3m Innovative Properties Company

Minnesota Mining and Manufacturing Company

Scott R Culler

John T Boden

Negus B Adefris

John D Haas

Dwight D Erickson

Thomas P Klun

Kathryn M Spurgeon

Steven J Keipert

Gary L Holmes

David H Hardy

William A Hendrickson

Kimberly K Harmon

Robert V Heiti

James L McArdle

Charles J Studiner, Iii

Moses Mekala David

Sumita Basu Mitra

Bing Wang

Jeffrey W Nelson

John T Wallace

Matthew H Frey

Aaron K Nienaber

Ernest L Thurber

David C Kramlich

John L Vandenberg

Kathleen M Schakel-Carlson

Timothy L Hoopman

Donna Wendeln Bange

Peter T Benson

Bradford B Wright

Wesley J Bruxvoort

Brian G Koethe

Roy Stubbs

Karan Jindal

William L Stoetzel

Mara E Liepa

David L Morrison

Pratik Pranay

Jerald K Rasmussen

Albert I Everaerts

Larry R Krepski

Jimmie Rae Baran, Jr

Mahfuza B Ali

Edward J Woo

Thomas J Nelson

Eric G Larson

Joseph B Eckel

Brian D Goers

William P Wood

Dipankar Ghosh

John J Gagliardi

Dwight W Jacobs

Jeffrey W McCutcheon

Paul D Graham

Carl R Kessel

Peter D Wickert

Thomas W Martin

Don H Kincaid

Chaodi Li

Maiken Givot

Jerry W Williams

Brant A Moegenburg

Richard J Webb

David A Kaisaki

Louis D Hibbard

Madeline P Shinbach

Jon W Fundingsland

Heather K Kranz

Melissa C Schillo-Armstrong

Daniel E Mickus

Kwok-Lun Ho

Philip E Kendall

Jon R Pieper

Michael V Mucci

Chainika Jangu

Robert P Messner

Julia P Williams

Robinette S Alkhas

Rebecca A Putans

Richard M Olson

Ibrahim A El-Hedok

Ronald D Apple

Soon C Park

Gregory S Mueller

Laura M Lara Rodriguez

Thomas W Larkey

Wayne W Maurer

Gregory A Berg

Jon T Schwartz

Larry L Martin

Roger J Eicheldinger

Piotr S Stach

David L Wakefield

Jeffrey S Steinmetz

William C Quade

Brian J Brinkmeier

Jimmie R Baran

Damon Smyth

Nicola Pullan

Jeffrey W Mccutcheon

Abrasive particles comprising shaped abrasive particles each having a sidewall, each of the shaped abrasive particles comprising alpha alumina and having a first face and a second face separated by a sidewall and having a maximum thickness, T; and the shaped abrasive particles further comprising a plurality of grooves on the second face.

Production tool to make abrasive particles with grooves

The method generally involves the steps of filling the cavities in a production tool each with an individual abrasive particle. Aligning a filled production tool and a resin coated backing for transfer of the abrasive particles to the resin coated backing. Transferring the abrasive particles from the cavities onto the resin coated backing and removing the production tool from the aligned position with the resin coated backing. Thereafter the resin layer is cured, a size coat is applied and cured and the coated abrasive article is converted to sheet, disk, or belt form by suitable converting equipment.

Coated abrasive article with multiplexed structures of abrasive particles and method of making

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

Method of making a coated abrasive article

Shaped abrasive particles each having a sloping sidewall. Each of the shaped abrasive particles containing alpha alumina and having a first face and a second face separated by a thickness, t. The shaped abrasive particles further having a draft angle &#x3b1; between the second face and the sloping sidewall, and the draft angle &#x3b1; is between about 95 degrees to about 125 degrees.

Shaped abrasive particles with a sloping sidewall

Electrically conductive articles are provided, including a composite including (a) a resin, and (b) electrically conductive shaped particles distributed in the resin, the particles having a monosized distribution. Each particle has a shape including at least a first surface and a second surface intersecting the first surface at an angle a between about 5 degrees and about 150 degrees. The composite has a thickness and often each of the electrically conductive shaped particles distributed in the resin is oriented within the resin such that the particle does not extend beyond the thickness of the composite. A method for making an electrically conductive article is also provided, including (a) providing electrically conductive shaped particles having a monosized distribution, and (b) distributing the particles into a resin to form a composite.

Electrically conductive article containing shaped particles and methods of making same

A coated abrasive article maker apparatus is disclosed comprising a first web path comprising a production tool and a second web path configured for a resin coated backing. The second web path is configured to guide the resin coated backing through the coated abrasive article maker apparatus with the resin layer positioned facing the dispensing surface. An abrasive particle feeder is positioned along the first web path and is configured to dispense abrasive particles onto the dispensing surface such that abrasive particles are removably disposed within cavities of the production tool. Abrasive particles are transferred from the plurality of cavities to the resin layer of the resin coated backing when the production tool is positioned adjacent the resin coated backing.

Coated abrasive article maker apparatus

A coated abrasive article maker apparatus including a first web path guiding a production tool such that it wraps a portion of the outer circumference of an abrasive particle transfer roll; a second web path for a resin coated backing guiding the resin coated backing such that it wraps a portion of the outer circumference of the abrasive particle transfer roll with the resin layer positioned facing the dispensing surface of the production tool this is positioned between the resin coated backing and the outer circumference of the abrasive particle transfer roll; and wherein abrasive particles are transferred from cavities in the production tool to the resin coated backing as the resin coated backing and the production tool traverse around the abrasive particle transfer roll.

Methods of making abrasive articles involve adhering shaped abrasive particles to a reinforcing member according to a predetermined pattern and optionally orientation, and depositing a space-filling binder precursor on the reinforcing member and shaped abrasive particles to provide a filled abrasive preform, disposing another reinforcing member onto the filled abrasive preform, and curing the abrasive article precursor to form the abrasive articles. In some aspects, multiple abrasive preforms are stacked on each other. Bonded abrasive wheels preparable according to the methods are also disclosed.

Methods of making abrasive articles and bonded abrasive wheel preparable thereby

Structured abrasive articles include a backing and shaped abrasive composites secured to the backing. The shaped abrasive composites include abrasive grits dispersed in a binder matrix. The shaped abrasive composites include a bottom surface and a top surface opposite and not contacting the bottom surface, and at least three sidewalls abutting both the bottom and top surfaces and two other sidewalls. In one embodiment, at least two cusps are formed by the top surface and individual sidewalls. In another embodiment, the top surface includes at least two triangular facets that contact at least two respective sidewalls and at least two cusps. The top surface includes at least one interior recessed portion nearer the cusps than the bottom surface. Methods of abrading a workpiece using the structured abrasive article are also disclosed.

Structured abrasive articles and methods of using the same

A method of making abrasive particles includes exposing ceramic particles to an organosilane-derived plasma formed from components comprising an organosilane and oxygen to form plasma-modified ceramic particles; and contacting a coupling agent with the second plasma-treated ceramic particle to provide the abrasive particle. Abrasive particles preparable by the method and abrasive particles containing them are also disclosed.

Abrasive particles, method of making abrasive particles, and abrasive articles

A method includes: providing a mold having a plurality of mold cavities, wherein each mold cavity is bounded by a plurality of faces joined along common edges; filling at least some of the mold cavities with a sol-gel composition that includes a release agent dispersed therein; at least partially drying the sol-gel composition thereby forming shaped ceramic precursor particles; calcining at least a portion of the shaped ceramic precursor particles to provide calcined shaped ceramic precursor particles; and sintering at least a portion of the calcined shaped ceramic precursor particles to provide ceramic shaped abrasive particles. A sol-gel composition, shaped ceramic precursor particles, and ceramic shaped abrasive particles associated with practice of the method are also disclosed.

Method of making ceramic shaped abrasive particles, sol-gel composition, and ceramic shaped abrasive particles

Growing community of inventors

Burnsville, MN, United States of America

Scott R Culler