# US 9,434,051 B2 · Nonwoven abrasive articles made by friction welding > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 9,434,051 B2 - Document ID: US9434051B2 - Status: Granted - Kind: B2 - Application number: 14/568,510 - Filed: 2014-12-12 - Published: 2015-07-02 - Granted: 2016-09-06 - Earliest claimed: 2013-12-27 - Assignees: Saint-Gobain Abrasives, Inc.; Saint-Gobain Abrasifs - Applicants: Saint-Gobain Abrasives, Inc.; Saint-Gobain Abrasifs - Inventors: Shyiguei Hsu; Dan M. Villareal; Julienne C. LaBrecque; Scott Kilinski; Vivek Cheruvari Kottieth Raman; Anuj Seth; Jane Chen-Liang; Fernando J. Ramirez; Victor D. Perez - Web page: https://patentgrep.com/patent/US9434051B2 ## CPC - B24D 13/147: {comprising assemblies of felted or spongy material; comprising pads surrounded by a flexible material} - B24D 18/0072: {using adhesives for bonding abrasive particles or grinding elements to a support, e.g. by gluing} - B24D: TOOLS FOR GRINDING, BUFFING OR SHARPENING (abrading-bodies specially designed for tumbling apparatus, e.g. abrading-balls B24B31/14; honing tools B24B33/08; lapping tools B24B37/11) ## Abstract An abrasive article comprising a nonwoven substrate material having a top surface and a bottom surface; a woven cloth; a thermoplastic fastener; and a plurality of abrasive particles, wherein the cloth layer is adhered to the top surface of the nonwoven substrate material; wherein the thermoplastic fastener is disposed on the cloth, and wherein the plurality of abrasive particles are disposed on at least the bottom surface of the nonwoven abrasive substrate. ## Claims ### Claim 1 An abrasive article comprising: a nonwoven abrasive substrate having a top surface and a bottom surface; a thermoplastic fastener; and a plurality of abrasive particles, wherein the thermoplastic fastener is disposed on the top surface of the nonwoven abrasive substrate, wherein the plurality of abrasive particles are disposed on at least the bottom surface of the nonwoven abrasive substrate, and wherein the thermoplastic fastener is melt bonded to the top of the nonwoven substrate. ### Claim 2 (depends on 1) The abrasive article of claim 1, wherein the abrasive particles are dispersed throughout the non-woven substrate. ### Claim 3 (depends on 1) The abrasive article of claim 1, wherein the abrasive particles are disposed on the nonwoven substrate as an abrasive slurry. ### Claim 4 (depends on 1) The abrasive article of claim 1, wherein the nonwoven substrate is coated with a polymer composition. ### Claim 5 (depends on 1) The abrasive article of claim 1, wherein the nonwoven substrate is impregnated with a polymer composition. ### Claim 6 (depends on 1) The abrasive article of claim 1, wherein the nonwoven substrate is a unified wheel. ### Claim 7 (depends on 1) The abrasive article of claim 1, further comprising a melt bond, wherein the melt bond comprises previously melted and re-solidified material of the thermoplastic fastener. ### Claim 8 (depends on 1) The abrasive article of claim 1, wherein the thermoplastic fastener is melt bonded directly to the top surface of the nonwoven substrate. ### Claim 9 An abrasive article comprising: a nonwoven substrate material having a top surface and a bottom surface; a woven cloth; a thermoplastic fastener; and a plurality of abrasive particles, wherein the cloth is adhered to the top surface of the nonwoven substrate material; wherein the cloth has an open area of less than 5%; wherein the thermoplastic fastener is disposed on the cloth, and wherein the plurality of abrasive particles are disposed on at least the bottom surface of the nonwoven abrasive substrate. ### Claim 10 (depends on 9) The abrasive article of claim 9, wherein the thermoplastic fastener component is friction welded to the cloth layer. ### Claim 11 (depends on 10) The abrasive article of claim 10, wherein the friction weld of the thermoplastic component does not penetrate through the cloth layer. ### Claim 12 (depends on 10) The abrasive article of claim 10, wherein the friction weld has a tensile strength of at least 120 lbs. ### Claim 13 (depends on 1) The abrasive article of claim 1, wherein the nonwoven abrasive substrate comprises staple fibers of polyester, cotton, polycotton, or a combination thereof. ### Claim 14 (depends on 3) The abrasive article of claim 3, wherein the staple fibers have a size in a range of 500 denier to 15 denier. ### Claim 15 (depends on 3) The abrasive article of claim 3, wherein the nonwoven substrate has an area density of 600 grams per square meter to 90 grams per square meter. ### Claim 16 (depends on 9) The abrasive article of claim 9, wherein the cloth has an area density in a range of 450 to 150 grams per square meter. ### Claim 17 A method of forming an abrasive article comprising the steps of: disposing a thermoplastic fastener onto a nonwoven material substrate, inducing relative motion between the fastener component and the nonwoven material substrate, contacting the fastener component and the nonwoven material substrate together under pressure, maintaining the relative motion under pressure between the fastener and the nonwoven material substrate sufficient to cause the fastener and nonwoven material substrate to become melt bonded together, and stopping the relative motion between the fastener and the nonwoven material substrate. ### Claim 18 A method of forming an abrasive article comprising the steps of: disposing a thermoplastic fastener onto a cloth that is adhered to the top surface of a nonwoven substrate material; inducing relative motion between the fastener component and the cloth, contacting the fastener component and the cloth together under pressure, maintaining the relative motion under pressure between the fastener and the cloth sufficient to cause the fastener and cloth to become melt bonded together, and stopping the relative motion between the fastener and the cloth, wherein the cloth has an open area of less than 5%.