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EP0792591A1 - Thermobonded lining material and method for its manufacture - Google Patents

Thermobonded lining material and method for its manufacture Download PDF

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Publication number
EP0792591A1
EP0792591A1 EP97400403A EP97400403A EP0792591A1 EP 0792591 A1 EP0792591 A1 EP 0792591A1 EP 97400403 A EP97400403 A EP 97400403A EP 97400403 A EP97400403 A EP 97400403A EP 0792591 A1 EP0792591 A1 EP 0792591A1
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EP
European Patent Office
Prior art keywords
particles
fusible
polymers
support
transfer
Prior art date
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Granted
Application number
EP97400403A
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German (de)
French (fr)
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EP0792591B1 (en
Inventor
Pierrot Groshens
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Lainiere de Picardie SA
Lainiere de Picardie BC SAS
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Lainiere de Picardie SA
Lainiere de Picardie BC SAS
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    • A—HUMAN NECESSITIES
    • A41—WEARING APPAREL
    • A41D—OUTERWEAR; PROTECTIVE GARMENTS; ACCESSORIES
    • A41D27/00—Details of garments or of their making
    • A41D27/02—Linings
    • A41D27/06—Stiffening-pieces
    • 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
    • D06M17/00—Producing multi-layer textile fabrics
    • D06M17/04—Producing multi-layer textile fabrics by applying synthetic resins as adhesives

Definitions

  • the invention relates to a fusible interlining and its manufacturing process.
  • fusible interlining comprising a textile support on which is deposited, by coating, a layer of thermo-adhesive polymers distributed in points.
  • linings are specifically intended to be laminated on another textile, for example a drapery, so as to constitute a complex whose physical properties, behavior, nervousness, flexibility, touch, volume, hand, ... can be controlled.
  • thermo-adhesive layer These properties of the complex result from the nature of the drapery, from the nature of the textile support, from the interlining, and also from the nature of the composition and of the mode of application of the thermo-adhesive layer.
  • the fusible interfacing After being manufactured, the fusible interfacing must be able to withstand storage at room temperature. It is therefore necessary that the different layers of this product, generally stored in rolls, do not adhere with each other.
  • the fusible interfacing must not have a tacky effect and adhesive properties at room temperature (“tack").
  • the fusible interlining is subsequently laminated to the draperies so as to obtain the desired complex.
  • this lamination is carried out using a press operating at temperatures between 90 ° C and 160 ° C, under pressures of a few decibars to a few bars, for relatively short times, of the order of 10 to 30 seconds.
  • thermo-adhesive polymers of the interlining must at least partially regain their adhesion properties.
  • thermo-adhesive or fusible polymers from piercing the drapery or producing returns, that is to say piercing the textile support of the interlining.
  • all fusible interlining is provided so as not to have piercings on the drapery side.
  • document FR-A-2 177 038 has proposed making a covering by successively depositing two layers of adhesive on a textile support.
  • the first layer is produced by coating a viscous dispersion (paste) containing polymers with high viscosity and / or high melting point higher than that of the temperature necessary for heat sealing, directly on the textile support by means of a frame screen printing.
  • the second layer is produced by dusting a powder of heat-bonding polymers with viscosity and / or melting point lower than those of the first layer.
  • thermo-adhesive material dispersed in the form of a fine powder above the coated textile support is deposited by gravity on the whole of the support, but adheres more firmly to the dough point.
  • thermo-adhesive layer having a higher melting point than those of the thermo-adhesive layer thus form a screen, the adhesive theoretically does not flow through the textile support when the interlining is laminated to a drapery.
  • thermo-adhesive material stick to the entire surface of the dough point, in particular at the point of contact between the dough point and the textile support; with the consequence that the thermo-adhesive material present at the point of contact flows through the textile support without the underlayer being able to act as a screen during laminating, bushings then appearing.
  • the sub-layer penetrates more or less into the textile support, during direct coating, because of its irregular surface.
  • the adhesive surface of the underlay is variable, and, consequently, the quantity of particles also, with harmful consequences on the forces of adhesion between the interlining and the drapery, and particularly on the inhomogeneity of these adhesion forces.
  • a first object of the present invention is to provide fusible interlining and its manufacturing process which overcomes the limits or drawbacks of those known from the prior art.
  • an object of the present invention is to provide a fusible interlining with which the thermo-adhesive material does not creep through the textile support when it is applied to a drapery.
  • Another object of the present invention is to provide a fusible interfacing and its manufacturing process in which the adhesive is not in contact with the textile support, but only with the upper part of the underlay.
  • the transfer medium can be a cylinder or an endless belt.
  • the particles of fusible polymers are applied by dusting and then the polymer particles which are not in direct contact with the points of the undercoat are aspirated.
  • the invention also provides a fusible interlining characterized in that it is obtained by the implementation of the method according to the invention.
  • a fusible interlining 1 is produced which comprises a textile support 2 comprising on one of its external faces points 3 of thermo-adhesive polymers.
  • the textile support 2 can be known per se. It is of the same nature as those conventionally used in the field of interlining.
  • the polymer sublayer 5 is first of all deposited in the form of a paste or of dispersion in a solvent such as water in the form of points distributed on a transfer support 6, 7, plane or convex and with a regular and smooth surface.
  • a solvent such as water
  • the melting point of these polymers is higher than the heat-bonding temperature and therefore above the melting point of fusible polymers.
  • the transfer support 6, 7 can be a cylinder 6 or else a transfer mat 7, which preferably forms a closed loop, circulating on transport cylinders 8a, 8b.
  • This under-layer forming a screen is carried out by means of a screen printing frame 4.
  • This rotary frame in itself known, cooperates with a doctor blade 4a, on the one hand, and with a counter-cylinder. which, as the case may be, is the transfer cylinder 6 or the transport cylinder 8a of the transfer belt 7.
  • the axes of the screen printing frame 4 and of the transfer cylinder 6 or of the transport cylinder 8a are mutually parallel and perpendicular to the direction of travel of the textile support 2.
  • the screen printing frame 4 allows the implementation of coating processes in the form of paste or in dispersion in a solvent such as water.
  • the composition of the sub-layer 5 is variable depending on the applications.
  • finely ground materials are used whose melting point is higher than that of the fusible particles 10, for example polyethylenes.
  • chemically reactive materials are used so that their reactivity brings them to a fuse also greater than the fusible particles 10, such as aminoplast resins, acrylics, and urethane-acrylate resins, polyurethane resins, epoxy resins.
  • This paste is then deposited on the transfer cylinder 6 or the transfer mat 7 and then undergoes transformations aimed at transforming the solvent in whole or in part, and / or in melting the finely ground polymer or in activating by radiation sensitive polymers radiation sources (such as UV, EB, ).
  • This pretreatment 16 of the sub-layer 6, prior to its transfer, allows it to be more homogeneous, more coherent so as to facilitate its transfer.
  • the next step consists in transferring the network of points of the sublayer 5 on the textile support 2.
  • the textile support 2 is pressed, according to the embodiment shown in FIG. 1, between the transfer cylinder 6 and a back pressure cylinder 9; and according to the embodiment shown in FIG. 2, the textile support 2 is pressed between the transport cylinder 8b of the transfer belt 7 and the back-pressure cylinder 9.
  • the transfer support 6, 7 is tangent respectively to the screen printing frame 4 in a zone 14 and to the textile support 2 in a zone 15, said zones 14, 15 being in the same plane or in parallel planes.
  • the plane or planes containing the axes of rotation of the screen printing frame 4, of the transfer cylinder 6 or of the transfer belt 7, and of the back-pressure cylinder 9 are perpendicular to the plane of the textile support 2.
  • the textile support 2 is tangent to each of the two cylinders 6, 9 or 8b, 9 between which it scrolls, in the zone 15.
  • the points of the sublayer 5 thus transferred have a flat surface and a small thickness and are arranged on the surface of the textile support 2. On the other hand, their surface is adhesive.
  • a device then makes it possible to disperse the particles of fusible polymers 10 on the textile support 2 coated with the sublayer 5. In this way, the particles 10 adhere to the surface of the points of the adhesive sublayer 5.
  • These fusible polymer particles 10 can be polyamide or polyester particles whose particle size is between 60 ⁇ m and 200 ⁇ m. The latter stick to the flat surface of the points of the transferred sublayer 5, on the one hand, the other remaining in contact but not adhering to the surface of the textile support 2.
  • the assembly In order to rid the textile support 2 of the excess particles 10, and keep only the particles 10 bonded to the flat surface of the points of the underlay 5, the assembly is subjected to a vacuum 11 and to a violent threshing .
  • the textile support 2 coated with dots 3 of fusible polymers then passes through a heating and / or radiation enclosure 12 in order in particular to evaporate the solvent contained in the underlayer 5 if necessary, to transform the latter so that its point of is greater than the thermo-adhesive material 10 and to melt the thermo-adhesive particles 10.
  • the invention also relates to a fusible interlining 1 obtained by the implementation of the process which has just been described.
  • the advantageous properties of the fusible interlining 1 come from the special arrangement particles of fusible polymers 10 with respect to the sublayer 5.
  • the latter completely shields the fusible particles 10. That is to say that these particles 10 are not in contact with the textile support 2, but only with the upper part of the thin and perfectly flat underlay 5 (FIG. 3). Consequently, when the interlining 1 is laminated to a drapery, the fusible particles 10 do not flow, under the effect of temperature and pressure, in the textile support 2 since the underlayer coincides exactly with the points of fusible particles 10.
  • thermo-adhesive substance 10 could creep through the textile support 2 at the level of the creep zones 17. While this possibility does not exist for the fusible interlining 1 according to the invention, because the under- layers is transferred.

Landscapes

  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Manufacturing Of Multi-Layer Textile Fabrics (AREA)
  • Details Of Garments (AREA)
  • Chemical Or Physical Treatment Of Fibers (AREA)
  • Treatments For Attaching Organic Compounds To Fibrous Goods (AREA)
  • Laminated Bodies (AREA)
  • Screen Printers (AREA)
  • Woven Fabrics (AREA)
  • Lining Or Joining Of Plastics Or The Like (AREA)
  • Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
  • Adhesives Or Adhesive Processes (AREA)

Abstract

Manufacturing fabric which becomes tacky on heating (1 in fig.), in which a textile base (2) is coated with a point arrangement of tacky polymer particles (3), comprises: (i) using a silk-screen printing frame (4) to place, on a transfer support with a smooth regular surface, an underlayer (5) of polymers, in paste form or in suspension in a solvent, whose melting point is greater than the temperature at which the material becomes tacky (Tt); (ii) transferring the particles obtained to the textile base (2); applying tacky polymer particles (10) to the underlayer (5); and (iii) rolling off the fabric thus obtained (1) in a heat and/or irradiation enclosure which ensures crosslinking and/or acceptable fusion of the paste or dispersion. Preferably tacky polymer particles (10) are sprinkled onto the top of the underlayer (5). The transfer support (6) is a continuous cylindrical belt tangential to the silk screen (4) and the base material (2). Underlayer particles are chosen from polymers with melting points higher than Tt, such as polyethylene, aminoplastic mixtures, acrylic resins, aminoplastic resins, and polyurethanes. Tacky polymer has granular size 60-200 mu m and is selected from polyamides, polyesters, polyurethanes, and polyethylene.

Description

L'invention concerne un entoilage thermocollant et son procédé de fabrication.The invention relates to a fusible interlining and its manufacturing process.

Il est connu de réaliser des entoilages thermocollants comprenant un support textile sur lequel est déposée, par enduction, une couche de polymères thermo-adhésifs répartie en points.It is known to produce fusible interlining comprising a textile support on which is deposited, by coating, a layer of thermo-adhesive polymers distributed in points.

Ces entoilages sont spécifiquement destinés à être contrecollés sur un autre textile, par exemple une draperie, de manière à constituer un complexe dont les propriétés physiques, tenue, nervosité, souplesse, toucher, volume, main, ... peuvent être maîtrisées.These linings are specifically intended to be laminated on another textile, for example a drapery, so as to constitute a complex whose physical properties, behavior, nervousness, flexibility, touch, volume, hand, ... can be controlled.

Ces propriétés du complexe résultent de la nature de la draperie, de la nature du support textile, de l'entoilage, et aussi, de la nature de la composition et du mode d'application de la couche thermo-adhésive.These properties of the complex result from the nature of the drapery, from the nature of the textile support, from the interlining, and also from the nature of the composition and of the mode of application of the thermo-adhesive layer.

Après avoir été fabriqué, l'entoilage thermocollant doit pouvoir supporter un stockage à température ambiante. Il est alors nécessaire que les différentes couches de ce produit, généralement stocké en rouleaux, n'adhèrent pas les unes avec les autres. L'entoilage thermocollant ne doit pas présenter un effet poisseux et des propriétés adhésives à température ambiante ("tack").After being manufactured, the fusible interfacing must be able to withstand storage at room temperature. It is therefore necessary that the different layers of this product, generally stored in rolls, do not adhere with each other. The fusible interfacing must not have a tacky effect and adhesive properties at room temperature ("tack").

L'entoilage thermocollant est ultérieurement contrecollé sur les draperies de manière à obtenir le complexe recherché.The fusible interlining is subsequently laminated to the draperies so as to obtain the desired complex.

Le plus souvent, ce contrecollage est réalisé à l'aide d'une presse fonctionnant à des températures comprises entre 90°C et 160°C, sous des pressions de quelques décibars à quelques bars, pendant des temps relativement courts, de l'ordre de 10 à 30 secondes.Most often, this lamination is carried out using a press operating at temperatures between 90 ° C and 160 ° C, under pressures of a few decibars to a few bars, for relatively short times, of the order of 10 to 30 seconds.

Au cours de cette phase, les polymères thermo-adhésifs de l'entoilage doivent au moins partiellement retrouver leurs propriétés d'adhésion.During this phase, the thermo-adhesive polymers of the interlining must at least partially regain their adhesion properties.

Egalement au cours de cette opération, il faut éviter que ces polymères thermo-adhésifs ou thermocollants ne transpercent la draperie ou ne produisent des retours, c'est-à-dire transpercent le support textile de l'entoilage. Mais aujourd'hui, tous les entoilages thermocollants sont prévus pour ne pas avoir de transpercements côté draperie.Also during this operation, it is necessary to prevent these thermo-adhesive or fusible polymers from piercing the drapery or producing returns, that is to say piercing the textile support of the interlining. But today, all fusible interlining is provided so as not to have piercings on the drapery side.

En effet, de tels transpercements et retours produiraient un effet inesthétique, en rendant l'entoilage impropre à l'utilisation ou, pour le moins, donneraient au complexe des propriétés néfastes contraires à celles recherchées.Indeed, such piercing and returns would produce an unsightly effect, making the stabilizer unfit for use or, at the very least, would give the complex harmful properties contrary to those sought.

Ces transpercements ont essentiellement pour conséquences :

  • de provoquer la migration d'une partie des polymères thermoadhésifs sur la face opposée à celle initialement thermocollante du textile entoilage.
The main consequences of these piercings are:
  • to cause the migration of part of the thermoadhesive polymers on the face opposite to that initially fusible of the interlining textile.

Ce phénomène a pour effet négatif de faire adhérer l'envers de l'entoilage thermocollant sur le textile de doublage (la doublure, revers, etc...) au cours de l'opération de repassage, pressage du vêtement.

  • du fait de la pénétration des polymères dans le support textile, de le rigidifier par le collage des fibres et/ou des fils entre-eux.
This phenomenon has the negative effect of causing the backing of the fusible interlining to adhere to the lining textile (the lining, lapel, etc.) during the ironing and pressing operation of the garment.
  • due to the penetration of the polymers into the textile support, to stiffen it by the bonding of the fibers and / or the threads therebetween.

Dès l'origine de l'utilisation de l'entoilage thermocollant, les phénomènes de traversée et retour ont été constatés et de nombreuses tentatives ont été faites depuis pour éviter ces défauts.From the origin of the use of fusible interfacing, the phenomena of crossing and return have been noted and many attempts have been made since to avoid these defects.

Ainsi, le document FR-A-2 177 038 a proposé de réaliser un entoilage en déposant successivement deux couches d'adhésif sur un support textile. La première couche est réalisée par enduction d'une dispersion visqueuse (pâte) contenant des polymères à haute viscosité et/ou à haut point de fusion supérieur à celui de la température nécessaire au thermocollage, directement sur le support textile au moyen d'un cadre d'impression sérigraphique.Thus, document FR-A-2 177 038 has proposed making a covering by successively depositing two layers of adhesive on a textile support. The first layer is produced by coating a viscous dispersion (paste) containing polymers with high viscosity and / or high melting point higher than that of the temperature necessary for heat sealing, directly on the textile support by means of a frame screen printing.

La deuxième couche est réalisée par saupoudrage d'une poudre de polymères thermocollants de viscosité et/ou de point de fusion inférieurs à ceux de la première couche.The second layer is produced by dusting a powder of heat-bonding polymers with viscosity and / or melting point lower than those of the first layer.

Les points de pâte de la première couche, du fait de la nature et de la composition des composés la constituant, ont leur surface adhésive jusqu'à la phase ultérieure de séchage. Ainsi, le matériau thermo-adhésif dispersé sous forme de poudre fine au-dessus du support textile enduit se dépose par gravité sur l'ensemble du support, mais adhère plus solidement au point de pâte.The dots of the first layer, due to the nature and composition of the constituent compounds, have their adhesive surface until the subsequent drying phase. Thus, the thermo-adhesive material dispersed in the form of a fine powder above the coated textile support is deposited by gravity on the whole of the support, but adheres more firmly to the dough point.

Les matériaux utilisés pour la sous-couche ayant un point de fusion supérieur à ceux de la couche thermo-adhésive forme ainsi un écran, l'adhésif ne flue théoriquement pas à travers le support textile lorsque l'entoilage est contrecollé à une draperie.The materials used for the sub-layer having a higher melting point than those of the thermo-adhesive layer thus form a screen, the adhesive theoretically does not flow through the textile support when the interlining is laminated to a drapery.

Toutefois, les points de la sous-couche étant de forme sphérique ou ellipsoïdale, les particules de matériau thermo-adhésif se collent sur toute la surface du point de pâte, notamment au point de contact entre le point de pâte et le support textile ; avec pour conséquence que le matériau thermo-adhésif présent au point de contact flue à travers le support textile sans que la sous-couche puisse faire écran lors du contrecollage, des traversées apparaissant alors.However, the points of the sublayer being spherical or ellipsoidal in shape, the particles of thermo-adhesive material stick to the entire surface of the dough point, in particular at the point of contact between the dough point and the textile support; with the consequence that the thermo-adhesive material present at the point of contact flows through the textile support without the underlayer being able to act as a screen during laminating, bushings then appearing.

D'autre part, la sous-couche pénètre plus ou moins dans le support textile, lors de l'enduction directe, du fait de sa surface irrégulière. Ainsi, la surface adhésive de la sous-couche est variable, et, par conséquent, la quantité de particules également, avec des conséquences néfastes sur les forces d'adhésion entre l'entoilage et la draperie, et particulièrement sur l'inhomogénéité de ces forces d'adhésion.On the other hand, the sub-layer penetrates more or less into the textile support, during direct coating, because of its irregular surface. Thus, the adhesive surface of the underlay is variable, and, consequently, the quantity of particles also, with harmful consequences on the forces of adhesion between the interlining and the drapery, and particularly on the inhomogeneity of these adhesion forces.

Un premier objet de la présente invention est de proposer en entoilage thermocollant et son procédé de fabrication qui pallie les limites ou les inconvénients de ceux connus de l'état de la technique.A first object of the present invention is to provide fusible interlining and its manufacturing process which overcomes the limits or drawbacks of those known from the prior art.

Plus particulièrement, un objet de la présente invention est de proposer un entoilage thermocollant avec lequel la matière thermo-adhésive ne flue pas à travers le support textile lors de son application sur une draperie.More particularly, an object of the present invention is to provide a fusible interlining with which the thermo-adhesive material does not creep through the textile support when it is applied to a drapery.

Un autre objet de la présente invention est de proposer un entoilage thermocollant et son procédé de fabrication dans lequel l'adhésif n'est pas en contact avec le support textile, mais uniquement avec la partie supérieure de la sous-couche.Another object of the present invention is to provide a fusible interfacing and its manufacturing process in which the adhesive is not in contact with the textile support, but only with the upper part of the underlay.

A cet effet, l'invention concerne tout d'abord un procédé de fabrication d'un entoilage thermocollant dans lequel un support textile reçoit une enduction de polymères thermocollants répartis en points, caractérisé en ce que successivement :

  • on dépose, au moyen d'un cadre d'impression sérigraphique sur un support de transfert comportant une surface régulière et lisse, une sous-couche de polymères en pâte réticulable ou en dispersion dans un solvant dont le point de fusion est supérieur à une température de thermocollage prédéterminée ;
  • on transfère les points de surface plane ainsi obtenus sur le support textile ;
  • on applique des particules de polymères thermocollants sur la sous-couche ;
  • on fait défiler l'entoilage thermocollant ainsi obtenu dans une enceinte de chauffage et/ou de rayonnement, de manière à assurer la réticulation et/ou la mise en fusion de la pâte ou de la dispersion.
To this end, the invention relates first of all to a process for manufacturing a fusible interlining in which a textile support receives a coating of fusible polymers distributed in points, characterized in that successively:
  • a sublayer of polymers in crosslinkable paste or in dispersion in a solvent whose melting point is higher than a temperature is deposited, by means of a screen printing frame on a transfer support comprising a regular and smooth surface predetermined heat sealing;
  • the points of flat surface thus obtained are transferred to the textile support;
  • particles of fusible polymers are applied to the undercoat;
  • the fusible interlining thus obtained is passed through a heating and / or radiation enclosure, so as to crosslink and / or melt the paste or the dispersion.

Le support de transfert peut être un cylindre ou un tapis sans fin.The transfer medium can be a cylinder or an endless belt.

Selon un mode de réalisation, on applique les particules de polymères thermocollants par saupoudrage puis on aspire les particules de polymères n'étant pas en contact direct avec les points de la sous-couche.According to one embodiment, the particles of fusible polymers are applied by dusting and then the polymer particles which are not in direct contact with the points of the undercoat are aspirated.

Selon un autre aspect, l'invention propose également un entoilage thermocollant caractérisé en ce qu'il est obtenu par la mise en oeuvre du procédé conforme à l'invention.According to another aspect, the invention also provides a fusible interlining characterized in that it is obtained by the implementation of the method according to the invention.

D'autres caractéristiques et avantages de la présente invention apparaîtront clairement à la lecture de la description qui suit faite en référence aux dessins annexés dans lesquels :

  • la figure 1 est une vue schématique d'un dispositif illustrant le procédé de fabrication d'un entoilage selon l'invention ;
  • la figure 2 est une vue schématique d'un autre mode de réalisation du dispositif illustrant le procédé de fabrication d'un entoilage selon l'invention ;
  • la figure 3 est une vue schématique, en coupe transversale, d'un entoilage thermocollant obtenu par la mise en oeuvre d'un procédé de fabrication conforme à l'invention ;
  • la figure 4 est une vue schématique, en coupe transversale, d'un entoilage thermocollant de l'état de la technique.
Other characteristics and advantages of the present invention will appear clearly on reading the description which follows, made with reference to the appended drawings in which:
  • Figure 1 is a schematic view of a device illustrating the method of manufacturing a stabilizer according to the invention;
  • Figure 2 is a schematic view of another embodiment of the device illustrating the method of manufacturing a stabilizer according to the invention;
  • Figure 3 is a schematic view, in cross section, of a fusible interfacing obtained by the implementation of a manufacturing process according to the invention;
  • Figure 4 is a schematic view, in cross section, of a fusible interfacing of the prior art.

Selon l'invention, on fabrique un entoilage thermocollant 1 qui comprend un support textile 2 comportant sur une de ses faces externes des points 3 de polymères thermo-adhésifs.According to the invention, a fusible interlining 1 is produced which comprises a textile support 2 comprising on one of its external faces points 3 of thermo-adhesive polymers.

Le support textile 2 peut être connu en soi. Il est de même nature que ceux conventionnellement mis en oeuvre dans le domaine de l'entoilage.The textile support 2 can be known per se. It is of the same nature as those conventionally used in the field of interlining.

Il peut s'agir d'un textile tissé ou tricoté ou d'un non-tissé. Le plus souvent, ces textiles sont transformés, puis soumis à des opérations de finissage avant d'être utilisés comme support d'enduction.It can be a woven or knitted fabric or a nonwoven. Most often, these textiles are transformed, then subjected to finishing operations before being used as a coating support.

Deux couches d'enduction de polymères réparties en points 5, 10 sont successivement appliquées sur le support textile 2.Two layers of polymer coating distributed in points 5, 10 are successively applied to the textile support 2.

A cet effet, on dépose tout d'abord la sous-couche 5 de polymères sous forme de pâte ou de dispersion dans un solvant tel que l'eau sous forme de points répartis sur un support de transfert 6, 7, plan ou convexe et comportant une surface régulière et lisse. Le point de fusion de ces polymères est supérieur à la température du thermocollage et donc au point de fusion des polymères thermocollants.To this end, the polymer sublayer 5 is first of all deposited in the form of a paste or of dispersion in a solvent such as water in the form of points distributed on a transfer support 6, 7, plane or convex and with a regular and smooth surface. The melting point of these polymers is higher than the heat-bonding temperature and therefore above the melting point of fusible polymers.

Le support de transfert 6, 7 peut être un cylindre 6 ou bien un tapis de transfert 7, qui forme de préférence une boucle fermée, circulant sur des cylindres de transport 8a, 8b.The transfer support 6, 7 can be a cylinder 6 or else a transfer mat 7, which preferably forms a closed loop, circulating on transport cylinders 8a, 8b.

Le dépôt de cette sous-couche formant écran est effectué au moyen d'un cadre d'impression sérigraphique 4. Ce cadre rotatif, en lui-même connu, coopère avec une racle 4a, d'une part, et avec un contre-cylindre qui, selon le cas, est le cylindre de transfert 6 ou le cylindre de transport 8a du tapis de transfert 7.The deposition of this under-layer forming a screen is carried out by means of a screen printing frame 4. This rotary frame, in itself known, cooperates with a doctor blade 4a, on the one hand, and with a counter-cylinder. which, as the case may be, is the transfer cylinder 6 or the transport cylinder 8a of the transfer belt 7.

Les axes du cadre sérigraphique 4 et du cylindre de transfert 6 ou du cylindre de transport 8a sont parallèles entre eux et perpendiculaires à la direction de défilement du support textile 2.The axes of the screen printing frame 4 and of the transfer cylinder 6 or of the transport cylinder 8a are mutually parallel and perpendicular to the direction of travel of the textile support 2.

Le cadre sérigraphique 4 permet la mise en oeuvre de procédés d'enduction sous forme de pâte ou en dispersion dans un solvant tel que l'eau.The screen printing frame 4 allows the implementation of coating processes in the form of paste or in dispersion in a solvent such as water.

Dans le cas des procédés d'enduction par voie humide des poudres très fines de polymères, en dispersion aqueuse, sont appliquées sur le support par une racle creuse installée à l'intérieur du cylindre rotatif qui a une paroi mince perforée. La racle 4a produit le passage de la pâte à travers les ouvertures du cylindre sérigraphique 4.In the case of wet coating processes, very fine powders of polymers, in aqueous dispersion, are applied to the support by a hollow scraper installed inside the rotary cylinder which has a thin perforated wall. The doctor blade 4a passes the dough through the openings of the screen printing cylinder 4.

La composition de la sous-couche 5 est variable selon les applications. Dans certains cas, on utilise des matériaux finement broyés dont le point de fusion est supérieur à celui des particules thermocollantes 10, par exemple les polyéthylènes. Dans d'autres cas, on utilise des matières réactives chimiquement afin que leur réactivité les porte à une fusibilité également supérieure aux particules thermocollantes 10, tels que résines aminoplastes, acryliques, et les résines uréthanes-acrylates, les résines polyuréthannes, époxydiques.The composition of the sub-layer 5 is variable depending on the applications. In certain cases, finely ground materials are used whose melting point is higher than that of the fusible particles 10, for example polyethylenes. In other cases, chemically reactive materials are used so that their reactivity brings them to a fuse also greater than the fusible particles 10, such as aminoplast resins, acrylics, and urethane-acrylate resins, polyurethane resins, epoxy resins.

Afin de réaliser une pâte d'enduction avec ces polymères, on les utilise finement broyés en dispersion dans de l'eau. Pour obtenir un état pâteux de ce mélange, on ajoute éventuellement des épaississants.In order to make a coating paste with these polymers, they are used finely ground in dispersion in water. To obtain a pasty state of this mixture, thickeners are optionally added.

Cette pâte est alors déposée sur le cylindre de transfert 6 ou le tapis de transfert 7 et subit ensuite des transformations visant à transformer le solvant en tout ou partie, et/ou mettre en fusion le polymère finement broyé ou à activer par rayonnements des polymères sensibles à des sources de rayonnement (tels que U.V., E.B.,...). Ce prétraitement 16 de la sous-couche 6, préalablement à son transfert, lui permet d'être plus homogène, plus cohérente de manière à faciliter son transfert.This paste is then deposited on the transfer cylinder 6 or the transfer mat 7 and then undergoes transformations aimed at transforming the solvent in whole or in part, and / or in melting the finely ground polymer or in activating by radiation sensitive polymers radiation sources (such as UV, EB, ...). This pretreatment 16 of the sub-layer 6, prior to its transfer, allows it to be more homogeneous, more coherent so as to facilitate its transfer.

L'étape suivante consiste à transférer le réseau de points de la sous-couche 5 sur le support textile 2. Pour permettre le transfert, le support textile 2 est pressé, selon le mode de réalisation représenté à la figure 1 entre le cylindre de transfert 6 et un cylindre de contre-pression 9 ; et selon le mode de réalisation représenté à la figure 2, le support textile 2 est pressé entre le cylindre de transport 8b du tapis de transfert 7 et le cylindre de contre-pression 9.The next step consists in transferring the network of points of the sublayer 5 on the textile support 2. To allow the transfer, the textile support 2 is pressed, according to the embodiment shown in FIG. 1, between the transfer cylinder 6 and a back pressure cylinder 9; and according to the embodiment shown in FIG. 2, the textile support 2 is pressed between the transport cylinder 8b of the transfer belt 7 and the back-pressure cylinder 9.

Le support de transfert 6, 7 est tangent respectivement au cadre sérigraphique 4 en une zone 14 et au support textile 2 en une zone 15, lesdites zones 14, 15 étant dans un même plan ou dans des plans parallèles. Le ou les plans contenant les axes de rotation du cadre sérigraphique 4, du cylindre de transfert 6 ou du tapis de transfert 7, et du cylindre de contre-pression 9 sont perpendiculaires au plan du support textile 2.The transfer support 6, 7 is tangent respectively to the screen printing frame 4 in a zone 14 and to the textile support 2 in a zone 15, said zones 14, 15 being in the same plane or in parallel planes. The plane or planes containing the axes of rotation of the screen printing frame 4, of the transfer cylinder 6 or of the transfer belt 7, and of the back-pressure cylinder 9 are perpendicular to the plane of the textile support 2.

Le support textile 2 est tangent à chacun des deux cylindres 6, 9 ou 8b, 9 entre lesquels il défile, à la zone 15.The textile support 2 is tangent to each of the two cylinders 6, 9 or 8b, 9 between which it scrolls, in the zone 15.

Par conséquent, du fait que l'énergie d'adhésion sous-couche 5/support textile 2 est supérieure à celle de la sous-couche 5/support de transfert 6, 7, la localisation du transfert s'opère au point de contact entre le support de transfert 6, 7 et le support textile 2.Consequently, owing to the fact that the energy of adhesion underlay 5 / textile support 2 is greater than that of underlay 5 / transfer support 6, 7, the localization of the transfer takes place at the point of contact between the transfer support 6, 7 and the textile support 2.

Les points de la sous-couche 5 ainsi transférés ont une surface plane et une faible épaisseur et sont disposés à la surface du support textile 2. D'autre part, leur surface est adhésive.The points of the sublayer 5 thus transferred have a flat surface and a small thickness and are arranged on the surface of the textile support 2. On the other hand, their surface is adhesive.

Un dispositif permet alors de disperser les particules de polymères thermocollants 10 sur le support textile 2 enduit de la sous-couche 5. De cette manière, les particules 10 adhèrent à la surface des points de la sous-couche 5 adhésive.A device then makes it possible to disperse the particles of fusible polymers 10 on the textile support 2 coated with the sublayer 5. In this way, the particles 10 adhere to the surface of the points of the adhesive sublayer 5.

Ces particules de polymères thermocollants 10 peuvent être des particules de polyamide ou de polyester dont la granulométrie est comprise entre 60 µm et 200 µm. Ces dernières se collent à la surface plane des points de la sous-couche 5 transférée, pour une part, l'autre restant en contact mais n'adhérant pas à la surface du support textile 2.These fusible polymer particles 10 can be polyamide or polyester particles whose particle size is between 60 μm and 200 μm. The latter stick to the flat surface of the points of the transferred sublayer 5, on the one hand, the other remaining in contact but not adhering to the surface of the textile support 2.

Afin de débarrasser le support textile 2 de l'excédent de particules 10, et ne garder que les particules 10 collées à la surface plane des points de la sous-couche 5, l'ensemble est soumis à une dépression 11 et à un battage violent.In order to rid the textile support 2 of the excess particles 10, and keep only the particles 10 bonded to the flat surface of the points of the underlay 5, the assembly is subjected to a vacuum 11 and to a violent threshing .

Le support textile 2 enduit des points 3 de polymères thermocollants, traverse ensuite une enceinte 12 de chauffage et/ou de rayonnement afin notamment d'évaporer le solvant contenu dans la sous-couche 5 si nécessaire, de transformer cette dernière pour que son point de fusion soit supérieur au matériau thermo-adhésif 10 et de mettre en fusion les particules thermo-adhésives 10.The textile support 2 coated with dots 3 of fusible polymers, then passes through a heating and / or radiation enclosure 12 in order in particular to evaporate the solvent contained in the underlayer 5 if necessary, to transform the latter so that its point of is greater than the thermo-adhesive material 10 and to melt the thermo-adhesive particles 10.

L'invention concerne également un entoilage thermocollant 1 obtenu par la mise en oeuvre du procédé qui vient d'être décrit.The invention also relates to a fusible interlining 1 obtained by the implementation of the process which has just been described.

Les propriétés avantageuses de l'entoilage thermocollant 1 proviennent de la disposition particulière des particules de polymères thermocollants 10 vis-à-vis de la sous-couche 5. Cette dernière fait écran totalement aux particules thermocollantes 10. C'est-à-dire que ces particules 10 ne sont pas en contact avec le support textile 2, mais uniquement avec la partie supérieure de la sous-couche 5 fine et parfaitement plane (figure 3). Par conséquent, lorsque l'entoilage 1 est contrecollé sur une draperie, les particules thermocollantes 10 ne fluent pas, sous l'effet de la température et de la pression, dans le support textile 2 puisque la sous-couche coïncide exactement avec les points de particules thermocollantes 10.The advantageous properties of the fusible interlining 1 come from the special arrangement particles of fusible polymers 10 with respect to the sublayer 5. The latter completely shields the fusible particles 10. That is to say that these particles 10 are not in contact with the textile support 2, but only with the upper part of the thin and perfectly flat underlay 5 (FIG. 3). Consequently, when the interlining 1 is laminated to a drapery, the fusible particles 10 do not flow, under the effect of temperature and pressure, in the textile support 2 since the underlayer coincides exactly with the points of fusible particles 10.

Ce n'était pas le cas avec l'entoilage issu de la technique antérieure, car la dispersion de particules sur des points de sous-couche directement enduits par un cadre sérigraphique sur un support textile, laissait la possibilité à certaines particules de se coller à la périphérie des points de sous-couches (figure 4). De ce fait, la substance thermo-adhésive 10 pouvait fluer à travers le support textile 2 au niveau des zones de fluage 17. Alors que cette possibilité n'existe pas pour l'entoilage thermocollant 1 conforme à l'invention, car la sous-couches est transférée.This was not the case with the interlining from the prior art, because the dispersion of particles on underlay points directly coated with a screen-printed frame on a textile support, left the possibility for certain particles to stick to the periphery of the underlay points (Figure 4). As a result, the thermo-adhesive substance 10 could creep through the textile support 2 at the level of the creep zones 17. While this possibility does not exist for the fusible interlining 1 according to the invention, because the under- layers is transferred.

L'invention sera décrite maintenant au moyen de deux exemples donnés à titre indicatif mais non limitatif.The invention will now be described by means of two examples given by way of indication but not limitation.

EXEMPLE IEXAMPLE I

  • Cadre sérigraphique :
    • réseau de points : 75 trous par cm2
    • diamètre des trous du cadre : 300 µm
    Screen printing frame:
    • point network: 75 holes per cm 2
    • frame hole diameter: 300 µm
  • Matériau de sous-couche : PolyéthylèneUnderlay material: Polyethylene
  • Constitution de la pâte :
    • poudre de polyéthylène dont la granulométrie est inférieure à 80 µm   25 %
    • eau   60 %
    • adjuvants   10 %
    • épaississant   5 %
    Constitution of the dough:
    • polyethylene powder with a particle size less than 80 µm 25%
    • water 60%
    • adjuvants 10%
    • thickener 5%
  • Matériau thermadhésif : Polyamide, en poudre d'une granulométrie comprise entre 60 µm et 200 µmThermo-adhesive material: Polyamide, powder with a particle size between 60 µm and 200 µm
  • Support textile : textile tricoté, chaînette, simple en polyester avec trame en polyester texturé. poids de 30 g/m2 Textile support: knitted fabric, chain, simple in polyester with textured polyester weft. weight of 30 g / m 2
  • Entoilage thermocollant : poids total : 42 g/m2 dont 4 g représente le poids de sous-couche et 8 g de polyamide.Fusible interlining: total weight: 42 g / m 2 , 4 g of which represents the weight of the underlay and 8 g of polyamide.
EXEMPLE IIEXAMPLE II

  • Cadre sérigraphique : 45 trous par cm2
       diamètre des trous : 320 µm    Screen printing frame: 45 holes per cm 2
    hole diameter: 320 µm
  • Matériau de sous-couche : Polymère acrylique et aminoplasteUnderlay material: Acrylic polymer and aminoplast
  • Composition de la pâte :
    Figure imgb0001
    Figure imgb0002
    Composition of the dough:
    Figure imgb0001
    Figure imgb0002
  • Matériau thermoadhésif : Polyamide en particules de 60 à 200 µmThermoadhesive material: Polyamide in particles of 60 to 200 µm
EXEMPLE IIIEXAMPLE III

  • Cadre sérigraphique :
    • 45 trous par cm2
    • diamètre des trous : 320 µm
    Screen printing frame:
    • 45 holes per cm 2
    • hole diameter: 320 µm
  • Composition de la pâte :
    • uréthanne-acrylate
    Composition of the dough:
    • urethane-acrylate
  • Matériau thermoadhésif :
    • polyamide en particules de 60 à 200 µm
    Thermoadhesive material:
    • polyamide in particles from 60 to 200 µm
  • Support textile :
    • textile tricoté, avec trame en polyester texturé.
    Textile support:
    • knitted fabric, with textured polyester weft.

Claims (12)

Procédé de fabrication d'un entoilage thermocollant (1) dans lequel un support textile (2) reçoit une enduction de polymères thermocollants répartie en points (3), caractérisé en ce que successivement : - on dépose, au moyen d'un cadre d'impression sérigraphique (4) sur un support de transfert (6, 7) comportant une surface régulière et lisse, une sous-couche (5) de polymères en pâte réticulable ou en dispersion dans un solvant dont le point de fusion est supérieur à une température de thermocollage prédéterminée ; - on transfère les points de surface plane et de faible épaisseur ainsi obtenus sur le support textile (2) ; - on applique des particules de polymères thermocollants (10) sur la sous-couche (5) ; - on fait défiler l'entoilage thermocollant (1) ainsi obtenu dans une enceinte (12) de chauffage et/ou de rayonnement de manière à assurer la réticulation et/ou la mise en fusion de la pâte ou de la dispersion. Method for manufacturing a fusible interlining (1) in which a textile support (2) receives a coating of fusible polymers distributed in points (3), characterized in that successively: - using a screen printing frame (4) on a transfer support (6, 7) having a regular and smooth surface, a sub-layer (5) of polymers in crosslinkable paste or in dispersion in a solvent whose melting point is higher than a predetermined heat-bonding temperature; - The points of flat surface and thin thickness thus obtained are transferred to the textile support (2); - applying particles of fusible polymers (10) on the undercoat (5); - The fusible interfacing (1) thus obtained is passed through a heating and / or radiation enclosure (12) so as to crosslink and / or melt the paste or the dispersion. Procédé selon la revendication 1, caractérisé en ce qu'on applique les particules de polymères thermocollants (10) par saupoudrage puis on aspire les particules de polymères thermocollants (10) n'étant pas en contact direct avec les points de la sous-couche (5).Method according to claim 1, characterized in that the particles of fusible polymers (10) are applied by dusting and then the particles of fusible polymers (10) are sucked which are not in direct contact with the points of the undercoat ( 5). Procédé selon la revendication 1 ou 2, caractérisé en ce que le support de transfert est un cylindre (6).Method according to claim 1 or 2, characterized in that the transfer support is a cylinder (6). Procédé selon la revendication 1 ou 2, caractérisé en ce que le support de transfert est un tapis sans fin (7).Method according to claim 1 or 2, characterized in that the transfer medium is an endless belt (7). Procédé selon l'une des revendications 1 à 4, caractérisé en ce que le polymère de la sous-couche (5) est choisi parmi ceux ayant un point de fusion supérieur à celui des particules thermo-adhésives (10).Method according to one of claims 1 to 4, characterized in that the polymer of the sublayer (5) is chosen from those having a melting point higher than that of the thermo-adhesive particles (10). Procédé selon l'une des revendications 1 à 5, caractérisé en ce que le polymère de la sous-couche (5) est un polyéthylène.Method according to one of claims 1 to 5, characterized in that the polymer of the sublayer (5) is a polyethylene. Procédé selon l'une des revendications 1 à 5, caractérisé en ce que le polymère de la sous-couche (5) est choisi dans le groupe constitué par les mélanges aminoplastes, les résines acryliques, les résines aminoplastes, les polyuréthannes.Method according to one of claims 1 to 5, characterized in that the polymer of the sublayer (5) is chosen from the group consisting of aminoplast mixtures, acrylic resins, aminoplast resins, polyurethanes. Procédé selon l'une des revendications 1 à 7, caractérisé en ce qu'on fait subir, préalablement à son transfert, un prétraitement à la sous-couche (5) de manière à la rendre plus homogène.Method according to one of claims 1 to 7, characterized in that it is subjected, prior to its transfer, a pretreatment to the sub-layer (5) so as to make it more homogeneous. Procédé selon l'une des revendications 1 à 8, caractérisé en ce que le support de transfert (6, 7) est tangent respectivement au cadre sérigraphique (4) en une zone (14) et au support textile (2) en une zone (15), lesdites zones (14, 15) étant dans un même plan ou dans des plans parallèles.Method according to one of claims 1 to 8, characterized in that the transfer support (6, 7) is tangent respectively to the screen printing frame (4) in an area (14) and to the textile support (2) in an area ( 15), said zones (14, 15) being in the same plane or in parallel planes. Procédé selon l'une des revendications 1 à 9, caractérisé en ce que les particules thermocollantes (10) ont une granulométrie comprise entre 60 et 200 µm.Method according to one of claims 1 to 9, characterized in that the fusible particles (10) have a particle size between 60 and 200 µm. Procédé selon l'une des revendications 1 à 10, caractérisé en ce que les particules thermo-adhésives (10) sont des particules de polyamide, de polyester, de polyuréthanne ou de polyéthylène.Method according to one of claims 1 to 10, characterized in that the thermo-adhesive particles (10) are particles of polyamide, polyester, polyurethane or polyethylene. Entoilage thermocollant caractérisé en ce qu'il est obtenu par la mise en oeuvre d'un procédé conforme à l'une quelconque des revendications 1 à 11.Fusible interlining, characterized in that it is obtained by the implementation of a process according to any one of claims 1 to 11.
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FR2711151B1 (en) * 1993-10-11 1996-01-05 Picardie Lainiere Support for interlining comprising a sheet of fibers entangled in weft threads and its manufacturing process.
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US4204017A (en) * 1972-03-23 1980-05-20 Kufner Textilwerke Kg Raster-like heat sealable adhesives on substrates
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Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1162304A1 (en) * 2000-06-08 2001-12-12 Firma Carl Freudenberg Interlining
EP1393641A1 (en) * 2002-09-02 2004-03-03 Carl Freudenberg KG Fixing lining
US6986935B2 (en) 2002-09-02 2006-01-17 Carl Freudenberg Kg Fusible interlining
FR2870433A1 (en) * 2004-05-24 2005-11-25 Lainiere De Picardie Bc Soc Pa METHOD OF MANUFACTURING A THERMOCOLLATING WEAR AND THERMOCOLLANT WEARING OBTAINED
EP1600552A3 (en) * 2004-05-24 2008-04-02 Lainiere De Picardie Bc Method for making a fusible interlining and fusible interlining obtained thereby

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PT792591E (en) 2001-07-31
MY113641A (en) 2002-04-30
ATE198977T1 (en) 2001-02-15
NO309008B1 (en) 2000-11-27
BR9701130A (en) 1998-09-29
PL182251B1 (en) 2001-11-30
FR2745595B1 (en) 1998-05-22
SK25397A3 (en) 1997-09-10
CN1081693C (en) 2002-03-27
PL318718A1 (en) 1997-09-01
FR2745595A1 (en) 1997-09-05
HU215941B (en) 1999-03-29
AU719527B2 (en) 2000-05-11
MX9701284A (en) 1997-08-30
HU9700531D0 (en) 1997-04-28
JPH101880A (en) 1998-01-06
AR006041A1 (en) 1999-07-21
RU2169804C2 (en) 2001-06-27
DE69703993D1 (en) 2001-03-08
DE69703993T2 (en) 2001-08-02
NO970916D0 (en) 1997-02-27
CN1168933A (en) 1997-12-31
KR100492708B1 (en) 2005-08-18
NO970916L (en) 1997-09-01
ZA971737B (en) 1997-09-04
EP0792591B1 (en) 2001-01-31
KR970061129A (en) 1997-09-12
TR199700124A1 (en) 1997-09-21
CA2198692A1 (en) 1997-08-29
UA45976C2 (en) 2002-05-15
US5820928A (en) 1998-10-13
HK1002446A1 (en) 1998-08-28
CZ290017B6 (en) 2002-05-15
ES2155657T3 (en) 2001-05-16
AU1495097A (en) 1997-09-04
SK284312B6 (en) 2005-01-03
HUP9700531A2 (en) 1997-11-28
CZ57197A3 (en) 1997-09-17
HUP9700531A3 (en) 1998-10-28

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