EP1577901B1 - Multifilament wire - Google Patents
Multifilament wire Download PDFInfo
- Publication number
- EP1577901B1 EP1577901B1 EP04290643A EP04290643A EP1577901B1 EP 1577901 B1 EP1577901 B1 EP 1577901B1 EP 04290643 A EP04290643 A EP 04290643A EP 04290643 A EP04290643 A EP 04290643A EP 1577901 B1 EP1577901 B1 EP 1577901B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- tape
- conductors
- nipple
- unit
- wires
- 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
- 239000004020 conductor Substances 0.000 claims abstract description 17
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 14
- 239000000463 material Substances 0.000 claims abstract description 9
- 238000000034 method Methods 0.000 claims abstract description 9
- 238000004519 manufacturing process Methods 0.000 claims abstract description 5
- 210000002445 nipple Anatomy 0.000 claims description 13
- 238000009413 insulation Methods 0.000 claims description 4
- 230000008961 swelling Effects 0.000 claims description 4
- 239000004033 plastic Substances 0.000 claims description 3
- 229920003023 plastic Polymers 0.000 claims description 3
- 229920002678 cellulose Polymers 0.000 claims 2
- 239000001913 cellulose Substances 0.000 claims 2
- 238000004891 communication Methods 0.000 abstract description 8
- 239000004698 Polyethylene Substances 0.000 abstract description 2
- -1 polyethylene Polymers 0.000 abstract description 2
- 229920000573 polyethylene Polymers 0.000 abstract description 2
- 239000000843 powder Substances 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 2
- 239000000835 fiber Substances 0.000 description 2
- 238000004026 adhesive bonding Methods 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
- 210000001367 artery Anatomy 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 238000013016 damping Methods 0.000 description 1
- 239000011888 foil Substances 0.000 description 1
- 230000002209 hydrophobic effect Effects 0.000 description 1
- 239000011810 insulating material Substances 0.000 description 1
- 239000000565 sealant Substances 0.000 description 1
- 238000007493 shaping process Methods 0.000 description 1
- 239000012815 thermoplastic material Substances 0.000 description 1
- 238000004804 winding Methods 0.000 description 1
Images
Classifications
-
- 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
Definitions
- the invention relates to a stranding for a longitudinally watertight communication cable according to the preamble of claim 1 and a method for producing a stranding for a longitudinally watertight communication cable according to the preamble of claim. 7
- a star quad is known in which a cord of paper is used as the central dummy element. So that the star quad is sealed against longitudinal water, the cord is provided with a swelling on access of water powder.
- the stranded plastic carrier thread may be provided with a powder which increases its volume in the presence of water.
- a communication cable in which a star quad is located within a shell.
- the strands of the star quad have insulation in which a plurality of fibers are introduced, which protrude radially outward.
- the fibers are made of a cellulosic material.
- the DE 198 39 900 A describes a telecommunications cable with a star quad, which is surrounded by a jacket.
- damping elements of swelling yarn are arranged in the center of the star quad as well as in the stranding gussets.
- the stranding is surrounded by a winding of swellable nonwoven.
- a communication cable in which a wire bundle is embedded in a layer of hydrophobic material.
- the bundle of wires is surrounded by a sleeve of paper.
- An overlying outer jacket is constructed in the manner of a layer jacket with an aluminum foil and a layer of insulating material. Between the shell and the layer jacket, a layer of a thermoplastic material is provided, which is filled with a powder which swells upon access of water.
- the US-A-3,328,514 describes an aerial cable with a wire pair, which is surrounded by a band-shaped enclosure.
- the sheath consists of a material that swells when it enters the water.
- a medium voltage cable which consists of three insulated conductors, located in the interstices between the conductors filling elements and an outer jacket.
- the filling elements are wrapped in a spiral with a band of a material that swells on access of water.
- a communication cable with stranding units made according to this method is absolutely longitudinally watertight and passes the prescribed tests for longitudinal watertightness.
- a serious disadvantage, however, is that the source yarns used are very expensive. Another disadvantage is that the production speed is drastically reduced by the wrapping of the stranding with the source yarn.
- the present invention has for its object to provide a stranding, which is much cheaper to produce.
- FIGS. 1 and 2 schematically illustrated embodiments explained in more detail.
- FIG. 1 a section through a stranding according to the teachings of the invention.
- FIG. 2 a side view of an apparatus with which the method according to the teachings of the invention is feasible.
- the FIG. 1 shows a star quad made up of four wires. Each wire has an electrical conductor 1 and a layer 2 of an insulating z. As polyethylene.
- the four wires are twisted together to improve the transmission characteristics of the star quad.
- FIG. 1 A variety of in FIG. 1 shown star quads are combined to form a telecommunications cable, the star quads are stranded together to layers and bundles.
- the four wires are enveloped by a band 3, whose one band edge portion 3a projects into the gusset formed by the four wires in the interior of the star quad.
- the band 3 consists of a material that swells on the passage of water and, in the event of water entering the telecommunications cable, seals the gusset area and the gussets located between the wires.
- the material is a swellable nonwoven.
- a known in the cable technology insulating paper has proven to be particularly advantageous.
- the band 3 extends over the entire length of the star quad.
- the wires 4, 5, 6 and 7 are continuously withdrawn from the coils 8, 9, 10 and 11 and fed to a nipple 12.
- the inner diameter of the nipple 12 is dimensioned so that each of the wires 4 to 7 touches the bore. After exiting the nipple 12, the wires 4 to 7 wound on a drum 13 which is driven in the direction of arrow 14 by a motor, not shown.
- the drum 13 is rotated about the axis x, whereby the four wires are stranded together (see arrow 15).
- a shaping device 16 is arranged before the nipple 12. This forming device 16 is fed to the withdrawn from a coil 17 band 3, in which an edge portion 3a of the band 3 is folded by approximately 90 °.
- the wires are supplied to the nipple 12 so that the edge region 3a comes to lie between two wires, as shown in the FIG. 1 is shown.
- the remaining area of the band 3 is placed around the core bundle in front of the nipple 12 or in the nipple 12. The band 3 thus participates in the stranding.
Landscapes
- Communication Cables (AREA)
- Insulated Conductors (AREA)
- Processes Specially Adapted For Manufacturing Cables (AREA)
- Ropes Or Cables (AREA)
Abstract
Description
Die Erfindung betrifft einen Verseilverband für ein längswasserdichtes Nachrichtenkabel nach dem Oberbegriff des Anspruchs 1 sowie ein Verfahren zur Herstellung eines Verseilverbandes für ein längswasserdichtes Nachrichtenkabel nach dem Oberbegriff des Anspruchs 7.The invention relates to a stranding for a longitudinally watertight communication cable according to the preamble of
Aus dem GM 81 30 044 ist ein Sternvierer bekannt, bei dem als zentrales Blindelement eine Kordel aus Papier benutzt wird. Damit der Sternvierer gegen Längswasser dicht ist, ist die Kordel mit einem beim Zutritt von Wasser aufquellenden Pulver versehen.From the GM 81 30 044 a star quad is known in which a cord of paper is used as the central dummy element. So that the star quad is sealed against longitudinal water, the cord is provided with a swelling on access of water powder.
Aus der
Aus der
Aus der
Die
Aus der
Die
Aus der
Diese bekannten Lösungen konnten aber das Problem der Längswasserdichtigkeit nicht vollends lösen.However, these known solutions could not completely solve the problem of longitudinal water-tightness.
In der Technik der Nachrichtenkabel hat sich eine Lösung durchgesetzt, bei welcher die zentrale Blindader aus einem sogenannten Quellgarn besteht. Zusätzlich ist eine Umspinnung des Verseilverbandes mit einem Quellgarn vorgesehen. Ein Nachrichtenkabel mit nach dieser Methode hergestellten Verseileinheiten ist absolut längswasserdicht und besteht die vorgeschriebenen Tests für die Längswasserdichtigkeit.In the technology of communication cables, a solution has prevailed in which the central dummy core consists of a so-called source yarn. In addition, a wrapping of Verseilverbandes is provided with a source yarn. A communication cable with stranding units made according to this method is absolutely longitudinally watertight and passes the prescribed tests for longitudinal watertightness.
Ein gravierender Nachteil besteht jedoch darin, daß die verwendeten Quellgarne sehr teuer sind. Ein weiterer Nachteil besteht darin, daß durch die Umspinnung des Verseilverbandes mit dem Quellgarn die Fertigungsgeschwindigkeit drastisch verringert wird.A serious disadvantage, however, is that the source yarns used are very expensive. Another disadvantage is that the production speed is drastically reduced by the wrapping of the stranding with the source yarn.
Ausgehend von dieser Problematik liegt der vorliegenden Erfindung die Aufgabe zugrunde, einen Verseilverband anzugeben, welcher wesentlich kostengünstiger herstellbar ist.Based on this problem, the present invention has for its object to provide a stranding, which is much cheaper to produce.
Diese Aufgabe wird durch die im Kennzeichen der Ansprüche 1 und 7 angeführten Merkmale gelöst.This object is solved by the features cited in the characterizing part of
Weitere vorteilhafte Ausgestaltungen der Erfindung sind in den Unteransprüchen erfaßt.Further advantageous embodiments of the invention are covered in the subclaims.
Die Erfindung ist anhand der in den
Die
Die vier Adern sind miteinander verseilt, um die Übertragungseigenschaften des Sternvierers zu verbessern.The four wires are twisted together to improve the transmission characteristics of the star quad.
Eine Vielzahl der in
Die vier Adern sind von einem Band 3 umhüllt, dessen einer Bandkantenbereich 3a in den durch die vier Adern im Innern des Sternvierers gebildeten Zwickel hineinragt. Das Band 3 besteht aus einem bei Zustritt von Wasser quellendem Material und dichtet im Falle eines Wassereintritts in das Fernmeldekabel den Zwickelbereich und die zwischen den Adern außen gelegenen Zwickel ab.The four wires are enveloped by a
Als Material eignet sich ein Quellvlies. Als besonders vorteilhaft hat sich jedoch ein in der Kabeltechnik bekanntes Isolierpapier erwiesen.The material is a swellable nonwoven. However, a known in the cable technology insulating paper has proven to be particularly advantageous.
Das Band 3 erstreckt sich über die gesamte Länge des Sternvierers.The
Die Herstellung des Sternvierers soll anhand der
Die Adern 4, 5, 6 und 7 werden von den Spulen 8, 9, 10 und 11 kontinuierlich abgezogen und einem Nippel 12 zugeführt.The
Der Innendurchmesser des Nippels 12 ist so bemessen, daß jede der Adern 4 bis 7 die Bohrung berührt. Nach dem Austritt aus dem Nippel 12 werden die Adern 4 bis 7 auf eine Trommel 13 aufgewickelt, die in Richtung des Pfeiles 14 von einem nicht dargestellten Motor angetrieben wird.The inner diameter of the
Die Trommel 13 wird um die Achse x gedreht, wodurch die vier Adern miteinander verseilt werden (s. Pfeil 15).The drum 13 is rotated about the axis x, whereby the four wires are stranded together (see arrow 15).
Vor dem Nippel 12 ist eine Formvorrichtung 16 angeordnet. Dieser Formvorrichtung 16 wird das von einer Spule 17 abgezogene Band 3 zugeführt, in welcher ein Randbereich 3a des Bandes 3 um ca. 90° abgekantet wird.Before the
Die Adern werden dem Nippel 12 so zugeführt, daß der Randbereich 3a zwischen zwei Adern zu liegen kommt, wie es in der
Wird die Schlaglänge des Sternvierers 18 nicht zu groß gewählt, ist eine Fixierung des Bandes 3 auf der Oberfläche des Sternvierers 18 nicht erforderlich.If the lay length of the
Bei einer großen Schlaglänge ist es vorteilhaft bzw. könnte er erforderlich sein, den außen liegenden Bereich des Bandes 3 durch Kleben zu fixieren.With a large lay length, it is advantageous or it could be necessary to fix the outer area of the
Claims (12)
- A unit with a plurality of stranded conductors (1) for the use with a waterproof telecommunication cable, characterized in that the unit of conductors (1) is surrounded by a tape (3) which is applied in longitudinal direction and consists of a water swelling material and at least one of the longitudinal edges (3a) of the tape (3) penetrates into the interstice between the conductors (1) of the unit.
- A unit according to c laim 1, characterized in that the tape (3) consists of a fleece.
- A unit according to claim 1, characterized in that the tape (3) is made of cellulose.
- A unit according to claim 3, characterized in that the tape (3) is made of insulation paper.
- A unit according to claim 3 or 4, characterized in that the tape (3) has a thickness of 0,05 mm to 0,25 mm.
- A unit according to one of the claims 1 to 5, characterized in that it is a starquad and the conductors have a plastic insulation.
- A method for the production of a unit with a plurality of stranded conductors for a telecommunicationcable which is water proof in longitudinal direction, by which a plurality of insulated conductors is drawn off from delivery spools, introduced into a nipple and behind the nipple are wound onto a spool, which is rotated continuously around an axis which is transverse to its axis of rotation, thereby causing a stranding of the conductors between the nipple and the spool, characterized that parallel to the conductors a tape is inserted into the nipple which consists of a water swelling material and is formed such, that it surrounds the conductors and penetrates at least with one edge into the interstice between the conductors.
- A method according to claim 7, characterized in that the tape is a fleece.
- A method according to claim 7, characterized in that the tape is made of cellulose.
- A method according to claim 9, characterized in that the tape is made of insulation paper.
- A method according to one of the claims 7 to 10, characterized in that the tape which is drawn of from a delivery spool is formed within a forming station such, that one of the edgesofthe tape is bend, the bended area before entering the nipple is positioned between two conductors and the rest of the tape is wound around the conductors before or within the nipple.
- A method according to one of the claims 7 to 11, characterized in that the tape which surrounds the unit of stranded conductors is fixed by adhesion.
Priority Applications (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
ES04290643T ES2346652T3 (en) | 2004-03-10 | 2004-03-10 | WIRING COVER OF MULTIPLE THREADS. |
DE502004011260T DE502004011260D1 (en) | 2004-03-10 | 2004-03-10 | Multi-strand stranding |
EP04290643A EP1577901B1 (en) | 2004-03-10 | 2004-03-10 | Multifilament wire |
AT04290643T ATE470940T1 (en) | 2004-03-10 | 2004-03-10 | MULTI-CORE STRANDING BRACKET |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP04290643A EP1577901B1 (en) | 2004-03-10 | 2004-03-10 | Multifilament wire |
Publications (2)
Publication Number | Publication Date |
---|---|
EP1577901A1 EP1577901A1 (en) | 2005-09-21 |
EP1577901B1 true EP1577901B1 (en) | 2010-06-09 |
Family
ID=34833785
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP04290643A Expired - Lifetime EP1577901B1 (en) | 2004-03-10 | 2004-03-10 | Multifilament wire |
Country Status (4)
Country | Link |
---|---|
EP (1) | EP1577901B1 (en) |
AT (1) | ATE470940T1 (en) |
DE (1) | DE502004011260D1 (en) |
ES (1) | ES2346652T3 (en) |
Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US7411132B1 (en) | 2006-11-03 | 2008-08-12 | General Cable Technologies Corporation | Water blocking electrical cable |
DE102010029233A1 (en) * | 2010-05-21 | 2011-11-24 | Garntec Gmbh | Filler cord and a method of making the same |
Family Cites Families (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3328514A (en) * | 1964-11-13 | 1967-06-27 | Bell Telephone Labor Inc | Shielded jacketed-pair communications wire |
CH610137A5 (en) * | 1975-11-26 | 1979-03-30 | Cossonay Cableries Trefileries | Telephone cable jacket |
FR2487107A1 (en) * | 1980-07-21 | 1982-01-22 | Pirelli Treficable | METHOD FOR IMPROVING THE LONGITUDINAL SEALING OF TELECOMMUNICATION CABLES |
DE19839900C2 (en) * | 1998-09-02 | 2002-06-20 | Draka Telekom Gmbh & Co Kg | Cables for telecommunications and security systems |
SE518026C2 (en) * | 2000-12-14 | 2002-08-20 | Nexans Iko Sweden Ab | Three-conductor cable with longitudinal waterproofing |
-
2004
- 2004-03-10 AT AT04290643T patent/ATE470940T1/en active
- 2004-03-10 EP EP04290643A patent/EP1577901B1/en not_active Expired - Lifetime
- 2004-03-10 ES ES04290643T patent/ES2346652T3/en not_active Expired - Lifetime
- 2004-03-10 DE DE502004011260T patent/DE502004011260D1/en not_active Expired - Lifetime
Also Published As
Publication number | Publication date |
---|---|
EP1577901A1 (en) | 2005-09-21 |
DE502004011260D1 (en) | 2010-07-22 |
ATE470940T1 (en) | 2010-06-15 |
ES2346652T3 (en) | 2010-10-19 |
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