Metal treatment – Process of modifying or maintaining internal physical... – Processes of coating utilizing a reactive composition which...
Patent
1994-01-21
1995-12-26
Silverberg, Sam
Metal treatment
Process of modifying or maintaining internal physical...
Processes of coating utilizing a reactive composition which...
156325, C25D 708, C25D 1108, C23C 2237
Patent
active
054784140
ABSTRACT:
A strip of gray reflective aluminum protected by a conversion coating and a light-permeable fluoropolymer coating which is non-adhesively interstitially mechanically bonded to the microscopic irregularities of the conversion coated surface. The highly reflective strip may be substituted for polished stainless steel and/or bi-metal and used under comparably aggressive conditions for a prolonged period without deleteriously affecting the initial D/I (distinctness of reflected image) of the shaped strip. The strip of arbitrary length may be shaped in rolling dies so that at least a portion of the strip has a radius of less than 10 mm without damaging or separating the fluoropolymer coating. The specific steps of the claimed process require starting with a bright-rolled clean strip which is conversion coated to carry a thin metal compound coating. After rinsing and drying, the reflective surface is coated with the fluoropolymer while maintaining at least 80% D/I. The strip can then be formed to a desired profile and treated with a corona discharge to activate its surface so as to facilitate non-adhesively bonding of a thermoplastic strip to the activated fluoropolymer surface.
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Bombalski Robert E.
Mozelewski Frank A.
Serafin Daniel L.
Aluminum Company of America
Brownlee David W.
Silverberg Sam
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