EP1198617A1 - Method for applying products without rinsing on moving metal strips - Google Patents

Method for applying products without rinsing on moving metal strips

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Publication number
EP1198617A1
EP1198617A1 EP00944008A EP00944008A EP1198617A1 EP 1198617 A1 EP1198617 A1 EP 1198617A1 EP 00944008 A EP00944008 A EP 00944008A EP 00944008 A EP00944008 A EP 00944008A EP 1198617 A1 EP1198617 A1 EP 1198617A1
Authority
EP
European Patent Office
Prior art keywords
solution
metal strips
treatment
roller
fleece
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.)
Granted
Application number
EP00944008A
Other languages
German (de)
French (fr)
Other versions
EP1198617B1 (en
Inventor
Jörg Riesop
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.)
Henkel AG and Co KGaA
Original Assignee
Henkel AG and Co KGaA
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 Henkel AG and Co KGaA filed Critical Henkel AG and Co KGaA
Publication of EP1198617A1 publication Critical patent/EP1198617A1/en
Application granted granted Critical
Publication of EP1198617B1 publication Critical patent/EP1198617B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • 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
    • C23C22/73—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 characterised by the process
    • 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
    • B05D1/00—Processes for applying liquids or other fluent materials
    • B05D1/28—Processes for applying liquids or other fluent materials performed by transfer from the surfaces of elements carrying the liquid or other fluent material, e.g. brushes, pads, rollers
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05C—APPARATUS FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05C1/00—Apparatus in which liquid or other fluent material is applied to the surface of the work by contact with a member carrying the liquid or other fluent material, e.g. a porous member loaded with a liquid to be applied as a coating
    • B05C1/04—Apparatus in which liquid or other fluent material is applied to the surface of the work by contact with a member carrying the liquid or other fluent material, e.g. a porous member loaded with a liquid to be applied as a coating for applying liquid or other fluent material to work of indefinite length
    • B05C1/08—Apparatus in which liquid or other fluent material is applied to the surface of the work by contact with a member carrying the liquid or other fluent material, e.g. a porous member loaded with a liquid to be applied as a coating for applying liquid or other fluent material to work of indefinite length using a roller or other rotating member which contacts the work along a generating line
    • B05C1/0808—Details thereof, e.g. surface characteristics

Definitions

  • the invention is in the field of corrosion-protective surface treatment of metal strips. It relates in particular to the application of so-called no-rinse products, that is, products that are dried immediately after application without an intermediate rinse with water. This means that all non-volatile components of the treatment solution used and the reaction products with the metal surface remain on the metal.
  • An advantage of this technique is that there is no product-contaminated rinse water that has to be disposed of in a complex manner.
  • the treatment solutions are applied to the metal belts, known as chemcoaters or rollcoaters, using rollers with a hard surface.
  • spray / dip squeeze technology in which the surface is briefly brought into contact with the treatment solution to be applied by spraying or dipping, immediately after which the treatment solution is squeezed off by means of rollers and then dried.
  • a disadvantage of the chemcoater is the high investment and operating costs.
  • a disadvantage of the spray / dip squeeze process is a wet film thickness which is dependent on the running time of the squeeze roller, with different film layers also being obtained when the width changes in the edge regions. The coating of the tape is therefore uneven. Since the wet film is still very thin after being squeezed off (generally thinner than 2 ⁇ m), small changes in the wet film thickness have a very noticeable effect on the layer coverage achieved.
  • the object of the invention is to provide an improved application system for no-rinse products which does not have the disadvantages mentioned above.
  • the invention relates to a process for the chemical treatment of metal strips, wherein a treatment liquid is applied to one or both sides of the surface of the metal strips with an application roller and dried without intermediate rinsing, characterized in that a fleece roller is used as the application roller.
  • Fleece rollers referred to as soft rolls in the Anglo-Saxon language area, are currently used in the belt industry as squeeze rollers.
  • the surface of these rollers consists of a soft layer, usually made of chemical-resistant random fibers. Examples are polyamide (nylon) fibers or polypropylene fibers. In general, all fibers can be used that have a sufficient absorption volume and sufficient resistance to strongly acidic or alkaline solutions. In the method according to the invention, these rollers can rotate in opposite or parallel directions with the metal strip.
  • the gap between the fleece rollers is preferably adjusted as a function of the sheet thickness so that the treatment liquid is applied to the surface of the metal strips with a wet film thickness in the range from 1 to 10 ⁇ m. This is the case, for example, with a gap width between approximately 0.3 and approximately 0.8 mm.
  • the roller gap is preferably set such that a wet film thickness in the range from 2 to 6 ⁇ m (corresponding to ml / m 2 ) is set on the surface of the metal strips.
  • treatment solutions which are suitable for no-rinse processes can be applied by the process according to the invention.
  • these treatment liquids are either acidic (pH between 0 and 7) or alkaline (pH between 7 and 14).
  • the composition of the treatment solutions is usually chosen so that a chemical reaction with the metal surface occurs.
  • a large number of such treatment solutions are known in the prior art. Examples include: Phosphating solutions: acidified, phosphoric acid-containing solutions that produce a crystalline or amorphous metal phosphate layer on the metal surface.
  • These solutions usually contain zinc ions as cations, often together with manganese and / or nickel ions.
  • Chromating solutions acidic solutions containing Cr (VI) ions and often also Cr (III) ions.
  • Acidic or alkaline passivation solutions aqueous solutions which usually contain transition metal ions and which, after drying, produce a corrosion-protecting amorphous (mixed) oxide layer.
  • Treatment solutions based on complex fluorides usually acidic solutions of, for example, hexafluorozirconic acid, hexafluorotitanic acid, hexafluorosilicic acid and their salts.
  • Solutions or dispersions of organic film formers for example polyacrylates.
  • the solution can contain inorganic reactive components such as complex fluorides. This creates an inorganic / organic-polymer mixed layer.
  • Such treatment solutions are currently used for the treatment of different substrates in conventional application processes. They are adjusted to the metal surface to be treated and are suitable, for example, for the treatment of steel, galvanized or alloy-galvanized steel, of alloy-aluminized steel and for the treatment of aluminum and its alloys. Accordingly, the method according to the invention can be used using treatment liquids of this type for the treatment of tapes made from the materials mentioned.
  • the treatment solution can be applied to the surface of the fleece roller in different ways. For example, it is possible to spray them on spray on the surface of the fleece roller. Alternatively, it can be transferred from a storage container to the surface of the fleece roller via scoop rollers.
  • treatment liquid is applied to the surface of the fleece roller via the interior of the fleece roller.
  • the wall of the fleece roller can be made permeable to liquid. Treatment liquid supplied into the interior of the fleece roller, for example through a hollow roller shaft, can therefore reach the surface of the roller through holes in the wall of the roller.
  • the treatment solution is preferably applied to the metal strips at a temperature in the range from about 15 to about 40 ° C., in particular in the range between 20 and 30 ° C.
  • the metal strips are then dried without intermediate rinsing.
  • the time between the application of the treatment liquid by the fleece roller and the start of drying should not be less than 1 second and not longer than 15 seconds.
  • the drying itself can be carried out, for example, in a forced air oven, as is also the case with conventional no-rinse processes.
  • the fleece roller is designed so that the treatment liquid is supplied to the surface through its interior, the rinsing is preferably also carried out via the interior of the fleece roller.
  • the process according to the invention has the advantage that even with changing bandwidths, a uniform application of the treatment liquid over the entire bandwidth is made possible. This prevents different areas of the strips from being coated to different extents.

Landscapes

  • Chemical & Material Sciences (AREA)
  • Metallurgy (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Mechanical Engineering (AREA)
  • General Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Application Of Or Painting With Fluid Materials (AREA)
  • Chemical Treatment Of Metals (AREA)
  • Treatment Of Fiber Materials (AREA)
  • Treatments For Attaching Organic Compounds To Fibrous Goods (AREA)
  • Cleaning And De-Greasing Of Metallic Materials By Chemical Methods (AREA)
  • Catalysts (AREA)

Abstract

The invention concerns a method for chemical treatment of metal strips which consists in applying unilaterally or bilaterally a treating liquid on the surface of metal strips using a roller coater, and in drying said liquid without intermediate rinsing. Said method is characterised in that it consists in using a lap roll as roller coater. The treating liquid is preferably a phosphating solution, a chromating solution, an acid or alkaline passivating solution, a treating solution based on complex fluorides or a solution or dispersion of an organic film-forming agent.

Description

"Verfahren zum Auftrag von No-Rinse-Produkten auf laufende Metallbänder""Process for applying no-rinse products to running metal strips"
Die Erfindung liegt auf dem Gebiet der korrosionsschützenden Oberflächenbehandlung von Metallbändern. Sie betrifft speziell den Auftrag sogenannter No- Rinse-Produkte, also Produkte, die nach dem Auftragen sofort eingetrocknet werden, ohne daß eine Zwischenspülung mit Wasser erfolgt. Dies bedeutet, daß alle nicht flüchtigen Komponenten der verwendeten Behandlungslösung sowie die Reaktionsprodukte mit der Metalloberfläche auf dem Metall verbleiben. Ein Vorteil dieser Technik besteht darin, daß hierbei kein produktbelastetes Spülwasser anfällt, das aufwendig entsorgt werden muß. Herkömmlicherweise werden die Behandlungslösungen über Walzen mit einer harten Oberfläche auf die Metallbänder aufgetragen, die als Chemcoater oder Rollcoater bezeichnet werden. Eine Alternative hierzu ist die sogenannte Spray/Dip-Squeeze-Technologie, bei welcher die Oberfläche durch Besprühen oder Eintauchen kurz mit der aufzutragenden Behandlungslösung in Kontakt gebracht wird, unmittelbar worauf die Behandlungslösung mittels Walzen abgequetscht und anschließend eingetrocknet wird.The invention is in the field of corrosion-protective surface treatment of metal strips. It relates in particular to the application of so-called no-rinse products, that is, products that are dried immediately after application without an intermediate rinse with water. This means that all non-volatile components of the treatment solution used and the reaction products with the metal surface remain on the metal. An advantage of this technique is that there is no product-contaminated rinse water that has to be disposed of in a complex manner. Traditionally, the treatment solutions are applied to the metal belts, known as chemcoaters or rollcoaters, using rollers with a hard surface. An alternative to this is the so-called spray / dip squeeze technology, in which the surface is briefly brought into contact with the treatment solution to be applied by spraying or dipping, immediately after which the treatment solution is squeezed off by means of rollers and then dried.
Ein Nachteil des Chemcoaters sind die hohen Investitions- und Betriebskosten. Ein Nachteil des Spray/Dip-Squeeze-Verfahrens ist eine von der Laufzeit der Abquetschwalze abhängige Naßfilmdicke, wobei zusätzlich bei Breitenwechsel in den Randbereichen unterschiedliche Filmauflagen erhalten werden. Die Beschichtung des Bandes wird damit ungleichmäßig. Da weiterhin der Naßfilm nach dem Abquetschen sehr dünn ist (in der Regel dünner als 2 μm), machen sich geringe Änderungen in der Naßfilmdicke sehr stark in der erzielten Schichtauflage bemerkbar.A disadvantage of the chemcoater is the high investment and operating costs. A disadvantage of the spray / dip squeeze process is a wet film thickness which is dependent on the running time of the squeeze roller, with different film layers also being obtained when the width changes in the edge regions. The coating of the tape is therefore uneven. Since the wet film is still very thin after being squeezed off (generally thinner than 2 μm), small changes in the wet film thickness have a very noticeable effect on the layer coverage achieved.
Der Erfindung liegt die Aufgabe zugrunde, ein verbessertes Auftragssystem für No-Rinse-Produkte zur Verfügung zu stellen, das die vorstehend genannten Nachteile nicht aufweist. Gegenstand der Erfindung ist ein Verfahren zur chemischen Behandlung von Metallbändern, wobei man eine Behandlungsflüssigkeit mit einer Auftragswalze ein- oder beidseitig auf die Oberfläche der Metallbänder aufträgt und ohne Zwischenspülung eintrocknet, dadurch gekennzeichnet, daß man als Auftragswalze eine Vlieswalze verwendet.The object of the invention is to provide an improved application system for no-rinse products which does not have the disadvantages mentioned above. The invention relates to a process for the chemical treatment of metal strips, wherein a treatment liquid is applied to one or both sides of the surface of the metal strips with an application roller and dried without intermediate rinsing, characterized in that a fleece roller is used as the application roller.
Vlieswalzen, im angelsächsischen Sprachraum als soft rolls bezeichnet, werden derzeit in der Bandindustrie als Abquetschwalzen eingesetzt. Die Oberfläche dieser Walzen besteht aus einer weichen Auflage, in der Regel aus chemikalienbeständigen Wirrfaserstoffen. Beispiele sind Polyamid(Nylon)- Faserstoffe oder Polypropylen-Faserstoffe. Allgemein können alle Fasern eingesetzt werden, die ein ausreichendes Aufnahmevolumen und eine ausreichende Beständigkeit gegen stark saure oder alkalische Lösungen haben. Im erfindungsgemäßen Verfahren können sich diese Walzen gegenläufig oder mitläufig mit dem Metallband drehen.Fleece rollers, referred to as soft rolls in the Anglo-Saxon language area, are currently used in the belt industry as squeeze rollers. The surface of these rollers consists of a soft layer, usually made of chemical-resistant random fibers. Examples are polyamide (nylon) fibers or polypropylene fibers. In general, all fibers can be used that have a sufficient absorption volume and sufficient resistance to strongly acidic or alkaline solutions. In the method according to the invention, these rollers can rotate in opposite or parallel directions with the metal strip.
Vorzugsweise stellt man den Spalt zwischen den Vlieswalzen in Abhängigkeit von der Blechdicke so ein, daß durch die Vlieswalze die Behandlungsflüssigkeit mit einer Naßfilmdicke im Bereich von 1 bis 10 μm auf die Oberfläche der Metallbänder aufgetragen wird. Dies ist beispielsweise bei einer Spaltbreite zwischen etwa 0,3 und etwa 0,8 mm der Fall. Vorzugsweise wird der Walzenspalt so eingestellt, daß auf der Oberfläche der Metallbänder eine Naßfilmdicke im Bereich von 2 bis 6 μm (entsprechend ml/m2) eingestellt wird.The gap between the fleece rollers is preferably adjusted as a function of the sheet thickness so that the treatment liquid is applied to the surface of the metal strips with a wet film thickness in the range from 1 to 10 μm. This is the case, for example, with a gap width between approximately 0.3 and approximately 0.8 mm. The roller gap is preferably set such that a wet film thickness in the range from 2 to 6 μm (corresponding to ml / m 2 ) is set on the surface of the metal strips.
Nach dem erfindungsgemäßen Verfahren sind alle Behandlungslösungen auftragbar, die für No-Rinse-Verfahren geeignet sind. In der Regel sind diese Behandlungsflüssigkeiten entweder sauer (pH-Wert zwischen 0 und 7) oder alkalisch (pH-Wert zwischen 7 und 14) eingestellt. Die Zusammensetzung der Behandlungslösungen wird in der Regel so gewählt, daß eine chemische Reaktion mit der Metalloberfläche eintritt. Derartige Behandlungslösugen sind in großer Anzahl im Stand der Technik bekannt. Beispielsweise genannt seien: Phosphatierungslösungen: sauer eingestellte, Phosphorsäure-haltige Lösungen, die auf der Metalloberfläche eine kristalline oder amorphe Metallphosphatschicht erzeugen. Als Kationen enthalten diese Lösungen in der Regel Zinkionen, häufig zusammen mit Mangan- und/oder Nickelionen.All treatment solutions which are suitable for no-rinse processes can be applied by the process according to the invention. As a rule, these treatment liquids are either acidic (pH between 0 and 7) or alkaline (pH between 7 and 14). The composition of the treatment solutions is usually chosen so that a chemical reaction with the metal surface occurs. A large number of such treatment solutions are known in the prior art. Examples include: Phosphating solutions: acidified, phosphoric acid-containing solutions that produce a crystalline or amorphous metal phosphate layer on the metal surface. These solutions usually contain zinc ions as cations, often together with manganese and / or nickel ions.
Chromatierungslösungen: sauer eingestellte Lösungen, die Cr(VI)-lonen und häufig zusätzlich Cr(lll)-lonen enthalten.Chromating solutions: acidic solutions containing Cr (VI) ions and often also Cr (III) ions.
Saure oder alkalische Passivierungslösungen: wäßrige Lösungen, die in der Regel Übergangsmetall-Ionen enthalten und die nach dem Eintrocknen eine korrosions- schützende amorphe (Misch-)Oxidschicht erzeugen.Acidic or alkaline passivation solutions: aqueous solutions which usually contain transition metal ions and which, after drying, produce a corrosion-protecting amorphous (mixed) oxide layer.
Behandlungslösungen auf Basis komplexer Fluoride: in der Regel sauer eingestellte Lösungen von beispielsweise Hexafluorozirkonsäure, Hexafluorotitan- säure, Hexafluorokieselsäure sowie jeweils deren Salzen.Treatment solutions based on complex fluorides: usually acidic solutions of, for example, hexafluorozirconic acid, hexafluorotitanic acid, hexafluorosilicic acid and their salts.
Lösungen oder Dispersionen von organischen Filmbildnern, beispielsweise von Polyacrylaten. Dabei kann die Lösung zusätzlich zu den Filmbildnern anorganische reaktive Komponenten wie beispielsweise komplexe Fluoride enthalten. Hierdurch wird eine anorganisch/organisch-polymere Mischschicht erzeugt.Solutions or dispersions of organic film formers, for example polyacrylates. In addition to the film formers, the solution can contain inorganic reactive components such as complex fluorides. This creates an inorganic / organic-polymer mixed layer.
Solche Behandlungslösungen werden derzeit zur Behandlung unterschiedlicher Substrate in konventionellen Auftragsverfahren eingesetzt. Sie sind auf die zu behandelnde Metalloberfläche eingestellt und beispielsweise zur Behandlung von Stahl, verzinktem oder legierungsverzinktem Stahl, von legierungsaluminiertem Stahl sowie zur Behandlung von Aluminium und dessen Legierungen geeignet. Demgemäß kann das erfindungsgemäße Verfahren unter Verwendung derartiger Behandlungsflüssigkeiten zur Behandlung von Bändern aus den genannten Materialien eingesetzt werden.Such treatment solutions are currently used for the treatment of different substrates in conventional application processes. They are adjusted to the metal surface to be treated and are suitable, for example, for the treatment of steel, galvanized or alloy-galvanized steel, of alloy-aluminized steel and for the treatment of aluminum and its alloys. Accordingly, the method according to the invention can be used using treatment liquids of this type for the treatment of tapes made from the materials mentioned.
Die Behandlungslösung kann auf unterschiedliche Weise auf die Oberfläche der Vlieswalze aufgebracht werden. Beispielsweise ist es möglich, sie über Düsen auf die Oberfläche der Vlieswalze aufzusprühen. Alternativ kann sie über Schöpfwalzen aus einem Vorratsbehälter auf die Oberfläche der Vlieswalze übertragen werden.The treatment solution can be applied to the surface of the fleece roller in different ways. For example, it is possible to spray them on spray on the surface of the fleece roller. Alternatively, it can be transferred from a storage container to the surface of the fleece roller via scoop rollers.
Eine Alternative hierzu besteht darin, daß die Behandlungsflüssigkeit über den Innenraum der Vlieswalze auf die Oberfläche der Vlieswalze aufgebracht wird. Dies ist möglich, weil die Wandung der Vlieswalze flüssigkeitsdurchlässig ausgeführt sein kann. In das Innere der Vlieswalze zugeführte Behandlungsflüssigkeit, beispielsweise durch einen hohlen Walzenschaft, kann daher durch Löcher in der Wand der Walze auf deren Oberfläche gelangen.An alternative to this is that the treatment liquid is applied to the surface of the fleece roller via the interior of the fleece roller. This is possible because the wall of the fleece roller can be made permeable to liquid. Treatment liquid supplied into the interior of the fleece roller, for example through a hollow roller shaft, can therefore reach the surface of the roller through holes in the wall of the roller.
Vorzugsweise wird die Behandlungslösung mit einer Temperatur im Bereich von etwa 15 bis etwa 40 °C, insbesondere im Bereich zwischen 20 und 30 °C, auf die Metallbänder aufgetragen. Anschließend werden die Metallbänder ohne Zwischenspülung getrocknet. Dabei sollte die Zeit zwischen dem Auftrag der Behandlungslfüssigkeit durch die Vlieswalze und dem Beginn der Trocknung nicht kürzer als 1 Sekunde und nicht länger als 15 Sekunden sein. Die Trocknung selbst kann beispielsweise in einem Umluftofen erfolgen, wie es auch bei herkömmlichen No-Rinse-Verfahren der Fall ist.The treatment solution is preferably applied to the metal strips at a temperature in the range from about 15 to about 40 ° C., in particular in the range between 20 and 30 ° C. The metal strips are then dried without intermediate rinsing. The time between the application of the treatment liquid by the fleece roller and the start of drying should not be less than 1 second and not longer than 15 seconds. The drying itself can be carried out, for example, in a forced air oven, as is also the case with conventional no-rinse processes.
Bei einer Unterbrechung der Produktion ist es empfehlenswert, auf der Vlieswalze noch verbliebene Behandlungsflüssigkeit abzuspülen. Dies kann beispielsweise durch Absprühen mit Wasser erfolgen. Ist die Vlieswalze so ausgeführt, daß die Behandlungsflüssigkeit durch ihren Innenraum auf die Oberfläche zugeführt wird, führt man die Spülung vorzugsweise ebenfalls über den Innenraum der Vlieswalze durch.If production is interrupted, it is advisable to rinse off any remaining treatment liquid on the fleece roller. This can be done, for example, by spraying with water. If the fleece roller is designed so that the treatment liquid is supplied to the surface through its interior, the rinsing is preferably also carried out via the interior of the fleece roller.
Das erfindungsgemäße Verfahren hat den Vorteil, daß auch bei wechselnden Bandbreiten ein gleichmäßiger Auftrag der Behandlungsflüssigkeit über die gesamte Bandbreite ermöglicht wird. Damit wird vermieden, daß verschiedene Bereiche der Bänder unterschiedlich stark beschichtet werden. AusführungsbeispieleThe process according to the invention has the advantage that even with changing bandwidths, a uniform application of the treatment liquid over the entire bandwidth is made possible. This prevents different areas of the strips from being coated to different extents. embodiments
Mit einer Polypropylen-Vlieswalze der Firma Thomas Rolls sind folgende Aufträge gemacht worden. Die Dicke der behandelten Bleche betrug 0,75 mm:The following orders have been made with a polypropylene fleece roller from Thomas Rolls. The thickness of the treated sheets was 0.75 mm:

Claims

Patentansprüche claims
1. Verfahren zur chemischen Behandlung von Metallbändern, wobei man eine Behandlungsflüssigkeit mit einer Auftragswalze ein- oder beidseitig auf die Oberfläche der Metallbänder aufträgt und ohne Zwischenspülung eintrocknet, dadurch gekennzeichnet, daß man als Auftragswalze eine Vlieswalze verwendet.1. A process for the chemical treatment of metal strips, wherein a treatment liquid with an application roller is applied to one or both sides of the surface of the metal strips and dries without intermediate rinsing, characterized in that a fleece roller is used as the application roller.
2. Verfahren nach Anspruch 1 , dadurch gekennzeichnet, daß man die Behandlungsflüssigkeit mit einer Naßfilmdicke im Bereich von 1 bis 10 μm auf die Oberfläche der Metallbänder aufträgt.2. The method according to claim 1, characterized in that the treatment liquid is applied with a wet film thickness in the range of 1 to 10 microns on the surface of the metal strips.
3. Verfahren nach einem oder beiden der Ansprüche 1 und 2, dadurch gekennzeichnet, daß es sich bei der Behandlungsflüssigkeit um eine Phosphatierungslösung, eine Chromatierungslösung, eine saure oder alkalische Passivierungslösung, eine Behandlungslösung auf Basis komplexer Fluoride oder um eine Lösung oder Dispersion eines organischen Filmbildners handelt.3. The method according to one or both of claims 1 and 2, characterized in that the treatment liquid is a phosphating solution, a chromating solution, an acidic or alkaline passivation solution, a treatment solution based on complex fluorides or a solution or dispersion of an organic film former is.
4. Verfahren nach einem oder mehreren der Ansprüche 1 bis 3, dadurch gekennzeichnet, daß die Behandlungsflüssigkeit durch Aufsprühen oder über Schöpfwalzen auf die Vlieswalze aufgebracht wird.4. The method according to one or more of claims 1 to 3, characterized in that the treatment liquid is applied to the fleece roller by spraying or via scoop rollers.
5. Verfahren nach einem oder mehreren der Ansprüche 1 bis 3, dadurch gekennzeichnet, daß die Behandlungsflüssigkeit über den Innenraum der Vlieswalze auf die Oberfläche der Vlieswalze aufgebracht wird.5. The method according to one or more of claims 1 to 3, characterized in that the treatment liquid is applied to the surface of the fleece roller over the interior of the fleece roller.
6. Verfahren nach einem oder mehreren der Ansprüche 1 bis 5, dadurch gekennzeichnet, daß die Behandlungslösung mit einer Temperatur im Bereich von 15 bis 40 °C, vorzugsweise zwischen 20 und 30 °C, auf die Metallbänder aufgetragen wird. 6. The method according to one or more of claims 1 to 5, characterized in that the treatment solution is applied to the metal strips at a temperature in the range from 15 to 40 ° C, preferably between 20 and 30 ° C.
EP00944008A 1999-07-15 2000-07-06 Method for applying products without rinsing on moving metal strips Expired - Lifetime EP1198617B1 (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE19933186A DE19933186A1 (en) 1999-07-15 1999-07-15 Process for applying no-rinse products to running metal belts
DE19933186 1999-07-15
PCT/EP2000/006398 WO2001006037A1 (en) 1999-07-15 2000-07-06 Method for applying products without rinsing on moving metal strips

Publications (2)

Publication Number Publication Date
EP1198617A1 true EP1198617A1 (en) 2002-04-24
EP1198617B1 EP1198617B1 (en) 2003-03-05

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EP00944008A Expired - Lifetime EP1198617B1 (en) 1999-07-15 2000-07-06 Method for applying products without rinsing on moving metal strips

Country Status (8)

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EP (1) EP1198617B1 (en)
AT (1) ATE233831T1 (en)
AU (1) AU5825800A (en)
CA (1) CA2378935A1 (en)
DE (2) DE19933186A1 (en)
TR (1) TR200103548T2 (en)
TW (1) TW469179B (en)
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DE10115244A1 (en) * 2001-03-28 2002-10-02 Henkel Kgaa Post-passivation of a phosphated metal surface using the belt process
WO2004074511A1 (en) * 2003-02-21 2004-09-02 Garvan Institute Of Medical Research Diagnosis and treatment of baff-mediated autoimmune diseases and cancer
DE10357912A1 (en) * 2003-12-11 2005-07-14 Lutz Freyer Lubricating device for lubricating sheet metal strips
DE102016203771A1 (en) 2016-03-08 2017-09-14 Henkel Ag & Co. Kgaa Fluoride-free zirconium-based metal pretreatment for passivation

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DE19933186A1 (en) 2001-01-18
WO2001006037A1 (en) 2001-01-25
TR200103548T2 (en) 2002-06-21
EP1198617B1 (en) 2003-03-05
ATE233831T1 (en) 2003-03-15
CA2378935A1 (en) 2001-01-25
TW469179B (en) 2001-12-21
DE50001405D1 (en) 2003-04-10
AU5825800A (en) 2001-02-05

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