EP1715962A2 - Dispositif et procede de revetement de peinture multicouche sur une matiere de fil - Google Patents

Dispositif et procede de revetement de peinture multicouche sur une matiere de fil

Info

Publication number
EP1715962A2
EP1715962A2 EP05715358A EP05715358A EP1715962A2 EP 1715962 A2 EP1715962 A2 EP 1715962A2 EP 05715358 A EP05715358 A EP 05715358A EP 05715358 A EP05715358 A EP 05715358A EP 1715962 A2 EP1715962 A2 EP 1715962A2
Authority
EP
European Patent Office
Prior art keywords
thread material
arrangement according
radiation
arrangement
reflector
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.)
Withdrawn
Application number
EP05715358A
Other languages
German (de)
English (en)
Inventor
Joachim Jung
Oliver Starzmann
Günter STEVENS
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.)
SICME ITALIA IMPINATI SRL
IST Metz GmbH
Original Assignee
IST Metz 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
Application filed by IST Metz GmbH filed Critical IST Metz GmbH
Publication of EP1715962A2 publication Critical patent/EP1715962A2/fr
Withdrawn legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05D—PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05D7/00—Processes, other than flocking, specially adapted for applying liquids or other fluent materials to particular surfaces or for applying particular liquids or other fluent materials
    • B05D7/50—Multilayers
    • B05D7/52—Two layers
    • B05D7/53—Base coat plus clear coat type
    • B05D7/536—Base coat plus clear coat type each layer being cured, at least partially, separately
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05D—PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05D7/00—Processes, other than flocking, specially adapted for applying liquids or other fluent materials to particular surfaces or for applying particular liquids or other fluent materials
    • B05D7/20—Processes, other than flocking, specially adapted for applying liquids or other fluent materials to particular surfaces or for applying particular liquids or other fluent materials to wires
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05D—PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05D7/00—Processes, other than flocking, specially adapted for applying liquids or other fluent materials to particular surfaces or for applying particular liquids or other fluent materials
    • B05D7/50—Multilayers
    • B05D7/52—Two layers
    • B05D7/54—No clear coat specified
    • B05D7/546—No clear coat specified each layer being cured, at least partially, separately
    • C—CHEMISTRY; METALLURGY
    • C03—GLASS; MINERAL OR SLAG WOOL
    • C03C—CHEMICAL COMPOSITION OF GLASSES, GLAZES OR VITREOUS ENAMELS; SURFACE TREATMENT OF GLASS; SURFACE TREATMENT OF FIBRES OR FILAMENTS MADE FROM GLASS, MINERALS OR SLAGS; JOINING GLASS TO GLASS OR OTHER MATERIALS
    • C03C25/00—Surface treatment of fibres or filaments made from glass, minerals or slags
    • C03C25/10—Coating
    • C03C25/104—Coating to obtain optical fibres
    • C03C25/1065—Multiple coatings
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05D—PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05D3/00—Pretreatment of surfaces to which liquids or other fluent materials are to be applied; After-treatment of applied coatings, e.g. intermediate treating of an applied coating preparatory to subsequent applications of liquids or other fluent materials
    • B05D3/02—Pretreatment of surfaces to which liquids or other fluent materials are to be applied; After-treatment of applied coatings, e.g. intermediate treating of an applied coating preparatory to subsequent applications of liquids or other fluent materials by baking
    • B05D3/0254—After-treatment
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05D—PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05D3/00—Pretreatment of surfaces to which liquids or other fluent materials are to be applied; After-treatment of applied coatings, e.g. intermediate treating of an applied coating preparatory to subsequent applications of liquids or other fluent materials
    • B05D3/06—Pretreatment of surfaces to which liquids or other fluent materials are to be applied; After-treatment of applied coatings, e.g. intermediate treating of an applied coating preparatory to subsequent applications of liquids or other fluent materials by exposure to radiation
    • B05D3/061—Pretreatment of surfaces to which liquids or other fluent materials are to be applied; After-treatment of applied coatings, e.g. intermediate treating of an applied coating preparatory to subsequent applications of liquids or other fluent materials by exposure to radiation using U.V.
    • B05D3/065—After-treatment
    • B05D3/067—Curing or cross-linking the coating

Definitions

  • the invention relates to an arrangement for multilayer coating of thread material such as conductor wires or optical fibers with a transport path for the continuous continuous transport of the thread material and a heat curing station which is arranged in the transport path and is heatable by means of a heating device for heat curing a solvent-containing lacquer layer applied to the thread material.
  • the invention further relates to a corresponding method.
  • enamelled wires based on solvent-borne coating materials are provided with various layers of lacquer, for example a primer to increase the resistance to aging and better adhesion of the subsequent coating, a main layer for insulation and an outer layer as a bond coat or baking lacquer.
  • lacquer for example a primer to increase the resistance to aging and better adhesion of the subsequent coating, a main layer for insulation and an outer layer as a bond coat or baking lacquer.
  • UV radiation crosslinking of solvent-free coating systems in which the applied coating amount also corresponds to the crosslinked mass, has already been proposed.
  • UV radiation has so far not been put to industrial use in competition with conventional heat drying. Proceeding from this, the invention is based on the object of avoiding the disadvantages which have arisen in the prior art and of making production as flexible as possible.
  • a UV curing station is provided upstream and / or downstream of the heat curing station along the transport route and equipped with at least one UV radiation source for UV radiation curing of a solvent-free lacquer layer applied to the thread material.
  • additional coatings can be created in a continuous production process with easy-to-supply UV devices, which are optimally matched to the required properties.
  • existing systems can be retrofitted or supplemented economically with a small space requirement, so that different types of lacquer layers can be applied, at least one heat-drying layer being combined with a UV-crosslinked layer.
  • UV radiation sources are arranged concentrically around the thread material passing through, preferably distributed at the same angular distance from one another.
  • a further improvement is achieved in that several UV radiation sources are arranged at a distance from one another along the transport route. It is particularly expedient if three UV lamps arranged at a distance from one another along the transport route Radiation sources are distributed around the thread material passing through at an angular distance of 120 ° to one another.
  • the UV radiation sources which are preferably rod-shaped as mercury vapor lamps, should be oriented parallel to the thread material.
  • a further advantageous embodiment provides that the rod-shaped UV radiation sources are each aligned with the thread material via a reflector arrangement which is elliptical in cross section, the UV radiation source being in one focal line and the thread material in the other focal line of the reflector arrangement.
  • the reflector arrangement can be divided lengthways in a parting plane running between the focal lines. This can be achieved in that the reflector arrangement has two reflector segments, which are preferably connected via a hinge, one reflector segment enclosing the line of passage of the thread material and the other reflector segment that can be removed or folded away from the UV radiation source.
  • UV radiation sources are arranged in assigned treatment chambers, and in that the treatment chambers are arranged such that they can be pivoted about the passage line of the thread material by means of a respective swivel unit.
  • the UV curing station is advantageously preceded by a varnish application device for continuous coating of the thread material with the solvent-free varnish.
  • the UV curing station can be installed on a support frame so that it can be moved.
  • the thread material is guided in a flow channel, in particular quartz tube, which is transparent to UV radiation.
  • a further improvement provides that the flow channel runs continuously along several UV radiation sources arranged one behind the other in the direction of flow.
  • the flow channel consists of two pipe half-shells that can be separated from each other. Maintenance is also facilitated in that the flow channel is formed by a plurality of individual tubes which are each assigned to a UV radiation source and are connected to one another via intermediate pieces.
  • a further advantageous embodiment provides that the flow channel has an inlet for supplying process gas (in particular also air) at its inlet end section for the thread material and an outlet for discharging the process gas flowing in the direction of flow of the thread material at its outlet end section.
  • process gas in particular also air
  • At least one cold trap preferably designed as a hollow profile to which coolant can be applied, and the cold trap as part of a reflector arrangement between UV are arranged in the peripheral irradiation area between the UV radiation source and the thread material -Radiation source and thread material is coated as a cold light mirror.
  • a further process improvement can be achieved in that the UV radiation sources are arranged in a gas-tight treatment chamber, and in that the treatment chamber can be acted upon via a gas circuit with process gas which is forcibly conveyed, preferably under excess pressure against the atmosphere.
  • An advantageous embodiment provides that a heat exchanger for cooling and / or a filter for cleaning and / or a fan for circulating the process gas is arranged in the gas circuit outside the treatment chamber.
  • the process gas carried in the gas circuit is preferably reduced to a residual content of 0.1 to 5% by volume in relation to the ambient air in the oxygen fraction.
  • the above-mentioned object is achieved in that, in combination with a thermosetting coating, the thread material is irradiated with UV light at a UV curing station for UV radiation curing of an applied solvent-free lacquer layer.
  • Figure 1 is a coating system for conductor wires with a heat and a UV curing station in a vertical section.
  • FIG. 2 shows a further embodiment of a UV curing station with three UV lamps in plan view
  • Fig. 3 is a vertical section on section line 3-3 of Fig. 2; and Fig. 4 is a block diagram of a UV curing station with a gas circuit.
  • the arrangement or coating system shown in the drawing essentially consists of a transport path 10 for the continuous continuous transport of a conductor wire 12 to be coated, a heat curing station 14 arranged therein and a radiation radiation station 16 arranged downstream with at least one UV radiation source 18.
  • the heat hardening station 14 has a continuous furnace 20 which can be heated by means of a heating device 22 in order to harden the solvent-containing lacquer layer on the conductor wire 12 applied by means of the lacquer application device 24 under the influence of heat.
  • a further lacquer layer applied on the wire material 12 by means of the application device 26 can be crosslinked or cured without solvent by means of UV radiation.
  • a rod-shaped UV radiation source 18 for example as a mercury vapor lamp, is aligned parallel to the continuous conductor wire 12. While the heat-curing station 14 is constructed in a stationary manner, the UV-curing station 16 can be installed on a support frame 28 in the region of the transport route 10 so that it can be moved.
  • each treatment chamber 30 is equipped with a rod-shaped UV lamp 18 aligned parallel to the conductor wire 12, the UV lamps 18 being distributed around the conductor wire 12 at an angular distance of 120 ° from one another.
  • the conductor wire 12 in the UV curing station 16 is continuously in a continuous channel 32 led.
  • This consists of three quartz glass tubes 34 each assigned to a UV lamp 18, which are connected to one another at the end face by means of intermediate pieces 36. It is also possible that the quartz glass tubes 34 or a continuous sewer tube consist of two tube half-shells that can be separated from one another for service purposes.
  • the flow channel 32 has an inlet 40 for supplying process gas.
  • an outlet 44 is provided on the outlet-side end section 42 of the flow channel 32 for discharging the process gas flowing in the direction of flow of the conductor wire 12.
  • the process gas for example N 2 or CO 2 , is carried at a lower flow rate compared to the wire throughput speed, so that the gas is carried along with the conductor wire 12 as laminar as possible.
  • the UV lamps 18 in the treatment chambers 30 are each aligned with the wire material via a reflector arrangement 46 with an elliptical cross section, the UV lamp 18 in one focal line and the conductor wire 12 in the other focal line of the reflector arrangement 46 formed from two reflector segments 48.
  • the reflector arrangement 46 or the treatment chamber 30 can be divided into a parting plane 50 running between the focal lines.
  • the chamber halves are expediently connected in a hinge-like manner via a joint 52.
  • the treatment chambers can be pivoted into a favorable position by means of a swivel unit 54 (FIG. 2) around the pass line of the conductor wire 12.
  • Cooling traps 56 can be provided in the peripheral or lateral radiation area between the UV radiator 18 and the conductor wire 12, which are formed by a hollow profile to which coolant can be applied and which, instead of the quartz glass tubes 34 shown in FIG. 2, keep the treatment room free of impurities.
  • the cooling temperature of the cold traps can be adjusted so that fission products generated in the radiation room are collected or deposited as effectively as possible.
  • the cold traps 56 are also provided with a cold light mirror coating as part of the reflector arrangement 46.
  • the treatment chambers can be supplied with a process gas via a gas circuit 58, the gas flow being guided in the direction of the arrows 60 transversely to the direction of wire passage.
  • the process gas is used to cool the treatment chamber 30 in circulation and, if appropriate, also to support the hardening process.
  • the gas that can be supplied via a pressure connection 62 is under excess pressure against the atmosphere and may have a reduced oxygen content. It is also conceivable to use the ozone generated by the UV radiation in air operation to decompose fission products.
  • a circulation unit is arranged in the gas circuit 58 outside the treatment chamber 30 and comprises a gas cooler 66 arranged downstream of the UV lamp, a downstream cleaning filter 68 and a blower 70 for forcibly conveying the process gas.
  • a copper wire 12 with a diameter of 0.3 mm was coated with a thermosetting polyesterimide wire enamel in a layer thickness of approximately 30 ⁇ m and additionally provided with a UV-hardenable enamel layer as a top coat.
  • the UV varnish used consisted of - 67.5% 3,4-epoxy-cyclohexylmethyl-3,4-epoxycyclohexane-carboxylate; 25.0% Desmophen 670® (a branched polyester polyol from Bayer AG); - 5.0% mixed acrylic sulfonium hexafluorophosphate salt as photoinitiator; - 2.5% of a leveling additive.
  • the homogeneously mixed UV lacquer was applied to the heat-hardened lacquer layer by means of a stripping nozzle and hardened with UV radiation at a throughput speed of 50 m / min. This resulted in a caking strength of> 1 N.

Landscapes

  • Life Sciences & Earth Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Wood Science & Technology (AREA)
  • Chemical & Material Sciences (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • General Chemical & Material Sciences (AREA)
  • Geochemistry & Mineralogy (AREA)
  • Materials Engineering (AREA)
  • Organic Chemistry (AREA)
  • Application Of Or Painting With Fluid Materials (AREA)
  • Coating Apparatus (AREA)

Abstract

La présente invention concerne un dispositif et un procédé de revêtement de peinture sur une matière de fil (12), au moyen d'une voie de transport (10) permettant le transport continu de la matière de fil (12). Pour le revêtement multiple, on utilise, en combinaison avec une station de thermodurcissement (14) qui peut être chauffée et est conçue pour assurer le thermodurcissement d'une couche de peinture contenant du solvant, une station de durcissement par UV (16) qui est placée avant et/ou après la station de thermodurcissement (14) et est conçue pour assurer le durcissement par UV d'une couche de peinture exempte de solvant qui est appliquée sur la matière de fil (12).
EP05715358A 2004-02-20 2005-02-17 Dispositif et procede de revetement de peinture multicouche sur une matiere de fil Withdrawn EP1715962A2 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102004008812A DE102004008812A1 (de) 2004-02-20 2004-02-20 Anordnung und Verfahren zur mehrschichtigen Lackbeschichtung von Fadenmaterial
PCT/EP2005/001583 WO2005082548A2 (fr) 2004-02-20 2005-02-17 Dispositif et procede de revetement de peinture multicouche sur une matiere de fil

Publications (1)

Publication Number Publication Date
EP1715962A2 true EP1715962A2 (fr) 2006-11-02

Family

ID=34832977

Family Applications (1)

Application Number Title Priority Date Filing Date
EP05715358A Withdrawn EP1715962A2 (fr) 2004-02-20 2005-02-17 Dispositif et procede de revetement de peinture multicouche sur une matiere de fil

Country Status (3)

Country Link
EP (1) EP1715962A2 (fr)
DE (1) DE102004008812A1 (fr)
WO (1) WO2005082548A2 (fr)

Families Citing this family (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102004056404B4 (de) 2004-11-23 2019-05-09 Dürr Systems Ag Trockner
DE202004021146U1 (de) 2004-12-22 2006-12-21 Dürr Systems GmbH Elektrotauchlackieranlage
DE102005053380B3 (de) * 2005-11-07 2006-11-30 Aumann Gmbh Vorrichtung zum Aufbringen eines Isolierlacks auf ein elektrisch leitfähiges Element
DE102006030334A1 (de) 2006-06-30 2008-01-03 Dürr Systems GmbH Trocknermodul für einen Trockner
DE102006055297A1 (de) 2006-11-23 2008-05-29 Dürr Systems GmbH Werkstückträger zum Fördern eines zu lackierenden Werkstücks
US8314408B2 (en) 2008-12-31 2012-11-20 Draka Comteq, B.V. UVLED apparatus for curing glass-fiber coatings
DK2388239T3 (da) * 2010-05-20 2017-04-24 Draka Comteq Bv Hærdningsapparat, der anvender vinklede UV-LED'er
US8871311B2 (en) 2010-06-03 2014-10-28 Draka Comteq, B.V. Curing method employing UV sources that emit differing ranges of UV radiation
DK2418183T3 (en) 2010-08-10 2018-11-12 Draka Comteq Bv Method of curing coated glass fibers which provides increased UVLED intensity
DE102011052520A1 (de) 2011-08-09 2013-02-14 Aumann Gmbh Vorrichtung zur Beschichtung von elektrisch leitenden Drähten

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Also Published As

Publication number Publication date
DE102004008812A1 (de) 2005-09-08
WO2005082548A3 (fr) 2005-12-01
WO2005082548A2 (fr) 2005-09-09

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