Abrasive tools and methods for forming same

Patent metadata

Field	Value
Publication number	US-10189146-B2
Application number	US-201715810410-A
Country	US
Kind code	B2
Filing date	Nov 13, 2017
Priority date	Dec 30, 2014
Publication date	Jan 29, 2019
Grant date	Jan 29, 2019

Abstract

An abrasive tool can include a bonded abrasive including a body and a barrier layer bonded to a major surface of the body. The body can include abrasive particles contained within a bond material. The barrier material can include a metal-containing film. In an embodiment, the barrier layer may further include a polymer-containing film. In another embodiment, the barrier layer may include a biaxially oriented material. The abrasive tool may be formed such that the barrier layer is formed in-situ with the formation of the bonded abrasive.

First claim

What is claimed is:

1. An abrasive tool comprising:
a bonded abrasive including a body comprising abrasive particles contained within a bond material, wherein the body comprises a second major surface opposite a first major surface, and a peripheral surface extending between the first major surface and the second major surface; and
a barrier layer directly bonded to the first major surface and second major surface of the body, the barrier layer comprising a first polymer including a biaxially-oriented material.

2. The abrasive tool of claim 1 , wherein the barrier layer overlies at least a portion of the peripheral surface.

3. The abrasive tool of claim 1 , wherein the barrier layer comprises a first polymer-containing film including the first polymer overlying a metal-containing film.

4. The abrasive tool of claim 1 , wherein the barrier layer comprises a first polymer-containing film including the first polymer overlying a metal foil.

5. The abrasive tool of claim 1 , wherein the barrier layer comprises a first polymer-containing film including the first polymer and a second polymer-containing film including a second polymer underlying the first polymer-containing film, wherein the second polymer is different from the first polymer.

6. The abrasive tool of claim 5 , wherein the second polymer-containing film is bonded directly to the major surface of the body.

7. The abrasive tool of claim 1 , wherein the first polymer is selected from the group consisting of a thermoplastic and a thermoset.

8. The abrasive tool of claim 1 , wherein the first polymer is selected from the group consisting of polyamides, polyesters, polyethlyenes, polypropylene, polyvinyls, epoxies, resins, polyurethanes, rubbers, polyimides, phenolics, polybenzimidazole, aromatic polyamide, and a combination thereof.

9. The abrasive tool of claim 1 , wherein the first polymer comprises polyester, polypropylene, polyamide, or a combination thereof.

10. The abrasive tool of claim 1 , wherein the biaxially-oriented material comprises biaxially-oriented polyethylene terephthalate.

11. The abrasive tool of claim 1 , wherein the biaxially-oriented material comprises biaxially-oriented nylon.

12. The abrasive tool of claim 1 , wherein the barrier layer comprises a plurality of films, wherein the outermost film comprises the first polymer.

13. The abrasive tool of claim 12 , wherein the barrier layer comprises a metal-containing film, a first polymer-containing film including the first polymer, and a second polymer-containing film, wherein the metal-containing film is disposed between the second polymer-containing film and the first polymer-containing film.

14. The abrasive tool of claim 1 , wherein the barrier layer comprises a perforation density across a surface of the barrier layer within a range of 0.1 perforations/cm 2 to 200 perforations/cm 2 .

15. An abrasive tool comprising:
a bonded abrasive including a body comprising abrasive particles contained within a bond material, wherein the body comprises a second major surface opposite the first major surface, and a peripheral surface extending between the first major surface and the second major surface; and
a barrier layer directly bonded to at least the first major surface and the second major surface of the body, the barrier layer comprising a first polymer-containing film including a biaxially-oriented material and a metal-containing film underlying the first polymer-containing film.

16. The abrasive tool of claim 15 , wherein the barrier layer comprises a second polymer-containing film directly bonded to the major surface of the body, wherein the second polymer-containing film comprises a second polymer that is different from the biaxially-oriented material.

17. The abrasive tool of claim 15 , wherein the first polymer-containing film comprises polyester, polypropylene, polyamide, or a combination thereof.

18. The abrasive tool of claim 15 , wherein the metal-containing film comprises aluminum.

19. An abrasive tool comprising:
a bonded abrasive including a body comprising abrasive particles contained within a bond material, wherein the body comprises a first major surface, a second major surface opposite the first major surface, and a peripheral surface extending between the first major surface and the second major surface; and
a barrier layer directly bonded to at least the first major surface of the body,
wherein the barrier layer comprises a plurality of films, and an outermost film of the barrier layer comprises a polymer including a biaxially-oriented material.

20. The abrasive tool of claim 1 , wherein the barrier layer comprises a metal foil, and first polymer-containing film including the first polymer, and a second polymer-containing film, wherein the metal foil is disposed between the second polymer-containing film and the first polymer-containing film, wherein the outermost film comprises the first polymer.

Assignees

• Saint Gobain Abrasives Inc
• Saint Gobain Abrasifs Sa

Inventors

• Pacella Nan Y
• Lavallee Jr Lawrence J
• Montgomery Michael K
• Sahlin Katherine M

Classifications

• B24D3/001

  the constituent being used as supporting member · CPC title

• B24D18/00 Primary

  Manufacture of grinding tools {or other grinding devices}, e.g. wheels, not otherwise provided for · CPC title

• B24D5/02

  Wheels in one piece · CPC title

• B24D5/12

  Cut-off wheels · CPC title

• B24D18/0009

  using moulds or presses · CPC title