US 12,528,158 B2 · Abrasive article and method of making the same

Abstract

An abrasive article comprises a porous substrate having openings extending through the porous substrate between first and second opposed major surfaces. An abrasive coating is disposed on only a portion of a first major surface of the porous substrate. The abrasive coating comprises a functional layer disposed on only a portion of a first major surface of the porous substrate, a make layer disposed on at least a portion of the functional layer opposite the porous substrate, and abrasive particles. The functional layer and the make layer independently comprise chemically crosslinked binders. The functional layer fully occludes a first portion the openings and does not fully occlude a second portion of the openings, which permits passage of abraded swarf through the abrasive article. Methods of making the abrasive article are also disclosed.

Claims20

Dependent claims

An abrasive article comprising:

a porous substrate having openings extending through the porous substrate between first and second opposed major surfaces;
an abrasive coating disposed on only a portion of a first major surface of the porous substrate, wherein the abrasive coating comprises:
a functional layer disposed on only a portion of a first major surface of the porous substrate, wherein the functional layer comprises a first chemically crosslinked binder, wherein the functional layer is non-contiguous, and wherein the functional layer fully occludes a first portion of the openings and does not fully occlude a second portion of the openings;
a make layer disposed on at least a portion of the functional layer opposite the porous substrate, wherein the make layer comprises a second chemically crosslinked binder composition;
and
abrasive particles dispersed in or partially embedded in the make layer,
wherein the second portion of the openings permits passage of abraded swarf through the abrasive article.

4 more elements

A method of making an abrasive article, the method comprising:

providing a porous substrate having openings extending through the porous substrate between first and second opposed major surfaces;
disposing a crosslinkable functional layer precursor on the first major surface of the porous substrate, wherein the crosslinkable functional layer precursor fully occludes a first portion of the openings and does not fully occlude a second portion of the openings;
crosslinking the crosslinkable functional layer precursor to provide a crosslinked functional layer, wherein the crosslinked functional layer is non-contiguous;
disposing a curable make layer precursor on at least a portion of the crosslinked functional layer opposite the porous substrate;
partially embedding abrasive particles in the curable make layer precursor;
at least partially curing the curable make layer precursor to provide a make layer;
disposing a curable size layer precursor over at least a portion of the make layer and the abrasive particles;
and
at least partially curing the curable size layer precursor to provide the abrasive article,
wherein the second portion of the openings permits passage of abraded swarf through the abrasive article.

7 more elements

Dependencies are inferred from the claim text.

Abrasive article and method of making the same

Life of this patent

Abrasive article and method of making the same

Life of this patent

Abstract

Claims20