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EP0503204B1 - Thermobonded lining material and process for making the same - Google Patents

Thermobonded lining material and process for making the same Download PDF

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Publication number
EP0503204B1
EP0503204B1 EP91403494A EP91403494A EP0503204B1 EP 0503204 B1 EP0503204 B1 EP 0503204B1 EP 91403494 A EP91403494 A EP 91403494A EP 91403494 A EP91403494 A EP 91403494A EP 0503204 B1 EP0503204 B1 EP 0503204B1
Authority
EP
European Patent Office
Prior art keywords
polymers
upper layer
underlayer
base fabric
fusible
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.)
Expired - Lifetime
Application number
EP91403494A
Other languages
German (de)
French (fr)
Other versions
EP0503204A1 (en
Inventor
Pierre Groshens
Bernard Demoulin
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.)
CHARGETEX 16
Lainiere de Picardie BC SAS
Original Assignee
Lainiere de Picardie SA
Lainiere de Picardie BC SAS
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
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Publication date
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Publication of EP0503204A1 publication Critical patent/EP0503204A1/en
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Publication of EP0503204B1 publication Critical patent/EP0503204B1/en
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Classifications

    • 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
    • D06M17/08—Polyamides polyimides
    • 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
    • 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
    • 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
    • D06M17/06—Polymers of vinyl compounds
    • 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
    • D06M17/10—Polyurethanes polyurea

Definitions

  • the invention relates to a fusible interlining and its manufacturing process.
  • fusible linings consisting of a textile support on which is deposited, by coating, a layer of thermo-adhesive polymers distributed in points.
  • linings are 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 ... can be controlled.
  • thermo-adhesive layer These properties of the complex result from the nature of the drapery, the nature of the textile fabric supporting the interlining and also from the nature, composition and method 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 any "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 of 10 to 30 seconds.
  • thermo-adhesive polymers of the interlining must at least partially regain their adhesion property.
  • thermo-adhesive polymers from piercing the drapery or producing returns, that is to say piercing the textile support of the interlining.
  • the documents GB-A-1 133 331 and GB-A-1 360 496 propose a fusible interlining intended for the clothing industry comprising a textile coated with a discontinuous adhesive layer made of a first thermoplastic material, each spot being then coated with a second polymeric material which can be heat-crosslinkable or have a higher melting point than the first material.
  • FR-A-2 177 038 it has been proposed to produce a stabilizer by successively depositing two layers of adhesive on a support.
  • the first layer is produced by coating, by screen printing, a viscous dispersion containing polymers with high viscosity and / or high melting point.
  • 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.
  • the coatings produced by the dry process using a hollow engraved cylinder are affected by a lack of mechanical cohesion of the two layers of polymers with respect to each other.
  • the interface of the two layers constitutes a zone of weakness and the clothes made with interlining of this type do not support maintenance treatments.
  • German patent DE-C-2 461 845.9 the simultaneous coating by screen printing has been proposed of two layers of viscous dispersion containing polymers of different viscosity and / or melting point.
  • the two pastes are delivered in the same frame by two separate doctor blades juxtaposed.
  • the object of the present invention is therefore the production of a fusible interlining and its manufacturing process which allow simple industrial operation making it possible to obtain quality products.
  • the invention relates to a process for manufacturing fusible linings in which a textile support receives a wet coating of thermo-adhesive polymers distributed in points.
  • the undercoat may contain at least one agent capable of reacting with the thermo-adhesive polymers of the upper layer and the undercoat is dried and / or partially crosslinked after its deposition on the textile support and before deposition on the upper layer .
  • the sub-layer can be subjected to UV, microwave or H.F. treatment, or to electronic bombardment before the deposition of the upper layer.
  • the invention also relates to a fusible interfacing comprising the characteristics defined in claim 6.
  • thermo-adhesive properties of the upper layer vary progressively from the zone of contact with the sub-layer to its upper zone.
  • the sublayer comprises polymers belonging to the group formed by crosslinkable silicones, polyfluoreas, crosslinkable polyurethanes and polyacrylates.
  • the upper layer for its part, preferably comprises polymers belonging to the group formed by polyamides, copolyamides, polyesters, copolyesters, polyurethanes and polyethylenes.
  • the upper layer comprises reactive polymers belonging to the group formed by styrene-ethyl acrylate copolymers, melamines, aziridine, isocyanates, unsaturated polyesters and epoxy resins .
  • the interlining 1 comprises a textile support 2 and fusible dots 3.
  • the textile support 2 is in itself known. It is of the same nature as those conventionally used in the field of interlining.
  • Cotton or fibranne fabrics can be used. However, the best results have been obtained with textured polyester fabrics or non-woven veils whose binding avoids the risk of linting. More generally, the use of a fabric of synthetic threads Continuous multifilaments of the flat or textured type is particularly well suited.
  • the textile support 2 is glued to a conveyor belt 100.
  • the conveyor belt 100 which preferably forms a closed loop, circulates on transport cylinders 101-104.
  • the conveyor belt 100 is preferably made from a polyester textile, covered with a layer or a coating of crosslinked silicone polymers. It is important that this mat has very good dimensional stability, especially in the longitudinal direction. Indeed, as we will see later, it is subjected to tensile forces and significant temperature differences which must not cause relative displacements of the points of the textile support 2 glued on it. It can also be produced from a glass fiber or aramid fiber fabric also covered with a layer or a coating of crosslinked silicone polymers.
  • the transport cylinders 101-104 associated with guide means ensure the movement of the belt perpendicular to the axes of the frames 112 and 113 and ensure the stability of the position of the belt 100 parallel to these axes.
  • a so-called deformation cylinder can be used to facilitate this adjustment.
  • a reservoir 105 contains aqueous glue 106 and a doctor blade 107 ensures the deposition of a continuous coating layer 108 of aqueous glue on the conveyor belt 100.
  • the aqueous adhesive 106 used is based on starch, dextrin, sodium carboxymethyl cellulose, sodium carboxyethyl cellulose, high molecular weight polyethylene glycol (greater than 4,000) or polyvinyl pyrolydone, etc. It must have a good tack capacity under the conditions of deposition at room temperature on the conveyor belt 100.
  • a composition comprising an equal distribution by mass of water and of adhesive and the quantity of material deposited is of the order of 1 to 4 g / m 2 .
  • the textile support is fed from a roller 109.
  • a cylinder-counter-cylinder assembly 110, 111 located on either side of the conveyor belt 100 and the textile support 2 ensures the contacting of one with the other and therefore the bonding of the textile support to the conveyor belt 100.
  • Two layers of polymer coating distributed in points 4, 5 are successively applied to the textile support 2 while it is glued to the conveyor belt 100 by rotary frames 112 and 113.
  • the axes of these frames are mutually parallel and perpendicular to the direction of travel of the conveyor belt 100 which has been seen to be stabilized.
  • rotary frames allow the implementation of wet coating processes in which very fine powders of polymers, in aqueous dispersion, are applied to the textile support by a hollow doctor installed inside the rotary roller which has a thin perforated wall.
  • the doctor blade passes the dough through the cylinder openings.
  • the speed of rotation of the second rotary frame 113, its angular setting and the speed of advance of the support belt 100 are preferably controlled by the speed of rotation of the first rotary frame 112.
  • This control is achieved by an opto-electronic device, schematically represented in FIG. 4.
  • Each of the cylinders carries on its periphery reference marks, respectively 118, 119, read by optical sensors 120, 121.
  • the electrical information supplied by these sensors is transmitted to a processing unit 122 which controls, via the motors 123, 124, 125, the speeds of rotation of the rotary frames 112 and 113 and the speed of advance of the conveyor belt 100.
  • This slaving is carried out so that the peripheral speeds of the rotary frames 112 and 113 are equal to the speed of advance of the conveyor belt. transport 100 and therefore of the textile support 2. Each point 5 of the upper layer is thus deposited on a point 4 of the lower layer.
  • An opto-electronic system enables this control to be carried out under good conditions. It can also be electromechanical, electronic or electromagnetic.
  • a second oven 150 is for this purpose placed between the rotary frame 112 and the rotary frame 113.
  • thermo-adhesive polymers having been deposited on the textile support 2, the conveyor belt 100-coated textile support 2, 3, 4 assembly passes through a continuous drying oven 126.
  • This oven is intended to ensure the evaporation of the water and the dispersion which form the paste deposited by coating with thermo-adhesive polymers.
  • the temperature of this oven is close to the melting temperature of the polymers, it can be a hot air oven, a microwave oven or a radiant oven, and it is optionally ventilated.
  • the coated textile support 2, 4, 5 is separated from the conveyor belt 100 and then cooled. It is then stored on a roller 127.
  • the polymer sublayer 4 deposited on the textile support 2 is subjected to UV, microwave, HF treatment or to electronic bombardment before the deposition of the upper layer 5.
  • UV, microwave, HF treatment or to electronic bombardment ensure the increase in the viscosity of the sublayer 4 and thus avoid mixing of the upper part of the sublayer 4 with the base of layer 5 of thermo-adhesive polymers.
  • the conveyor belt 100 When the conveyor belt 100 forms a continuous loop, it is subjected to a scrubbing wash of the brush 128, itself immersed in the bath 129.
  • the rotary frames 112 and 113 have, as indicated above, perforations which form the points, respectively 4, 5, during the coating of the sublayer and of the upper layer.
  • the dimension of these perforations determines the dimensions of the points formed.
  • the frame rotary 113 is fed with a foam containing polymers.
  • This foam is formed in a mixer fed with a pasty dispersion of polymers, to which is added a surfactant and into which air is injected.
  • the foam thus formed is deposited by the rotary frame.
  • the air bubbles formed by the foam burst, the corresponding air escapes at the same time as the dispersants and leaves the thermoadhesive polymers.
  • the sublayer 4 of the fusible interlining preferably has a small thickness. This thickness, determined by the thickness of the first rotary frame 112, is preferably between 0.05mm and 0.20mm.
  • the sublayer is deposited in the form of a dispersion in simple aqueous phase consisting of a water-thickener-polymer mixture.
  • the polymers are crosslinking. The best results have been obtained with dispersions based on crosslinkable silicones, polyfluoreas, crosslinkable polyurethanes, polyacrylates.
  • An important role of the sublayer is to prevent the penetration of the upper layer through the textile support 2 while retaining the physical textile properties of this textile support 2.
  • the upper layer 5 preferably has a thickness of between 0.4mm and 0.8mm.
  • thermo-adhesive polymer is a polyamide, a copolyamide, a polyester, a copolyester, a polyurethane, a polyethylene ... or a mixture of these different polymers.
  • reactive systems such as styrene-ethyl acrylate copolymers, melamines, aziridine, isocyanates, unsaturated polyesters, epoxy resins or, more generally, can also be used as thermoadhesive polymers. Any polymer with reactive function.
  • the dispersion is a mixture of solvents, plasticizers, fatty acids, ammonium polyacrylates. It also includes a reology agent and a thixotropic agent.
  • the mixture of these various components constitutes a paste which must be homogeneous and the components of which are not liable to separate from each other during the implementation of the process.
  • the viscosity of this paste is reduced during its passage in the frame then it increases and the point takes volume during the passage in the oven.
  • the thickness of the second frame 113 which gives the thickness of the upper layer depends on the density of points of the coating.
  • the thickness of the second frame 113 is preferably between 10 and 13 hundredths of a millimeter.
  • the mass of polymers deposited in the sublayer is between 1 and 4g / m 2 and the mass of polymers deposited in the upper layer is between 4 and 14g / m 2 .
  • the implementation of the invention allows the production of fusible linings on which the points of polymers are distributed with precision. They provide significant bulk, large volume, good flexibility and good resilience to the textile complex in which they participate.

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  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Details Of Garments (AREA)
  • Manufacturing Of Multi-Layer Textile Fabrics (AREA)
  • Treatments For Attaching Organic Compounds To Fibrous Goods (AREA)
  • Chemical Or Physical Treatment Of Fibers (AREA)
  • Adhesives Or Adhesive Processes (AREA)
  • Vehicle Interior And Exterior Ornaments, Soundproofing, And Insulation (AREA)
  • Nonwoven Fabrics (AREA)
  • Treatment Of Fiber Materials (AREA)
  • Paper (AREA)
  • Shaping Of Tube Ends By Bending Or Straightening (AREA)
  • Laminated Bodies (AREA)

Abstract

The invention relates more precisely to thermobonded lining materials (1) in which a textile support (2) receives a coating of hot-melt adhesive polymers distributed pointwise (3). <IMAGE>

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

Ces entoilages sont 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... peuvent être maîtrisées.These linings are 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 ... can be controlled.

Ces propriétés du complexe résultent de la nature de la draperie, de la nature du textile support 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, the nature of the textile fabric supporting the interlining and also from the nature, composition and method 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 rouleau, n'adhèrent pas les unes avec les autres. L'entoilage thermocollant ne doit pas présenter de "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 any "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 of 10 to 30 seconds.

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

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.During this operation, it is necessary to prevent these thermo-adhesive polymers from piercing the drapery or producing returns, that is to say piercing the textile support of the interlining.

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

Le document TEINTEX, vol. 37, n° 11, 1972, PARIS (pages 601-606) enseigne les produits utilisés dans le thermocollage et les procédés et matériels pour les mettre en oeuvre.The TEINTEX document, vol. 37, n ° 11, 1972, PARIS (pages 601-606) teaches the products used in fusing and the processes and materials for implementing them.

Dès l'origine de l'utilisation d'entoilages thermocollants, les phénomènes de traversées et de retours ont été constatés et de nombreuses tentatives ont été faites depuis pour éviter ces défauts.From the origin of the use of fusible interlining, the phenomena of crossings and returns have been observed and many attempts have been made since to avoid these defects.

En particulier, on a cherché à déposer sur un support textile plusieurs couches successives de polymères ayant des propriétés différentes.In particular, attempts have been made to deposit on a textile support several successive layers of polymers having different properties.

Le brevet américain US-A-2 631 947 décrit un tissu thermocollant destiné au raccommodage qui comporte un support textile et deux couches d'adhésif, continues, de viscosité différentes. La couche au contact du support a une température de fusion supérieure à celle de la couche de surface. Ainsi, l'adhésion du tissu sur l'étoffe à réparer est facilitée, sa tenue lors des lavages successifs est améliorée et les traversées sont évitées.American patent US-A-2,631,947 describes a fusible fabric intended for mending which comprises a textile support and two layers of adhesive, continuous, of different viscosity. The layer in contact with the support has a higher melting temperature than that of the surface layer. Thus, the adhesion of the fabric to the fabric to be repaired is facilitated, its hold during successive washings is improved and crossings are avoided.

Les documents GB-A-1 133 331 et GB-A-1 360 496 proposent un entoilage fusible destiné à l'industrie vestimentaire comprenant un textile revêtu d'une couche adhésive discontinue constituée d'un premier matériau thermo-plastique, chaque spot étant ensuite revêtu d'un second matériau polymérique pouvant être thermo-réticulable ou avoir un point de fusion supérieur au premier matériau.The documents GB-A-1 133 331 and GB-A-1 360 496 propose a fusible interlining intended for the clothing industry comprising a textile coated with a discontinuous adhesive layer made of a first thermoplastic material, each spot being then coated with a second polymeric material which can be heat-crosslinkable or have a higher melting point than the first material.

Plus récemment, selon le brevet FR-A-2 177 038, il a été proposé de réaliser un entoilage en déposant successivement deux couches d'adhésif sur un support. La première couche est réalisée par enduction par sérigraphie d'une dispersion visqueuse contenant des polymères à haute viscosité et/ou à haut point de fusion.More recently, according to patent FR-A-2 177 038, it has been proposed to produce a stabilizer by successively depositing two layers of adhesive on a support. The first layer is produced by coating, by screen printing, a viscous dispersion containing polymers with high viscosity and / or high melting point.

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.

La réalisation d'une deuxième couche par saupoudrage sur une première couche visqueuse ne permet pas d'obtenir une bonne régularité de la deuxième couche. De plus, les points formés par cette deuxième couche débordent le plus souvent des points formés par la première couche, ce qui entraîne des traversées lors du contrecollage.The production of a second layer by dusting on a first viscous layer does not make it possible to obtain good regularity of the second layer. In addition, the points formed by this second layer more often than beyond the points formed by the first layer, which leads to crossings during laminating.

Selon les documents FR-A-2 318 914 et FR-A-2 346 058, il a été proposé d'enduire, simultanément, le support textile de deux couches de polymères sous forme de poudre sèche à l'aide d'un cylindre gravé en creux. La sous-couche est ici aussi composée de polymères à plus haute viscosité et/ou à plus haut point de fusion que ceux de la deuxième couche.According to documents FR-A-2 318 914 and FR-A-2 346 058, it has been proposed to coat the textile support simultaneously with two layers of polymers in the form of dry powder using a cylinder debossed. The sub-layer is here also composed of polymers with higher viscosity and / or higher melting point than those of the second layer.

Les enductions réalisées par voie sèche par cylindre gravé en creux sont affectées par un manque de cohésion mécanique des deux couches de polymères l'une par rapport à l'autre. L'interface des deux couches constitue une zone de faiblesse et les vêtements réalisés avec des entoilages de ce type supportent mal les traitements d'entretien.The coatings produced by the dry process using a hollow engraved cylinder are affected by a lack of mechanical cohesion of the two layers of polymers with respect to each other. The interface of the two layers constitutes a zone of weakness and the clothes made with interlining of this type do not support maintenance treatments.

Selon le brevet allemand DE-C-2 461 845.9, on a proposé l'enduction simultanée par cadre sérigraphique de deux couches de dispersion visqueuse contenant des polymères de viscosité et/ou de point de fusion différents. Les deux pâtes sont délivrées dans le même cadre par deux racles séparées juxtaposées.According to German patent DE-C-2 461 845.9, the simultaneous coating by screen printing has been proposed of two layers of viscous dispersion containing polymers of different viscosity and / or melting point. The two pastes are delivered in the same frame by two separate doctor blades juxtaposed.

Cette technique est extrêmement délicate pour ne pas dire impossible à mettre en oeuvre. L'expérience a montré qu'il n'est pas possible de garnir les trous des cylindres de gravure sans que toute ou partie de la dispersion ne se dépose sur le support textile. L'enduction crée alors, sur le support textile, des traînées d'un mélange des deux dispersions qui ne permet pas d'obtenir un entoilage de qualité.This technique is extremely delicate, not to say impossible to implement. Experience has shown that it is not possible to fill the holes of the engraving cylinders without all or part of the dispersion being deposited on the textile support. The coating then creates, on the textile support, streaks of a mixture of the two dispersions which does not make it possible to obtain a quality interlining.

Enfin, selon le brevet FR-A-2 576 191 appartenant au déposant de la présente demande, il est proposé de réaliser des enductions successives de deux couches de polymères, de viscosité et/ou de point de fusion différents, ces deux couches sont déposées de part et d'autre du support textile.Finally, according to patent FR-A-2 576 191 belonging to the applicant of this application, it is proposed to carry out successive coatings of two layers of polymers, of different viscosity and / or melting point, these two layers are deposited on either side of the textile support.

Le but de la présente invention est donc la réalisation d'un entoilage thermocollant et de son procédé de fabrication qui permettent une exploitation industrielle simple permettant d'obtenir des produits de qualité.The object of the present invention is therefore the production of a fusible interlining and its manufacturing process which allow simple industrial operation making it possible to obtain quality products.

A cet effet, l'invention concerne un procédé de fabrication d'entoilages thermocollants dans lequel un support textile reçoit une enduction par voie humide de polymères thermo-adhésifs répartis en points.To this end, the invention relates to a process for manufacturing fusible linings in which a textile support receives a wet coating of thermo-adhesive polymers distributed in points.

Selon l'invention :

  • le support textile (2) est collé sur un tapis de transport (100) présentant une très bonne stabilité dimensionnelle ;
  • une sous-couche (4) de polymères thermostables répartie en points est déposée sous forme de pâte ou de mousse sur le support textile (2) par un premier cadre rotatif (112) ;
  • les polymères de la sous-couche (4) sont au moins séchés et/ou partiellement réticulés après leur dépôt sur le support textile (2) ;
  • une couche supérieure (5) de polymères thermoadhésifs ayant une répartition en points identique à celle de la sous-couche (4) est déposée sous forme de pâte ou de mousse sur celle-ci par un deuxième cadre rotatif (113) ; la dimension de la perforation du deuxième cadre rotatif (113) étant inférieure à celle de la perforation du premier cadre rotatif (112) ; la vitesse de rotation du deuxième cadre rotatif (113), son calage angulaire et la vitesse d'avancement du tapis support (100) étant asservis à la vitesse de rotation du premier cadre rotatif (112) de telle sorte que les vitesses périphériques des cadres (112, 113) soient égales à la vitesse d'avancement du tapis support (100) et que chaque point de la couche supérieure (5) soit déposé sur un point de la couche inférieure (4) ;
  • le support textile enduit (2, 4, 5) est séparé du tapis de transport (100) ;
  • le support textile (2, 4, 5) traverse ensuite un four de séchage continu ; puis est refroidi.
According to the invention:
  • the textile support (2) is glued to a conveyor belt (100) having very good dimensional stability;
  • a sublayer (4) of thermostable polymers distributed in points is deposited in the form of paste or foam on the textile support (2) by a first rotary frame (112);
  • the polymers of the sublayer (4) are at least dried and / or partially crosslinked after their deposition on the textile support (2);
  • an upper layer (5) of thermoadhesive polymers having a distribution in points identical to that of the underlayer (4) is deposited in the form of paste or foam thereon by a second rotary frame (113); the dimension of the perforation of the second rotary frame (113) being less than that of the perforation of the first rotary frame (112); the speed of rotation of the second rotary frame (113), its angular setting and the speed of advancement of the support belt (100) being controlled by the speed of rotation of the first rotary frame (112) so that the peripheral speeds of the frames (112, 113) are equal to the speed of advance of the support mat (100) and that each point of the upper layer (5) is deposited on a point of the lower layer (4);
  • the coated textile support (2, 4, 5) is separated from the conveyor belt (100);
  • the textile support (2, 4, 5) then passes through a continuous drying oven; then is cooled.

La sous-couche peut contenir au moins un agent apte à réagir avec les polymères thermo-adhésifs de la couche supérieure et la sous-couche est séchée et/ou partiellement réticulée après son dépôt sur le support textile et avant le dépôt sur la couche supérieure.The undercoat may contain at least one agent capable of reacting with the thermo-adhesive polymers of the upper layer and the undercoat is dried and / or partially crosslinked after its deposition on the textile support and before deposition on the upper layer .

La sous-couche peut être soumise à un traitement U.V., micro-ondes, H.F., ou à un bombardement électronique avant le dépôt de la couche supérieure.The sub-layer can be subjected to UV, microwave or H.F. treatment, or to electronic bombardment before the deposition of the upper layer.

L'invention concerne également un entoilage thermocollant comportant les caractéristiques définies dans la revendication 6.The invention also relates to a fusible interfacing comprising the characteristics defined in claim 6.

De manière préférée, les propriétés thermo-adhésives de la couche supérieure varient progressivement depuis la zone de contact avec la sous-couche jusqu'à sa zone supérieure.Preferably, the thermo-adhesive properties of the upper layer vary progressively from the zone of contact with the sub-layer to its upper zone.

Dans un mode de réalisation préféré, la sous-couche comporte des polymères appartenant à l'ensemble formé par les silicones réticulables, les polyfluorés, les polyuréthanes réticulables et les polyacrylates.In a preferred embodiment, the sublayer comprises polymers belonging to the group formed by crosslinkable silicones, polyfluoreas, crosslinkable polyurethanes and polyacrylates.

La couche supérieure quant à elle comporte de préférence des polymères appartenant à l'ensemble formé par les polyamides, les copolyamides, les polyesters, copolyesters, les polyuréthanes et les polyéthylènes.The upper layer, for its part, preferably comprises polymers belonging to the group formed by polyamides, copolyamides, polyesters, copolyesters, polyurethanes and polyethylenes.

Selon un autre mode de réalisation préféré, la couche supérieure comporte des polymères à fonction réactive appartenant à l'ensemble formé par les copolymères styrène-acrylate d'éthyle, les mélamines, l'aziridine, les isocyanates, les polyesters insaturés et les résines époxy.According to another preferred embodiment, the upper layer comprises reactive polymers belonging to the group formed by styrene-ethyl acrylate copolymers, melamines, aziridine, isocyanates, unsaturated polyesters and epoxy resins .

L'invention sera décrite plus en détail en référence aux dessins annexés dans lesquels :

  • La figure 1 est une représentation schématique de l'entoilage, objet de l'invention.
  • La figure 2 est une représentation schématique de l'appareillage de l'invention.
  • La figure 3 est une représentation schématique du procédé d'asservissement mis en oeuvre dans l'invention.
The invention will be described in more detail with reference to the accompanying drawings in which:
  • Figure 1 is a schematic representation of the interlining, object of the invention.
  • Figure 2 is a schematic representation of the apparatus of the invention.
  • FIG. 3 is a schematic representation of the control method implemented in the invention.

L'entoilage 1 comporte un support textile 2 et des points thermocollants 3.The interlining 1 comprises a textile support 2 and fusible dots 3.

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, then subjected to finishing operations before being used as a coating support.

Des tissus de coton ou de fibranne peuvent être utilisés. Toutefois, les meilleurs résultats ont été obtenus avec des tissus en polyester texturé ou des voiles non tissés dont le liage évite le risque de peluchage. Plus généralement, l'utilisation d'un tissu en fils synthétiques multifilaments continus du type plat ou texturé est particulièrement bien adapté.Cotton or fibranne fabrics can be used. However, the best results have been obtained with textured polyester fabrics or non-woven veils whose binding avoids the risk of linting. More generally, the use of a fabric of synthetic threads Continuous multifilaments of the flat or textured type is particularly well suited.

Dans une première étape, le support textile 2 est collé sur un tapis de transport 100.In a first step, the textile support 2 is glued to a conveyor belt 100.

A cet effet, le tapis de transport 100, qui forme de préférence une boucle fermée, circule sur des cylindres de transport 101-104.For this purpose, the conveyor belt 100, which preferably forms a closed loop, circulates on transport cylinders 101-104.

Le tapis de transport 100 est, de préférence, réalisé à partir d'un textile en polyester, recouvert d'une couche ou d'un enrobage de polymères silicones réticulés. Il est important que ce tapis présente une très bonne stabilité dimensionnelle, en particulier dans le sens longitudinal. En effet, comme nous le verrons plus loin, il est soumis à des forces de traction et à des écarts de température importants qui ne doivent pas engendrer de déplacements relatifs des points du support textile 2 collé sur lui. Il peut également être réalisé à partir d'un tissu en fibres de verre ou de fibres aramide également recouvert d'une couche ou d'un enrobage de polymères silicones réticulés.The conveyor belt 100 is preferably made from a polyester textile, covered with a layer or a coating of crosslinked silicone polymers. It is important that this mat has very good dimensional stability, especially in the longitudinal direction. Indeed, as we will see later, it is subjected to tensile forces and significant temperature differences which must not cause relative displacements of the points of the textile support 2 glued on it. It can also be produced from a glass fiber or aramid fiber fabric also covered with a layer or a coating of crosslinked silicone polymers.

Les cylindres de transport 101-104 associés à des moyens de guidage (non représentés) assurent la circulation du tapis perpendiculairement aux axes des cadres 112 et 113 et assurent la stabilité de la position du tapis 100 parallèlement à ces axes. Un cylindre dit de déformation peut être mis en oeuvre pour faciliter ce réglage.The transport cylinders 101-104 associated with guide means (not shown) ensure the movement of the belt perpendicular to the axes of the frames 112 and 113 and ensure the stability of the position of the belt 100 parallel to these axes. A so-called deformation cylinder can be used to facilitate this adjustment.

Un réservoir 105 contient de la colle aqueuse 106 et une racle 107 assure le dépôt d'une couche d'enduction continue 108 de colle aqueuse sur le tapis de transport 100.A reservoir 105 contains aqueous glue 106 and a doctor blade 107 ensures the deposition of a continuous coating layer 108 of aqueous glue on the conveyor belt 100.

La colle aqueuse 106 mise en oeuvre est à base d'amidon, de dextrine, de carboxyméthyle cellulose de sodium, de carboxyéthyl cellulose de sodium, de polyéthylène glycol à haute masse moléculaire (supérieure à 4.000) ou de polyvinyle pyrolydone, etc. Elle doit avoir une bonne capacité d'adhésivité ("tack") dans les conditions de dépôt à la température ambiante sur le tapis de transport 100.The aqueous adhesive 106 used is based on starch, dextrin, sodium carboxymethyl cellulose, sodium carboxyethyl cellulose, high molecular weight polyethylene glycol (greater than 4,000) or polyvinyl pyrolydone, etc. It must have a good tack capacity under the conditions of deposition at room temperature on the conveyor belt 100.

De préférence, on utilise une composition comportant une répartition égale en masse d'eau et d'adhésif et la quantité de matière déposée est de l'ordre de 1 à 4gr/m2.Preferably, a composition is used comprising an equal distribution by mass of water and of adhesive and the quantity of material deposited is of the order of 1 to 4 g / m 2 .

Le support textile est alimenté à partir d'un rouleau 109. Un ensemble cylindre-contre-cylindre 110, 111 situé de part et d'autre du tapis de transport 100 et du support textile 2 assure la mise en contact de l'un avec l'autre et donc le collage du support textile sur le tapis de transport 100.The textile support is fed from a roller 109. A cylinder-counter-cylinder assembly 110, 111 located on either side of the conveyor belt 100 and the textile support 2 ensures the contacting of one with the other and therefore the bonding of the textile support to the conveyor belt 100.

Deux couches d'enduction de polymères réparties en points 4, 5 sont successivement appliquées sur le support textile 2 alors qu'il est collé sur le tapis de transport 100 par des cadres rotatifs 112 et 113. Les axes de ces cadres sont parallèles entre eux et perpendiculaires à la direction de défilement du tapis de transport 100 dont on a vu qu'elle est stabilisée.Two layers of polymer coating distributed in points 4, 5 are successively applied to the textile support 2 while it is glued to the conveyor belt 100 by rotary frames 112 and 113. The axes of these frames are mutually parallel and perpendicular to the direction of travel of the conveyor belt 100 which has been seen to be stabilized.

Ces cadres rotatifs, en eux-mêmes connus, coopèrent avec des racles 114 et 115, d'une part et avec des contre-cylindres 116, 117, d'autre part, pour réaliser les enductions par points.These rotary frames, in themselves known, cooperate with doctor blades 114 and 115, on the one hand and with counter-cylinders 116, 117, on the other hand, to produce the point coatings.

Ces cadres rotatifs permettent la mise en oeuvre des procédés d'enduction par voie humide dans lesquels des poudres très fines de polymères, en dispersion aqueuse, sont appliquées sur le support textile par une racle creuse installée à l'intérieur du rouleau rotatif qui a une paroi mince perforée. La racle produit le passage de la pâte à travers les ouvertures du cylindre.These rotary frames allow the implementation of wet coating processes in which very fine powders of polymers, in aqueous dispersion, are applied to the textile support by a hollow doctor installed inside the rotary roller which has a thin perforated wall. The doctor blade passes the dough through the cylinder openings.

C'est un apport important de l'invention d'avoir cherché et trouvé les moyens permettant d'assurer le dépôt successif de deux couches d'enduction réparties par points, chaque point 5 de la couche supérieure étant déposé sur un point de la sous-couche 4.It is an important contribution of the invention to have sought and found the means making it possible to ensure the successive deposition of two coating layers distributed by points, each point 5 of the upper layer being deposited on a point of the sub -layer 4.

Afin d'obtenir cette coincidence, la vitesse de rotation du deuxième cadre rotatif 113, son calage angulaire et la vitesse d'avancement du tapis support 100 sont de préférence asservis à la vitesse de rotation du premier cadre rotatif 112. Cet asservissement est réalisé par un dispositif opto-électronique, schématiquement représenté sur la figure 4. Chacun des cylindres porte sur sa périphérie des marques de repère, respectivement 118, 119, lues par des capteurs optiques 120, 121. Les informations électriques fournies par ces capteurs sont transmises à une unité de traitement 122 qui commande, par l'intermédiaire des moteurs 123, 124, 125, les vitesses de rotation des cadres rotatifs 112 et 113 et la vitesse d'avancement du tapis de transport 100.In order to obtain this coincidence, the speed of rotation of the second rotary frame 113, its angular setting and the speed of advance of the support belt 100 are preferably controlled by the speed of rotation of the first rotary frame 112. This control is achieved by an opto-electronic device, schematically represented in FIG. 4. Each of the cylinders carries on its periphery reference marks, respectively 118, 119, read by optical sensors 120, 121. The electrical information supplied by these sensors is transmitted to a processing unit 122 which controls, via the motors 123, 124, 125, the speeds of rotation of the rotary frames 112 and 113 and the speed of advance of the conveyor belt 100.

Cet asservissement est réalisé de telle sorte que les vitesses périphériques des cadres rotatifs 112 et 113 soient égales à la vitesse d'avancement du tapis de transport 100 et donc du support textile 2. Chaque point 5 de la couche supérieure est ainsi déposé sur un point 4 de la couche inférieure.This slaving is carried out so that the peripheral speeds of the rotary frames 112 and 113 are equal to the speed of advance of the conveyor belt. transport 100 and therefore of the textile support 2. Each point 5 of the upper layer is thus deposited on a point 4 of the lower layer.

Un système opto-électronique permet de réaliser cet asservissement dans de bonnes conditions. Il peut être aussi électromécanique, électronique ou électromagnétique.An opto-electronic system enables this control to be carried out under good conditions. It can also be electromechanical, electronic or electromagnetic.

Le séchage de la sous-couche, avant application de la couche supérieure étant recherché, un deuxième four 150 est à cet effet placé entre le cadre rotatif 112 et le cadre rotatif 113.The drying of the sub-layer, before application of the upper layer being sought, a second oven 150 is for this purpose placed between the rotary frame 112 and the rotary frame 113.

La sous-couche de polymères 4 puis la couche supérieure 5 de polymères thermo-adhésifs ayant été déposées sur le support textile 2, l'ensemble tapis de transport 100-support textile enduit 2, 3, 4 traverse un four de séchage continu 126. Ce four est destiné à assurer l'évaporation de l'eau et de la dispersion qui forment la pâte déposée par enduction avec les polymères thermo-adhésifs.The polymer underlay 4 and then the upper layer 5 of thermo-adhesive polymers having been deposited on the textile support 2, the conveyor belt 100-coated textile support 2, 3, 4 assembly passes through a continuous drying oven 126. This oven is intended to ensure the evaporation of the water and the dispersion which form the paste deposited by coating with thermo-adhesive polymers.

De préférence, la température de ce four est proche de la température de fusion des polymères, ce peut être un four à air chaud, un four micro-ondes ou un four radiant, et il est éventuellement ventilé.Preferably, the temperature of this oven is close to the melting temperature of the polymers, it can be a hot air oven, a microwave oven or a radiant oven, and it is optionally ventilated.

De bons résultats ont été obtenus avec un temps de séchage de l'ordre de 10 secondes.Good results have been obtained with a drying time of the order of 10 seconds.

Avant passage dans le four de séchage 126, le support textile enduit 2, 4, 5 est séparé du tapis de transport 100 puis refroidi. Il est ensuite stocké sur un rouleau 127.Before passing through the drying oven 126, the coated textile support 2, 4, 5 is separated from the conveyor belt 100 and then cooled. It is then stored on a roller 127.

Dans une autre variante, la sous-couche 4 de polymères déposée sur le support textile 2 est soumise à un traitement U.V., micro-ondes, H.F. ou à un bombardement électronique avant le dépôt de la couche supérieure 5. Ces différents traitements de surface assurent l'augmentation de la viscosité de la sous-couche 4 et évitent ainsi le mélange de la partie supérieure de la sous-couche 4 avec la base de la couche 5 de polymères thermo-adhésifs.In another variant, the polymer sublayer 4 deposited on the textile support 2 is subjected to UV, microwave, HF treatment or to electronic bombardment before the deposition of the upper layer 5. These various surface treatments ensure the increase in the viscosity of the sublayer 4 and thus avoid mixing of the upper part of the sublayer 4 with the base of layer 5 of thermo-adhesive polymers.

Lorsque le tapis de transport 100 forme une boucle continue, celui-ci est soumis à un lavage par frottement de la brosse 128, elle-même immergée dans le bain 129.When the conveyor belt 100 forms a continuous loop, it is subjected to a scrubbing wash of the brush 128, itself immersed in the bath 129.

Les cadres rotatifs 112 et 113 comportent, comme il a été indiqué plus haut des perforations qui forment les points, respectivement 4, 5, lors de l'enduction de la sous-couche et de la couche supérieure.The rotary frames 112 and 113 have, as indicated above, perforations which form the points, respectively 4, 5, during the coating of the sublayer and of the upper layer.

La dimension de ces perforations détermine les dimensions des points formés.The dimension of these perforations determines the dimensions of the points formed.

On a jusqu'ici décrit le procédé de fabrication de l'entoilage à partir d'une pâte de polymères. Afin d'augmenter le volume des points 3 et, en particulier le volume de la couche supérieure de polymères 5, le cadre rotatif 113 est alimenté avec une mousse contenant des po ymères. Cette mousse est formée dans un mélangeur alimenté d'une dispersion pâteuse de polymères, à laquelle est adjoint un agent tensio-actif et dans laquelle est injecté de l'air.The process for manufacturing the interlining from a polymer paste has so far been described. In order to increase the volume of the points 3 and, in particular the volume of the upper layer of polymers 5, the frame rotary 113 is fed with a foam containing polymers. This foam is formed in a mixer fed with a pasty dispersion of polymers, to which is added a surfactant and into which air is injected.

La mousse ainsi formée est déposée par le cadre rotatif. Lors du passage de l'enduction dans le four 126, les bulles d'air formées par la mousse éclatent, l'air correspondant s'échappe en même temps que les produits dispersant et laissent subsister les polymères thermoadhésifs.The foam thus formed is deposited by the rotary frame. When the coating passes through the oven 126, the air bubbles formed by the foam burst, the corresponding air escapes at the same time as the dispersants and leaves the thermoadhesive polymers.

L'utilisation de cadres d'impression précisément gravés est importante pour la qualité du résultat. Il est important que le deuxième cadre rotatif 113 soit une réplique parfaite du premier cadre 112. Cela signifie que les centres des gravures correspondant à chacun des points d'enduction 4, 5 se correspondent, même si les dimensions de chaque point 5 du deuxième cadre rotatif 113 sont inférieures à celles du point 4 du premier cadre rotatif 112 comme il a été indiqué plus haut. Différentes techniques de fabrication des cadres d'impression peuvent être mises en oeuvre pour cette réalisation :

  • Ils peuvent être réalisés par moletage. Une matrice, destinée à la réalisation des cadres, est alors gravée par une mollette de faible diamètre portant le motif de la gravure. Cette matrice est ensuite portée dans un bain électrolytique pour permettre la fabrication des cadres.
  • Selon une deuxième technique, le motif de la gravure est réalisé par un ordinateur. Les coordonnées de ce motif sont utilisées pour commander un laser à commande numérique qui grave sur un manchon, préalablement garni de résine réticulée, les zones de dépôt électrolytique qui entoureront les trous de passage formés sur les cadres.
The use of precisely engraved print frames is important for the quality of the result. It is important that the second rotary frame 113 is a perfect replica of the first frame 112. This means that the centers of the engravings corresponding to each of the coating points 4, 5 correspond, even if the dimensions of each point 5 of the second frame rotary 113 are less than those of point 4 of the first rotary frame 112 as indicated above. Different techniques for manufacturing printing frames can be used for this realization:
  • They can be made by knurling. A matrix, intended for the production of the frames, is then engraved by a small diameter wheel bearing the pattern of the engraving. This matrix is then carried in an electrolytic bath to allow the manufacture of the frames.
  • According to a second technique, the pattern of the engraving is produced by a computer. The contact details of this pattern is used to control a digitally controlled laser which etches on a sleeve, previously lined with crosslinked resin, the areas of electrolytic deposition which will surround the through holes formed on the frames.

Ces techniques permettent d'obtenir des dessins avec une précision de l'ordre de 10 micronmètres pour des diamètres de trous de l'ordre de 500 à 1.000 micronmètres.These techniques make it possible to obtain drawings with an accuracy of the order of 10 micronmeters for hole diameters of the order of 500 to 1,000 micronmeters.

La sous-couche 4 de l'entoilage thermocollant a, de préférence, une faible épaisseur. Cette épaisseur, déterminée par l'épaisseur du premier cadre rotatif 112, est de préférence comprise entre 0,05mm et 0,20mm. La sous-couche est déposée sous forme d'une dispersion en phase aqueuse simple constituée d'un mélange eau-épaississant-polymères. De préférence, les polymères sont réticulants. Les meilleurs résultats ont été obtenus avec des dispersions à base de silicones réticulables, des polyfluorés, des polyuréthanes réticulables, des polyacrylates.The sublayer 4 of the fusible interlining preferably has a small thickness. This thickness, determined by the thickness of the first rotary frame 112, is preferably between 0.05mm and 0.20mm. The sublayer is deposited in the form of a dispersion in simple aqueous phase consisting of a water-thickener-polymer mixture. Preferably, the polymers are crosslinking. The best results have been obtained with dispersions based on crosslinkable silicones, polyfluoreas, crosslinkable polyurethanes, polyacrylates.

Un rôle important de la sous-couche est d'empêcher la pénétration de la couche supérieure au travers du support textile 2 tout en conservant les propriétés physiques textiles de ce support textile 2.An important role of the sublayer is to prevent the penetration of the upper layer through the textile support 2 while retaining the physical textile properties of this textile support 2.

La couche supérieure 5 a de préférence une épaisseur comprise entre 0,4mm et 0,8mm.The upper layer 5 preferably has a thickness of between 0.4mm and 0.8mm.

La dispersion aqueuse utilisée pour l'enduction de la couche supérieure a, de préférence, la composition suivante (en masse) :

  • 40-60% d'eau
  • 25-35% de polymères thermo-adhésifs
  • 1 à 2% d'épaississant de polyacrylates ammoniaqués
  • 25-35% de dispersion
The aqueous dispersion used for coating the upper layer preferably has the following composition (by mass):
  • 40-60% water
  • 25-35% thermo-adhesive polymers
  • 1 to 2% thickener of ammoniacal polyacrylates
  • 25-35% dispersion

Le polymère thermo-adhésif est un polyamide, un copolyamide, un polyester, un copolyester, un polyuréthane, un polyéthylène... ou un mélange de ces différents polymères.The thermo-adhesive polymer is a polyamide, a copolyamide, a polyester, a copolyester, a polyurethane, a polyethylene ... or a mixture of these different polymers.

Dans un autre mode de réalisation, on peut également utiliser comme polymères thermoadhésifs des systèmes réactifs tels que des copolymères styrène-acrylate d'éthyle, des mélamines, l'aziridine, des isocyanates, des polyesters insaturés, des résines époxy ou, plus généralement, tout polymère à fonction réactive.In another embodiment, reactive systems such as styrene-ethyl acrylate copolymers, melamines, aziridine, isocyanates, unsaturated polyesters, epoxy resins or, more generally, can also be used as thermoadhesive polymers. any polymer with reactive function.

La dispersion est un mélange de solvants, de plastifiants, d'acides gras, de polyacrylates d'ammonium. Elle comporte également un agent de réologie et un agent thixotrope.The dispersion is a mixture of solvents, plasticizers, fatty acids, ammonium polyacrylates. It also includes a reology agent and a thixotropic agent.

Le mélange de ces différents composants constitue une pâte qui doit être homogène et dont les composants ne risquent pas de se séparer les uns des autres lors de la mise en oeuvre du procédé. La viscosité de cette pâte est diminuée lors de son passage dans le cadre puis elle augmente et le point prend du volume lors du passage dans le four.The mixture of these various components constitutes a paste which must be homogeneous and the components of which are not liable to separate from each other during the implementation of the process. The viscosity of this paste is reduced during its passage in the frame then it increases and the point takes volume during the passage in the oven.

L'épaisseur du deuxième cadre 113 qui donne l'épaisseur de la couche supérieure dépend de la densité de points de l'enduction.The thickness of the second frame 113 which gives the thickness of the upper layer depends on the density of points of the coating.

Pour une enduction de 30 Mesh (environ 200 points/m2), l'épaisseur du deuxième cadre 113 est, de préférence, comprise entre 10 et 13 centièmes de millimètres.For a coating of 30 mesh (approximately 200 points / m 2 ), the thickness of the second frame 113 is preferably between 10 and 13 hundredths of a millimeter.

Pour une enduction de 11 Mesh (20 points/m2), on utilisera un cadre ayant une épaisseur comprise entre 16 et 20 centièmes de millimètres.For a coating of 11 Mesh (20 points / m 2 ), use a frame having a thickness of between 16 and 20 hundredths of a millimeter.

La masse de polymères déposés dans la sous-couche est comprise entre 1 et 4g/m2 et la masse de polymères déposés dans la couche supérieure est comprise entre 4 et 14g/m2.The mass of polymers deposited in the sublayer is between 1 and 4g / m 2 and the mass of polymers deposited in the upper layer is between 4 and 14g / m 2 .

La mise en oeuvre d'invention permet la réalisation d'entoilages thermocollants sur lesquels les points de polymères sont répartis avec précision. Ils assurent un gonflant important, un grand volume, une bonne souplesse et une bonne résilience au complexe textile auquel ils participent.The implementation of the invention allows the production of fusible linings on which the points of polymers are distributed with precision. They provide significant bulk, large volume, good flexibility and good resilience to the textile complex in which they participate.

Claims (10)

  1. A process for manufacturing fusible interlinings (1) wherein a textile base fabric (2) receives a coating by wet process of thermoadhesive polymers distributed in points (3), characterised in that:
    - the textile base fabric (2) is glued on a conveying belt (100) having a very good dimensional stability;
    - an underlayer (4) of thermostable polymers distributed in points is deposited in the form of a paste or foam on the textile base fabric (2) by a first rotary screen (112);
    - the polymers of the underlayer (4) are at least dried and/or partially cross-linked after being deposited on the textile base fabric (2);
    - an upper layer (5) of thermoadhesive polymers having a distribution in points identical to that of the underlayer (4) is deposited in the form of a paste or foam on the latter by a second rotary screen (113); the size of the perforation of the second rotary screen (113) being inferior to that of the perforation of the first rotary screen (112); the speed of rotation of the second rotary screen (113), its angular inclination and the rate of feed of the base belt (100) being controlled by the speed of rotation of the first rotary screen (112) such that the peripheral speeds of the screens (112, 113) are equal to the rate of feed of the base belt (100) and each point of the upper layer (5) is deposited on a point of the lower layer (4);
    - the coated textile base fabric (2, 4, 5) is separated from the conveying belt (100);
    - the textile base fabric (2, 4, 5) then passes through a continuous drying oven; and is subsequently cooled.
  2. A process for manufacturing fusible interlinings according to claim 1, characterised in that the conveying belt (100) forms a closed loop.
  3. A process for manufacturing fusible interlinings according to claim 2, characterised in that the conveying belt (100) is washed after being separated from the coated textile base fabric (2, 4, 5) and before receiving a new element of the textile base fabric (2) to be coated.
  4. A process for manufacturing fusible interlinings according to any of claims 1 to 3, characterised in that the underlayer (4) contains at least one agent capable of chemically reacting with the thermoadhesive polymers of the upper layer (5).
  5. A process for manufacturing fusible interlinings according to any of claims 1 to 4, characterised in that the underlayer (4) undergoes a UV, microwave, or HF treatment or electron bombardment before the depositing of the upper layer (5).
  6. A fusible interlining comprising a textile base fabric (2) and a thermoadhesive coating distributed in points (3) on one of its faces, characterised in that each point of the coating comprises an underlayer (4) made up of dried and/or cross-linked thermostable polymers and an upper layer (5) made up of thermoadhesive polymers in solid state, the polymers of the underlayer (4) having been dried and/or cross-linked before the depositing of the upper layer (5), in conformity with the process according to any of claims 1 to 5, the upper layer (5) of each point having a surface inferior to that of the underlayer (4).
  7. A fusible interlining according to claim 6, characterised in that the thermoadhesive properties of the upper layer (5) vary progressively from the area of contact with the underlayer until its upper area.
  8. A fusible interlining according to claim 6 or 7, characterised in that the underlayer (4) comprises polymers belonging to the group made up of cross-linkable silicones, polyfluorides, cross-linkable polyurethanes and polyacrylates.
  9. A fusible interlining according to any of claims 6 to 8, characterised in that the upper layer (5) comprises polymers belonging to the group made up of polyamides, copolyamides, polyesters, copolyesters, polyurethanes and polyethylenes.
  10. A fusible interlining according to any of claims 6 to 8, characterised in that the upper layer (5) comprises polymers with a reactive function belonging to the group made up of ethyl styrene-acrylate copolymers, melamins, aziridine, isocyanates, unsaturated polyesters and epoxy resins.
EP91403494A 1991-02-05 1992-01-01 Thermobonded lining material and process for making the same Expired - Lifetime EP0503204B1 (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
FR9101287A FR2672313B1 (en) 1991-02-05 1991-02-05 PROCESS FOR THE MANUFACTURE OF THERMAL-STICKING LINES, THERMAL-STICKING LINING.
FR9101287 1991-02-05
AU11204/92A AU651532B2 (en) 1991-02-05 1992-02-24 Method for production of thermoadhesive fabric coverings thermoadhesive fabric covering

Publications (2)

Publication Number Publication Date
EP0503204A1 EP0503204A1 (en) 1992-09-16
EP0503204B1 true EP0503204B1 (en) 1996-09-18

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ID=25614397

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Application Number Title Priority Date Filing Date
EP91403494A Expired - Lifetime EP0503204B1 (en) 1991-02-05 1992-01-01 Thermobonded lining material and process for making the same

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US (1) US5290594A (en)
EP (1) EP0503204B1 (en)
JP (1) JP3222521B2 (en)
AT (1) ATE143068T1 (en)
AU (1) AU651532B2 (en)
CA (1) CA2058860C (en)
DE (1) DE69213791T2 (en)
DK (1) DK0503204T3 (en)
ES (1) ES2091312T3 (en)
FR (1) FR2672313B1 (en)
GR (1) GR3021402T3 (en)
TR (1) TR25557A (en)

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DE69319602T2 (en) * 1993-12-08 1999-03-18 Texil S.P.A., Livorno Ferraris Process for producing a woven / non-woven thermo-adhesive product, in particular for fixing interlining materials with points that can be melted at different temperatures, and system for carrying out this method
CN1157643A (en) 1994-08-09 1997-08-20 旭化成工业株式会社 Adhesive padding cloth, method of manufacturing same and bonding agent for adhesive cloths
FR2724186B1 (en) * 1994-09-02 1997-09-19 Picardie Lainiere METHOD FOR MANUFACTURING A COMPOSITE TEXTILE SUPPORT FOR THE REINFORCEMENT OF A BELT AND COMPOSITE TEXTILE SUPPORT THUS OBTAINED
DE19510316A1 (en) * 1995-03-22 1996-09-26 Huels Chemische Werke Ag Hotmelt adhesive composition for coating of deposit material
FR2745595B1 (en) * 1996-02-29 1998-05-22 Picardie Lainiere THERMAL ADHESIVE COVER AND MANUFACTURING METHOD THEREOF
DE10027957C1 (en) * 2000-06-08 2001-09-27 Freudenberg Carl Fa Fixing linings have one-layer textile breadth with adhesive dots based on epoxide resin and acid-terminated polyamide, polyester, polyurethane and/or vinyl copolymer covered by acid-terminated polyamide and/or copolyester
US20030203114A1 (en) * 2002-04-26 2003-10-30 Nash John L. Back-coated upholstery fabrics and methods of making same
EP1364996A1 (en) * 2002-05-25 2003-11-26 Martin Nielaba Laquer mixture and uses therof
DE10240926B4 (en) * 2002-09-02 2007-10-25 Carl Freudenberg Kg Fixing insert and method for its production
WO2004073436A1 (en) * 2003-02-19 2004-09-02 Hänsel Textil GmbH Fixable interlining material, method for the production thereof, and use thereof
WO2005035864A1 (en) * 2003-10-16 2005-04-21 Groep Masureel Veredeling Coating process and coated product
FR2870433B1 (en) * 2004-05-24 2007-08-24 Lainiere De Picardie Bc Soc Pa METHOD OF MANUFACTURING A THERMOCOLLATING WEAR AND THERMOCOLLANT WEARING OBTAINED
US8354144B2 (en) * 2007-11-09 2013-01-15 Carl Freudenberg Kg Thermofusible textile fabric
DE102007062865B4 (en) 2007-11-09 2009-10-15 Carl Freudenberg Kg Textile fixable fabric
US20100298097A1 (en) * 2007-11-13 2010-11-25 Universite Libre De Bruxelles Joint rehabilitation device and method
KR101025445B1 (en) * 2008-07-25 2011-03-30 한국바이린주식회사 Non-woven adhesive wick manufactured by pattern printing and its manufacturing method
CN101584507B (en) * 2009-06-15 2010-11-17 周德财 Production process of cold silicone liner
CN104738848B (en) * 2015-01-27 2016-08-24 江苏苏博印染有限公司 A kind of drying and shaping calendering coating two point all-in-one
DE102015005089A1 (en) * 2015-04-22 2016-10-27 Carl Freudenberg Kg Thermally fixable fabric
CN107470107A (en) * 2017-09-30 2017-12-15 浙江唐艺织物整理有限公司 A kind of coating cloth solidifies baking apparatus
DE102018214839B4 (en) * 2018-08-31 2021-05-12 Kufner Holding Gmbh Heat-sealable, textile fabric with a sustainable adhesive coating and its use
CN111254580B (en) * 2020-03-02 2021-05-07 桐乡佳车科技股份有限公司 Manufacturing method of split fiber non-woven fabric

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US4472463A (en) * 1982-12-06 1984-09-18 The B. F. Goodrich Company Two-step process for dipping textile cord or fabric and resorcinol/formaldehyde-free composition used therein

Also Published As

Publication number Publication date
DK0503204T3 (en) 1997-02-10
EP0503204A1 (en) 1992-09-16
ATE143068T1 (en) 1996-10-15
JPH04316682A (en) 1992-11-09
CA2058860C (en) 1999-07-13
US5290594A (en) 1994-03-01
CA2058860A1 (en) 1992-08-06
FR2672313B1 (en) 1993-04-30
AU1120492A (en) 1993-08-26
DE69213791D1 (en) 1996-10-24
ES2091312T3 (en) 1996-11-01
FR2672313A1 (en) 1992-08-07
JP3222521B2 (en) 2001-10-29
AU651532B2 (en) 1994-07-21
DE69213791T2 (en) 1997-02-06
TR25557A (en) 1993-05-01
GR3021402T3 (en) 1997-01-31

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