Method for the extrusion coating of a polymeric material on a steel substrate
AssigneeHenkel AG & Co. KGaA
InventorsArd de Zeeuw, Eshkumar Nadendla, Kerstin Schellbach, Gerrit Jan Odink
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Abstract
The present invention pertains to a method for extrusion coating of a polymeric material, especially a thermoplastic polymeric material, on steel, tin plated steel or zinc coated steel sheets, and to steel, tin plated steel or zinc coated steel sheets having a polymeric material coated thereon obtainable in such a method, as well as to the use of such steel, tin plated steel or zinc coated steel sheets having a polymeric material coated on at least one surface of the sheet to produce coils or formed parts made from such coils.
Claims19
A method for producing a steel, tin plated steel or zinc coated steel sheet having a polymeric material coated thereon, comprising steps of:
- i) feeding the steel, tin plated steel or zinc coated steel sheet into an extrusion coating arrangement, and
- ii) extrusion coating at least one surface of the steel, tin plated steel or zinc coated steel sheet with a polymer composition to obtain a coated metal sheet,
- wherein the polymer composition in step ii) comprises at least one olefin copolymer of at least one olefin and at least one compound copolymerizable with an olefin and comprising at least one free carboxyl group, wherein the at least one olefin copolymer is present in an amount of about 2 to 99 wt.-% based on total weight of the polymer composition.
Dependencies are inferred from the claim text.