TRANSFER ASSISTED SCREEN PRINTING METHOD OF MAKING SHAPED ABRASIVE PARTICLES AND THE RESULTING SHAPED ABRASIVE PARTICLES

  • US 20110146509A1
  • Filed: 06/30/2010
  • Published: 06/23/2011
  • Est. Priority Date: 12/22/2009
  • Status: Active Grant
First Claim
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11. A process for the production of shaped abrasive particles comprising alpha alumina, the process comprising screen printing shapes of a boehmite alumina sol gel onto a receiving surface to form a plurality of screen printed shapes, removing the screen printed shapes from a printing screen while applying a differential pressure between a first side of the screen printed shapes and a second side of the screen printed shapes that are in contact with the receiving surface, at least partially drying the screen printed shapes and firing the screen printed shapes at a temperature sufficient to convert the alumina to the alpha phase.

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