Large denier nonwoven fiber webs

Patent metadata

Field	Value
Publication number	US-11794307-B2
Application number	US-201816608215-A
Country	US
Kind code	B2
Filing date	Apr 20, 2018
Priority date	Apr 28, 2017
Publication date	Oct 24, 2023
Grant date	Oct 24, 2023

Abstract

Various embodiments disclosed relate to an abrasive article. The abrasive article includes a nonwoven web. The non-woven web includes a first irregular major surface and an opposite second irregular major surface. The nonwoven web further includes a fiber component comprising staple fibers having a linear density ranging from about 50 denier to about 2000 denier and a crimp index value ranging from about 15% to about 60%. The nonwoven web further includes a binder dispensed on the fiber component and abrasive particles dispersed throughout the nonwoven web.

First claim

What is claimed is:

1. An abrasive article comprising:
a nonwoven web comprising:
a first irregular major surface and an opposite second irregular major surface, wherein one of the first and second irregular major surfaces comprise a non-planar contour;
a fiber component comprising staple fibers having a linear density ranging from about 50 denier to about 2000 denier and a crimp index value ranging from about 20% to about 40%;
a binder dispensed on the fiber component; and
abrasive particles dispersed throughout the nonwoven web;
wherein the staple fibers comprise a first plurality of smaller denier fibers having a linear density ranging from 50 denier to 500 denier and a second plurality of larger denier fibers having a linear density ranging from greater than 800 denier and up to 2000 denier; and wherein at least one of the first irregular major surface and the second irregular major surface are substantially free of planar agglomerations of the fibers.

2. The abrasive article of claim 1 , wherein the fiber component ranges from about 5 wt % to about 30 wt % of the abrasive article.

3. The abrasive article according to claim 1 , wherein the fiber component ranges from about 10 wt % to about 25 wt % of the abrasive article.

4. The abrasive article according to claim 1 , wherein the staple fibers range from about 70 wt % to about 100 wt % of the fiber component.

5. The abrasive article according to claim 1 , wherein the staple fibers have a length ranging from about 35 mm to about 155 mm.

6. The abrasive article according to claim 1 , wherein at least one of the crimp index and a length of the first plurality of staple fibers differs from the crimp index and a length of the second plurality of staple fibers.

7. The abrasive article according to claim 1 , wherein the fibers are entangled with respect to each other.

8. The abrasive article according to claim 1 , wherein the staple fibers are randomly oriented and adhesively bonded together at points of mutual contact.

9. The abrasive article according to claim 1 , wherein the staple fibers are chosen from a polyester, a nylon, a polypropylene, an acrylic, a rayon, a cellulose acetate, a polyvinylidene chloride-vinyl chloride copolymer, a vinyl chloride-acrylonitrile copolymer, and combinations thereof.

10. The abrasive article of claim 1 , wherein the abrasive particles are at least one of individual abrasive particles and agglomerates of abrasive particles.

11. The abrasive article according to claim 1 , wherein the abrasive article is a wheel.

12. The abrasive article according to claim 1 , wherein the abrasive article is a non-compressed abrasive article.

13. A method of making the abrasive article of claim 1 , comprising:
forming a web of the staple fibers;
perforating the web;
applying the abrasive particles and the binder to the perforated web; and
curing the binder, to provide the abrasive article.

14. The method of claim 13 , wherein the abrasive particles are applied to the first and second irregular major surfaces.

15. A method for removing material from the surface of a workpiece, the method comprising:
contacting an abrasive article according to claim 1 against the workpiece; and
moving the abrasive article relative to the workpiece while maintaining pressure between the abrasive article and the workpiece surface to remove material therefrom.

Assignees

• 3M Innovative Properties Company

Inventors

• Moren Louis S
• Mevissen Scott M
• Mehsikomer Gregory G
• Bell Shawn C
• Stram Gary T

Classifications

• B24D3/004 Primary

  with special coatings · CPC title

• B24D11/001

  Manufacture of flexible abrasive materials · CPC title

• D04H1/413

  containing granules other than absorbent substances · CPC title

• D04H1/43912

  fibres with noncircular cross-sections · CPC title

• D04H1/43918

  nonlinear fibres, e.g. crimped or coiled fibres · CPC title