Nonwoven articles comprising abrasive particles

Abstract

A dry nonwoven article comprising a web of fibers and abrasive particles wherein the abrasive particles have a mean solidity below 0.85.

What is claimed is: 
     
         1 . A dry nonwoven article comprising a web of fibers and abrasive particles, wherein the abrasive particles have a mean solidity below about 0.85. 
     
     
         2 . The article according to  claim 1 , wherein the abrasive particles are embedded in the web of fibers. 
     
     
         3 . The article according to  claim 1 , wherein the abrasive particles have a mean solidity between about 0.3 and about 0.8. 
     
     
         4 . The article according to  claim 1 , wherein the abrasive particles have a mean form factor between about 0.1 and about 0.6. 
     
     
         5 . The article according to  claim 1 , wherein the abrasive particles have a mean ECD between about 20 and about 1000 microns and between about 5% and about 100% of the thickness of the web of fibers. 
     
     
         6 . The article according to  claim 1 , wherein the underlying material of the abrasive particles has a mean Shore D® hardness between about 40 and about 90. 
     
     
         7 . The article according to  claim 1 , wherein the web of fibers comprises from about 0.1 to about 10 grams per square meter of abrasive particles. 
     
     
         8 . The article according to  claim 1 , wherein at least about 50% of the abrasive particulate is degradable according to ASTM 6400D. 
     
     
         9 . The article according to  claim 1 , wherein the nonwoven article is made of at least 2 superposing webs of fibers disposed in a face-to-face relationship and the abrasive particles are located at the webs face-to-face interfaces. 
     
     
         10 . The article according to  claim 1 , wherein the abrasive particles are produced from a friable foam material comprising polyurethane, polyisocyanurate, polyphenolic, polyethylene, polypropylene, polyvinyl chloride, polycarbonate, polyacrylate, polystyrene, polyesters, polyamide and mixtures, melamine, urea, minerals and combinations thereof. 
     
     
         11 . The article according to  claim 1 , wherein the abrasive particles have a mean ECD ranging from about 20 to about 1000 microns according to ISO 9276-6. 
     
     
         12 . The article according to  claim 1 , wherein the abrasive particles have a mean ECD from above about 5% to below about 100% of the thickness of the dry substrate 
     
     
         13 . The article according to  claim 1 , wherein the abrasive particles have a HV Vicker hardness from about 20 to about 100. 
     
     
         14 . The article according to  claim 1 , comprising between 2 and 4 web of fibers.