EP0893803B1 - Fil électriquement conducteur - Google Patents
Fil électriquement conducteur Download PDFInfo
- Publication number
- EP0893803B1 EP0893803B1 EP98420103A EP98420103A EP0893803B1 EP 0893803 B1 EP0893803 B1 EP 0893803B1 EP 98420103 A EP98420103 A EP 98420103A EP 98420103 A EP98420103 A EP 98420103A EP 0893803 B1 EP0893803 B1 EP 0893803B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- wire
- electrically conducting
- core
- coating
- layer
- 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
Links
Images
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
- H01B13/00—Apparatus or processes specially adapted for manufacturing conductors or cables
- H01B13/0026—Apparatus for manufacturing conducting or semi-conducting layers, e.g. deposition of metal
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
- H01B5/00—Non-insulated conductors or conductive bodies characterised by their form
- H01B5/008—Fence-wire not otherwise provided for
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
- H01B5/00—Non-insulated conductors or conductive bodies characterised by their form
- H01B5/14—Non-insulated conductors or conductive bodies characterised by their form comprising conductive layers or films on insulating-supports
Definitions
- the present invention relates to a wire electrically conductive, this wire being intended, more particularly but not exclusively, replacement current threads or braids used for the realization electric fencing.
- a first known type of fence wire electrical consists of a soul in the form of synthetic monofilament, around which is wrapped helically at least one electrically conductive wire.
- the synthetic monofilament in particular made of polyamide or polyester, with a diameter of around 1 to 2 mm, is very oriented so as to have good resistance mechanical, and it is very little retracted so that it does not can't relax due to humidity, rain or solar radiation.
- the wires electrically one, two or more weak conductors section relative to that of the core, are wound by covering, with a greater or lesser propeller pitch, around of soul.
- These electrically conductive wires are made of metal or alloy, preferably steel stainless to prevent rust on contact with rain and moisture laden air.
- a second known type of wire for fencing electric includes, instead of the soul of the type previous, synthetic multifilaments which are assembled, twisted and wired. In these multifilaments one or more wires are inserted electrically conductors, in particular stainless steel. This second type has the advantage of being more flexible than the first, and to require elementary threads of lesser quality.
- a third type of conductor for fences electrical consists of a flat braid, more or narrower, made from multiple filaments, the some being synthetic filaments and the others being consisting of one or more electric wires conductors, inserted between the synthetic filaments, the product thus obtained being relatively solid.
- the threads or braids for electric fences therefore result from the assembly of at at least one plastic wire, so electrically insulator, and one or more wires electrically conductors, preferably stainless steel, which appear on the surface of the final product.
- wires electrically conductors preferably stainless steel
- plastic parts wires or braids for electric fences are exposed to solar ultraviolet radiation, and for increase the longevity of these threads or braids, their plastic parts are additivated with agents anti-ultraviolet.
- these agents are themselves gradually destroyed by ultraviolet rays, and after a few years, they lose their effect. So the interest of such agents remains quite low, and it must also be noted that anti-ultraviolet agents are expensive substances.
- the outer layer consists of a coating in which particles are embedded conductive, the coating being here in material synthetic, therefore insulating, which leaves some doubts on the electrical conduction qualities of the wire.
- the present invention aims to remedy the whole previous disadvantages, by proposing a thread electrically conductive new design and simple, usable especially as wire for fencing electric, which is simple and economical to manufacture, which is resistant to ultraviolet rays and weather conditions, and which eliminates the risk of breakage (or break in electrical continuity) of the conducting wires current.
- the invention essentially has for object an electrically conductive wire, which includes a monofilament type core, of synthetic material, which is coated with an electrically formed coating conductive, alone forming a layer longitudinally continuous, electrically conductive.
- the conductive coating results in particular from the application, on the outer surface of the core wire, electrically conductive metal powder or carbon.
- An electrically conductive wire is thus obtained, and more particularly a conducting thread on the surface, composed of a synthetic insulating core conferring on the wire its mechanical characteristics, and of a coating conductor whose thickness determines the cross-section of passage of electric current.
- the electrically conductive wire thus obtained, has good mechanical characteristics and electric. In particular, it is less fragile than a wire or conventional braid for electric fencing, the presence of a continuous conductive outer layer eliminating the risk of breakage of a low section.
- the conductive coating constituting a continuous layer preferably covering all of its circumference of the plastic core, ensures total opacity to ultraviolet rays, protecting the soul against any degradation due to radiation.
- Such an electrically conductive wire can be industrially obtained in a rational way and economical, the conductive coating can be applied on the plastic core by a process of coextrusion, coating or soaking, implemented in continued.
- the process of obtaining the wire electrically conductive, object of the invention can consist, on an extruded and drawn core thread, scrolling in continuous, coating with a bonding agent, followed by dusting of the conductive particles intended to form the electrically conductive layer, then firing permanently fixing the conductive coating on the soul thread.
- the electrically conductive wire, finally obtained can be easily wound on reels, without degradation of its electrical characteristics.
- the core wire can, in one embodiment simple, have a round section. He can also have a star or serrated profile, which first advantage of increasing the adhesion surface of the coating conductor, and to improve the attachment of the latter on the soul thread.
- An added benefit of this configuration is to guarantee electrical continuity, even if the wire is scratched or worn out because the conductive particles at the bottom of the grooves, located between the "teeth" of the soul, are brought to protected from scratches or other surface aggressions thread.
- the layer formed by particles electrically conductive forms, necessarily, the outer surface of the wire.
- the layer formed by electrically conductive particles can be, itself, covered with an insulating coating, which then forms the outer surface of the object wire present invention.
- a particular application, entering as part of this last embodiment of the invention is the production of a coaxial cable, in which an electrically conductive central wire is embedded in the insulating core, in synthetic material, surrounded by the conductive layer formed by the particles electrically conductive, this conductive layer being itself covered with an insulating coating.
- the layer formed of electrically conductive particles here replaces the traditional copper braid of cables coaxial, such as those used in the field of television, which leads to a simpler structure and to a more economical manufacture of this kind of cables electric.
- Figure 1 shows a short section of a wire electrically conductive 1, which can in particular be a wire for electric fences, showing the section of this wire.
- the electrically conductive wire 1 is consists of a core wire 2, here of round section, which is electrically coated on all sides conductor 3, in particular forming the outer surface 4 of the wire 1.
- the core wire 2 is a polyamide or other wire synthetic material, electrically insulating, of the type monofilament.
- the conductive coating 3 consists of fine particles of electrically conductive metal, preferably stainless, or carbon. This coating 3 forms a continuous electrically conductive layer, annular section, allowing current flow electric from one point to another of wire 1, whatever the remoteness of these points. The presence of this layer conductive on the surface 4 of the wire makes it suitable for constitute a wire for electric fence.
- Figure 2 shows a short section of wire electrically conductive 1, constituting a variant of the previous.
- the core wire 2 made of insulating synthetic material here presents a star or serrated section, which increases the adhesion area of the conductive coating 3, and which guarantees the longitudinal continuity of the layer conductive. Indeed, the conductive material located at bottom of the longitudinal grooves of the core 2, formed between teeth 5 of this core, is preserved in case of local degradation of the outer surface 4 of the wire 1.
- Figure 3 illustrates obtaining the wire electrically conductive 1 previously described, according to a particular process.
- the core thread 2 in material synthetic, previously manufactured by extrusion and stretching, scrolls continuously according to arrow 6.
- On the wire of core 2 is carried out, by a projection device or of appropriate application 7, coating with an agent adhesion 8.
- a dusting device 9 projects the conductive particles onto the core wire 2 10, such as metal powder, intended to form the conductive coating 3.
- the assembly finally passes through an oven 11, which definitively fixes the coating conductor 3, formed of particles 10, on the core wire 2, so as to get the wire electrically at the outlet driver 1 corresponding to the description given more top with reference to Figures 1 and 2.
- This wire electrically conductive 1 can be finally wound around a take-up reel, not shown.
- FIG 4 shows another wire electrically conductor 1 according to the invention, which constitutes a coaxial cable such as those used in the field of television.
- This wire 1 also comprises an insulating core 2, coated with a conductive coating 3.
- a conductive coating 3 In the core 2, always made of insulating synthetic material, finds an electrically conductive central wire 12 embedded, such as a small section copper wire.
- the coating conductor 3, consisting of a powder of metal or carbon applied to the core 2, is itself covered by an insulating coating 13, of the sheath type, forming the outer surface of the coaxial cable.
- the coating conductor 3 of the core 2 constitutes here the conductor outer, annular section, coaxial cable and it replaces the traditionally included copper braid in coaxial cables.
- the conductive coating does not form not necessarily a layer covering the core over any its circumference; ; we can consider a layer conductive covering only partially the core, in particular a conductive layer subdivided in the form of parallel, straight or helically wound bands around the soul, which can provide savings of conductive material (however by reducing correlatively the protection of the soul against ultraviolet rays).
- the uses of this electrically conductive wire is not limited to electric and coaxial fencing, and they include other electrical applications including low voltage, for which the conductive coating provides sufficient passage cross-section for current electric, without presenting any danger.
Landscapes
- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Insulated Conductors (AREA)
- Superconductors And Manufacturing Methods Therefor (AREA)
- Slide Fasteners, Snap Fasteners, And Hook Fasteners (AREA)
- Communication Cables (AREA)
Description
Claims (13)
- Fil électriquement conducteur, caractérisé en ce qu'il comprend une âme (2) de type monofilament, en matière synthétique, qui est enrobée d'un revêtement (3) formé de particules électriquement conductrices, formant à elles seules une couche longitudinalement continue, électriquement conductrice.
- Fil électriquement conducteur selon la revendication 1, caractérisé en ce que son âme (2) est constituée par un monofilament en polyamide.
- Fil électriquement conducteur selon la revendication 1 ou 2, caractérisé en ce que le revêtement conducteur (3) résulte de l'application, sur la surface extérieure du fil d'âme (2), d'une poudre de métal électriquement conducteur ou de carbone.
- Fil électriquement conducteur selon l'une quelconque des revendications 1 à 3, caractérisé en ce que le revêtement conducteur (3) constitue une couche continue recouvrant sur toute sa circonférence l'âme (2) en matière synthétique.
- Fil électriquement conducteur selon l'une quelconque des revendications 1 à 3, caractérisé en ce que le revêtement conducteur (3) est constitué par une couche conductrice ne recouvrant que partiellemnet l'âme (2), notamment une couche conductrice subdivisée sous forme de bandes parallèles, rectilignes ou enroulées en hélice autour de l'âme (2).
- Fil électriquement conducteur selon l'une quelconque des revendications 1 à 5, caractérisée en ce que son âme (2) possède une section ronde.
- Fil électriquement conducteur selon l'une quelconque des revendications 1 à 5, caractérisé en ce que son âme (2) possède un profil en étoile ou dentelé.
- Fil électriquement conducteur selon l'une quelconque des revendications 1 à 7, caractérisé en ce que la couche formée par les particules électriquement conductrices (3) forme la surface extérieure (4) dudit fil (1).
- Fil électriquement conducteur selon la revendication 8, caractérisé en ce qu'il constitue un fil (1) pour clôtures électriques.
- Fil électriquement conducteur selon l'une quelconque des revendications 1 à 7, caractérisé en ce que la couche formée par les particules électriquement conductrices (3) est, elle-même, recouverte d'un revêtement isolant (13), qui forme la surface extérieure du fil (1).
- Fil électriquement conducteur selon la revendication 10, caractérisé en ce qu'il constitue un câble coaxial (1), dans lequel un fil électriquement conducteur central (12) est noyé dans l'âme (2) en matière synthétique, entourée par la couche conductrice formée par les particules électriquement conductrices (3), cette couche conductrice étant elle-même recouverte d'un revêtement isolant (13).
- Fil électriquement conducteur selon l'une quelconque des revendications 1 à 11, caractérisé en ce que le revêtement conducteur (3) est appliqué sur l'âme (2) en matière synthétique par un procédé de coextrusion, d'enduction ou de trempage, mis en oeuvre en continu.
- Fil électriquement conducteur selon la revendication 12, caractérisé en ce qu'il est obtenu en procédant, sur un fil d'âme (2) extrudé et étiré défilant en continu, à une enduction avec un agent d'adhérence (8), suivie d'un poudrage des particules (10) destinées à former la couche électriquement conductrice (3), puis d'une cuisson fixant définitivement le revêtement conducteur (3) sur le fil d'âme (2).
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR9708300 | 1997-06-25 | ||
FR9708300A FR2765384B1 (fr) | 1997-06-25 | 1997-06-25 | Fil electriquement conducteur |
Publications (2)
Publication Number | Publication Date |
---|---|
EP0893803A1 EP0893803A1 (fr) | 1999-01-27 |
EP0893803B1 true EP0893803B1 (fr) | 2002-10-02 |
Family
ID=9508707
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP98420103A Expired - Lifetime EP0893803B1 (fr) | 1997-06-25 | 1998-06-19 | Fil électriquement conducteur |
Country Status (6)
Country | Link |
---|---|
EP (1) | EP0893803B1 (fr) |
AT (1) | ATE225559T1 (fr) |
DE (1) | DE69808395T2 (fr) |
ES (1) | ES2183307T3 (fr) |
FR (1) | FR2765384B1 (fr) |
PT (1) | PT893803E (fr) |
Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
NO20033139D0 (no) | 2003-07-09 | 2003-07-09 | Geir Jensen | Elektrisk ledende strengorgan |
FR2933804B1 (fr) * | 2008-07-10 | 2012-04-27 | Leoni Wiring Systems France | Cable electrique et procede de fabrication de ce cable. |
Family Cites Families (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3247020A (en) * | 1962-01-02 | 1966-04-19 | Owens Corning Fiberglass Corp | Electrically-conductive elements and their manufacture |
NL6500145A (fr) * | 1965-01-07 | 1966-07-08 |
-
1997
- 1997-06-25 FR FR9708300A patent/FR2765384B1/fr not_active Expired - Fee Related
-
1998
- 1998-06-19 ES ES98420103T patent/ES2183307T3/es not_active Expired - Lifetime
- 1998-06-19 AT AT98420103T patent/ATE225559T1/de not_active IP Right Cessation
- 1998-06-19 EP EP98420103A patent/EP0893803B1/fr not_active Expired - Lifetime
- 1998-06-19 PT PT98420103T patent/PT893803E/pt unknown
- 1998-06-19 DE DE69808395T patent/DE69808395T2/de not_active Expired - Fee Related
Also Published As
Publication number | Publication date |
---|---|
FR2765384A1 (fr) | 1998-12-31 |
PT893803E (pt) | 2003-01-31 |
ATE225559T1 (de) | 2002-10-15 |
EP0893803A1 (fr) | 1999-01-27 |
FR2765384B1 (fr) | 1999-08-20 |
DE69808395D1 (de) | 2002-11-07 |
DE69808395T2 (de) | 2003-06-18 |
ES2183307T3 (es) | 2003-03-16 |
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