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Forming shaped abrasive particles

  • US 8,753,558 B2
  • Filed: 12/31/2012
  • Issued: 06/17/2014
  • Est. Priority Date: 12/30/2011
  • Status: Active Grant
First Claim
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1. 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.

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