3m Innovative Properties Company

Brant A Moegenburg

Thomas J Nelson

Aaron K Nienaber

Joseph B Eckel

Thomas P Hanschen

Steven J Keipert

Eric M Moore

Erin D Spring

Albert I Everaerts

Scott R Culler

Mahfuza B Ali

Ernest L Thurber

John T Boden

Brian G Koethe

Charles R Wald

Schoen A Schuknecht

Rebecca A Putans

Ibrahim A El-Hedok

Timothy T Beyer

Mark A Swanson

Wayne W Maurer

A coated abrasive disc includes a disc backing having an outer circumference. An abrasive layer is disposed on the disc backing. The abrasive layer comprises triangular abrasive platelets secured to a major surface of the disc backing by at least one binder material. The triangular abrasive platelets are outwardly disposed at regularly-spaced points along a spiral pattern extending outwardly toward the outer circumference. Each triangular abrasive platelet has respective top and bottom surfaces connected to each other, and separated by, three sidewalls. On a respective basis, one sidewall of at least 90 percent of the triangular abrasive platelets is disposed facing and proximate to the disc backing, and at least 70 percent of the triangular abrasive platelets are disposed in a recurring sequential orientation having an oscillating Z-axis rotational orientation of the first respective sidewall relative to the tangents to the spiral pattern at regularly-spaced points. Methods of making and using the coated abrasive disc are also disclosed.

Coated abrasive disc and methods of making and using the same

A coated abrasive disc includes a disc backing and an abrasive layer disposed thereon. The abrasive layer comprises abrasive elements secured to a major surface of the disc backing by at least one binder material. The abrasive elements are disposed at contiguous intersections of horizontal and vertical lines of a rectangular grid pattern. Each abrasive element has two triangular abrasive platelets, each having respective top and bottom surfaces connected to each other, and separated by, three sidewalls. On a respective basis, one sidewall of the triangular abrasive platelets is disposed facing and proximate to the disc backing. A first portion of the abrasive elements is arranged in alternating first rows wherein the triangular abrasive platelets are disposed lengthwise aligned with the vertical lines. A second portion of the abrasive elements is arranged in alternating second rows wherein the triangular abrasive platelets are disposed lengthwise aligned with the horizontal lines. The first and second rows repeatedly alternate along the vertical lines. Methods of making and using the coated abrasive disc are also disclosed.

Coated abrasive belt

Coated abrasive disc

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.

Abrasive article and method of making the same

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

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Baldwin, WI, United States of America

Brant A Moegenburg