EP3830846B1 - Verfahren zum aufbringen von hydrophilen beschichtungen - Google Patents

Verfahren zum aufbringen von hydrophilen beschichtungen Download PDF

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Publication number
EP3830846B1
EP3830846B1 EP19752149.5A EP19752149A EP3830846B1 EP 3830846 B1 EP3830846 B1 EP 3830846B1 EP 19752149 A EP19752149 A EP 19752149A EP 3830846 B1 EP3830846 B1 EP 3830846B1
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EP
European Patent Office
Prior art keywords
wire
coating
vessel
water
previous
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Active
Application number
EP19752149.5A
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English (en)
French (fr)
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EP3830846A1 (de
Inventor
Helge Pfeiffer
Martine Wevers
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.)
Katholieke Universiteit Leuven
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Katholieke Universiteit Leuven
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    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
    • H01B19/00—Apparatus or processes specially adapted for manufacturing insulators or insulating bodies
    • H01B19/04—Treating the surfaces, e.g. applying coatings
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
    • H01B19/00—Apparatus or processes specially adapted for manufacturing insulators or insulating bodies
    • H01B19/02—Drying; Impregnating

Definitions

  • the present invention relates generally to a system that applies hydrophilic coatings on wires in a quasi-continuous process. This allowing high-throughput manufacturing of respective devices. More specifically the invention concerns a system that applies hydrophilic coatings on sensing wires. Such a system is able to apply the specific coating in a continuous process or quasi-continuous process allowing high-throughput manufacturing of respective devices. This system is used to manufacture sensing wires that are applied for monitoring of potentially defect structures suffering from e.g. adverse moisture ingress.
  • the present invention solves the problems of the related art by using a system whereby the wire is drawn through a vessel filled with the raw, aqueous coating material and which is dried afterwards by a hot airstream that is conducted by a dedicated pipe.
  • the present invention provides a method of coating a wire with an outer insulation coating and an inner conductive coating between said wire and outer insulation coating, characterised in that the to be coated wire comprises an outer material made of hydrophilic textile and further characterized in that this wire is passed through a first coating vessel comprising an aqueous medium comprising a water-solution of a conductive coating material, followed by a respective drying unit, thereafter through a second coating vessel comprising an solution of a non-conductive polymer coating material and finally again through a drying unit.
  • a method of coating a wire comprising an outer material made of hydrophilic textile, characterised in that 1) the to be coated wire is released over a bobbin into a first vessel comprising an aqueous medium comprising a water-solution of a conductive polymer coating material and further comprising a non-conductive material, 2) through an aperture at the bottom of said vessel, said outlet aperture having a diameter size value that is the value of the thickness of the wire and the thickness new coating, through 3) a first wire guide drying channel into 4) a second vessel comprising an aqueous medium comprising a water-soluble non-conductive material, 5) through an aperture at the bottom of said vessel, said outlet aperture having a diameter size value that is the value of the thickness of the wire and the thickness new second coating and 6) through a second wire guide drying channel onto a receiving bobbin.
  • This techniques described above may be embodied as the receiving bobbin having a motorized computer steered function.
  • Some of the techniques described above may be embodied as a method whereby the wire is passed through a first coating vessel comprising an aqueous medium comprising a water-soluble synthetic polymer coating material and further comprising a titanium carbon nitride (TiCN) or titanium aluminium nitride (TiAIN or AITiN), thereafter through a drying unit, thereafter through a second coating vessel comprising an aqueous medium comprising a water-soluble synthetic polymer coating material and finally through a drying unit or some of the techniques described above may be embodied as a method, whereby the wire is passed through a first coating vessel comprising an aqueous medium comprising a water-soluble synthetic polymer coating material and further comprising graphite, for instance graphite particles, thereafter through a drying unit, thereafter through a second coating vessel comprising an aqueous medium comprising a water-soluble synthetic polymer coating material and finally through a drying unit.
  • a first coating vessel comprising an aqueous medium comprising a water-soluble synthetic
  • the wire is passed through a first coating vessel comprising an aqueous medium comprising a water-soluble synthetic polymer coating material and a titanium carbon nitride, thereafter through a drying unit, thereafter through a second coating vessel comprising an aqueous medium comprising a water-soluble synthetic polymer coating material and finally through a drying unit.
  • the wire is passed through a first coating vessel comprising an aqueous medium comprising a water-soluble synthetic polymer coating material and further comprising titanium carbon nitride (TiCN) or titanium aluminium nitride (TiAIN or AITiN) or graphite or a combination thereof, thereafter through a drying unit, thereafter through a second coating vessel comprising an aqueous medium comprising a water-soluble synthetic polymer coating material and finally through a drying unit.
  • a first coating vessel comprising an aqueous medium comprising a water-soluble synthetic polymer coating material and further comprising titanium carbon nitride (TiCN) or titanium aluminium nitride (TiAIN or AITiN) or graphite or a combination thereof
  • the method of present invention provides that the wire leaves the vessel at a lower outlet having a diameter which is only a few larger than the diameter of the wire, a layer being 1 to 5 mm.
  • the method of present invention provides that the vessel is filled with an aqueous coating material.
  • the method of present invention provides that the vessel is filled with an aqueous medium comprising a water-soluble synthetic polymer coating material.
  • the method of present invention provides that the wire after the coating vessel passes through a drying unit.
  • the coating vessel the wire can pass through a drying unit which comprises a wire guidance channel or a drying pipe.
  • the wire after leaving the vessel can be transported through a pipe where a hot airstream for instance through an air drier.
  • the method of present invention provides that the velocity of the wire transport is computer-steered and wire passes a wire guidance channel or a drying pipe with a length that is adapted so that the coating can sufficiently dry on its way through the pipe or guidance.
  • the method of present invention provides that the wire is passed through a first coating vessel leaving the first vessel through its outlet aperture, thereafter through a drying unit, thereafter through a second coating vessel leaving the second vessel through its outlet aperture and finally through a drying unit.
  • the method of present invention provides that the wire already covered with the dried functional coating is again transported through a second vessel with another aqueous coating material wire leaves the new vessel again at a lower outlet of the second vessel.
  • the method of present invention provides that the water-soluble synthetic polymer coating material is the water-soluble synthetic polymer polyvinylalcohol (also known as PVOH, PVA, or PVAL).
  • the water-soluble synthetic polymer polyvinylalcohol also known as PVOH, PVA, or PVAL.
  • the method of present invention provides that the polyvinylalcohol is crosslinked for enhancing water-resistance of the coating material.
  • the method of present invention provides that no pressure extrusion is used and the application is at room temperature.
  • the method according to the present invention further comprises that the coated wire is winded-up at another for instance on a motorized bobbin.
  • Present invention involves an method for applying hydrophilic coatings comprising a bobbin which continuously releases the raw wire that is via a computer-steered motor transported through a vessel containing the raw, aqueous coating material. In this way, the wire is completely surrounded by the coating material.
  • the wire leaves the vessel at a lower outlet having a diameter which is only a few larger than the diameter of the wire.
  • This can furthermore comprise that the wire after leaving the vessel is freely transported through a pipe where a hot airstream is present created by a dedicated air drier.
  • the velocity of the computer-steered wire transport and the length of the drying pipe is optimised that the coating can sufficiently dry on its way through the pipe.
  • the wire already covered with the dried functional coating is again transported through a second vessel with another aqueous coating material, e.g. a new, protective coating. Also here, the wire is completely surrounded by the new coating material.
  • the wire leaves the new vessel again at a lower outlet having a diameter which is only a few larger than the diameter of the coated wire.
  • Another particular aspect of the invention is that the wire after leaving the vessel is freely transported through a pipe where a hot airstream is present created by a dedicated air drier.
  • the velocity of the computer-steered wire transport and the length of the drying pipe is optimised that the coating can sufficiently dry on its way through the pipe.
  • raw wire comprises an outer material made of hydrophilic textile enabling appropriate coating of the wire regarding its wetting properties and a homogenous distribution of the coating around on the wire surface.
  • coated wire is winded-up at another, e.g. motorized bobbin.
  • FIG. 1 is a graphic that shows the set-up of the mechanism where the coating with a sensitive material, such as Titanium Carbon Nitride (TiCN) and a water-soluble synthetic polymer such as Poly(vinyl alcohol) (PVOH, PVA, or PVAI).
  • the graphic displays a deflection sheave 1, the first vessel 2 for coating material, the first pipe or channel with drying facility 3, the second vessel for coating material 4, the second pipe or channel with drying facility 5, the computer steered motorized bobbin for receiving the double coated wire 6 and the bobbin for receiving the raw or the to be coated wire 7.
  • the values 400, 15, 100 and 40 are optional distances in cm.

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  • Treatments For Attaching Organic Compounds To Fibrous Goods (AREA)
  • Application Of Or Painting With Fluid Materials (AREA)

Claims (14)

  1. Verfahren zum Beschichten eines Drahtes mit einer äußeren Isolierungsbeschichtung und einer inneren leitfähigen Beschichtung zwischen dem Draht und der äußeren Isolierungsbeschichtung, dadurch gekennzeichnet, dass der zu beschichtende Draht ein Außenmaterial aus hydrophilem Textil umfasst und ferner dadurch gekennzeichnet, dass dieser Draht durch einen ersten Beschichtungsbehälter, der ein wässriges Medium umfasst, das eine wässrige Lösung eines leitfähigen Beschichtungsmaterials umfasst, gefolgt von einer entsprechenden Trocknungseinheit, danach durch einen zweiten Beschichtungsbehälter, der eine Lösung eines nichtleitenden polymeren Beschichtungsmaterials umfasst, und schließlich wieder durch eine Trocknungseinheit geführt wird.
  2. Verfahren zum Beschichten eines Drahts, der ein Außenmaterial aus hydrophilem Textil umfasst, dadurch gekennzeichnet, 1) dass der zu beschichtende Draht über eine Spule in ein erstes Gefäß freigegeben wird, das ein wässriges Medium umfasst, das eine Wasserlösung eines leitfähigen Polymerbeschichtungsmaterials umfasst und ferner ein nichtleitendes Material umfasst, 2) durch eine Öffnung auf der Unterseite des Gefäßes, wobei die Auslassöffnung einen Wert für die Größe des Durchmessers aufweist, welcher der Wert der Dicke des Drahts und der Dicke der neuen Beschichtung ist, durch 3) einen ersten Drahtführungstrocknungskanal in 4) ein zweites Gefäß, das ein wasserlösliches, nichtleitendes Material umfassendes wässriges Medium aufweist, 5) durch eine Öffnung an der Unterseite des Gefäßes, wobei die Auslassöffnung einen Wert für die Größe des Durchmessers aufweist, der dem Wert der Dicke des Drahtes und der Dicke der neuen zweiten Beschichtung entspricht, und 6) durch einen zweiten Drahtführungstrocknungskanal auf eine empfangende Spule.
  3. Verfahren nach einem der vorhergehenden Patentansprüche 1 bis 2, wobei der Draht durch einen ersten Beschichtungsbehälter, der ein wässriges Medium umfasst, das ein wasserlösliches synthetisches Polymerbeschichtungsmaterial umfasst und ferner Titankohlenstoffnitrid (TiCN) oder Titanaluminiumnitrid (TiAlN oder AlTiN) oder ferner Graphit umfasst, danach durch eine Trocknungseinheit, danach durch einen zweiten Beschichtungsbehälter, der ein wässriges Medium umfasst, das ein wasserlösliches synthetisches Polymerbeschichtungsmaterial umfasst, und schließlich durch eine Trocknungseinheit geführt wird.
  4. Verfahren nach einem der vorhergehenden Patentansprüche 1 bis 3, wobei der Draht durch einen ersten Beschichtungsbehälter, der ein wässriges Medium umfasst, das ein wasserlösliches synthetisches Polymerbeschichtungsmaterial und einem Titankohlenstoffnitrid umfasst, danach durch eine Trocknungseinheit, danach durch einen zweiten Beschichtungsbehälter, der ein wässriges Medium umfasst, das ein wasserlösliches synthetisches Polymerbeschichtungsmaterial umfasst, und schließlich durch eine Trocknungseinheit geführt wird.
  5. Verfahren nach einem der Patentansprüche 1 bis 4, wobei die Geschwindigkeit des Drahttransports rechnergesteuert ist und der Draht einen Drahtführungskanal oder ein Trocknungsrohr mit einer Länge passiert, die so angepasst ist, dass die Beschichtung auf ihrem Weg durch das Rohr oder die Führung ausreichend trocknen kann.
  6. Verfahren nach einem der vorhergehenden Patentansprüche 1 bis 5, wobei der Draht durch einen ersten Beschichtungsbehälter, der den ersten Behälter durch seine Auslassöffnung verlässt, danach durch eine Trocknungseinheit, danach durch einen zweiten Beschichtungsbehälter, der den zweiten Behälter durch seine Auslassöffnung verlässt, und schließlich durch eine Trocknungseinheit geführt wird.
  7. Verfahren nach einem der vorhergehenden Patentansprüche 1 bis 6, wobei der bereits mit der getrockneten Funktionsschicht überzogene Draht erneut durch ein zweites Gefäß mit einem anderen wässrigen Beschichtungsmaterial transportiert wird, wobei der Draht das neue Gefäß an einem unteren Auslass des zweiten Gefäßes wieder verlässt.
  8. Verfahren nach einem der vorhergehenden Patentansprüche 1 bis 7, wobei das wasserlöslichen synthetischen Polymer-Beschichtungsmaterial der wasserlösliches synthetische Polymer Polyvinylalkohol (auch bekannt als PVOH, PVA oder PVAL) ist.
  9. Verfahren nach Patentanspruch 8, wobei der Polyvinylalkohol zur Verbesserung der Wasserbeständigkeit des Beschichtungsmaterials vernetzt wird.
  10. Verfahren nach einem der vorhergehenden Patentansprüche zur Herstellung von Textildraht, der an seiner länglichen Oberfläche vollständig von dem Beschichtungsmaterial umgeben ist.
  11. Verfahren nach einem vorhergehenden Patentansprüche 1 bis 10, wobei keine Druckextrusion verwendet wird und die Anwendung bei Raumtemperatur erfolgt.
  12. Verfahren nach einem der vorhergehenden Patentansprüche 1 bis 11, um beschichtete Drähte in einem Hochdurchsatz-Herstellungsverfahren herzustellen.
  13. Verfahren nach einem der vorhergehenden Patentansprüche 1 bis 11, um beschichtete Drähte mit einer hydrophilen Beschichtung in einem Hochdurchsatz-Herstellungsverfahren herzustellen.
  14. Verwendung des Verfahrens nach einem der vorhergehenden Patentansprüche, um einen drahtförmigen Sensor herzustellen.
EP19752149.5A 2018-08-02 2019-08-02 Verfahren zum aufbringen von hydrophilen beschichtungen Active EP3830846B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GBGB1812602.9A GB201812602D0 (en) 2018-08-02 2018-08-02 Extruder for applying hydrophilic coatings
PCT/EP2019/070914 WO2020025804A1 (en) 2018-08-02 2019-08-02 Method of applying hydrophilic coatings

Publications (2)

Publication Number Publication Date
EP3830846A1 EP3830846A1 (de) 2021-06-09
EP3830846B1 true EP3830846B1 (de) 2022-04-20

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EP19752149.5A Active EP3830846B1 (de) 2018-08-02 2019-08-02 Verfahren zum aufbringen von hydrophilen beschichtungen

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EP (1) EP3830846B1 (de)
GB (1) GB201812602D0 (de)
WO (1) WO2020025804A1 (de)

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* Cited by examiner, † Cited by third party
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CN114029189B (zh) * 2022-01-10 2022-03-18 江苏骏源新材料有限公司 用于绝缘材料加工的表面处理设备

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* Cited by examiner, † Cited by third party
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US2211584A (en) * 1937-10-09 1940-08-13 Ruben Samuel Coaxial electrical conductor
US20050109522A1 (en) * 2003-11-25 2005-05-26 Midcon Cables Co., L.L.C., Joplin, Mo Conductive TEFLON film tape for EMI/RFI shielding and method of manufacture
US8182880B2 (en) * 2009-01-28 2012-05-22 Honeywell International Inc. Methods of manufacturing flexible insulated wires

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EP3830846A1 (de) 2021-06-09
WO2020025804A1 (en) 2020-02-06
GB201812602D0 (en) 2018-09-19

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