3m Innovative Properties Company

Charles R Wald

Edward J Woo

Curtis J Schmidt

Ehrich J Braunschweig

Seyed Abolhassan Angadjivand

Jeffrey Robert Janssen

Charles J Studiner, Iv

Paul D Graham

Donna Wendeln Bange

Rufus C Sanders, Jr

Thomas W Rambosek

Schoen A Schuknecht

Mark A Swanson

Suresh Kalatoor

James J Kobe

Graham M Clarke

Michael John Annen

John G Petersen

Ian R Owen

Brian W Lueck

Brant A Moegenburg

Deborah J Eilers

Shigeaki Dohgoshi

Douglas A Davis

Thomas B Galush

Thomas E Pahl

Timothy T Beyer

Christopher J Lee

Various embodiments disclosed relate to an abrasive sheet. The abrasive sheet includes a first layer including an abrasive major surface and an opposite second layer defining a second major surface. The second major surface includes a plurality of protrusions extending outwardly from the second major surface. The protrusions include a first polymer component having at least one of a Shore A hardness ranging from about 5 to about 100 and a Shore D hardness ranging from about 1 to about 70. The first layer and the second layer are directly joined to each other.

Abrasive sheet including a plurality of protrusions

Provided are abrasive articles in which the make layer, abrasive particle layer, and size layer are coated onto a backing according to a pre-determined coating pattern. All three components are generally in registration with each other, thereby providing a pervasive uncoated area extending across the backing. Advantageously, this configuration provides a coated abrasive that displays superior curl-resistance compared with previously disclosed abrasive articles. Moreover, this configuration resists loading, resists de-lamination, has enhanced flexibility, and decreases the quantity of raw materials required to achieve the same level of performance as conventional abrasive articles.

Coated abrasive articles

Provided are abrasive articles having a plurality of elongated channels extending across its working surface and intersecting with each other. These channels provide hinge points that enhance flexibility of the article along two or more directions. Optionally, the abrasive article includes a flexible attachment layer, along with apertures that penetrate through the attachment layer located at the intersection points of the channels. The enhanced flexibility allows the abrasive article to easily access recessed areas of the workpiece and facilitates applying even pressure across convex and concave surfaces. The channels assist in segregating dust particles from the abrading operation, and the optional apertures can be advantageously connected to a vacuum source for evacuation of the dust particles from the channels.

Flexible abrasive article and methods of making

A coated abrasive article () comprises a backing () having an abrasive coating () on one side, an attachment layer () on the other side of the backing, and a line of weakness () that does not penetrate the front face of the abrasive coating (). The line of weakness, which may be formed using a laser beam, comprises a through-cut () in the attachment layer () and perforations () in the backing (), and permits one part of the abrasive article () to be separated from another part. Alternatively, the abrasive article can be used in its original form.

Abrasive article having a line of weakness

Random hole abrasive disc

An abrasive article mounting assembly with an integral dust collection system. The abrasive attachment interface is configured to releasably engage and support an abrasive article, such as, for example, a porous abrasive sheet or disc.

Abrasive article mounting assembly and methods of making same

A porous abrasive article that allows air and dust particles to pass through. The abrasive article has a screen abrasive and a polymer netting with hooks. The screen abrasive has an abrasive layer comprising a plurality of abrasive particles and at least one binder. The polymer netting cooperates with the screen abrasive to allow the flow of particles through the abrasive article.

Abrasive article and methods of making same

A porous abrasive article that allows air and dust particles to pass through. The abrasive article has a screen abrasive and an apertured attachment interface with hooks. The screen abrasive has an abrasive layer comprising a plurality of abrasive particles and at least one binder. The apertured attachment interface cooperates with the screen abrasive to allow the flow of particles through the abrasive article.

An abrasive article with an integral dust collection system. The abrasive article comprises a porous abrasive layer with openings, a first filter media with channels, a second filter media, and an attachment interface layer. The openings of the porous abrasive layer cooperate with the channels to allow the flow of particles from the abrasive surface to the second filter media.

Growing community of inventors

Oakdale, MN, United States of America

Charles R Wald