EP1198617A1 - Procede d'application de produits sans rin age sur des bandes metalliques courantes - Google Patents

Procede d'application de produits sans rin age sur des bandes metalliques courantes

Info

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)
English (en)
Other versions
EP1198617B1 (fr
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/fr
Application granted granted Critical
Publication of EP1198617B1 publication Critical patent/EP1198617B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

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)
  • Catalysts (AREA)
  • Cleaning And De-Greasing Of Metallic Materials By Chemical Methods (AREA)
  • Treatments For Attaching Organic Compounds To Fibrous Goods (AREA)
  • Treatment Of Fiber Materials (AREA)
EP00944008A 1999-07-15 2000-07-06 Procede d'application de produits sans rincage sur des bandes metalliques courantes Expired - Lifetime EP1198617B1 (fr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE19933186A DE19933186A1 (de) 1999-07-15 1999-07-15 Verfahren zum Auftrag von No-Rinse-Produkten auf laufende Metallbänder
DE19933186 1999-07-15
PCT/EP2000/006398 WO2001006037A1 (fr) 1999-07-15 2000-07-06 Procede d'application de produits sans rinçage sur des bandes metalliques courantes

Publications (2)

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

Family

ID=7914900

Family Applications (1)

Application Number Title Priority Date Filing Date
EP00944008A Expired - Lifetime EP1198617B1 (fr) 1999-07-15 2000-07-06 Procede d'application de produits sans rincage sur des bandes metalliques courantes

Country Status (8)

Country Link
EP (1) EP1198617B1 (fr)
AT (1) ATE233831T1 (fr)
AU (1) AU5825800A (fr)
CA (1) CA2378935A1 (fr)
DE (2) DE19933186A1 (fr)
TR (1) TR200103548T2 (fr)
TW (1) TW469179B (fr)
WO (1) WO2001006037A1 (fr)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10027444A1 (de) * 2000-06-02 2002-02-14 Basf Coatings Ag Bandbeschichtungsverfahren mit Pulverlackdispersionen (Pulverslurries)
DE10115244A1 (de) * 2001-03-28 2002-10-02 Henkel Kgaa Nachpassivierung einer phosphatierten Metalloberfläche im Bandverfahren
WO2004074511A1 (fr) * 2003-02-21 2004-09-02 Garvan Institute Of Medical Research Diagnostic et traitement des maladies auto-immunes mediees par baff et du cancer
DE10357912A1 (de) * 2003-12-11 2005-07-14 Lutz Freyer Schmiervorrichtung zum Schmieren von Blechstreifen
DE102016203771A1 (de) 2016-03-08 2017-09-14 Henkel Ag & Co. Kgaa Fluorid-freie Zirkonium-basierte Metallvorbehandlung zur Passivierung

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5425500B2 (fr) * 1972-11-22 1979-08-28
GB2018632B (en) * 1978-04-13 1982-07-07 Bicc Ltd Sheet processing
JPH01149972A (ja) * 1987-12-07 1989-06-13 Kobe Steel Ltd クロメート処理鋼板の製造方法
US5116672A (en) * 1990-02-05 1992-05-26 Sermatech International, Inc. Organic coatings with ion reactive pigments especially for active metals

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See references of WO0106037A1 *

Also Published As

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

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