Patent ID: 6723943
Filing Date: 2004-04-20
Classification: B32B,C23C

Abstract:
A method for manufacturing a coated metallic strip for packaging comprising a thin metallic strip coated on at least one of its faces with a coating containing, in order starting from the surface of the thin metal strip, a layer of tin or tin base alloy, optionally an intermediate metal layer, and an organic layer formed of a polymer film, comprising:depositing a layer of tin or tin base alloy on at least one of the faces of the thin metallic strip; vacuum-depositing a layer of tin or tin base alloy on one face of at least one polymer film; bringing together the at least one polymer film having a layer of tin or tin base alloy and the thin metallic strip having at least one layer of tin or tin base alloy in such a way that the tin or tin base alloy face of the at least one film of polymer having a layer of tin or tin base alloy is across from one tin or tin base alloy face of the thin metallic strip having a layer of tin or tin base alloy, and injecting a flux between the said faces brought together to clean the surfaces covered with tin or tin base alloy; and welding the at least one polymer film on the face of the thin metallic strip.