Forming shaped abrasive particles
AssigneeSaint-Gobain Ceramics & Plastics, Inc.
InventorMichael D. Kavanaugh
Life of this patent
Estimating the term…
Abstract
A method of forming a shaped abrasive particle includes extruding a mixture into an opening in a screen within an application zone and translating the screen and belt to a release zone and separating the screen and belt to form a precursor shaped abrasive particle on the belt, wherein the screen and belt are separated at a release angle of at least about 15° and not greater than about 45°, wherein the release angle is defined as an angle between a surface of the screen and a surface of the belt.
Claims14
A method of forming a shaped abrasive particle comprising:
- extruding a mixture into an opening in a screen within an application zone;
- and
- translating the screen and belt to a release zone and separating the screen and belt to form a precursor shaped abrasive particle on the belt, wherein the screen and belt are separated at a release angle of at least about 15° and not greater than about 45°, wherein the release angle is defined as an angle between a surface of the screen and a surface of the belt;
- and
- further comprising a knife edge integrally formed with a die and configured to engage the mixture upon extrusion from a die opening, wherein the knife edge comprises an erodible surface.
A method of forming a shaped abrasive particle comprising:
- extruding a mixture through a die opening of a die and into an opening of a screen underlying the die opening within an application zone, and
- forcing at least a portion of the mixture into the opening while translating the screen under a knife edge integrally formed with a surface of the die, wherein the knife edge is configured to contact a surface underlying the die and wear away until forces between the knife edge and the surface are balanced.
Dependencies are inferred from the claim text.