公开(公告)号：US20200164484A1

公开(公告)日：2020-05-28

申请号：US16636348

申请日：2018-08-02

Applicant: 3M INNOVATIVE PROPERTIES COMPANY

Inventor： Kenneth A.P. Meyer ,  John J. Sullivan ,  Brian W. Lueck ,  Duy K. Lehuu ,  David J. Muradian ,  David F. Slama

IPC: B24B37/26 ,  B24B37/22

Abstract: An article includes a polishing layer that includes a plurality of raised cells separated by a plurality of channels. Each of the plurality of raised cells includes a microstructured working surface, a substantially vertical channel surface, and an offset surface between an edge of the working surface and an upper edge of the channel surface. The microstructured working surface includes a plurality of microstructures. Tops of the plurality of microstructures define a top plane and bases of the plurality of microstructures define a base plane. The substantially vertical channel surface defines a wall of a channel of the plurality of channels and the channel surface defines a channel plane. The offset surface includes a nonplanar portion of displaced material. The displaced material defines a displacement plane that is below the base plane or within a tolerance of the top plane.

公开(公告)号：US20200070314A1

公开(公告)日：2020-03-05

申请号：US16611340

申请日：2018-05-04

Applicant: 3M INNOVATIVE PROPERTIES COMPANY

Inventor： Paul D. Graham ,  Douglas A. Davis ,  Thomas E. Pahl ,  John G. Petersen ,  Graham M. Clarke ,  James J. Kobe ,  Thomas B. Galush ,  Charles R. Wald ,  Brian W. Lueck

IPC: B24D11/00 ,  B24D11/02 ,  B32B27/08 ,  B32B3/18 ,  B29C59/04

Abstract: Various embodiments disclosed relate to an abrasive sheet. The abrasive sheet includes a first layer including an abrasive major surface and an opposite second layer defining a second major surface. The second major surface includes a plurality of protrusions extending outwardly from the second major surface. The protrusions include a first polymer component having at least one of a Shore A hardness ranging from about 5 to about 100 and a Shore D hardness ranging from about 1 to about 70. The first layer and the second layer are directly joined to each other.