EP0493277A1 - Apparatus for the thermal treatment of moving yarns - Google Patents
Apparatus for the thermal treatment of moving yarns Download PDFInfo
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- EP0493277A1 EP0493277A1 EP91420456A EP91420456A EP0493277A1 EP 0493277 A1 EP0493277 A1 EP 0493277A1 EP 91420456 A EP91420456 A EP 91420456A EP 91420456 A EP91420456 A EP 91420456A EP 0493277 A1 EP0493277 A1 EP 0493277A1
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- Prior art keywords
- wire
- heating
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- channel
- block
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- 238000007669 thermal treatment Methods 0.000 title claims abstract 3
- 238000010438 heat treatment Methods 0.000 claims abstract description 35
- 230000005855 radiation Effects 0.000 claims abstract description 10
- 230000005540 biological transmission Effects 0.000 claims abstract description 6
- 238000011144 upstream manufacturing Methods 0.000 claims abstract description 4
- 239000000463 material Substances 0.000 claims description 7
- 239000000919 ceramic Substances 0.000 claims description 6
- 239000004020 conductor Substances 0.000 claims description 3
- 229910001220 stainless steel Inorganic materials 0.000 claims description 3
- 239000010935 stainless steel Substances 0.000 claims description 3
- 238000011282 treatment Methods 0.000 description 7
- 238000004519 manufacturing process Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 239000004753 textile Substances 0.000 description 2
- 235000010627 Phaseolus vulgaris Nutrition 0.000 description 1
- 244000046052 Phaseolus vulgaris Species 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000000835 fiber Substances 0.000 description 1
- 230000035939 shock Effects 0.000 description 1
Images
Classifications
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- 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
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- 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
Definitions
- the present invention relates to an improvement made to devices for the heat treatment of moving wires and in particular, the heat treatment of wires in order to give them certain shrinkage properties and / or bulkiness and / or elasticity.
- the new type of oven according to the invention for the heat treatment of a wire for example during a texturing stretching operation, is of the type constituted by an insulating enclosure which surrounds a heating block comprising a longitudinal channel inside which passes the wire to be treated, means for guiding said wire being provided upstream and downstream of the oven to ensure its positioning, and it is characterized in that said channel has a section such that on part of its length, the wire circulates inside the wall, its temperature rise being obtained by radiation in this area and that, in the remaining part of the oven, it comes into contact with said wall, the transmission of heat is then produced by contact (or conduction).
- the heating element proper is in the form of a cylindrical block, pierced along its length with a channel which is also cylindrical, the contact heating zone being obtained by arranging at inside said channel a profile, good conductor of heat, which bears against the internal surface of the conduit and which has a bearing surface for the wire arranged substantially along the axis of said conduit.
- the heating block is made of ceramic (or any other equivalent material), resistors being embedded in the wall.
- the profile serving as a bearing surface is, for its part, made of all materials which are good conductors of heat, such as stainless steel, ceramic or other materials.
- Such an oven can be either completely closed or have a longitudinal slot (so-called "open” oven).
- the length can be between 0.30 meter and 1.50 meter, the temperature between 300 and 1000 ° C.
- the length of contact heating will advantageously be between 25 and 75% of the total length of the oven.
- the passage of the wire can be either straight, or possibly curved, by adapting the shape of the profile.
- the heating element of the oven consists of an insulating enclosure (13), shown schematically in phantom in Figure 1 and a block (1) , ceramic (or other equivalent material), and which is pierced over its entire length with a circular section conduit (2) which can be either closed, or have a longitudinal slot as illustrated in Figure 1 attached.
- Guide elements (3,4) for the wire (5) are arranged upstream and downstream of the block.
- the heating elements are arranged in a known manner inside the wall of the block (1). These heating elements can either communicate a regular temperature over the entire length of the oven, or possibly allow zones to be brought to different temperatures.
- the internal section (2) of the axial duct is such that in a zone (A), the wire (5) is kept at a distance from the internal wall (6) of the duct (2), while in another zone (B), the wire (5) is heated by contact.
- the contact heating zone (B) is obtained, in the illustrated embodiment, by inserting a deep-drawn profile (7) inside the duct (2).
- a profile (7) for example made of stainless steel (or any other equivalent material such as ceramic), has a section such that it bears regularly against the internal wall of the duct (6) and that it has a surface (8) arranged substantially along the axis of travel of the wire (5).
- This bearing surface (8) can be either rectilinear or possibly be curved.
- the lower face (8) in contact with which the wire (5) is located can be flat, preferably it will be curved (the section of the stamped element having substantially the shape of a "bean"), which favors the positioning of the wire when it travels, in particular when the latter is produced at very high speed.
- Such an oven design is particularly suitable for making texturing machines, in particular by false twist, compact, as illustrated in FIG. 3.
- the oven according to the invention designated by the general reference (F) is arranged between a feeder (10) for the wire (5) and a cooling zone (11) followed by a false twist spindle (12).
- the oven (F) is, in such a case, designed as illustrated in FIGS. 1 and 2 so that in the entry zone (A), the wire is heated by radiation, while in the exit zone (B ), it is heated by conduction.
- such an oven (F) may have a length of between 0.3 and 1.5 meters, the temperature between 300 and 1000 ° C. and the diameter of the internal conduit (2) possibly being twelve millimeters.
Abstract
Description
La présente invention concerne un perfectionnement apporté aux dispositifs pour le traitement thermique de fils en mouvement et notamment, le traitement thermique de fils afin de leur conférer certaines propriétés de retrait et/ou voluminosité et/ou élasticité.The present invention relates to an improvement made to devices for the heat treatment of moving wires and in particular, the heat treatment of wires in order to give them certain shrinkage properties and / or bulkiness and / or elasticity.
Dans la suite de la description, on utilisera l'expression classique de "four" pour désigner un tel dispositif qui, bien entendu, peut être utilisé aussi bien pour traiter des fils continus mono ou multifilamentaires que des filés de fibres.In the following description, the conventional expression "oven" will be used to designate such a device which, of course, can be used both for treating continuous single or multifilament yarns as well as fiber yarns.
Dans tous les procédé de traitement de fils en mouvement exigeant un traitement thermique, le principal problème qui se pose est celui de la transmission calorifique rapide, la chaleur devant pénétrer régulièrement à coeur et de la même manière sur toute la longueur du fil. En effet, comme on le sait, la température du traitement et sa régularité ont une très grande influence sur les qualités du fil.In all methods of treating moving wires requiring heat treatment, the main problem which arises is that of rapid heat transmission, the heat having to penetrate regularly to the core and in the same way over the entire length of the wire. Indeed, as is known, the temperature of the treatment and its regularity have a very great influence on the qualities of the wire.
Il est bien connu que le traitement thermique varie en fonction de la matière traitée, du titre du fil et de sa vitesse de passage à l'intérieur du four. Ainsi, on conçoit aisément que l'on atteindra plus rapidement le coeur d'un fil fin que celui d'un titre important. De même, on sait que l'on ne peut pas traiter un fil au dessus d'une certaine température plafond, sous peine de le dégrader. Par suite, cette question d'échange thermique étant très importante dans le domaine textile, de très nombreuses solutions ont été envisagées pour le résoudre, ces solutions faisant appel aux trois grands principes d'échange thermique, à savoir la convexion, la radiation, la conduction.It is well known that the heat treatment varies according to the material treated, the title of the wire and its speed of passage inside the oven. Thus, it is easy to see that we will reach the heart of a fine wire more quickly than that of an important track. Likewise, we know that we cannot process a wire above a certain ceiling temperature, otherwise we will degrade it. Consequently, this question of heat exchange being very important in the textile field, numerous solutions have been envisaged to resolve it, these solutions calling upon the three main principles of heat exchange, namely convection, radiation, conduction.
Outre ce problème d'une bonne transmission calorifique, se pose également celui de maintenir le fil sous une tension déterminée, fonction du traitement qui est effectué. Ainsi, par exemple, dans le cas d'une opération d'étirage, éventuellement combinée à une opération de texturation, il est nécessaire que le fil soit maintenu sous une tension maximale alors qu'en revanche, lorsque l'on souhaite réaliser une rétraction du fil, la tension doit être réduite. Enfin, se pose également le problème de l'augmentation des vitesses de production sur une machine textile, qui est passée de quelques dizaines de mètres par minute il y a une trentaine d'années à mille mètres, voire même plus actuellement.In addition to this problem of good heat transmission, there is also that of maintaining the wire under a determined tension, depending on the treatment which is carried out. Thus, for example, in the case of a drawing operation, possibly combined with a texturing operation, it is necessary that the wire is kept under a maximum tension whereas, on the other hand, when it is desired to carry out a retraction of the wire, the tension must be reduced. Finally, there is also the problem of increasing production speeds on a textile machine, which went from a few tens of meters per minute about thirty years ago to a thousand meters, or even more currently.
Parmi les solutions proposées pour obtenir une très bonne régularité dans la transmission calorifique et également faciliter les problèmes de régulation de température de position en position sur une machine afin que l'ensemble de la production soit homogène, il a été envisagé depuis fort longtemps de réaliser des traitements thermiques que l'on pourrait qualifier de "séquentiels" en réalisant des fours sur la longueur duquel se succèdent plusieurs zones distinctes de traitement thermique. Parmi ces solutions, on peut citer celles faisant l'objet du brevet français 1 204 634, dans lequel on réalise, à l'intérieur d'un même four, deux traitement successifs, l'un pendant lequel le fil est soumis à une température considérablement supérieure à celle de la température normale à laquelle doit être porté le fil, et ce pendant une durée telle que ce dernier ne soit pas endommagé, cette première phase étant suivie d'un traitement d'équilibre à une température conventionnelle. Une telle solution séduisante par le fait qu'elle permet de diminuer considérablement la longueur des fours pour une vitesse de défilement donnée, nécessite cependant des appareillages de conception complexe, difficiles à mettre en oeuvre.Among the solutions proposed to obtain very good regularity in the heat transmission and also to facilitate the problems of temperature regulation from position to position on a machine so that the entire production is homogeneous, it has been envisaged for a very long time to carry out heat treatments which could be described as "sequential" by making ovens along the length of which follow several distinct heat treatment zones. Among these solutions, mention may be made of those which are the subject of French patent 1 204 634, in which two successive treatments are carried out inside the same oven, one during which the wire is subjected to a temperature considerably higher than that of the normal temperature to which the wire must be brought, and this for a period such that the latter is not damaged, this first phase being followed by an equilibrium treatment at a conventional temperature. Such an attractive solution by the fact that it makes it possible to considerably reduce the length of the ovens for a given running speed, however requires apparatuses of complex design, difficult to implement.
Une solution similaire est décrite dans le brevet français 1 216 847 et son certificat d'addition 76 861.A similar solution is described in French patent 1,216,847 and its certificate of addition 76,861.
Pour d'autres types de traitement, il peut être souhaitable d'avoir une séquence d'échange thermique différente, par exemple d'avoir une élévation lente et régulière de la mise en température du fil suivie d'un choc thermique plus important, ou de combiner de telles phases de manière différente.For other types of treatment, it may be desirable to have a different heat exchange sequence, for example to have a slow and regular rise in the temperature rise of the wire followed by a greater thermal shock, or to combine such phases differently.
Or on a trouvé, et c'est ce qui fait l'objet de la présente invention, un nouveau type de four de conception particulièrement simple, qui permet de résoudre l'ensemble de ces problèmes.Now we have found, and this is what is the subject of the present invention, a new type of oven of particularly simple design, which makes it possible to solve all of these problems.
D'une manière générale, le nouveau type de four conforme à l'invention pour le traitement thermique d'un fil, par exemple lors d'une opération d'étirage texturation, est du type constitué par une enceinte isolante qui entoure un bloc chauffant comportant un canal longitudinal à l'intérieur duquel passe le fil à traiter, des moyens de guidage dudit fil étant prévus en amont et en aval du four pour assurer son positionnement, et il se caractérise en ce que ledit canal a une section telle que sur une partie de sa longueur, le fil circule à l'intérieur éloigné de la paroi, son élévation de température étant obtenue par radiation dans cette zone et que, dans la partie restante du four, il vienne en contact avec ladite paroi, la transmission de chaleur étant alors réalisée par contact (ou conduction).In general, the new type of oven according to the invention for the heat treatment of a wire, for example during a texturing stretching operation, is of the type constituted by an insulating enclosure which surrounds a heating block comprising a longitudinal channel inside which passes the wire to be treated, means for guiding said wire being provided upstream and downstream of the oven to ensure its positioning, and it is characterized in that said channel has a section such that on part of its length, the wire circulates inside the wall, its temperature rise being obtained by radiation in this area and that, in the remaining part of the oven, it comes into contact with said wall, the transmission of heat is then produced by contact (or conduction).
Selon une forme de réalisation conforme à l'invention, l'élément chauffant proprement dit se présente sous la forme d'un bloc cylindrique, percé sur sa longueur d'un canal également cylindrique, la zone de chauffage par contact étant obtenue en disposant à l'intérieur dudit canal un profilé, bon conducteur de la chaleur, qui s'appuie contre la surface interne du conduit et qui présente une surface d'appui pour le fil disposée sensiblement selon l'axe dudit conduit.According to an embodiment in accordance with the invention, the heating element proper is in the form of a cylindrical block, pierced along its length with a channel which is also cylindrical, the contact heating zone being obtained by arranging at inside said channel a profile, good conductor of heat, which bears against the internal surface of the conduit and which has a bearing surface for the wire arranged substantially along the axis of said conduit.
Selon cette forme de réalisation conforme à l'invention, le bloc chauffant est réalisé en céramique (ou tout autre matériau équivalent), des résistances étant noyées dans la paroi. Le profilé servant de surface d'appui est, quant à lui, réalisé dans tous matériaux bons conducteurs de la chaleur, tels qu'en acier inoxydable, céramique ou autres matières.According to this embodiment according to the invention, the heating block is made of ceramic (or any other equivalent material), resistors being embedded in the wall. The profile serving as a bearing surface is, for its part, made of all materials which are good conductors of heat, such as stainless steel, ceramic or other materials.
Grâce à une telle conception, il est possible de réaliser les zones de chauffage distinctes par radiation et conduction, zones qui peuvent être combinées de toute manière par simple positionnement du profilé servant de surface d'appui à l'intérieur du conduit central. On peut réaliser ainsi un four comportant une zone d'entrée par chauffage par radiation, suivie d'une zone de sortie par chauffage par conduction (contact) ou inversement ; il peut être envisagé d'avoir des zones d'entrée et de sortie par chauffage par radiation et une zone centrale par chauffage par conduction.Thanks to such a design, it is possible to produce the separate heating zones by radiation and conduction, zones which can be combined anyway by simple positioning of the profile serving as a bearing surface inside the central duct. It is thus possible to produce an oven comprising an entry zone by radiation heating, followed by an exit zone by conduction heating (contact) or vice versa; it can be envisaged to have entry and exit zones by radiant heating and a central zone by conduction heating.
De plus, un tel four peut être soit complètement fermé, soit présenter une fente longitudinale (four dit "ouvert").In addition, such an oven can be either completely closed or have a longitudinal slot (so-called "open" oven).
D'autres formes de réalisation peuvent être également envisagées, tel que par exemple de réaliser le four à partir d'un seul bloc comportant deux zones différentes constituées par exemple de deux canaux cylindriques ayant des diamètres différents, disposés dans le prolongement l'un de l'autre, le fil étant en contact avec la surface du canal de petit diamètre, et étant maintenu écarté de la surface de l'autre canal de plus grand diamètre, ce qui permet ainsi de réaliser les deux types de chauffage, radiation et contact (ou conduction) conformément à l'invention. Il pourra également être envisagé de juxtaposer à la suite les uns des autres des modules élémentaires, chaque module permettant de réaliser un type de chauffage.Other embodiments can also be envisaged, such as for example making the oven from a single block comprising two different zones constituted for example by two cylindrical channels having different diameters, arranged in the extension one of the other, the wire being in contact with the surface of the channel of small diameter, and being kept apart from the surface of the other channel of larger diameter, which thus makes it possible to carry out the two types of heating, radiation and contact (or conduction) according to the invention. It may also be envisaged to juxtapose, one after the other, elementary modules, each module making it possible to produce a type of heating.
Les dimensions d'un tel four et les gammes de température qu'il permet d'obtenir, seront adaptées en fonction des traitements à réaliser. A titre indicatif, pour une machine de texturation par fausse torsion, la longueur peut être comprise entre 0,30 mètre et 1,50 mètre, la température entre 300 et 1000°C.The dimensions of such an oven and the temperature ranges which it makes it possible to obtain, will be adapted according to the treatments to be carried out. As an indication, for a false twist texturing machine, the length can be between 0.30 meter and 1.50 meter, the temperature between 300 and 1000 ° C.
La longueur de chauffage par contact sera avantageusement comprise entre 25 et 75 % de la longueur totale du four.The length of contact heating will advantageously be between 25 and 75% of the total length of the oven.
De plus, dans la zone de contact, le passage du fil peut être soit rectiligne, soit éventuellement courbe, en adaptant la forme du profilé.In addition, in the contact zone, the passage of the wire can be either straight, or possibly curved, by adapting the shape of the profile.
L'invention et les avantages qu'elle apporte seront cependant mieux compris grâce à l'exemple de réalisation donné ci-après à titre indicatif, mais non limitatif, et qui est illustré par les schémas annexés dans lesquels :
- les figures 1 et 2 illustrent schématiquement en perspective et en coupe longitudinale, la structure d'un four réalisé conformément à l'invention ;
- la figure 3 est une vue en élévation d'une position de travail d'une machine de texturation par fausse torsion équipée d'un four conforme à l'invention.
- Figures 1 and 2 schematically illustrate in perspective and in longitudinal section, the structure of an oven produced according to the invention;
- Figure 3 is an elevational view of a working position of a false twist texturing machine equipped with an oven according to the invention.
Si l'on se reporte aux figures 1 et 2 qui illustrent l'invention, seul l'élément chauffant proprement dit du four conforme à l'invention sera décrit, la structure de l'enceinte isolante, les moyens de chauffage et de régulation que comporte un tel four étant conventionnels et n'étant pas décrits par mesure de simplification. A titre indicatif, de tels moyens peuvent être réalisés d'une manière similaire aux enseignements du brevet français no. 1 515 673 qui constitue l'état de la technique le plus proche.If we refer to Figures 1 and 2 which illustrate the invention, only the actual heating element of the oven according to the invention will be described, the structure of the insulating enclosure, the heating and regulation means that includes such an oven being conventional and not described for simplification. As an indication, such means can be implemented in a manner similar to the teachings of French patent no. 1,515,673 which constitutes the closest state of the art.
Si l'on se reporte aux figures 1 et 2, l'élément chauffant du four conforme à l'invention est constitué d'une enceinte isolante (13), schématisée en traits mixtes à la figure 1 et d'un bloc (1), en céramique (ou autre matériau équivalent), et qui est percé sur toute sa longueur d'un conduit de section circulaire (2) qui peut être soit fermé, soit comporter une fente longitudinale comme illustré à la figure 1 annexée. Des éléments de guidage (3,4) pour le fil (5), sont disposés en amont et en aval du bloc. Les éléments chauffants son disposés de manière connue à l'intérieur de la paroi du bloc (1). Ces éléments chauffants peuvent soit communiquer une température régulière sur toute la longueur du four, soit éventuellement permettre d'avoir des zones portées à des températures différentes.If one refers to Figures 1 and 2, the heating element of the oven according to the invention consists of an insulating enclosure (13), shown schematically in phantom in Figure 1 and a block (1) , ceramic (or other equivalent material), and which is pierced over its entire length with a circular section conduit (2) which can be either closed, or have a longitudinal slot as illustrated in Figure 1 attached. Guide elements (3,4) for the wire (5) are arranged upstream and downstream of the block. The heating elements are arranged in a known manner inside the wall of the block (1). These heating elements can either communicate a regular temperature over the entire length of the oven, or possibly allow zones to be brought to different temperatures.
Conformément à l'invention, la section interne (2) du conduit axial est telle que dans une zone (A), le fil (5) soit maintenu à distance de la paroi interne (6) du conduit (2), alors que dans une autre zone (B), le fil (5) soit chauffé par contact. La zone (B) de chauffage par contact est obtenue, dans le mode de réalisation illustré, en introduisant à l'intérieur du conduit (2), un profilé embouti (7). Un tel profilé (7), en acier inoxydable par exemple (ou tout autre matériau équivalent tel que céramique), a une section telle qu'il s'appuie régulièrement contre la paroi interne du conduit (6) et qu'il présente une surface (8) disposée sensiblement selon l'axe de défilement du fil (5). Cette surface d'appui (8) peut être soit rectiligne, soit éventuellement être courbe. Si la face inférieure (8) en contact de laquelle se trouve le fil (5) peut être plane, de préférence elle sera incurvée (la section de l'élément embouti ayant sensiblement la forme d'un "haricot"), ce qui favorise le positionnement du fil lors de son défilement, notamment quand celui-ci est réalisé à très grande vitesse.According to the invention, the internal section (2) of the axial duct is such that in a zone (A), the wire (5) is kept at a distance from the internal wall (6) of the duct (2), while in another zone (B), the wire (5) is heated by contact. The contact heating zone (B) is obtained, in the illustrated embodiment, by inserting a deep-drawn profile (7) inside the duct (2). Such a profile (7), for example made of stainless steel (or any other equivalent material such as ceramic), has a section such that it bears regularly against the internal wall of the duct (6) and that it has a surface (8) arranged substantially along the axis of travel of the wire (5). This bearing surface (8) can be either rectilinear or possibly be curved. If the lower face (8) in contact with which the wire (5) is located can be flat, preferably it will be curved (the section of the stamped element having substantially the shape of a "bean"), which favors the positioning of the wire when it travels, in particular when the latter is produced at very high speed.
Une telle conception de four est particulièrement adaptée pour réaliser des machines de texturation, notamment par fausse torsion, compactes, tel qu'illustré à la figure 3. Dans une telle machine, le four conforme à l'invention désigné par la référence générale (F), est disposé entre un délivreur (10) pour le fil (5) et une zone de refroidissement (11) suivie d'uen broche de fausse torsion (12). Le four (F) est, dans un tel cas, conçu de la manière illustrée aux figures 1 et 2 pour que dans la zone d'entrée (A), le fil soit chauffé par radiation, alors que dans la zone de sortie (B), il est chauffé par conduction. Il est possible de réduire la longueur du four étant donné que dans la zone (A), le fil n'étant pas en contact avec les parois, il peut être élevé très rapidement en température, la zone (B) permettant de favoriser l'échange thermique et assurant également le guidage et le positionnement du fil dans la zone du four par chauffage par radiation. A titre indicatif, un tel four (F) peut avoir une longueur comprise entre 0,3 et 1,5 mètre, la température comprise entre 300 et 1000°C et le diamètre du conduit interne (2) pouvant être de douze millimètres.Such an oven design is particularly suitable for making texturing machines, in particular by false twist, compact, as illustrated in FIG. 3. In such a machine, the oven according to the invention designated by the general reference (F), is arranged between a feeder (10) for the wire (5) and a cooling zone (11) followed by a false twist spindle (12). The oven (F) is, in such a case, designed as illustrated in FIGS. 1 and 2 so that in the entry zone (A), the wire is heated by radiation, while in the exit zone (B ), it is heated by conduction. It is possible to reduce the length of the oven given that in zone (A), the wire not being in contact with the walls, it can be raised very quickly in temperature, zone (B) making it possible to favor the heat exchange and also ensuring the guiding and positioning of the wire in the furnace area by radiation heating. As an indication, such an oven (F) may have a length of between 0.3 and 1.5 meters, the temperature between 300 and 1000 ° C. and the diameter of the internal conduit (2) possibly being twelve millimeters.
Bien entendu, l'invention n'est pas limitée à l'exemple de réalisation décrit dans la présente demande, mais elle en couvre toutes les variantes réalisées dans le même esprit.Of course, the invention is not limited to the exemplary embodiment described in the present application, but it covers all the variants produced in the same spirit.
Ainsi, si dans la description, l'invention a été décrite pour le traitement d'un seul fil, il pourrait être envisagé de réaliser des fours permettant de traiter simultanément deux fils.Thus, if in the description, the invention has been described for the treatment of a single wire, it could be envisaged to produce ovens allowing two wires to be treated simultaneously.
Claims (7)
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FR9016395A FR2670807A1 (en) | 1990-12-21 | 1990-12-21 | DEVICE FOR THE HEAT TREATMENT OF MOVING THREADS. |
| FR9016395 | 1990-12-21 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| EP0493277A1 true EP0493277A1 (en) | 1992-07-01 |
Family
ID=9403770
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP91420456A Withdrawn EP0493277A1 (en) | 1990-12-21 | 1991-12-17 | Apparatus for the thermal treatment of moving yarns |
Country Status (3)
| Country | Link |
|---|---|
| EP (1) | EP0493277A1 (en) |
| JP (1) | JPH04308240A (en) |
| FR (1) | FR2670807A1 (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5359845A (en) * | 1992-04-29 | 1994-11-01 | Icbt Roanne | Process and apparatus for cooling a heated yarn |
| CN108060481A (en) * | 2017-12-15 | 2018-05-22 | 苏州天亦辰针织有限公司 | A kind of polyester filament elasticizer |
| WO2019114001A1 (en) * | 2017-12-15 | 2019-06-20 | 金莉芬 | Texturing machine for polyester filaments |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO1996032525A1 (en) * | 1995-04-14 | 1996-10-17 | Nippon Tungsten Co., Ltd. | Noncontact heater for wire material |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3969800A (en) * | 1972-08-28 | 1976-07-20 | Beloit Corporation | Stretching device for filaments or strands |
| EP0102240A2 (en) * | 1982-08-27 | 1984-03-07 | Teijin Limited | Method for treating metallic or ceramic surfaces at high temperatures |
| FR2585734A1 (en) * | 1985-07-30 | 1987-02-06 | Ic Acbf Sa | Device for the thermal treatment of moving yarns |
-
1990
- 1990-12-21 FR FR9016395A patent/FR2670807A1/en active Granted
-
1991
- 1991-12-17 EP EP91420456A patent/EP0493277A1/en not_active Withdrawn
- 1991-12-20 JP JP35495591A patent/JPH04308240A/en not_active Withdrawn
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3969800A (en) * | 1972-08-28 | 1976-07-20 | Beloit Corporation | Stretching device for filaments or strands |
| EP0102240A2 (en) * | 1982-08-27 | 1984-03-07 | Teijin Limited | Method for treating metallic or ceramic surfaces at high temperatures |
| FR2585734A1 (en) * | 1985-07-30 | 1987-02-06 | Ic Acbf Sa | Device for the thermal treatment of moving yarns |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5359845A (en) * | 1992-04-29 | 1994-11-01 | Icbt Roanne | Process and apparatus for cooling a heated yarn |
| CN108060481A (en) * | 2017-12-15 | 2018-05-22 | 苏州天亦辰针织有限公司 | A kind of polyester filament elasticizer |
| WO2019114001A1 (en) * | 2017-12-15 | 2019-06-20 | 金莉芬 | Texturing machine for polyester filaments |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH04308240A (en) | 1992-10-30 |
| FR2670807A1 (en) | 1992-06-26 |
| FR2670807B1 (en) | 1993-02-26 |
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