Abrasive articles and method of making the same
US5626639A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Nov 13, 1995 |
| Grant date | May 6, 1997 |
| Priority date | — |
| Expiry date | Nov 13, 2015 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T156/1089
- WIPO fieldMachine tools
- WIPO sectorMechanical engineering
Abstract
An abrasive article is provided which comprises a substrate having a surface bearing and abrasive layer and an opposite surface having a layer of pressure sensitive adhesive and a protective liner covering the layer of pressure sensitive adhesive. The liner includes a lift flap secured thereto which does not extend beyond the perimeter of the liner and has a free portion accessible to finger grip. A method of making an abrasive article is also provided which comprises providing a web having an abrasive layer on one side and a layer of pressure sensitive adhesive on an opposite side and a protective liner covering the layer of pressure sensitive adhesive, providing a strip of lift material having a region bearing an adhesive layer and a non-adhesive region, applying the strip to the liner of the web, and cutting the web and strip to form the abrasive article such that the liner of the abrasive material has a lift flap which does not extend beyond the perimeter of the liner and has a free portion accessible to finger grip.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.