Abrasive article

Patent metadata

Field	Value
Publication number	US-12226877-B2
Application number	US-202017310534-A
Country	US
Kind code	B2
Filing date	Feb 7, 2020
Priority date	Feb 11, 2019
Publication date	Feb 18, 2025
Grant date	Feb 18, 2025

Abstract

The disclosure relates to an abrasive article comprising: a fabric substrate comprising strands forming first void spaces between the strands; a laminate joined to the fabric substrate; a cured resin composition joined to the laminate opposite the fabric substrate; abrasive particles joined to the cured resin composition; and a plurality of second void spaces extending through the laminate coinciding with first void spaces in the fabric substrate. The disclosure also relates to methods of making such abrasive articles.

First claim

What is claimed is:

1. An abrasive article comprising:
a fabric substrate comprising strands forming first void spaces between the strands;
a laminate joined to the fabric substrate;
a cured resin composition joined to the laminate opposite the fabric substrate, wherein the laminate covers a first portion of the first void spaces, and wherein the cured resin composition is above the first portion of the first void spaces;
abrasive particles joined to the cured resin composition; and
a plurality of second void spaces extending through the laminate and coinciding with a second portion of the first void spaces in the fabric substrate.

2. The abrasive article of claim 1 , wherein the laminate at least partially wraps around the strands to leave open the second portion of the first void spaces and the second void spaces.

3. The abrasive article of claim 1 , wherein the laminate avoids the second portion of the first void spaces when cured resin composition is absent above the first void spaces.

4. The abrasive article of claim 1 , wherein the fabric substrate comprises:
a first side joined to the laminate; and
a second side opposite the first side, wherein the second side includes one part of a two-part hook and loop attachment system.

5. The abrasive article of claim 1 , wherein the cured resin composition has a higher melting point than the laminate.

6. The abrasive article of claim 1 , wherein the abrasive particles comprise shaped abrasive particles.

7. The abrasive article of claim 1 , wherein the abrasive particles comprise agglomerate abrasive particles, and wherein the agglomerate abrasive particles comprise shaped abrasive particles.

8. The abrasive article of claim 7 , wherein the agglomerate abrasive particles are arranged in a pattern on the fabric substrate.

9. A method of making the abrasive article of claim 1 , the method comprising:
joining the laminate to the fabric substrate, wherein the fabric substrate comprises strands forming first void spaces between the strands;
joining a curable resin composition to the laminate opposite the fabric substrate;
joining abrasive particles to the curable resin composition; and
curing the curable resin composition to provide the cured resin composition.

10. The method of claim 9 , wherein the curing creates the plurality of second void spaces extending through the laminate coinciding with the second portion of the first void spaces in the fabric substrate.

11. The abrasive article of claim 1 , wherein the cured resin composition comprises the cured product of a phenolic resin.

12. The abrasive article of claim 1 , wherein the laminate comprises a hot-meltable material.

13. The abrasive article of claim 1 , wherein the laminate has a melting temperature that allows it to melt at a cure temperature of the cured resin composition.

14. An abrasive article comprising:
a fabric substrate comprising strands forming first void spaces between the strands;
a laminate joined to the fabric substrate;
a cured product of a resin joined to the laminate opposite the fabric substrate;
abrasive particles joined to the cured resin composition; and
a plurality of second void spaces extending through the laminate coinciding with the first void spaces in the fabric substrate, wherein the resin has a higher melting point than the laminate.

15. The abrasive article of claim 14 , wherein the cured product of the resin comprises the cured product of a phenolic resin.

16. The abrasive article of claim 14 , wherein the laminate at least partially wraps around the strands to leave open the first and second void spaces.

17. The abrasive article of claim 14 , wherein the laminate comprises a hot-meltable material.

18. The abrasive article of claim 14 , wherein the fabric substrate comprises:
a first side joined to the laminate; and
a second side opposite the first side, wherein the second side includes one part of a two-part hook and loop attachment system.

19. The abrasive article of claim 14 , wherein the abrasive particles comprise shaped abrasive particles.

Assignees

• 3M Innovative Properties Company

Inventors

• Martinez Jaime A
• Morel Caroline E
• Li Junting
• Annen Michael J
• Eilers Deborah J
• Billig Daniel A
• Barrios Carlos A
• Frendt Monika E
• Cárdenas Victor A
• Liu Yuyang
• Erickson Dwight D
• Koethe Brian G
• Hawkins Ann M
• Zhang Jing

Classifications

• C09K3/1409

  Abrasive particles per se (preparation of diamond C01B32/25) · CPC title

• B24D18/0072

  using adhesives for bonding abrasive particles or grinding elements to a support, e.g. by gluing · CPC title

• B24D3/28 Primary

  Resins {or natural or synthetic macromolecular compounds (B24D3/22 takes precedence)} · CPC title

• B24D3/007

  the constituent being used as bonding agent between different parts of an abrasive tool · CPC title

• B24D3/002 Primary

  Flexible supporting members, e.g. paper, woven, plastic materials · CPC title