Coated abrasive article

Patent metadata

Field	Value
Publication number	US-2017193874-A1
Application number	US-201515306861-A
Country	US
Kind code	A1
Filing date	Apr 29, 2015
Priority date	May 1, 2014
Publication date	Jul 6, 2017
Grant date	—

Abstract

An electronic device includes a display and a processor coupled to the display. The display includes a plurality of zones distributed over a viewable display area. The processor is configured to obtain source data for the image to be displayed in the viewable area of the display, analyze the source data in selected zones of the plurality of zones to determine at least one characteristic of the image in each selected zone, and adjust, separately in each zone of the plurality of zones, at least one type of subpixel in the subpixel matrix based on determined characteristics of the image in the selected, analyzed zones.

First claim

1 . An abrasive article comprising:
a backing having a major surface, the major surface being a top surface; a make resin contacting the major surface and extending over the major surface in a pre-determined pattern; abrasive particles contacting the make resin and generally in registration with the make resin as viewed in directions normal to the plane of the major surface; a size resin extending over both the major surface and the make resin, the size resin contacting both the abrasive particles and the make resin; and a multiplicity of apertures extending through the abrasive article and distributed over the major surface, wherein substantially all of the apertures are spaced apart from the abrasive particles.

2 . An abrasive article comprising:
a backing having a major surface; and a plurality of discrete islands on the major surface arranged according to a two-dimensional pattern, each island comprising:
a make resin contacting the backing; and
abrasive particles contacting the make resin;
a size resin disposed on the major surface and contacting the make resin, the abrasive particles, and the backing; and a multiplicity of apertures extending through the abrasive article and distributed over the major surface, wherein the apertures avoid contacting substantially all of the abrasive particles.

3 . The abrasive article of claim 1 , further comprising a supersize resin contacting the size resin and generally in registration with the size resin as viewed in directions normal to the plane of the major surface, the supersize resin providing enhanced lubricity.

4 . The abrasive article of claim 1 , wherein the abrasive particles have an average size ranging from 68 micrometers to 270 micrometers and the make resin has a coverage of at most 30 percent.

5 . The abrasive article of claim 4 , wherein the abrasive particles have an average size ranging from 68 micrometers to 270 micrometers and the make resin has a coverage of at most 20 percent.

6 . The abrasive article of claim 5 , wherein the abrasive particles have an average size ranging from 68 micrometers to 270 micrometers and the make resin has a coverage of at most 10 percent.

7 . The abrasive article of claim 1 , wherein the abrasive particles have an average size ranging from 0.5 micrometers to 68 micrometers and the make resin has a coverage of at most 70 percent.

8 . The abrasive article of claim 7 , wherein the abrasive particles have an average size ranging from 0.5 micrometers to 68 micrometers and the make resin has a coverage of at most 60 percent.

9 . The abrasive article of claim 8 , wherein the abrasive particles have an average size ranging from 0.5 micrometers to 68 micrometers and the make resin has a coverage of at most 50 percent.

10 . The abrasive article of claim 1 , wherein the pattern comprises a plurality of replicated clusters of features.

11 . The abrasive article of claim 10 , wherein each cluster has three or more generally circular features arranged in a polygonal shape.

12 . The abrasive article of claim 11 , wherein each cluster has seven generally circular features arranged in a hexagonal shape.

13 . The abrasive article of claim 1 , wherein the pattern is a random array of generally circular features.

14 . The abrasive article of claim 1 , wherein essentially all of the abrasive particles are encapsulated by the combination of the make and size resins.

15 . The abrasive article of claim 1 , wherein the make resin has a coverage of at most 30 percent.

16 . The abrasive article of claim 15 , wherein the make resin has a coverage of at most 10 percent.

17 . A method of making an abrasive article comprising:
applying a make resin to a major surface of a backing; at least partially coating the make resin with abrasive particles whereby the abrasive particles extend across the backing in a pre-determined pattern; hardening the make resin; applying a size resin to the backing along areas coated with the make resin and abrasive particles; hardening the size resin; registering a cutting apparatus to the pre-determined pattern; and using the registration to form a plurality of apertures through the backing, whereby substantially all of the apertures are spaced apart from any coated abrasive particles.

18 . The method of claim 17 , wherein the cutting apparatus is selected from the group consisting of: laser drills, mechanical drills, punches, die cutters, machining mills, and water jet cutters.

19 . The method of claim 18 , wherein the cutting apparatus is a laser drill and wherein forming the plurality of apertures comprises laser drilling the apertures.

20 . The method of claim 17 , wherein registering the cutting apparatus comprises:
placing at least one fiducial marker on the abrasive article at known locations relative to the pre-determined pattern; and recognizing the at least one fiducial marker for use as a frame of reference for the cutting apparatus.

Assignees

• 3M Innovative Properties Co

Inventors

• Laurion Thomas N
• Eilers Deborah J
• Moegenburg Brant A

Classifications

• B24D3/28 Primary

  Resins {or natural or synthetic macromolecular compounds (B24D3/22 takes precedence)} · CPC title

• B24D11/001 Primary

  Manufacture of flexible abrasive materials · CPC title

• G09G3/2085

  Special arrangements for addressing the individual elements of the matrix, other than by driving respective rows and columns in combination · CPC title

• G09G3/3426

  the different display panel areas being distributed in two dimensions, e.g. matrix · CPC title

• G09G3/3611

  Control of matrices with row and column drivers · CPC title