EP1060029B1 - Procede pour appliquer une peinture a plusieurs couches comportant des agents de revetement durcissables au moyen d'un rayonnement - Google Patents

Procede pour appliquer une peinture a plusieurs couches comportant des agents de revetement durcissables au moyen d'un rayonnement Download PDF

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Publication number
EP1060029B1
EP1060029B1 EP99958117A EP99958117A EP1060029B1 EP 1060029 B1 EP1060029 B1 EP 1060029B1 EP 99958117 A EP99958117 A EP 99958117A EP 99958117 A EP99958117 A EP 99958117A EP 1060029 B1 EP1060029 B1 EP 1060029B1
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EP
European Patent Office
Prior art keywords
radiation
filter
irradiation
process according
coat
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
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EP99958117A
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German (de)
English (en)
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EP1060029A1 (fr
Inventor
Wolfgang Feyrer
Christine Kimpel
Helmut Löffler
Karin Maag
Jens Zeyen
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EIDP Inc
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EI Du Pont de Nemours and Co
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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
    • B05D7/532—Base coat plus clear coat type the two layers being cured or baked together, i.e. wet on wet
    • 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
    • B05D3/0209—Multistage baking
    • 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
    • B05D3/0263—After-treatment with IR heaters
    • 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 a method for multi-layer coating of substrates Use of radiation-curable coating agents.
  • the method can be advantageous They are used in vehicle and industrial painting, preferably in the Vehicle refinishing.
  • a subsequent IR radiation is advantageous, for example, if in Lacquer contains, in addition to the radiation-curable binders, other binders that are used network an additional mechanism. In such a case, the downstream curing the full curing can be achieved quickly.
  • a combination of UV and IR radiation during the curing process further on Senses can be realized, for example, by using a UV radiation source or IR radiation source and / or the object to be irradiated is continuously guided past one another be discontinuous or by UV radiation source and IR radiation source be placed alternately in front of the object to be irradiated.
  • a disadvantage of the The procedures described is that, on the one hand, at least in the continuous process two drying or hardening zones to be passed through (UV zone and IR zone) be and UV and IR zones separated from each other, for example, by glare protection must, and that on the other hand in the discontinuous mode of operation UV and IR radiation source depending on the number of desired radiation intervals the object to be irradiated must be exchanged mutually, the UV lamp is generally not operated during the IR drying phase.
  • last-mentioned discontinuous mode of operation as well as the required burn-in times Radiation sources, especially UV lamps generally have a time-delay effect on the entire painting process. Especially when using discontinuous Working method e.g. in paint shops, the vehicle throughput and thus ultimately affect the profitability of the workshop.
  • the object of the invention was therefore to provide a process for multi-layer coating To provide the use of at least partially radiation-curable coating compositions, which makes it easy, economical and time-saving to harden the radiation-curable coatings to combine UV radiation and IR radiation, to operate without an undesirably high equipment and thus costly effort have to.
  • the object is achieved by the method for forming an object of the invention Multi-layer painting by applying one or more fillers and / or others Coating agent layers on an optionally precoated substrate and then of a topcoat layer from a basecoat / clearcoat structure or from a pigmented Single-layer topcoat, at least one of the layers of the multi-layer structure consisting of one created at least partially curable coating agent by means of high-energy radiation is and this layer (s) are irradiated with UV radiation and IR radiation, the thereby is characterized in that a UV radiation source for irradiation with UV and IR radiation is used, which has an IR radiation component in its emission spectrum and that by alternately connecting a UV filter and an IR filter and / or alternating upstream and omitting a UV filter or an IR filter in front of the UV radiation source at least two radiation intervals are formed during which different with UV radiation, IR radiation or simultaneously with UV radiation and IR radiation is irradiated.
  • UV filter and IR filter use it is possible to alternate between UV filter and IR filter use. It is also possible to use either a UV filter or an IR filter work and omit this alternately, so that with UV and IR radiation simultaneously is irradiated. Both ways of working can be combined so that alternating irradiation intervals with UV radiation, IR radiation or together UV and IR radiation are formed.
  • UV radiation sources can be used as the UV radiation source are used, provided they have an IR radiation component in their emission spectrum exhibit.
  • Such UV radiation sources are known to the person skilled in the art and generally accessible.
  • the one required in the emission spectrum of the UV radiation source IR radiation component is preferably a radiation component in the range of short-wave IR radiation. This is the wavelength range of around 700 up to about 2500 nm. This range essentially corresponds to the emission spectra more commonly IR radiators which can be used in paint drying and which are in the range from 500 to 2500 nm, are preferably from 800 to 2000 nm.
  • UV radiation sources that can be used according to the invention thus have, for example, an emission spectrum, including UV and IR emissions, in the range from 180 to 2500 nm, preferably from 200 to 2500 nm, particularly preferably from 200 to 2000 nm.
  • the UV radiation sources customary in practice and known to the person skilled in the art have generally a UV radiation component in the emission spectrum of about 25%. Besides there is a considerable proportion of IR radiation in the emission spectrum.
  • the IR radiation component can be up to about 60%, for example.
  • UV radiation sources which can be used well in the process according to the invention are e.g. High-pressure, medium-pressure and low-pressure mercury lamps. Are common Lamps between 5 and 200 cm lamp length. Depending on the special Use case and the required radiation energy are lamp and Reflector geometry coordinated in the usual way.
  • the respective lamp power can vary between 20 and 250 W / cm (watts per cm lamp length). Lamps with powers between 80 and 120 W / cm are preferably used.
  • the mercury lamps can also be introduced by introducing metal halides be endowed. Examples of doped emitters are iron or gallium mercury lamps.
  • UV radiation sources are gas discharge tubes, e.g. Xenon low pressure lamps.
  • discontinuous UV radiation sources can also be used.
  • Prefers these are so-called high-energy flash devices (in short: UV flash lamps).
  • the UV flash lamps can have a plurality of flash tubes, for example with inert gas, such as xenon, filled quartz tubes.
  • the UV flash lamps have, for example Illuminance of at least 10 megalux, preferably from 10 to 80 megalux per Lightning discharge on.
  • the energy per flash discharge can be, for example, 1 to 10 kJoules be.
  • the UV radiation sources that can be used in the method according to the invention are characterized by Upstream of a UV or IR filter modified before the UV radiation source.
  • a UV filter is to be understood as a filter that has essentially no radiation in the Wavelength range of UV radiation, i.e. especially in the range of about 180 to 380 nm, lets through, but is transparent to IR radiation.
  • IR filter is a filter be understood that essentially no radiation in the wavelength range of IR radiation, in particular in the range of about 700 to 2500 nm, however is permeable to UV radiation.
  • the wavelength portion of visible light can vary completely or partially filtered out or let through after selecting the appropriate filter become.
  • conventional UV and / or IR filters can be modified the UV radiation source. They are known to the person skilled in the art and are commercially available available.
  • the filters can, for example, be foils, e.g. IR transmission foils, or are glass filters with different transmission curves.
  • the filters are in different sizes, shapes and different thicknesses available.
  • the glass filter types GG e.g. GG 474 from the company Schott are used. So-called IR transmission foils can also be used.
  • the glass filter types FG e.g. FG 3, or BG, e.g. BG 26, BG 3, from Schott.
  • the equipment of the UV radiation sources that can be used in the method according to the invention can be used with the respective filter in any way. That's the way it is possible, for example, the filter via suitable connecting elements or brackets to attach that it can be folded away, plugged on or pushed forward. It is also possible the filter in a separate device separate from the UV radiation source or Position the bracket directly in front of the UV radiation source.
  • the UV radiation sources are generally integrated in a UV system usually from the UV radiation sources, the reflector system, the power supply, electrical controls, shielding, cooling system and ozone extraction.
  • Other arrangements are of course also possible, just as it is possible to use only parts of the here to use the specified components of a UV system.
  • the process according to the invention for multi-layer painting can be carried out using the Modified UV radiation sources described above be carried out in different ways. Irradiation intervals with UV radiation, IR radiation or UV and IR radiation can be combined with one another as desired. there can both the number and order of the respective radiation intervals as well as the Irradiation time per irradiation interval and the total irradiation time can be varied.
  • the curing process with irradiation intervals and IR irradiation subsequent UV radiation are explained.
  • this is done using high-energy radiation applied at least partially curable coating compositions.
  • the Application takes place in the usual way, for example by means of spray application.
  • To the application includes after a possibly allowed flash-off phase Drying phase or heating phase with IR radiation.
  • the drying phase should do that Accelerate ventilation, that is, by the action of heat, the evaporation of the in the Coating of organic solvents still present and / or in the case of water-based paints of the water take place in a relatively short time.
  • the IR radiation also has an effect achieved heating of the substrate surface also has a positive effect on the curing process by means of UV radiation because, in the case of binder systems curable by means of UV radiation, a higher Crosslinking density can be achieved if the crosslinking is started in the heat.
  • the IR radiation is realized by, as already described above, the used UV radiation source upstream a UV filter and irradiated accordingly becomes. During this irradiation interval, the Substrate surface, but no crosslinking using UV radiation.
  • the radiation duration with IR radiation can be, for example, 1 to 20 minutes.
  • IR radiation can also be triggered by triggering several Lightning discharges occur.
  • the duration of the radiation depends, for example, on the type and quantity the solvent still present in the coating after application. In dependence of Irradiation time and power of the radiation source can be on the substrate surface Temperatures of, for example, 40 to 200 ° C can be reached.
  • Settings are made so that temperatures of, for example, from 40 to 100 ° C can be reached on the substrate surface. If the desired temperature of the Reached the substrate surface or the intended irradiation time has expired, the UV filter removed. After removing the UV filter starts in the case of continuously working UV sources instantly UV crosslinking. In case of UV flash lamps to be operated discontinuously become the after removing the UV filter desired UV flashes triggered.
  • the exposure time with UV radiation can be when using UV flash lamps as a UV radiation source for example in the range from 1 millisecond to 400 seconds from 4 to 160 seconds, depending on the number of flash discharges selected.
  • the lightning can be triggered approximately every 4 seconds, for example.
  • the hardening can for example by 1 to 40 successive lightning discharges.
  • the duration of the radiation can be for example in the range from a few seconds to about 5 minutes, preferably less than 5 Minutes.
  • the distance between the UV radiation sources and the substrate surface to be irradiated can for example 5 to 60 cm.
  • the shielding of the UV radiation sources Avoiding radiation leakage can e.g. by using an accordingly lined protective housing around a portable lamp unit or with the help of other, safety measures known to the person skilled in the art.
  • the coupling of an IR radiation phase with a subsequent UV radiation phase using the UV radiation sources that can be used in the method according to the invention with an upstream UV filter offers the advantage that the Burn-in phase of a continuous UV radiation source for predrying or Heating the substrate surface can be used.
  • UV radiation curable binders still contain binders in the coating agent, which after network or harden an additional mechanism, then there is the advantage that A certain degree of crosslinking already takes place due to the IR radiation, which for example leads to leads to improved stability.
  • the curing process with radiation intervals and UV radiation subsequent IR radiation are explained.
  • this is done using high-energy radiation applied at least partially curable coating compositions.
  • the Application can take place in the usual way, for example by means of spray application.
  • the irradiation phase with UV radiation follows.
  • the Carrying out the UV irradiation corresponds to that already mentioned above Versions.
  • the Irradiation phase with IR radiation is realized by how already described above, the UV radiation source used is a UV filter upstream and is irradiated accordingly.
  • the subsequent IR radiation phase can be, for example, 0.5 to 30 minutes. Otherwise the above already apply made statements regarding IR radiation.
  • the coupling of a UV radiation phase with a subsequent IR radiation phase can be particularly advantageous if, in addition to the radiation-curable binders are also included, which have a network additional mechanism and / or are physically drying. The final one In these cases, the IR drying phase quickly leads to complete hardening of the applied coating.
  • Irradiation intervals are of course any other combinations of UV, IR or UV and IR radiation possible. Further conceivable examples of combinations are: IR irradiation-UV irradiation-IR irradiation; UV irradiation-IR irradiation UV irradiation-IR irradiation. Furthermore, it is also possible to use different ones Irradiation intervals in connection with the execution of several spray coats or Operations or in connection with radiation curing several to apply successive layers of the multilayer structure.
  • the multilayer structure it is also possible, initially in the multilayer structure, at least partially to apply radiation-curable basecoat and first an IR and then one Subject to UV radiation. Thereafter, an at least partially radiation-curable Clear varnish applied and again first a JR and then UV radiation subjected. If necessary, further IR radiation can occur in both cases connect.
  • the radiation curing of the individual layers of the multilayer structure as well the layers applied by means of a plurality of spray passes can in each case be the same or different radiation intensity and different radiation duration for each layer individually or for two or more layers together.
  • one or more layers of a conventional one Multi-layer structure in the vehicle paint can be hardened. It can be For example, a multi-layer structure consisting of primer, filler, basecoat, clearcoat or act from primer, filler, one-coat topcoat. One or more can be used Layers of the multilayer structure made of at least partially radiation-curable Coating agents are created.
  • At least those used in the method according to the invention by means of high-energy radiation partially curable coating agents are not subject to any limitation, they can aqueous, diluted with solvents or free of solvents and water. It can be by means of high-energy radiation, preferably by means of UV radiation, completely or only act partially curable coating agents.
  • At by means of high-energy radiation curable coating compositions are in particular known to those skilled in the art cationic and / or free radical curing coating agents. Radicals are preferred curing coating compositions. When exposed to high-energy radiation Coating agents generate radicals in the coating agent that crosslink trigger radical polymerization of olefinic double bonds.
  • the radically curing coating compositions which can preferably be used contain conventional ones Prepolymers, such as poly- or oligomers, the free-radically polymerizable olefinic Have double bonds, especially in the form of (meth) acryloyl groups in the molecule.
  • the prepolymers can be used in combination with conventional reactive diluents, i.e. reactive liquid monomers.
  • prepolymers or oligomers are (meth) acrylic functional (Meth) acrylic copolymers, epoxy resin (meth) acrylates, polyester (meth) acrylates, Polyether (meth) acrylates, polyurethane (meth) acrylates, unsaturated polyesters, unsaturated Polyurethanes or silicone (meth) acrylates with number average molecular weights (Mn) are preferred in the range from 200 to 10,000, particularly preferably from 500 to 3000 and with an average 2 to 20, preferably 3 to 10 radically polymerizable, olefinic double bonds per Molecule.
  • (Meth) acrylic here means acrylic and / or methacrylic.
  • reactive diluents are used, for example, in amounts of 1 to 50 % By weight, preferably from 5 to 30% by weight, based on the total weight of prepolymers and reactive thinners. It is defined as low molecular weight Compounds that can be mono-, di- or poly-unsaturated.
  • Reactive thinners examples include: (meth) acrylic acid and its esters, maleic acid and its half esters, Vinyl acetate, vinyl ether, substituted vinyl ureas, ethylene and Propylene glycol di (meth) acrylate, 1,3- and 1,4-butanediol di (meth) acrylate, vinyl (meth) acrylate, Allyl (meth) acrylate, glycerol tri, di and mono (meth) acrylate, trimethylolpropane tri, di and -mono (meth) acrylate, styrene, vinyl toluene, divinylbenzene, pentaerythritol and -tetra (meth) acrylate, di- and tripropylene glycol di (meth) acrylate, hexanediol di (meth) acrylate.
  • Reactive thinners can be used individually or in a mixture.
  • Reactive thinners diacrylates such as e.g. Dipropylene glycol diacrylate, tripropylene glycol diacrylate and / or hexanediol diacrylate used.
  • the free radical curing coating compositions contain photoinitiators, e.g. in quantities of 0.1 to 5 wt .-%, preferably from 0.5 to 3 wt .-%, based on the sum of radical polymerizable prepolymers, reactive diluents and photoinitiators.
  • photoinitiators such as benzoin and derivatives, acetophenone and derivatives, e.g. 2,2-diacetoxyacetophenone, benzophenone and derivatives, thioxanthone and derivatives, anthraquinone, 1-benzoylcyclohexanol, organophosphorus compounds, such as e.g. Acyl phosphine oxides.
  • the photoinitiators can be used alone or in combination.
  • other synergistic components e.g. tertiary amines used become.
  • Coating agents that can be partially hardened can be used in addition to that using high-energy radiation curable binder system contain one or more other binders.
  • Both any additional binders that may be present may be, for example usual binder systems curable by means of addition and / or condensation reactions and / or are conventional physically drying binder systems. It is also possible, that the binder system itself, which is curable by means of high-energy radiation, in addition to the radical polymerizable double bonds for crosslinking by addition and / or Has condensation reactions capable groups.
  • the addition and / or condensation reactions act in the aforementioned sense it is lacquer chemical crosslinking reactions known to the person skilled in the art, for example the ring-opening addition of an epoxy group to a carboxyl group to form a Ester and a hydroxyl group, the addition of a hydroxyl group to an isocyanate group to form a urethane group, the reaction of a hydroxyl group with a blocked Isocyanate group with formation of a urethane group and cleavage of the Blocking agent, the reaction of a hydroxyl group with an N-methylol group Dehydration, the reaction of a hydroxyl group with an N-methylol ether group Elimination of the etherification alcohol, the transesterification reaction with a hydroxyl group an ester group with elimination of the esterification alcohol, the Umurethanization reaction of a hydroxyl group with a carbamate group under Elimination of alcohol, the reaction of a carbamate group with an N-methylol ether group
  • Partly curable coating agents can additional, customary for the paint formulation Components included.
  • the additives are the usual additives that can be used in the paint sector. Examples of such Additives are leveling agents, anti-cratering agents, anti-foaming agents, catalysts, Adhesion promoter, rheology-influencing additives, thickeners, light stabilizers and Emulsifiers.
  • the additives are used in customary amounts known to the person skilled in the art.
  • the coating compositions which can be used in the process according to the invention can be slight Contain quantities of organic solvents and / or water. Solvents it is a common paint solvent. These can be made from the production of the Binders originate or are added separately. Examples of such solvents are or polyhydric alcohols, e.g. Propanol, butanol, hexanol; Glycol ethers or esters, e.g. Diethylene glycol dialkyl ether, dipropylene glycol dialkyl ether, each with Cl to C6 alkyl, Ethoxypropanol, butyl glycol; Glycols, e.g.
  • esters e.g. Butyl acetate and amyl acetate
  • N-methylpyrrolidone and ketones e.g. Methyl ethyl ketone, acetone, cyclohexanone
  • aromatic or aliphatic Hydrocarbons e.g. Toluene, xylene or linear or branched aliphatic C6-C12 hydrocarbons.
  • the coating compositions which can be used in the process according to the invention can be pigments and / or fillers. These are the usual ones in the paint industry usable fillers and organic or inorganic color and / or effect Pigments and anti-corrosion pigments.
  • inorganic or organic Color pigments are titanium dioxide, micronized titanium dioxide, iron oxide pigments, carbon black, Azo pigments, phthalocyanine pigments, quinacridone and pyrrolopyrrole pigments.
  • Effect pigments are: metal pigments, e.g. made of aluminum, copper or other metals; Interference pigments, e.g. metal oxide coated metal pigments, e.g. titanium dioxide coated or mixed oxide coated aluminum, coated mica, such as e.g. titanium dioxide coated mica and graphite effect pigments.
  • fillers are Silicon dioxide, aluminum silicate, barium sulfate and talc.
  • the general composition of the coating agents that can be used for example the type the pigmentation depends on which layer of the multilayer structure with the Coating agents should be created.
  • the invention is illustrated by the following example.
  • a water-based lacquer (produced in accordance with DE-A-196 43 802, production example 4) was applied to filler-coated KTL sheet metal in a resulting dry film layer thickness of approximately 15 ⁇ m. This was followed by IR radiation.
  • a UV flash lamp (power 3500 Ws, approx. 50% IR radiation component in the emission spectrum) provided with an attachable UV filter (glass filter GG 475 from Schott, size: 50 x 50 mm 2 , thickness: 2 mm) used.
  • the irradiation was carried out with 30 flashes, which were triggered at a distance of about 4 s, at an object distance of about 20 cm.
  • the applied clear lacquer was subjected to IR radiation.
  • the above-mentioned UV flash lamp modified with the UV filter was used.
  • the irradiation was carried out with 20 flashes, which were triggered at intervals of approx. 4 s, at an object distance of approximately 20 cm.
  • the UV radiation then took place.
  • the UV filter was removed from the UV flash lamp and an IR filter (glass filter FG 3 from Schott, size: 50 x 50 mm 2 , thickness: 2 mm) was attached.
  • the irradiation was carried out with 20 flashes, which were triggered at intervals of approx. 4 s, at an object distance of approximately 20 cm.

Claims (11)

  1. Procédé d'application multicouche d'une peinture, par l'application d'une ou de plusieurs couches de charge et/ou d'autres couches de revêtement sur un substrat, le cas échéant prélaqué, et ensuite, d'une couche de peinture de finition se composant d'une peinture de base et d'un vernis clair ou d'une peinture de finition monocouche pigmentée, où au moins une des couches de la structure multicouche est obtenue à partir d'un agent de revêtement durcissable au moins partiellement, au moyen d'un rayonnement riche en énergie, et cette couche ou ces couches est ou sont irradiée(s) en utilisant un rayonnement ultraviolet et un rayonnement infrarouge, caractérisé en ce que l'on utilise, pour l'irradiation avec un rayonnement ultraviolet et avec un rayonnement infrarouge, une source de rayonnement ultraviolet qui comprend, dans son spectre d'émission, une partie de rayonnement infrarouge, et en ce qu'au moins deux intervalles d'irradiation sont formés devant la source de rayonnement, par la mise en place alternée, en amont, d'un filtre ultraviolet et d'un filtre infrarouge et/ou par la mise en place alternée, en amont, et par la suppression d'un filtre ultraviolet ou d'un filtre infrarouge, intervalles d'irradiation au cours desquels on irradie de façon variable avec un rayonnement ultraviolet, avec un rayonnement infrarouge ou, en même temps, avec un rayonnement ultraviolet et avec un rayonnement infrarouge.
  2. Procédé selon la revendication 1, caractérisé en ce que le filtre ultraviolet et le filtre infrarouge sont disposés en amont, de façon alternée et, par conséquent, des. intervalles d'irradiation sont formés par un rayonnement infrarouge et par un rayonnement ultraviolet.
  3. Procédé selon la revendication 1, caractérisé en ce que, de façon alternée, un filtre ultraviolet est disposé en amont et supprimé, grâce à quoi des intervalles d'irradiation alternés se produisent avec un rayonnement infrarouge et se produisent, en même temps, avec un rayonnement ultraviolet et avec un rayonnement infrarouge.
  4. Procédé selon la revendication 1, caractérisé en ce que, de façon alternée, un filtre infrarouge est disposé en amont et supprimé, grâce à quoi des intervalles d'irradiation sont formés avec un rayonnement ultraviolet et, sont formés, en même temps, avec un rayonnement infrarouge et avec un rayonnement ultraviolet.
  5. Procédé selon l'une quelconque des revendications 1 à 3, caractérisé en ce que le premier intervalle d'irradiation est obtenu avec un rayonnement infrarouge, par la mise en place, en amont, d'un filtre ultraviolet.
  6. Procédé selon la revendication 5, caractérisé en ce que le premier intervalle d'irradiation est obtenu avec un rayonnement infrarouge, par la mise en place, en amont, d'un filtre ultraviolet, et en ce que le deuxième intervalle d'irradiation est obtenu avec un rayonnement ultraviolet, par la mise en place, en amont, d'un filtre infrarouge.
  7. Procédé selon la revendication 5, caractérisé en ce qu'un troisième intervalle d'irradiation est obtenu ensuite avec un rayonnement infrarouge, par la mise en place, en amont, d'un filtre ultraviolet.
  8. Procédé selon l'une quelconque des revendications précédentes, caractérisé en ce que l'on peut utiliser une source de rayonnement ultraviolet qui comprend, dans son spectre d'émission, une partie de rayonnement infrarouge dans la plage de longueur d'ondes comprise entre 700 nm et 2500 nm.
  9. Procédé selon l'une quelconque des revendications précédentes, caractérisé en ce que des intervalles d'irradiation sont utilisés avec un rayonnement infrarouge seul, ou avec un rayonnement infrarouge associé à un rayonnement ultraviolet, dans la plage comprise entre 0,5 minute et 30 minutes.
  10. Procédé selon l'une quelconque des revendications précédentes, caractérisé en ce que, pour l'irradiation avec un rayonnement ultraviolet, on utilise des intervalles d'irradiation suivant un ordre de grandeur compris entre une milliseconde et 5 minutes.
  11. Procédé selon l'une quelconque des revendications précédentes, caractérisé en ce que l'on utilise, comme source de rayonnement ultraviolet, des lampes éclairs à rayons ultraviolets.
EP99958117A 1998-12-16 1999-11-24 Procede pour appliquer une peinture a plusieurs couches comportant des agents de revetement durcissables au moyen d'un rayonnement Expired - Lifetime EP1060029B1 (fr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE19857940A DE19857940C1 (de) 1998-12-16 1998-12-16 Verfahren zur Mehrschichtlackierung mit strahlenhärtbaren Beschichtungsmitteln
DE19857940 1998-12-16
PCT/EP1999/009062 WO2000035597A1 (fr) 1998-12-16 1999-11-24 Procede pour appliquer une peinture a plusieurs couches comportant des agents de revetement durcissables au moyen d'un rayonnement

Publications (2)

Publication Number Publication Date
EP1060029A1 EP1060029A1 (fr) 2000-12-20
EP1060029B1 true EP1060029B1 (fr) 2003-08-13

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US (1) US6528126B1 (fr)
EP (1) EP1060029B1 (fr)
JP (1) JP2002532233A (fr)
AT (1) ATE246966T1 (fr)
CA (1) CA2320314A1 (fr)
DE (2) DE19857940C1 (fr)
ES (1) ES2203212T3 (fr)
WO (1) WO2000035597A1 (fr)

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DE10009822C1 (de) * 2000-03-01 2001-12-06 Basf Coatings Ag Verfahren zur Herstellung von Beschichtungen, Klebschichten oder Dichtungen für grundierte oder ungrundierte Substrate und Substrate
DE10055549A1 (de) * 2000-11-09 2002-05-29 Basf Coatings Ag Farb- und/oder effektgebende Mehrschichtlackierung, Verfahren zu ihrer Herstellung und ihre Verwendung
DE50110461D1 (de) 2001-12-22 2006-08-24 Moletherm Holding Ag Energietransmitter als Bestandteil einer Beschichtungs- und/oder Trockenanlage, insbesondere für eine Lackbeschichtung
AU2003227819A1 (en) * 2002-03-06 2003-09-16 Solaronics Technologies Method for photopolymerzation of a polymerisable coating, installation therefor and product comprising the coating obtained
US6908644B2 (en) * 2003-02-04 2005-06-21 Ford Global Technologies, Llc Clearcoat insitu rheology control via UV cured oligomeric additive network system
DE10309669A1 (de) * 2003-03-06 2004-09-16 Volkswagen Ag Verfahren zur Trocknung wenigstens einer Lackschicht auf einem Substrat
DE102004016093A1 (de) * 2004-04-01 2005-10-20 Volkswagen Ag Verfahren zur Trocknung wenigstens einer Lackschicht auf einem Substrat
US7510746B2 (en) * 2004-06-04 2009-03-31 E.I. Du Pont De Nemours And Company Process for production of multilayer coating including curing clear-coat composition with high-energy radiation
DE102004033260A1 (de) * 2004-07-09 2006-01-19 Daimlerchrysler Ag Verfahren und Vorrichtung zum Aushärten von strahlungsinduziert härtbaren Lacken
DE102005001683B4 (de) * 2005-01-13 2010-01-14 Venjakob Maschinenbau Gmbh & Co. Kg Verfahren und Vorrichtung zum Trocknen von Lackschichten
NL1029274C2 (nl) * 2005-06-17 2006-12-19 Trespa Int Bv Werkwijze voor het aanbrengen van een laag op een drager, alsmede een samenstel.
ES2326301B1 (es) 2007-08-09 2010-06-29 Bulma Tecnologia, S.L. Procedimiento de reparacion de defectos de pintura en sector de la automocion por secado ultravioleta.
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Publication number Publication date
JP2002532233A (ja) 2002-10-02
ES2203212T3 (es) 2004-04-01
DE59906592D1 (de) 2003-09-18
US6528126B1 (en) 2003-03-04
WO2000035597A1 (fr) 2000-06-22
EP1060029A1 (fr) 2000-12-20
ATE246966T1 (de) 2003-08-15
CA2320314A1 (fr) 2000-06-22
DE19857940C1 (de) 2000-07-27

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