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US 8,142,532 B2Granted
Shaped abrasive particles with an opening
Assignee3M Innovative Properties Company
InventorsDwight D. Erickson, Scott R. Culler, Negus B. Adefris, John T. Boden, John D. Haas
Life of this patent
Estimating the term…
Abstract
Abrasive particles which are shaped abrasive particles each with an opening is disclosed. The shaped abrasive particles are formed from alpha alumina and have a first face and a second face separated by a thickness t. The opening in each of the shaped abrasive particles can improve grinding performance by reducing the size of a resulting wear flat, can provide a reservoir for grinding aid, and can improve adhesion to a backing in a coated abrasive article.
Claims34
Abrasive particles comprising:
- shaped abrasive particles having a shape that is replicated from a mold cavity, the shaped abrasive particles each having an opening, each of the shaped abrasive particles comprising alpha alumina and having a first face and a second face separated by a thickness t.
Abrasive particles comprising:
- shaped abrasive particles having a shape that is replicated from a mold cavity, the shaped abrasive particles each having a single opening, each of the shaped abrasive particles comprising alpha alumina and having a first face and a second face separated by a thickness t and wherein the single opening passes through the first face and the second face.
Dependencies are inferred from the claim text.