FR2520394A1 - FLEXIBLE WOVEN PIPE AND MANUFACTURING METHOD THEREOF - Google Patents
FLEXIBLE WOVEN PIPE AND MANUFACTURING METHOD THEREOF Download PDFInfo
- Publication number
- FR2520394A1 FR2520394A1 FR8201021A FR8201021A FR2520394A1 FR 2520394 A1 FR2520394 A1 FR 2520394A1 FR 8201021 A FR8201021 A FR 8201021A FR 8201021 A FR8201021 A FR 8201021A FR 2520394 A1 FR2520394 A1 FR 2520394A1
- Authority
- FR
- France
- Prior art keywords
- sheath
- coating
- silicone elastomer
- bath
- container
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Classifications
-
- D—TEXTILES; PAPER
- D03—WEAVING
- D03D—WOVEN FABRICS; METHODS OF WEAVING; LOOMS
- D03D3/00—Woven fabrics characterised by their shape
- D03D3/02—Tubular fabrics
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C70/00—Shaping composites, i.e. plastics material comprising reinforcements, fillers or preformed parts, e.g. inserts
- B29C70/04—Shaping composites, i.e. plastics material comprising reinforcements, fillers or preformed parts, e.g. inserts comprising reinforcements only, e.g. self-reinforcing plastics
- B29C70/28—Shaping operations therefor
- B29C70/40—Shaping or impregnating by compression not applied
- B29C70/50—Shaping or impregnating by compression not applied for producing articles of indefinite length, e.g. prepregs, sheet moulding compounds [SMC] or cross moulding compounds [XMC]
- B29C70/52—Pultrusion, i.e. forming and compressing by continuously pulling through a die
- B29C70/523—Pultrusion, i.e. forming and compressing by continuously pulling through a die and impregnating the reinforcement in the die
- B29C70/524—Pultrusion, i.e. forming and compressing by continuously pulling through a die and impregnating the reinforcement in the die the transport direction being vertical
-
- 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
- D06M15/00—Treating fibres, threads, yarns, fabrics, or fibrous goods made from such materials, with macromolecular compounds; Such treatment combined with mechanical treatment
- D06M15/19—Treating fibres, threads, yarns, fabrics, or fibrous goods made from such materials, with macromolecular compounds; Such treatment combined with mechanical treatment with synthetic macromolecular compounds
- D06M15/37—Macromolecular compounds obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds
- D06M15/643—Macromolecular compounds obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds containing silicon in the main chain
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
- F16L11/00—Hoses, i.e. flexible pipes
- F16L11/04—Hoses, i.e. flexible pipes made of rubber or flexible plastics
- F16L11/10—Hoses, i.e. flexible pipes made of rubber or flexible plastics with reinforcements not embedded in the wall
Abstract
Description
La présente invention a essentiellement pour objet un tuyau flexible et étanche permettant d'acheminer d'un point à un autre des gaz qui peuvent être de natures diverses. The main object of the present invention is a flexible and leaktight pipe making it possible to convey gases which may be of various natures from one point to another.
Elle vise également un procédé de fabrication d'un tel tuyau ou conduit. It also relates to a method of manufacturing such a pipe or conduit.
On connait déjà des tuyaux ou conduits souples comportant une armature tissée par tissage circulaire, éventuellement renforcée par un fil métallique en spirale, et enduite sur sa face externe d'un revêtement synthétique. Flexible pipes or conduits are already known comprising a reinforcement woven by circular weaving, possibly reinforced by a spiral metal wire, and coated on its external face with a synthetic coating.
Mais ces tuyaux présentaient un certain nombre d'inconvénients. C'est ainsi que l'on peut citer l'épaisseur relativement importante de la paroi composite constituant de tels tuyaux , ce qui, comme on le comprend, les rendaient coûteux. Par ailleurs, de tels tuyauxntétaimt pas toujours susceptible de résister à des températures élevées, et, à la longue, leur flexibilité s'altérait. Ceci était évidemment faucheux lorsque par exemple le tuyau était soumis à des pressions ou dépressions successives de gaz pouvant, à la longue, engendrer des ruptures de la paroi du tuyau, et donc des fuites de gaz. But these pipes had a number of drawbacks. Thus we can cite the relatively large thickness of the composite wall constituting such pipes, which, as we understand, made them expensive. Furthermore, such pipes are not always capable of withstanding high temperatures, and, in the long run, their flexibility will deteriorate. This was obviously disastrous when for example the pipe was subjected to successive pressures or depressions of gas which could, in the long run, cause ruptures of the wall of the pipe, and therefore gas leaks.
La présente invention a pour but de remédier notamment aux inconvénients ci-dessus en proposant un tuyau souple perfectionné, d'une fabrication particulibrement simple, et d'un coût très faible notamment par le fait que son revêtement extérieur est d'une épaisseur minimum, sans nuire pour cela à ses excellentes qualités de flexibilité, d'étanchéité, et de résistance aux températures élevées. The object of the present invention is to remedy the above drawbacks in particular by proposing an improved flexible hose, of a particularly simple manufacture, and of a very low cost, in particular by the fact that its external coating has a minimum thickness, without harming for that its excellent qualities of flexibility, sealing, and resistance to high temperatures.
A cet effet, l'invention a pour objet un tuyau souple tissé et du type comportant une armature tissée par tissage circulaire et enduite sur sa face externe d'un revêtement synthétique, caractérisé en ce que ladite armature est constituée de fibres de polyamide aromatique et ledit revêtement extérieur est constitué par un élastomère de silicone. To this end, the subject of the invention is a flexible woven hose and of the type comprising a frame woven by circular weaving and coated on its external face with a synthetic coating, characterized in that said frame consists of aromatic polyamide fibers and said outer coating consists of a silicone elastomer.
En d'autres termes, l'utilisation spécifique de polyamide aromatique ou aramide pour l'armature tissée, et d'élastomère de silicone pour le revêtement de cette armature constitue une combinaison idéale de matériaux pour réaliser un conduit pour fluide gazeux possédant tous les avantages mentionnés précédemment. In other words, the specific use of aromatic polyamide or aramid for the woven frame, and of silicone elastomer for the coating of this frame constitutes an ideal combination of materials for producing a conduit for gaseous fluid having all the advantages. previously mentioned.
Selon une autre caractéristique de l'invention, l'épaisseur du revêtement extérieur en élastomère de silicone est sensiblement égale à 2 mm ce qui, comme on le comprend,est estune épaisseur très faible et rend le tuyau en question peu coûteux. According to another characteristic of the invention, the thickness of the outer coating of silicone elastomer is substantially equal to 2 mm, which, as can be understood, is a very small thickness and makes the pipe in question inexpensive.
L'invention vise également un procédé de fabrication en continu du tuyau ci-dessus,et du type consistant à fabriquer une gaine en fibres tissées à faire passer cette gaine dans un bain de liquide visqueux destiné à former le revêtement extérieur de la gaine, et à chauffer par la suite la gaine avec son revêtement, caractérisé en ce--que le bain précité, étant constitué par un matériau élastomère de silicone contenu dans un récipient, on fait passer la gaine en fibres de polyamide aromatique au travers de ce récipient puis au travers d'un organe de calibrage à alésage conique disposé au-dessus de la surface du bain. The invention also relates to a process for the continuous manufacture of the above pipe, and of the type consisting in manufacturing a sheath made of woven fibers to pass this sheath through a bath of viscous liquid intended to form the external coating of the sheath, and to subsequently heat the sheath with its coating, characterized in that the above-mentioned bath, being constituted by an elastomeric silicone material contained in a container, the sheath made of aromatic polyamide fibers is passed through this container then through a calibrating member with a conical bore arranged above the surface of the bath.
On ajoutera ici que la bain de matériau élastomère de silicone demeure à la pression atmosphérique et à la température ambiante, ce qui n'était pas le cas des procédés antérieurement connus qui prévoyaient notamment un revêtement de la gaine tissée par injection d'un matériau synthétique sous pression. It will be added here that the bath of silicone elastomer material remains at atmospheric pressure and at ambient temperature, which was not the case with the previously known methods which provided in particular for coating the sheath woven by injection of a synthetic material under pressure.
Suivant un mode de réalisation préféré du procédé selon l'invention, on fait passer la gaine précitée au travers de la paroi de fond du récipient contenant l'élastomère de silicone et dont la partie supérieure est ouverte pour permettre tant la sortie de la gaine effectuant un mouvement ascendant que l'alimentation dudit récipient en matériau élastomère de silicone. According to a preferred embodiment of the method according to the invention, the above-mentioned sheath is passed through the bottom wall of the container containing the silicone elastomer and the upper part of which is open to allow both the outlet of the sheath effecting an upward movement as the supply of said container with silicone elastomer material.
D'autres caractéristiques et avantages de l'invention apparaitront mieux dans la description détaillée qui suit et se réfère aux dessins annexés, donnés uniquement à titre d'exemple, et dans lequel :
- la figure 1 illustre très schématiquement une installation permettant de réaliser un conduit conforme aux principes de l'invention, et
- la figure 2 est une vue en perspective avec coupes d'un conduit réalisé à l'aide de l'installation de la figure 1.Other characteristics and advantages of the invention will appear better in the detailed description which follows and which refers to the attached drawings, given solely by way of example, and in which:
FIG. 1 very schematically illustrates an installation making it possible to produce a conduit in accordance with the principles of the invention, and
- Figure 2 is a perspective view with sections of a conduit produced using the installation of Figure 1.
Selon un exemple de réalisation, et en reportant à la figure 2, -on voit qu'un tuyau ou conduit souple conforme à l'invention comprend essentiellement une gaine ou armature 1 tissée par tissage circulaire et enduite sur sa face externe d'un revêtement synthétique 2. According to an exemplary embodiment, and referring to FIG. 2, it can be seen that a flexible pipe or conduit according to the invention essentially comprises a sheath or reinforcement 1 woven by circular weaving and coated on its external face with a coating synthetic 2.
Comme cela est bien connu dans la technique, la gaine 1 est tissée à partir de fils de trame et de channe sur un métier circulaire montré schématiquement en M sur la figure 1, la trame étant réalisée à partir d'un fil d'acier 3 constituant un enroulement hélicoïdal noyé dans la gaine. On pourrait très bien, sans sortir du cadre de l'invention, omettre le fil d'acier de sorte que la gaine ne comprendrait que des fils ou fibres synthétiques de chaine et de trame. As is well known in the art, the sheath 1 is woven from weft and warp threads on a circular loom shown diagrammatically at M in FIG. 1, the weft being produced from a steel wire 3 constituting a helical winding embedded in the sheath. We could very well, without departing from the scope of the invention, omit the steel wire so that the sheath would only comprise synthetic son or fibers of warp and weft.
Suivant une caractéristique essentielle du conduit selon l'invention, les fibres synthétiques de la gaine 1 sont des fibres de polyamide aromatique ou aramide. Ainsi, la gaine ou âme 1 du tuyau comprendra, en chaine, des fibres-aramides de haute résistance, et, en trame, également des fibres aramides, ou bien un fil d'acier ou des fibres d'une autre matière selon les caractéristiques recherchées. According to an essential characteristic of the conduit according to the invention, the synthetic fibers of the sheath 1 are fibers of aromatic polyamide or aramid. Thus, the sheath or core 1 of the pipe will comprise, in chain, high-resistance aramid fibers, and, in the weft, also aramid fibers, or else a steel wire or fibers of another material according to the characteristics wanted.
Suivant encore une caractéristique essentielle du tuyau de l'invention, le revêtement externe 2 de la gaine 1 est constitué par un élastomère de silicone dont l'épaisseur est relativement faible et par exemple voisine de 2 mm. Ce revêtement externe, combiné avec les fibres aramides de la gaine 1 confère au tuyau de l'invention de nombreuses qualités que l'on donnera en détail plus loin. According to yet another essential characteristic of the pipe of the invention, the external coating 2 of the sheath 1 is constituted by a silicone elastomer whose thickness is relatively small and for example close to 2 mm. This external coating, combined with the aramid fibers of the sheath 1 gives the pipe of the invention many qualities which will be given in detail below.
On se reportera maintenant à la figure 1 pour décrire en détail le procédé de fabrication du tuyau de l'invention. Reference will now be made to FIG. 1 to describe in detail the method of manufacturing the pipe of the invention.
On tisse tout d'abord la gaine 1 à l'aide d'un métier circulaire M d'un type connu en soi, ladite gaine étant acheminée par l'intermédiaire de galets ou analogues 4 vers un récipient 5 contenant un matériau élastomère de silicone 6. The sheath 1 is first woven using a circular loom M of a type known per se, said sheath being conveyed by means of rollers or the like 4 to a container 5 containing a silicone elastomer material 6.
La gaine 1 passe au travers de la paroi de fond 7 du récipient 5, puis au travers d'un organe de calibrage 8 à alésage conique 9 disposé au-dessus de la surface du bain 6. Ensuite, la gaine 1 pourvue de son revêtement 2 passe au travers d'un moyen de chauffage 10, constitué par exemple par un four à infrarouge, pour sortir finalement en 11, où le tuyau fini peut être enroulé et/ou découpé à la longueur voulue. The sheath 1 passes through the bottom wall 7 of the container 5, then through a sizing member 8 with a conical bore 9 disposed above the surface of the bath 6. Next, the sheath 1 provided with its coating 2 passes through a heating means 10, constituted for example by an infrared oven, to finally exit at 11, where the finished pipe can be wound and / or cut to the desired length.
Il est à noter ici que le bain de matériau élastomère de silicone demeure toujours à la pression atmosphérique et à la température ambiante lors de la fabrication du tuyau, et que la viscosité du bain 6 est suffisante pour permettre une adhérence du revêtement 2 sur la gaine 1 pendant le trajet de la gaine compris entre la surface du bain 6 et l'entrée dans le four 10 permettant la vulcanisation à chaud du revêtement 2. It should be noted here that the bath of silicone elastomer material always remains at atmospheric pressure and at ambient temperature during the manufacture of the pipe, and that the viscosity of the bath 6 is sufficient to allow adhesion of the coating 2 on the sheath 1 during the path of the sheath between the surface of the bath 6 and the entry into the furnace 10 allowing the hot vulcanization of the coating 2.
On ajoutera encore ici que l'appoint en élastomère de silicone 6 s'effectue tout simplement par versementdans le récipient 5, comme montré par la flèche 6a
L'invention permet donc de réaliser un tuyau qui, grâce à l'utilisation conjointe de fibres aramides et d'un élastomère de silicone pour réaliser respectivement l'âme et le revêtement externe du tuyau, possède d'excellentes propriétés de flexibilité, d'étanchéité, de résistance aux températures élevées supérieures à 200 C, et de résistance à la rupture et au déchirement.It will also be added here that the addition of silicone elastomer 6 is carried out quite simply by pouring into the container 5, as shown by the arrow 6a
The invention therefore makes it possible to produce a pipe which, thanks to the joint use of aramid fibers and a silicone elastomer for respectively producing the core and the external coating of the pipe, has excellent flexibility properties, waterproofness, resistance to high temperatures above 200 C, and resistance to breakage and tearing.
Enfin, un tel tuyau trouve de nombreuses applications, et peut être utilisé par exemple pour le transport d'air sous faible pression ou dépression à des températures comprises entre environ-3O##et 25O0C, pour l'isolation de gaine et pour la protection de fileries électriques. Finally, such a hose finds many applications, and can be used for example for the transport of air under low pressure or vacuum at temperatures between approximately -3O ## and 25O0C, for sheath insulation and for protection electrical wiring.
Claims (5)
Priority Applications (4)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FR8201021A FR2520394A1 (en) | 1982-01-22 | 1982-01-22 | FLEXIBLE WOVEN PIPE AND MANUFACTURING METHOD THEREOF |
| DE19838301483U DE8301483U1 (en) | 1982-01-22 | 1983-01-20 | FLEXIBLE WEAVING HOSE |
| DE19833301850 DE3301850A1 (en) | 1982-01-22 | 1983-01-20 | Flexible woven tube and method for its production |
| IT8319209A IT1212691B (en) | 1982-01-22 | 1983-01-21 | FLEXIBLE TUBE FABRIC AND MANUFACTURING PROCEDURE OF THE SAME. |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FR8201021A FR2520394A1 (en) | 1982-01-22 | 1982-01-22 | FLEXIBLE WOVEN PIPE AND MANUFACTURING METHOD THEREOF |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| FR2520394A1 true FR2520394A1 (en) | 1983-07-29 |
| FR2520394B1 FR2520394B1 (en) | 1984-05-04 |
Family
ID=9270253
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| FR8201021A Granted FR2520394A1 (en) | 1982-01-22 | 1982-01-22 | FLEXIBLE WOVEN PIPE AND MANUFACTURING METHOD THEREOF |
Country Status (3)
| Country | Link |
|---|---|
| DE (2) | DE8301483U1 (en) |
| FR (1) | FR2520394A1 (en) |
| IT (1) | IT1212691B (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2785358A1 (en) * | 1998-11-04 | 2000-05-05 | Normande De Tuyaux Flexibles S | FLEXIBLE PIPE OBTAINED FROM A HOLLOW WIRE BODY |
| WO2013057734A1 (en) * | 2011-10-20 | 2013-04-25 | Gupta Vikesh | Laminated polyethylene woven fabric pipes |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2647488A (en) * | 1950-05-31 | 1953-08-04 | Bentley Harris Mfg Company | Apparatus for coating tubular fabric and like narrow materials |
| FR1400790A (en) * | 1964-06-24 | 1965-05-28 | Parsch Fa Franz A | Method and device for applying an exterior coating to textile pipes, in particular fire pipes |
| FR2134853A5 (en) * | 1971-04-22 | 1972-12-08 | Guille Olivier Fils Ets | Pipes formed from plastic impregnated tubular fabric - - by inflating fabric and hardening fabric |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4025684A (en) * | 1971-09-02 | 1977-05-24 | Helmut Neidhardt | Tubular fabric coated with plastics or synthetic rubbers |
| CA1029262A (en) * | 1972-03-02 | 1978-04-11 | Johns-Manville Corporation | Elastomer coated fabric and method of making the same |
| DE2751323A1 (en) * | 1977-11-17 | 1979-05-23 | Jun Max Bindl | Fluid conveying or air conditioning hose - has seamless tubular member made of textile warp yarn and metallic weft yarn to impart dimensional stability to hose |
| ZA803980B (en) * | 1979-07-17 | 1981-08-26 | Dunlop Ltd | Reinforced tubular articles |
-
1982
- 1982-01-22 FR FR8201021A patent/FR2520394A1/en active Granted
-
1983
- 1983-01-20 DE DE19838301483U patent/DE8301483U1/en not_active Expired
- 1983-01-20 DE DE19833301850 patent/DE3301850A1/en not_active Withdrawn
- 1983-01-21 IT IT8319209A patent/IT1212691B/en active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2647488A (en) * | 1950-05-31 | 1953-08-04 | Bentley Harris Mfg Company | Apparatus for coating tubular fabric and like narrow materials |
| FR1400790A (en) * | 1964-06-24 | 1965-05-28 | Parsch Fa Franz A | Method and device for applying an exterior coating to textile pipes, in particular fire pipes |
| FR2134853A5 (en) * | 1971-04-22 | 1972-12-08 | Guille Olivier Fils Ets | Pipes formed from plastic impregnated tubular fabric - - by inflating fabric and hardening fabric |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2785358A1 (en) * | 1998-11-04 | 2000-05-05 | Normande De Tuyaux Flexibles S | FLEXIBLE PIPE OBTAINED FROM A HOLLOW WIRE BODY |
| EP0999393A1 (en) * | 1998-11-04 | 2000-05-10 | Societe Normande de Tuyaux Flexibles | Flexible tube made from a hollow filament body |
| WO2013057734A1 (en) * | 2011-10-20 | 2013-04-25 | Gupta Vikesh | Laminated polyethylene woven fabric pipes |
| CN104010804A (en) * | 2011-10-20 | 2014-08-27 | 维科什·古普塔 | Laminated polyethylene woven fabric pipes |
Also Published As
| Publication number | Publication date |
|---|---|
| DE8301483U1 (en) | 1985-03-28 |
| IT8319209A0 (en) | 1983-01-21 |
| DE3301850A1 (en) | 1983-08-11 |
| FR2520394B1 (en) | 1984-05-04 |
| IT1212691B (en) | 1989-11-30 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| ST | Notification of lapse |