EP1386987B1 - Composite flame-retardant yarn comprising two types of fibres - Google Patents

Composite flame-retardant yarn comprising two types of fibres Download PDF

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Publication number
EP1386987B1
EP1386987B1 EP20030291896 EP03291896A EP1386987B1 EP 1386987 B1 EP1386987 B1 EP 1386987B1 EP 20030291896 EP20030291896 EP 20030291896 EP 03291896 A EP03291896 A EP 03291896A EP 1386987 B1 EP1386987 B1 EP 1386987B1
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EP
European Patent Office
Prior art keywords
fibres
fibers
thermostable
thread
flame
Prior art date
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Expired - Lifetime
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EP20030291896
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German (de)
French (fr)
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EP1386987A1 (en
Inventor
Christian Paire
Thierry Lanier
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Proline Textile
Sofileta
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Proline Textile
Sofileta
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Publication of EP1386987A1 publication Critical patent/EP1386987A1/en
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Classifications

    • D—TEXTILES; PAPER
    • D02—YARNS; MECHANICAL FINISHING OF YARNS OR ROPES; WARPING OR BEAMING
    • D02G—CRIMPING OR CURLING FIBRES, FILAMENTS, THREADS, OR YARNS; YARNS OR THREADS
    • D02G3/00—Yarns or threads, e.g. fancy yarns; Processes or apparatus for the production thereof, not otherwise provided for
    • D02G3/02—Yarns or threads characterised by the material or by the materials from which they are made
    • D02G3/04—Blended or other yarns or threads containing components made from different materials
    • D02G3/047—Blended or other yarns or threads containing components made from different materials including aramid fibres
    • D—TEXTILES; PAPER
    • D02—YARNS; MECHANICAL FINISHING OF YARNS OR ROPES; WARPING OR BEAMING
    • D02G—CRIMPING OR CURLING FIBRES, FILAMENTS, THREADS, OR YARNS; YARNS OR THREADS
    • D02G3/00—Yarns or threads, e.g. fancy yarns; Processes or apparatus for the production thereof, not otherwise provided for
    • D02G3/44—Yarns or threads characterised by the purpose for which they are designed
    • D02G3/443—Heat-resistant, fireproof or flame-retardant yarns or threads
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T442/00—Fabric [woven, knitted, or nonwoven textile or cloth, etc.]
    • Y10T442/20—Coated or impregnated woven, knit, or nonwoven fabric which is not [a] associated with another preformed layer or fiber layer or, [b] with respect to woven and knit, characterized, respectively, by a particular or differential weave or knit, wherein the coating or impregnation is neither a foamed material nor a free metal or alloy layer
    • Y10T442/2631—Coating or impregnation provides heat or fire protection

Definitions

  • the invention relates to an anti-fire composite yarn and a textile comprising at least one woven or knitted textile layer formed with such a yarn.
  • the textile is typically intended for the production of protective clothing, including clothing for military, for fireman or used in industry.
  • the use of the textile is suitable when the garment must provide the user with some thermal protection.
  • yarns comprising heat-stable fibers which give the garment good fire-resistance performance and mechanical strength - in particular in terms of abrasion resistance, toughness and stability during wear. the use or different washes that the garment will have to undergo-.
  • the yarns of the prior art are colored by a pigment-type technique in which the dyes are coated on the yarns.
  • EP-A-0 237 451 proposes to use wires comprising a mixture of thermostable fibers of low modulus and high modulus, but in addition, another problem that arises is that of the high cost of thermostable fibers.
  • son comprising a mixture of thermostable fibers and fireproof fibers of lower cost.
  • thermostable fibers a specific dye which is arranged to melt into the subsequently applied colors on the fabric.
  • the invention therefore aims to remedy this drawback by proposing in particular a composite yarn comprising a lower percentage of thermostable fibers, without affecting either the mechanical properties or the fireproof properties of said yarn.
  • the fabric when the fabric is printed or dyed in a single phase, that is to say by using a single dyeing process and thus using, for example, dyed thermostable fibers in the mass, the fabric has a dichroism reduced in proportion the decrease in the amount of thermostable fibers.
  • thermostable fibers In addition, still due to the reduction of the percentage of thermostable fibers, the proposed wire has a lower production cost compared with those of the prior art.
  • the invention proposes a textile intended for producing protective clothing, said textile comprising at least one woven or knitted textile layer formed with such yarns.
  • the invention relates to a fire-resistant composite yarn composed of the combination of specific fibers, said yarn being in particular usable for the production of a textile for protective clothing, for example for military, fireman or used in the industry. Indeed, in such applications, the constraints, particularly in terms of fire resistance and mechanical strength, are becoming more severe so that there is a significant demand to improve the known son, and this in a cost control.
  • the yarn comprises fibers which comprise polymeric material based on polyvinyl alcohol.
  • the flame retarded fibers may comprise a flame retardant polymeric material.
  • the flame-retardant material may be a polyvinyl halide, in particular a polyvinyl chloride which, during its combustion, gives off a quantity of chlorine sufficient to render the fiber non-flammable.
  • the flame-retarded fibers thus obtained thus have, when they are subjected to a flame or an important source of heat, the dual property of not propagating the flame and of delaying the increase in temperature of the wire by the partial melting of the fibers. .
  • thermostable fibers which are formed of a non-flammable material.
  • thermostable is meant fibers that retain their physical properties in temperatures where other fibers have lost them.
  • thermostable fibers have the particular function of reinforcing, in addition to the thermal properties, the mechanical performance of the wire.
  • the use of these fibers makes it possible to obtain an abrasion resistance, a tenacity and a stability, in particular during the use or the various washes, which is compatible with the production of protective clothing.
  • heat-stable fibers make it possible to limit the formation of holes in the fabric when it is subjected to a flame, and thus to improve the fire protection provided by the garment.
  • thermostable fibers also have an advantageous effect on limiting the thermal shrinkage of the wire.
  • thermostable fibers were interesting as soon as they were present in an amount equal to 10% relative to the total weight of the yarn.
  • This low percentage is particularly interesting because of the large cost of these thermostable fibers and also the impossibility of printing them or dyeing them with simple techniques, in particular with the techniques conventionally used for fireproof fibers. .
  • This constraint is particularly important in the military field because the quality of the colors printed or hues directly affects the quality of camouflage conferred by the garment.
  • the low minimum percentage of heat-stable fibers required in the yarn according to the invention also makes it possible to use heat-stable fibers in which a specific color is incorporated which is designed to melt into the colors subsequently applied to the fabric, and this without significantly altering the quality of the camouflage obtained.
  • thermostable fibers In the case where a composite wire with higher mechanical strength is desired, it is also possible to integrate up to 30% of thermostable fibers with respect to the total weight of the wire.
  • thermostable fibers may be made based on a polymeric material chosen from the group comprising para-aramids, meta-aramids, polybenzimidazole-imides, polybenzooxazoles, polyacrylates, polyphenols, polyamide-imides, poly-p-amines and phenylenediamine terephthalamides (PPTA or M5).
  • a polymeric material chosen from the group comprising para-aramids, meta-aramids, polybenzimidazole-imides, polybenzooxazoles, polyacrylates, polyphenols, polyamide-imides, poly-p-amines and phenylenediamine terephthalamides (PPTA or M5).
  • the fibers forming the yarn are intimately mixed by a conventional spinning technique.
  • the yarn may comprise between 10% and 20% of thermostable fibers to optimize the ratio between the technical advantages conferred by these fibers with respect to their cost and their coloring stress.
  • yarn formed of 85% by weight of commercial PVA FR fibers (ie fibers formed from polyvinyl alcohol and polyvinyl alcohol). an inclusion of polyvinyl chloride) and 15% by weight of meta-aramid fibers, which exhibits fire-fighting characteristics (in terms of LOI (Limit Oxygen Index), that is to say the minimum concentration of oxygen required to cause inflammation of the wire in contact with a flame), mechanical strength and colorability that are particularly interesting in the context of the applications considered.
  • LOI Limit Oxygen Index
  • the wire has an LOI defined according to ISO 4589-2 which is greater than 25%.
  • the composite yarn comprises two types of thermostable fibers, one with standard tenacity - for example meta aramid - and the other with high tenacity - for example para-aramid.
  • high tenacity is typically meant a tenacity greater than 10cN / dtex, especially greater than 15cN / dtex.
  • the yarn can be formed by intimately mixing the fibers as described above.
  • the wire can be made by a core-spun technique.
  • the yarn then comprises a core yarn formed with the high-tenacity thermostable fibers and, associated around said core yarn, a coating formed of the other fibers.
  • the amount of thermostable fibers can then typically be set between 20% and 30% by weight of the yarn.
  • thermostable fibers do not arise because they are arranged in the core wire.
  • the invention therefore proposes a particular combination of fibers which makes it possible to optimally fill in particular the above-mentioned coloration constraints, without affecting the fire resistance and mechanical performance of the yarn.
  • the yarn according to the invention makes it possible to obtain a textile of sufficient flexibility to obtain an advantageous touch, and this in a cost compatible with an industrial production.
  • the yarns according to the invention are especially intended for the production of a woven or knitted textile layer which is used in a textile for protective clothing.
  • the textile layer may be advantageously dyed or printed with a minimum of dichroism, especially in a single phase, that is to say using a single dyeing process, for example of fixed type washed.
  • the textile may comprise, associated on the textile layer, a breathable layer-that is to say, impermeable to liquid water and wind but permeable to water vapor-non-flammable so as to confer this property to protective clothing made.
  • the breathable layer may be in the form of a membrane or a microporous and / or hydrophilic coating, for example polyurethane or polytetrafluoroethylene (PTFE), and be associated with the textile layer by screen printing coating. a network of adhesive dots.
  • PTFE polytetrafluoroethylene

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Textile Engineering (AREA)
  • Woven Fabrics (AREA)
  • Yarns And Mechanical Finishing Of Yarns Or Ropes (AREA)
  • Multicomponent Fibers (AREA)
  • Professional, Industrial, Or Sporting Protective Garments (AREA)

Abstract

Fire-resistant yarn comprises 70-90 wt.% flame-retarded polyvinyl alcohol fibers and 10-30 wt.% thermostable fibers made from a nonflammable material. An independent claim is also included for textiles for making protective clothing, comprising at least one textile layer woven or knitted from the fire-resistant yarn.

Description

L'invention concerne un fil composite anti-feu et un textile comprenant au moins une couche textile tissée ou tricotée formée avec un tel fil.The invention relates to an anti-fire composite yarn and a textile comprising at least one woven or knitted textile layer formed with such a yarn.

Le textile est typiquement destiné à la réalisation de vêtements de protection, notamment de vêtements pour militaire, pour pompier ou utilisés dans l'industrie. De façon particulière, l'utilisation du textile est adaptée lorsque le vêtement doit conférer à l'utilisateur une certaine protection thermique.The textile is typically intended for the production of protective clothing, including clothing for military, for fireman or used in industry. In particular, the use of the textile is suitable when the garment must provide the user with some thermal protection.

Pour de telles applications, il est connu d'utiliser des fils comprenant des fibres thermostables qui confèrent au vêtement de bonnes performances anti-feu et de résistance mécanique -en particulier en terme de résistance à l'abrasion, de ténacité et de stabilité lors de l'utilisation ou des différents lavages que le vêtement aura à subir-.For such applications, it is known to use yarns comprising heat-stable fibers which give the garment good fire-resistance performance and mechanical strength - in particular in terms of abrasion resistance, toughness and stability during wear. the use or different washes that the garment will have to undergo-.

Toutefois, un problème qui se pose avec les fibres thermostables est leur impossibilité à être teintes ou imprimées de façon simple, notamment avec une technique standard de type fixé lavé.However, a problem that arises with heat-stable fibers is their inability to be dyed or printed in a simple manner, especially with a standard technique of fixed type washed.

C'est pourquoi, dans les applications considérées, les fils de l'art antérieur sont colorés par une technique de type pigmentaire dans laquelle les colorants sont enduits sur les fils.This is why, in the applications under consideration, the yarns of the prior art are colored by a pigment-type technique in which the dyes are coated on the yarns.

Toutefois, cette technique ne permet pas d'obtenir une coloration suffisamment résistante, notamment vis-à-vis de l'abrasion, puisque l'enduction n'est que faiblement liée aux fils.However, this technique does not make it possible to obtain a sufficiently resistant coloration, in particular with respect to abrasion, since the coating is only weakly bonded to the wires.

EP-A-0 237 451 propose d'utiliser des fils comprenant un mélange de fibres thermostables de bas module et de haut module, mais en outre, un autre problème qui se pose est celui du coût important des fibres thermostables.EP-A-0 237 451 proposes to use wires comprising a mixture of thermostable fibers of low modulus and high modulus, but in addition, another problem that arises is that of the high cost of thermostable fibers.

C'est pourquoi, on a proposé d'utiliser des fils comprenant un mélange de fibres thermostables et de fibres ignifugées de coût moindre.Therefore, it has been proposed to use son comprising a mixture of thermostable fibers and fireproof fibers of lower cost.

Toutefois, pour obtenir un fil composite qui satisfait les contraintes spécifiques des utilisations considérées, notamment en terme de résistance mécanique et de propriétés anti-feu, l'art antérieur propose d'utiliser des fibres ignifugées qui doivent être combinées à plus de 50% en poids de fibres thermostables.However, in order to obtain a composite yarn which satisfies the specific constraints of the uses in question, in particular in terms of mechanical strength and fire-resistance properties, the prior art proposes to use fire-resistant fibers which must be combined to more than 50% by weight. thermostable fiber weight.

Mais, dans un tel pourcentage, les contraintes de coloration mentionnées ci-dessus demeurent, de sorte qu'on a proposé d'intégrer dans les fibres thermostables un colorant spécifique qui est agencé pour se fondre dans les couleurs appliquées ultérieurement sur le tissu.But in such a percentage, the above-mentioned staining constraints remain, so it has been proposed to incorporate into the thermostable fibers a specific dye which is arranged to melt into the subsequently applied colors on the fabric.

Cette solution ne donne que partiellement satisfaction, notamment du fait du pourcentage important de fibres thermostables, et est particulièrement limitante pour une application militaire dans laquelle la qualité initiale ou après entretien des couleurs imprimées ou teintes influe directement sur la qualité du camouflage conféré par le vêtement.This solution is only partially satisfactory, in particular because of the high percentage of heat-stable fibers, and is particularly limiting for a military application in which the initial quality or after maintenance of the colors printed or dyed directly affects the quality of the camouflage conferred by the garment. .

L'invention vise donc à remédier à cet inconvénient en proposant notamment un fil composite comprenant un pourcentage moindre de fibres thermostables, et ce sans affecter ni les propriétés mécaniques ni les propriétés anti-feu dudit fil.The invention therefore aims to remedy this drawback by proposing in particular a composite yarn comprising a lower percentage of thermostable fibers, without affecting either the mechanical properties or the fireproof properties of said yarn.

Ainsi, lorsque le tissu est imprimé ou teint en une seule phase, c'est-à-dire en utilisant un seul procédé de coloration et donc en utilisant par exemple des fibres thermostables teintes dans la masse, le tissu présente un dichroïsme réduit en proportion de la diminution de la quantité de fibres thermostables.Thus, when the fabric is printed or dyed in a single phase, that is to say by using a single dyeing process and thus using, for example, dyed thermostable fibers in the mass, the fabric has a dichroism reduced in proportion the decrease in the amount of thermostable fibers.

En outre, toujours du fait de la réduction du pourcentage des fibres thermostables, le fil proposé présente un coût de production moindre par rapport à ceux de l'art antérieur.In addition, still due to the reduction of the percentage of thermostable fibers, the proposed wire has a lower production cost compared with those of the prior art.

A cet effet, et selon un premier aspect, l'invention propose un fil composite anti-feu comprenant :

  • entre 70% et 90 % en poids de fibres ignifugées, lesdites fibres comprenant un matériau polymérique à base d'alcool polyvinylique ;
  • entre 10% et 30% en poids d'au moins un type de fibres thermostables qui sont formées d'un matériau ininflammable.
For this purpose, and according to a first aspect, the invention proposes an anti-fire composite wire comprising:
  • between 70% and 90% by weight of flame retarded fibers, said fibers comprising a polymeric material based on polyvinyl alcohol;
  • between 10% and 30% by weight of at least one type of thermostable fibers which are formed of a non-flammable material.

Selon un deuxième aspect, l'invention propose un textile destiné à la réalisation de vêtements de protection, ledit textile comprenant au moins une couche textile tissée ou tricotée formée avec de tels fils.According to a second aspect, the invention proposes a textile intended for producing protective clothing, said textile comprising at least one woven or knitted textile layer formed with such yarns.

D'autres objets et avantages de l'invention apparaîtront au cours de la description qui suit.Other objects and advantages of the invention will become apparent from the description which follows.

L'invention concerne un fil composite anti-feu composé de la combinaison de fibres spécifiques, ledit fil étant notamment utilisable pour la réalisation d'un textile pour vêtement de protection, par exemple pour militaire, pour pompier ou utilisé dans l'industrie. En effet, dans de telles applications, les contraintes, notamment en terme de propriétés anti-feu et de résistance mécanique, sont de plus en plus sévères de sorte qu'il existe une demande importante pour perfectionner les fils connus, et ce dans un coût maîtrisé.The invention relates to a fire-resistant composite yarn composed of the combination of specific fibers, said yarn being in particular usable for the production of a textile for protective clothing, for example for military, fireman or used in the industry. Indeed, in such applications, the constraints, particularly in terms of fire resistance and mechanical strength, are becoming more severe so that there is a significant demand to improve the known son, and this in a cost control.

Le fil comprend des fibres qui comprennent un matériau polymérique à base d'alcool polyvinylique.The yarn comprises fibers which comprise polymeric material based on polyvinyl alcohol.

Toutefois, ce type de matériau n'est pas ininflammable en tant que tel. C'est pourquoi, pour obtenir un fil anti-feu, les fibres utilisées doivent être ignifugées.However, this type of material is not non-flammable as such. Therefore, to obtain a fireproof wire, the fibers used must be fireproof.

A cet effet, les fibres ignifugées peuvent comprendre un matériau polymérique ignifugeant. Dans un exemple particulier, le matériau ignifugeant peut être un polyhalogénure de vinyle, notamment un polychlorure de vinyle qui, lors de sa combustion, dégage une quantité de chlore suffisante pour rendre la fibre ininflammable.For this purpose, the flame retarded fibers may comprise a flame retardant polymeric material. In a particular example, the flame-retardant material may be a polyvinyl halide, in particular a polyvinyl chloride which, during its combustion, gives off a quantity of chlorine sufficient to render the fiber non-flammable.

Les fibres ignifugées ainsi obtenues présentent donc, lorsqu'elles sont soumises à une flamme ou à une source importante de chaleur, la double propriété de ne pas propager la flamme et de retarder l'augmentation en température du fil grâce à la fusion partielle des fibres.The flame-retarded fibers thus obtained thus have, when they are subjected to a flame or an important source of heat, the dual property of not propagating the flame and of delaying the increase in temperature of the wire by the partial melting of the fibers. .

Le problème qui se pose avec de telles fibres ignifugées est celui de leur stabilité thermique. En effet, l'absorption d'énergie thermique est obtenue grâce à la fusion partielle des fibres, ce qui entraîne une déformation de celles-ci.The problem with such flame retarded fibers is that of their thermal stability. Indeed, the absorption of thermal energy is obtained through the partial melting of the fibers, resulting in a deformation thereof.

Pour pallier cet inconvénient, les fibres ignifugées sont associées à au moins un type de fibres thermostables qui sont formées d'un matériau ininflammable. Par thermostable, on entend des fibres qui conservent leurs propriétés physiques dans des températures où les autres fibres les ont perdues.To overcome this drawback, the flame-retarded fibers are associated with at least one type of thermostable fibers which are formed of a non-flammable material. By thermostable is meant fibers that retain their physical properties in temperatures where other fibers have lost them.

Les fibres thermostables ont notamment pour fonction de renforcer, outre les propriétés thermiques, les performances mécaniques du fil. En particulier, l'utilisation de ces fibres permet d'obtenir une résistance à l'abrasion, une ténacité et une stabilité, notamment lors de l'utilisation ou des différents lavages, qui est compatible avec la réalisation de vêtements de protection. En outre, les fibres thermostables permettent de limiter la formation de trous dans le tissu lorsque celui-ci est soumis à une flamme, et donc d'améliorer la protection anti-feu conférée par le vêtement. Enfin, les fibres thermostables ont également un effet avantageux sur la limitation du retrait thermique du fil.The thermostable fibers have the particular function of reinforcing, in addition to the thermal properties, the mechanical performance of the wire. In particular, the use of these fibers makes it possible to obtain an abrasion resistance, a tenacity and a stability, in particular during the use or the various washes, which is compatible with the production of protective clothing. In addition, heat-stable fibers make it possible to limit the formation of holes in the fabric when it is subjected to a flame, and thus to improve the fire protection provided by the garment. Finally, thermostable fibers also have an advantageous effect on limiting the thermal shrinkage of the wire.

La demanderesse a fait des essais et a constaté que, en combinaison avec les fibres ignifugées particulières utilisées, la contribution des fibres thermostables était intéressante dès qu'elles étaient présentes en une quantité égale à 10% par rapport au poids total du fil. Ce faible pourcentage est particulièrement intéressant du fait d'une part du coût important de ces fibres thermostables et d'autre part de l'impossibilité de les imprimer ou de les teindre avec des techniques simples, notamment avec les techniques classiquement utilisées pour les fibres ignifugées. Cette contrainte est particulièrement importante dans le domaine militaire du fait que la qualité des couleurs imprimées ou teintes influe directement sur la qualité du camouflage conféré par le vêtement. Et, le faible pourcentage minimum de fibres thermostables nécessaire dans le fil suivant l'invention permet en outre d'utiliser des fibres thermostables dans lesquelles est intégrée une couleur spécifique qui est agencée pour se fondre dans les couleurs appliquées ultérieurement sur le tissu, et ce sans altérer notablement la qualité du camouflage obtenu.The Applicant has tested and found that, in combination with the particular flame retarded fibers used, the contribution of thermostable fibers was interesting as soon as they were present in an amount equal to 10% relative to the total weight of the yarn. This low percentage is particularly interesting because of the large cost of these thermostable fibers and also the impossibility of printing them or dyeing them with simple techniques, in particular with the techniques conventionally used for fireproof fibers. . This constraint is particularly important in the military field because the quality of the colors printed or hues directly affects the quality of camouflage conferred by the garment. And, the low minimum percentage of heat-stable fibers required in the yarn according to the invention also makes it possible to use heat-stable fibers in which a specific color is incorporated which is designed to melt into the colors subsequently applied to the fabric, and this without significantly altering the quality of the camouflage obtained.

Dans le cas où l'on souhaite un fil composite à plus haute résistance mécanique, il est également possible d'intégrer jusqu'à 30% de fibres thermostables par rapport au poids total du fil.In the case where a composite wire with higher mechanical strength is desired, it is also possible to integrate up to 30% of thermostable fibers with respect to the total weight of the wire.

Les fibres thermostables peuvent être réalisées à base d'un matériau polymérique choisi dans le groupe comprenant les para aramides, les méta aramides, les polybenzimidazole-imides, les polybenzooxazoles, les polyacrylates, les polyphénols, les polyamide-imides, les poly-p-phenylènediamine-terephtalamides (PPTA ou M5).The thermostable fibers may be made based on a polymeric material chosen from the group comprising para-aramids, meta-aramids, polybenzimidazole-imides, polybenzooxazoles, polyacrylates, polyphenols, polyamide-imides, poly-p-amines and phenylenediamine terephthalamides (PPTA or M5).

Selon une réalisation, les fibres formant le fil sont mélangées de façon intime par une technique de filature classique. Dans cette réalisation, le fil peut comprendre entre 10% et 20% de fibres thermostables pour optimiser le rapport entre les avantages techniques conférés par ces fibres par rapport à leur coût et à leur contrainte de coloration.In one embodiment, the fibers forming the yarn are intimately mixed by a conventional spinning technique. In this embodiment, the yarn may comprise between 10% and 20% of thermostable fibers to optimize the ratio between the technical advantages conferred by these fibers with respect to their cost and their coloring stress.

Dans un exemple particulier de fil selon cette réalisation de l'invention, on peut citer un fil formé de 85% en poids de fibres PVA FR commercial (c'est-à-dire de fibres formées à base d'alcool polyvinylique et d'une inclusion de polychlorure de vinyle) et de 15% en poids de fibres en meta aramide, qui présente des caractéristiques anti-feu (en terme de LOI (Limit Oxygen Index) c'est-à-dire de concentration minimum d'oxygène nécessaire pour entraîner l'inflammation du fil au contact d'une flamme), de résistance mécanique et de capacité de coloration qui sont particulièrement intéressantes dans le cadre des applications considérées. En particulier, le fil présente une LOI définie selon la norme ISO 4589-2 qui est supérieure à 25%.In a particular example of yarn according to this embodiment of the invention, there may be mentioned a yarn formed of 85% by weight of commercial PVA FR fibers (ie fibers formed from polyvinyl alcohol and polyvinyl alcohol). an inclusion of polyvinyl chloride) and 15% by weight of meta-aramid fibers, which exhibits fire-fighting characteristics (in terms of LOI (Limit Oxygen Index), that is to say the minimum concentration of oxygen required to cause inflammation of the wire in contact with a flame), mechanical strength and colorability that are particularly interesting in the context of the applications considered. In particular, the wire has an LOI defined according to ISO 4589-2 which is greater than 25%.

Selon une réalisation, notamment dans le cas où l'on souhaite un fil à ténacité renforcée, le fil composite comprend deux types de fibres thermostables, l'un à ténacité standard -par exemple en meta aramide- et l'autre à haute ténacité - par exemple en para aramide-. Par le terme « haute ténacité » on entend typiquement une ténacité supérieure à 10cN/dtex, notamment supérieure à 15cN/dtex.According to one embodiment, especially in the case where it is desired to a reinforced tenacity yarn, the composite yarn comprises two types of thermostable fibers, one with standard tenacity - for example meta aramid - and the other with high tenacity - for example para-aramid. By the term "high tenacity" is typically meant a tenacity greater than 10cN / dtex, especially greater than 15cN / dtex.

Dans cette réalisation, le fil peut être formé par mélange intime des fibres tel qu'exposé précédemment. A titre d'exemple, on peut citer un fil formé de 85% en poids de fibres PVA FR commercial, de 10% en poids de fibres en meta aramide et de 5% en poids de fibres en para aramide.In this embodiment, the yarn can be formed by intimately mixing the fibers as described above. By way of example, mention may be made of a yarn formed of 85% by weight of commercial PVA FR fibers, 10% by weight of meta-aramid fibers and 5% by weight of para-aramid fibers.

En variante, le fil peut être réalisé par une technique de type core-spun. Le fil comprend alors un fil d'âme formé avec les fibres thermostables à haute ténacité et, associé autour dudit fil d'âme, un enrobage formé des autres fibres. La quantité de fibres thermostables peut alors être typiquement fixée entre 20% et 30% en poids du fil.Alternatively, the wire can be made by a core-spun technique. The yarn then comprises a core yarn formed with the high-tenacity thermostable fibers and, associated around said core yarn, a coating formed of the other fibers. The amount of thermostable fibers can then typically be set between 20% and 30% by weight of the yarn.

Notons que dans cette réalisation, les contraintes de coloration des fibres thermostables à haute ténacité ne se posent pas du fait qu'elles sont disposées dans le fil d'âme.Note that in this embodiment, the coloring stresses of high-tenacity thermostable fibers do not arise because they are arranged in the core wire.

L'invention propose donc une combinaison particulière de fibres qui permet de remplir de façon optimale notamment les contraintes de coloration mentionnées ci-dessus, et ce sans affecter les performances tant anti-feu que mécaniques du fil. En outre, le fil selon l'invention permet d'obtenir un textile de souplesse suffisante pour obtenir un toucher avantageux, et ce dans un coût compatible avec une production industrielle.The invention therefore proposes a particular combination of fibers which makes it possible to optimally fill in particular the above-mentioned coloration constraints, without affecting the fire resistance and mechanical performance of the yarn. In addition, the yarn according to the invention makes it possible to obtain a textile of sufficient flexibility to obtain an advantageous touch, and this in a cost compatible with an industrial production.

C'est pourquoi, les fils selon l'invention sont notamment destinés à la réalisation d'une couche textile tissée ou tricotée qui est utilisée dans un textile pour des vêtements de protection.This is why the yarns according to the invention are especially intended for the production of a woven or knitted textile layer which is used in a textile for protective clothing.

Comme expliqué précédemment, la couche textile peut être avantageusement teint ou imprimé avec un minimum de dichroïsme, notamment en une seule phase, c'est-à-dire en utilisant un seul procédé de coloration, par exemple de type fixé lavé.As explained above, the textile layer may be advantageously dyed or printed with a minimum of dichroism, especially in a single phase, that is to say using a single dyeing process, for example of fixed type washed.

En outre, le textile peut comprendre, associé sur la couche textile, une couche imper-respirante -c'est-à-dire imperméable à l'eau liquide et au vent mais perméable à la vapeur d'eau- ininflammable de sorte à conférer cette propriété au vêtement de protection confectionné.In addition, the textile may comprise, associated on the textile layer, a breathable layer-that is to say, impermeable to liquid water and wind but permeable to water vapor-non-flammable so as to confer this property to protective clothing made.

La couche imper-respirante peut être réalisée sous la forme d'une membrane ou d'une enduction micro poreuse et/ou hydrophilique, par exemple en polyuréthane ou en polytétrafluoroéthylène (PTFE), et être associée à la couche textile par enduction sérigraphie d'un réseau de points adhésifs.The breathable layer may be in the form of a membrane or a microporous and / or hydrophilic coating, for example polyurethane or polytetrafluoroethylene (PTFE), and be associated with the textile layer by screen printing coating. a network of adhesive dots.

Claims (12)

  1. A fire-retardant composite thread comprising:
    - between 70% and 90% by weight flame-retarded fibres, the said fibres comprising a polymeric material based on polyvinyl alcohol;
    - between 10% and 30% by weight of at least one type of thermostable fibre formed from a non-flammable material.
  2. A thread according to Claim 1, characterised in that the flame-retarded fibres also comprise a flame-retarding polymeric material.
  3. A thread according to Claim 2, characterised in that the flame-retarding polymeric material is formed from polyvinyl halide, in particular polyvinyl chloride.
  4. A thread according to any one of Claims 1 to 3, characterised in that the thermostable fibres are produced from a polymeric material chosen from the group comprising para-aramids, meta-aramids, polybenzimidazole-imides, polybenzooxazoles, polyacrylates, polyphenols, polyamide-imides and poly-p-phenylenediamine-terephthalamides.
  5. A thread according to any one of Claims 1 to 4, characterised in that it comprises a type of high-toughness thermostable fibre.
  6. A thread according to any one of Claims 1 to 5, characterised in that the fibres forming the thread are intimately mixed.
  7. A thread according to Claim 6, characterised in that it comprises between 10% and 20% by weight thermostable fibres.
  8. A thread according to Claim 5, characterised in that it comprises a core thread formed by high-toughness fibres and, associated around the said core thread, a covering formed by the other fibres.
  9. A thread according to Claim 8, characterised in that it comprises between 20% and 30% by weight thermostable fibres.
  10. A textile intended for producing protective clothing, characterised in that it comprises at least one woven or knitted textile layer formed with threads according to any one of Claims 1 to 9.
  11. A textile according to Claim 10, characterised in that the textile layer is dyed or printed.
  12. A textile according to Claim 10 or 11, characterised in that it comprises, associated with the textile layer, a non-flammable waterproof/breathable layer.
EP20030291896 2002-07-31 2003-07-30 Composite flame-retardant yarn comprising two types of fibres Expired - Lifetime EP1386987B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR0209769A FR2843132B1 (en) 2002-07-31 2002-07-31 TWO-TYPE FIBER FIRE-RESISTANT COMPOSITE YARN
FR0209769 2002-07-31

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EP1386987A1 EP1386987A1 (en) 2004-02-04
EP1386987B1 true EP1386987B1 (en) 2005-09-21

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US (1) US20060234578A1 (en)
EP (1) EP1386987B1 (en)
CN (1) CN1671899A (en)
AT (1) ATE305061T1 (en)
AU (1) AU2003281834A1 (en)
CA (1) CA2493943A1 (en)
DE (1) DE60301652T2 (en)
FR (1) FR2843132B1 (en)
WO (1) WO2004012540A2 (en)

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2843133B1 (en) * 2002-07-31 2005-01-14 Proline Textile FIRE-FIGURING WIRE WITH THREE TYPES OF FIBERS
DE602006010431D1 (en) * 2005-12-16 2009-12-24 Du Pont THERMAL PERFORMANCE CLOTHING ACCESSORIES WITH PIPE AND ARAMID FIBER OUTSIDE
WO2007073540A1 (en) * 2005-12-16 2007-06-28 E.I. Du Pont De Nemours And Company Thermal performance garments comprising an ultraviolet light tolerant outer shell fabric of polypyridobisimidazole and polybenzobisoxazole fibers
WO2007076258A2 (en) * 2005-12-16 2007-07-05 E. I. Du Pont De Nemours And Company Fabrics made from a blend of polypyridobisimidazole/flame-retardant treated cellulose fibers and articles made therefrom
CN107938089A (en) * 2017-12-04 2018-04-20 四川航天五源复合材料有限公司 A kind of yarn for protective garment

Family Cites Families (8)

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Publication number Priority date Publication date Assignee Title
JPS536617A (en) * 1976-07-07 1978-01-21 Kohjin Co Ltd Composite fibers
ATA103182A (en) * 1982-03-15 1987-05-15 Zimmer Kg Taunus Textildruck FLAME RETARDANT TEXTILE AREA
JPH01156537A (en) * 1987-10-02 1989-06-20 Stamicarbon Bv Combination of polymer filament or yarn having low friction coefficient and filament or yarn having high friction coefficient
JP2703390B2 (en) * 1990-06-11 1998-01-26 帝人株式会社 Aromatic polyamide fiber cloth
FR2673207B1 (en) * 1991-02-25 1994-07-22 Picardie Lainiere COMPOSITE FIRE PROTECTION LINING.
JP3477991B2 (en) * 1996-05-13 2003-12-10 鐘淵化学工業株式会社 Flame retardant fabric with improved heat resistance
WO1999018267A1 (en) * 1997-10-07 1999-04-15 Kuraray Co., Ltd. Flame-retardant polyvinyl alcohol base fiber
FR2843133B1 (en) * 2002-07-31 2005-01-14 Proline Textile FIRE-FIGURING WIRE WITH THREE TYPES OF FIBERS

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DE60301652D1 (en) 2005-10-27
EP1386987A1 (en) 2004-02-04
AU2003281834A1 (en) 2004-02-23
ATE305061T1 (en) 2005-10-15
CA2493943A1 (en) 2004-02-12
US20060234578A1 (en) 2006-10-19
CN1671899A (en) 2005-09-21
FR2843132B1 (en) 2004-10-29
AU2003281834A8 (en) 2004-02-23
DE60301652T2 (en) 2006-06-22
WO2004012540A3 (en) 2004-05-13
WO2004012540A2 (en) 2004-02-12
FR2843132A1 (en) 2004-02-06

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