公开(公告)号：US09700994B2

公开(公告)日：2017-07-11

申请号：US14654124

申请日：2013-12-19

Applicant: 3M INNOVATIVE PROPERTIES COMPANY

Inventor： Masashi Nakayama ,  Yuji Ohnuma

IPC: B24D13/00 ,  B24D13/08 ,  B24B29/00

CPC classification number: B24D13/08 ,  B24B29/00

Abstract: A nonwoven fabric polishing roll having a through hole into which a rotating shaft of a polishing machine is inserted, that includes a polishing portion formed by stacking a plurality of circular nonwoven fabrics having an aperture that forms the through hole; and two circular support plates located one at each of both ends in the stacking direction of the polishing portion, having an aperture that forms the through hole, and having an external diameter that is substantially the same as that of the circular non-woven fabric; wherein, the circular support plates include nonwoven fabric that is hardened in a compressed state.

公开(公告)号：US20220080556A1

公开(公告)日：2022-03-17

申请号：US17416784

申请日：2019-12-23

Applicant: 3M INNOVATIVE PROPERTIES COMPANY

Inventor： Michihiro Yamahara ,  Naohiro Nagafuchi ,  Mayumi Yoshikawa ,  Masashi Nakayama ,  Shoichi Masuda

IPC: B24D13/04 ,  B24D18/00

Abstract: Object: To provide a grinding wheel and a method of manufacturing a grinding wheel having added value while providing a suppressed manufacturing cost. Solution Means: The grinding wheel is a grinding wheel including an abrasive portion including nonwoven fabric, wherein the abrasive portion includes an outer peripheral portion formed with the nonwoven fabric including abrasive grains on an outer peripheral side, and an inner peripheral portion formed with the nonwoven fabric not including the abrasive grains, and a ratio of a thickness in a radial direction of the outer peripheral portion to a thickness in a radial direction of the abrasive portion is from 3% to 60%.