EP0568467A1 - Method for the processing of chemical yarns notably during a texturing process and the textile machine for carrying out this method - Google Patents

Method for the processing of chemical yarns notably during a texturing process and the textile machine for carrying out this method Download PDF

Info

Publication number
EP0568467A1
EP0568467A1 EP93420129A EP93420129A EP0568467A1 EP 0568467 A1 EP0568467 A1 EP 0568467A1 EP 93420129 A EP93420129 A EP 93420129A EP 93420129 A EP93420129 A EP 93420129A EP 0568467 A1 EP0568467 A1 EP 0568467A1
Authority
EP
European Patent Office
Prior art keywords
wire
tube
cooling
air
guide
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
EP93420129A
Other languages
German (de)
French (fr)
Other versions
EP0568467B1 (en
Inventor
Carlos Matas Gabalda
Pierre Mirabel
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.)
ICBT Roanne SA
Original Assignee
ICBT Roanne SA
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 ICBT Roanne SA filed Critical ICBT Roanne SA
Publication of EP0568467A1 publication Critical patent/EP0568467A1/en
Application granted granted Critical
Publication of EP0568467B1 publication Critical patent/EP0568467B1/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
    • D02G1/02—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
    • 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
    • D02J13/00—Heating or cooling the yarn, thread, cord, rope, or the like, not specific to any one of the processes provided for in this subclass
    • D02J13/001—Heating or cooling the yarn, thread, cord, rope, or the like, not specific to any one of the processes provided for in this subclass in a tube or vessel
    • 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
    • D02J13/00—Heating or cooling the yarn, thread, cord, rope, or the like, not specific to any one of the processes provided for in this subclass
    • D02J13/003—Heating or cooling the yarn, thread, cord, rope, or the like, not specific to any one of the processes provided for in this subclass by contact with at least one stationary surface, e.g. a plate

Definitions

  • the present invention relates to a method for treating a moving wire, and more particularly a method of cooling the wire after passing through an oven during a texturing operation, in particular by false twisting.
  • the present invention applies to all types of monofilament or multifilament yarns, even a procession of fibers.
  • the method according to the invention making it possible to cool a wire in motion at the outlet of an oven before passing through a processing member such as a false twist pin, consists in passing said wire through the inside a tube traversed by a stream of fresh air or other gaseous product, said stream of air being directed in a direction opposite to the direction of passage of the wire, and it is characterized in that during this cooling phase , the wire is kept in contact with a bearing or guiding surface arranged coaxially inside the tube through which the air stream which flows along said guiding surface passes.
  • the outer tube is of cylindrical section and the coaxial guide surface is itself constituted by a cylindrical element, the air stream flowing along said surface in the space between said tube.
  • the material making it possible to produce the guide surface any material having mechanical characteristics such that it resists abrasion will be used, without altering the properties of the wire, such as for example ceramic. It is however advantageous to use a material which also has, in addition to the above characteristics, that of also being a good thermal conductor, which further improves the cooling process; such a material can for example consist of stainless steel having received a surface treatment (plasma, etc.).
  • the passage of the wire against the guide surface is carried out so that it forms a helix around the latter; advantageously, the wire surrounds said guide surface over 180 ° between its entry and its exit from the cooling zone.
  • the guide of the wire is advantageously obtained by making the connection between the guide surface and the outer tube by means of "pins" arranged at the ends of the assembly and offset angularly one with respect to the other.
  • the outer tube also has a longitudinal slot facilitating the introduction of the wire; such an embodiment makes it possible to automatically obtain a positioning of the propeller against the surface disposed inside the outer tube.
  • the invention also relates to an installation implementing such a method.
  • cooling means consist of an assembly comprising a tube traversed by a stream of fresh air or other gaseous product, directed in the opposite direction to the direction of passage of the wire and inside which is disposed. , coaxially, a bearing surface for said wire.
  • said guide or support surface is in the form of a rectilinear block, of cylindrical cross section, and outside of which comes to bear the wire during its displacement.
  • the path of the wire against the guide surface is produced by forming a helix between the inlet and the outlet of the cooling assembly; in this embodiment, the guiding of the helical wire is obtained by providing, at least one inlet and one outlet for the cooling assembly of the "pins" connecting the internal cylindrical surface to the external surface, and which are angularly offset with respect to each other, such elements making it possible not only to ensure the automatic positioning of the wire inside the cooling assembly, but also the connection between the external envelope and the core ( guide surface) internal.
  • Such a cooling assembly is aligned with the outlet of the oven and the false twist spindle, and can be arranged in any position, either horizontally or slightly inclined downward in the direction of movement of the wire, either vertically or making any angle to the vertical.
  • a second fixing oven can be provided between the last call (8) and the winding system (3).
  • the cooling zone produced in accordance with the invention consists essentially of an assembly (6) arranged in the extension and near the outlet of the oven (5), and preferably aligned with the false twist pin (7) to obtain a substantially straight path of the wire.
  • This cooling assembly is constituted by a tube (10), preferably of cylindrical section, and which has a slot allowing the positioning of the wire (2) during the launching operation. Inside this tube (10) is arranged, coaxially, a cylindrical guide surface (9) based on any suitable material, such as in particular ceramic, or stainless steel having received a surface treatment such as for example a plasma treatment.
  • such an assembly (6) has a length of 300 millimeters, a diameter for the outer tube (10) of 25 millimeters, and a diameter for the cylindrical guide surface (9) of 15 millimeters.
  • Additional guide means (11,12) for the wire (2) are preferably provided upstream and downstream of the cooling assembly (6) and allow the wire (2) to follow a path in the form of propeller against the surface (9).
  • a path in the form of a helix is obtained by using as guide means (11,12) two "pins" disposed at each end of the assembly (6), and which are offset angularly one in relation to the other.
  • a slot is provided to facilitate threading of the wire.
  • the outlet of the assembly (6) there opens a conduit (13) connected to a source of compressed air, making it possible to breathe into the space between the core (9) and the outer casing (10), a current of air flowing in a direction opposite to that of the advance of the wire (2) and producing a venturi effect inside said assembly.
  • the air pressure blown inside the cooling assembly is generally low and of the order of one (1) bar, the flow rate being significant taking into account the fact that there is an additional call.
  • the air flow can be regulated by any appropriate means and depends on the nature of the wire, temperature and its speed.
  • the air supply can be carried out either individually for each position of the machine, or by means of a common supply for all positions.
  • the air cools the thread in the opposite direction and therefore breaks the hot air sheath which surrounds it, the cooling being moreover accentuated by contact with the guide surface.
  • wire which, in summary, provides cooling combining both an extraction of calories by convection and conduction.
  • the guide surface (9) against which the wire rests during its passage inside the cooling assembly not only promotes its cooling, but also eliminates any risk of disturbances or faults created by the air flowing inside the cooling assembly.
  • the outer split tube not only allows air to be channeled, but also causes a venturi effect resulting in a large natural flow, making it possible to remove the hot air sheath which accompanies the wire.
  • the treatment organs are arranged horizontally, but it could be envisaged to arrange them vertically or by using any angle relative to the vertical.

Landscapes

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

Abstract

Method making it possible to cool a moving yarn (2) at the exit of an oven (5), before it passes into a treatment member, such as a false-twist spindle (7), involves causing the said yarn to pass inside a tube (10), through which a stream of fresh air or another gaseous product flows, the said airstream being directed in a direction opposite to the direction of passage of the yarn. It is characterised in that, during this cooling phase, the yarn is kept in contact with a bearing or guiding surface arranged coaxially on the inside of the tube (10), through which passes the airstream which flows into the space located between the outer tube (10) and the said guiding surface. <IMAGE>

Description

La présente invention a trait à un procédé pour le traitement d'un fil en mouvement, et plus particulièrement un procédé de refroidissement du fil après passage dans un four lors d'une opération de texturation, notamment par fausse torsion.The present invention relates to a method for treating a moving wire, and more particularly a method of cooling the wire after passing through an oven during a texturing operation, in particular by false twisting.

Elle concerne également une installation pour la mise en oeuvre de ce procédé.It also relates to an installation for the implementation of this process.

Dans la suite de la description, l'invention sera décrite appliquée à un procédé de texturation dit "par fausse torsion", procédé selon lequel on soumet le fil en mouvement à une torsion provisoire et à un traitement thermique à l'état tordu, le fil étant éventuellement soumis à un traitement de fixation.In the following description, the invention will be described applied to a texturing process known as "by false twist", a process according to which the moving wire is subjected to a provisional twist and to a heat treatment in the twisted state, the wire possibly being subjected to a fixing treatment.

Il est évident que cela ne limite pas la portée de l'invention et qu'il peut également être appliqué à tous les procédés dans lesquels on traite thermiquement un fil en mouvement, le fil devant être ensuite refroidi rapidement avant passage dans un organe de traitement situé en aval de l'organe de traitement thermique.It is obvious that this does not limit the scope of the invention and that it can also be applied to all the processes in which a moving wire is heat treated, the wire then having to be cooled rapidly before passing through a treatment member. located downstream of the heat treatment unit.

Par ailleurs, la présente invention s'applique à tous types de fils mono ou multifilamentaires, voire même un défilé de fibres.Furthermore, the present invention applies to all types of monofilament or multifilament yarns, even a procession of fibers.

La nécessité d'effectuer un refroidissement du fil dans une machine de fausse torsion entre la sortie du four et la broche, a été mise pratiquement en évidence dès le début du développement industriel de cette technologie, comme cela ressort notamment du brevet français no. 1 076 599.The need to cool the wire in a false-twist machine between the outlet of the oven and the spindle has been practically demonstrated from the start of the industrial development of this technology, as is apparent in particular from French patent no. 1,076,599.

Du fait de l'amélioration des performances des broches de fausse torsion et de l'augmentation des vitesses linéaires des fils, qui, actuellement, dépassent fréquemment les mille mètres par minute (1000 m/min), il a été nécessaire non seulement d'augmenter la longueur des fours pour que le fil reçoive la quantité de calories suffisantes pour son traitement thermique, mais également soit d'allonger de manière pratiquement proportionnelle la longueur du trajet de refroidissement lorsque ce dernier se fait à l'air libre, soit de prévoir des moyens permettant de réaliser un refroidissement accéléré du fil entre la sortie du four et son passage dans la broche de fausse torsion.Due to the improved performance of the false twist pins and the increase in the linear velocities of the wires, which currently frequently exceed one thousand meters per minute (1000 m / min), it has been necessary not only to increase the length of the ovens so that the wire receives the quantity of calories sufficient for its heat treatment, but also either to lengthen in a practically proportional way the length of the cooling path when the latter is done in the open air, or to provide means for achieving accelerated cooling of the wire between the outlet of the oven and its passage through the spindle of false twist.

Parmi les différentes solutions envisagées, pour réaliser un tel refroidissement accéléré, il a été proposé de mettre le fil en contact avec une surface refroidie, voire même de le mouiller, ainsi que de le soumettre à l'action d'un jet d'air refroidi. Cette dernière solution, refroidissement par jet d'air, ressort notamment du brevet français no. 1 168 540 (correspondant à l'USP 3 058 291).Among the various solutions envisaged, in order to achieve such accelerated cooling, it has been proposed to put the wire in contact with a cooled surface, or even to wet it, as well as to subject it to the action of an air jet. cooled. This latter solution, cooling by air jet, appears in particular from French patent no. 1,168,540 (corresponding to USP 3,058,291).

Cette dernière technique de refroidissement par "courant d'air froid" qui, d'une manière générale, consiste à faire passer le fil à l'intérieur d'un tube traversé par un courant d'air frais ou autre produit gazeux, ce courant étant dirigé en sens opposé au sens du passage du fil, si elle permet un refroidissement accéléré, n'a cependant jamais été utilisée industriellement, du moins à la connaissance du Demandeur, ce qui peut s'expliquer par le fait qu'il est difficile de contrôler les conditions de traitement qui peuvent varier d'une position à une autre, compte tenu que le courant d'air peut perturber le déplacement des fils.This last cooling technique by "cold air stream" which, in general, consists in passing the wire inside a tube crossed by a stream of fresh air or other gaseous product, this stream being directed in the opposite direction to the direction of passage of the wire, if it allows accelerated cooling, has never been used industrially, at least to the knowledge of the Applicant, which can be explained by the fact that it is difficult to control the treatment conditions which can vary from one position to another, taking into account that the air current can disturb the movement of the wires.

Or on a trouvé, et c'est ce qui fait l'objet de la présente invention, un procédé simple, efficace et économique, qui surmonte les inconvénients des procédés antérieurs, permet de refroidir rapidement un fil se déplaçant à grande vitesse, notamment lors d'une opération de texturation telle que par fausse torsion.However, we have found, and this is what is the subject of the present invention, a simple, effective and economical method, which overcomes the drawbacks of the previous methods, makes it possible to rapidly cool a wire moving at high speed, especially during of a texturing operation such as by false twist.

D'une manière générale, le procédé selon l'invention permettant de refroidir un fil en mouvement à la sortie d'un four avant passage dans un organe de traitement tel qu'une broche de fausse torsion, consiste à faire passer ledit fil à l'intérieur d'un tube traversé par un courant d'air frais ou autre produit gazeux, ledit courant d'air étant dirigé dans une direction opposée au sens de passage du fil, et il se caractérise en ce que lors de cette phase de refroidissement, le fil est maintenu en contact avec une surface d'appui ou de guidage disposée coaxialement à l'intérieur du tube traversé par le courant d'air qui s'écoule le long de ladite surface de guidage.In general, the method according to the invention making it possible to cool a wire in motion at the outlet of an oven before passing through a processing member such as a false twist pin, consists in passing said wire through the inside a tube traversed by a stream of fresh air or other gaseous product, said stream of air being directed in a direction opposite to the direction of passage of the wire, and it is characterized in that during this cooling phase , the wire is kept in contact with a bearing or guiding surface arranged coaxially inside the tube through which the air stream which flows along said guiding surface passes.

Selon une forme préférentielle de mise en oeuvre du procédé conforme à l'invention, le tube extérieur est de section cylindrique et la surface de guidage coaxiale est elle-même constituée par un élément cylindrique, le courant d'air s'écoulant le long de ladite surface dans l'espace compris entre ledit tube. Comme matériau permettant de réaliser la surface de guidage, on utilisera tout matériau présentant des caractéristiques mécaniques telles qu'il résiste à l'abrasion, sans altérer les propriétés du fil, tel que par exemple de la céramique. Il est cependant avantageux d'utiliser un matériau qui présente également, en plus des caractéristiques précitées, celle d'être également bon conducteur thermique, ce qui permet encore d'améliorer le processus de refroidissement ; un tel matériau peut par exemple être constitué par de l'acier inoxydable ayant reçu un traitement de surface (plasma...).According to a preferred embodiment of the method according to the invention, the outer tube is of cylindrical section and the coaxial guide surface is itself constituted by a cylindrical element, the air stream flowing along said surface in the space between said tube. As the material making it possible to produce the guide surface, any material having mechanical characteristics such that it resists abrasion will be used, without altering the properties of the wire, such as for example ceramic. It is however advantageous to use a material which also has, in addition to the above characteristics, that of also being a good thermal conductor, which further improves the cooling process; such a material can for example consist of stainless steel having received a surface treatment (plasma, etc.).

Enfin, toujours selon une forme préférentielle de mise en oeuvre du procédé conforme à l'invention, le passage du fil contre la surface de guidage est réalisé de telle sorte qu'il forme une hélice autour de cette dernière ; avantageusement, le fil entoure ladite surface de guidage sur 180° entre son entrée et sa sortie de la zone de refroidissement. Bien entendu, il peut être envisager de former une hélice présentant un angle entre l'entrée ou la sortie différent de 180° sans sortir du cadre de l'invention. Dans cette forme de réalisation, le guidage du fil est avantageusement obtenu en réalisant la liaison entre la surface de guidage et le tube externe par l'intermédiaire de "pions" disposés aux extrémités de l'ensemble et décalés angulairement l'un par rapport à l'autre. Dans cette forme de réalisation, le tube externe présente également une fente longitudinale facilitant l'introduction du fil ; une telle forme de réalisation permet d'obtenir automatiquement un positionnement de l'hélice contre la surface disposée à l'intérieur du tube externe.Finally, still according to a preferred form of implementation of the method according to the invention, the passage of the wire against the guide surface is carried out so that it forms a helix around the latter; advantageously, the wire surrounds said guide surface over 180 ° between its entry and its exit from the cooling zone. Of course, it can be envisaged to form a helix having an angle between the inlet or the outlet different from 180 ° without departing from the scope of the invention. In this embodiment, the guide of the wire is advantageously obtained by making the connection between the guide surface and the outer tube by means of "pins" arranged at the ends of the assembly and offset angularly one with respect to the other. In this embodiment, the outer tube also has a longitudinal slot facilitating the introduction of the wire; such an embodiment makes it possible to automatically obtain a positioning of the propeller against the surface disposed inside the outer tube.

L'invention concerne également une installation mettant en oeuvre un tel procédé.The invention also relates to an installation implementing such a method.

Cette installation comporte, pour chacune des positions de traitement :

  • des moyens de stockage d'un support d'alimentation en fil ;
  • des moyens délivreurs de fil ;
  • des moyens de traitement thermique ;
  • des moyens de refroidissement ;
  • un organe de traitement tel qu'une broche de fausse torsion permettant de communiquer une torsion provisoire au fil ;
  • des moyens d'appel et de renvidage du fil traité, précédés éventuellement d'une deuxième série de moyens de traitement thermique.
This installation includes, for each of the treatment positions:
  • means for storing a wire supply support;
  • wire delivering means;
  • heat treatment means;
  • cooling means;
  • a processing member such as a false twist pin for communicating a temporary twist to the wire;
  • means for calling and winding the treated wire, optionally preceded by a second series of heat treatment means.

Cette installation se caractérise en ce que les moyens de refroidissement sont constitués par un ensemble comprenant un tube traversé par un courant d'air frais ou autre produit gazeux, dirigé en sens opposé au sens de passage du fil et à l'intérieur duquel est disposée, coaxialement, une surface d'appui pour ledit fil.This installation is characterized in that the cooling means consist of an assembly comprising a tube traversed by a stream of fresh air or other gaseous product, directed in the opposite direction to the direction of passage of the wire and inside which is disposed. , coaxially, a bearing surface for said wire.

Selon un mode préférentiel de réalisation conforme à l'invention, ladite surface de guidage ou d'appui se présente sous la forme d'un bloc rectiligne, de section transversale cylindrique, et à l'extérieur duquel vient s'appuyer le fil lors de son déplacement. De préférence, le trajet du fil contre la surface de guidage, est réalisé en formant une hélice entre l'entrée et la sortie de l'ensemble de refroidissement ; dans cette forme de réalisation, le guidage du fil en forme d'hélice est obtenu en prévoyant, au moins une entrée et une sortie de l'ensemble de refroidissement des "pions" reliant la surface cylindrique interne à la surface externe, et qui sont décalés angulairement l'un par rapport à l'autre, de tels éléments permettant non seulement d'assurer le positionnement automatique du fil à l'intérieur de l'ensemble de refroidissement, mais également la liaison entre l'enveloppe externe et le noyau (surface de guidage) interne.According to a preferred embodiment in accordance with the invention, said guide or support surface is in the form of a rectilinear block, of cylindrical cross section, and outside of which comes to bear the wire during its displacement. Preferably, the path of the wire against the guide surface is produced by forming a helix between the inlet and the outlet of the cooling assembly; in this embodiment, the guiding of the helical wire is obtained by providing, at least one inlet and one outlet for the cooling assembly of the "pins" connecting the internal cylindrical surface to the external surface, and which are angularly offset with respect to each other, such elements making it possible not only to ensure the automatic positioning of the wire inside the cooling assembly, but also the connection between the external envelope and the core ( guide surface) internal.

Un tel ensemble de refroidissement est aligné avec la sortie du four et la broche de fausse torsion, et peut être disposé selon n'importe quelle position, soit horizontalement ou légèrement inclinée vers le bas dans le sens de déplacement du fil, soit verticalement ou faisant un angle quelconque par rapport à la verticale.Such a cooling assembly is aligned with the outlet of the oven and the false twist spindle, and can be arranged in any position, either horizontally or slightly inclined downward in the direction of movement of the wire, either vertically or making any angle to the vertical.

Avantageusement et en pratique, pour une machine de texturation par fausse torsion permettant de traiter des fils synthétiques (polyamide, polyester ..) à une vitesse de production de mille mètres par minute (1000 m/min) ou plus, et qui, pour un refroidissement naturel du fil à l'air libre, nécessite une distance entre la sortie du four et l'entrée de la broche de fausse torsion de l'ordre de 1,5 mètre, il est possible de réaliser le refroidissement dudit fil conformément à l'invention en utilisant un ensemble ayant une longueur inférieure à un mètre, comportant un tube externe de 25 millimètres de diamètre et, disposé concentriquement, un noyau cylindrique en céramique de 15 millimètres avec une injection d'air, à contre sens du défilement du fil, réalisée à la sortie du dispositif de refroidissement sous une pression comprise entre un et deux bars.Advantageously and in practice, for a false twist texturing machine making it possible to process synthetic yarns (polyamide, polyester, etc.) at a production speed of one thousand meters per minute (1000 m / min) or more, and which, for a natural cooling of the wire in the open air, requires a distance between the outlet of the oven and the inlet of the false twist spindle of the order of 1.5 meters, it is possible to cool the said wire in accordance with the invention using an assembly having a length of less than one meter, comprising an outer tube of 25 millimeters in diameter and, concentrically disposed, a cylindrical ceramic core of 15 millimeters with an injection of air, against the direction of travel of the wire , produced at the outlet of the cooling device under a pressure of between one and two bars.

L'invention et les avantages qu'elle apporte seront cependant mieux compris grâce à l'exemple de réalisation décrit ci-après à titre indicatif mais non limitatif, et qui est illustré par les schémas annexés dans lesquels :

  • la figure 1 illustre l'ensemble d'une installation de texturation par fausse torsion mettant en oeuvre le procédé conforme à l'invention ;
  • la figure 2 est une vue partielle, agrandie, montrant en détail la zone de refroidissement réalisée conformément à l'invention dans une machine de fausse torsion ;
  • la figure 3 est une vue de détail, en perspective éclatée, d'un mode de réalisation préférentiel d'un ensemble de refroidissement réalisé conformément à l'invention et monté sur une telle installation.
The invention and the advantages which it brings will however be better understood thanks to the embodiment described below by way of indication but not limitation, and which is illustrated by the attached diagrams in which:
  • Figure 1 illustrates the assembly of a false twist texturing installation implementing the method according to the invention;
  • Figure 2 is an enlarged partial view showing in detail the cooling zone produced in accordance with the invention in a false twist machine;
  • Figure 3 is a detail view, in exploded perspective, of a preferred embodiment of a cooling assembly produced according to the invention and mounted on such an installation.

Si l'on se reporte aux figures 1 et 2, dans une machine de texturation de fils par fausse torsion mettant en oeuvre le procédé de refroidissement du fil conforme à l'invention, chaque position de travail comprend, disposé entre une zone d'alimentation (1) du fil (2) à traiter et une zone de réception (3) après traitement, un ensemble de transformation dudit fil (2) composé d'éléments disposés dans le prolongement les uns des autres, et accessible par l'opérateur, et qui comporte :

  • un premier appel (4) du fil (2) ;
  • un dispositif de chauffage (5) de tout type connu (four ouvert ou fermé) ;
  • un système de refroidissement, désigné par la référence générale (6), réalisé conformément à l'invention, et dont la structure et le fonctionnement sera vu plus en détail dans la suite de la description ;
  • une broche de fausse torsion (7) constituée par une broche à disques ou à courroies croisées conventionnelle ;
  • un système d'appel conventionnel (8) disposé en aval de la broche (7) et des moyens de renvidage (3).
Referring to FIGS. 1 and 2, in a false twist yarn texturing machine implementing the yarn cooling method according to the invention, each working position comprises, disposed between a feeding zone (1) of the wire (2) to be treated and a reception area (3) after treatment, a processing assembly of said wire (2) composed of elements arranged in the extension of each other, and accessible by the operator, and which includes:
  • a first call (4) of the wire (2);
  • a heating device (5) of any known type (open or closed oven);
  • a cooling system, designated by the general reference (6), produced in accordance with the invention, the structure and operation of which will be seen in more detail in the following description;
  • a false twist spindle (7) consisting of a disc spindle or conventional crossed belts;
  • a conventional call system (8) arranged downstream of the spindle (7) and winding means (3).

Eventuellement, un second four de fixation peut être prévu entre le dernier appel (8) et le système de renvidage (3).Optionally, a second fixing oven can be provided between the last call (8) and the winding system (3).

Ainsi que cela est montré plus en détail à la figure 3, la zone de refroidissement réalisée conformément à l'invention, est constituée essentiellement par un ensemble (6) disposé dans le prolongement et la proximité de la sortie du four (5), et de préférence alignée avec la broche de fausse torsion (7) pour obtenir un trajet sensiblement rectiligne du fil. Cet ensemble de refroidissement est constitué par un tube (10), de préférence de section cylindrique, et qui comporte une fente permettant la mise en place du fil (2) lors de l'opération de lancement. A l'intérieur de ce tube (10), est disposée, coaxialement, une surface de guidage cylindrique (9) à base de tout matériau approprié, tel que notamment céramique, ou acier inoxydable ayant reçu un traitement de surface tel que par exemple un traitement plasma.As shown in more detail in FIG. 3, the cooling zone produced in accordance with the invention consists essentially of an assembly (6) arranged in the extension and near the outlet of the oven (5), and preferably aligned with the false twist pin (7) to obtain a substantially straight path of the wire. This cooling assembly is constituted by a tube (10), preferably of cylindrical section, and which has a slot allowing the positioning of the wire (2) during the launching operation. Inside this tube (10) is arranged, coaxially, a cylindrical guide surface (9) based on any suitable material, such as in particular ceramic, or stainless steel having received a surface treatment such as for example a plasma treatment.

A titre indicatif, pour une machine de texturation fonctionnant à une vitesse de mille mètres par minute (1000 m/min) ou plus, un tel ensemble (6) a une longueur de 300 millimètres, un diamètre pour le tube externe (10) de 25 millimètres, et un diamètre pour la surface de guidage cylindrique (9) de 15 millimètres. Des moyens de guidage additionnels (11,12) pour le fil (2) sont de préférence prévus en amont et en aval de l'ensemble de refroidissement (6) et permettent de faire suivre au fil (2) un trajet en forme d'hélice contre la surface (9). Dans la forme de réalisation préférentielle illustrée, un tel trajet sous forme d'hélice est obtenu en utilisant comme moyens de guidage (11,12) deux "pions" disposés à chacune des extrémités de l'ensemble (6), et qui sont décalés angulairement l'un par rapport à l'autre. Par ailleurs, une fente est prévue pour faciliter l'enfilage du fil. De cette manière, on obtient, lors de la mise en route de la machine, un positionnement automatique du fil en hélice autour de la surface (9), les pions (11,12) jouant leur rôle d'éléments de liaison et de centrage de la surface de guidage cylindrique (9) par rapport au tube externe (10).As an indication, for a texturing machine operating at a speed of a thousand meters per minute (1000 m / min) or more, such an assembly (6) has a length of 300 millimeters, a diameter for the outer tube (10) of 25 millimeters, and a diameter for the cylindrical guide surface (9) of 15 millimeters. Additional guide means (11,12) for the wire (2) are preferably provided upstream and downstream of the cooling assembly (6) and allow the wire (2) to follow a path in the form of propeller against the surface (9). In the preferred embodiment illustrated, such a path in the form of a helix is obtained by using as guide means (11,12) two "pins" disposed at each end of the assembly (6), and which are offset angularly one in relation to the other. Furthermore, a slot is provided to facilitate threading of the wire. In this way, one obtains, when starting the machine, an automatic positioning of the helical wire around the surface (9), the pins (11,12) playing their role of connecting and centering elements. of the cylindrical guide surface (9) relative to the outer tube (10).

Conformément à l'invention, à la sortie de l'ensemble (6), débouche un conduit (13) relié à une source d'air comprimé, permettant d'insuffler dans l'espace compris entre le noyau (9) et l'enveloppe externe (10), un courant d'air s'écoulant dans une direction inverse à celle de l'avance du fil (2) et produisant un effet venturi à l'intérieur dudit ensemble. La pression d'air insufflé à l'intérieur de l'ensemble de refroidissement, est en général faible et de l'ordre d'un (1) bar, le débit étant important compte tenu du fait qu'il se produit un appel additionnel d'air depuis la sortie en direction de l'entrée de l'enveloppe (10). Le débit d'air peut être régulé par tout moyen approprié et est fonction de la nature du fil, de sa température et de sa vitesse. L'alimentation en air peut être réalisée soit de manière individuelle pour chaque position de la machine, soit au moyen d'une alimentation commune pour l'ensemble des positions.According to the invention, at the outlet of the assembly (6), there opens a conduit (13) connected to a source of compressed air, making it possible to breathe into the space between the core (9) and the outer casing (10), a current of air flowing in a direction opposite to that of the advance of the wire (2) and producing a venturi effect inside said assembly. The air pressure blown inside the cooling assembly is generally low and of the order of one (1) bar, the flow rate being significant taking into account the fact that there is an additional call. air from the outlet towards the inlet of the envelope (10). The air flow can be regulated by any appropriate means and depends on the nature of the wire, temperature and its speed. The air supply can be carried out either individually for each position of the machine, or by means of a common supply for all positions.

Grâce à une telle manière de procéder, il est possible de refroidir parfaitement le fil, sans altérer ses propriétés textiles, et ce en ayant un encombrement minimal. Ceci s'explique par le fait que conformément à l'invention, l'air refroidit le fil à contresens et brise donc la gaine d'air chaud qui l'entoure, le refroidissement étant par ailleurs accentué par le contact avec la surface de guidage du fil ce qui, en résumé, permet d'obtenir un refroidissement combinant à la fois une extraction des calories par convexion et conduction. De plus, la surface de guidage (9) contre laquelle le fil s'appuie lors de son passage à l'intérieur de l'ensemble de refroidissement, permet non seulement de favoriser son refroidissement, mais également élimine tous risques de perturbations ou défauts créés par l'air s'écoulant à l'intérieur de l'ensemble de refroidissement. Il convient également de noter que le tube fendu extérieur permet non seulement de canaliser l'air, mais provoque un effet venturi entraînant un gros débit naturel, permettant d'enlever la gaine d'air chaud qui accompagne le fil.Thanks to such a procedure, it is possible to cool the yarn perfectly, without altering its textile properties, and this while having a minimum bulk. This is explained by the fact that, according to the invention, the air cools the thread in the opposite direction and therefore breaks the hot air sheath which surrounds it, the cooling being moreover accentuated by contact with the guide surface. wire which, in summary, provides cooling combining both an extraction of calories by convection and conduction. In addition, the guide surface (9) against which the wire rests during its passage inside the cooling assembly, not only promotes its cooling, but also eliminates any risk of disturbances or faults created by the air flowing inside the cooling assembly. It should also be noted that the outer split tube not only allows air to be channeled, but also causes a venturi effect resulting in a large natural flow, making it possible to remove the hot air sheath which accompanies the wire.

Grâce à une telle solution, il est possible de réaliser des machines très compactes, dont tous les organes sont facilement accessibles par un opérateur tel que cela est représenté à la figure 1. Dans l'exemple illustré par cette figure 1, les organes de traitement (four, ensemble de refroidissement, broche) sont disposés horizontalement, mais il pourrait être envisagé de les disposer verticalement ou en faisant appel à un angle quelconque par rapport à la verticale.Thanks to such a solution, it is possible to produce very compact machines, all of the organs of which are easily accessible by an operator as shown in FIG. 1. In the example illustrated by this FIG. 1, the treatment organs (oven, cooling unit, spit) are arranged horizontally, but it could be envisaged to arrange them vertically or by using any angle relative to the vertical.

Claims (8)

1/ Procédé permettant de refroidir un fil (2) en mouvement à la sortie d'un four (5) avant passage dans un organe de traitement tel qu'une broche de fausse torsion (7), consistant à faire passer ledit fil à l'intérieur d'un tube (10) traversé par un courant d'air frais ou autre produit gazeux, ledit courant d'air étant dirigé dans une direction opposée au sens de passage du fil, caractérisé en ce que lors de cette phase de refroidissement, le fil est maintenu en contact avec une surface d'appui ou de guidage (9) disposée coaxialement à l'intérieur du tube (10) traversé par le courant d'air qui s'écoule dans l'espace compris entre le tube externe (10) et ladite surface de guidage. 1 / A method for cooling a wire (2) in motion at the outlet of an oven (5) before passing through a processing member such as a false twist spindle (7), consisting in passing said wire through the interior of a tube (10) traversed by a stream of fresh air or other gaseous product, said stream of air being directed in a direction opposite to the direction of passage of the wire, characterized in that during this cooling phase , the wire is kept in contact with a bearing or guide surface (9) arranged coaxially inside the tube (10) traversed by the air current which flows in the space between the external tube (10) and said guide surface. 2/ Procédé selon la revendication 1, caractérisé en ce que le tube extérieur (10) traversé par le courant d'air est de section cylindrique et la surface de guidage coaxiale (9) est également constituée par un élément cylindrique à base d'une matière lisse, dure. 2 / A method according to claim 1, characterized in that the outer tube (10) through which the air stream passes is of cylindrical section and the coaxial guide surface (9) is also constituted by a cylindrical element based on a smooth, hard material. 3/ Procédé selon la revendication 2, caractérisé en ce que la surface de guidage coaxiale est à base de céramique. 3 / A method according to claim 2, characterized in that the coaxial guide surface is based on ceramic. 4/ Procédé selon la revendicaton 3, caractérisé en ce que la surface de guidage (9) est à base d'acier inoxydable ayant reçu un traitement de surface. 4 / Method according to claim 3, characterized in that the guide surface (9) is based on stainless steel having received a surface treatment. 5/ Installation pour la mise en oeuvre du procédé selon l'une des revendications 1 à 4. 5 / Installation for implementing the method according to one of claims 1 to 4. 6/ Installation selon la revendication 5, qui comporte, pour chacune des positions de traitement : - des moyens de stockage d'un support (1) d'alimentation en fil (2) ; - des moyens délivreurs de fil (4) ; - des moyens de traitement thermique (5) ; - des moyens de refroidissement (6) ; - un organe de traitement tel qu'une broche de fausse torsion (7) permettant de communiquer une torsion provisoire au fil ; - des moyens d'appel (8) et de renvidage (3) du fil traité, précédés éventuellement d'une deuxième série de moyens de traitement thermique, caractérisée en ce que les moyens de refroidissement (6) sont constitués par un ensemble comprenant un tube (10) traversé par un courant d'air frais ou autre produit gazeux, dirigé en sens opposé au sens de passage du fil (2) et à l'intérieur duquel est disposée, coaxialement, une surface de guidage ou d'appui (9) pour ledit fil. 6 / Installation according to claim 5, which comprises, for each of the treatment positions: - Means for storing a support (1) for supplying wire (2); - wire delivery means (4); - heat treatment means (5); - cooling means (6); - a processing member such as a false twist pin (7) for communicating a temporary twist to the wire; means for calling (8) and winding up (3) the treated wire, optionally preceded by a second series of heat treatment means, characterized in that the cooling means (6) consist of an assembly comprising a tube (10) traversed by a stream of fresh air or other gaseous product, directed in the opposite direction to the direction of passage of the wire (2) and to the interior of which is disposed, coaxially, a guide or support surface (9) for said wire. 7/ Installation selon la revendication 6, caractérisée en ce que le tube (10) comporte une fente le long de l'une de ses génératrices, le guidage en hélice le long de la surface (9) étant obtenu au moyen de deux "pions" (11,12), décalés angulairement l'un par rapport à l'autre, disposés à chaque extrémité de l'ensemble et reliant la surface de guidage ou d'appui (9) au tube externe (10). 7 / installation according to claim 6, characterized in that the tube (10) has a slot along one of its generatrices, the helical guidance along the surface (9) being obtained by means of two "pins "(11,12), angularly offset with respect to each other, arranged at each end of the assembly and connecting the guide or support surface (9) to the external tube (10). 8/ Installation selon la revendication 7, caractérisée en ce que ladite surface de guidage ou d'appui (9) se présente sous la forme d'un bloc rectiligne, de section transversale cylindrique, et à l'extérieur duquel vient s'appuyer le fil (2) lors de son déplacement, le trajet du fil étant réalisé en formant une hélice le long de cette surface. 8 / Installation according to claim 7, characterized in that said guide or support surface (9) is in the form of a rectilinear block, of cylindrical cross section, and outside of which comes to bear the wire (2) during its movement, the path of the wire being produced by forming a helix along this surface.
EP93420129A 1992-04-29 1993-03-23 Method for the processing of chemical yarns notably during a texturing process and the textile machine for carrying out this method Expired - Lifetime EP0568467B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR9205541 1992-04-29
FR929205541A FR2690694B1 (en) 1992-04-29 1992-04-29 PROCESS FOR THE TREATMENT OF CHEMICAL THREADS, PARTICULARLY DURING A TEXTURING OPERATION, AND TEXTILE INSTALLATION IMPLEMENTING THIS PROCESS.

Publications (2)

Publication Number Publication Date
EP0568467A1 true EP0568467A1 (en) 1993-11-03
EP0568467B1 EP0568467B1 (en) 1997-06-11

Family

ID=9429556

Family Applications (1)

Application Number Title Priority Date Filing Date
EP93420129A Expired - Lifetime EP0568467B1 (en) 1992-04-29 1993-03-23 Method for the processing of chemical yarns notably during a texturing process and the textile machine for carrying out this method

Country Status (6)

Country Link
US (1) US5359845A (en)
EP (1) EP0568467B1 (en)
JP (1) JP3257857B2 (en)
CN (1) CN1032377C (en)
DE (1) DE69311436T2 (en)
FR (1) FR2690694B1 (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2736937A1 (en) * 1995-07-19 1997-01-24 Icbt Roanne Yarn drawing and false twisting appts - has an initial take up assembly with a heated roller and deflection roller for a yarn half turn
US5671519A (en) * 1995-05-23 1997-09-30 Rieter Scragg Limited Yarn texturing machine with cooling arrangement for heated false-twisted yarn
EP2982785A1 (en) * 2014-08-06 2016-02-10 Karl Mayer Textilmaschinenfabrik GmbH Device and method for straightening filaments

Families Citing this family (18)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2571180B2 (en) * 1992-12-08 1997-01-16 東洋電機株式会社 Heating device for false twisting
DE69510955T2 (en) * 1994-11-22 1999-12-09 Icbt Yarn Roanne METHOD FOR STRETCH TEXTURING BY FALSE THREADS AND OVEN FOR APPLYING THIS METHOD
TW317579B (en) * 1995-04-11 1997-10-11 Barmag Barmer Maschf
JP3490844B2 (en) * 1996-05-30 2004-01-26 東レエンジニアリング株式会社 Cooling device for false twisting machine
GB9700436D0 (en) * 1997-01-10 1997-02-26 Rieter Scragg Ltd Texturing yarn
EP0879907B1 (en) * 1997-05-24 2003-04-09 B a r m a g AG Texturing machine
DE19831734A1 (en) * 1998-07-15 2000-01-20 Bayer Ag ABS-type thermoplastic molding composition is prepared using a combination of an azo compound and a persulfate compound
US6197628B1 (en) 1998-08-27 2001-03-06 Micron Technology, Inc. Ruthenium silicide diffusion barrier layers and methods of forming same
JP4503895B2 (en) * 1999-05-27 2010-07-14 バルマーク アクチエンゲゼルシヤフト Textile machinery
DE102006040065A1 (en) * 2006-08-26 2008-02-28 Oerlikon Textile Gmbh & Co. Kg Procedure for thermal treatment of a running yarn at a twisting machine with workplaces, comprises passing the yarn by a delivery mechanisms to a device for the thermal treatment of the yarn in tension free manner and spooling the yarn
JP5133909B2 (en) * 2009-01-06 2013-01-30 Ｔｍｔマシナリー株式会社 Yarn cooling device, textile machine, and yarn cooling method
JP2012051730A (en) 2010-08-06 2012-03-15 Ishida Co Ltd Sorting device
EP2565135A1 (en) 2011-08-30 2013-03-06 Ishida Co., Ltd. Sorter
CN102517718A (en) * 2011-11-15 2012-06-27 海宁市建利纺织有限公司 False twisting machine for hairy curved yarns
CN103938327B (en) * 2014-03-27 2016-03-30 吴江明佳织造有限公司 Double branch pipe wrapped yarn is for yarn tracheae
JP6861807B2 (en) * 2016-10-08 2021-04-21 エーリコン テクスティル ゲゼルシャフト ミット ベシュレンクテル ハフツング ウント コンパニー コマンディートゲゼルシャフトＯｅｒｌｉｋｏｎ Ｔｅｘｔｉｌｅ ＧｍｂＨ ＆ Ｃｏ． ＫＧ A device for cooling the heated yarn
DE102017003189A1 (en) * 2017-04-01 2018-10-04 Oerlikon Textile Gmbh & Co. Kg Melt spinning apparatus
CN109252266B (en) * 2018-10-26 2023-09-12 浙江恒远化纤集团有限公司 Cooling device of elasticizer

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3153892A (en) * 1961-12-22 1964-10-27 Billion & Cie Twisting machines executing a false twist
GB2019456A (en) * 1978-04-19 1979-10-31 Rieter Ag Maschf Cooling threads

Family Cites Families (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1076599A (en) * 1952-05-23 1954-10-27 Method and apparatus for making yarns and crimped fibers
US3058291A (en) * 1956-02-15 1962-10-16 Heberlein Patent Corp Permanently crimped synthetic textile products and method for producing the same
FR1168540A (en) * 1956-02-15 1958-12-09 Heberlein & Co Ag Process and device for the manufacture of permanently crimped textile yarns and yarn conforming to that thus obtained
CH445714A (en) * 1966-02-03 1967-10-31 Heberlein & Co Ag Suction device for a device for texturing textile yarns consisting at least partially of thermoplastic material
US3696601A (en) * 1968-08-12 1972-10-10 Henry W Mccard Textile heating and cooling
GB1287575A (en) * 1969-12-04 1972-08-31 Teijin Seiki Co Ltd A yarn heater
DE2248808A1 (en) * 1971-10-29 1973-05-03 Heberlein & Co Ag DEVICE FOR FALSE TWIST TEXTURING AND RE-FIXING OF YARNS MADE OF THERMOPLASTIC SYNTHETIC MATERIAL IN CONTINUOUS WORKING METHOD
GB1537543A (en) * 1976-03-23 1978-12-29 Scragg & Sons Yarn texturing machine
US4141206A (en) * 1976-03-23 1979-02-27 Ernest Scragg & Sons Limited Yarn texturing machine
FR2670807A1 (en) * 1990-12-21 1992-06-26 Icbt Roanne DEVICE FOR THE HEAT TREATMENT OF MOVING THREADS.

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3153892A (en) * 1961-12-22 1964-10-27 Billion & Cie Twisting machines executing a false twist
GB2019456A (en) * 1978-04-19 1979-10-31 Rieter Ag Maschf Cooling threads

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5671519A (en) * 1995-05-23 1997-09-30 Rieter Scragg Limited Yarn texturing machine with cooling arrangement for heated false-twisted yarn
FR2736937A1 (en) * 1995-07-19 1997-01-24 Icbt Roanne Yarn drawing and false twisting appts - has an initial take up assembly with a heated roller and deflection roller for a yarn half turn
EP2982785A1 (en) * 2014-08-06 2016-02-10 Karl Mayer Textilmaschinenfabrik GmbH Device and method for straightening filaments
US10029428B2 (en) 2014-08-06 2018-07-24 Karl Mayer Textilmaschinenfabrik Gmbh Apparatus and method for straightening filaments

Also Published As

Publication number Publication date
DE69311436T2 (en) 1997-10-23
FR2690694A1 (en) 1993-11-05
FR2690694B1 (en) 1994-06-17
DE69311436D1 (en) 1997-07-17
JPH0610230A (en) 1994-01-18
CN1032377C (en) 1996-07-24
CN1080967A (en) 1994-01-19
US5359845A (en) 1994-11-01
JP3257857B2 (en) 2002-02-18
EP0568467B1 (en) 1997-06-11

Similar Documents

Publication Publication Date Title
EP0568467B1 (en) Method for the processing of chemical yarns notably during a texturing process and the textile machine for carrying out this method
EP0085017B1 (en) Device for drawing, condensing and moving a sliver of fibres in a spinning process
EP0524111B1 (en) Apparatus for thermically treating moving yarns
FR2461040A1 (en) METHOD AND DEVICE FOR OBTAINING A THREAD HAVING ITS LENGTH OF ALTERNATIVELY REVERSE SENSE ZONES
CH635621A5 (en) MACHINE FOR TEXTURING YARNS BY FALSE TORSION.
FR2835261A1 (en) DEVICE FOR CONTINUOUS WIRING AND FIXING OF WIRES FOLLOWED BY ADDITIONAL HEAT TREATMENT
EP0815303B1 (en) Improved machine for continuously plying or twisting yarns with subsequent complementary heat treatment
FR2507634A1 (en) METHOD AND APPARATUS FOR WIRE THREAD WIRE
CH659488A5 (en) METHOD AND DEVICE FOR PRODUCING GUIPED YARNS.
EP0636720B1 (en) Apparatus for thermally treating moving yarns
FR2857985A1 (en) Textile yarn continuous twisting and fixing machine has one or more treatment posts incorporating twisting, thermofixing, cooling and winding operations
EP0070210B1 (en) Method and apparatus of manufacturing a doubled yarn
FR2884261A1 (en) PROCESS FOR TRANSFORMING AND PROCESSING TEXTILE YARN AND DEVICE THEREFOR
WO2003064740A1 (en) Device for cabling and continuous fixing of wires followed by complementary heat treatment
EP0802993A1 (en) Process for stretching-texturing by false torsion, and new type of oven for implementing such process
FR2736937A1 (en) Yarn drawing and false twisting appts - has an initial take up assembly with a heated roller and deflection roller for a yarn half turn
WO1999034040A1 (en) Multifilament textile yarns with hollow section, method for making same, and textile surfaces obtained from said yarns
EP0083897B1 (en) Method, device and plant for removing a fibre sliver after its wet-treatment
BE898409A (en) Device for inserting a weft thread into the crowd of a loom.
CH572113A5 (en) Spirally sheathed yarn of stable fibres without twist - core not fully covered, enclosed by uniformly spaced spirals(BR-23.12.75)
WO2005061767A2 (en) Device for heat treating a moving textile yarn
FR2566810A1 (en) IMPROVED FREE FIBER TYPE SPINNING PROCESS AND DEVICE
FR2736938A1 (en) Yarn draw texturising - comprises localising the distortion point at the yarn during drawing by false twisting
FR2490686A1 (en) False-twisting texturing machine - has straight yarn paths with easy access to treatment devices
WO2005007949A1 (en) Device for the continuous cabling and fixing of yarns, followed by a complementary heat treatment process

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): DE GB IT

17P Request for examination filed

Effective date: 19940112

17Q First examination report despatched

Effective date: 19950828

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

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): DE GB IT

REF Corresponds to:

Ref document number: 69311436

Country of ref document: DE

Date of ref document: 19970717

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

Effective date: 19970707

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

26N No opposition filed
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: DE

Payment date: 20040305

Year of fee payment: 12

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

Ref country code: GB

Payment date: 20040316

Year of fee payment: 12

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: 20050323

Ref country code: GB

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

Effective date: 20050323

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: 20051001

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

Effective date: 20050323