NO812490L - PROCEDURE FOR IMPROVING DENSITY IN LONG-TOWED TELECOMMUNICATION CABLES - Google Patents
PROCEDURE FOR IMPROVING DENSITY IN LONG-TOWED TELECOMMUNICATION CABLESInfo
- Publication number
- NO812490L NO812490L NO812490A NO812490A NO812490L NO 812490 L NO812490 L NO 812490L NO 812490 A NO812490 A NO 812490A NO 812490 A NO812490 A NO 812490A NO 812490 L NO812490 L NO 812490L
- Authority
- NO
- Norway
- Prior art keywords
- water
- powder
- towed
- procedure
- long
- Prior art date
Links
- 238000000034 method Methods 0.000 title claims description 6
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 10
- 239000000843 powder Substances 0.000 claims description 5
- 229920002134 Carboxymethyl cellulose Polymers 0.000 claims description 4
- 229920000663 Hydroxyethyl cellulose Polymers 0.000 claims description 4
- 229920002153 Hydroxypropyl cellulose Polymers 0.000 claims description 4
- 235000010948 carboxy methyl cellulose Nutrition 0.000 claims description 4
- 239000003795 chemical substances by application Substances 0.000 claims description 4
- 235000010977 hydroxypropyl cellulose Nutrition 0.000 claims description 4
- 229920003088 hydroxypropyl methyl cellulose Polymers 0.000 claims description 4
- 235000010979 hydroxypropyl methyl cellulose Nutrition 0.000 claims description 4
- 229920002678 cellulose Polymers 0.000 claims description 3
- 239000001913 cellulose Substances 0.000 claims description 3
- 239000000945 filler Substances 0.000 claims description 3
- 230000002209 hydrophobic effect Effects 0.000 claims description 3
- 229920001083 polybutene Polymers 0.000 claims description 3
- 230000008961 swelling Effects 0.000 claims description 3
- 229920000896 Ethulose Polymers 0.000 claims description 2
- 239000001856 Ethyl cellulose Substances 0.000 claims description 2
- ZZSNKZQZMQGXPY-UHFFFAOYSA-N Ethyl cellulose Chemical compound CCOCC1OC(OC)C(OCC)C(OCC)C1OC1C(O)C(O)C(OC)C(CO)O1 ZZSNKZQZMQGXPY-UHFFFAOYSA-N 0.000 claims description 2
- 239000001859 Ethyl hydroxyethyl cellulose Substances 0.000 claims description 2
- 239000004354 Hydroxyethyl cellulose Substances 0.000 claims description 2
- 239000001768 carboxy methyl cellulose Substances 0.000 claims description 2
- 239000008112 carboxymethyl-cellulose Substances 0.000 claims description 2
- 229920006184 cellulose methylcellulose Polymers 0.000 claims description 2
- 229920001249 ethyl cellulose Polymers 0.000 claims description 2
- 235000019325 ethyl cellulose Nutrition 0.000 claims description 2
- 235000019326 ethyl hydroxyethyl cellulose Nutrition 0.000 claims description 2
- 235000019447 hydroxyethyl cellulose Nutrition 0.000 claims description 2
- 239000001863 hydroxypropyl cellulose Substances 0.000 claims description 2
- 239000001866 hydroxypropyl methyl cellulose Substances 0.000 claims description 2
- UFVKGYZPFZQRLF-UHFFFAOYSA-N hydroxypropyl methyl cellulose Chemical compound OC1C(O)C(OC)OC(CO)C1OC1C(O)C(O)C(OC2C(C(O)C(OC3C(C(O)C(O)C(CO)O3)O)C(CO)O2)O)C(CO)O1 UFVKGYZPFZQRLF-UHFFFAOYSA-N 0.000 claims description 2
- 229920000609 methyl cellulose Polymers 0.000 claims description 2
- 239000001923 methylcellulose Substances 0.000 claims description 2
- 235000010981 methylcellulose Nutrition 0.000 claims description 2
- 239000001993 wax Substances 0.000 claims description 2
- PEDCQBHIVMGVHV-UHFFFAOYSA-N Glycerine Chemical compound OCC(O)CO PEDCQBHIVMGVHV-UHFFFAOYSA-N 0.000 claims 2
- 235000011187 glycerol Nutrition 0.000 claims 1
- 239000000463 material Substances 0.000 description 3
- 239000000203 mixture Substances 0.000 description 3
- 239000004020 conductor Substances 0.000 description 2
- 238000001816 cooling Methods 0.000 description 2
- 230000007547 defect Effects 0.000 description 2
- 238000009472 formulation Methods 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 238000013508 migration Methods 0.000 description 2
- 230000005012 migration Effects 0.000 description 2
- QMGYPNKICQJHLN-UHFFFAOYSA-M Carboxymethylcellulose cellulose carboxymethyl ether Chemical compound [Na+].CC([O-])=O.OCC(O)C(O)C(O)C(O)C=O QMGYPNKICQJHLN-UHFFFAOYSA-M 0.000 description 1
- 229920002367 Polyisobutene Polymers 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- 238000009933 burial Methods 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000008602 contraction Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000001125 extrusion Methods 0.000 description 1
- 239000004744 fabric Substances 0.000 description 1
- 239000000499 gel Substances 0.000 description 1
- -1 hydroxyethylcarboxyethyl Chemical group 0.000 description 1
- 229910052500 inorganic mineral Inorganic materials 0.000 description 1
- 235000021388 linseed oil Nutrition 0.000 description 1
- 239000000944 linseed oil Substances 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 239000011707 mineral Substances 0.000 description 1
- 239000003921 oil Substances 0.000 description 1
- 235000019198 oils Nutrition 0.000 description 1
- 230000035515 penetration Effects 0.000 description 1
- 235000019271 petrolatum Nutrition 0.000 description 1
- 230000001681 protective effect Effects 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
- H01B3/00—Insulators or insulating bodies characterised by the insulating materials; Selection of materials for their insulating or dielectric properties
- H01B3/18—Insulators or insulating bodies characterised by the insulating materials; Selection of materials for their insulating or dielectric properties mainly consisting of organic substances
- H01B3/30—Insulators or insulating bodies characterised by the insulating materials; Selection of materials for their insulating or dielectric properties mainly consisting of organic substances plastics; resins; waxes
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
- H01B11/00—Communication cables or conductors
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
- H01B7/00—Insulated conductors or cables characterised by their form
- H01B7/17—Protection against damage caused by external factors, e.g. sheaths or armouring
- H01B7/28—Protection against damage caused by moisture, corrosion, chemical attack or weather
- H01B7/282—Preventing penetration of fluid, e.g. water or humidity, into conductor or cable
- H01B7/285—Preventing penetration of fluid, e.g. water or humidity, into conductor or cable by completely or partially filling interstices in the cable
- H01B7/288—Preventing penetration of fluid, e.g. water or humidity, into conductor or cable by completely or partially filling interstices in the cable using hygroscopic material or material swelling in the presence of liquid
Landscapes
- Physics & Mathematics (AREA)
- Spectroscopy & Molecular Physics (AREA)
- Insulated Conductors (AREA)
- Laying Of Electric Cables Or Lines Outside (AREA)
- Ropes Or Cables (AREA)
Description
Foreliggende oppfinnelse angår en fremgangsmåte for forbedring av lengderetningenstettheten i telekommunikasjons-kabler. The present invention relates to a method for improving the longitudinal density in telecommunications cables.
Brukere av elektriske kabler og spesielt av telekommuni-kas jonskabler ment til nedgraving krever tetthet i disse kabler i lengderetning slik at hvis vann skulle trenge inn i et skadet punkt i den beskyttende hylse under nedleggingen eller under arbeid som utføres i den sone der kabelen er nedgravet vil vandring av fuktighet på hver side av skadepunktet begrenses til en sone som er så liten som mulig. Users of electrical cables and especially of telecommunications cables intended for burial require tightness in these cables in the longitudinal direction so that if water were to penetrate a damaged point in the protective sleeve during laying or during work carried out in the zone where the cable is buried migration of moisture on either side of the damage point will be limited to a zone that is as small as possible.
Det er kjent å oppnå lengdetetthet i kabler ved å be-nytte hydrofobe blandinger av beklignende konsistens inneholdende blant andre ting linolje, polyisobutylener, forskjellige mineral-ladninger eller videre pastaer, belegg eller lignende, som også er hydrofobe, forskjellige typer naturlige eller syntetiske oljer, eller geleer slik som "petroleumgelé" anbrakt inne i gruppen av ledere. It is known to achieve longitudinal density in cables by using hydrophobic mixtures of a pitch-like consistency containing, among other things, linseed oil, polyisobutylenes, various mineral charges or further pastes, coatings or the like, which are also hydrophobic, various types of natural or synthetic oils, or gels such as "petroleum jelly" placed inside the group of conductors.
Det samme materiale kan benyttes mellom båndet som om-gir gruppen av ledere og det metalliske hylster, men under av-kjøling av kabelen etter at dette materiale er brakt på plass under ekstrudering tillater sammentrekning og virkningen av irregulariteter i diameteren ikke en tilstrekkelig tetthet til en hver tid. The same material may be used between the band surrounding the group of conductors and the metallic sleeve, but during cooling of the cable after this material has been brought into place during extrusion, contraction and the effect of irregularities in the diameter do not allow a sufficient tightness to a every time.
Oppfinnelsen angår en fremgangsmåte for å forbedre lengderetningstettheten og denne omfatter å fylle rommet mellom båndet og hylsteret med et fyllstoff i stand til svelling i nærvær av vann. Dette materiale avsettes fortrinnsvis på båndet og består av et pulver som sveller i vann slik som CMC, karboksymetylcellulose, eller slike derivater som HEC, hydroksyetyl-cellulose;' HECMC, hydroksyetylkarboksyetylcellulose; HPMC, hydroksypropylmetylcellulose; MC, metylcellulose; EC, etylcellu-lose; EHEC, etylhydroksyetylcellulose; HPC, hydroksypropylcellu-lose, benyttet alene eller i blanding, idet denne oppramsing ikke er begrensende, hvorved pulveret bæres av et viskøst middel som ikke eliminerer evnen til å svelle i nærvær av vann. Figur 1 viser et tverrsnitt av en telefonkabel. De relative proporsjoner av de forskjellige elementer er ikke overholdt for å gjøre tegningen lettere forståelig. The invention relates to a method for improving the longitudinal density and this comprises filling the space between the band and the casing with a filler capable of swelling in the presence of water. This material is preferably deposited on the belt and consists of a powder that swells in water such as CMC, carboxymethyl cellulose, or such derivatives as HEC, hydroxyethyl cellulose; HECMC, hydroxyethylcarboxyethyl cellulose; HPMC, hydroxypropylmethylcellulose; MC, methyl cellulose; EC, ethyl cellulose; EHEC, ethyl hydroxyethyl cellulose; HPC, hydroxypropyl cellulose, used alone or in admixture, this formulation not being limiting, whereby the powder is carried by a viscous agent which does not eliminate the ability to swell in the presence of water. Figure 1 shows a cross-section of a telephone cable. The relative proportions of the different elements have not been respected in order to make the drawing easier to understand.
Fra kjernen mot periferien finner man: en gruppe kabler 1, 2, 3, 4 som kombinerer et visst antall "telefonpar", belagt med et konvensjonelt fyllstoff 5, deretter et bånd 6 be-stående av papir, et papirbasert kompleks eller et ikke-vevet bånd, et aluminiumhylster 7 viklet rundt kabelen med et dekke 8, og en ytre hylse 9 hvortil det adherer en duk 7. From the core towards the periphery one finds: a group of cables 1, 2, 3, 4 which combine a certain number of "telephone pairs", coated with a conventional filler 5, then a band 6 consisting of paper, a paper-based complex or a non- woven tape, an aluminum sleeve 7 wrapped around the cable with a cover 8, and an outer sleeve 9 to which a cloth 7 adheres.
Pulveret som sveller i vann utgjør et mellomsjikt 10 mellom hylsteret 7 og båndet 6 på hvilket det fortrinnsvis er avsatt før eller under fremstilling av kabelen. The powder which swells in water constitutes an intermediate layer 10 between the casing 7 and the band 6 on which it is preferably deposited before or during the production of the cable.
Egnede viskøse midler hvoriGellulosederivatet kan dispergeres uten at det mister sin evne til å svelle i nærvær av vann omfatter spesielt polybuten, glycerih og vannoppløse-.\ lige vokser. Suitable viscous agents in which the cellulose derivative can be dispersed without losing its ability to swell in the presence of water include in particular polybutene, glycerih and water-soluble waxes.
På denne måte vil selv om krymping inntrer under av-kjøling av kabelen når denne forlater ekstruderen enhver -etterfølgende inntrengning av vann i sonen 10 forårsake svelling av det tette produkt og dette vil motsette seg vandring av fuktigheten langs kabelen. In this way, although shrinkage occurs during cooling of the cable as it leaves the extruder, any subsequent ingress of water into zone 10 will cause swelling of the dense product and this will oppose migration of the moisture along the cable.
Som et eksempel gir et preparat inneholdende: flytende polybuten med lav molekylvekt: 6 0 vektdeler CMC-pulver: 40 vektdeler utmerkede resultater. As an example, a formulation containing: liquid low molecular weight polybutene: 60 parts by weight CMC powder: 40 parts by weight gives excellent results.
Prøver på lengdegjennomtrengning av vann i henhold til standarden L 123/124 for post og telekommunikasjonsverket under den franske regjering har vist en defekt rate på 1% på 295 prøver av telefonkabler omfattende 112 par og forseglet i henhold til oppfinnelsen. Longitudinal water penetration tests according to the standard L 123/124 of the Postal and Telecommunications Agency of the French Government have shown a defect rate of 1% on 295 samples of telephone cables comprising 112 pairs and sealed according to the invention.
Den samme kabel av konvensjonell' konstruksjon førte til en defekt rate i størrelsesorden 5%. The same cable of conventional' construction led to a defect rate of the order of 5%.
Videre fører de i lengderetning tette kabler ifølge oppfinnelsen til vesentlig mindre grad av fremstillingsvrak. Furthermore, the longitudinally dense cables according to the invention lead to a significantly lower degree of manufacturing waste.
Claims (3)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FR8016299A FR2487107A1 (en) | 1980-07-21 | 1980-07-21 | METHOD FOR IMPROVING THE LONGITUDINAL SEALING OF TELECOMMUNICATION CABLES |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| NO812490L true NO812490L (en) | 1982-01-22 |
Family
ID=9244468
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| NO812490A NO812490L (en) | 1980-07-21 | 1981-07-20 | PROCEDURE FOR IMPROVING DENSITY IN LONG-TOWED TELECOMMUNICATION CABLES |
Country Status (11)
| Country | Link |
|---|---|
| AR (1) | AR226901A1 (en) |
| AU (1) | AU7273581A (en) |
| BR (1) | BR8104681A (en) |
| DE (1) | DE3128779A1 (en) |
| ES (1) | ES503522A0 (en) |
| FR (1) | FR2487107A1 (en) |
| GB (1) | GB2080998A (en) |
| IT (1) | IT1136683B (en) |
| NO (1) | NO812490L (en) |
| PT (1) | PT74381B (en) |
| SE (1) | SE8104460L (en) |
Families Citing this family (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2566955A1 (en) * | 1984-06-29 | 1986-01-03 | Cables De Lyon Geoffroy Delore | Composite sealing material for an electrical cable and process for its manufacture |
| GB8422458D0 (en) * | 1984-09-05 | 1984-10-10 | Telephone Cables Ltd | Cables |
| GB8425378D0 (en) * | 1984-10-08 | 1984-11-14 | Ass Elect Ind | Electrical cables |
| FR2575110B1 (en) * | 1984-12-21 | 1987-10-16 | Intissel Sa | WATERPROOFING COMPOSITE MATERIAL, ITS PREPARATION AND COMPOSITION FOR USE THEREOF, AS WELL AS ITS USES |
| US5256705A (en) * | 1986-03-26 | 1993-10-26 | Waterguard Industries, Inc. | Composition with tackifier for protecting communication wires |
| US5218011A (en) * | 1986-03-26 | 1993-06-08 | Waterguard Industries, Inc. | Composition for protecting the contents of an enclosed space from damage by invasive water |
| US5461195A (en) * | 1986-03-26 | 1995-10-24 | Waterguard Industries, Inc. | Filled telecommunications cable having temperature stable mutual capacitance |
| US4963695A (en) * | 1986-05-16 | 1990-10-16 | Pirelli Cable Corporation | Power cable with metallic shielding tape and water swellable powder |
| GB8704938D0 (en) * | 1987-03-03 | 1987-04-08 | Bp Chem Int Ltd | Cables |
| BR8807482A (en) * | 1987-05-01 | 1990-03-27 | Clarence S Freeman | COMPOSITION TO PROTECT TELECOMMUNICATIONS WIRES AND COMPOSITION TO PROTECT CABLES THAT CARRY CONTINUED CHAIN AGAINST WATER DAMAGE |
| US5010209A (en) * | 1988-12-20 | 1991-04-23 | Pirelli Cable Corp. | Power cable with water swellable agents and elongated metal elements outside cable insulation |
| NL9001960A (en) * | 1989-09-07 | 1991-04-02 | Felten & Guilleaume Energie | Removing traces of moisture from cable - by applying electrochemical mixt. of metal powders in or on material which swells up in water, seals cable, and decomposes water |
| EP1243004B1 (en) * | 1999-12-20 | 2006-11-08 | Prysmian Cavi e Sistemi Energia S.r.l. | Electric cable resistant to water penetration |
| ATE470940T1 (en) * | 2004-03-10 | 2010-06-15 | Nexans | MULTI-CORE STRANDING BRACKET |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| BE795126A (en) * | 1972-04-01 | 1973-05-29 | Kerpenwerk G M B H & Co | MATERIAL FOR SEALING, IN PARTICULAR ELECTRICAL CABLES, LONGITUDINALLY |
| ES202111Y (en) * | 1974-04-06 | 1976-11-01 | Standard Electrica, S. A. | IMPROVEMENTS IN ELECTRIC CABLES PROTECTED AGAINST PENETRATION OF WATER. |
| ZA786576B (en) * | 1978-11-22 | 1980-02-27 | South African Inventions | Waterproofing or insulated electric cables |
-
1980
- 1980-07-21 FR FR8016299A patent/FR2487107A1/en not_active Withdrawn
-
1981
- 1981-06-19 IT IT22434/81A patent/IT1136683B/en active
- 1981-06-26 AR AR285873A patent/AR226901A1/en active
- 1981-06-30 ES ES503522A patent/ES503522A0/en active Granted
- 1981-07-10 AU AU72735/81A patent/AU7273581A/en not_active Abandoned
- 1981-07-20 NO NO812490A patent/NO812490L/en unknown
- 1981-07-20 SE SE8104460A patent/SE8104460L/en not_active Application Discontinuation
- 1981-07-20 GB GB8122308A patent/GB2080998A/en not_active Withdrawn
- 1981-07-21 BR BR8104681A patent/BR8104681A/en unknown
- 1981-07-21 DE DE19813128779 patent/DE3128779A1/en not_active Withdrawn
-
1982
- 1982-02-03 PT PT74381A patent/PT74381B/en unknown
Also Published As
| Publication number | Publication date |
|---|---|
| AU7273581A (en) | 1982-09-16 |
| ES8205075A1 (en) | 1982-06-01 |
| GB2080998A (en) | 1982-02-10 |
| SE8104460L (en) | 1982-01-22 |
| ES503522A0 (en) | 1982-06-01 |
| IT1136683B (en) | 1986-09-03 |
| BR8104681A (en) | 1982-04-06 |
| IT8122434A0 (en) | 1981-06-19 |
| AR226901A1 (en) | 1982-08-31 |
| PT74381A (en) | 1982-03-01 |
| DE3128779A1 (en) | 1982-04-29 |
| FR2487107A1 (en) | 1982-01-22 |
| PT74381B (en) | 1983-09-27 |
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