C - Chemistry – Metallurgy – 23 – F
Patent
C - Chemistry, Metallurgy
23
F
C23F 3/02 (2006.01) C23F 3/03 (2006.01) C25F 3/20 (2006.01)
Patent
CA 2389029
A method of producing a reflector sheet, which method comprises treating an Al alloy sheet to increase the total reflectance of a surface of the sheet for use as a lighting reflector by bringing the sheet into contact with an acid or alkaline fluid that dissolves aluminium metal, said fluid having a viscosity of less than 0.01 Pa.s, under conditions to remove from 10 nm to 2000 nm of metal from the surface, and cutting or forming the treated Al alloy sheet into the shape of a reflector sheet.
L'invention concerne un procédé de production d'une feuille réflectrice, consistant à traiter une feuille d'un alliage d'Al afin d'augmenter la réflectance totale d'une surface de la feuille, en vue de son utilisation en tant que réflecteur lumineux. Ce procédé consiste à mettre la feuille en contact avec un liquide acide ou alcalin dissolvant l'aluminium, ledit liquide ayant une viscosité inférieure à 0,01 Pa.s, dans des conditions permettant d'éliminer entre 10 nm et 2000 nm de métal depuis la surface, et à couper ou à former la feuille en alliage d'aluminium ainsi traitée pour lui donner la forme d'une feuille réflectrice.
Ellard Barry Roy
Furneaux Robin Christopher
Alcan International Limited
Kirby Eades Gale Baker
Novelis Inc.
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