Jon D Pieper

US Patent:

6929539, Aug 16, 2005

Filed:

Apr 30, 2002

Appl. No.:

10/137134

Inventors:

James W. Schutz - Woodbury MN, US
Stacee L. Royce - St Paul MN, US
Michael J. Annen - Hudson MN, US
Jon R. Pieper - Lindstrom MN, US
Jeffrey D. Sheely - Stillwater MN, US

Assignee:

3M Innovative Properties Company - Saint Paul MN

International Classification:

B24D003/18

US Classification:

451534, 451537

Abstract:

The present invention provides a flexible abrasive product comprised of an open cell foam backing, a foraminous barrier coating and a shaped foraminous abrasive coating. The flexible abrasive article of the invention is made by applying a curable barrier coating over an open cell foam backing, curing the curable barrier coating to provide a foraminous barrier coating having openings therethrough corresponding to openings in the open cell foam, applying a coating composition comprising a curable binder and abrasive particles over the foraminous barrier coating, imparting a textured surface to the coating composition with a production tool which has a textured surface which is the inverse of the textured surface of the abrasive coating and to which production tool textured surface any coating composition coated over an opening of the first major surface may adhere, at least partially curing the binder, and separating the production tool from the textured surface to provide the shaped foraminous abrasive coating.

US Patent:

20050020189, Jan 27, 2005

Filed:

Aug 17, 2004

Appl. No.:

10/919564

Inventors:

Michael Annen - Hudson WI, US
Jon Pieper - Lindstrom MN, US
Jeffrey Sheely - Stillwater MN, US

International Classification:

B24B001/00

US Classification:

451041000, 451526000, 051297000

Abstract:

The present invention provides a flexible abrasive product comprised of an open cell foam backing, a foraminous barrier coating and a shaped foraminous abrasive coating. The flexible abrasive article of the invention is made by applying a curable barrier coating over an open cell foam backing, curing the curable barrier coating to provide a foraminous barrier coating having openings therethrough corresponding to openings in the open cell foam, applying a coating composition comprising a curable binder and abrasive particles over the foraminous barrier coating, imparting a textured surface to the coating composition with a production tool which has a textured surface which is the inverse of the textured surface of the abrasive coating and to which production tool textured surface any coating composition coated over an opening of the first major surface may adhere, at least partially curing the binder, and separating the production tool from the textured surface to provide the shaped foraminous abrasive coating.

US Patent:

20050262773, Dec 1, 2005

Filed:

Jul 12, 2005

Appl. No.:

11/179175

Inventors:

James Schutz - Woodbury MN, US
Stacee Royce - St. Paul MN, US
Michael Annen - Hudson WI, US
Jon Pieper - Lindstrom MN, US
Jeffrey Sheely - Stillwater MN, US

International Classification:

B24D011/00

US Classification:

051297000, 451028000

Abstract:

The present invention provides a flexible abrasive product comprised of an open cell foam backing, a foraminous barrier coating and a shaped foraminous abrasive coating. The flexible abrasive article of the invention is made by applying a curable barrier coating over an open cell foam backing, curing the curable barrier coating to provide a foraminous barrier coating having openings therethrough corresponding to openings in the open cell foam, applying a coating composition comprising a curable binder and abrasive particles over the foraminous barrier coating, imparting a textured surface to the coating composition with a production tool which has a textured surface which is the inverse of the textured surface of the abrasive coating and to which production tool textured surface any coating composition coated over an opening of the first major surface may adhere, at least partially curing the binder, and separating the production tool from the textured surface to provide the shaped foraminous abrasive coating.

US Patent:

55758738, Nov 19, 1996

Filed:

Aug 6, 1991

Appl. No.:

7/740706

Inventors:

Jon R. Pieper - Lindstrom MN
Donald C. Heinn - Maplewood MN
Eric G. Larson - Lake Elmo WA
Thomas E. Boettcher - Hastings MN

Assignee:

Minnesota Mining and Manufacturing Company - St. Paul MN

International Classification:

B32B 3100

US Classification:

156153

Abstract:

Endless coated abrasive articles having a splice. In general, the coated abrasive articles comprise a backing having abrasive grains bonded thereto by one or more layers of binder. This invention also provides a method of making the splice by using radiation curable adhesives, e. g. , acrylated urethanes, and radiation energy to cure the adhesives. The radiation curable splice adhesive essentially solvent-free. Consequently, the time required for the solvent to flash off is eliminated and solvent removal is no longer an environmental concern. By utilizing a source of radiation energy, the splice adhesive can be solidified in less than one minute. Because the splice adhesive is fully solidified, coated abrasive belts can be packaged immediately after the splice is formed.

US Patent:

51529173, Oct 6, 1992

Filed:

Feb 6, 1991

Appl. No.:

7/651660

Inventors:

Jon R. Pieper - Lindstrom MN
Richard M. Olson - Stillwater MN
Michael V. Mucci - Hudson WI
Gary L. Holmes - Vadnais Heights MN
Robert V. Heiti - St. Paul MN

Assignee:

Minnesota Mining and Manufacturing Company - St. Paul MN

International Classification:

B24D 300
B24D 1104

US Classification:

51295

Abstract:

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.

US Patent:

53042239, Apr 19, 1994

Filed:

Mar 8, 1993

Appl. No.:

8/029302

Inventors:

Jon R. Pieper - Lindstrom MN
Richard M. Olson - Stillwater MN
Michael V. Mucci - Hudson WI
Gary L. Holmes - Vadnais Heights MN
Robert V. Heiti - St. Paul MN

Assignee:

Minnesota Mining and Manufacturing Company - St. Paul MN

International Classification:

B24D 300

US Classification:

51293

Abstract:

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.

US Patent:

53782518, Jan 3, 1995

Filed:

Sep 13, 1993

Appl. No.:

8/121110

Inventors:

Scott R. Culler - Burnsville MN
Gregory A. Berg - Lindstrom MN
Jon R. Pieper - Lindstrom MN
Richard M. Olson - Stillwater MN

Assignee:

Minnesota Mining and Manufacturing Company - St. Paul MN

International Classification:

B24D 302

US Classification:

51295

Abstract:

An abrasive article is presented which includes a backing having a front and back surface, and an abrasive coating bonded to the front surface of the backing. The abrasive coating comprises a homogeneous mixture of a plurality of abrasive particles, a binder and a grinding aid. The binder serves to bond the abrasive coating to the backing and the grinding aid comprises at least 1% by weight of the abrasive coating, but not more than 50% by weight. It is preferred that the abrasive coating consists essentially of a plurality of precisely shaped abrasive composites. Methods of making and using the abrasive articles are also presented.