Patent ID: 6138490
Filing Date: 2000-10-31
Classification: B21B,F21V,G02B,Y10S,Y10T

Abstract:
A process for rendering a metal sheet suitable for use as a light reflector, said method comprising:mechanically texturing at least one surface of said metal sheet with a pair of reducing rolls for reducing the thickness of said metal sheet to a final gauge to imbue said at least one surface of said sheet with non-directional, diffuse reflecting photometric properties forming random depressions on said at least one surface through said texturing, and wherein said process further comprises subjecting said metal sheet to a cold rolling force sufficient to reduce said metal sheet to said final gauge by passing said metal sheet between said pair of reducing rolls, and controlling the RA value of said depressions between 10 and 55 microinches and controlling the point count value of said depressions between 300 and 550 peaks per inchsurface finishing said sheet, to form said light reflector.