WO2006021732A2 - Method and device for heat treatment of a flexible material - Google Patents

Method and device for heat treatment of a flexible material Download PDF

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Publication number
WO2006021732A2
WO2006021732A2 PCT/FR2005/050672 FR2005050672W WO2006021732A2 WO 2006021732 A2 WO2006021732 A2 WO 2006021732A2 FR 2005050672 W FR2005050672 W FR 2005050672W WO 2006021732 A2 WO2006021732 A2 WO 2006021732A2
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WO
WIPO (PCT)
Prior art keywords
flexible material
cylinder
microwaves
main cylinder
heat treatment
Prior art date
Application number
PCT/FR2005/050672
Other languages
French (fr)
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WO2006021732A3 (en
Inventor
Michel Boulard
Original Assignee
Michel Boulard
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Application filed by Michel Boulard filed Critical Michel Boulard
Publication of WO2006021732A2 publication Critical patent/WO2006021732A2/en
Publication of WO2006021732A3 publication Critical patent/WO2006021732A3/en

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Classifications

    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
    • H05B6/00—Heating by electric, magnetic or electromagnetic fields
    • H05B6/64—Heating using microwaves
    • H05B6/78—Arrangements for continuous movement of material
    • H05B6/788—Arrangements for continuous movement of material wherein an elongated material is moved by applying a mechanical tension to it
    • D—TEXTILES; PAPER
    • D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06B—TREATING TEXTILE MATERIALS USING LIQUIDS, GASES OR VAPOURS
    • D06B19/00—Treatment of textile materials by liquids, gases or vapours, not provided for in groups D06B1/00 - D06B17/00
    • D06B19/0005—Fixing of chemicals, e.g. dyestuffs, on textile materials
    • D06B19/007—Fixing of chemicals, e.g. dyestuffs, on textile materials by application of electric energy
    • D—TEXTILES; PAPER
    • D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06M—TREATMENT, NOT PROVIDED FOR ELSEWHERE IN CLASS D06, OF FIBRES, THREADS, YARNS, FABRICS, FEATHERS OR FIBROUS GOODS MADE FROM SUCH MATERIALS
    • D06M10/00—Physical treatment of fibres, threads, yarns, fabrics, or fibrous goods made from such materials, e.g. ultrasonic, corona discharge, irradiation, electric currents, or magnetic fields; Physical treatment combined with treatment with chemical compounds or elements
    • D06M10/003—Treatment with radio-waves or microwaves
    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
    • H05B6/00—Heating by electric, magnetic or electromagnetic fields
    • H05B6/64—Heating using microwaves
    • H05B6/80—Apparatus for specific applications
    • H05B6/806—Apparatus for specific applications for laboratory use

Definitions

  • the present invention relates to a method and a device for the heat treatment of flexible materials using a microwave application.
  • the soft materials concerned may be fabric, thread, leather, cardboard, paper, etc.
  • the treatments concerned may be the polymerization, in particular of textiles, scouring, bleaching, fixing of dyes, etc.
  • a fabric set in motion by means of rollers is simultaneously subjected to microwaves in an enclosure.
  • the use of microwaves is advantageous because the microwaves allow a short heating time.
  • the process of treating the fabric is therefore shorter. It also makes it possible not to deteriorate the fibers.
  • the inhomogeneity of the heating results from the installation of standing waves within the enclosure. The inhomogeneities may cause local defects on the fabric and overall, adversely affect the quality of the heat treatment.
  • the invention overcomes the disadvantages presented above by allowing to obtain a high homogeneity of heating. It relates to a method of heat treatment of a flexible material comprising at least one step of circulation of the flexible material on a cylinder in rotational movement and heated from the inside, this step being simultaneous with a step of applying microwaves near the flexible material and opposite the surface of the cylinder.
  • the invention makes it possible to activate the waves by setting these waves in motion.
  • the cylinder is advantageously made of steel, a material that allows good reflection of the waves on its surface.
  • the cylinder is coated with a layer of a material of the type known under the trademark Teflon whose function is the conductivity of microwaves. Teflon heat combined with that of the metal constituting the cylinder has the effect of attracting microwaves.
  • a Teflon layer for example 3 to 5 mm thick, allows the waves to penetrate the fabric to the steel cylinder which reflects the waves. This allows the treatment of the fabric on both sides.
  • the method is implemented in a chamber in a cylinder portion.
  • the enclosure comprises a variable-speed rotating antenna intended to eliminate stationary microwaves inside the enclosure and thus to optimize the yields of the heat treatment of the flexible material.
  • the use of a cylindrical or semi-cylindrical enclosure makes it possible to confine the waves which are present in a thin space between the cylinder and the wall of the semi-cylindrical enclosure.
  • the circulation of the flexible material on the cylinder is guided by guiding means so that the material envelops the cylinder.
  • the guides are for example small cylinders placed near the cylinder on which the flexible material flows.
  • the step of applying microwaves is carried out using orientable microwave sources.
  • the method comprises a preliminary step of heating the flexible material.
  • This embodiment has the advantage of preparing the heating by microwaves which are more efficient from 60 0 C.
  • a plurality of stages of circulation of the flexible material is performed on a plurality of cylinders in rotational movement and heated from the inside, steps performed simultaneously at a micro-application step. waves.
  • the plurality of cylinders is heated to a plurality of temperatures so as to allow a flexible heat treatment of the flexible material.
  • the heating of at least one cylinder and the characteristics of the movement of the cylinder are controlled by means of a computer program.
  • the computer program can be stored on removable media.
  • the invention also relates to a device for implementing the method described above as well as a computer program including instructions for implementing such a method. It follows from the technical characteristics described above a suppression of standing waves making homogeneous the microwave field inside the enclosure and therefore the heating of the flexible material. This heating homogeneity thus obtained makes it possible to optimize both the resistance of the flexible material and the fixing of the products on the flexible material, in particular the fixation of the dyes. Local defects on the tissues are thus avoided.
  • FIG. 1 represents a device for implementing a method according to the invention.
  • FIG. 2 represents a device for a particular embodiment of a method according to the invention.
  • a device 100 for the heat treatment of a flexible material 101 comprises at least one cylinder 102 rotated about an axis 103 and heated from the inside.
  • the cylinder 102 is set in motion by a thermo-regulated motor, the temperature taken on the materials being effected by means of infrared probes installed on the wall of the enclosure 102.
  • the flexible material 101 flows.
  • according to the invention comprises at least one microwave application module 104 placed near the cylinder. In FIG. 1, five microwave application modules 104 are shown. The role of these modules 104 is to apply microwaves to the flexible material 101 when it is circulating on the cylinder 102.
  • microwave sources for example magnetrons of 800 watts, which are oriented towards the cylinder and can in this case be adjustable in order to obtain various kinds of treatment.
  • orientable sources make it possible to determine the best position facing the cylinder 102.
  • the microwave application is made close to the flexible material 101 and opposite the surface of the cylinder 102.
  • the cylinder 102 has no magnetic properties.
  • the invention when the invention is implemented to perform dyeing, it is useful for the cylinder 102 to have oxidation-reduction properties to prevent oxidation of the dye.
  • the cylinder 102 is advantageously made of stainless steel.
  • the heating makes it possible to reach temperatures of the order of at least 200 ° C.
  • the cylindrical shape makes it possible to have a homogeneous distribution of the waves which are thus set in motion in a homogeneous manner.
  • the movement of the cylinder 102 creates a dynamic within the microwave field.
  • the heat and the movement of the cylinder make it possible to control the spatial distribution of the heat sources.
  • the cylinder 102 is coated with a layer 105 of a material of a type known as Teflon.
  • Teflon a material of a type known as Teflon.
  • This material is conductive and transparent for microwaves: it thus allows the microwaves to pass through the fabric and the Teflon layer, are reflected on the cylinder, for example steel, and crosses the Teflon and the fabric.
  • the fabric is treated on both sides.
  • Teflon makes it possible to modify the angle of crossing of the microwaves and as the form is cylindrical this is all the more effective. Teflon thus plays the role of distributor and diffuser of microwaves in the tissue to be treated. It also has the advantage of having non-stick properties and not to oxidize. For example, when dyeing is carried out using the invention, this prevents the dye from sticking to the cylinder.
  • the device 100 comprises an enclosure 107 in a cylinder portion, for example a cylindrical enclosure, in which the cylinder 102 is placed.
  • the enclosure is for example made of stainless steel.
  • this enclosure 107 which follows the shape of the cylinder 102 are shown five microwave application modules 104.
  • the device 100 may include guides 108, for example, as shown in FIG. 1, two small guide rolls, for guiding the flow of the flexible material 101 over the roll 102 so that the flexible material 101 envelopes the roll 102.
  • small guide rolls 108 are preferably covered with 'Teflon to prevent the reflected waves and the creation of a magnetic field with the main cylinder 102.
  • the device includes computer means, not shown in the figure, for controlling the heating of at least one cylinder 102 and the characteristics of the movement of the cylinder 102 by means of a computer program.
  • the computer program is stored on a removable medium, independent of computer resources.
  • the flexible material is heated before passing into the chamber 107 and the cylinder 102. It can for example receive a spray and / or be passed through a heated bath and / or be passed in a pre-enclosure 106 comprising microwave sources 109 which heat the flexible material. These sources are for example magnetrons of 1200 watts. Thus it is possible to bring the flexible material to a temperature where the microwaves are known to be more active, namely around 60 0 C. According to a particular embodiment of the invention presented in FIG.
  • the device 200 includes a plurality of cylinders 202, 212, 222, for example made of stainless steel, rotating about axes 203, 213, 223 and heated from the inside on which the flexible material 201 and a plurality of microwave application modules 204, 214, 224 circulate for applying microwaves to the flexible material 201 when it is circulating on the cylinders 202. , 212, 222.
  • the plurality of cylinders 202, 212, 222 for example made of stainless steel, rotating about axes 203, 213, 223 and heated from the inside on which the flexible material 201 and a plurality of microwave application modules 204, 214, 224 circulate for applying microwaves to the flexible material 201 when it is circulating on the cylinders 202. , 212, 222.
  • the speeds of passage on the cylinders can also be adjusted. All these data on the implementation characteristics of the method are advantageously stored on a removable computer medium intended to be read by computer means in connection with the device according to the invention in order to control it according to the specific needs of the heat treatment. .
  • the device shown in FIG. 2 makes it possible to work at three different temperatures. Mechanical improvements within the reach of those skilled in the art can be used to regulate the speed of the flexible material on these cylinders and at these temperatures.
  • the various treatment devices described above in particular by dipping in a bath or by spraying, are installed between the cylinders of the plurality of cylinders 202, 212.

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  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • General Chemical & Material Sciences (AREA)
  • Health & Medical Sciences (AREA)
  • Clinical Laboratory Science (AREA)
  • General Health & Medical Sciences (AREA)
  • Treatment Of Fiber Materials (AREA)
  • Processing And Handling Of Plastics And Other Materials For Molding In General (AREA)

Abstract

The invention concerns a method for heat treatment of a flexible material comprising at least one step which consists in circulating the flexible material on a rotating roll heated within, said step being simultaneous with a step which consists in applying microwaves proximate said flexible material and opposite the roll surface. The invention enables efficient and rapid heat treatments to be carried out without damaging the properties, in particular the resistance, of the flexible material.

Description

PROCEDE ET DISPOSITIF POUR LE TRAITEMENT THERMIQUE D'UN MATERIAUMETHOD AND DEVICE FOR THERMALLY TREATING A MATERIAL
SOUPLEFLEXIBLE
La présente invention concerne un procédé et un dispositif pour le traitement thermique de matériaux souples utilisant une application de micro-ondes.The present invention relates to a method and a device for the heat treatment of flexible materials using a microwave application.
Les matériaux souples concernés peuvent être du tissu, du fil, du cuir, du carton, du papier... Les traitements concernés peuvent être la polymérisation, notamment de textiles, le débouillissage, le blanchiment, la fixation de teintures...The soft materials concerned may be fabric, thread, leather, cardboard, paper, etc. The treatments concerned may be the polymerization, in particular of textiles, scouring, bleaching, fixing of dyes, etc.
Généralement ces traitements mettent en jeu une élévation de la température et peuvent donc être qualifiés de traitement thermique.Generally these treatments involve a rise in temperature and can therefore be called heat treatment.
Des traitements thermiques de tissus mettant en œuvre des micro-ondes sont connus de l'art antérieur, notamment de la demande de brevet EP 0 031 862 Al.Thermal treatments of fabrics using microwaves are known from the prior art, in particular patent application EP 0 031 862 A1.
Dans ce document, un tissu mis en mouvement à l'aide de rouleaux est soumis simultanément à des micro-ondes dans une enceinte. L'usage des micro-ondes est avantageux car les micro- ondes permettent un temps de chauffe court. Le procédé de traitement du tissu est donc plus court. Il permet en outre de ne pas détériorer les fibres. Cependant, avec un tel procédé, on observe qu'il n'est pas possible de maîtriser la distribution spatiale de la chaleur et donc de la mise en chauffe. Il est en effet difficile d'obtenir une homogénéité du chauffage avec un tel procédé. L'inhomogénéité de l'échauffement résulte de l'installation d'ondes stationnaires au sein de l'enceinte. Les inhomogénéités peuvent entraîner des défauts locaux sur le tissu et globalement, nuisent à la qualité du traitement thermique.In this document, a fabric set in motion by means of rollers is simultaneously subjected to microwaves in an enclosure. The use of microwaves is advantageous because the microwaves allow a short heating time. The process of treating the fabric is therefore shorter. It also makes it possible not to deteriorate the fibers. However, with such a process, it is observed that it is not possible to control the spatial distribution of heat and therefore the heating up. It is indeed difficult to obtain homogeneity of the heating with such a method. The inhomogeneity of the heating results from the installation of standing waves within the enclosure. The inhomogeneities may cause local defects on the fabric and overall, adversely affect the quality of the heat treatment.
L' invention remédie aux inconvénients présentés ci avant en permettant d'obtenir une grande homogénéité d'échauffement. Elle concerne un procédé de traitement thermique d'un matériau souple comprenant au moins une étape de circulation du matériau souple sur un cylindre en mouvement de rotation et chauffé de l'intérieur, cette étape étant simultanée à une étape d'application de micro-ondes à proximité du matériau souple et à l'opposé de la surface du cylindre.The invention overcomes the disadvantages presented above by allowing to obtain a high homogeneity of heating. It relates to a method of heat treatment of a flexible material comprising at least one step of circulation of the flexible material on a cylinder in rotational movement and heated from the inside, this step being simultaneous with a step of applying microwaves near the flexible material and opposite the surface of the cylinder.
L' invention permet d'activer les ondes par la mise en mouvement de ces ondes. Le cylindre est avantageusement en acier, matériau permettant une bonne réflexion des ondes sur sa surface. Selon une réalisation, le cylindre est revêtu d'une couche d'un matériau du type connu sous la marque Téflon ayant pour fonction la conductibilité des micro-ondes. La chaleur du Téflon combinée à celle du métal constituant le cylindre a pour effet d'attirer les micro-ondes. Une couche de Téflon, par exemple de 3 à 5 mm d'épaisseur, permet de laisser pénétrer les ondes dans le tissu vers le cylindre en acier qui réfléchit les ondes. Cela permet le traitement du tissu sur les deux faces.The invention makes it possible to activate the waves by setting these waves in motion. The cylinder is advantageously made of steel, a material that allows good reflection of the waves on its surface. According to one embodiment, the cylinder is coated with a layer of a material of the type known under the trademark Teflon whose function is the conductivity of microwaves. Teflon heat combined with that of the metal constituting the cylinder has the effect of attracting microwaves. A Teflon layer, for example 3 to 5 mm thick, allows the waves to penetrate the fabric to the steel cylinder which reflects the waves. This allows the treatment of the fabric on both sides.
Selon une réalisation, le procédé est mis en œuvre dans une enceinte en portion de cylindre.According to one embodiment, the method is implemented in a chamber in a cylinder portion.
Selon cette réalisation, l'enceinte comprend une antenne tournante à vitesse variable destinée à éliminer des micro-ondes stationnaires à l'intérieur de l'enceinte et ainsi d'optimiser les rendements du traitement thermique du matériau souple. L'usage d'une enceinte cylindrique ou semi cylindrique permet de confiner les ondes qui sont présentes dans un mince espace entre le cylindre et la paroi de l'enceinte semi cylindrique. Selon une réalisation, la circulation du matériau souple sur le cylindre est guidée par des moyens de guidage de manière à ce que le matériau enveloppe le cylindre.According to this embodiment, the enclosure comprises a variable-speed rotating antenna intended to eliminate stationary microwaves inside the enclosure and thus to optimize the yields of the heat treatment of the flexible material. The use of a cylindrical or semi-cylindrical enclosure makes it possible to confine the waves which are present in a thin space between the cylinder and the wall of the semi-cylindrical enclosure. According to one embodiment, the circulation of the flexible material on the cylinder is guided by guiding means so that the material envelops the cylinder.
Dans cette réalisation, les guides sont par exemple des petits cylindres placés à proximité du cylindre sur lequel circule le matériau souple.In this embodiment, the guides are for example small cylinders placed near the cylinder on which the flexible material flows.
Selon une réalisation, l'étape d'application de micro¬ ondes est réalisée à l'aide de sources micro-ondes orientables.According to one embodiment, the step of applying microwaves is carried out using orientable microwave sources.
Selon une réalisation, le procédé comprend une étape préalable de chauffage du matériau souple. Cette réalisation présente l'avantage de préparer l'échauffement par les micro-ondes qui sont plus efficaces à partir de 600C.According to one embodiment, the method comprises a preliminary step of heating the flexible material. This embodiment has the advantage of preparing the heating by microwaves which are more efficient from 60 0 C.
Selon une mise en œuvre de l'invention, une pluralité d'étapes de circulation du matériau souple est réalisée sur une pluralité de cylindres en mouvement de rotation et chauffés de l'intérieur, étapes réalisées simultanément à une étape d'application de micro-ondes.According to an implementation of the invention, a plurality of stages of circulation of the flexible material is performed on a plurality of cylinders in rotational movement and heated from the inside, steps performed simultaneously at a micro-application step. waves.
Cette mise en œuvre permet d'adapter les conditions du traitement thermique. Ainsi, selon une réalisation, la pluralité de cylindres est chauffée à une pluralité de températures de manière à permettre un traitement thermique modulable du matériau souple.This implementation makes it possible to adapt the conditions of the heat treatment. Thus, according to one embodiment, the plurality of cylinders is heated to a plurality of temperatures so as to allow a flexible heat treatment of the flexible material.
Selon une réalisation, le chauffage d'au moins un cylindre et les caractéristiques du mouvement du cylindre sont commandés à l'aide d'un programme d'ordinateur.In one embodiment, the heating of at least one cylinder and the characteristics of the movement of the cylinder are controlled by means of a computer program.
Cette caractéristique permet de pouvoir modifier le procédé en fonction du matériau souple traité ou du traitement souhaité. l'l'This feature makes it possible to modify the process depending on the flexible material treated or the desired treatment. the the
Le programme d'ordinateur peut être stocké sur un support amovible.The computer program can be stored on removable media.
Le stockage du programme d'ordinateur sur un support amovible peut contribuer à la préservation de la confidentialité du procédé.Storing the computer program on removable media can help preserve the confidentiality of the process.
L'invention concerne également un dispositif pour mettre en œuvre le procédé ci-dessus décrit ainsi qu'un programme d'ordinateur incluant des instructions pour mettre en œuvre un tel procédé. II résulte des caractéristiques techniques ci-dessus décrites une suppression des ondes stationnaires rendant homogène le champ de micro-ondes à intérieur de enceinte et par conséquent le chauffage du matériau souple. Cette homogénéité de chauffage ainsi obtenue permet d'optimiser à la fois la résistance du matériau souple et la fixation des produits sur le matériau souple, notamment la fixation des teintures. Les défauts locaux sur les tissus sont ainsi évités.The invention also relates to a device for implementing the method described above as well as a computer program including instructions for implementing such a method. It follows from the technical characteristics described above a suppression of standing waves making homogeneous the microwave field inside the enclosure and therefore the heating of the flexible material. This heating homogeneity thus obtained makes it possible to optimize both the resistance of the flexible material and the fixing of the products on the flexible material, in particular the fixation of the dyes. Local defects on the tissues are thus avoided.
D'autres caractéristiques et avantages de l'invention apparaîtront avec la description faite ci-dessous, cette dernière étant effectuée à titre descriptif et non limitatif en faisant référence aux dessins ci-après sur lesquels:Other characteristics and advantages of the invention will become apparent with the description given below, the latter being carried out for descriptive and non-limiting purposes with reference to the following drawings in which:
La figure 1 représente un dispositif pour mettre en œuvre un procédé selon l'invention.FIG. 1 represents a device for implementing a method according to the invention.
La figure 2 représente un dispositif pour une réalisation particulière d'un procédé selon l'invention.FIG. 2 represents a device for a particular embodiment of a method according to the invention.
Selon la figure 1, un dispositif 100 pour le traitement thermique d'un matériau souple 101 comprend au moins un cylindre 102 en mouvement de rotation autour d'un axe 103 et chauffé de l'intérieur. Le cylindre 102 est mis en mouvement par une motorisation thermo régulée, la prise de température sur les matériaux étant effectuée au moyen de sondes infrarouges installées sur la paroi de l'enceinte 102. Sur ce cylindre 102, circule le matériau souple 101. Le dispositif selon l'invention comprend au moins un module d'application de micro-ondes 104 placé à proximité du cylindre. Sur la figure 1, cinq modules d'application de micro-ondes 104 sont représentés. Le rôle de ces modules 104 est d'appliquer des micro-ondes au matériau souple 101 lorsque celui-ci circule sur le cylindre 102. Ils contiennent des sources de micro-ondes, par exemple des magnétrons de 800 watts, qui sont orientées vers le cylindre et peuvent en l'occurrence être orientables afin de pouvoir obtenir diverses sortes de traitement. Notamment, des sources orientables permettent de déterminer la meilleure position face au cylindre 102. L'application de micro-ondes se fait à proximité du matériau souple 101 et à l'opposé de la surface du cylindre 102.According to Figure 1, a device 100 for the heat treatment of a flexible material 101 comprises at least one cylinder 102 rotated about an axis 103 and heated from the inside. The cylinder 102 is set in motion by a thermo-regulated motor, the temperature taken on the materials being effected by means of infrared probes installed on the wall of the enclosure 102. On this cylinder 102, the flexible material 101 flows. according to the invention comprises at least one microwave application module 104 placed near the cylinder. In FIG. 1, five microwave application modules 104 are shown. The role of these modules 104 is to apply microwaves to the flexible material 101 when it is circulating on the cylinder 102. They contain microwave sources, for example magnetrons of 800 watts, which are oriented towards the cylinder and can in this case be adjustable in order to obtain various kinds of treatment. In particular, orientable sources make it possible to determine the best position facing the cylinder 102. The microwave application is made close to the flexible material 101 and opposite the surface of the cylinder 102.
Afin de ne pas interagir avec les micro-ondes, le cylindre 102 n'a pas de propriétés magnétiques. De plus, lorsque l'invention est implémentée pour réaliser une teinture, il est utile que le cylindre 102 présente des propriétés d'oxydoréduction permettant d'éviter l'oxydation de la teinture. Ainsi le cylindre 102 est avantageusement réalisé en acier inoxydable. Le chauffage permet d'atteindre des températures de l'ordre de 2000C au moins. La forme cylindrique permet d'avoir une répartition homogène des ondes qui sont ainsi mises en mouvement de manière homogène. Le mouvement du cylindre 102 crée une dynamique au sein du champ de micro-ondes. La chaleur et le mouvement que réalise le cylindre permettent de maîtriser la distribution spatiale des sources de chaleur.In order not to interact with the microwaves, the cylinder 102 has no magnetic properties. In addition, when the invention is implemented to perform dyeing, it is useful for the cylinder 102 to have oxidation-reduction properties to prevent oxidation of the dye. Thus the cylinder 102 is advantageously made of stainless steel. The heating makes it possible to reach temperatures of the order of at least 200 ° C. The cylindrical shape makes it possible to have a homogeneous distribution of the waves which are thus set in motion in a homogeneous manner. The movement of the cylinder 102 creates a dynamic within the microwave field. The heat and the movement of the cylinder make it possible to control the spatial distribution of the heat sources.
Avantageusement, le cylindre 102 est revêtu d'une couche 105 d'un matériau de type connu sous la marque Téflon. Ce matériau est conducteur et transparent pour les micro-ondes : il permet ainsi que les micro-ondes traversent le tissu et la couche de Téflon, se réfléchissent sur le cylindre, par exemple en acier, et retraverse le Téflon et le tissu. Ainsi le tissu est traité sur les deux faces. Le téflon permet de modifier l'angle de traversée des micro-ondes et comme la forme est cylindrique cela est d'autant plus efficace. Ainsi, le téflon joue le rôle de répartiteur et de diffuseur des micro-ondes dans le tissu à traiter. Il présente de plus l'avantage d'avoir des propriétés de non adhérence et de ne pas s'oxyder. Par exemple, lorsqu'une teinture est réalisée à l'aide de l'invention, cela évite que la teinture ne colle au cylindre. Selon la réalisation présentée sur la figure 1, le dispositif 100 comprend une enceinte 107 en portion de cylindre, par exemple une enceinte serai cylindrique, dans laquelle est placée le cylindre 102. L'enceinte est par exemple réalisée en acier inoxydable. Dans cette enceinte 107 qui suit la forme du cylindre 102 sont représentés cinq modules d'application des micro-ondes 104.Advantageously, the cylinder 102 is coated with a layer 105 of a material of a type known as Teflon. This material is conductive and transparent for microwaves: it thus allows the microwaves to pass through the fabric and the Teflon layer, are reflected on the cylinder, for example steel, and crosses the Teflon and the fabric. Thus the fabric is treated on both sides. Teflon makes it possible to modify the angle of crossing of the microwaves and as the form is cylindrical this is all the more effective. Teflon thus plays the role of distributor and diffuser of microwaves in the tissue to be treated. It also has the advantage of having non-stick properties and not to oxidize. For example, when dyeing is carried out using the invention, this prevents the dye from sticking to the cylinder. According to the embodiment shown in FIG. 1, the device 100 comprises an enclosure 107 in a cylinder portion, for example a cylindrical enclosure, in which the cylinder 102 is placed. The enclosure is for example made of stainless steel. In this enclosure 107 which follows the shape of the cylinder 102 are shown five microwave application modules 104.
Le dispositif 100 peut inclure des guides 108, par exemple, ainsi que représenté sur la figure 1, deux petits cylindres de guidage, pour guider la circulation du matériau souple 101 sur le cylindre 102 de manière à ce que le matériau souple 101 enveloppe le cylindre 102. Les petits cylindres de guidage 108 sont avantageusement recouverts de ' téflon pour éviter les ondes réfléchies et la création d'un champ magnétique avec le cylindre principal 102. Selon une réalisation, le dispositif inclut des moyens informatiques, non représentés sur la figure, pour commander le chauffage d'au moins un cylindre 102 et les caractéristiques du mouvement du cylindre 102 à l'aide d'un programme d'ordinateur. Le programme d'ordinateur est stocké sur un support amovible, indépendant des moyens informatiques.The device 100 may include guides 108, for example, as shown in FIG. 1, two small guide rolls, for guiding the flow of the flexible material 101 over the roll 102 so that the flexible material 101 envelopes the roll 102. small guide rolls 108 are preferably covered with 'Teflon to prevent the reflected waves and the creation of a magnetic field with the main cylinder 102. in one embodiment, the device includes computer means, not shown in the figure, for controlling the heating of at least one cylinder 102 and the characteristics of the movement of the cylinder 102 by means of a computer program. The computer program is stored on a removable medium, independent of computer resources.
Selon une réalisation avantageuse de l'invention, le matériau souple est chauffé avant de passer dans l'enceinte 107 et sur le cylindre 102. Il peut par exemple recevoir une pulvérisation et/ou être passé dans un bain chauffé et/ou encore être passé dans une enceinte préalable 106 comprenant des sources de micro-ondes 109 qui chauffent le matériau souple. Ces sources sont par exemple des magnétrons de 1200 watts. Ainsi il est possibles de porter le matériau souple à une température où les micro-ondes sont connues être plus actives, à savoir aux alentours de 600C. Selon une réalisation particulière de l'invention présentée sur la figure 2, le dispositif 200 selon l'invention inclut une pluralité de cylindres 202, 212, 222, par exemple en acier inoxydable, en mouvement de rotation autour d'axes 203, 213, 223 et chauffés de l'intérieur sur lesquels circulent le matériau souple 201 et une pluralité de modules d'application de micro-ondes 204, 214, 224 pour appliquer des micro-ondes au matériau souple 201 lorsque celui-ci circule sur les cylindres 202, 212, 222. Avantageusement, la pluralité de cylindres 202, 212,According to an advantageous embodiment of the invention, the flexible material is heated before passing into the chamber 107 and the cylinder 102. It can for example receive a spray and / or be passed through a heated bath and / or be passed in a pre-enclosure 106 comprising microwave sources 109 which heat the flexible material. These sources are for example magnetrons of 1200 watts. Thus it is possible to bring the flexible material to a temperature where the microwaves are known to be more active, namely around 60 0 C. According to a particular embodiment of the invention presented in FIG. 2, the device 200 according to the invention includes a plurality of cylinders 202, 212, 222, for example made of stainless steel, rotating about axes 203, 213, 223 and heated from the inside on which the flexible material 201 and a plurality of microwave application modules 204, 214, 224 circulate for applying microwaves to the flexible material 201 when it is circulating on the cylinders 202. , 212, 222. Advantageously, the plurality of cylinders 202, 212,
222 est chauffée à une pluralité de températures de manière à permettre un traitement thermique modulable du matériau souple 201. Les vitesses de passage sur les cylindres peuvent aussi être réglées. Toutes ces données sur les caractéristiques de mises en œuvre du procédé sont avantageusement stockées sur un support informatique amovible destiné à être lu par des moyens informatiques en liaison avec le dispositif selon l'invention afin de commander celui-ci selon les besoins spécifiques du traitement thermique. Le dispositif représenté sur la figure 2 permet de travailler à trois températures différentes. Des améliorations mécaniques à la portée de l'homme du métier peuvent permettre de réguler la vitesse du matériau souple sur ces cylindres et à ces températures.222 is heated to a plurality of temperatures so as to allow a flexible heat treatment of the flexible material 201. The speeds of passage on the cylinders can also be adjusted. All these data on the implementation characteristics of the method are advantageously stored on a removable computer medium intended to be read by computer means in connection with the device according to the invention in order to control it according to the specific needs of the heat treatment. . The device shown in FIG. 2 makes it possible to work at three different temperatures. Mechanical improvements within the reach of those skilled in the art can be used to regulate the speed of the flexible material on these cylinders and at these temperatures.
Avantageusement, les différents dispositifs de traitement ci-dessus décrits, notamment par trempage dans un bain ou par pulvérisation, sont installés entre les cylindres de la pluralité de cylindres 202, 212.Advantageously, the various treatment devices described above, in particular by dipping in a bath or by spraying, are installed between the cylinders of the plurality of cylinders 202, 212.
L'application du procédé selon l'invention à divers matériaux souples a montré que les tests de résistance des fibres traités ont fait apparaître une résistance supérieure à celle obtenue avec des procédés traditionnels où de multiples traitements chimiques agressifs pour le matériau et pour sa structure sont généralement nécessaires.The application of the method according to the invention to various soft materials has shown that the strength tests of the treated fibers have shown a higher resistance than that obtained with traditional methods where multiple aggressive chemical treatments for the material and for its structure are usually necessary.
L'invention n'est pas limitée aux modes de réalisation décrits et l'homme du métier reconnaîtra l'existence de diverses variantes de réalisation comme, par exemple, de multiples configurations géométriques des cylindres ou encore la possibilité de mettre en œuvre des cylindres ne comportant pas de Téflon dans le cas du traitement de matériaux épais tels que les tapis dont le traitement thermique n'est appliqué qu'à l'une des deux faces. The invention is not limited to the embodiments described and those skilled in the art will recognize the existence of various embodiments such as, for example, multiple geometrical configurations of the cylinders or the possibility of implementing cylinders without Teflon in the case of the treatment of thick materials such as carpets whose heat treatment is applied only 'to one of the two faces.

Claims

l'REVENDICATIONS the CLAIMS
1. Procédé de traitement thermique d'un matériau souple comprenant au moins une étape de circulation du matériau souple sur un cylindre principal en mouvement de rotation, cette étape étant simultanée à une étape d'application de micro-ondes à proximité du matériau souple et à l'opposé de la surface du cylindre, l'application des micro-ondes étant telle que les ondes sont mises en mouvement, de préférence de façon homogène.1. A method of heat treatment of a flexible material comprising at least one step of circulation of the flexible material on a main cylinder in rotational movement, this step being simultaneous with a microwaving step in the vicinity of the flexible material and opposite the surface of the cylinder, the application of microwaves being such that the waves are set in motion, preferably in a homogeneous manner.
2. Procédé selon la revendication 1 dans lequel le cylindre principal est chauffé de l'intérieur.2. The method of claim 1 wherein the main cylinder is heated from the inside.
3. Procédé selon la revendication 1 ou 2 dans lequel le matériau constitutif du cylindre principal est un matériau, tel que l'acier, permettant de réfléchir les micro-ondes.3. Method according to claim 1 or 2 wherein the constituent material of the main cylinder is a material, such as steel, for reflecting microwaves.
4. Procédé selon la revendication 3 dans lequel le cylindre principal est revêtu d'une couche d'un matériau, tel que le matériau connu sous la marque TEFLON, transparent aux micro-ondes.4. The method of claim 3 wherein the main cylinder is coated with a layer of a material, such as the material known under the trademark TEFLON, transparent to microwaves.
5. Procédé selon l'une des revendications précédentes dans lequel on prévoit des cylindres de guidage pour guider la circulation du matériau souple sur le cylindre principal afin que le matériau souple enveloppe ce cylindre principal en rotation, ces cylindres de guidage étant tels qu'ils évitent la création d'un champ magnétique avec le cylindre principal.5. Method according to one of the preceding claims wherein there are provided guide cylinders for guiding the flow of the flexible material on the main cylinder so that the flexible material envelops the main cylinder in rotation, these guide rolls being such that they avoid the creation of a magnetic field with the main cylinder.
6. Procédé selon l'une des revendications 1 à 5, mis en œuvre dans une enceinte en portion de cylindre.6. Method according to one of claims 1 to 5, implemented in a chamber in cylinder portion.
7. Procédé selon la revendication 6, dans lequel l'enceinte comprend une antenne tournante à vitesse variable destinée à éliminer des micro-ondes stationnaires à l'intérieur de enceinte. The method of claim 6, wherein the enclosure comprises a variable speed rotating antenna for removing stationary microwaves within the enclosure.
8. Procédé selon l'une des revendications précédentes, dans lequel l'étape d'application de micro-ondes est réalisée à l'aide de sources micro-ondes orientables.8. Method according to one of the preceding claims, wherein the step of applying microwaves is carried out using orientable microwave sources.
9. Procédé selon l'une des revendications précédentes, incluant une étape préalable de chauffage du matériau souple.9. Method according to one of the preceding claims, including a prior step of heating the flexible material.
10. Procédé selon l'une quelconque des revendications précédentes, dans lequel une pluralité d'étapes de circulation du matériau souple est réalisée sur une pluralité de cylindres principaux en mouvement de rotation, ces étapes étant réalisées simultanément à une étape d' application de micro-ondes.10. A method according to any one of the preceding claims, wherein a plurality of flow stages of the flexible material is performed on a plurality of main cylinders in rotational movement, these steps being performed simultaneously to a micro application step. -ondes.
11. Procédé selon la revendication 10, dans lequel la pluralité de cylindres est chauffée à une pluralité de températures de manière à permettre un traitement thermique modulable du matériau souple.The method of claim 10, wherein the plurality of cylinders is heated at a plurality of temperatures to provide a flexible heat treatment of the flexible material.
12. Procédé selon l'une des revendications précédentes, dans lequel le chauffage d'au moins un cylindre et les caractéristiques du mouvement du cylindre sont commandés à l'aide d'un programme d'ordinateur.Method according to one of the preceding claims, wherein the heating of at least one cylinder and the characteristics of the movement of the cylinder are controlled by means of a computer program.
13. Procédé selon la revendication 12, dans lequel le programme d'ordinateur est stocké sur un support amovible. The method of claim 12, wherein the computer program is stored on a removable medium.
PCT/FR2005/050672 2004-08-19 2005-08-16 Method and device for heat treatment of a flexible material WO2006021732A2 (en)

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FR0451871A FR2874473B1 (en) 2004-08-19 2004-08-19 METHOD AND DEVICE FOR THERMALLY PROCESSING FLEXIBLE MATERIAL

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WO2006021732A3 (en) 2006-08-10
EP2852252A1 (en) 2015-03-25
FR2874473A1 (en) 2006-02-24

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