公开(公告)号：US11981000B2

公开(公告)日：2024-05-14

申请号：US17311139

申请日：2019-12-06

Applicant: 3M INNOVATIVE PROPERTIES COMPANY

Inventor： Junting Li ,  Yuyang Liu ,  Mark A. Lukowski ,  Ernest L Thurber ,  Brian G. Koethe ,  Ann M. Hawkins ,  Geoffrey I. Wilson

IPC: B24D18/00 ,  B24D3/34

CPC classification number: B24D18/0072 ,  B24D3/342 ,  B24D3/346

Abstract: A coated abrasive article comprises a backing having first and second opposed major surfaces. A make layer is bonded to the first major surface. Agglomerate grinding aid particles are directly bonded to the make layer. At least a portion of the agglomerate grinding aid particles comprise grinding aid particles retained in a binder, and are arranged according to an open predetermined pattern. Abrasive particles are directly bonded to the make layer in spaces between the agglomerate grinding aid particles. A size layer is directly bonded to the make layer, agglomerate grinding aid particles, and abrasive particles. A method of making a coated abrasive article, in which the agglomerate grinding aid particles are deposited onto a curable make layer precursor prior to depositing abrasive particles onto the curable make layer precursor in spaces between the agglomerate grinding aid particles is also disclosed.