EP1152078A1 - Thermal insulating material - Google Patents
Thermal insulating material Download PDFInfo
- Publication number
- EP1152078A1 EP1152078A1 EP01401105A EP01401105A EP1152078A1 EP 1152078 A1 EP1152078 A1 EP 1152078A1 EP 01401105 A EP01401105 A EP 01401105A EP 01401105 A EP01401105 A EP 01401105A EP 1152078 A1 EP1152078 A1 EP 1152078A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- wick
- knitted
- threads
- insulation material
- synthetic
- 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.)
- Withdrawn
Links
Classifications
-
- D—TEXTILES; PAPER
- D04—BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
- D04B—KNITTING
- D04B1/00—Weft knitting processes for the production of fabrics or articles not dependent on the use of particular machines; Fabrics or articles defined by such processes
- D04B1/14—Other fabrics or articles characterised primarily by the use of particular thread materials
Definitions
- the present invention relates to an insulation material thermal.
- a material constituting a firebreak which is in the form of a sheet made from a wire made of two synthetic materials, aramid and pre-oxidized, the wires being cracked, mixed, spun and knitted.
- the sheet thus obtained has holes relatively large formed by meshes and which, thanks to the down formed by the cracking operation, traps a certain amount of air which constitutes insulation natural thermal slowing the conduction of heat.
- This down also forms an optical filter whose lengths cut-off waves correspond to those of radiation thermal emission spectrum of the flame of a fire.
- This fabric is light, easy to use and constitutes a fire barrier reducing radiation of a flame front.
- One of the aims of the present invention is, starting from a thread used for fabric making flame arrester, to make a fabric capable of constituting a coating for the thermal protection of organs or of devices.
- the invention relates to a manufacturing process a thermal insulation material in which we use stubborn yarn from a synthetic aramid yarn and a preoxidized synthetic yarn, these yarns being cracked to get fibers that are mixed and spun, said process being characterized in that, from several of these threads, a wick, said wick being knitted to obtain said material.
- the invention also relates to the material obtained according to the above method and which is of the type produced from a synthetic aramid yarn and a synthetic yarn preoxidized, these threads being cracked and the fibers thus obtained mixed and spun, said material being characterized in that it consists of a wick made from several of these threads, the wick being knitted.
- the wick is formed of at least four threads knitted on a lace-making machine.
- the wick has a size included between N.M. 2.8 and N.M. 6.
- the wick is knitted on a loom garnished with large needles.
- Insulation material is made of fibers made from a known synthetic aramid yarn commercially under the name of "KEVLAR” and a thread pre-oxidized synthetic known commercially as of "SIGRAFIL 0". PANOX-PREOX.
- These threads are made in a continuous form, the synthetic aramid yarn being light and having qualities of mechanical resistance, while the wire synthetic pre-oxidized is thermally stabilized, non-flammable and does not melt when heated.
- the wires are subjected to a cracking operation to stretch them until they break to get fibers having lengths between 60 mm and 200 mm.
- the fibers are mixed in the proportion 70% of fibers of the preoxidized synthetic yarn and 30% fibers of synthetic aramid yarn.
- This wire thus obtained has, on its surface, fibrils which constitute a down and form a network reflective elements.
- the wick thus obtained has a size of N.M. 2.8 (i.e. 2800 m for a kilo) to 6.
- This wick has curls that enclose air trapped between the fibrils.
- the lock obtained is knitted on a loom with large needles (gauge 2 to 6) and you get thus a knitted fabric which has a certain thickness and a certain volume of air which lends itself perfectly thermal protection of parts or devices for example liquefied gas tanks, electric batteries, batteries etc ...
Abstract
Description
La présente invention vise un matériau d'isolation thermique.The present invention relates to an insulation material thermal.
On connaít un matériau constituant un coupe-feu qui se présente sous la forme d'une nappe réalisée à partir d'un fil formé de deux matériaux synthétiques, de l'aramide et du préoxydé, les fils étant craqués, mélangés, filés et tricotés.We know a material constituting a firebreak which is in the form of a sheet made from a wire made of two synthetic materials, aramid and pre-oxidized, the wires being cracked, mixed, spun and knitted.
La nappe ainsi obtenue présente des trous relativement importants formés par des mailles et qui, grâce au duvet formé par l'opération de craquage, emprisonne une certaine quantité d'air qui constitue une isolation thermique naturelle freinant la conduction de la chaleur. Ce duvet forme également un filtre optique dont les longueurs d'ondes de coupure correspondent à celles du rayonnement thermique du spectre d'émission de la flamme d'un feu.The sheet thus obtained has holes relatively large formed by meshes and which, thanks to the down formed by the cracking operation, traps a certain amount of air which constitutes insulation natural thermal slowing the conduction of heat. This down also forms an optical filter whose lengths cut-off waves correspond to those of radiation thermal emission spectrum of the flame of a fire.
Ce tissu est léger, facile à mettre en oeuvre et constitue une barrière coupe-feu réduisant le rayonnement d'un front de flamme.This fabric is light, easy to use and constitutes a fire barrier reducing radiation of a flame front.
L'un des buts de la présente invention est, en partant d'un fil utilisé pour la fabrication du tissu pare-flamme, de réaliser un tissu susceptible de constituer un revêtement pour la protextion thermique d'organes ou de dispositifs.One of the aims of the present invention is, starting from a thread used for fabric making flame arrester, to make a fabric capable of constituting a coating for the thermal protection of organs or of devices.
L'invention vise un procédé de fabrication d'un matériau d'isolation thermique dans lequel on utilise des fils obstenus à partir d'un fil synthétique d'aramide et d'un fil synthétique préoxydé, ces fils étant craqués pour obtenir des fibres qui sont mélangées et filées, ledit procédé étant caractérisé en ce qu'on réalise, à partir de plusieurs de ces fils, une mèche, ladite mèche étant tricotée pour obtenir ledit matériau.The invention relates to a manufacturing process a thermal insulation material in which we use stubborn yarn from a synthetic aramid yarn and a preoxidized synthetic yarn, these yarns being cracked to get fibers that are mixed and spun, said process being characterized in that, from several of these threads, a wick, said wick being knitted to obtain said material.
L'invention vise également le matériau obtenu selon le procédé ci-dessus et qui est du type réalisé à partir d'un fil synthétique d'aramide et d'un fil synthétique préoxydé, ces fils étant craqués et les fibres ainsi obtenues mélangées et filées, ledit matériau étant caractérisé en ce qu'il est constitué d'une mèche réalisée à partir de plusieurs de ces fils, la mèche étant tricotée.The invention also relates to the material obtained according to the above method and which is of the type produced from a synthetic aramid yarn and a synthetic yarn preoxidized, these threads being cracked and the fibers thus obtained mixed and spun, said material being characterized in that it consists of a wick made from several of these threads, the wick being knitted.
On obtient ainsi un tissu tricoté, souple, léger,qui a un certain volume et qui trouve une application particulièrement intéressante pour recouvrir des matériels à protéger de la chaleur.We thus obtain a knitted, flexible fabric, light, has a certain volume and finds an application particularly interesting for covering materials protect from heat.
De préférence, la mèche est formée d'au moins quatre fils tricotés sur une machine à fabriquer les lacets.Preferably, the wick is formed of at least four threads knitted on a lace-making machine.
De préférence, la mèche a une grosseur comprise entre N.M. 2,8 et N.M. 6.Preferably, the wick has a size included between N.M. 2.8 and N.M. 6.
Enfin, la mèche est tricotée sur un métier garni de grosses aiguilles. Finally, the wick is knitted on a loom garnished with large needles.
L'invention va maintenant être décrite avec plus de détails en se référant à un mode de réalisation particulier donné à titre d'exemple seulement.The invention will now be described with more details with reference to an embodiment particular given by way of example only.
Le matériau d'isolation est formé de fibres réalisées à partir d'un fil synthétique d'aramide connu dans le commerce sous le nom de "KEVLAR" et d'un fil synthétique préoxydé connu dans le commerce sous le nom de "SIGRAFIL 0". PANOX-PREOX.Insulation material is made of fibers made from a known synthetic aramid yarn commercially under the name of "KEVLAR" and a thread pre-oxidized synthetic known commercially as of "SIGRAFIL 0". PANOX-PREOX.
Ces fils sont réalisés sous une forme continue, le fil synthétique d'aramide étant léger et présentant des qualités de résistance mécanique, tandis que le fil synthétique préoxydé est thermiquement stabilisé, ininflammable et ne fond pas à la chaleur.These threads are made in a continuous form, the synthetic aramid yarn being light and having qualities of mechanical resistance, while the wire synthetic pre-oxidized is thermally stabilized, non-flammable and does not melt when heated.
Les fils sont soumis à une opération de craquage afin de les étirer jusqu'à la rupture pour obtenir des fibres ayant des longueurs comprises entre 60 mm et 200 mm.The wires are subjected to a cracking operation to stretch them until they break to get fibers having lengths between 60 mm and 200 mm.
Les fibres sont mélangées dans la proportion de 70% de fibres du fil synthétique préoxydé et de 30% de fibres du fil synthétique d'aramide.The fibers are mixed in the proportion 70% of fibers of the preoxidized synthetic yarn and 30% fibers of synthetic aramid yarn.
On procède ensuite à un filage pour obtenir un fil qui, d'une part, résiste à la chaleur et, d'autre part, est résistant mécaniquement.We then proceed to a spinning to obtain a wire which, on the one hand, resists heat and, on the other hand, is mechanically resistant.
Ce fil ainsi obtenu présente, à sa surface, des fibrules qui constituent un duvet et forment un réseau d'éléments réfléchissants.This wire thus obtained has, on its surface, fibrils which constitute a down and form a network reflective elements.
A partir de ce fil, on forme une mèche en tricotant plusieurs de ces fils, par exemple, quatre sur une machine à fabriquer des lacets. La mèche ainsi obtenue a une grosseur de N.M. 2,8 (soit 2800 m pour un kilo) à 6. From this thread, we form a wick knitting several of these threads, for example, four on a machine to make laces. The wick thus obtained has a size of N.M. 2.8 (i.e. 2800 m for a kilo) to 6.
Cette mèche présente des boucles qui renferment de l'air emprisonné entre les fibrules.This wick has curls that enclose air trapped between the fibrils.
La mèche ainsi obtenue est tricotée sur un métier doté de grosses aiguilles (jauge 2 à 6) et on obtient ainsi un tissu tricoté qui présente une certaine épaisseur et un certain volume d'air et qui se prête parfaitement à la protection thermique de pièces ou de dispositifs par exemple de réservoirs de gaz liquéfiés, des piles électriques, des batteries etc...The lock obtained is knitted on a loom with large needles (gauge 2 to 6) and you get thus a knitted fabric which has a certain thickness and a certain volume of air which lends itself perfectly thermal protection of parts or devices for example liquefied gas tanks, electric batteries, batteries etc ...
Bien entendu, l'invention n'est pas limitée au mode de réalisation qui vient d'être décrit et représenté. On pourra y apporter de nombreuses modifications de détail sans sortir pour cela du cadre de l'invention.Of course, the invention is not limited to the embodiment which has just been described and shown. We can make many modifications detail without departing from the scope of the invention.
Claims (5)
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FR0005583A FR2808538B1 (en) | 2000-05-02 | 2000-05-02 | THERMAL INSULATION MATERIAL |
| FR0005583 | 2000-05-02 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| EP1152078A1 true EP1152078A1 (en) | 2001-11-07 |
Family
ID=8849797
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP01401105A Withdrawn EP1152078A1 (en) | 2000-05-02 | 2001-04-27 | Thermal insulating material |
Country Status (2)
| Country | Link |
|---|---|
| EP (1) | EP1152078A1 (en) |
| FR (1) | FR2808538B1 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103334213A (en) * | 2013-05-16 | 2013-10-02 | 江南大学 | Quasi-all-carbon fiber biaxial weft-knitted fabric bound by pre-oxidized fibers |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2179067A (en) * | 1985-08-12 | 1987-02-25 | Firth Furnishings Ltd | Fire resistant fabric |
| US4865906A (en) * | 1988-01-22 | 1989-09-12 | Smith Novis W Jr | Flame retardant yard blend |
| EP0432003A1 (en) * | 1989-11-22 | 1991-06-12 | Didier Royaerts | New material specially intended for use as a fire-break |
| US5393595A (en) * | 1989-11-22 | 1995-02-28 | Didier Royaerts | Firebreak fabric |
| US5651847A (en) * | 1993-02-12 | 1997-07-29 | Hoechst Ag | Double-face circular knit |
-
2000
- 2000-05-02 FR FR0005583A patent/FR2808538B1/en not_active Expired - Fee Related
-
2001
- 2001-04-27 EP EP01401105A patent/EP1152078A1/en not_active Withdrawn
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2179067A (en) * | 1985-08-12 | 1987-02-25 | Firth Furnishings Ltd | Fire resistant fabric |
| US4865906A (en) * | 1988-01-22 | 1989-09-12 | Smith Novis W Jr | Flame retardant yard blend |
| EP0432003A1 (en) * | 1989-11-22 | 1991-06-12 | Didier Royaerts | New material specially intended for use as a fire-break |
| US5393595A (en) * | 1989-11-22 | 1995-02-28 | Didier Royaerts | Firebreak fabric |
| US5651847A (en) * | 1993-02-12 | 1997-07-29 | Hoechst Ag | Double-face circular knit |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103334213A (en) * | 2013-05-16 | 2013-10-02 | 江南大学 | Quasi-all-carbon fiber biaxial weft-knitted fabric bound by pre-oxidized fibers |
Also Published As
| Publication number | Publication date |
|---|---|
| FR2808538B1 (en) | 2002-07-19 |
| FR2808538A1 (en) | 2001-11-09 |
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| 17Q | First examination report despatched |
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| RAP1 | Party data changed (applicant data changed or rights of an application transferred) |
Owner name: ROYAERTS, NICOLAS DENIS THOMAS Owner name: ROYAERTS, ALEXANDRE NICOLAS MARC |
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| RIN1 | Information on inventor provided before grant (corrected) |
Inventor name: ROYAERTS, DIDIER MAURICE MARIUS |
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| RIN1 | Information on inventor provided before grant (corrected) |
Inventor name: ROYAERTS, DIDIER MAURICE MARIUS |
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