Nonwoven abrasive articles having electrostatically-oriented abrasive particles and methods of making same

• Main Authors: Moren, Louis S, Wu, Tien T, Hoffdahl, Gerry A, Alkhas, Robinette S, Nienaber, Aaron K, Huberty, Grayce T, Nelson, Thomas J, Schultz, Nathan E, Apple, Ronald D
• Format: Patent
• Language: English
• Published: 07.06.2022
• Subjects: ADHESIVES; APPLYING LIQUIDS OR OTHER FLUENT MATERIALS TO SURFACES, IN GENERAL; CHEMISTRY; DYES; GRINDING; MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FORELSEWHERE; METALLURGY; MISCELLANEOUS APPLICATIONS OF MATERIALS; MISCELLANEOUS COMPOSITIONS; NATURAL RESINS; PAINTS; PERFORMING OPERATIONS; POLISHES; POLISHING; PROCESSES FOR APPLYING LIQUIDS OR OTHER FLUENT MATERIALS TOSURFACES, IN GENERAL; SPRAYING OR ATOMISING IN GENERAL; TOOLS FOR GRINDING, BUFFING, OR SHARPENING; TRANSPORTING

Abrasive articles including a nonwoven fibrous substrate having a plurality of fibers, and a multiplicity of shaped abrasive particles, each shaped abrasive particle adhered to a corresponding fiber, each shaped abrasive particle having a length (L) and a width (W) determined in a direction substantially orthogonal to the length, the ratio of the length to the width defining an aspect ratio (L/W) of at least 1.1, each abrasive particle is oriented relative to its corresponding fiber, and more than 50% of the abrasive particles are oriented with respect to their corresponding fiber such that the abrasive particle length extends generally outwardly away from a surface of the corresponding fiber as determined visually using the Orientation Test. The shaped abrasive particles may have the geometric shape of a polygonal prism having two faces and at least three sides thereon. Methods of making the abrasive articles are also disclosed.