Coated abrasive article maker apparatus

Patent metadata

Field	Value
Publication number	US-10675734-B2
Application number	US-201916720381-A
Country	US
Kind code	B2
Filing date	Dec 19, 2019
Priority date	Dec 23, 2013
Publication date	Jun 9, 2020
Grant date	Jun 9, 2020

Abstract

A coated abrasive article maker apparatus is disclosed comprising a first web path comprising a production tool and a second web path configured for a resin coated backing. The second web path is configured to guide the resin coated backing through the coated abrasive article maker apparatus with the resin layer positioned facing the dispensing surface. An abrasive particle feeder is positioned along the first web path and is configured to dispense abrasive particles onto the dispensing surface such that abrasive particles are removably disposed within cavities of the production tool. Abrasive particles are transferred from the plurality of cavities to the resin layer of the resin coated backing when the production tool is positioned adjacent the resin coated backing.

First claim

What is claimed is:

1. A coated abrasive article maker apparatus comprising:
a first web path comprising a production tool, the production tool comprising a carrier member having a dispensing surface and a back surface opposite the dispensing surface, wherein the carrier member comprises a precisely-replicated web or tooling comprising a plurality of cavities formed therein that are complementary in shape and size to the size of abrasive particles to be coated, wherein, on a respective basis, each of the cavities extends into the carrier member from a first opening at the dispensing surface to a second end proximate the back surface, wherein the second end is smaller than the first opening, the first web path configured to guide the production tool through the coated abrasive article maker apparatus;
a second web path configured for a resin coated backing, the resin coated backing comprising a resin layer, the second web path configured to guide the resin coated backing through the coated abrasive article maker apparatus with the resin layer positioned facing the dispensing surface; and
an abrasive particle feeder positioned along the first web path, the abrasive particle feeder configured to dispense abrasive particles onto the dispensing surface and into the plurality of cavities such that the abrasive particles are removably disposed within the cavities of the production tool; and
wherein the coated abrasive article maker apparatus is configured to transfer abrasive particles from the plurality of cavities to the resin layer of the resin coated backing when the production tool is positioned adjacent the resin coated backing.

2. The coated abrasive article maker apparatus of claim 1 wherein at least a portion of the plurality of cavities comprise first, second, third, and fourth consecutive contiguous sidewalls, wherein the first and third sidewalls continuously taper inwardly toward each other and contact each other at a line at the second end, and wherein the second and fourth sidewalls do not contact each other.

3. The coated abrasive article maker apparatus of claim 1 wherein the second end is a second opening at the back surface, and wherein the second opening is smaller than the first opening.

4. The coated abrasive article maker apparatus of claim 3 wherein the carrier member comprises a resilient compressible layer secured to the back surface of the carrier member.

5. The coated abrasive article maker apparatus of claim 4 wherein the resilient compressible layer comprises a plurality of apertures and wherein each of the apertures is aligned with a one of the cavities such that an opening extends from the dispensing surface through the carrier member and through the resilient compressible layer.

6. The coated abrasive article maker apparatus of claim 1 wherein the carrier member comprises at least two longitudinally-oriented raised standoff members disposed on the dispensing surface.

7. The coated abrasive article maker apparatus of claim 1 comprising a filling assist member positioned after the abrasive particle feeder in the direction of travel of the production tool along the first web path configured to move abrasive particles on the dispensing surface into the cavities.

8. The coated abrasive article maker apparatus of claim 7 wherein the filling assist member comprises a brush.

9. The coated abrasive article maker apparatus of claim 1 comprising an abrasive particle removal member positioned after the abrasive particle feeder in the direction of travel of the production tool along the first web path configured to remove excess abrasive particles from the dispensing surface.

10. The coated abrasive article maker apparatus of claim 9 wherein the abrasive particle removal member comprises an air knife configured to blow excess abrasive particles from the dispensing surface.

11. The coated abrasive article maker apparatus of claim 1 wherein the dispensing surface is inclined after the abrasive particle feeder such the elevation of the plurality of cavities increases in the direction of travel of the production tool along the first web path.

12. The coated abrasive article maker apparatus of claim 1 wherein the dispensing surface is inverted as abrasive particles are transferred from the production tool to the resin coated backing.

13. A coated abrasive article maker apparatus comprising:
a production tool comprising a precisely-replicated web or tooling and having a dispensing surface with a plurality of cavities, wherein the plurality of cavities are complementary in shape and size to the size of abrasive particles to be coated, wherein, on a respective basis, each of the cavities extends into the dispensing surface from a first opening at the dispensing surface to a second end, wherein the second end is smaller than the first opening;
a web path for a resin coated backing guiding the resin coated backing through the coated abrasive article maker apparatus with the resin layer positioned facing the dispensing surface; and
an abrasive particle feeder, to dispense abrasive particles onto the dispensing surface and into the plurality of cavities such that the abrasive particles are removably disposed within the cavities of the production tool; and
wherein abrasive particles are transferred from the plurality of cavities to the resin coated backing when the production tool is positioned adjacent the resin coated backing.

Assignees

• 3M Innovative Properties Co

Inventors

• Culler Scott R
• Boden John T
• Keipert Steven J
• Adefris Negus B
• Jindal Karan
• Nienaber Aaron K
• Morrison David L
• Benson Peter T
• Pranay Pratik
• Wright Bradford B

Classifications

• B24D11/001 Primary

  Manufacture of flexible abrasive materials · CPC title

• B24D18/0072

  using adhesives for bonding abrasive particles or grinding elements to a support, e.g. by gluing · CPC title

• B24D3/28

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

• B24D2203/00

  Tool surfaces formed with a pattern · CPC title

• C09K3/1436

  Composite particles, e.g. coated particles · CPC title