3m Innovative Properties Company

Innovative Properties Company

Joseph B Eckel

Aaron K Nienaber

Thomas J Nelson

Steven J Keipert

Brant A Moegenburg

Ronald David Jesme

Thomas P Hanschen

Eric M Moore

Louis S Moren

Mikhail L Pekurovsky

Negus B Adefris

Nicholas T Gabriel

Brian D Goers

Thomas J Anderson

Mark B O'Neill

Kara A Meyers

Gary E Gaides

Saagar A Shah

Jaime A Martinez

Ankit Mahajan

Maiken Givot

Thomas J Metzler

Naiyong Jing

Albert I Everaerts

Scott R Culler

Mahfuza B Ali

Edward J Woo

Ernest L Thurber

Seyed Abolhassan Angadjivand

Tri Dinh Pham

Dwight D Erickson

John T Boden

Mark D Weigel

Shawn C Dodds

Ehrich J Braunschweig

David H Redinger

Orlin Bruce Knudson

Badri Veeraraghavan

Bert T Chien

Richard L Rylander

Rufus C Sanders, Jr

Marc A Egeland

Ann M Hawkins

Amelia W Koenig

Erin D Spring

Don Vincent West

Samad Javid

Mark A Lukowski

Melissa C Schillo-Armstrong

Brian G Koethe

Edward L Manor

Fay T Salmon

Yuyang Liu

Karl M Kropp

Adam D Miller

Taisiya Skorina

Nathan J Herbst

Andrew R Henry

Michael W Dolezal

Justin Tungjunyatham

Vincent R Jansen

Timothy J Rowell

Robert A Harkins

Scott W Peterson

Adam C Nyland

Loc X Van

Sergei A Manuilov

Ibrahim A El-Hedok

Cory M Arthur

Rebecca A Putans

Robinette S Alkhas

Brett A Beiermann

Sheryl A Vanasse

Wayne W Maurer

David T Buckley

Maria C Castillo

Alireza Ghaderi

Dominic J Triana

Eli A Davis

Ehrich J Bräunschweig

Rufus C Sanders

Bradley M Johnson

Paul HR Jolly

Abrasive articles and associated methods are shown that include abrasive particles arranged in one or more symbols on a backing substrate. Examples include shaped abrasive particles arranged into one or more symbols. Other examples include one or more wear particles with a height less than other abrasive particles, such that when exposed, the wear particles indicate a wear condition of the abrasive article.

Patterned abrasive substrate and method

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

According to one embodiment, a method can comprise: providing a tool that has a first portion that comprises a first material and a second portion that comprises a second material, wherein the second material differs from the first material and the tool is subject to a magnetic field, and wherein the first material and the second material are provided such that the magnetic field is relatively stronger at and adjacent the first portion relative to the magnetic field at and adjacent the second portion; positioning a surface adjacent to the tool so as to be subject to the magnetic field; and disposing magnetizable abrasive particles on the surface, wherein the magnetizable abrasive particles are attracted to an area on the surface adjacent the first portion where the magnetic field is relatively stronger so as to provide for at least one of a desired orientation, placement and alignment of a majority of the magnetizable abrasive particles on the surface.

Magnetically assisted disposition of magnetizable abrasive particles

Abrasive articles and associated methods are shown that include one or more camouflaging layers that can be applied to a portion of the abrasive article. The one or more camouflaging layers can be applied over the size coat layer as a discontinuous colored layer covering a portion of the size coat layer. In an example, the camouflaging layer can be applied as a repeating pattern of one or more colors on the abrasive article. In an example, the camouflaging layer can be applied randomly to the abrasive article. The discontinuous layer can have a color markedly different than a color of the size coat layer and can be used to mask or minimize an appearance of particle imperfections or voids on the abrasive article. The discontinuous layer can be applicable to coated and non-woven abrasive articles in the form of sheets, discs, belts, pads, or rolls.

Camouflage for abrasive articles

Coated abrasive articles having spacer particles are formed by providing a production tool having a dispensing surface with a plurality of cavities, guiding the production tool past an abrasive particle feeder, dispensing shaped abrasive particles onto the dispensing surface and into the plurality of cavities of the production tool, guiding a resin coated backing sheet adjacent the production tool past a spacer particle feeder, and dispensing spacer particles onto the resin coated backing sheet and/or the production tool after the abrasive particle feeder prior to a deposit point for the shaped abrasive particles. The spacer particles are selected to have a thickness that is greater than a thickness of a resin coating of the resin coating backing sheet and a thickness and density once dispensed that are sufficient to substantially prevent the production tool from contacting the resin coated backing sheet at the deposit point.

Coated abrasive article having spacer particles, making method and apparatus therefor

A repositionable abrasive disc mounting assembly comprises a backup pad and a clamp assembly. The backup pad has a rotational axis of use and a major surface with projections extending outwardly therefrom. The backup pad further comprises an inwardly facing centrally disposed first fastening member, and also an outwardly facing centrally disposed second fastening member. The clamp assembly comprises inner and outer clamp members for securing an abrasive disc. The inner clamp member comprises an inwardly facing centrally disposed third fastening member adapted to repositionably engage the second fastening member in a discrete number of rotational orientations. The inner clamp member further comprises an outwardly facing centrally disposed fourth fastening member. The outer clamp member comprises an inwardly facing centrally disposed fifth fastening member adapted to securely engage the fourth fastening member. A method of abrading a workpiece using the repositionable abrasive disc is also disclosed.

Repositionable abrasive disc mounting assembly and method of using the same

According to one embodiment, a method of making an abrasive layer on a backing is disclosed. The method can comprise: providing a distribution tool having a dispensing surface with cavities, providing a backing having a first major surface, supplying magnetizable abrasive particles to the dispensing surface such that at least one of the magnetizable abrasive particles is disposed in a respective one of the cavities, applying a magnetic field to retain the magnetizable abrasive particles disposed in the cavities, aligning the backing with the dispensing surface with the first major surface facing the dispensing surface, transferring the magnetizable abrasive particles from the cavities to the backing, sequent to or simultaneous with transferring the abrasive particles, removing or changing a magnetic field so the magnetic field no longer retains the magnetizable abrasive particles in the cavities.

Use of magnetics with magnetizable abrasive particles, methods, apparatuses and systems using magnetics to make abrasive articles

A method of applying magnetizable particles onto an adherent web includes several steps. Step a) provides a magnetizable particle coating apparatus comprising a downward sloping dispensing surface at least partially disposed within an applied magnetic field. Step b) disposes an adherent web between upper and lower magnetic members and beneath the downward sloping dispensing surface, wherein the web comprises a backing having a curable binder precursor layer disposed on a major surface thereof. Step c) disposes magnetizable particles onto at least a portion of the downward sloping dispensing surface within the applied magnetic field, and subsequently disposed onto the curable binder precursor layer while the adherent web is advanced from an upweb position to a downweb position. Step d) at least partially cures the curable binder precursor layer to fix the orientations of the magnetizable particles.

Method of making a coated abrasive article

The present disclosure provides systems, devices, and methods for abrasive articles and manufacturing the same. A method includes receiving, at a shaped abrasive particle placement tool comprising cavities (), shaped abrasive particles (), determining whether a threshold number of cavities of the cavities () includes a shaped abrasive particle situated properly therein, in response to determining there is not a threshold number of cavities of the cavities () with a shaped abrasive particle () situated properly therein, receiving, at the shaped abrasive particle placement tool, further shaped abrasive particles, and in response to determining that at least the threshold number of cavities of the cavities () includes a shaped abrasive particle () of the shaped abrasive particles situated properly therein, releasing the shaped abrasive particles () from the shaped abrasive particle placement tool into a binding material () on a substrate () to adhere the shaped abrasive particles () to the substrate ().

Particle reception in abrasive article creation

Various embodiments of the present disclosure relate to a shaped abrasive particle transfer assembly. The shaped abrasive particle transfer assembly includes a substrate including an adhesive and a plurality of shaped abrasive particles adhered to the substrate and forming a predetermined pattern thereon.

Shaped abrasive particle transfer assembly

A method of making an optical film for control of light includes positioning a first mixture on a substrate, wherein the first mixture includes a first plurality of magnetizable particles dispersed in a first resin, assembling the first plurality of magnetizable particles into a desired structure for the control of the light by rotating modulation of at least a first magnetic field relative to the first plurality of magnetizable particles, and vitrifying the first resin while the first plurality of magnetizable particles are in the desired structure.

Magnetizable particles forming light controlling structures and methods of making such structures

Apparatus includes a production tooling having a dispensing surface with a plurality of cavities and formed into an endless belt. An abrasive particle feeder dispenses shaped abrasive particles onto the dispensing surface and into the plurality of cavities. A resin coated backing receives shaped abrasive particles from the cavities of the production tooling at a deposit point. A detecting device detects a pattern transition zone as the production tooling moves in the direction of travel and provides pattern transition zone detection data to one or more controllers to control a speed of the production tooling and/or a speed of the resin coated backing as the detected pattern transition zone passes the deposit point to change a pattern density of the shaped abrasive particles in a portion of the resin coated backing corresponding to the pattern transition zone of the production tooling.

Abrasive article maker with differential tooling speed

According to one embodiment, a solar device, comprises one or more photovoltaic cells disposed in an encapsulant and a light control structure including a louver film having a series of louver structures, wherein each louver structure includes one or more groupings of a plurality magnetizable particles aligned at least in a first orientation dispersed in a binding matrix. The light control structure substantially transmits light incident at a first angle and substantially limits transmission of light incident at a second angle. Each louver structure is spaced apart from an adjacent louver structure, wherein each louver structure is substantially aligned in a plane substantially parallel to an adjacent louver structure.

Device with light control structure having magnetizable particles

A system and method for producing an abrasive article includes a production tool configured to provide shaped abrasive particles to a resin coated backing. A first end and a second end of the production tool are spliced together to form a spliced area. The production tool includes a dispensing surface that includes a plurality of cavities formed between the first end and the second end and configured to receive and hold the shaped abrasive particles. The resin coated backing is configured to receive the shaped abrasive particles from the dispensing surface of the production tool and configured to receive further shaped abrasive particles to fill gaps in the shaped abrasive particles caused by an absence of the plurality of cavities in the spliced area.

Tooling splice accommodation for abrasive article production

Various embodiments disclosed relate to an abrasive article. The abrasive article includes a first major surface and an opposed second major surface. Each major surface contacts a peripheral side surface. A central axis extends through the first and second major surfaces. A first layer of abrasive particles is dispersed within the abrasive article according to a first predetermined pattern. Further a second layer of abrasive particles spaced apart from the first layer of abrasive particles and is dispersed within the abrasive article along a according to a second predetermined pattern. A binder material retains the first and second layers of abrasive particles in the abrasive article. A portion of the binder material is located between the first and second layers of abrasive particles. That portion of the binder material is substantially continuous.

Abrasive article and method of making the same

Growing community of inventors

Vadnais Heights, MN, United States of America

Joseph B Eckel