EP2718479B1 - Procédé de production d'une bande d'aluminium ou d'alliage d'aluminium dotée d'une laque de thermoscellage sur une première surface et d'une laque cuite au four à base d'époxyde sur la seconde surface préalablement revêtue d'une couche de conversion exempte de chrome - Google Patents

Procédé de production d'une bande d'aluminium ou d'alliage d'aluminium dotée d'une laque de thermoscellage sur une première surface et d'une laque cuite au four à base d'époxyde sur la seconde surface préalablement revêtue d'une couche de conversion exempte de chrome Download PDF

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Publication number
EP2718479B1
EP2718479B1 EP12725321.9A EP12725321A EP2718479B1 EP 2718479 B1 EP2718479 B1 EP 2718479B1 EP 12725321 A EP12725321 A EP 12725321A EP 2718479 B1 EP2718479 B1 EP 2718479B1
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EP
European Patent Office
Prior art keywords
strip
solution
conversion coating
acid
continuous
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.)
Active
Application number
EP12725321.9A
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German (de)
English (en)
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EP2718479A1 (fr
Inventor
Jürg Lutz
René Segerer
Hans Schlager
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.)
Amcor Flexibles Kreuzlingen AG
Original Assignee
Amcor Flexibles Kreuzlingen AG
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Priority to PL12725321T priority Critical patent/PL2718479T3/pl
Priority to EP12725321.9A priority patent/EP2718479B1/fr
Publication of EP2718479A1 publication Critical patent/EP2718479A1/fr
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Publication of EP2718479B1 publication Critical patent/EP2718479B1/fr
Priority to HRP20180845TT priority patent/HRP20180845T1/hr
Active legal-status Critical Current
Anticipated expiration legal-status Critical

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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
    • C23C22/82—After-treatment
    • C23C22/83—Chemical after-treatment
    • 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
    • C23C22/02—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 non-aqueous solutions
    • 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
    • C23C22/06—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 using aqueous acidic solutions with pH less than 6
    • C23C22/34—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 using aqueous acidic solutions with pH less than 6 containing fluorides or complex fluorides
    • 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
    • C23C22/06—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 using aqueous acidic solutions with pH less than 6
    • C23C22/40—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 using aqueous acidic solutions with pH less than 6 containing molybdates, tungstates or vanadates
    • C23C22/44—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 using aqueous acidic solutions with pH less than 6 containing molybdates, tungstates or vanadates containing also fluorides or complex fluorides
    • 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
    • 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
    • C23C22/74—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 for obtaining burned-in conversion coatings
    • 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
    • C23C22/76—Applying the liquid by spraying

Definitions

  • the invention relates to a method of producing an aluminium or aluminium alloy strip with a heat-seal lacquer on a first surface and an epoxide based stove lacquer on the second surface.
  • the invention relates to the preparation of cleaned surfaces with good adhesion properties of the aforementioned organic coatings on aluminium or aluminium alloy strips intended for the manufacturing of lacquered and deep-drawn capsules closed with a heat-sealed membrane lid for packaging portions of coffee.
  • rinse and no-rinse processes are generally known in the chemical treatment of metal surfaces, for example for the subsequent application of paints, adhesives and/or plastics.
  • the metal surfaces are freed from oil, dirt and other residues in a first stage. Any residues of chemicals from this first stage are removed by rinsing with water.
  • the clean metal surface is wetted with an aqueous bath solution which is rinsed off.
  • the non-rinse process the clean metal surface is wetted with an aqueous bath solution which is not rinsed off, but instead is dried in situ on the metal surface and, in the process, is converted into a solid film of the bath ingredients.
  • Coatings such as these can significantly improve the surface quality of covering layers subsequently applied, particularly with respect to corrosion control and adhesion.
  • treatment solutions containing hexavalent chromium (“yellow chromating") were often proposed in the extensive relevant prior art literature.
  • hexavalent chromium yellow chromating
  • these processes or rather the rinsing waters accumulating therein require expensive wastewater treatment.
  • Even processes which only use trivalent chromium were not entirely satisfactory on account of increasing demands for the complete absence of chromium.
  • WO-A-92/07973 describes a chromium-free treatment process for aluminum which uses 0.01 to around 18% by weight of H 2 ZrF 6 and 0.01 to around 10% by weight of a 3-(N-C 1-4 -alkyl-N-2-hydroxyethylaminomethyl)-4-hydroxystyrene polymer as essential components in the form of an acidic aqueous solution.
  • DE-A-43 17 217 describes a process for the pretreatment of surfaces of aluminum or its alloys before a second conversion treatment for permanent corrosion control, in which the surfaces are contacted with acidic aqueous treatment solutions which contain complex fluorides of the elements boron, silicon, titanium, zirconium or hafnium either individually or in admixture with one another in concentrations of the fluoroanions of, in total, 100 to 4,000 and preferably 200 to 2,000 mg/l and which have a pH value of 0.3 to 3.5 and preferably in the range from 1 to 3.
  • the treatment solutions may additionally contain polymers of the polyacrylate type and/or in the form of reaction products of poly(vinylphenol) with aldehydes and organic hydroxyfunctional amines in concentrations below 500 mg/l and preferably below 200 mg/l.
  • Phosphoric acid is another optional constituent of these baths.
  • US-A-4,136,073 claims a chromium-free treatment process for aluminum surfaces, in which the surfaces are contacted with acidic (pH 1.2 to 5.5) aqueous solutions containing an organic film former and a soluble titanium compound in a ratio by weight of polymer to titanium of 100:1 to 1 :10.
  • the preferred titanium concentration is between 0.01 and 5% by weight.
  • US-A-5,868872 discloses a chromium-free process for the no-rinse treatment of aluminium and its alloys and aqueous bath solutions suitable for this process. The surfaces are contacted with solutions containing:
  • a chromium-free conversion coating is produced on the first and second surface of the aluminium or aluminium alloy strip in a continuous production line before applying the heat-seal lacquer and the stove lacquer, the chromium-free conversion coating is produced by
  • Cleaning and degreasing is preferably made by spraying the strip with an aqueous solution of 5 to 50 g/l, preferably 15 to 25 g/l, of an initial solution comprising 0.10 to 1.0 wt.-% bisoctyl dimethyl ammonium chloride, 5 to 10 wt.-% potassium hydroxide, 5 to 10 wt.-% phosphate (P) and ⁇ 5 wt.-% cationic tenside.
  • pickling is preferably made by spraying the strip with an aqueous solution of 5 to 50 g/l, preferably 15 to 25 g/l, of an initial solution comprising 65 to 80 wt.-% ortho phosphoric acid.
  • pickling is preferably made by spraying the strip with an aqueous solution of 5 to 30 g/l, preferably 8 to 15 g/l, of a first initial solution comprising 25 to 50 wt.-% sulphuric acid and 5 to 15 wt.-% non ionic tenside, and 0.1 to 10 g/l, preferably 1 to 3 g/l, of a second initial solution comprising 5 to 7 wt.-% hydrofluoric acid.
  • the conversion coating is preferably made by spraying the strip with a solution of 50 to 200 g/l, preferably 80 to 120 g/l, of an initial solution comprising silane and 10 to 25 wt.-% ethanol.
  • the conversion coating is preferably made by spraying the strip with an aqueous solution of 10 to 160 g/l, preferably 30 to 50 g/l, of a first initial solution comprising 5 to 10 wt.-% hexafluorotitanic acid and 2.5 to 5 wt.-% hexafluorozirconic acid, and 1 to 10 g/l, preferably 7 to 9 g/l, of a second initial solution comprising 20 to 21 wt.-% silica.
  • the conversion coating is preferably made by spraying the strip with an aqueous solution of 5 to 50 g/l, preferably 15 to 25 g/l, of a first initial solution comprising ⁇ 1 wt.-% diammonium dimolybdate and 5 to 10 wt.-% hexafluorozirconic acid, and 0.01 to 0.3 g/l, preferably 0.1 to 0.3 g/l, of a second initial solution comprising 10 to 25 wt.-% ammonium fluoride and 10 to 25 wt.-% ammonium hydrogen difluoride.
  • the conversion coating is preferably made by spraying the strip with an aqueous solution of 5 to 50 g/l, preferably 15 to 25 g/l, of a first initial solution comprising ⁇ 1 wt.-% diammonium dimolybdate and 5 to 10 wt.-% hexafluorozirconic acid, and 0.01 to 0.3 g/l, preferably 0.1 to 0.3 g/l, of a second initial solution comprising 10 to 25 wt.-% ammonium fluoride and 10 to 25 wt.-% ammonium hydrogen difluoride, and 0 to 2 g/l, preferably 0.05 to 0.2 g/l, of a third initial solution comprising 25 wt.-% polycarboxylic acid in water.
  • a conventionally cleaned and rinsed metal surface after rinsing with deionized water and drying and/or removal of the water film by squeegees, is wetted in any manner with the solution of silanes in the polar organic solvent aqueous treatment solution in such a quantity that around 2 to 20 ml and preferably around 5 to 10 ml of the polar organic treatment solution are applied per square meter of surface area.
  • the treatment solutions in the preferred no rinse process according to the invention may be applied to the precleaned metal strips by any method which is capable of producing a uniform, defined liquid film on the metal surface in the quantity ranges indicated.
  • the roller application process using two to four rollers (“chemcoater”) has proved to be particularly effective, although wetting of the strip by spraying or immersion and subsequent removal of the excess liquid film, for example by plastic-coated equalizing rollers or an adjustable air knife, is also suitable.
  • the temperature of the treatment solution may be in the range from 15°C to 30°C and is preferably in the range from 20°C to 25°C.
  • the liquid film applied to the metal surface is allowed to react thereon for about 1 to 40 seconds, after which the film is dried and heat-treated at elevated temperature.
  • the process steps of contact with the metal surface and drying may also be combined.
  • a formable, water-insoluble solid film with a weight per unit area of around 5 to 50 mg Si/m 2 and preferably around 10 to 30 mg Si/m 2 is left on the metal surface.
  • the drying and/or heat treatment of the liquid film applied to the metal surface, or rather of the chemicals applied with it, may be carried out at temperatures of around 80°C to 140°C, temperatures in the range from 110°C to 120°C being preferred.
  • Both acidic and alkaline cleaners are suitable for the cleaning pretreatment of the aluminum surfaces to be wetted in accordance with the invention.
  • the layers obtained with the treatment solution according to the invention provide a uniform finish of the aluminum substrate. In combination with the organic coatings subsequently applied, they satisfy the requirements of the food packaging industry.
  • the following example relates to a no-rinse process with a conversion coating by treatment with a solution of silanes in ethanol.

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  • Chemical & Material Sciences (AREA)
  • General Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Chemical Treatment Of Metals (AREA)
  • Cookers (AREA)

Claims (9)

  1. Procédé de production d'une bande en aluminium ou en alliage d'aluminium avec une laque de thermoscellage sur une première surface et une laque cuite au four à base d'époxyde sur la deuxième surface,
    caractérisé en ce que
    un revêtement de conversion exempt de chrome est produite sur les première et deuxième surfaces de la bande en aluminium ou en alliage d'aluminium dans une ligne de production en continu avant l'application de la laque de thermoscellage et de la laque cuite au four, le revêtement de conversion exempt de chrome étant produit par
    (A) un procédé sans rinçage par traitement avec une solution de silanes dans un solvant organique polaire, ou
    un procédé sans rinçage par traitement avec une solution aqueuse de 5 à 10 % en poids d'acide hexafluorotitanique (H2TiF6) et de 2,5 à 5 % en poids d'acide hexafluorozirconique (H2ZrF6), ou
    (B) un procédé avec rinçage par traitement avec une solution aqueuse de moins de 1 % en poids de dimolybdate de diammonium ((NH4)2Mo2O7) et de 5 à 10 % en poids d'acide hexafluorozirconique (H2ZrF6).
  2. Procédé de production d'un revêtement de conversion exempt de chrome sur une surface d'une bande en aluminium ou en alliage d'aluminium dans une ligne de production en continu selon la revendication 1, le procédé comprenant les étapes suivantes :
    déroulage en continu d'une bande laminée en aluminium ou en alliage d'aluminium à partir d'une première bobine ;
    recuit en continu de la bande déroulée ;
    nettoyage et dégraissage en continu de la surface de la bande recuite ;
    lavage en continu de la surface nettoyée et dégraissée de la bande ;
    décapage en continu de la surface de la bande lavée ;
    lavage en continu de la surface de la bande décapée ;
    séchage de la surface de la bande lavée ;
    production en continu d'un revêtement de conversion exempt de chrome sur la surface de la bande dotée d'un revêtement de conversion séchée ;
    éventuellement lavage de la surface de la bande dotée d'un revêtement de conversion ; séchage en continu de la surface de la bande dotée d'un revêtement de conversion et éventuellement lavée ;
    enroulement en continu de la bande séchée sur une deuxième bobine.
  3. Procédé selon la revendication 2, dans lequel le nettoyage et le dégraissage sont effectués par pulvérisation sur la bande d'une solution aqueuse de 5 à 50 g/l, de préférence de 15 à 25 g/l, d'une solution initiale comprenant 0,10 à 1,0 % en poids de chlorure de bis-octyldiméthylammonium, 5 à 10 % en poids d'hydroxyde de potassium, 5 à 10 % en poids de phosphate (P) et moins de 5 % en poids de tensioactif cationique.
  4. Procédé selon la revendication 2, dans lequel le décapage est effectué par pulvérisation sur la bande d'une solution aqueuse de 5 à 50 g/l, de préférence de 15 à 25 g/l, d'une solution initiale comprenant 65 à 80 % en poids d'acide orthophosphorique.
  5. Procédé selon la revendication 2, dans lequel le décapage est effectué par pulvérisation sur la bande d'une solution aqueuse de 5 à 30 g/l, de préférence de 8 à 15 g/l, d'une première solution initiale comprenant 25 à 50 % en poids d'acide sulfurique et 5 à 15 % en poids d'un tensioactif non-ionique, et de 0,1 à 10 g/l, de préférence de 1 à 3 g/l, d'une deuxième solution initiale comprenant 5 à 7 % en poids d'acide fluorhydrique.
  6. Procédé selon la revendication 2, dans lequel le revêtement de conversion est effectué par pulvérisation sur la bande d'une solution de 50 à 200 g/l, de préférence de 80 à 120 g/l, d'une solution initiale comprenant du silane et 10 à 25 % en poids d'éthanol.
  7. Procédé selon la revendication 2, dans lequel le revêtement de conversion est effectué par pulvérisation sur la bande d'une solution aqueuse de 10 à 160 g/l, de préférence de 30 à 50 g/l, d'une première solution initiale comprenant 5 à 10 % en poids d'acide hexafluorotitanique et 2,5 à 5 % en poids d'acide hexafluorozirconique, et de 1 à 10 g/l, de préférence de 7 à 9 g/l, d'une deuxième solution initiale comprenant 20 à 21 % en poids de silice.
  8. Procédé selon la revendication 2, dans lequel le revêtement de conversion est effectué par pulvérisation sur la bande d'une solution aqueuse de 5 à 50 g/l, de préférence de 15 à 25 g/l, d'une première solution initiale comprenant moins de 1 % en poids de dimolybdate de diammonium et 5 à 10 % en poids d'acide hexafluorozirconique, et de 0,01 à 0,3 g/l, de préférence de 0,1 à 0,3 g/l, d'une deuxième solution initiale comprenant 10 à 25 % en poids de fluorure d'ammonium et 10 à 25 % en poids d'hydrogénodifluorure d'ammonium.
  9. Procédé selon la revendication 2, dans lequel le revêtement de conversion est effectué par pulvérisation sur la bande d'une solution aqueuse de 5 à 50 g/l, de préférence de 15 à 25 g/l, d'une première solution initiale comprenant moins de 1 % en poids de dimolybdate de diammonium et 5 à 10 % en poids d'acide hexafluorozirconique, et de 0,01 à 0,3 g/l, de préférence de 0,1 à 0,3 g/l, d'une deuxième solution initiale comprenant 10 à 25 % en poids de fluorure d'ammonium et 10 à 25 % en poids d'hydrogénodifluorure d'ammonium, et de 0 à 2 g/l, de préférence de 0,05 à 0,2 g/l, d'une troisième solution initiale comprenant 25 % en poids d'acide polycarboxylique dans de l'eau.
EP12725321.9A 2011-06-10 2012-06-01 Procédé de production d'une bande d'aluminium ou d'alliage d'aluminium dotée d'une laque de thermoscellage sur une première surface et d'une laque cuite au four à base d'époxyde sur la seconde surface préalablement revêtue d'une couche de conversion exempte de chrome Active EP2718479B1 (fr)

Priority Applications (3)

Application Number Priority Date Filing Date Title
PL12725321T PL2718479T3 (pl) 2011-06-10 2012-06-01 Sposób wytwarzania pasków z aluminium lub stopów aluminium, z lakierem termoutwardzalnym na pierwszej powierzchni i lakierem piecowym na bazie epoksydowej na drugiej powierzchni, uprzednio pokrytymi bezchromową powłoką modyfikującą
EP12725321.9A EP2718479B1 (fr) 2011-06-10 2012-06-01 Procédé de production d'une bande d'aluminium ou d'alliage d'aluminium dotée d'une laque de thermoscellage sur une première surface et d'une laque cuite au four à base d'époxyde sur la seconde surface préalablement revêtue d'une couche de conversion exempte de chrome
HRP20180845TT HRP20180845T1 (hr) 2011-06-10 2018-05-28 Postupak proizvodnje aluminijskih traka ili traka od aluminijskih legura s vruće lijepljenim lakom na prvoj površini te s paljenim lakom na bazi epoksida na drugoj površini, koje su prethodno obložene konverzijskim slojem bez kroma

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
EP11004742A EP2532769A1 (fr) 2011-06-10 2011-06-10 Procédé de production dune couche de conversion sur une surface dune bande d'aluminium ou d'alliage d'aluminium
PCT/EP2012/002324 WO2012167889A1 (fr) 2011-06-10 2012-06-01 Procédé de production d'une bande d'aluminium ou d'alliage d'aluminium dotée d'une laque de thermoscellage sur une première surface et d'une laque cuite au four à base d'époxyde sur la seconde surface préalablement revêtue d'une couche de conversion exempte de chrome
EP12725321.9A EP2718479B1 (fr) 2011-06-10 2012-06-01 Procédé de production d'une bande d'aluminium ou d'alliage d'aluminium dotée d'une laque de thermoscellage sur une première surface et d'une laque cuite au four à base d'époxyde sur la seconde surface préalablement revêtue d'une couche de conversion exempte de chrome

Publications (2)

Publication Number Publication Date
EP2718479A1 EP2718479A1 (fr) 2014-04-16
EP2718479B1 true EP2718479B1 (fr) 2018-03-14

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Family Applications (2)

Application Number Title Priority Date Filing Date
EP11004742A Withdrawn EP2532769A1 (fr) 2011-06-10 2011-06-10 Procédé de production dune couche de conversion sur une surface dune bande d'aluminium ou d'alliage d'aluminium
EP12725321.9A Active EP2718479B1 (fr) 2011-06-10 2012-06-01 Procédé de production d'une bande d'aluminium ou d'alliage d'aluminium dotée d'une laque de thermoscellage sur une première surface et d'une laque cuite au four à base d'époxyde sur la seconde surface préalablement revêtue d'une couche de conversion exempte de chrome

Family Applications Before (1)

Application Number Title Priority Date Filing Date
EP11004742A Withdrawn EP2532769A1 (fr) 2011-06-10 2011-06-10 Procédé de production dune couche de conversion sur une surface dune bande d'aluminium ou d'alliage d'aluminium

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EP (2) EP2532769A1 (fr)
ES (1) ES2668270T3 (fr)
HR (1) HRP20180845T1 (fr)
PL (1) PL2718479T3 (fr)
WO (1) WO2012167889A1 (fr)

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IN2015DN01537A (fr) 2012-08-29 2015-07-03 Ppg Ind Ohio Inc
CN103230347A (zh) * 2013-05-03 2013-08-07 杨松涛 多效免冲洗浴液及其制备方法
DE102013107506A1 (de) 2013-07-16 2015-01-22 Thyssenkrupp Rasselstein Gmbh Verfahren zur Passivierung von bandförmigem Schwarzblech
PL3149072T3 (pl) 2014-05-27 2021-08-09 Amcor Flexibles Rorschach Ag Konstrukcja termozgrzewalna do jednorazowych aluminiowych pojemników do zaparzania napojów
DE102015113878B4 (de) 2015-08-21 2023-03-16 Thyssenkrupp Ag Verfahren zur thermischen Behandlung eines mit einer Konversionsschicht beschichteten Schwarzblechs
PL3350357T3 (pl) * 2015-09-15 2024-09-23 Chemetall Gmbh Obróbka wstępna powierzchni aluminiowych kompozycjami zawierającymi cyrkon i molibden
WO2018039462A1 (fr) 2016-08-24 2018-03-01 Ppg Industries Ohio, Inc. Composition alcaline destiné au traitement de substrats métalliques
US20200164403A1 (en) 2017-06-26 2020-05-28 Actega Rhenania Gmbh Process for applying a multicolour coating on a metal or metal alloy foil
CA3119494C (fr) 2018-12-21 2023-07-04 Actega Rhenania Gmbh Composition de revetement polymere presentant un faible point d'ebullition
CN110373661B (zh) * 2019-07-31 2021-05-28 首钢京唐钢铁联合有限责任公司 一种镀锡板钝化液及钝化工艺

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Publication number Publication date
EP2718479A1 (fr) 2014-04-16
EP2532769A1 (fr) 2012-12-12
HRP20180845T1 (hr) 2018-09-07
ES2668270T3 (es) 2018-05-17
WO2012167889A1 (fr) 2012-12-13
PL2718479T3 (pl) 2018-10-31

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