Patent ID: 6733876
Filing Date: 2004-05-11
Classification: B24D,Y10T

Abstract:
A post-cleaned flexible abrasive article comprising:an open cell foam substrate having a decreased propensity for contamination; a cured make coating without undesirable amounts of contaminants on at least a portion of the coatable surfaces of the open cell foam substrate; low contaminant abrasive particles to provide an add-on weight in the range from about 209 to about 628 g/m2 substantially uniformly distributed along the coatable surfaces of the open cell foam substrate and adhered to the cured make coating; and a cured size coating on at least a portion of the abrasive particles; wherein the abrasive article is subjected to a post-cleaning step which results in the article containing less than 300 ppb collectively of extractable lithium, sodium, ammonium, potassium, magnesium, and calcium cations, and less than 500Ã—106 releaseable particles per square meter as measured by a Biaxial Shake Test.