Method of manufacturing aluminum flake pigment, aluminum flake pigment obtained by the manufacturing method and grinding media employed for the manufacturing method
AssigneeToyo Aluminium Kabushiki Kaisha
InventorsKeita Nagano, Takao Mizoshita
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Abstract
In order to provide a method of manufacturing an aluminum flake pigment having a small mean particle size as well as high brightness, a method of manufacturing an aluminum flake pigment including a step of flaking aluminum powder in an organic solvent with a grinder having grinding media, which grinding media contain steel ball grinding media formed by spherical media consisting of a material including steel and having diameters in the range of 0.3 mm to 1.0 mm, is provided. The mean particle size (D50Al) of this aluminum powder is preferably in the range of 1.0 to 10.0 μm. Further, this grinder is preferably a ball mill.
Claims11
A method of manufacturing an aluminum flake pigment including a step of flaking an aluminum powder to produce aluminum flakes as said aluminum flake pigment in an organic solvent with a grinder having grinding media, wherein said grinding media contain steel ball grinding media formed by spherical media comprising steel and having diameters in a range of 0.3 mm to 1.0 mm, wherein said aluminum powder has a mean particle size (D50Al) in a range of 1.0 μm to 4.6 μm, and a ratio (D50Al/DB) of said mean particle size (D50 Al) of said aluminum powder to an average diameter (DB) of said steel ball grinding media is in a range of 0.001 to 0.02 .
Dependencies are inferred from the claim text.