EP1242193B1 - Method for producing coated metal surfaces and the use of said metal surfaces - Google Patents
Method for producing coated metal surfaces and the use of said metal surfaces Download PDFInfo
- Publication number
- EP1242193B1 EP1242193B1 EP00983330A EP00983330A EP1242193B1 EP 1242193 B1 EP1242193 B1 EP 1242193B1 EP 00983330 A EP00983330 A EP 00983330A EP 00983330 A EP00983330 A EP 00983330A EP 1242193 B1 EP1242193 B1 EP 1242193B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- layer
- pretreatment agent
- lacquer
- pretreatment
- powder
- 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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Classifications
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- 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
- B05D7/544—No clear coat specified the first layer is let to dry at least partially before applying the second layer
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- 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
- B05D3/10—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 other chemical means
- B05D3/102—Pretreatment of metallic substrates
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- 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
- B05D7/14—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 metal, e.g. car bodies
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- C—CHEMISTRY; METALLURGY
- C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
- C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
- C23C22/00—Chemical surface treatment of metallic material by reaction of the surface with a reactive liquid, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals
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- C—CHEMISTRY; METALLURGY
- C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
- C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
- C23C22/00—Chemical surface treatment of metallic material by reaction of the surface with a reactive liquid, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals
- C23C22/05—Chemical surface treatment of metallic material by reaction of the surface with a reactive liquid, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals using aqueous solutions
Definitions
- the invention relates to a method for producing coated Metal surfaces where the coating is done at high speed can.
- Such coatings are today under the term "coil coating” Coating of tapes used.
- the known high-speed coating processes have the disadvantage on that the pretreatment and the primer in two separate steps be applied.
- GB-A-2 334 906 teaches a process for making multi-coated metallic tape on which with a chemical pretreatment coated tape a layer of a thermoplastic resin is applied.
- the object of the invention is to provide a process for the industrial production of to propose painted tapes, in which the pretreatment and priming in can only be applied in one operation.
- the object is achieved by a process for the production of coated Metal surfaces with a coating speed of at least 25 m per Minute when applying at least one pretreatment agent to one cleaned or / and pickled metal surface of a metallic strip, the is characterized in that on at least one side of the tape cleaning or / and pickling of the metallic to be treated Surface at least one pretreatment agent is applied and then on at least part of the pretreated surface, especially on one side of the tape, at least one layer of varnish is applied, that with a Pretreatment agent and coating not produced with a varnish as Treatment layer instead of a primer and pre-treatment layer is used, the side not intended for subsequent painting the tape preferably with an organic resin-containing Pretreatment agent is coated that for subsequent painting intended side of the belt with at least one pretreatment agent is coated and that on the intended for subsequent painting, pretreated side of the tape the at least one layer of paint as a powder coating is applied and baked.
- the pretreated surface or the pretreated surfaces preferably becomes one Side of a tape, in which at least one of the narrow edge surfaces of the tape can be partially pretreated.
- the coating speed is preferably 40 to 600 m per minute, particularly preferably 75 to 160 m per minute.
- the treatment layer takes over the functions of the primer.
- the other part of the pretreated The surface is no longer retrofitted on the coil coating machine Lacquer covered.
- the inventive method can be used so that moisture or Preserve residual moisture in the applied pre-treatment layer until painting remains to the necessary electrical conductivity for the application of the lacquer layer the pretreated surface.
- the metal surface can be aluminum, iron, Contain copper, magnesium, zinc and / or tin and can preferably be from a Aluminum alloy, hot-dip galvanized or electrolytically galvanized Iron material, a steel, a solid zinc material in the form of strips or Sheet or tinplate exist.
- the body can be flat or be deformed without or with recesses such as provided with a perforated structure his.
- the recesses of a perforated plate can all be the same or possibly also have different geometries and sizes: e.g. circular holes, Slots, slots.
- the cleaning and / or pickling of the metallic surface can be done by Spray or / and brush with a cleaning or pickling solution or immerse in a bath of this solution.
- the pretreatment of the cleaned and / or pickled surface can be carried out by Spraying and squeezing e.g. with a roller, by spraying and blowing off e.g. with compressed air, by dipping and squeezing e.g. with a roller, through Diving and blowing off e.g. with compressed air or in the roll-coat process.
- Spraying and squeezing e.g. with a roller
- spraying and blowing off e.g. with compressed air
- dipping and squeezing e.g. with a roller through Diving and blowing off e.g. with compressed air or in the roll-coat process.
- the treatment liquid with a coating roller or applied against the tape running direction At all of these Process variants, no subsequent rinsing is carried out to remove or to avoid damage to the applied layer and in order to Avoid chemicals contaminated rinse water, which is expensive for environmental reasons need to be treated.
- the pretreatment agent can be a preparation that is a polymer dispersion with at least one resin from the group of acrylate, epoxy, phenol, polyester, Silicone polyester, polyurethane, styrene and resin based on urea-formaldehyde or their mixture or / and copolymer.
- the preparation contains in addition to volatile components, a non-volatile film-forming mixture.
- the preparation can contain at least one resin as a solution and / or as a dispersion.
- the preparation can contain at least one inorganic additive dissolved form or / and as a finely divided powder such as a carbonate, chromate, Contain oxide, phosphate, silicate, sulfate.
- the pretreatment agent can also be a resin-free preparation, the Preparation aluminum, fluoride, hydrofluoric acid, phosphate, phosphoric acid, three or / and hexavalent chromate, chromic acid, silicate, silane, tannin, titanium, zinc, Zirconium and / or self-organizing molecules e.g. based on May contain phosphonates, carboxylic acids, thiols and / or silanes.
- one side of the band can be used different pretreatment agent are chosen than for the other side, the side not intended for subsequent painting with an organic resin containing pretreatment agent can be coated.
- the pre-treatment acts as a final treatment.
- the layer can either be partially dried or thoroughly dried. This can - especially with the same Belt speed and when using existing furnaces - by a shorter one Residence time under the active drying conditions, due to a lower one Temperature in the oven and / or by a lower air movement for drying the Band are implemented.
- At least one side of the pretreated surface is preferably covered with a organic coating coated in a time from 1 second to 3 Minutes hardened or crosslinked sufficiently, particularly preferably in a time of 5 seconds to 2 minutes.
- a powder coating is preferred for coating the pretreated surface applied and baked, especially a powder coating with good mechanical Properties, high scratch resistance, good adhesion and high flexibility in relation on the forming.
- the powder coating can be sprayed or sintered or / and Powder Cloud Technology are applied or burned in.
- the Powder cloud technology is used in EP-A-0 678 466.
- the branding can be used instead of conventional circulating air drying or suspended circulating air drying in particular by conductive drying in the case of magnetic materials or by Infrared drying, especially in the near infrared (NIR).
- the pretreatment or treatment layer can after complete drying have a layer thickness in the range from 0.1 to 50 ⁇ m, preferably in the range from 0.5 to 10 ⁇ m, very particularly preferably in the range from 1 to 3 ⁇ m.
- the burned-in lacquer layer which is located on the pretreatment layer, can have a layer thickness in the range from 5 to 1000 ⁇ m after crosslinking, preferably in the range from 10 to 400 ⁇ m, very particularly preferably in the range from 15 to 60 ⁇ m.
- a layer thickness in the range of 100 to 300 ⁇ m.
- the method according to the invention uses a Single-layer topcoat applied as the only lacquer to the tape to be coated.
- a treatment layer can be formed with the pretreatment agent, which function as a pretreatment and at the same time a primer takes over.
- the primer takes on the function of Corrosion protection, liability and flexibility met, but not in stronger Measure also an aesthetic function.
- a powder for a monochrome, unstructured coating can be used in the powder coating Powder for a multicolored unstructured coating and / or a powder for one multicolored textured coating can be used.
- the coated surface can be at least partially covered by a film or Protect adhesive film, especially against mechanical impairment e.g. during storage, transportation and further processing.
- coated bodies can optionally be deformed, cut - in particular cut lengthways and / or crossways - and if necessary deformed again, e.g. beaded, roll-formed, deep-drawn or / and be folded.
- the products produced by the process according to the invention can be used as Internal and external cladding, device cladding e.g. for household appliances and Small electrical appliances, especially with decorated external cladding, perforated sheets especially for loudspeakers and sound insulation panels, room dividers, Partitions, furniture elements, shelves, vehicle and aircraft interior linings such as. Dashboards, frames and frame constructions, facings, Lighting fixtures can be used.
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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Chemical Kinetics & Catalysis (AREA)
- General Chemical & Material Sciences (AREA)
- Materials Engineering (AREA)
- Wood Science & Technology (AREA)
- Life Sciences & Earth Sciences (AREA)
- Mechanical Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Application Of Or Painting With Fluid Materials (AREA)
- Laminated Bodies (AREA)
- Chemically Coating (AREA)
- Paints Or Removers (AREA)
- Other Surface Treatments For Metallic Materials (AREA)
Abstract
Description
Die Erfindung betrifft ein Verfahren zur Herstellung von beschichteten Metalloberflächen, bei dem die Beschichtung mit hoher Geschwindigkeit erfolgen kann. Derartige Beschichtungen werden heute unter dem Begriff "coil coating" zur Beschichtung von Bändern genutzt.The invention relates to a method for producing coated Metal surfaces where the coating is done at high speed can. Such coatings are today under the term "coil coating" Coating of tapes used.
Die bekannten Beschichtungsverfahren hoher Geschwindigkeit weisen den Nachteil auf, daß die Vorbehandlung und die Grundierung in zwei getrennten Schritten aufgebracht werden.The known high-speed coating processes have the disadvantage on that the pretreatment and the primer in two separate steps be applied.
GB-A-2 334 906 lehrt ein Verfahren zur Herstellung von mehrfach beschichtetem metallischen Band, bei dem auf ein mit einer chemischen Vorbehandlung beschichtetes Band eine Schicht eines thermoplastischen Harzes aufgebracht wird.GB-A-2 334 906 teaches a process for making multi-coated metallic tape on which with a chemical pretreatment coated tape a layer of a thermoplastic resin is applied.
Aufgabe der Erfindung ist es, ein Verfahren für die großtechnische Herstellung von lackierten Bändern vorzuschlagen, bei dem die Vorbehandlung und Grundierung in nur einem Arbeitsgang aufgebracht werden kann.The object of the invention is to provide a process for the industrial production of to propose painted tapes, in which the pretreatment and priming in can only be applied in one operation.
Die Aufgabe wird gelöst durch ein Verfahren zur Herstellung von beschichteten Metalloberflächen bei einer Beschichtungsgeschwindigkeit von mindestens 25 m pro Minute bei dem Auftragen mindestens eines Vorbehandlungsmittels auf eine gereinigte oder/und gebeizte Metalloberfläche eines metallischen Bandes, das dadurch gekennzeichnet ist, dass auf mindestens einer Seite des Bandes nach einem Reinigen oder/und einem Beizen der zu behandelnden metallischen Oberfläche mindestens ein Vorbehandlungsmittel aufgetragen wird und danach auf mindestens einem Teil der vorbehandelten Oberfläche, insbesondere auf einer Seite des Bandes, mindestens eine Lackschicht aufgetragen wird, dass die mit einem Vorbehandlungsmittel und nicht mit einem Lack hergestellte Beschichtung als Behandlungsschicht anstelle einer Grundierungs- und Vorbehandlungsschicht eingesetzt wird, wobei die nicht zur nachträglichen Lackierung vorgesehene Seite des Bandes vorzugsweise mit einem organisches Harz enthaltenden Vorbehandlungsmittel beschichtet wird, dass die zur nachträglichen Lackierung vorgesehene Seite des Bandes mit mindestens einem Vorbehandlungsmittel beschichtet wird und dass auf der zur nachträglichen Lackierung vorgesehenen, vorbehandelten Seite des Bandes die mindestens eine Lackschicht als Pulverlack aufgetragen und eingebrannt wird.The object is achieved by a process for the production of coated Metal surfaces with a coating speed of at least 25 m per Minute when applying at least one pretreatment agent to one cleaned or / and pickled metal surface of a metallic strip, the is characterized in that on at least one side of the tape cleaning or / and pickling of the metallic to be treated Surface at least one pretreatment agent is applied and then on at least part of the pretreated surface, especially on one side of the tape, at least one layer of varnish is applied, that with a Pretreatment agent and coating not produced with a varnish as Treatment layer instead of a primer and pre-treatment layer is used, the side not intended for subsequent painting the tape preferably with an organic resin-containing Pretreatment agent is coated that for subsequent painting intended side of the belt with at least one pretreatment agent is coated and that on the intended for subsequent painting, pretreated side of the tape the at least one layer of paint as a powder coating is applied and baked.
Vorzugsweise wird die vorbehandelte Fläche bzw. die vorbehandelten Flächen eine Seite eines Bandes sein, bei dem gegebenenfalls auch mindestens eine der schmalen Randflächen des Bandes teilweise vorbehandelt sein kann.The pretreated surface or the pretreated surfaces preferably becomes one Side of a tape, in which at least one of the narrow edge surfaces of the tape can be partially pretreated.
Die Beschichtungsgeschwindigkeit beträgt vorzugsweise 40 bis 600 m pro Minute, besonders bevorzugt 75 bis 160 m pro Minute. Die Behandlungsschicht übernimmt dabei die Funktionen der Grundierung (Primer). Der andere Teil der vorbehandelten Oberfläche wird nachträglich nicht mehr auf der Bandbeschichtungsanlage mit einem Lack überzogen.The coating speed is preferably 40 to 600 m per minute, particularly preferably 75 to 160 m per minute. The treatment layer takes over the functions of the primer. The other part of the pretreated The surface is no longer retrofitted on the coil coating machine Lacquer covered.
Das erfindungsgemäße Verfahren kann so eingesetzt werden, daß Feuchtigkeit oder Restfeuchte in der aufgetragenen Vorbehandlungsschicht bis zum Lackieren erhalten bleibt, um die für das Aufbringen der Lackschicht notwendige elektrische Leitfähigkeit der vorbehandelten Oberfläche einzustellen.The inventive method can be used so that moisture or Preserve residual moisture in the applied pre-treatment layer until painting remains to the necessary electrical conductivity for the application of the lacquer layer the pretreated surface.
Die Metalloberfläche kann vor dem Vorbehandeln insbesondere Aluminium, Eisen, Kupfer, Magnesium, Zink oder/und Zinn enthalten und kann vorzugsweise aus einer Aluminiumlegierung, einem schmelztauchverzinkten oder elektrolytisch verzinkten Eisenwerkstoff, einem Stahl, einem Zink-Vollmaterial in Form von Bändern oder Blechen oder einem Weißblech bestehen. Hierbei können die Körper eben oder verformt sein, ohne oder mit Ausnehmungen wie z.B. mit einer Lochstruktur versehen sein. Die Ausnehmungen einer Lochplatte können alle die gleiche oder ggf. auch unterschiedliche Geometrien und Größen aufweisen: Z.B. kreisförmige Löcher, Langlöcher, Schlitze.Before the pretreatment, the metal surface can be aluminum, iron, Contain copper, magnesium, zinc and / or tin and can preferably be from a Aluminum alloy, hot-dip galvanized or electrolytically galvanized Iron material, a steel, a solid zinc material in the form of strips or Sheet or tinplate exist. The body can be flat or be deformed without or with recesses such as provided with a perforated structure his. The recesses of a perforated plate can all be the same or possibly also have different geometries and sizes: e.g. circular holes, Slots, slots.
Die Reinigung oder/und das Beizen der metallischen Oberfläche kann durch Sprühen oder/und Bürsten mit einer Reinigungs- bzw. Beizlösung oder Tauchen in ein Bad dieser Lösung erfolgen.The cleaning and / or pickling of the metallic surface can be done by Spray or / and brush with a cleaning or pickling solution or immerse in a bath of this solution.
Die Vorbehandlung der gereinigten oder/und gebeizten Oberfläche kann durch Aufsprühen und Abquetschen z.B. mit einer Walze, durch Aufsprühen und Abblasen z.B. mit Preßluft, durch Tauchen und Abquetschen z.B. mit einer Walze, durch Tauchen und Abblasen z.B. mit Preßluft oder im Roll-Coat-Verfahren erfolgen. Beim Roll-Coat-Verfahren wird die Behandlungsflüssigkeit mit einer Beschichtungswalze in oder entgegen der Bandlaufrichtung aufgetragen. Bei allen diesen Verfahrensvarianten wird keine nachträgliche Spülung ausgeführt, um einen Abtrag bzw. eine Beschädigung der aufgebrachten Schicht zu vermeiden und um mit Chemikalien belastete Spülwässer zu vermeiden, die aus Umweltgründen aufwendig nachbehandelt werden müssen.The pretreatment of the cleaned and / or pickled surface can be carried out by Spraying and squeezing e.g. with a roller, by spraying and blowing off e.g. with compressed air, by dipping and squeezing e.g. with a roller, through Diving and blowing off e.g. with compressed air or in the roll-coat process. At the Roll-coat process the treatment liquid with a coating roller or applied against the tape running direction. With all of these Process variants, no subsequent rinsing is carried out to remove or to avoid damage to the applied layer and in order to Avoid chemicals contaminated rinse water, which is expensive for environmental reasons need to be treated.
Das Vorbehandlungsmittel kann eine Zubereitung sein, die eine Polymerdispersion mit mindestens einem Harz aus der Gruppe von Acrylat, Epoxid, Phenol, Polyester, Siliconpolyester, Polyurethan, Styrol und Harz auf der Basis Harnstoff-Formaldehyd bzw. deren Mischung oder/und Mischpolymerisat enthält. Die Zubereitung enthält neben flüchtigen Anteilen ein nichtflüchtiges filmbildendes Gemisch. Die Zubereitung kann mindestens ein Harz als Lösung oder/und als Dispersion enthalten. Die Zubereitung kann neben Harz(en) mindestens einen anorganischen Zusatz in gelöster Form oder/und als feinverteiltes Pulver wie z.B. ein Carbonat, Chromat, Oxid, Phosphat, Silicat, Sulfat enthalten.The pretreatment agent can be a preparation that is a polymer dispersion with at least one resin from the group of acrylate, epoxy, phenol, polyester, Silicone polyester, polyurethane, styrene and resin based on urea-formaldehyde or their mixture or / and copolymer. The preparation contains in addition to volatile components, a non-volatile film-forming mixture. The preparation can contain at least one resin as a solution and / or as a dispersion. The In addition to resin (s), the preparation can contain at least one inorganic additive dissolved form or / and as a finely divided powder such as a carbonate, chromate, Contain oxide, phosphate, silicate, sulfate.
Das Vorbehandlungsmittel kann auch eine Harz-freie Zubereitung sein, wobei die Zubereitung Aluminium, Fluorid, Flußsäure, Phosphat, Phosphorsäure, dreioder/und sechswertiges Chromat, Chromsäure, Silicat, Silan, Tannin, Titan, Zink, Zirkonium oder/und selbst organisierende Moleküle z.B. auf Basis von Phosphonaten, Carbonsäuren, Thiolen oder/und Silanen enthalten kann.The pretreatment agent can also be a resin-free preparation, the Preparation aluminum, fluoride, hydrofluoric acid, phosphate, phosphoric acid, three or / and hexavalent chromate, chromic acid, silicate, silane, tannin, titanium, zinc, Zirconium and / or self-organizing molecules e.g. based on May contain phosphonates, carboxylic acids, thiols and / or silanes.
Für den Auftrag auf ein metallisches Band kann für die eine Seite des Bandes ein anderes Vorbehandlungsmittel gewählt werden als für die andere Seite, wobei die nicht zur nachträglichen Lackierung vorgesehene Seite mit einem organisches Harz enthaltenden Vorbehandlungsmittel beschichtet werden kann. Hierbei wird ggf. z.B. nur eine Seite eines Bandes - z.B. die Oberseite - lackiert, während auf der entgegengesetzten Seite die Vorbehandlung als Endbehandlung wirkt.For the application on a metallic band one side of the band can be used different pretreatment agent are chosen than for the other side, the side not intended for subsequent painting with an organic resin containing pretreatment agent can be coated. Here, e.g. only one side of a volume - e.g. the top - painted while on the on the opposite side, the pre-treatment acts as a final treatment.
Nach dem Aufbringen des Behandlungsmittels kann die Schicht entweder teilgetrocknet oder durchgetrocknet werden. Dies kann - insbesondere bei gleicher Bandgeschwindigkeit und bei Nutzung vorhandener Öfen - durch eine kürzere Verweilzeit unter den aktiven Trocknungsbedingungen, durch eine geringere Temperatur im Ofen oder/und durch eine geringere Luftbewegung für Trocknung des Bandes umgesetzt werden.After application of the treatment agent, the layer can either be partially dried or thoroughly dried. This can - especially with the same Belt speed and when using existing furnaces - by a shorter one Residence time under the active drying conditions, due to a lower one Temperature in the oven and / or by a lower air movement for drying the Band are implemented.
Vorzugsweise wird mindestens eine Seite der vorbehandelten Oberfläche mit einer organischen Beschichtung überzogen, die in einer Zeit von 1 Sekunde bis zu 3 Minuten ausreichend aushärtet bzw. vernetzt, besonders bevorzugt in einer Zeit von 5 Sekunden bis 2 Minuten.At least one side of the pretreated surface is preferably covered with a organic coating coated in a time from 1 second to 3 Minutes hardened or crosslinked sufficiently, particularly preferably in a time of 5 seconds to 2 minutes.
Für die Beschichtung der vorbehandelten Oberfläche wird bevorzugt ein Pulverlack aufgetragen und eingebrannt, insbesondere ein Pulverlack mit guten mechanischen Eigenschaften, hoher Kratzfestigkeit, guter Haftung und hoher Flexibilität in Bezug auf die Umformung. Der Pulverlack kann hierbei durch Sprühen, Wirbelsintern oder/und Powder Cloud Technology aufgebracht bzw. eingebrannt werden. Die Powder Cloud Technology wird u.a. in EP-A-0 678 466 beschrieben. Das Einbrennen kann anstelle der herkömmlichen Umlufttrocknung oder Schwebeumlufttrocknung insbesondere durch konduktive Trocknung bei magnetischen Werkstoffen bzw. durch Infrarottrocknung, insbesondere im Nahen Infrarot (NIR) erfolgen.A powder coating is preferred for coating the pretreated surface applied and baked, especially a powder coating with good mechanical Properties, high scratch resistance, good adhesion and high flexibility in relation on the forming. The powder coating can be sprayed or sintered or / and Powder Cloud Technology are applied or burned in. The Powder cloud technology is used in EP-A-0 678 466. The branding can be used instead of conventional circulating air drying or suspended circulating air drying in particular by conductive drying in the case of magnetic materials or by Infrared drying, especially in the near infrared (NIR).
Die Vorbehandlungs- bzw. Behandlungsschicht kann nach vollständigem Trocknen eine Schichtdicke im Bereich von 0,1 bis 50 µm aufweisen, vorzugsweise im Bereich von 0,5 bis 10 µm, ganz besonders bevorzugt im Bereich von 1 bis 3 µm.The pretreatment or treatment layer can after complete drying have a layer thickness in the range from 0.1 to 50 μm, preferably in the range from 0.5 to 10 µm, very particularly preferably in the range from 1 to 3 µm.
Die eingebrannte Lackschicht, die sich auf der Vorbehandlungsschicht befindet, kann nach dem Vernetzen eine Schichtdicke im Bereich von 5 bis 1000 µm aufweisen, vorzugsweise im Bereich von 10 bis 400 µm, ganz besonders bevorzugt im Bereich von 15 bis 60 µm. Bei der Verwendung von PVC-Plastisolen kann es sich empfehlen, eine Schichtdicke im Bereich von 100 bis 300 µm zu wählen.The burned-in lacquer layer, which is located on the pretreatment layer, can have a layer thickness in the range from 5 to 1000 μm after crosslinking, preferably in the range from 10 to 400 μm, very particularly preferably in the range from 15 to 60 µm. When using PVC plastisols it can be recommended to choose a layer thickness in the range of 100 to 300 µm.
Bei dem erfindungsgemäßen Verfahren wird in einer bevorzugten Ausgestaltung ein Einschichtdecklack als einziger Lack auf das zu beschichtende Band aufgebracht.In a preferred embodiment, the method according to the invention uses a Single-layer topcoat applied as the only lacquer to the tape to be coated.
Mit dem Vorbehandlungsmittel kann eine Behandlungsschicht ausgebildet werden, die die Funktion einer Vorbehandlung und gleichzeitig einer Grundierung (Primer) übernimmt. Die Grundierung (Primer) übernimmt hierbei die Funktion des Korrosionsschutzes, der Haftung und der Flexibilität erfüllt, aber nicht in stärkerem Maß auch eine ästhetische Funktion.A treatment layer can be formed with the pretreatment agent, which function as a pretreatment and at the same time a primer takes over. The primer takes on the function of Corrosion protection, liability and flexibility met, but not in stronger Measure also an aesthetic function.
Bei dem Pulverlack kann ein Pulver für einen einfarbig unstrukturierten Überzug, ein Pulver für einen mehrfarbig unstrukturierten Überzug oder/und ein Pulver für einen mehrfarbig strukturierten Überzug verwendet werden.A powder for a monochrome, unstructured coating can be used in the powder coating Powder for a multicolored unstructured coating and / or a powder for one multicolored textured coating can be used.
Die beschichtete Oberfläche kann mindestens teilweise durch eine Folie oder Klebefolie geschützt werden, insbesondere vor mechanischer Beeinträchtigung z.B. während Lagerung, Transport und Weiterverarbeitung. The coated surface can be at least partially covered by a film or Protect adhesive film, especially against mechanical impairment e.g. during storage, transportation and further processing.
Die beschichteten Körper können gegebenenfalls verformt, geschnitten - insbesondere in Längs- oder/und in Querrichtung geschnitten - und gegebenenfalls noch einmal verformt werden, wie z.B. gebörtelt, rollgeformt, tiefgezogen oder/und abgekantet werden.The coated bodies can optionally be deformed, cut - in particular cut lengthways and / or crossways - and if necessary deformed again, e.g. beaded, roll-formed, deep-drawn or / and be folded.
Die nach dem erfindungsgemäßen Verfahren hergestellten Produkte können als Innen- und Außenverkleidungen, Geräteverkleidungen z.B. für Haushaltsgeräte und Kleinelektrogeräte, insbesondere mit dekorierter Außenverkleidung, Lochbleche insbesondere für Lautsprecher und Schallschutzverkleidungen, Raumteiler, Trennwände, Möbelelemente, Regale, Fahrzeug- und Flugzeuginnenverkleidungen wie z.B. Armaturenbretter, Rahmen und Rahmenkonstruktionen, Verblendungen, Beleuchtungskörper verwendet werden.The products produced by the process according to the invention can be used as Internal and external cladding, device cladding e.g. for household appliances and Small electrical appliances, especially with decorated external cladding, perforated sheets especially for loudspeakers and sound insulation panels, room dividers, Partitions, furniture elements, shelves, vehicle and aircraft interior linings such as. Dashboards, frames and frame constructions, facings, Lighting fixtures can be used.
Claims (22)
- Method for producing coated metal surfaces at a coating speed of at least 25 m per minute in the application of at least one pretreatment agent to a cleaned and/or pickled metal surface of a metal strip, characterised in that
at least one pretreatment agent is applied to at least one side of the strip after a cleaning and/or a pickling of the metal surface to be treated, and
at least one lacquer layer is then applied on at least one part of the pretreated surface, in particular on one side of the strip,
the coating produced with a pretreatment agent and not with a lacquer is used instead of a priming layer and pretreatment layer, with the side of the strip not intended for subsequent lacquering being preferably coated with a pretreatment agent containing organic resin,
the side of the strip intended for the subsequent lacquering is coated with at least one pretreatment agent, and
the at least one lacquer layer is applied as a powder lacquer to the pretreated side of the strip intended for the subsequent lacquering and is stoved. - Method according to claim 1, characterised in that the moisture or residual moisture in the applied pretreatment layer is retained up to the lacquering in order to adjust the necessary electrical conductivity of the pretreated surface for the application of the lacquer layer.
- Method according to claim 1 or 2, characterised in that the metal surface before the pretreatment contains aluminium, iron, copper, magnesium, zinc and/or tin and preferably consists of an aluminium alloy, a hot-dip galvanised or electrolytically galvanised iron material, a steel or a full zinc material in the form of strips.
- Method according to one of the preceding claims, characterised in that the cleaning and/or the pickling is carried out by spraying and/or brushing with a cleaning and/or pickling solution or immersion in a bath of this solution.
- Method according to one of the preceding claims, characterised in that the pretreatment agent is applied by spraying and squeezing with a roller or by immersion and squeezing out with a roller, or in the roll-coat process.
- Method according to one of the preceding claims, characterised in that the pretreatment agent is a preparation that contains a polymer dispersion with at least one resin from the group consisting of acrylate, epoxide, phenol, polyester, silicone polyester, polyurethane, styrene and ureaformaldehyde based resin and/or a mixture thereof and/or a mixed polymer.
- Method according to one of the preceding claims, characterised in that the pretreatment agent is a preparation that contains at least one resin in the form of a solution and/or dispersion.
- Method according to one of the preceding claims, characterised in that the pretreatment agent is a preparation that contains, apart from resin(s), at least one inorganic additive in dissolved form and/or as finely divided powder, for example a carbonate, chromate, oxide, phosphate, silicate or sulfate.
- Method according to one of the preceding claims, characterised in that the pretreatment agent is a resin-free preparation that contains aluminium, fluoride, hydrofluoric acid, phosphate, phosphoric acid, trivalent and/or hexavalent chromate, chromic acid, silicate, self-organising molecules, silane, tannin, titanium, zinc and/or zirconium.
- Method according to one of the preceding claims, characterised in that, for the application to a strip, a pretreatment agent is selected for one side of the strip that is different to that selected for the other side, with it being possible for the side that is not intended to be subsequently lacquered to be coated with a pretreatment agent containing organic resin.
- Method according to claim 5, characterised in that the layer applied with the pretreatment agent is either partially dried or completely dried.
- Method according to one of the preceding claims, characterised in that at least one side of the pretreated surface is coated with an organic coating that hardens and/or crosslinks sufficiently in a time of 1 second up to 3 minutes, preferably in a time of 5 seconds up to 2 minutes.
- Method according to claim 12, characterised in that for the coating of the pretreated surface a powder lacquer having good mechanical properties, high scratch resistance, good adhesion and high flexibility as regards forming is applied and stoved.
- Method according to one of the preceding claims, characterised in that the powder lacquer is applied by spraying, fluidised-bed powder sintering and/or powder cloud technology and stoved.
- Method according to one of the preceding claims, characterised in that, after complete drying, the pretreatment layer and/or treatment layer has a layer thickness in the range from 0.1 to 50 µm, preferably in the range from 0.5 to 10 µm, particularly preferably in the range from 1 to 3 µm.
- Method according to one of the preceding claims, characterised in that the stoved lacquer layer after the crosslinking has a layer thickness in the range from 5 to 1000 µm, preferably in the range from 10 to 400 µm, particularly preferably in the range from 15 to 60 µm.
- Method according to one of the preceding claims, characterised in that a single-layer cover lacquer is applied as sole lacquer at high speed.
- Method according to one of the preceding claims, characterised in that a treatment layer that performs the function of a pretreatment and primer is formed with the pretreatment agent.
- Method according to one of the preceding claims, characterised in that a powder for a single-colour unstructured coating, a powder for a multicolour unstructured coating, and/or a powder for a multicolour structured coating is used.
- Method according to one of the preceding claims, characterised in that the coated surface is protected at least partially by a film or adhesive film.
- Method according to one of the preceding claims, characterised in that the coated bodies are optionally shaped or formed, cut - especially in the longitudinal and/or transverse direction - and optionally re-formed, for example beaded, roll-formed, deep-drawn and/or edged.
- Use of the products produced by the method according to claims 1 to 21 as internal and external panelling, equipment panelling, e.g. for domestic appliances and small electrical instruments, in particular with decorated external panelling, perforated metal sheets, especially for loudspeakers and sound insulating cladding, space dividers, partitions, furniture units, shelving, internal panelling for vehicles and aircraft, such as for example dashboards/instrument panels, frame and frame constructions, facing materials and lighting installations.
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE19961411 | 1999-12-17 | ||
DE19961411A DE19961411A1 (en) | 1999-12-17 | 1999-12-17 | Process for the production of coated metal surfaces and their use |
PCT/EP2000/012745 WO2001043888A2 (en) | 1999-12-17 | 2000-12-14 | Method for producing coated metal surfaces and the use of said metal surfaces |
Publications (2)
Publication Number | Publication Date |
---|---|
EP1242193A2 EP1242193A2 (en) | 2002-09-25 |
EP1242193B1 true EP1242193B1 (en) | 2003-08-27 |
Family
ID=7933395
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP00983330A Expired - Lifetime EP1242193B1 (en) | 1999-12-17 | 2000-12-14 | Method for producing coated metal surfaces and the use of said metal surfaces |
Country Status (10)
Country | Link |
---|---|
US (1) | US20030051772A1 (en) |
EP (1) | EP1242193B1 (en) |
CN (1) | CN1409657A (en) |
AT (1) | ATE248032T1 (en) |
AU (1) | AU774014C (en) |
CA (1) | CA2394235A1 (en) |
DE (2) | DE19961411A1 (en) |
ES (1) | ES2203539T3 (en) |
WO (1) | WO2001043888A2 (en) |
ZA (1) | ZA200205289B (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US10125424B2 (en) | 2012-08-29 | 2018-11-13 | Ppg Industries Ohio, Inc. | Zirconium pretreatment compositions containing molybdenum, associated methods for treating metal substrates, and related coated metal substrates |
Families Citing this family (12)
Publication number | Priority date | Publication date | Assignee | Title |
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CN1320163C (en) * | 2003-10-28 | 2007-06-06 | 尚志精密化学股份有限公司 | Electro-plating coating and japanning method |
DE102005045034A1 (en) * | 2005-09-21 | 2007-03-29 | Rasselstein Gmbh | Method for passivating the surface of coated metal strips and device for applying the passive layer to a metal-coated steel strip |
DE102008059014A1 (en) | 2008-05-28 | 2009-12-03 | Basf Coatings Ag | Process for coating metal strips |
JP5079037B2 (en) * | 2010-02-26 | 2012-11-21 | 住友軽金属工業株式会社 | Conductive pre-coated aluminum alloy plate for electrical or electronic equipment housing |
AU2013309269B2 (en) | 2012-08-29 | 2016-03-31 | Ppg Industries Ohio, Inc. | Zirconium pretreatment compositions containing lithium, associated methods for treating metal substrates, and related coated metal substrates |
CN102896082B (en) * | 2012-10-22 | 2014-11-05 | 江苏奥新新能源汽车有限公司 | Coating process |
CN105457872A (en) * | 2015-12-31 | 2016-04-06 | 芜湖市金宇石化设备有限公司 | Coating process of frame |
KR20190043155A (en) | 2016-08-24 | 2019-04-25 | 피피지 인더스트리즈 오하이오 인코포레이티드 | Alkaline compositions for treating metal substrates |
CN107321575B (en) * | 2017-07-03 | 2019-06-07 | 重庆科技学院 | Point welding powdered alloy sized roller applicator |
DE102018209553A1 (en) | 2018-06-14 | 2019-12-19 | Voestalpine Stahl Gmbh | METHOD FOR PRODUCING LACQUER-COATED ELECTRIC TAPES AND LACQUER-COATED ELECTRIC TAPE |
CN109107857A (en) * | 2018-11-08 | 2019-01-01 | 北京星航机电装备有限公司 | A kind of supersonic vehicle body method for coating surface |
FR3135316B1 (en) | 2022-05-06 | 2024-05-03 | Commissariat Energie Atomique | SURFACE TREATMENT METHOD FOR IMPROVING THE PERFORMANCE OF A THERMODYNAMIC SYSTEM WITH ABSORPTION CYCLE |
Family Cites Families (12)
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US3790355A (en) * | 1971-11-18 | 1974-02-05 | Empire Plating Co | Coated metal article and method of coating |
US3961993A (en) * | 1971-11-18 | 1976-06-08 | The Empire Plating Company | Coated metal article and method of coating |
US5279863A (en) * | 1989-10-10 | 1994-01-18 | David A. Lundy | Electrostatic powder coating apparatus and method |
US5059446A (en) * | 1990-02-14 | 1991-10-22 | Armco Inc. | Method of producing plastic coated metal strip |
US5314090A (en) * | 1992-03-23 | 1994-05-24 | Terronics Development Corporation | Material feeder |
US5455080A (en) * | 1992-08-26 | 1995-10-03 | Armco Inc. | Metal substrate with enhanced corrosion resistance and improved paint adhesion |
US5439704A (en) * | 1993-10-27 | 1995-08-08 | Hunter Engineering Company, Inc. | Combined coil and blank powder coating |
DE4409306A1 (en) * | 1994-03-18 | 1995-09-21 | Basf Ag | Process for modifying metal surfaces |
DE19633742A1 (en) * | 1996-08-22 | 1998-02-26 | Sundwiger Eisen Maschinen | Process and installation for applying a coating agent, in particular paint, to a strip of metal, in particular steel, in one pass |
DE19725780A1 (en) * | 1997-06-18 | 1998-12-24 | Metallgesellschaft Ag | Applying plastic to metallic parts |
EA200000323A1 (en) * | 1997-09-17 | 2000-10-30 | Брент Интернэшнл Плс | METHOD AND COMPOSITION TO PREVENT CORROSION OF METAL SUBSTRATES |
GB2334906A (en) * | 1998-03-02 | 1999-09-08 | British Steel Plc | Laminated metal strip |
-
1999
- 1999-12-17 DE DE19961411A patent/DE19961411A1/en not_active Withdrawn
-
2000
- 2000-12-14 CA CA002394235A patent/CA2394235A1/en not_active Abandoned
- 2000-12-14 ES ES00983330T patent/ES2203539T3/en not_active Expired - Lifetime
- 2000-12-14 US US10/148,814 patent/US20030051772A1/en not_active Abandoned
- 2000-12-14 WO PCT/EP2000/012745 patent/WO2001043888A2/en active IP Right Grant
- 2000-12-14 AT AT00983330T patent/ATE248032T1/en not_active IP Right Cessation
- 2000-12-14 AU AU20104/01A patent/AU774014C/en not_active Ceased
- 2000-12-14 EP EP00983330A patent/EP1242193B1/en not_active Expired - Lifetime
- 2000-12-14 DE DE50003490T patent/DE50003490D1/en not_active Expired - Lifetime
- 2000-12-14 CN CN00817111A patent/CN1409657A/en active Pending
-
2002
- 2002-07-02 ZA ZA200205289A patent/ZA200205289B/en unknown
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US10125424B2 (en) | 2012-08-29 | 2018-11-13 | Ppg Industries Ohio, Inc. | Zirconium pretreatment compositions containing molybdenum, associated methods for treating metal substrates, and related coated metal substrates |
US10920324B2 (en) | 2012-08-29 | 2021-02-16 | Ppg Industries Ohio, Inc. | Zirconium pretreatment compositions containing molybdenum, associated methods for treating metal substrates, and related coated metal substrates |
Also Published As
Publication number | Publication date |
---|---|
ES2203539T3 (en) | 2004-04-16 |
EP1242193A2 (en) | 2002-09-25 |
ZA200205289B (en) | 2003-07-28 |
WO2001043888A3 (en) | 2001-12-06 |
DE19961411A1 (en) | 2001-06-21 |
WO2001043888A2 (en) | 2001-06-21 |
AU2010401A (en) | 2001-06-25 |
CA2394235A1 (en) | 2001-06-21 |
US20030051772A1 (en) | 2003-03-20 |
ATE248032T1 (en) | 2003-09-15 |
AU774014B2 (en) | 2004-06-10 |
AU774014C (en) | 2005-04-28 |
DE50003490D1 (en) | 2003-10-02 |
CN1409657A (en) | 2003-04-09 |
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