3m Innovative Properties Company

Robinette S Alkhas

Ronald D Apple

Thomas J Nelson

Aaron K Nienaber

Louis S Moren

Scott R Culler

Negus B Adefris

Ernest L Thurber

Joseph B Eckel

Dwight D Erickson

Nathan E Schultz

Tien T Wu

Brian G Koethe

Maiken Givot

Dean S Holmes

Gerry A Hoffdahl

Melissa C Schillo-Armstrong

Loc X Van

Brett A Beiermann

Chainika Jangu

Grayce T Huberty

Gregory S Mueller

Laura M Lara Rodriguez

Laurie L Poluha

Jon T Schwartz

The disclosure relates to, among other things, abrasive particles comprising a microparticulate layer disposed on at least a portion of the outer surface of the abrasive particles, wherein the microparticulate layer comprises microparticles dispersed in a binder and the abrasive particles are shaped abrasive particles; abrasive articles comprising such abrasive particles, including coated abrasive articles, non-woven abrasive articles, and bonded abrasive articles; and methods of making those articles.

Abrasive article with microparticle-coated abrasive grains

Various embodiments disclosed relate to an abrasive article (). The abrasive article (includes a backing () defining a major surface. The abrasive article () includes an abrasive layer including a plurality of tetrahedral abrasive particles () attached to the backing (). The tetrahedral abrasive particles () include four faces joined by six edges terminating at four vertices (). Each one of the four faces contacts three of the four faces, and a major portion of the tetrahedral abrasive particles () have at least one of the vertices () oriented in substantially a same direction.

Tetrahedral abrasive particles in abrasive articles

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.

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

A nonwoven abrasive article includes a lofty open nonwoven fiber web comprising entangled fibers; and abrasive platelets secured to the entangled fibers by at least one binder material. A majority of the abrasive platelets are respectively bonded in an edge-wise manner to at least one of the entangled fibers. Methods of making the nonwoven abrasive article and converted forms, including a convolute abrasive wheel, are also disclosed.

Nonwoven abrasive article and method of making the same

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Winnetka, CA, United States of America

Robinette S Alkhas