3m Innovative Properties Company

Minnesota Mining and Manufacturing Company

Ernest L Thurber

Eric G Larson

Alan R Kirk

Gregg D Dahlke

Don H Kincaid

Brian G Koethe

Steven J Keipert

Yuyang Liu

Robert J DeVoe

Hassan Sahouani

Stephen A Ezzell

Scott R Culler

Thomas J Nelson

Louis S Moren

Roy Stubbs

Kam Wah Law

Aaron K Nienaber

John T Boden

Brian D Goers

John E Gozum

Walter L Harmer

James L McArdle

Albert I Everaerts

Mahfuza B Ali

Negus B Adefris

Stephen M Sanocki

Yu Yang

Joseph B Eckel

Thomas J Anderson

Kathleen S Shafer

Corinne Elizabeth Lipscomb

Ann M Hawkins

Brant A Moegenburg

Fay T Salmon

Junting Li

Geoffrey I Wilson

Ronald D Provow

Mark A Lukowski

Rebecca A Putans

Mark R Meierotto

Elizabeth C Edblom

Chainika Jangu

Walter Flaschberger

Wayne W Maurer

Cyrus A Anderson

Madeline P Shinbach

Gregory P Sorenson

Amelia W Koenig

Morgan A Priolo

Liming Song

Jeffry L Jacobs

Thomas E Boettcher

Andrew M Hine

Jing Zhang

Yaohua Gao

Daniel M Lentz

Jeffrey S Peterson

Ibrahim A El-Hedok

Robinette S Alkhas

John T Wallace

Ronald D Apple

Jingwen Ma

Gregory A Berg

Grayce T Huberty

Gregory S Mueller

Laura M Lara Rodriguez

Jon T Schwartz

Mark R Nyberg

Jeffery S Thomford

Michelle L Conklin

Charles C Drange

Robert J Hnatyk

Marcos R Nery

Duane M Pinault

Blake R Rustad

James L Mcardle

Jeffrey S Thomford

A coated abrasive article () comprises: a backing () comprising polyester and having a major surface (); a tie layer () directly bound to at least a portion of the major surface (); and an abrasive layer () directly bound to at least a portion of the tie layer (), the abrasive layer () comprising abrasive particles () and at least one binder resin (). The tie layer () comprises an at least partially cured blend of, on a solids basis, from 50 to 99 parts by weight of at least one styrene-butadiene copolymer latex and from 1 to 50 parts by weight of at least one resorcinol-formaldehyde resin. A treated backing () comprising polyester having the preceding tie layer () directly bound thereto is also disclosed.

Treated backing and coated abrasive article including the same

A coated abrasive article comprises a backing having first and second opposed major surfaces. A make layer is bonded to the first major surface. Agglomerate grinding aid particles are directly bonded to the make layer. At least a portion of the agglomerate grinding aid particles comprise grinding aid particles retained in a binder, and are arranged according to an open predetermined pattern. Abrasive particles are directly bonded to the make layer in spaces between the agglomerate grinding aid particles. A size layer is directly bonded to the make layer, agglomerate grinding aid particles, and abrasive particles. A method of making a coated abrasive article, in which the agglomerate grinding aid particles are deposited onto a curable make layer precursor prior to depositing abrasive particles onto the curable make layer precursor in spaces between the agglomerate grinding aid particles is also disclosed.

Coated abrasive articles and methods of making coated abrasive articles

The disclosure relates to a curable composition comprising: a polymerizable epoxy-acrylate resin composition having a complex viscosity at 25° C. and 1 Hz frequency of at least about 4500 Pa-s and a probe tack peak force of at least about 300 kPa; and abrasive particles partially or fully embedded in the polymerizable epoxy-acrylate resin composition. The disclosure also relates to cured compositions formed from such curable compositions, wherein the abrasive particles are partially or fully embedded in the cured composition. In addition, the disclosure relates to abrasive articles made from such cured compositions as well as methods for making abrasive articles.

Flexible abrasive article

Various embodiments disclosed relate to pore inducers and porous abrasive forms made using the same. In various embodiments, the present invention provides a method of forming a porous abrasive form including heating an abrasive composition including pore inducers to form the porous abrasive form. During the heating the pore inducers in the porous abrasive form reduce in volume to form induced pores in the porous abrasive form.

Pore inducer and porous abrasive form made using the same

An abrasive article includes a first plurality of abrasive particles and a second plurality of abrasive particles. The first plurality of abrasive particles differ in at least one of a size, an average weight and a shape from the second plurality of abrasive particles. The first plurality of abrasive particles are spaced from the second plurality of abrasive particles by at least a minimum distance in the x-axis direction, and both the first plurality of abrasive particles and the second plurality of abrasive particles extend in similar paths to one another with respect to the y-axis.

Abrasive article with different pluralities of abrasive particles

In methods and systems of making an abrasive article, abrasive particles are loaded to a distribution tool including a plurality of upper walls defining a plurality of spacing slots, and a plurality of lower walls defining a plurality of distribution slots. The spacing slots are open to the distribution slots, which are open to a lower side of the tool. The loaded particles are spaced and distributed from the distribution tool to a major face of a backing web below the lower side and moving relative to the tool in a machine direction. The upper walls space the particles in the machine direction. The particles distributed by the lower walls undergo an orientation sequence in which each particle is oriented into a column aligned along the machine direction. The upper walls can be disposed oblique to the lower walls. The upper and lower walls can have pointed upper portions.

Systems and methods for making abrasive articles

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

A system includes a distribution tool, a backing, a first plurality of abrasive particles and a second plurality of abrasive articles. The distribution tool includes a first section and a second section. The first section is configured to receive the first plurality of abrasive particles and pass the first plurality of abrasive particles through one or more of the plurality of slots to the backing. The second plurality of abrasive particles differ in at least one of a size, an average weight and a shape from the first plurality of abrasive particles. The second section is configured to receive the second plurality of abrasive particles and pass the second plurality of abrasive particles through one or more of the plurality of slots to the backing.

Systems, methods and tools for distributing different pluralities of abrasive particles to make abrasive articles

In some examples, an abrasive particle transfer system including a production tool including a dispensing surface with a plurality of cavities formed therein; abrasive particles removably disposed within at least some of the cavities; and a nonwoven substrate having an outer surface opposing the dispensing surface of the production tool, wherein the dispending surface of the production tool is configured to apply a compressive force to the outer surface of the nonwoven substrate to compress the nonwoven substrate from a first thickness to a second thickness, wherein, while the nonwoven substrate is compressed to the second thickness by the production tool, the abrasive particles are transferred from the plurality of cavities to the nonwoven substrate.

Abrasive article and method of making the same

Methods of making an abrasive article. Abrasive particles are loaded to a distribution tool including a plurality of walls defining a plurality of slots. Each slot is open to a lower side of the tool. The loaded particles are distributed from the distribution tool to a major face of a backing web below the lower side and moving relative to the tool. At least a majority of the particles distributed from the tool undergo an orientation sequence in which each particle first enters one of the slots. The particle then passes partially through the slot such that a first portion is beyond the lower side and in contact with the major face, and a second portion within the slot. The sequence then includes the particle remaining in simultaneous contact with one of the walls and the major face for a dwell period while the web moves relative to the tool.

An abrasive article comprises abrasive particles adhered to a substrate by a binder material comprising an at least partially cured resole phenolic resin and an aliphatic tack modifier. The amount of resole phenolic resin comprises from 60 to 98 weight percent of the combined weight of the resole phenolic resin and the aliphatic tack modifier. A method of making the abrasive article is also disclosed.

A method of making a coated abrasive article includes the steps of: applying a make coat to a first major surface of a backing; applying shaped abrasive particles to the make coat to form a first abrasive layer consisting essentially of shaped abrasive particles; applying diluent particles to the make coat over the shaped abrasive particles to form a final abrasive layer; applying a size coat over the final abrasive layer; curing the make and size coats; and wherein the shaped abrasive particles comprise a vertex opposite a base and a width of the shaped abrasive particle tapers from the base to the vertex.

Method of making a coated abrasive article having shaped abrasive particles and resulting product

Disclosed is a method of applying particles to a coated backing. A first layer of particles is created over a second layer of particles on a support surface and the first layer of particles is different in at least one property from the second layer of particles. A coated backing is positioned above the first and second layer of particles. An electrostatic field is applied simultaneously to the first and second layer of particles such that the first layer of particles closer to the coated backing are preferentially attracted to the coated backing first before the second layer of particles.

Layered particle electrostatic deposition process for making a coated abrasive article

Growing community of inventors

Somerset, WI, United States of America

Ernest L Thurber