Minnesota Mining and Manufacturing Company

Robert V Heiti

Gary L Holmes

Thomas P Klun

Scott R Culler

William A Hendrickson

Kathryn M Spurgeon

Kimberly K Harmon

Charles J Studiner, Iii

David H Hardy

James J Kobe

Shih-Lai Lu

John D Moon

Forrest J Rouser

Thomas E Boettcher

Maurice E Freeman

John D Munter

Jon R Pieper

Michael V Mucci

Donald M Lewis

Richard M Olson

Yuko Yoshida

Peter J Silbernagel

David A Wallack

Precisely shaped abrasive composites are disclosed. The abrasive composites comprise from 20 to 75 percent by weight at a plurality of abrasive grits and a binder.

Precisely shaped abrasive composite

Precisely shaped composites and methods for making these composites are disclosed. The method of this invention comprises the steps of:

Method of making a coated abrasive article comprising precisely shaped

Coated polymeric sheet comprising polymer substrate a cross-linked polymer, wherein the coating is characterized by:

Process of producing magnetic recording tape having textured backcoat

Precisely shaped particles and method of making the same

Magnetic recording medium having an embossed backcoat layer

Abrasive articles comprising precisely shaped particles are disclosed. The particles are bonded together to form a shaped mass, e.g., a wheel; alternatively, the particles can be bonded to a backing to form a coated abrasive article; or the particles can be bonded into a fibrous, nonwoven substrate to form a non-woven abrasive article.

Abrasive articles comprising precisely shaped particles

A reclosable mechanical fastener comprising a fastening component having a surface structure by which two such fastening components can become releasably attached. The novel fastening component is a composite of a tough substrate and a fastening layer that forms said surface structure, which fastening layer is formed from a cured oligomeric resin composition having one or more like or different hard segments, one or more like or different soft segments, and one or more like or different monovalent moieties containing a radiation-sensitive, addition-polymerizable, function group. The novel fastener forms stronger linkages than were possible with similar fasteners of the prior art.

Reclosable mechanical fastener based on a composite article

A coated abrasive article comprising a backing bearing on at least one major surface thereof abrasive composites comprising a plurality of abrasive grains dispersed in a binder. The binder serves as a medium for dispersing abrasive grains, and it may also bond the abrasive composites to the backing. The abrasive composites have a predetermined shape, e.g., pyramidal. The dimensions of a given shape can be made substantially uniform. Furthermore, the composites are disposed in a predetermined array. The predetermined array can exhibit some degree of repetitiveness. The repeating pattern of a predetermined array can be in linear form or in the form of a matrix. The coated abrasive article can be prepared by a method comprising the steps of: (1) introducing a slurry containing a mixture of a binder and a plurality of abrasive grains onto a production tool; (2) introducing a backing to the outer surface of the production tool such that the slurry wets one major surface of the backing to form an intermediate article; (3) at least partially curing or gelling the binder before the intermediate article departs from the outer surface of the production tool to form a coated abrasive article; and (4) removing said coated abrasive article from the production tool.

Structured abrasive article

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Hudson, WI, United States of America

Robert V Heiti