EP0797932A1 - Method to make a fusible interlining and fusible interlining obtained thereby - Google Patents

Method to make a fusible interlining and fusible interlining obtained thereby Download PDF

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Publication number
EP0797932A1
EP0797932A1 EP97400402A EP97400402A EP0797932A1 EP 0797932 A1 EP0797932 A1 EP 0797932A1 EP 97400402 A EP97400402 A EP 97400402A EP 97400402 A EP97400402 A EP 97400402A EP 0797932 A1 EP0797932 A1 EP 0797932A1
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EP
European Patent Office
Prior art keywords
layer
textile support
points
frame
transfer cylinder
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
EP97400402A
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German (de)
French (fr)
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EP0797932B1 (en
Inventor
Pierrot Groshens
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
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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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05C—APPARATUS FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05C1/00—Apparatus in which liquid or other fluent material is applied to the surface of the work by contact with a member carrying the liquid or other fluent material, e.g. a porous member loaded with a liquid to be applied as a coating
    • B05C1/04—Apparatus in which liquid or other fluent material is applied to the surface of the work by contact with a member carrying the liquid or other fluent material, e.g. a porous member loaded with a liquid to be applied as a coating for applying liquid or other fluent material to work of indefinite length
    • B05C1/08—Apparatus in which liquid or other fluent material is applied to the surface of the work by contact with a member carrying the liquid or other fluent material, e.g. a porous member loaded with a liquid to be applied as a coating for applying liquid or other fluent material to work of indefinite length using a roller or other rotating member which contacts the work along a generating line
    • B05C1/10—Apparatus in which liquid or other fluent material is applied to the surface of the work by contact with a member carrying the liquid or other fluent material, e.g. a porous member loaded with a liquid to be applied as a coating for applying liquid or other fluent material to work of indefinite length using a roller or other rotating member which contacts the work along a generating line the liquid or other fluent material being supplied from inside the roller
    • 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
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05C—APPARATUS FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05C9/00—Apparatus or plant for applying liquid or other fluent material to surfaces by means not covered by any preceding group, or in which the means of applying the liquid or other fluent material is not important
    • B05C9/04—Apparatus or plant for applying liquid or other fluent material to surfaces by means not covered by any preceding group, or in which the means of applying the liquid or other fluent material is not important for applying liquid or other fluent material to opposite sides of the work

Definitions

  • the invention relates to a method of manufacturing a fusible interlining and the fusible interlining thus obtained.
  • 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, 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 to 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 100 ° c and 180 ° C, under pressures of a few decibars to a few bars, for relatively short times, of the order 10 to 30 seconds.
  • thermo-adhesive polymers of the interlining must at least partially regain their adhesion properties.
  • thermo-adhesive polymers do not pierce the drapery or produce returns, that is to say pierce the textile support of the interlining.
  • document FR-A-2 177 038 has proposed making a covering by successively depositing two adhesive layers on a textile support.
  • the first layer is applied by coating a viscous dispersion (paste) containing polymers with high viscosity and / or high melting point directly on the textile support by means of a screen printing frame.
  • paste viscous dispersion
  • the second layer is applied by dusting a powder of heat-bonding polymers of 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 then 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 underlay penetrates more or less into the textile support during coating, due to its irregular surface.
  • the adhesive surface of the underlay is thus variable, and consequently, the quantity of particles also, with harmful consequences on the adhesion forces between the interlining and the drapery, and particularly on the inhomogeneity of these forces. membership.
  • the top layer of adhesive must adhere to the bottom layer. This is why, according to this method, most often a sintering is carried out which allows the upper layer to adhere to the lower layer.
  • the state of the art can also be represented by the document FR-A-2 576 191 which describes a stabilizer comprising a first hot-melt layer applied to the front face of a support and a second layer whose melting temperature is higher than the first and applied to the back side of said support.
  • a first object of the present invention is to propose a method for manufacturing a stabilizer. fusible and the interlining thus obtained which overcomes the limits or drawbacks of those known from the prior art.
  • an object of the present invention is to propose such a method by which the thermo-adhesive material does not creep through the textile support during the laminating of the interlining on the drapery.
  • the textile thus coated is subjected to electromagnetic radiation, and / or to electronic bombardment, and / or to a heat treatment.
  • the invention also relates to a fusible interlining, characterized in that it is obtained by the implementation of a process in accordance with the present invention.
  • the fusible interlining 1 comprises a textile support 2 coated on each of its faces 3, 4 with a layer 5, 7 of hot-melt polymers.
  • the textile support 2 is in itself known. It is of the same nature as those conventionally used in the field of interlining.
  • the textile support 2 comprises a first hot-melt layer 5 applied to the front face 3 of the textile support 2 and a second layer 7 applied to the back side 4 of the textile support 2.
  • the first layer 5 is hot-melt while the second layer 7 has a melting temperature higher than the first 5.
  • hot melt is meant a layer which allows hot laminating, which is solid at room temperature and has no adhesive power, but which is plastic at high temperature therefore partially pasty, runny but adhesive.
  • the first layer 5 has a thermoplastic creep greater than the thermoplastic creep of the second layer 7.
  • the fusible interlining 1 is such that the second layer 7 constitutes a barrier or a screen with respect to the first layer 5, that is to say prevents the return phenomenon as defined above. .
  • the process for manufacturing the fusible interlining 1 is such that a layer 5, 7 of hot-melt polymers is deposited simultaneously on each face 3, 4 of the textile support 2.
  • the first hot-melt layer 5 is deposited directly on the front face 3 of the textile support 2 while the second layer 7 is deposited by transfer on the back face 4 of the textile support 2.
  • the first layer 5 distributed in points 6 on the front side 3 of the textile support 2 is deposited by means of a first screen printing frame 9.
  • the second layer 7, distributed in points 8, is deposited, by means of a second screen printing frame 10, on a transfer cylinder 11 having a regular and smooth surface; then the points 8 of flat surface and thin thickness thus obtained are transferred to the reverse side 4 of the textile support 2, the deposition of the first layer 5 and the transfer of the second layer 7 taking place simultaneously so that the points 6, 8 of the layers 5, 7 are located opposite one another in cross section.
  • the deposits of the first hot-melt layer 5 and of the second layer 7 are carried out by means of the screen printing frames 9 and 10 respectively.
  • These rotary frames 9 and 10 in themselves known, cooperate respectively with a doctor blade 9a, 10a of a on the other hand, both with the transfer cylinder 11.
  • the transfer cylinder 11 serves as a counter-cylinder for the first screen printing frame 9, while the latter serves as a counter-cylinder for the transfer cylinder 11.
  • the first screen frame 9, the second screen frame 10 and the transfer cylinder 11 are superimposed, their axes of rotation being in the same plane and perpendicular to the direction of travel of the textile support 2.
  • the screen printing frames 9, 10 allow the implementation of wet coating processes in which very fine polymer powders, in aqueous dispersion, are applied respectively to the textile support 2 and the transfer cylinder 11 by a doctor blade 9a , 10a hollow installed inside the rotary cylinder which has a thin perforated wall.
  • the doctor blades 9a, 10a produce the passage of the paste constituting the layers 5 and 7 respectively through the perforations of the screen printing frames 9 and 10.
  • the first 9 and second 10 screen printing frames have the same diameter and have the same reticular network of perforations.
  • the composition of the first hot-melt layer 5, deposited on the front face 3 of the textile support 2, is based on at least one polymer or at least one thermoplastic copolymer, such as, for example, a polyethylene, a copolyethylene, a polyamide. , a polyester, a copolyester in the form of a dispersion / solution of these compounds. It can also be a mixture of these compounds.
  • composition of the second layer 7, deposited on the reverse side 4 of the textile support 2 is variable depending on the applications. It can for example comprise an anti-adherent which can be a silicone-based product.
  • the second layer 7 comprises polymers which may or may not be crosslinkable, and the melting point of which is higher than that of the polymers of the hot-melt layer 5.
  • finely ground materials are used whose melting point is higher than that of the material used for the first layer 5, such as polyethylenes.
  • reactive materials chosen so that their melting points are also higher than those of the material used for the first layer 5.
  • aminoplast mixtures, acrylic resins, aminoplasts and polyurethanes, epoxy and acrylic urethanes are particularly suitable.
  • This paste is then deposited on the transfer cylinder 11 by the second screen printing frame 10 and by means 11 ′ then undergoes transformations aimed at evaporating the solvent in whole or in part, and / or in reacting the polymers thereof and / or to melt the finely ground polymer particles.
  • the next step consists in transferring the network of points 8 of the second layer 7 on the reverse side 4 of the textile support 2.
  • the textile support 2 is pressed between the transfer cylinder 11 and the first screen frame 9 .
  • the first screen frame 9 and the transfer cylinder 11 are tangent at a point 13, the textile support 2 running between the first screen frame 9 and the transfer cylinder 11 also being tangent to each of them at the point 13.
  • the perforations of the first screen frame 9 correspond with the points 8 of the second layer 7 at least at the point of tangency or contact 13 of the textile support 2 with the first screen frame 9 and the transfer cylinder 11.
  • the points 8 of the second layer 7 thus transferred have a flat surface and a small thickness and are arranged on the surface of the textile support 2.
  • the deposition of the second layer 7 on the transfer cylinder 11 by the second screen frame 10 is therefore done prior to the deposition of the first layer 5 directly on the front face 3 of the textile support 2 by the first screen frame 9.
  • the peripheral speed of the first screen frame 9, of the second screen frame 10 and of the transfer cylinder 11 is adjusted so that the points 6, 8 of the layers 5, 7 are located opposite one another in cross section.
  • the textile support 2 coated with points 6, 8 facing each other then passes through a heating and / or radiation enclosure 12 in order in particular to evaporate the solvent if necessary, to transform the second layer 7 so that its point of is greater than that of the first layer 5 and to melt the polymers constituting the first layer 5.
  • the invention also relates to a fusible interlining obtained by implementing the method which has just been described.

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  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Manufacturing Of Multi-Layer Textile Fabrics (AREA)
  • Details Of Garments (AREA)
  • Laminated Bodies (AREA)
  • Chemical Or Physical Treatment Of Fibers (AREA)
  • Treatment Of Fiber Materials (AREA)
  • Printing Methods (AREA)
  • Pharmaceuticals Containing Other Organic And Inorganic Compounds (AREA)
  • Acyclic And Carbocyclic Compounds In Medicinal Compositions (AREA)
  • Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
  • Decoration By Transfer Pictures (AREA)

Abstract

In the prodn. of a fusible interlining material, at least one initial graphic screen series (9) is deposited on the right face (3) of the carrier fabric (2) as the first layer (5) in a repeat pattern of dots (6). A second graphic screen series (10) is deposited as the second layer (7) on the left face (4) of the carrier fabric (2) through a transfer cylinder (11) with a smooth surface to give the dots (8). The thin dots (8), with a flat surface, are transferred to the left face (4) of the fabric (2) as the second layer (7) simultaneously with the deposit of the first layer (5), so that the dots (6,8) in each layer face each other on opposite sides of the material.

Description

L'invention concerne un procédé de fabrication d'un entoilage thermocollant et l'entoilage thermocollant ainsi obtenu.The invention relates to a method of manufacturing a fusible interlining and the fusible interlining thus obtained.

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, 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, 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 aux 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 to 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 100°c et 180°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 100 ° c and 180 ° C, under pressures of a few decibars to a few bars, for relatively short times, of the order 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 ne transpercent la draperie ou ne produisent des retours, c'est-à-dire transpercent le support textile de l'entoilage.Also during this operation, it is necessary to avoid that these thermo-adhesive polymers do not pierce the drapery or produce returns, that is to say pierce the textile support of the interlining.

En effet, de tels transpercements et retours produiraient un effet inesthétique, 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 et retours ont essentiellement pour conséquence de coller entre elles les fibres du support textile, aboutissant à un complexe dont la souplesse est médiocre. Cette dernière est en effet due en partie aux articulations possibles du complexe, et donc à la possibilité des fibres textiles de pouvoir glisser les unes sur les autres.These piercings and returns essentially have the consequence of sticking together the fibers of the textile support, resulting in a complex whose flexibility is poor. The latter is in fact due in part to the possible joints of the complex, and therefore to the possibility of the textile fibers being able to slide over one another.

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 adhésives sur un support textile. La première couche est appliquée par enduction d'une dispersion visqueuse (pâte) contenant des polymères à haute viscosité et/ou à haut point de fusion directement sur le support textile au moyen d'un cadre sérigraphique.Thus, document FR-A-2 177 038 has proposed making a covering by successively depositing two adhesive layers on a textile support. The first layer is applied by coating a viscous dispersion (paste) containing polymers with high viscosity and / or high melting point directly on the textile support by means of a screen printing frame.

La deuxième couche est appliquée 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 applied by dusting a powder of heat-bonding polymers of viscosity and / or melting point lower than those of the first layer.

Les points de la première couche, du fait de la nature et de la composition des composés la constituant, ont leur surface adhésive. 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 points of the first layer, due to the nature and composition of the compounds constituting it, have their adhesive surface. 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 forment ainsi un écran ; l'adhésif ne flue théoriquement pas à travers le support textile lorsque l'entoilage est ensuite 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 then 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, du fait de sa surface irrégulière. La surface adhésive de la sous-couche est ainsi 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 underlay penetrates more or less into the textile support during coating, due to its irregular surface. The adhesive surface of the underlay is thus variable, and consequently, the quantity of particles also, with harmful consequences on the adhesion forces between the interlining and the drapery, and particularly on the inhomogeneity of these forces. membership.

En outre, selon le procédé décrit dans le document FR-A-2 177 038, on utilise un cylindre d'enduction semblable à ceux utilisés pour l'héliographie. Mais les quantités de poudre déposées dans les cavités du cylindre sont donc peu précises. Ainsi, les couches obtenues ne sont pas uniformes.In addition, according to the method described in document FR-A-2 177 038, a coating cylinder similar to those used for heliography is used. However, the quantities of powder deposited in the cavities of the cylinder are therefore imprecise. Thus, the layers obtained are not uniform.

De plus, la couche supérieur d'adhésif doit adhérer à la couche inférieure. C'est pourquoi, selon ce procédé, on effectue le plus souvent un frittage qui permet à la couche supérieure d'adhérer à la couche inférieure.In addition, the top layer of adhesive must adhere to the bottom layer. This is why, according to this method, most often a sintering is carried out which allows the upper layer to adhere to the lower layer.

Par ailleurs, dans un tel procédé, les constitutions chimiques de la sous-couche et de la couche supérieure doivent être compatibles.Furthermore, in such a process, the chemical constitutions of the sublayer and of the upper layer must be compatible.

L'état de la technique peut être également représenté par le document FR-A-2 576 191 qui décrit un entoilage comportant une première couche thermofusible appliquée sur la face recto d'un support et une seconde couche dont la température de fusion est plus élevée que la première et appliquée sur la face verso dudit support.The state of the art can also be represented by the document FR-A-2 576 191 which describes a stabilizer comprising a first hot-melt layer applied to the front face of a support and a second layer whose melting temperature is higher than the first and applied to the back side of said support.

Un premier objet de la présente invention est de proposer un procédé de fabrication d'un entoilage thermocollant et l'entoilage ainsi obtenu 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 propose a method for manufacturing a stabilizer. fusible and the interlining thus obtained 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 tel procédé grâce auquel la matière thermo-adhésive ne flue pas à travers le support textile lors du contrecollage de l'entoilage sur la draperie.More particularly, an object of the present invention is to propose such a method by which the thermo-adhesive material does not creep through the textile support during the laminating of the interlining on the drapery.

A cet effet, l'invention concerne un procédé de fabrication d'un entoilage thermocollant comportant un support textile, une première couche thermofusible appliquée sur l'une de ses faces dite face recto et une seconde couche, dont la température de fusion est supérieure à la première, appliquée sur la face verso du support textile, caractérisé en ce que :

  • on dépose, au moyen d'un premier cadre sérigraphique, la première couche répartie en points sur la face recto du support textile ;
  • on dépose, au moyen d'un second cadre sérigraphique, la seconde couche répartie en points sur un cylindre de transfert comportant une surface régulière et lisse ;
  • on transfert les points de surface plane et de faible épaisseur ainsi obtenus sur la face verso du support textile, le dépôt de la première couche et le transfert de la seconde couche ayant lieu simultanément de manière que les points des couches soient situés en regard les uns des autres en coupe transversale.
To this end, the invention relates to a process for manufacturing a fusible interlining comprising a textile support, a first hot-melt layer applied to one of its faces, called the front side, and a second layer, the melting temperature of which is higher than the first, applied to the back side of the textile support, characterized in that:
  • the first layer distributed in points on the front side of the textile support is deposited, by means of a first screen printing frame;
  • the second layer distributed in points is deposited, by means of a second screen-printing frame, on a transfer cylinder comprising a regular and smooth surface;
  • the points of planar surface and of thin thickness thus obtained are transferred to the reverse side of the textile support, the deposition of the first layer and the transfer of the second layer taking place simultaneously so that the points of the layers are located opposite each other others in cross section.

On soumet le textile ainsi enduit à un rayonnement électromagnétique, et/ou à un bombardement électronique, et/ou à un traitement thermique.The textile thus coated is subjected to electromagnetic radiation, and / or to electronic bombardment, and / or to a heat treatment.

Selon un autre aspect, l'invention concerne encore un entoilage thermocollant caractérisé en ce qu'il est obtenu par la mise en oeuvre d'un procédé conforme à la présente invention.According to another aspect, the invention also relates to a fusible interlining, characterized in that it is obtained by the implementation of a process in accordance with the present invention.

D'autres caractéristiques et avantages de la présente invention apparaîtront clairement à la lecture de la description qui suit faite en référence à la figure unique annexée qui est une vue schématique d'un dispositif illustrant le procédé de fabrication d'un entoilage thermocollant selon l'invention.Other characteristics and advantages of the present invention will appear clearly on reading the description which follows made with reference to the single appended figure which is a schematic view of a device illustrating the process for manufacturing a fusible interlining according to the invention.

L'entoilage thermocollant 1 selon l'invention comprend un support textile 2 enduit sur chacune de ses faces 3, 4 d'une couche 5, 7 de polymères thermofusibles.The fusible interlining 1 according to the invention comprises a textile support 2 coated on each of its faces 3, 4 with a layer 5, 7 of hot-melt polymers.

Le support textile 2 est en lui-même connu. Il est de même nature que ceux conventionnellement mis en oeuvre dans le domaine de l'entoilage.The textile support 2 is in itself known. 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 and then subjected to finishing operations before being used as a coating support.

Le support textile 2 comporte une première couche 5 thermofusible appliquée sur la face recto 3 du support textile 2 et une seconde couche 7 appliquée sur la face verso 4 du support textile 2. La première couche 5 est thermofusible tandis que la seconde couche 7 a une température de fusion supérieure à la première 5. Par thermofusible, on entend une couche qui permet le contrecollage à chaud, qui est solide à température ambiante et ne possède pas de pouvoir adhésif, mais qui est plastique à température élevée donc partiellement pâteuse, coulante mais adhésive. Ainsi, la première couche 5 possède un fluage thermoplastique supérieur au fluage thermoplastique de la seconde couche 7.The textile support 2 comprises a first hot-melt layer 5 applied to the front face 3 of the textile support 2 and a second layer 7 applied to the back side 4 of the textile support 2. The first layer 5 is hot-melt while the second layer 7 has a melting temperature higher than the first 5. By hot melt is meant a layer which allows hot laminating, which is solid at room temperature and has no adhesive power, but which is plastic at high temperature therefore partially pasty, runny but adhesive. Thus, the first layer 5 has a thermoplastic creep greater than the thermoplastic creep of the second layer 7.

L'entoilage thermocollant 1 est tel que la seconde couche 7 constitue une barrière ou un écran vis-à-vis de la première couche 5, c'est-à-dire empêche le phénomène de retour tel qu'il a été défini plus haut.The fusible interlining 1 is such that the second layer 7 constitutes a barrier or a screen with respect to the first layer 5, that is to say prevents the return phenomenon as defined above. .

Le procédé de fabrication de l'entoilage thermocollant 1 est tel que l'on dépose simultanément sur chaque face 3, 4 du support textile 2 une couche 5, 7 de polymères thermofusibles. La première couche 5 thermofusible est déposée directement sur la face recto 3 du support textile 2 alors que la seconde couche 7 est déposée par transfert sur la face verso 4 du support textile 2.The process for manufacturing the fusible interlining 1 is such that a layer 5, 7 of hot-melt polymers is deposited simultaneously on each face 3, 4 of the textile support 2. The first hot-melt layer 5 is deposited directly on the front face 3 of the textile support 2 while the second layer 7 is deposited by transfer on the back face 4 of the textile support 2.

A cet effet on dépose, au moyen d'un premier cadre sérigraphique 9, la première couche 5 répartie en points 6 sur la face recto 3 du support textile 2.To this end, the first layer 5 distributed in points 6 on the front side 3 of the textile support 2 is deposited by means of a first screen printing frame 9.

On dépose, au moyen d'un second cadre sérigraphique 10, la seconde couche 7 répartie en points 8 sur un cylindre de transfert 11 comportant une surface régulière et lisse ; puis on transfert les points 8 de surface plane et de faible épaisseur ainsi obtenus sur la face verso 4 du support textile 2, le dépôt de la première couche 5 et le transfert de la seconde couche 7 ayant lieu simultanément de manière que les points 6, 8 des couches 5, 7 soient situés en regard les uns des autres en coupe transversale.The second layer 7, distributed in points 8, is deposited, by means of a second screen printing frame 10, on a transfer cylinder 11 having a regular and smooth surface; then the points 8 of flat surface and thin thickness thus obtained are transferred to the reverse side 4 of the textile support 2, the deposition of the first layer 5 and the transfer of the second layer 7 taking place simultaneously so that the points 6, 8 of the layers 5, 7 are located opposite one another in cross section.

Les dépôts de la première couche 5 thermofusible et de la seconde couche 7 sont effectués au moyen des cadres sérigraphiques respectivement 9 et 10. Ces cadres rotatifs 9 et 10, en eux-mêmes connus, coopèrent respectivement avec une racle 9a, 10a d'une part et d'autre part, tous les deux avec le cylindre de transfert 11.The deposits of the first hot-melt layer 5 and of the second layer 7 are carried out by means of the screen printing frames 9 and 10 respectively. These rotary frames 9 and 10, in themselves known, cooperate respectively with a doctor blade 9a, 10a of a on the other hand, both with the transfer cylinder 11.

En d'autres termes, le cylindre de transfert 11 sert de contre-cylindre pour le premier cadre sérigraphique 9, tandis que ce dernier sert de contre-cylindre pour le cylindre de transfert 11.In other words, the transfer cylinder 11 serves as a counter-cylinder for the first screen printing frame 9, while the latter serves as a counter-cylinder for the transfer cylinder 11.

De ce fait, le premier cadre sérigraphique 9, le second cadre sérigraphique 10 et le cylindre de transfert 11 sont superposés, leurs axes de rotation étant dans un même plan et perpendiculaires à la direction de défilement du support textile 2.As a result, the first screen frame 9, the second screen frame 10 and the transfer cylinder 11 are superimposed, their axes of rotation being in the same plane and perpendicular to the direction of travel of the textile support 2.

Les cadres sérigraphiques 9, 10 permettent la mise en oeuvre de procédés d'enduction par voie humide dans lesquels des poudres très fines de polymères, en dispersion aqueuse, sont appliquées respectivement sur le support textile 2 et le cylindre de transfert 11 par une racle 9a, 10a creuse installée à l'intérieur du cylindre rotatif qui a une paroi mince perforée. Les racles 9a, 10a produisent le passage de la pâte constituant respectivement les couches 5 et 7 à travers les perforations des cadres sérigraphiques 9 et 10.The screen printing frames 9, 10 allow the implementation of wet coating processes in which very fine polymer powders, in aqueous dispersion, are applied respectively to the textile support 2 and the transfer cylinder 11 by a doctor blade 9a , 10a hollow installed inside the rotary cylinder which has a thin perforated wall. The doctor blades 9a, 10a produce the passage of the paste constituting the layers 5 and 7 respectively through the perforations of the screen printing frames 9 and 10.

Dans un mode de réalisation préféré, les premier 9 et second 10 cadres sérigraphiques ont le même diamètre et comportent le même réseau réticulaire de perforations.In a preferred embodiment, the first 9 and second 10 screen printing frames have the same diameter and have the same reticular network of perforations.

La composition de la première couche 5 thermofusible, déposée sur la face recto 3 du support textile 2, est à base d'au moins un polymère ou d'au moins un copolymère thermoplastique, comme par exemple, un polyéthylène, un copolyéthylène, un polyamide, un polyester, un copolyester sous la forme d'une dispersion/solution de ces composés. Ce peut être également un mélange de ces composés.The composition of the first hot-melt layer 5, deposited on the front face 3 of the textile support 2, is based on at least one polymer or at least one thermoplastic copolymer, such as, for example, a polyethylene, a copolyethylene, a polyamide. , a polyester, a copolyester in the form of a dispersion / solution of these compounds. It can also be a mixture of these compounds.

La composition de la seconde couche 7, déposée sur la face verso 4 du support textile 2, est variable selon les applications. Elle peut par exemple comprendre un anti-adhérent qui peut être un produit à base de silicone.The composition of the second layer 7, deposited on the reverse side 4 of the textile support 2, is variable depending on the applications. It can for example comprise an anti-adherent which can be a silicone-based product.

La seconde couche 7 comprend des polymères réticulables ou pas, et dont la température de fusion est supérieure à celle des polymères de la couche thermofusible 5.The second layer 7 comprises polymers which may or may not be crosslinkable, and the melting point of which is higher than that of the polymers of the hot-melt layer 5.

Dans certains cas, on utilise des matériaux finement broyés dont le point de fusion est supérieur à celui du matériau utilisé pour la première couche 5, tels que les polyéthylènes. Dans d'autres cas, on utilise des matières réactives choisies de manière que leurs points de fusion soient également supérieurs à ceux du matériau utilisé pour la première couche 5. Ainsi, les mélanges aminoplastes, les résines acryliques, les aminoplastes et les polyuréthannes , les epoxy et les acryliques-uréthannes conviennent particulièrement.In some cases, finely ground materials are used whose melting point is higher than that of the material used for the first layer 5, such as polyethylenes. In other cases, reactive materials chosen so that their melting points are also higher than those of the material used for the first layer 5. Thus, aminoplast mixtures, acrylic resins, aminoplasts and polyurethanes, epoxy and acrylic urethanes are particularly suitable.

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

Cette pâte est alors déposée sur le cylindre de transfert 11 par le second cadre sérigraphique 10 et par des moyens 11' subit ensuite des transformations visant à évaporer le solvant en tout ou partie, et/ou à faire réagir les polymères de celle-ci et/ou à mettre en fusion les particules de polymère finement broyés.This paste is then deposited on the transfer cylinder 11 by the second screen printing frame 10 and by means 11 ′ then undergoes transformations aimed at evaporating the solvent in whole or in part, and / or in reacting the polymers thereof and / or to melt the finely ground polymer particles.

L'étape suivante consiste à transférer le réseau de points 8 de la second couche 7 sur la face verso 4 du support textile 2. Pour permettre le transfert, le support textile 2 est pressé entre le cylindre de transfert 11 et le premier cadre sérigraphique 9.The next step consists in transferring the network of points 8 of the second layer 7 on the reverse side 4 of the textile support 2. To allow the transfer, the textile support 2 is pressed between the transfer cylinder 11 and the first screen frame 9 .

Pour ce faire, le premier cadre sérigraphique 9 et le cylindre de transfert 11 sont tangents en un point 13, le support textile 2 défilant entre le premier cadre sérigraphique 9 et le cylindre de transfert 11 étant également tangent à chacun de ceux-ci au point 13. De plus, les perforations du premier cadre sérigraphique 9 correspondent avec les points 8 de la seconde couche 7 au moins au point de tangence ou de contact 13 du support textile 2 avec le premier cadre sérigraphique 9 et le cylindre de transfert 11.To do this, the first screen frame 9 and the transfer cylinder 11 are tangent at a point 13, the textile support 2 running between the first screen frame 9 and the transfer cylinder 11 also being tangent to each of them at the point 13. In addition, the perforations of the first screen frame 9 correspond with the points 8 of the second layer 7 at least at the point of tangency or contact 13 of the textile support 2 with the first screen frame 9 and the transfer cylinder 11.

Par conséquent, comme l'énergie d'adhésion entre la seconde couche 7 et le support textile 2 est supérieure à celle entre la seconde couche 7 et le cylindre de transfert 11, le transfert s'opère au point de contact 13 entre le cylindre de transfert 11 et le support textile 2.Consequently, since the energy of adhesion between the second layer 7 and the textile support 2 is greater than that between the second layer 7 and the transfer cylinder 11, the transfer takes place at the point of contact 13 between the cylinder transfer 11 and the textile support 2.

Les points 8 de la seconde couche 7 ainsi transférés ont une surface plane et une faible épaisseur et sont disposés à la surface du support textile 2.The points 8 of the second layer 7 thus transferred have a flat surface and a small thickness and are arranged on the surface of the textile support 2.

Le dépôt de la seconde couche 7 sur le cylindre de transfert 11 par le second cadre sérigraphique 10 se fait donc préalablement au dépôt de la première couche 5 directement sur la face recto 3 du support textile 2 par le premier cadre sérigraphique 9.The deposition of the second layer 7 on the transfer cylinder 11 by the second screen frame 10 is therefore done prior to the deposition of the first layer 5 directly on the front face 3 of the textile support 2 by the first screen frame 9.

A cet effet, on règle la vitesse périphérique du premier cadre sérigraphique 9, du second cadre sérigraphique 10 et du cylindre de transfert 11 pour que les points 6, 8 des couches 5, 7 soient situés en regard les uns des autres en coupe transversale.To this end, the peripheral speed of the first screen frame 9, of the second screen frame 10 and of the transfer cylinder 11 is adjusted so that the points 6, 8 of the layers 5, 7 are located opposite one another in cross section.

Le support textile 2 enduit des points 6, 8 en regard les uns des autres, traverse ensuite une enceinte 12 de chauffage et/ou de rayonnement afin notamment d'évaporer le solvant si nécessaire, de transformer la seconde couche 7 pour que son point de fusion soit supérieur à celui de la première couche 5 et de mettre en fusion les polymères constituant la première couche 5.The textile support 2 coated with points 6, 8 facing each other, then passes through a heating and / or radiation enclosure 12 in order in particular to evaporate the solvent if necessary, to transform the second layer 7 so that its point of is greater than that of the first layer 5 and to melt the polymers constituting the first layer 5.

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

Claims (10)

Procédé de fabrication d'un entoilage thermocollant (1) comportant un support textile (2), une première couche (5) thermofusible appliquée sur l'une (3) de ses faces dite face recto et une seconde couche (7), dont la température de fusion est supérieure à la première (5), appliquée sur la face verso (4) du support textile (2), caractérisé en ce que : - on dépose, au moyen d'un premier cadre sérigraphique (9), la première couche (5) répartie en points (6) sur la face recto (3) du support textile (2) ; - on dépose, au moyen d'un second cadre sérigraphique (10), la seconde couche (7) répartie en points (8) sur un cylindre de transfert (11) comportant une surface régulière et lisse ; - on transfère les points (8) de surface plane et de faible épaisseur ainsi obtenus sur la face verso (4) du support textile (2), le dépôt de la première couche (5) et le transfert de la seconde couche (7) ayant lieu simultanément de manière que les points (6,8) des couches (5,7) soient situés en regard les uns des autres en coupe transversale ; - on soumet le textile ainsi enduit à un rayonnement électromagnétique et/ou à un bombardement électronique et/ou à un traitement thermique. Method for manufacturing a fusible interlining (1) comprising a textile support (2), a first hot-melt layer (5) applied to one (3) of its faces, called the front side and a second layer (7), the melting temperature is higher than the first (5), applied to the back side (4) of the textile support (2), characterized in that: - the first layer (5) distributed in points (6) on the front side (3) of the textile support (2) is deposited, by means of a first screen printing frame (9); - the second layer (7) distributed in points (8) on a transfer cylinder (11) having a regular and smooth surface is deposited, by means of a second screen printing frame (10); - the points (8) of flat surface and of thin thickness thus obtained are transferred to the back side (4) of the textile support (2), the deposition of the first layer (5) and the transfer of the second layer (7) taking place simultaneously so that the points (6,8) of the layers (5,7) are located opposite one another in cross section; - The textile thus coated is subjected to electromagnetic radiation and / or to electronic bombardment and / or to heat treatment. Procédé selon la revendication 1, caractérisé en ce que l'on règle la vitesse périphérique du premier cadre sérigraphique (9), du second cadre sérigraphique (10) et du cylindre de transfert (11) pour que les points (6,8) des couches (5,7) soient situés en regard les uns des autres en coupe transversale.Method according to claim 1, characterized in that the peripheral speed of the first screen frame (9), the second screen frame (10) and the transfer cylinder (11) so that the points (6,8) of the layers (5,7) are located opposite one another in cross section. Procédé selon la revendication 1 ou 2, caractérisé en ce que la première couche (5) est à base d'au moins un polymère ou d'au moins un copolymère thermoplastique.Method according to claim 1 or 2, characterized in that the first layer (5) is based on at least one polymer or at least one thermoplastic copolymer. Procédé selon la revendication 3, caractérisé en ce que le polymère ou le copolymère est choisi dans le groupe constitué par les polyéthylènes, les copolyéthylènes, les polyamides, les polyesters, les copolyesters, une dispersion/solution de ces composés et leurs mélanges.Process according to claim 3, characterized in that the polymer or the copolymer is chosen from the group consisting of polyethylenes, copolyethylenes, polyamides, polyesters, copolyesters, a dispersion / solution of these compounds and their mixtures. Procédé selon l'une des revendications 1 à 4, caractérisé en ce que la seconde couche (7) comprend des polymères réticulables ou pas, et dont la température de fusion est supérieure à celle des polymères de la couche thermofusible 5.Method according to one of claims 1 to 4, characterized in that the second layer (7) comprises polymers which may or may not be crosslinkable, and whose melting temperature is higher than that of the polymers of the hot-melt layer 5. Procédé selon l'une des revendications 1 à 5, caractérisé en ce que le premier cadre sérigraphique (9) et le cylindre de transfert (11) sont tangents en un point (13), le support textile (2) défilant entre le premier cadre sérigraphique (9) et le cylindre de transfert (11) étant également tangent à chacun de ceux-ci au point (13).Method according to one of claims 1 to 5, characterized in that the first screen printing frame (9) and the transfer cylinder (11) are tangent at a point (13), the textile support (2) running between the first frame screen printing (9) and the transfer cylinder (11) also being tangent to each of these at point (13). Procédé selon l'une des revendications 1 à 6, caractérisé en ce que les perforations du premier cadre sérigraphique (9) correspondent avec les points (8) de la seconde couche (7) au moins au point de tangence (13) du support textile (2) avec le premier cadre sérigraphique (9) et le cylindre de transfert (11).Method according to one of claims 1 to 6, characterized in that the perforations of the first screen frame (9) correspond with the points (8) of the second layer (7) at least at the point of tangency (13) of the textile support (2) with the first screen printing frame (9) and the transfer cylinder (11). Procédé selon l'une des revendications 1 à 7, caractérisé en ce que les premier (9) et second (10) cadres sérigraphiques ont le même diamètre et comportent le même réseau réticulaire de perforations.Method according to one of claims 1 to 7, characterized in that the first (9) and second (10) screen printing frames have the same diameter and have the same reticular network of perforations. Procédé selon l'une des revendications 1 à 8, caractérisé en ce que le premier cadre sérigraphique (9), le second cadre sérigraphique (10) et le cylindre de transfert 11 sont superposés, leurs axes de rotation étant dans un même plan.Method according to one of claims 1 to 8, characterized in that the first screen frame (9), the second screen frame (10) and the transfer cylinder 11 are superimposed, their axes of rotation being in the same plane. Entoilage thermocollant caractérisé en ce qu'il est obtenu par la mise en oeuvre d'un procédé conforme à l'une des revendications 1 à 9.Fusible interlining, characterized in that it is obtained by the implementation of a process according to one of claims 1 to 9.
EP97400402A 1996-03-25 1997-02-24 Method to make a fusible interlining Expired - Lifetime EP0797932B1 (en)

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FR9603693A FR2746264B1 (en) 1996-03-25 1996-03-25 METHOD FOR MANUFACTURING THERMAL-STICKING LINING AND THERMAL-STICKING LINING THUS OBTAINED
FR9603693 1996-03-25

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SK284226B6 (en) 2004-11-03
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MY129780A (en) 2007-04-30
NO971380D0 (en) 1997-03-24
TR199700217A1 (en) 1997-10-21
UA45978C2 (en) 2002-05-15
ES2146962T3 (en) 2000-08-16
PL319088A1 (en) 1997-09-29
US5827579A (en) 1998-10-27
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CZ61897A3 (en) 1997-10-15
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CA2198995A1 (en) 1997-09-25
HK1002445A1 (en) 1998-08-28
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AU710521B2 (en) 1999-09-23
CN1164369A (en) 1997-11-12
FR2746264B1 (en) 1998-05-22
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CN1189111C (en) 2005-02-16
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SK35997A3 (en) 1997-10-08
HU9700638D0 (en) 1997-05-28
MX9702098A (en) 1997-09-30
PL184624B1 (en) 2002-11-29
AR006383A1 (en) 1999-08-25
NO971380L (en) 1997-09-26
DE69701915D1 (en) 2000-06-15
EP0797932B1 (en) 2000-05-10
DE69701915T2 (en) 2000-12-07
BR9701445A (en) 1998-11-03
AU1494997A (en) 1997-10-09
ATE192628T1 (en) 2000-05-15

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