à air, b) une opération de pulvérisation dans laquelle un bain de traitement est pulvérisé sur le fil à l'aide d'au moins une buse de pulvérisation, c) une opération d'évacuation dans laquelle l'air et le bain de traitement, non emporté par le fil, est évacué, d) une opération de fausse torsion dans laquelle un organe de fausse torsion à air tord le fil e) et éventuellement une opération de séchage du fil, l'opération de pulvérisation pouvant être réalisée soit en amont soit en aval de l'opération d'aspiration.Document FR.2.282.492 also discloses a continuous treatment method intended mainly for treating a fibrous ribbon using a false twist member in order to untwist this ribbon after it has received a injection of a liquid, which can be a colored liquid. In this process, at the exit from the false twist member, the fibrous ribbon is surrounded by a liquid sheath which, in the preferred application, makes it possible to bond the fibers of the ribbon by adhesion. The object of the present invention is to make it possible to carry out the treatment of all kinds of threads, consisting of continuous fibers or filaments, avoiding uncontrolled splashes of treatment bath and ensuring easy threading of the thread when the process is started. This object is perfectly achieved by the method of treating wires in continuous movement which, typically, comprises the following successive operations, taken in the direction of movement of the wire: a) a suction operation in which the wire is sucked in through an air suction nozzle, b) a spraying operation in which a treatment bath is sprayed onto the wire using at least one spraying nozzle, c) a discharge operation in which the air and the treatment bath, not carried by the wire, is evacuated, d) a false twist operation in which an air false twist member twists the wire e) and possibly a wire drying operation, the operation of spraying can be carried out either upstream or downstream of the suction operation.
Selon ce procédé et contrairement à l'enseignement du document FR.2.098.482 il n'y a pas une imprégnation complète du fil par passage dans un bain de traitement, mais pulvérisation dudit bain de traitement, cette pulvérisation étant réalisée de préférence sous haute pression pour forcer le bain de traitement à pénétrer à coeur dans le fil en déplacement. La quantité de bain pulvérisé est réglée en fonction du taux d'emport qui est souhaité, de sorte que l'air de la buse d'aspiration réalise l'évacuation du surplus de bain de traitement. Bien sûr la fonction première de la buse d'aspiration à air est de provoquer sur le fil une traction dans la direction de son déplacement , cette traction permettant de réaliser , lors de la mise en route du procédé, l'enfilage du fil sans qu'il soit nécessaire d'utiliser des moyens mécaniques. De préférence l'opération de pulvérisation , lors de l'introduction du fil au démarrage du procédé, n'est mise en route qu'après l'enfilage du fil.According to this method and contrary to the teaching of the document FR.2.098.482 there is not a complete impregnation of the wire by passage in a treatment bath, but spraying of said treatment bath, this spraying being preferably carried out under high pressure to force the treatment bath to penetrate through the moving wire. The amount of spray bath is adjusted according to the desired removal rate, so that the air from the suction nozzle evacuates the excess treatment bath. Of course the primary function of the air suction nozzle is to cause the wire to be pulled in the direction of its movement, this pulling making it possible, when the process is started, to thread the thread without 'it is necessary to use mechanical means. Preferably the spraying operation, during the introduction of the wire at the start of the process, is not start up only after threading.
Avantageusement, s'agissant d'un bain de teinture, le bain contient une résine incluant des pigments. Dans ce cas il est possible d'obtenir un fil teint uniquement après l'opération de séchage et sans qu'il soit besoin de traitement de vaporisage ou de thermofixation.Advantageously, being a dye bath, the bath contains a resin including pigments. In this case it is possible to obtain a dyed thread only after the drying operation and without the need for spraying or heat setting treatment.
C'est un autre objet de l'invention que de proposer un dispositif spécialement conçu pour la mise en oeuvre des opérations a) à d) du procédé précité. Ce dispositif comprend successivement, sur le parcours du fil , une buse d'aspiration à air, au moins une buse de pulvérisation d'un bain de traitement, une chambre d'évacuation de l'air et de l'excès de bain de traitement et un organe de fausse torsion à air.It is another object of the invention to propose a device specially designed for the implementation of operations a) to d) of the aforementioned process. This device successively comprises, on the path of the wire, an air suction nozzle, at least one spray nozzle for a treatment bath, an air evacuation chamber and the excess treatment bath. and a false air torsion member.
C'est un autre objet de l'invention que de proposer une installation de traitement de fil à la continue qui comporte, sur le parcours et dans le sens de déplacement du fil, un premier délivreur, le dispositif précité , un second délivreur, un moyen de séchage , de thermofixation ou de vaporisage et un moyen de réception.It is another object of the invention to propose a continuous wire processing installation which comprises, on the path and in the direction of movement of the wire, a first deliverer, the aforementioned device, a second deliverer, a drying, thermofixing or spraying means and receiving means.
De préférence le moyen de séchage consiste en deux tambours chauffants , d'axes décalés , sur lesquels tambours le fil est enroulé et se déplace sous forme de spires sensiblement jointives. La présente invention sera mieux comprise à la lecture de la description qui va être faite d'un exemple préféré de réalisation d'une installation de teinture de fil à la continue, illustré par le dessin annexé dans lequel :Preferably the drying means consists of two heating drums, with offset axes, on which drums the wire is wound and moves in the form of substantially contiguous turns. The present invention will be better understood on reading the description which will be given of a preferred embodiment of a continuous yarn dyeing installation, illustrated by the attached drawing in which:
- La figure 1 est une représentation simplifiée de l'installation, - La figure 2 est une vue en coupe du dispositif comprenant la buse d'aspiration, la buse de pulvérisation , la chambre d'évacuation et l'organe de fausse torsion.- Figure 1 is a simplified representation of the installation, - Figure 2 is a sectional view of the device comprising the suction nozzle, the spray nozzle, the discharge chamber and the false twist member.
- Les figures 3,4,5 sont des vues en coupe suivant les axes lll-lll, IV-IV et V-V de la figure 2. Selon le procédé de traitement de l'invention , le fil 1 subit , sur son parcours en déplacement continu, une succession d'opérations , à savoir une opération d'aspiration grâce à une buse d'aspiration à air 3, une opération de pulvérisation d'un bain de traitement à l'aide d'une pièce de pulvérisation 4 comprenant au moins une buse, une opération d'évacuation de l'air et du bain de traitement en excès grâce à une chambre d'évacuation 5, une opération de fausse torsion grâce à un organe de fausse torsion à air 6 et de préférence une opération de finition dans un poste de finition 8 avant d'être réceptionnée à un poste de réception 9. Dans l'exemple illustré, le poste de finition 8 est un poste de séchage à deux tambours chauffants 1 0, 1 1 d'axes décalés, permettant la formation de spires sensiblement jointives se déplaçant continûment sur la surface périphérique des deux tambours 1 0, 1 1 . Le poste de réception 9 est un simple bobinoir.- Figures 3,4,5 are sectional views along the axes lll-lll, IV-IV and VV of Figure 2. According to the processing method of the invention, the wire 1 undergoes, on its moving path continuous, a succession of operations, namely a suction operation using an air suction nozzle 3, an operation for spraying a treatment bath using a spray part 4 comprising at least one nozzle, an operation for removing air and excess treatment bath thanks to an evacuation chamber 5, a false twist operation thanks to an air false twist member 6 and preferably a finishing operation in a finishing station 8 before be received at a receiving station 9. In the example illustrated, the finishing station 8 is a drying station with two heating drums 1 0, 1 1 with offset axes, allowing the formation of substantially contiguous turns continuously moving on the peripheral surface of the two drums 1 0, 1 1. The receiving station 9 is a single winder.
Sur le parcours du fil , en amont de la buse d'aspiration 3 et en aval de l'organe de fausse torsion 6 peuvent être disposés également des délivreurs respectivement 2,7 constitués chacun d'une paire de cylindres alimentaires. Grâce à ces délivreurs il est possible de faire varier les vitesses instantanées de déplacement du fil ; si la vitesse au premier délivreur 2 est inférieure à celle du second délivreur 7 , le fil 1 est mis sous tension voire étiré ; dans le cas inverse on réalise une suralimentation du fil 1 dans l'ensemble 1 2 comprenant l'aspiration, la pulvérisation, l'évacuation et la fausse torsion. De même il est possible de faire varier les vitesse instantanées du fil entre le second délivreur 7 et le moyen de réception 9.On the path of the wire, upstream of the suction nozzle 3 and downstream of the false-twist member 6 can also be disposed respectively 2.7 deliverers each consisting of a pair of food cylinders. Thanks to these deliverers it is possible to vary the instantaneous speeds of movement of the wire; if the speed at the first deliverer 2 is lower than that of the second deliverer 7, the wire 1 is tensioned or even stretched; in the opposite case, there is an overfeeding of the wire 1 in the assembly 1 2 comprising the suction, the spraying, the evacuation and the false twist. Similarly, it is possible to vary the instantaneous speed of the wire between the second deliverer 7 and the receiving means 9.
La buse d'aspiration 3 est constituée d'une pièce creuse 1 3 comprenant un canal central 14 pour le passage du fil 1 , une chambre annulaire 1 5 alimentée en air comprimé par une conduite 1 6, et quatre conduits 1 7 reliant la chambre annulaire 1 5 au canal central 14. Ces quatre conduits 1 7 sont également répartis autour du canal 14 , radialement à l'axe DD dudit canal et inclinés dans la direction de déplacement du fil selon la flèche F. L'air comprimé provenant de la conduite 1 6 remplit la chambre annulaire 1 5 et est projeté par les conduits 1 7 vers l'intérieur du canal central 14, obliquement , poussant le fil 1 dans la direction de la flèche F. Il est à noter que lorsqu'on présente une extrémité libre d'un fil à l'entrée 14a du canal central 14, cette extrémité est aspirée naturellement du fait de la dépression créée par le flux d'air à l'intérieur du canal 14. C'est ce qui permet d'obtenir un enfilage facile du fil dans l'ensemble 1 2.The suction nozzle 3 consists of a hollow part 1 3 comprising a central channel 14 for the passage of the wire 1, an annular chamber 1 5 supplied with compressed air by a pipe 1 6, and four pipes 1 7 connecting the room annular 1 5 to the central channel 14. These four conduits 1 7 are also distributed around the channel 14, radially to the axis DD of the said channel and inclined in the direction of movement of the wire according to the arrow F. The compressed air coming from the pipe 1 6 fills the annular chamber 1 5 and is projected by the conduits 1 7 towards the inside of the central channel 14, obliquely, pushing the wire 1 in the direction of the arrow F. It should be noted that when a free end of a wire is presented at the inlet 14a of the central channel 14, this end is naturally sucked in due to the vacuum created by the air flow inside the channel 14. This makes it possible to obtain easy threading of the wire in the assembly 1 2.
Dans l'exemple illustré, la structure de la pièce 4 de pulvérisation est similaire à celle qui vient d'être décrite pour la buse 3 de pulvérisation, avec la pièce creuse 1 8, le canal central 1 9, la chambre annulaire 20, la conduite d'alimentation 21 et les quatre conduits 22. La conduite d'alimentation 21 est alimentée non pas en air comprimé mais par un bain de traitement sous pression qui se répartit dans la chambre annulaire 20 et est projetée dans le canal central 19 grâce au conduit 22. Cette projection d'un liquide à haute pression par un conduit de faible diamètre correspond à une pulvérisation de fines gouttelettes qui pénètrent à coeur dans le fil 1 passant dans le canal 19.In the example illustrated, the structure of the spray part 4 is similar to that which has just been described for the spray nozzle 3, with the hollow part 1 8, the central channel 1 9, the annular chamber 20, the supply line 21 and the four conduits 22. The supply line 21 is supplied not with compressed air but by a pressure treatment bath which is distributed in the annular chamber 20 and is projected into the central channel 19 thanks to the conduit 22. This projection of a high pressure liquid through a conduit of small diameter corresponds to a spraying of fine droplets which penetrate to the core in the wire 1 passing through the channel 19.
La chambre d'évacuation 5 est constituée d'une pièce creuse 23 comprenant un canal central 24 pour le passage du fil 1 et latéralement une conduite 25 d'évacuation de grand diamètre débouchant vers un réceptacle non représenté, avec filtrage et recyclage éventuel du bain récupéré.The discharge chamber 5 consists of a hollow part 23 comprising a central channel 24 for the passage of the wire 1 and laterally a discharge pipe 25 of large diameter opening out to a receptacle not shown, with filtering and possible recycling of the bath recovered.
L'organe de fausse torsion 6 est constitué d'une pièce creuse 26 avec un canal central 27 , une chambre annulaire 28 alimentée par une conduite d'alimentation en air comprimé 29 et quatre conduits 30 reliant la chambre annulaire 28 et le canal central 27. Le canal central 27 se décompose, dans l'exemple illustré à la figure 2 , en cinq portions successives . La première portion 27a, la plus en amont dans le sens du déplacement du fil selon la flèche F ,est une portion tronconique convergente. Les trois autres portions suivantes 27b, 27ç_ et 27d. sont des portions cylindriques de diamètre croissant et la cinquième portion 27e est une portion tronconique divergente. Les quatre conduits 30 sont disposés entre la chambre annulaire 28 et la troisième portion 27ç_ du canal central 27 de telle sorte que l'air comprimé pénètre tangentiellement par rapport audit canal, créant un mouvement tourbillonnaire à l'intérieur de ladite troisième portion 27c. La deuxième portion 27b a un diamètre faible qui est légèrement supérieur au diamètre du fil 1 à traiter . Dans ces conditions , l'air qui s'échappe des conduits 30 est entraîné préférentiellement vers l'aval c'est-à-dire vers les portions 27ç à 27e, ce qui confère à l'organe de fausse torsion 6 une composante d'aspiration , qui facilite encore l'enfilage du fil au démarrage de l'installation. La forme tronconique convergente de la première portion 27a est d'ailleurs conçue pour faciliter cet enfilage. De plus le faible diamètre de la deuxième portion 27b permet également d'éviter que le bain de traitement en excès provenant du canal central 4 de la chambre d'évacuation 5 pénètre dans l'organe de fausse torsion 6.The false-torsion member 6 consists of a hollow part 26 with a central channel 27, an annular chamber 28 supplied by a compressed air supply line 29 and four conduits 30 connecting the annular chamber 28 and the central channel 27 The central channel 27 is broken down, in the example illustrated in FIG. 2, into five successive portions. The first portion 27a, the most upstream in the direction of movement of the wire according to arrow F, is a converging frustoconical portion. The other three following portions 27b, 27ç_ and 27d. are cylindrical portions of increasing diameter and the fifth portion 27e is a divergent frustoconical portion. The four conduits 30 are disposed between the annular chamber 28 and the third portion 27c of the central channel 27 so that the compressed air penetrates tangentially with respect to said channel, creating a vortex movement inside said third portion 27c. The second portion 27b has a small diameter which is slightly greater than the diameter of the wire 1 to be treated. Under these conditions, the air which escapes from the conduits 30 is preferentially driven downstream, that is to say towards the portions 27c to 27e, which gives the false torsion member 6 a component of suction, which further facilitates threading the wire at the start of the installation. The converging frustoconical shape of the first portion 27a is also designed to facilitate this threading. In addition, the small diameter of the second portion 27b also makes it possible to prevent the excess treatment bath coming from the central channel 4 from the evacuation chamber 5 from entering the false torsion member 6.
Le mode de réalisation qui vient d'être décrit en ce qui concerne l'ensemble 1 2 n'est pas limitatif de l'invention. Le nombre de conduits, leur angle d'inclinaison par rapport à l'axe DD, leur section , la pression d'alimentation pour chaque conduite dépendent de la quantité de bain de traitement à déposer sur le fil , de la viscosité du bain de traitement , de la vitesse de déplacement du fil...The embodiment which has just been described with regard to the assembly 1 2 is not limitative of the invention. The number of conduits, their angle of inclination with respect to the axis DD, their section, the supply pressure for each conduit depend on the quantity of treatment bath to be deposited on the wire, on the viscosity of the treatment bath , the speed of movement of the wire ...
Il serait éventuellement possible d'inverser la buse d'aspiration 3 et la pièce de pulvérisation 4. Cependant il est à noter que le dispositif qui vient d'être décrit présente un avantage important , comparativement à cette seconde version, à savoir que l'air envoyé dans le canal central 14 de la buse d'aspiration 3 dans la direction de la flèche F empêche la remontée , à contre-courant du déplacement du fil 1 , des gouttelettes de bain de traitement projetées dans le canal central 1 9 de la pièce de pulvérisation 4. En fonctionnement il n'y a donc pas de coulure de bain de traitement s'echappant par l'entrée 14a du canal 14 de la buse d'aspiration 3. Pour que l'évacuation de l'air et du bain de traitement excédentaire se réalise dans de bonnes conditions , il importe que la section de la conduite 25 d'évacuation soit supérieure ou au moins égale à celle de l'orifice d'entrée 14a de la buse d'aspiration 3. De même la section du canal central 19 de la pièce de pulvérisation 4 doit être égale ou supérieure à celle du canal central 14 de la buse d'aspiration 3.It would possibly be possible to reverse the suction nozzle 3 and the spraying part 4. However, it should be noted that the device which has just been described has an important advantage, compared to this second version, namely that the air sent into the central channel 14 of the suction nozzle 3 in the direction of the arrow F prevents the rise, against the flow of movement of the wire 1, of the treatment bath droplets projected in the central channel 1 9 of the spray part 4. In operation there is therefore no flow of treatment bath escaping through the inlet 14a of the channel 14 of the suction nozzle 3. In order for the evacuation of the air and of the excess treatment bath to be carried out under good conditions, it is important that the section of the evacuation pipe 25 is greater than or at least equal to that of the inlet orifice 14a of the suction nozzle 3. Similarly, the section of the central channel 19 of the spraying part 4 must be equal to or greater than that of the central channel 14 of the suction nozzle 3.
Dans un exemple précis de réalisation, qui est donné à titre illustratif et non exhaustif , les trois canaux centraux 14, 1 9,24 avaient le même diamètre de 5mm et la conduite d'évacuation 25 a un diamètre de 8,5mm. Les conduits 1 7, 22 avaient un diamètre de l'ordre de 0,5 à 0,8mm. La pression de l'air comprimé alimentant la buse d'aspiration 3 et l'organe de fausse torsion 6 était respectivement de 3 et de 6.1 O5 Pa (3 et 6 bars) . La pression d'alimentation du bain de traitement dans la conduite 21 de la pièce de pulvérisation 4 était de 4.1 O5 Pa (4 bars). Dans ces conditions avec un bain de traitement comportant une concentration de l'ordre de 1 OOg/l d'une résine pigmentée , du type acrylique, on a obtenu pour un fil acrylique de 33 tex et à des vitesses de plusieurs centaines de mètres par minute un taux d'emport de l'ordre de 1 0 à 20% en sortie de l'ensemble 1 2, le taux d'emport étant , en proportion par rapport au poids sec du fil, la quantité de bain de traitement emportée par celui-ci. De plus la répartition de la résine pigmentée dans la section transversale du fil s'avère parfaitement homogène. On peut à cela donner l'explication suivante. Les gouttelettes sont projetées sur le fil à très grande vitesse et pénètrent au coeur du fil; cette pénétration est encore améliorée par la torsion temporaire provoquée par l'organe de fausse torsion 6 , torsion qui remonte sur le fil au moins au niveau de la chambre d'évacuation 5 .In a specific embodiment, which is given by way of illustration and not exhaustive, the three central channels 14, 1 9,24 had the same diameter of 5mm and the discharge pipe 25 has a diameter of 8.5mm. The ducts 1 7, 22 had a diameter of the order of 0.5 to 0.8 mm. The pressure of the compressed air supplying the suction nozzle 3 and the false-torsion member 6 was respectively 3 and 6.1 O 5 Pa (3 and 6 bars). The supply pressure of the treatment bath in the line 21 of the spraying part 4 was 4.1 O 5 Pa (4 bars). Under these conditions, with a treatment bath comprising a concentration of the order of 1 OOg / l of a pigmented resin, of the acrylic type, an acrylic yarn of 33 tex was obtained at speeds of several hundred meters per minute a take-up rate of the order of 1 0 to 20% at the outlet of the assembly 1 2, the take-off rate being, in proportion to the dry weight of the wire, the amount of treatment bath carried away by this one. In addition, the distribution of the pigmented resin in the cross section of the wire turns out to be perfectly homogeneous. We can give the following explanation. The droplets are projected onto the wire at very high speed and penetrate the heart of the wire; this penetration is further improved by the temporary torsion caused by the false torsion member 6, a torsion which rises on the wire at least at the level of the evacuation chamber 5.
Il est également à noter que le passage du fil 1 dans l'organe de fausse torsion 6 a également pour effet de réaliser un essorage mécanique du fil , ce qui explique le faible taux d'emport qu'il est possible d'obtenir grâce à l'ensemble 1 2. Dans l'installation qui est illustrée à la figure 1 , le fil 1 sortant de l'ensemble 12 est séché sur les deux tambours chauffants 10, 1 1 puis bobiné. Les deux délivreurs 2 et 7 permettent de régler les vitesses instantanées du fil 1 au cours de son déplacement en amont et en aval de l'ensemble 12 puis entre l'ensemble 12 et le bobinoir 9. Il est donc possible , grâce à ce réglage des vitesses instantanées , de réaliser une suralimentation du fil 1 lors de son passage dans l'ensemble 12. Cette possibilité s'avère particulièrement intéressante pour le traitement de fils multifilamentaires textures non thermofixés, par exemple des fils de polyester. Ceci permet d'éviter toutes les opérations habituellement souhaitables si l'on veut obtenir en final un fil texture particulièrement volumineux et gonflant. Selon le demandeur la mise en oeuvre de l'installation selon l'invention procure sur ce type de produit des résultats meilleurs qu'une teinture sur écheveaux . La mise en oeuvre de vitesses différentes localisées comme ci-dessus s'avère particulièrement intéressante lorsqu'il s'agit de maintenir sur un fil donné un effet mousse ou élastique.It should also be noted that the passage of the wire 1 in the false twist member 6 also has the effect of achieving a mechanical spin of the wire, which explains the low take-up rate which it is possible to obtain thanks to the whole 1 2. In the installation which is illustrated in FIG. 1, the wire 1 leaving the assembly 12 is dried on the two heating drums 10, 1 1 and then wound. The two deliverers 2 and 7 make it possible to adjust the instantaneous speeds of the wire 1 during its movement upstream and downstream of the assembly 12 then between the assembly 12 and the winder 9. It is therefore possible, thanks to this adjustment instantaneous speeds, to achieve a supercharging of the wire 1 during its passage through the assembly 12. This possibility turns out to be particularly advantageous for the treatment of textured multifilament yarns which are not heat-set, for example polyester yarns. This makes it possible to avoid all the operations usually desirable if it is desired to obtain in the end a particularly bulky and swelling textured yarn. According to the applicant, the implementation of the installation according to the invention provides better results on this type of product than dyeing hanks. The implementation of different localized speeds as above is particularly advantageous when it comes to maintaining a foam or elastic effect on a given wire.
De préférence, pour des raisons de facilité de montage et aussi d'interaction des différents éléments les uns par rapport aux autres, l'ensemble constitué par la buse d'aspiration, la pièce de pulvérisation, la chambre d'évacuation et l'organe de fausse torsion est constitué sous une forme monobloc. Preferably, for reasons of ease of assembly and also of interaction of the various elements with respect to each other, the assembly constituted by the suction nozzle, the spraying part, the evacuation chamber and the member of false twist is formed in a one-piece form.

Claims

REVENDICATIONS
1 . Procédé de traitement d'un fil en déplacement continu qui comprend les opérations successives suivantes , prises dans le sens du déplacement du fil ( 1 ) : a) une opération d'aspiration dans laquelle le fil (1 ) est aspiré à travers une buse d'aspiration à air (3), b) une opération de pulvérisation dans laquelle un bain de traitement est pulvérisé sur le fil (1 ) à l'aide d'au moins une buse de pulvérisation (4), c) une opération d'évacuation dans laquelle l'air et le bain de traitement, non emporté par le fil (1 ) , sont évacués, d) une opération de fausse torsion dans laquelle un organe de fausse torsion à air (6) tord le fil, e) et éventuellement une opération de séchage du fil, l'opération de pulvérisation pouvant être réalisée soit en amont soit en aval de l'opération d'aspiration.1. A method of treating a continuously moving wire which comprises the following successive operations, taken in the direction of movement of the wire (1): a) a suction operation in which the wire (1) is sucked through a nozzle d air suction (3), b) a spraying operation in which a treatment bath is sprayed onto the wire (1) using at least one spraying nozzle (4), c) a spraying operation evacuation in which the air and the treatment bath, not carried by the wire (1), are evacuated, d) a false twist operation in which an air false twist member (6) twists the wire, e) and optionally a wire drying operation, the spraying operation can be performed either upstream or downstream of the suction operation.
2. Procédé selon la revendication 1 caractérisé en ce que dans l'opération de pulvérisation le bain de traitement est pulvérisé sous haute pression , par exemple de l'ordre de 2 à 6.1 O5 Pa.2. Method according to claim 1 characterized in that in the spraying operation the treatment bath is sprayed under high pressure, for example of the order of 2 to 6.1 O 5 Pa.
3. Procédé selon la revendication 1 caractérisé en ce que l'opération de pulvérisation, lors de l'introduction du fil au démarrage du procédé, n'est mise en route qu'après l'enfilage du fil.3. Method according to claim 1 characterized in that the spraying operation, during the introduction of the wire at the start of the process, is not started until after threading of the wire.
4. Procédé selon l'une des revendications 1 ou 2 caractérisé en ce que s'agissant d'un bain de teinture, le bain contient une résine incluant des pigments. 4. Method according to one of claims 1 or 2 characterized in that being a dye bath, the bath contains a resin including pigments.
5. Dispositif pour la mise en oeuvre des opérations a) à d) du procédé de la revendication 1 caractérisé en ce qu'il comprend successivement , sur le parcours du fil (1 ) , une buse d'aspiration à air (3), au moins une buse de pulvérisation (4) d'un bain de traitement , une chambre d'évacuation (5) de l'air et de l'excès de bain de traitement et un organe de fausse torsion à air (6) .5. Device for carrying out operations a) to d) of the method of claim 1 characterized in that it successively comprises, on the path of the wire (1), an air suction nozzle (3), at least one spray nozzle (4) of a treatment bath, an evacuation chamber (5) of the air and the excess of treatment bath and a false air twist member (6).
6. Dispositif selon la revendication 5 caractérisé en ce que la buse d'aspiration (3) est constituée d'une pièce creuse ( 1 3) comprenant un canal central ( 14) pour le passage du fil (1 ) , une chambre annulaire ( 1 5) alimentée en air comprimé par une conduite (16) et une pluralité de conduits ( 1 7) reliant la chambre annulaire ( 1 5) au canal central (14), lesdits conduits étant disposés radialement à l'axe DD du canal ( 14) et inclinés dans la direction de déplacement du fil (F).6. Device according to claim 5 characterized in that the nozzle suction (3) consists of a hollow part (1 3) comprising a central channel (14) for the passage of the wire (1), an annular chamber (1 5) supplied with compressed air by a pipe (16) and a plurality of conduits (1 7) connecting the annular chamber (1 5) to the central channel (14), said conduits being arranged radially to the axis DD of the channel (14) and inclined in the direction of movement of the wire (F ).
7. Dispositif selon la revendication 5 caractérisé en ce que la pièce de pulvérisation (4) est constituée d'une pièce creuse ( 1 8) comprenant un canal central ( 1 9) pour le passage du fil, une chambre annulaire (20) alimentée en bain de traitement sous pression par une conduite (21 ) et une pluralité de conduits (22) reliant radialement la chambre annulaire (20) au canal central (19).7. Device according to claim 5 characterized in that the spraying part (4) consists of a hollow part (1 8) comprising a central channel (1 9) for the passage of the wire, an annular chamber (20) supplied in a pressure treatment bath by a line (21) and a plurality of lines (22) radially connecting the annular chamber (20) to the central channel (19).
8. Dispositif selon l'une des revendications 5 à 7 caractérisé en ce que la chambre d'évacuation (5) est constituée d'une pièce creuse (23) comprenant un canal central (24) pour le passage du fil (1 ) et latéralement une conduite (25) d'évacuation et en ce que la section de la conduite (25) d'évacuation est supérieure ou égale à la section d'entrée du fil dans la buse d'aspiration à air (3) .8. Device according to one of claims 5 to 7 characterized in that the evacuation chamber (5) consists of a hollow part (23) comprising a central channel (24) for the passage of the wire (1) and laterally an evacuation pipe (25) and in that the section of the evacuation pipe (25) is greater than or equal to the section of entry of the wire into the air suction nozzle (3).
9. Dispositif selon l'une des revendications 5 à 8 caractérisé en ce que la buse d'aspiration à air , la pièce de pulvérisation, la chambre d'évacuation et l'organe de fausse torsion forment un ensemble monobloc.9. Device according to one of claims 5 to 8 characterized in that the air suction nozzle, the spray part, the discharge chamber and the false twist member form a one-piece assembly.
1 0. Installation de traitement de fil à la continue qui comporte , sur le parcours et dans le sens de déplacement du fil, un premier délivreur (2), le dispositif ( 1 2) selon l'une des revendications 5 à 9, un second délivreur (7), un moyen de finition (8) et un moyen de réception (9) .1 0. Continuous wire processing installation which comprises, on the path and in the direction of movement of the wire, a first deliverer (2), the device (1 2) according to one of claims 5 to 9, a second deliverer (7), finishing means (8) and receiving means (9).
1 1 . Installation selon la revendication 1 0 caractérisée en ce que le moyen de finition (8) consiste en deux tambours chauffants ( 1 0, 1 1 ), d'axes décalés , sur lesquels tambours le fil (1 ) est enroulé et se déplace sous forme de spires sensiblement jointives. 1 1. Installation according to claim 1 0 characterized in that the finishing means (8) consists of two heating drums (1 0, 1 1), with offset axes, on which drums the wire (1) is wound and moves in the form substantially contiguous turns.
EP97944944A 1996-10-09 1997-10-08 Method, device and installation for the continuous displacement processing of threads Expired - Lifetime EP0934436B1 (en)

Applications Claiming Priority (3)

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FR9612581A FR2754279B1 (en) 1996-10-09 1996-10-09 CONTINUOUS DYEING OF FIBER YARNS AND YARNS
FR9612581 1996-10-09
PCT/FR1997/001796 WO1998015680A1 (en) 1996-10-09 1997-10-08 Method, device and installation for the continuous displacement processing of threads

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ATE199029T1 (en) 2001-02-15
EP0934436B1 (en) 2001-01-31
ES2156637T3 (en) 2001-07-01
FR2754279B1 (en) 1998-12-04
AU4627597A (en) 1998-05-05
FR2754279A1 (en) 1998-04-10
GR3035802T3 (en) 2001-07-31
WO1998015680A1 (en) 1998-04-16
US6513315B1 (en) 2003-02-04

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