Method of producing a chromium-free conversion coating on a surface of an aluminium or aluminium alloy strip

In 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, a chromium-free conversion coating is produced on the first and second surface of the aluminium or aluminium alloy strip in a continuou...

Ausführliche Beschreibung

Gespeichert in:

Bibliographische Detailangaben
Hauptverfasser:	LUTZ, JUERG, SCHLAGER, HANS, SEGERER, RENE
Format:	Patent
Sprache:	eng ; fre ; ger
Schlagworte:	ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR ADHESIVES APPLYING LIQUIDS OR OTHER FLUENT MATERIALS TO SURFACES, IN GENERAL CHEMICAL PAINT OR INK REMOVERS CHEMICAL SURFACE TREATMENT CHEMISTRY COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATIONOR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY IONIMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL COATING COMPOSITIONS, e.g. PAINTS, VARNISHES ORLACQUERS COATING MATERIAL WITH METALLIC MATERIAL COATING METALLIC MATERIAL CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS,e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES,DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS CONVEYING CORRECTING FLUIDS DIFFUSION TREATMENT OF METALLIC MATERIAL DYES FILLING PASTES HANDLING THIN OR FILAMENTARY MATERIAL INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION INGENERAL INKS METALLURGY MISCELLANEOUS APPLICATIONS OF MATERIALS MISCELLANEOUS COMPOSITIONS NATURAL RESINS PACKAGES PACKAGING ELEMENTS PACKING PAINTS PASTES OR SOLIDS FOR COLOURING OR PRINTING PERFORMING OPERATIONS POLISHES PROCESSES FOR APPLYING LIQUIDS OR OTHER FLUENT MATERIALS TOSURFACES, IN GENERAL SPRAYING OR ATOMISING IN GENERAL STORING SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THESURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION TRANSPORTING USE OF MATERIALS THEREFOR WOODSTAINS
Online-Zugang:	Volltext bestellen
Tags:	Tag hinzufügen Keine Tags, Fügen Sie den ersten Tag hinzu!

Beschreibung
Zusammenfassung:	In 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, 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 hot seal lacquer and the stove lacquer, the chromium-free conversion coating is produced by (A) a no-rinse process by treatment with a solution of silanes in a polar organic solvent, or a no-rinse process by treatment with an aqueous solution of 5 to 10 wt.-% hexafluorotitanic acid (H 2 TiF 6 ) and 2.5 to 5 wt.-% hexafluorozirconic acid (H 2 ZrF 6 ), or (B) a rinse process by treatment with an aqueous solution of < 1 wt.-% diammonium dimolybdate ((NH 4 ) 2 Mo 2 O 7 ) and 5 to 10 wt.-% hexafluorozirconic acid (H 2 ZrF 6 ).