Electrostatic abrasive particle coating apparatus and method
Assignee3M Innovative Properties Company
InventorsLouis S. Moren, Brian G. Koethe, John T. Boden
Life of this patent
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Abstract
A method of applying particles to a backing having a make layer on one of the backing's opposed major surfaces. The method including the steps of: supporting the particles on a feeding member having a feeding surface such that the particles settle into one or more layers on the feeding surface; the feeding surface and the backing being arranged in a non-parallel manner; and translating the particles from the feeding surface to the backing and attaching the particles to the make layer by an electrostatic force.
Claims22
A method of applying particles to a backing having a make layer on one of the backing's opposed major surfaces comprising:
- supporting the particles on a feeding member having a feeding surface comprising a conductive material such that the particles settle into one or more layers on the feeding surface;
- the feeding surface and the backing being arranged in a non-parallel manner;
- and
- translating the particles from the feeding surface to the backing by an electrostatic force and attaching the particles to the make layer.
Dependencies are inferred from the claim text.