Surface preparation and polymeric coating of...

Details Surface preparation and polymeric coating of... Surface preparation and polymeric coating of...

2006-09-05

2006-09-05

Jackson, Monique R. (Department: 1773)

Adhesive bonding and miscellaneous chemical manufacture

Methods

Surface bonding and/or assembly therefor

C156S244180, C156S244210, C156S074000, C264S171140, C264S171210

Reexamination Certificate

active

07101454

ABSTRACT:
Engineered composite coated flat-rolled steel strip is produced in continuous line operations, in which flat-rolled steel strip, free of surface iron oxide, having a metallic corrosion-protective coating, is polymer coated in continuous-line operations in which a plurality of adherent thin-film layers of polymeric material are deposited on a strip surface. In a dual-surface polymeric coating embodiment, each surface is separately-pretreated for surface adhesion, solidified, and polymeric overhang is removed. Finish processing re-melts the polymer coating and rapidly cools that coating through glass-transition temperature to establish amorphous characteristics in the polymeric coating materials. An anhydride-modified polypropylene, first contacts the strip, an intermediate layer can include about fifteen to twenty five percent, by weight, polybutylene with the balance polypropylene; an outer surface polymeric layer includes about five to ten percent, by weight, polybutylene with the balance polypropylene.

REFERENCES:
patent: 4941935 (1990-07-01), Gregory
patent: 5919517 (1999-07-01), Levendusky et al.
patent: 6143825 (2000-11-01), Beren et al.
patent: 6773217 (2004-08-01), Sinsel et al.
patent: 2003/0152788 (2003-08-01), Velliky

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