WO1989006041A1 - Process and device for producing the insulating layer of a conductor - Google Patents

Process and device for producing the insulating layer of a conductor Download PDF

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Publication number
WO1989006041A1
WO1989006041A1 PCT/DE1988/000741 DE8800741W WO8906041A1 WO 1989006041 A1 WO1989006041 A1 WO 1989006041A1 DE 8800741 W DE8800741 W DE 8800741W WO 8906041 A1 WO8906041 A1 WO 8906041A1
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WO
WIPO (PCT)
Prior art keywords
conductor
nipple
insulating layer
producing
insulation
Prior art date
Application number
PCT/DE1988/000741
Other languages
German (de)
French (fr)
Inventor
Ulrich Priesnitz
Original Assignee
Siemens Aktiengesellschaft
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Siemens Aktiengesellschaft filed Critical Siemens Aktiengesellschaft
Publication of WO1989006041A1 publication Critical patent/WO1989006041A1/en

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Classifications

    • 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
    • B29C35/00—Heating, cooling or curing, e.g. crosslinking or vulcanising; Apparatus therefor
    • B29C35/02—Heating or curing, e.g. crosslinking or vulcanizing during moulding, e.g. in a mould
    • B29C35/08—Heating or curing, e.g. crosslinking or vulcanizing during moulding, e.g. in a mould by wave energy or particle radiation
    • B29C35/10—Heating or curing, e.g. crosslinking or vulcanizing during moulding, e.g. in a mould by wave energy or particle radiation for articles of indefinite length
    • 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
    • B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
    • B29C48/03—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor characterised by the shape of the extruded material at extrusion
    • B29C48/06—Rod-shaped
    • 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
    • B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
    • B29C48/15—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor incorporating preformed parts or layers, e.g. extrusion moulding around inserts
    • 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
    • B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
    • B29C48/25—Component parts, details or accessories; Auxiliary operations
    • B29C48/88—Thermal treatment of the stream of extruded material, e.g. cooling
    • B29C48/91—Heating, e.g. for cross linking
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
    • G02B6/44—Mechanical structures for providing tensile strength and external protection for fibres, e.g. optical transmission cables
    • G02B6/4479—Manufacturing methods of optical cables
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
    • G02B6/44—Mechanical structures for providing tensile strength and external protection for fibres, e.g. optical transmission cables
    • G02B6/4479—Manufacturing methods of optical cables
    • G02B6/448—Ribbon cables
    • 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
    • H01B13/06—Insulating conductors or cables
    • H01B13/14—Insulating conductors or cables by extrusion
    • 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
    • H01B13/06—Insulating conductors or cables
    • H01B13/14—Insulating conductors or cables by extrusion
    • H01B13/145—Pretreatment or after-treatment
    • 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
    • B29C35/00—Heating, cooling or curing, e.g. crosslinking or vulcanising; Apparatus therefor
    • B29C35/02—Heating or curing, e.g. crosslinking or vulcanizing during moulding, e.g. in a mould
    • B29C35/08—Heating or curing, e.g. crosslinking or vulcanizing during moulding, e.g. in a mould by wave energy or particle radiation
    • B29C35/0805—Heating or curing, e.g. crosslinking or vulcanizing during moulding, e.g. in a mould by wave energy or particle radiation using electromagnetic radiation
    • B29C2035/0827—Heating or curing, e.g. crosslinking or vulcanizing during moulding, e.g. in a mould by wave energy or particle radiation using electromagnetic radiation using UV radiation
    • 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
    • B29C35/00—Heating, cooling or curing, e.g. crosslinking or vulcanising; Apparatus therefor
    • B29C35/02—Heating or curing, e.g. crosslinking or vulcanizing during moulding, e.g. in a mould
    • B29C35/08—Heating or curing, e.g. crosslinking or vulcanizing during moulding, e.g. in a mould by wave energy or particle radiation
    • B29C35/0866—Heating or curing, e.g. crosslinking or vulcanizing during moulding, e.g. in a mould by wave energy or particle radiation using particle radiation
    • B29C2035/0877—Heating or curing, e.g. crosslinking or vulcanizing during moulding, e.g. in a mould by wave energy or particle radiation using particle radiation using electron radiation, e.g. beta-rays
    • 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
    • B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
    • 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
    • B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
    • B29C48/03—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor characterised by the shape of the extruded material at extrusion
    • B29C48/07—Flat, e.g. panels
    • B29C48/08—Flat, e.g. panels flexible, e.g. films
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29K—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES B29B, B29C OR B29D, RELATING TO MOULDING MATERIALS OR TO MATERIALS FOR MOULDS, REINFORCEMENTS, FILLERS OR PREFORMED PARTS, e.g. INSERTS
    • B29K2075/00—Use of PU, i.e. polyureas or polyurethanes or derivatives thereof, as moulding material
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29L—INDEXING SCHEME ASSOCIATED WITH SUBCLASS B29C, RELATING TO PARTICULAR ARTICLES
    • B29L2031/00—Other particular articles
    • B29L2031/34—Electrical apparatus, e.g. sparking plugs or parts thereof
    • B29L2031/3462—Cables

Definitions

  • the invention relates to a method for producing the insulation of an electrical and / or optical line.
  • lacquer insulation In the types of insulation known hitherto, a distinction is essentially made between lacquer insulation and insulation which are achieved by extrusion of plastics or by winding the conductor with insulating tapes. While the layer thicknesses in the case of paint-insulated lines are less than 20 ⁇ , the smallest layer thickness in the extrusion or strip technology is about 80 ⁇ m with normal manufacturing expenditure.
  • the insulating layer in the form of a liquid, solvent-free plastic
  • Varnish-based insulation significantly below and thereby enable the economical production of cable types that are used in some areas of technology, such as B. the optical fiber or the WRAP technology are desired.
  • the cables manufactured in this way also have the product properties defined for insulated conductors.
  • the invention takes advantage of the fact that plastic groups have become known in chemistry which are in the liquid state at normal temperature without the addition of solvents. For example, this includes special ones
  • Polyurethane acrylates and similar groups of substances often one Have a carbon double bond that breaks when energy is introduced (e.g. by ultraviolet or electron radiation), which changes the consistency of the substance. While the insulating materials applied by means of extrusion prevent the melt from falling below a certain layer thickness due to the high melt viscosity, the new substances enable the layer thickness to be reduced considerably using the method according to the invention.
  • the physical properties of the line are adjustable; this makes it easy to strip.
  • the touch technique is made easier.
  • the set-up times for the corresponding manufacturing device are extremely short. Multiple processes (e.g. 20) can be used. Lines with different colors can be produced in parallel. Very short lengths can be produced economically. Finally, even with multi-core braided cables, there are only low production costs.
  • a device is used to carry out the method according to the invention, in which the nipple nozzle system used to apply the liquid plastic is supplied with a largely pulsation-free conveying device. This ensures a very uniform thickness of the insulating layer when the liquid plastic is applied to the conductor to be coated. It is also important for such a device that the ratio of the clear nozzle to the nipple outer diameter is approximately equal to the ratio of the diameter of the line to be insulated and the bare conductor to be coated.
  • Fig. L is a schematic representation of the manufacturing process and Fig. 2 in an enlarged view details of the nipple nozzle system of the application device.
  • Fig. 1 shows the manufacturing scheme for the new method.
  • a drain device not shown, which consists of a single wire or also of strands and can have a diameter of approximately 0.2 to 0.04 mm
  • the resulting line 11 by coating with a thin plastic layer (layer thickness about 20 to 150 microns) is passed immediately after the coating process through an irradiation system 15, which is associated with a reflector system 16, so that the diffuse radiation thus caused an all-round hardening of the line 11 results.
  • a thin plastic layer layer thickness about 20 to 150 microns
  • Irradiation system 15 is followed by a diameter control device 17 before the line is fed to a winding device, not shown.
  • the arrow 18 indicates the working direction of the entire system.
  • the nipple-nozzle system 20 shown in detail in FIG. 2 of the ring device 13 essentially consists of a nipple 21, the outer diameter of which is denoted by D., and of a nozzle 22, the inside diameter of which is denoted by D n is.
  • the nipple and nozzle together form an annular gap
  • the diameter of the conductor and the line are denoted by d- and d ⁇ .
  • the geometric relationships of the nipple-nozzle system are optimal if the equation

Abstract

A novel process and a novel device useful for applying an insulating layer on a conductor (10) use liquid, solvent-free plastics which can be applied to the conductor by a process similar to extrusion. The insulating layers so obtained are of minimal thickness similar to those of insulating lacquers.

Description

Vorrichtung und Verfahren zur Herstellung der Isolationsschicht einer Leitung Device and method for producing the insulation layer of a line
Die Erfindung bezieht sich auf ein Verfahren zur Herstellung der Isolierung einer elekterischen und/oder optischen Leitung.The invention relates to a method for producing the insulation of an electrical and / or optical line.
Bei den bisher bekannten Isolierungsarten unterscheidet man im wesentlichen Lackisolierungen und Isolierungen, die durch Extrusion von Kunststoffen oder durch Bewickeln des Leiters mit isolierenden Bändern erzielt werden. Während die Schichtdicken bei lackisolierten Leitungen kleiner als 20 μ sind, ist die kleinste Schichtdicke bei der Extrusions- bzw. Bändertechnik bei normalem Fertigungsaufwand etwa 80 μm.In the types of insulation known hitherto, a distinction is essentially made between lacquer insulation and insulation which are achieved by extrusion of plastics or by winding the conductor with insulating tapes. While the layer thicknesses in the case of paint-insulated lines are less than 20 μ, the smallest layer thickness in the extrusion or strip technology is about 80 μm with normal manufacturing expenditure.
Im Hinblick auf eine zukunftorientierte Technik mit dem Ziel der Miπiaturisierung besteht daher die Aufgabe, eine Isolierung anzugeben, mit der der Schichtdickenbereich zwischen Lack- und Extrusionsisolierung ausgefüllt werden kann. Diese Aufgabe wird gemäß der Erfindung dadurch gelöst, daB die Isolierschicht in Form eines flüssigen, lösungsmittelfreien Kunststoffes mitWith regard to a future-oriented technology with the goal of miniaturization, there is therefore the task of specifying an insulation with which the layer thickness range between the lacquer and extrusion insulation can be filled. This object is achieved according to the invention in that the insulating layer in the form of a liquid, solvent-free plastic
Hilfe eines Nippel-Düsen-Systems auf den Leiter aufgebracht und anschließend durch Bestrahlung gehärtet wird.Is applied to the conductor with the aid of a nipple-nozzle system and then hardened by radiation.
Damit gelingt es, ohne besonderen Fertigungsaufwand die Schranke der Isolierschichtdicke von 80 μm bei nicht aufThis means that the barrier of the insulating layer thickness of 80 μm does not open without any special manufacturing effort
Lackbasis beruhenden Isolierungen erheblich zu unterschreiten und dadurch die wirtschaftliche Fertigung von Leitungstypen zu ermöglichen, die auf einigen Gebieten der Technik, wie z. B. der Lichtwellenleiter- oder der WRAP-Technik, erwünscht sind. Die so gefertigten Leitungen weisen auch die für isolierte Leiter definierten Produkteigeπschaften auf. Die Erfindung macht sich dabei den Umstand zunutze, daß in der Chemie Kunststoffgruppen bekannt geworden sind, die sich bei Normaltemperatur ohne Zusatz von Lösungsmitteln im flüssigen Zustand befinden. Beispielsweise gehören dazu spezielleVarnish-based insulation significantly below and thereby enable the economical production of cable types that are used in some areas of technology, such as B. the optical fiber or the WRAP technology are desired. The cables manufactured in this way also have the product properties defined for insulated conductors. The invention takes advantage of the fact that plastic groups have become known in chemistry which are in the liquid state at normal temperature without the addition of solvents. For example, this includes special ones
Polyurethan-Acrylate und ähnliche Stoffgruppen, die oft eine Kohlenstoff-Doppelbindung aufweisen, die beim Einbringen von Energie (z. B. durch Ultraviolett- oder Elektronenbestrahlung) aufbricht, wodurch sich die Konsistenz des Stoffes verändert. Während die mittels Extrusion aufgebrachten Isolierstoffe durch eine hohe Schmelzviskosität ein Unterschreiten einer bestimmten Schichtdicke verhindern, ermöglichen die neuen Stoffe mit Hilfe des erfindungsgemäßen Verfahrens eine wesentlich geringere Schichtdicke.Polyurethane acrylates and similar groups of substances, often one Have a carbon double bond that breaks when energy is introduced (e.g. by ultraviolet or electron radiation), which changes the consistency of the substance. While the insulating materials applied by means of extrusion prevent the melt from falling below a certain layer thickness due to the high melt viscosity, the new substances enable the layer thickness to be reduced considerably using the method according to the invention.
Mit dem neuen Verfahren werden ferner noch die nachstehend aufgeführten Vorteile erzielt:The new procedure also achieves the following advantages:
Die physikalischen Eigenschaften der Leitung sind einstellbar; dadurch bedingt ist eine leichte Abisolierbarkeit gegeben. Die Anschlagtechnik wird erleichtert. Die Rüstzeiten für die entsprechenden Fertigungsvorrichtung sind außerordentlich gering. Es lassen sich Mehrfachabläufe (z. B. 20) einsetzen. Es können parallel Leitungen mit unterschiedlichen Farben gefertigt werden. Sehr kurze Längen sind wirtschaftlich herstellbar. Schließlich treten auch bei mehradrigen beflochtenen Leitungen nur geringe Produktionskosten auf.The physical properties of the line are adjustable; this makes it easy to strip. The touch technique is made easier. The set-up times for the corresponding manufacturing device are extremely short. Multiple processes (e.g. 20) can be used. Lines with different colors can be produced in parallel. Very short lengths can be produced economically. Finally, even with multi-core braided cables, there are only low production costs.
In Ausgestaltung der Erfindung wird eine zur Durchführung des erfindungsgemäßen Verfahrens dienende Vorrichtung vorgesehen, bei der das zum Aufbringen des flüssigen Kunststoffes dienende Nippel-Düsen-System mit einer weitgehend pulsationsfreien Fördervorrichtung beaufschlagt ist. Dadurch wird eine sehr gleichmäßige Dicke der Isolierschicht beim Aufbringen des flüssigen Kunststoffes auf den zu beschichtenden Leiter sicher¬ gestellt. Wichtig für eine solche Vorrichtung ist ferner, daß das Verhältnis des lichten Düsen- zum Nippelaußendurchmesser etwa gleich dem Verhältnis der Durchmesser der zu isolierenden Leitung und des zu beschichtenden, blanken Leiters ist.In an embodiment of the invention, a device is used to carry out the method according to the invention, in which the nipple nozzle system used to apply the liquid plastic is supplied with a largely pulsation-free conveying device. This ensures a very uniform thickness of the insulating layer when the liquid plastic is applied to the conductor to be coated. It is also important for such a device that the ratio of the clear nozzle to the nipple outer diameter is approximately equal to the ratio of the diameter of the line to be insulated and the bare conductor to be coated.
Die Erfindung wird anhand eines in der Zeichnung dargestellten und nachfolgend beschriebenen Ausführungsbeispieles im einzelnen erläutert. In der Zeichnung zeigt: Fig. l eine schematische Darstellung des Fertigungsablaufes und Fig. 2 in vergrößerter Darstellung Einzelheiten des Nippel- Düsen-Systems der Auftragsvorrichtung.The invention is explained in detail using an exemplary embodiment shown in the drawing and described below. The drawing shows: Fig. L is a schematic representation of the manufacturing process and Fig. 2 in an enlarged view details of the nipple nozzle system of the application device.
Fig. 1 zeigt das Fertigungsschema für das neue Verfahren. Der von einer nicht dargestellten Ablaufvorrichtung ablaufende Leiter 10, der aus einem einzelnen Draht oder auch aus Litzen bestehen und etwa einen Durchmesser von 0,2 bis 0,04 mm umfassen kann, passiert zunächst eine Reinigungsvorrichtung 12 und wird dann durch die Aufbringvorrichtung 13 geführt, die im wesentlichen aus einem Nippel-Düsen-System (Fig. 2) und einer weitgehend pulsationsfrei arbeitenden Fördervorrichtung 14 besteht.Fig. 1 shows the manufacturing scheme for the new method. The conductor 10 running from a drain device, not shown, which consists of a single wire or also of strands and can have a diameter of approximately 0.2 to 0.04 mm, first passes through a cleaning device 12 and is then passed through the application device 13, which essentially consists of a nipple nozzle system (FIG. 2) and a largely pulsation-free conveyor device 14.
Die dabei durch Beschichten mit einer dünnen Kunststoffschicht (Schichtdicke etwa 20 bis 150 μm) entstandene Leitung 11 wird unmittelbar im Anschluß an den Beschichtungsvorgang durch eine Bestrahlungsanlage 15 geführt, der ein Reflektorsystem 16 zugeordnet ist, so daß die damit bewirkte diffuse Strahlung eine Rundumhärtung der Leitung 11 zur Folge hat. DerThe resulting line 11 by coating with a thin plastic layer (layer thickness about 20 to 150 microns) is passed immediately after the coating process through an irradiation system 15, which is associated with a reflector system 16, so that the diffuse radiation thus caused an all-round hardening of the line 11 results. The
Bestrahlungsanlage 15 ist eine Durchmesserkontrolleinrichtung 17 nachgeschaltet, bevor die Leitung einer nicht dargestellten Aufwickelvorrichtung zugeführt wird. Der Pfeil 18 kennzeichnet die Arbeitsrichtung der ganzen Anlage.Irradiation system 15 is followed by a diameter control device 17 before the line is fed to a winding device, not shown. The arrow 18 indicates the working direction of the entire system.
Das in Einzelheiten in Fig. 2 dargestellte Nippel-Düsen-System 20 der Auf ringvorrichtung 13 besteht im wesentlichen aus einem Nippel 21, dessen Außendurchmesser mit D., bezeichnet ist, und aus einer Düse 22, deren lichter Durchmesser mit Dn gekenn- zeichnet ist. Nippel und Düsen bilden gemeinsam einen RingspaltThe nipple-nozzle system 20 shown in detail in FIG. 2 of the ring device 13 essentially consists of a nipple 21, the outer diameter of which is denoted by D., and of a nozzle 22, the inside diameter of which is denoted by D n is. The nipple and nozzle together form an annular gap
23, dessen Dimension für die Schichtdicke der aufzubringenden Isolierschicht 25 mitbestimmend ist.23, the dimension of which is also decisive for the layer thickness of the insulating layer 25 to be applied.
Abhängig von der Abzugsgeschwindigkeit des Leiters 10 bildet der aus dem Ringspalt 23 austretende Kunststoff einen ZiehkegelDepending on the withdrawal speed of the conductor 10, the plastic emerging from the annular gap 23 forms a drawing cone
24, der sich dicht hinter dem Austrittspunkt an den Leiter 10 1 anschmiegt und so die fertige Leitung 11 bildet.24, which is located just behind the exit point on the conductor 10 1 hugs and forms the finished line 11.
Die Durchmesser des Leiters und der Leitung sind mit d- und d^ bezeichnet. Die geometrischen Verhältnisse des Nippel-Düsen- 5 Systems sind dann optimal, wenn die GleichungThe diameter of the conductor and the line are denoted by d- and d ^. The geometric relationships of the nipple-nozzle system are optimal if the equation
DN " d0r annähernd erfüllt ist. D N "d 0r is approximately fulfilled.
10 2 Figuren 3 Ansprüche10 2 figures 3 claims
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Claims

Patentansprüche Claims
1. Verfahren zur Herstellung der Isolierung einer elektrischen und/oder optischen Leitung, d a d u r c h g e k e n n z e i c h n e t , daß die Isolierschicht (25) in Form eines flüssigen, lösungsmittelfreien Kunststoffes mit Hilfe eines Nippel-Düsen-Systems (20) auf den Leiter (10) aufgebracht und anschließend durch Bestrahlung gehärtet wird.1. A method for producing the insulation of an electrical and / or optical line, characterized in that the insulating layer (25) in the form of a liquid, solvent-free plastic with the aid of a nipple nozzle system (20) applied to the conductor (10) and then is cured by radiation.
2. Vorrichtung zur Durchführung des Verfahrens nach Anspruch 1, d a d u r c h g e k e n n z e i c h n e t , daß das zum Aufbringen des flüssigen Kunststoffes dienende Nippel- Düsen-System (20) mit einer weitgehend pulsationsfreien Fördervorrichtung (14) beaufschlagt ist.2. Device for carrying out the method according to claim 1, d a d u r c h g e k e n n e e c h n e t that the nipple nozzle system (20) serving to apply the liquid plastic is acted upon with a largely pulsation-free conveying device (14).
3. Vorrichtung nach Anspruch 2, d a d u r c h g e k e n n ¬ z e i c h n e t , daß das Verhältnis des lichten Düsen- (Dn) zum Nippelaußendurchmesser (DN) etwa gleich dem Verhältnis der Durchmesser des isolierten Leiters (d, ) und des blanken Leiter (dDr) ist. 3. Apparatus according to claim 2, characterized in that the ratio of the clear nozzle (D n ) to the nipple outer diameter (D N ) is approximately equal to the ratio of the diameter of the insulated conductor (d,) and the bare conductor (d Dr ) .
PCT/DE1988/000741 1987-12-23 1988-11-28 Process and device for producing the insulating layer of a conductor WO1989006041A1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3744465A DE3744465C1 (en) 1987-12-23 1987-12-23 Device and method for producing the insulation layer of a line
DEP3744465.4 1987-12-23

Publications (1)

Publication Number Publication Date
WO1989006041A1 true WO1989006041A1 (en) 1989-06-29

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Application Number Title Priority Date Filing Date
PCT/DE1988/000741 WO1989006041A1 (en) 1987-12-23 1988-11-28 Process and device for producing the insulating layer of a conductor

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WO (1) WO1989006041A1 (en)

Cited By (2)

* Cited by examiner, † Cited by third party
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WO1997025725A2 (en) * 1996-01-04 1997-07-17 General Cable Industries, Inc. Paired electrical cable having improved transmission properties and method for making same
CN101937741A (en) * 2010-09-03 2011-01-05 河南省电力公司周口供电公司 Anti-shaking plastic extruder

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CA2085991A1 (en) * 1991-04-19 1992-10-20 Bruno Buluschek Process and apparatus for the continuous production of a flat cable, especially of a fiber-optic cable
DE19801699A1 (en) * 1998-01-17 1999-07-22 Cit Alcatel Coating equipment, in particular for optical glass fiber,
DE19801700A1 (en) * 1998-01-17 1999-07-22 Cit Alcatel Fiber coating equipment, especially for optical glass fiber
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WO1997025725A2 (en) * 1996-01-04 1997-07-17 General Cable Industries, Inc. Paired electrical cable having improved transmission properties and method for making same
WO1997025725A3 (en) * 1996-01-04 1997-10-30 Gen Cable Ind Inc Paired electrical cable having improved transmission properties and method for making same
CN101937741A (en) * 2010-09-03 2011-01-05 河南省电力公司周口供电公司 Anti-shaking plastic extruder

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