3m Innovative Properties Company

Amelia W Koenig

Joseph B Eckel

Ann M Hawkins

Thomas J Nelson

Aaron K Nienaber

Stephen M Sanocki

Yu Yang

Liming Song

Morgan A Priolo

Yaohua Gao

Negus B Adefris

Ernest L Thurber

Yuyang Liu

Junting Li

Saurabh Batra

Aniruddha A Upadhye

Angela S McLEAN

Michelle L Conklin

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

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

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

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

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

An article () has a polyester film backing () and a primer layer () including a carboxylated styrene butadiene copolymer crosslinked with a polyfunctional aziridine disposed on a major surface of the polyester film backing (). Another article includes a polyester backing (), a primer layer () including a carboxylated styrene butadiene copolymer crosslinked with a polyfunctional aziridine disposed on a major surface of the polyester backing (), and a phenolic layer () disposed on the primer layer () on a surface opposite the polyester backing (). The phenolic layer () can include abrasive particles (). Processes for making the articles are also described, as well as methods for abrading a workpiece and improving adhesion between a polyester film backing () and a phenolic layer () on the polyester backing ().

Articles including polyester backing and primer layer and related methods

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.

Growing community of inventors

Minneapolis, MN, United States of America

Amelia W Koenig