Nonwoven abrasive article with wax antiloading compound and method of using the same

Patent metadata

Field	Value
Publication number	US-2016229032-A1
Application number	US-201415022290-A
Country	US
Kind code	A1
Filing date	Sep 4, 2014
Priority date	Sep 16, 2013
Publication date	Aug 11, 2016
Grant date	—

Abstract

A nonwoven abrasive article includes: a lofty open nonwoven fiber web, an abrasive layer bonded to the lofty open nonwoven fiber web, and a peripheral antiloading composition disposed on the abrasive layer. The peripheral antiloading composition comprises at least 50 percent by weight of wax having a melting point onset of from 180° F. (82° C.) to 290° F. (143° C.). A method of abrading a workpiece using the nonwoven abrasive article is also disclosed.

First claim

What is claimed is:

1 . A nonwoven abrasive article comprising:
a lofty open nonwoven fiber web comprising intertwined fibers; an abrasive layer bonded to at least a portion of the lofty open nonwoven fiber web, the abrasive layer comprising abrasive particles retained in a binder composition; and a peripheral antiloading composition at least partially disposed on the abrasive layer, wherein the peripheral antiloading composition comprises at least 50 percent by weight of wax, wherein the wax has a melting point onset in the range of from 180° F. (82° C.) to 290° F. (143° C.).

2 . A nonwoven abrasive article according to claim 1 , wherein the peripheral antiloading composition comprises at least 95 percent by weight of the wax.

3 . A nonwoven abrasive article according to claim 1 , wherein the peripheral antiloading composition comprises at least 99 percent by weight of the wax.

4 . A nonwoven abrasive article according to claim 1 , wherein the wax comprises a microcrystalline polyethylene wax.

5 . A nonwoven abrasive article according to claim 1 , wherein the peripheral antiloading coating further comprises a binder material.

6 . A nonwoven abrasive article according to claim 1 , wherein the peripheral antiloading coating contains less than 20 percent by weight of fatty acid metal salts, ammonium salts, and boronic esters, boronic acids, amines, phosphine oxides, sulfones, sulfates, sulfonates, sulfoxides, and ammonium compounds combined.

7 . A nonwoven abrasive article according to claim 1 , wherein the peripheral antiloading coating contains less than 20 percent by weight of fluorine.

8 . A method of abrading a workpiece, the method comprising:
frictionally contacting a nonwoven abrasive article with a workpiece, wherein the nonwoven abrasive article comprises: a lofty open nonwoven fiber web comprising intertwined fibers; an abrasive layer bonded to at least a portion of the lofty open nonwoven fiber web, the abrasive layer comprising abrasive particles retained in a binder composition; and a peripheral antiloading composition at least partially disposed on the abrasive layer, wherein the peripheral antiloading composition comprises at least 50 percent by weight of wax, wherein the wax has a melting point onset in the range of from 180° F. (82° C.) to 290° F. (143° C.); and moving the nonwoven abrasive article relative to the workpiece thereby abrading the workpiece.

Assignees

• 3M Innovative Properties Co

Inventors

• Moren Louis S
• Mevissen Scott M
• Woo Edward J
• Kaur Jasmeet

Classifications

• B24D3/34 Primary

  characterised by additives enhancing special physical properties, e.g. wear resistance, electric conductivity, self-cleaning properties · CPC title

• B24D3/00

  Physical features of abrasive bodies, or sheets, e.g. abrasive surfaces of special nature; Abrasive bodies or sheets characterised by their constituents · CPC title

• B24D11/00 Primary

  Constructional features of flexible abrasive materials; Special features in the manufacture of such materials · CPC title

• B24D11/02

  Backings, e.g. foils, webs, mesh fabrics · CPC title

• B24B1/00

  Processes of grinding or polishing; Use of auxiliary equipment in connection with such processes · CPC title