Coated abrasive articles and methods of making and using the same
Assignee3M Innovative Properties Company
InventorsAaron K. Nienaber, Joseph B. Eckel, Ronald D. Jesme
Life of this patent
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Abstract
Coated abrasive articles comprises a backing having a major surface with an abrasive layer disposed thereon. The abrasive layer has an outer major surface comprising ridges separated by valleys, wherein the abrasive layer comprises magnetizable particles and abrasive particles in a binder. Each of the ridges is irregularly shaped and is oriented along at least a portion of its length substantially parallel to adjacent ridges. Methods of making the same involving a modulated magnetic field are also disclosed.
Claims20
A coated abrasive article comprising a backing having a major surface with an abrasive layer disposed thereon, wherein the abrasive layer has an outer major surface comprising ridges separated by valleys, wherein the abrasive layer comprises magnetizable particles and abrasive particles dispersed in a binder, wherein the abrasive particles comprise at least one of rods, shaped platelets, or crushed abrasive particles conforming to an abrasives industry specified nominal grade, and wherein each one of the ridges is irregularly shaped, has a length, and is oriented along at least a portion of its said length substantially parallel to adjacent ridges.
A coated abrasive article comprising:
- a backing having a major surface and having a make layer disposed thereon, wherein the make layer has an outer major surface opposite the backing, wherein the outer major surface comprises ridges and valleys, wherein the make layer comprises magnetizable particles, and wherein each one of the ridges is irregularly shaped, has a length, and is oriented along at least a portion of its said length substantially parallel to adjacent ridges;
- and
- abrasive particles secured to the make layer proximate the outer major surface of the make layer.
A method of making a coated abrasive article, the method comprising:
- providing a curable binder precursor layer on a backing, wherein the curable binder precursor layer has an outer major surface opposite the backing, and wherein the curable binder precursor layer comprises magnetizable particles dispersed in a curable binder precursor;
- forming ridges on the outer major surface of the curable binder precursor layer by modulation of at least one magnetic field relative to the backing;
- and
- at least partially curing the curable binder precursor thereby providing an at least partially cured layer, wherein
- the curable binder precursor further comprises abrasive particles dispersed therein;
- or
- the method further comprises adhering abrasive particles to the outer major surface of the curable binder precursor layer before or after forming ridges on the outer major surface of the curable binder precursor layer;
- and
- wherein the abrasive particles comprise at least one of rods, shaped platelets, or crushed abrasive particles conforming to an abrasives industry specified nominal grade.
Dependencies are inferred from the claim text.