EP0030717B1 - Procédé de fabrication de fils d'enroulement par extrusion de matières thermoplastiques - Google Patents

Procédé de fabrication de fils d'enroulement par extrusion de matières thermoplastiques Download PDF

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Publication number
EP0030717B1
EP0030717B1 EP19800107816 EP80107816A EP0030717B1 EP 0030717 B1 EP0030717 B1 EP 0030717B1 EP 19800107816 EP19800107816 EP 19800107816 EP 80107816 A EP80107816 A EP 80107816A EP 0030717 B1 EP0030717 B1 EP 0030717B1
Authority
EP
European Patent Office
Prior art keywords
layer
wire
extrusion
winding wires
schicht
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
Application number
EP19800107816
Other languages
German (de)
English (en)
Other versions
EP0030717A1 (fr
Inventor
Harald Dr. Janssen
Eberhard Kertscher
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Beck Dr and Co GmbH
Original Assignee
Beck Dr and Co GmbH
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
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First worldwide family litigation filed litigation Critical https://patents.darts-ip.com/?family=25604278&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=EP0030717(B1) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Application filed by Beck Dr and Co GmbH filed Critical Beck Dr and Co GmbH
Priority to AT80107816T priority Critical patent/ATE7976T1/de
Publication of EP0030717A1 publication Critical patent/EP0030717A1/fr
Application granted granted Critical
Publication of EP0030717B1 publication Critical patent/EP0030717B1/fr
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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
    • H01B3/308—Wires with resins
    • 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
    • H01B13/141—Insulating conductors or cables by extrusion of two or more insulating layers

Definitions

  • the present invention relates to a method for producing winding wires with two insulating layers made of different materials, so-called two-layer enamelled wires.
  • Enamel-insulated winding wires are precisely characterized in the German standard DIN 46435 from April 1977, as shown in the table. They are used on a large scale in electrical engineering, transformer construction and electronics.
  • the conductor metal preferably copper or aluminum, is insulated with a thin, but mechanically and thermally extremely resistant synthetic resin lacquer layer.
  • Such enamelled wires are produced on wire enamelling machines by repeatedly applying an enamelled wire enamel to the metal wire.
  • wire enamel resin melts or dispersions and aqueous solutions of wire enamel resins are also used for wire enamelling.
  • thermoplastics for thick-walled sheathing of electrical conductor bundles and for the production of conductor wires has long been known from the cable industry.
  • - DE-B-2 638 763 describes a process for the production of enamel-insulated winding wires by extrusion of partially crystalline thermoplastic polycondensates with crystallite melting points above 170 ° C., preferably above 250 ° C.
  • a lacquer made of a further, preferably linear polymer - such as, for example, B. polyamide, polyvinyl acetate, polyester, polyamideimide - applied to the ladder by the same method.
  • a disadvantage of the process is the often low solubility of the linear polycondensates which are preferably used, so that these coatings have very low solids contents and require aggressive solvents which can adversely affect the basic insulation of the conductor during coating.
  • US-A-2 360 097 describes an extrusion process in which polyamide is extruded onto a wire in the form of a tube. Since the wire has a higher speed than the emerging plastic, the polyamide coating on the wire is stretched and shrunk. A second layer of polyamide can be applied to the wire coated in this way.
  • a method for the production of winding wires with two insulating layers made of different materials which is characterized in that on one by means of known wire enamels or wire enamel resins or on one by extrusion coating with partially crystalline NEN or amorphous thermoplastic polycondensates insulated electrical conductors, a second layer is applied by extrusion of a thermoplastic material such that the total layer thickness of both insulating layers meets the requirements of the German standard DIN 46435 (April 1977).
  • wire enamels or wire enamels are suitable for the basic insulation of the electrical conductor, which are used for the production of thermally stable winding wires of types M, W 155 and W 180 according to the German standard DIN 46416, parts 1, 4 and 5.
  • wire enamels or wire enamel resins based on terephthalic acid polyester, polyesterimide, polyamideimide and polyimide.
  • the wire enamels can be dissolved or dispersed in organic solvents or in water, or can be applied from the melt.
  • the partially crystalline thermoplastic polycondensates described in DE-B-2 638 763 such as, for. B. linear polyesters and polyamides and amorphous polyether sulfones or partially crystalline polyether ketones are suitable. These polycondensates can optionally be used in a mixture with dyes, pigments, fillers and other auxiliaries.
  • thermoplastic plastics are used for the second layer, the softening points of which are lower than that of the polycondensates of the first layer.
  • extrudable thermoplastic materials are suitable for the second insulation layer to be applied by extrusion in accordance with the invention, with the application of an adhesion promoter to the base layer or also interim heating of the insulated wire, if appropriate, to improve the adhesion between the two insulation layers.
  • an adhesion promoter to the base layer or also interim heating of the insulated wire, if appropriate, to improve the adhesion between the two insulation layers.
  • it is limited to those polymers that can be caked either by heating or by volatile solvents or that improve the mechanical properties of the already insulated enamelled wire - such as surface hardness, abrasion or elasticity.
  • Semi-crystalline or amorphous polyamides are particularly preferred. As partially crystalline polyamides such. B.
  • amorphous polyamides such.
  • Such polyamides are advantageous for the second layer, which already flow at moderately elevated temperatures and which firmly bake the windings or coils used, for example, in electrical engineering and consumer electronics, which makes the use of the usual impregnating lacquers or impregnating resins superfluous.
  • Polyvinyl acetates can also be used for the second layer.
  • polyvinyl butyrates are particularly preferred because of their swellability in volatile solvents, e.g. B. alcohols, which, as an alternative to the aforementioned thermal caking, allows the coils to solidify by the action of solvents.
  • Polyvinyl butyrates with degrees of butyralization of 70-80% and average molecular weights of 30,000-200,000 are particularly suitable for this area of application.
  • a decisive advantage of the process is that it is also possible to use polymers which are difficult or not at all soluble in conventional solvents.
  • Examples 1 and 2 soft-annealed round copper wire of 0.6 mm in diameter was used, which first passed through a preheating section and, after passing through the coating zone in the extruder head, through a stripping nozzle which regulates the layer thickness. After passing through a cooling section, the coated wire was wound up. The second layer was then applied.
  • the permissible minimum layer thickness for grade 1 (L) according to DIN 46435 is 0.026 fJ.m
  • the permissible maximum layer thickness for grade 2 (2 L) is 0.074 fJ.m.
  • the specified extruder temperatures relate to the distance from the inlet to the nozzle.
  • the last three temperature specifications apply to the nozzle system.
  • the adhesion was excellent when using ethanol or methanol.
  • a lubricant-free copper wire with a nominal diameter of 0.04 mm insulated with a polyesterimide-based wire enamel was used.
  • the total diameter of the insulated wire was 0.430 mm.
  • the diameter increase due to the basic insulation was therefore 30 ⁇ m.
  • the permissible minimum layer thickness for grade 1 (L) according to DIN 46435 is 0.024 ⁇ m
  • the permissible maximum layer thickness for grade 2 (2 L) is 0.062 ⁇ m.
  • Coating material for the second layer Transparent amorphous polyamide made from dimethyl terephthalate and trimethyl hexamethylene diamine (mixture of isomers from 2,2,4- and 2,4,4-trimethyl hexamethylene diamine).

Landscapes

  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Physics & Mathematics (AREA)
  • Spectroscopy & Molecular Physics (AREA)
  • Insulated Conductors (AREA)
  • Organic Insulating Materials (AREA)
  • Processes Specially Adapted For Manufacturing Cables (AREA)
  • Extrusion Moulding Of Plastics Or The Like (AREA)
  • Photoreceptors In Electrophotography (AREA)

Claims (4)

1. Procédé de fabrication de fils de bobinage munis de deux couches isolantes de matières différentes, caractérisé par le fait que sur un conducteur électrique isolé au moyen d'émaux connus pour fils ou de résines d'émail pour fil, ou isolé par revêtement par extrusion au moyen de produits de polycondensation thermoplastiques partiellement cristallin ou amorphes, on applique une deuxième couche par extrusion d'une matière synthétique thermoplastique de façon telle que l'épaisseur totale des deux couches isolantes réponde aux exigences de la norme allemande 46435 (Avril 1977).
2. Procédé selon la revendication 1, caractérisé par le fait que, comme matière pour la deuxième couche, on utilise des polyamides partiellement cristallins ou amorphes.
3. Procédé selon la revendication 1, caractérisé par le fait que, comme matière pour la deuxième couche, on utilise un polyvinylacétal.
4. Procédé selon la revendication 3, caractérisé par le fait que, comme polyvinylacétal, on utilise le polyvinylbutyral.
EP19800107816 1979-12-18 1980-12-11 Procédé de fabrication de fils d'enroulement par extrusion de matières thermoplastiques Expired EP0030717B1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT80107816T ATE7976T1 (de) 1980-12-11 1980-12-11 Verfahren zur herstellung von wickeldraehten durch extrusion von thermoplasten.

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
AT7988/79 1979-12-18
AT798879 1979-12-18
AT8106/79 1979-12-21
AT810679 1979-12-21

Publications (2)

Publication Number Publication Date
EP0030717A1 EP0030717A1 (fr) 1981-06-24
EP0030717B1 true EP0030717B1 (fr) 1984-06-13

Family

ID=25604278

Family Applications (1)

Application Number Title Priority Date Filing Date
EP19800107816 Expired EP0030717B1 (fr) 1979-12-18 1980-12-11 Procédé de fabrication de fils d'enroulement par extrusion de matières thermoplastiques

Country Status (10)

Country Link
EP (1) EP0030717B1 (fr)
AU (1) AU536356B2 (fr)
BR (1) BR8008215A (fr)
CA (1) CA1161616A (fr)
DE (2) DE3044059A1 (fr)
ES (1) ES497812A0 (fr)
FI (1) FI803942L (fr)
IN (1) IN155208B (fr)
PT (1) PT72197B (fr)
TR (1) TR21263A (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102021001741A1 (de) 2021-04-06 2022-10-06 Ulrich Clauss Kataphoretisches Tauchbeschichtungsverfahren für Bahnware
DE102021001740A1 (de) 2021-04-06 2022-10-06 Ulrich Clauss Beschichtungsverfahren für Mikroflachdrähte

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0334535A3 (fr) * 1988-03-23 1990-12-05 PIRELLI GENERAL plc Fabrication de câble électrique
DE19748529A1 (de) * 1997-11-03 1999-03-04 Siemens Ag Elektrische Maschine mit Wickeldrähten
DE102011052520A1 (de) 2011-08-09 2013-02-14 Aumann Gmbh Vorrichtung zur Beschichtung von elektrisch leitenden Drähten
DE102011052518A1 (de) 2011-08-09 2013-02-14 Elantas Gmbh Lösemittelfreie Drahtlackzusammensetzung
CN104170026B (zh) * 2012-11-30 2017-05-24 古河电气工业株式会社 绝缘电线和电气/电子设备
JP6325550B2 (ja) * 2013-09-06 2018-05-16 古河電気工業株式会社 平角電線およびその製造方法並びに電気機器
CN105518807B (zh) * 2013-09-06 2018-05-01 古河电气工业株式会社 扁平电线及其制造方法以及电气设备

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2360097A (en) * 1940-03-21 1944-10-10 Du Pont Apparatus for manufacture of coated products
CH602999A5 (fr) * 1973-09-13 1978-08-15 Schweizerische Isolawerke
CH612789A5 (fr) * 1976-07-01 1979-08-15 Maillefer Sa
DE2753917A1 (de) * 1977-12-03 1979-06-07 Beck & Co Ag Dr Verwendung von thermoplasten zur herstellung von isolierten wickeldraehten im extrusionsverfahren

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102021001741A1 (de) 2021-04-06 2022-10-06 Ulrich Clauss Kataphoretisches Tauchbeschichtungsverfahren für Bahnware
DE102021001740A1 (de) 2021-04-06 2022-10-06 Ulrich Clauss Beschichtungsverfahren für Mikroflachdrähte

Also Published As

Publication number Publication date
ES8201345A1 (es) 1981-12-01
CA1161616A (fr) 1984-02-07
PT72197B (de) 1981-10-28
AU6549780A (en) 1981-07-02
IN155208B (fr) 1985-01-12
EP0030717A1 (fr) 1981-06-24
FI803942L (fi) 1981-06-19
DE3068265D1 (en) 1984-07-19
DE3044059A1 (de) 1981-10-01
TR21263A (tr) 1984-03-15
BR8008215A (pt) 1981-07-07
AU536356B2 (en) 1984-05-03
PT72197A (de) 1981-01-01
ES497812A0 (es) 1981-12-01

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