Abrasive articles and method of making the same
AssigneeMinnesota Mining and Manufacturing Company
InventorWilliam B. King
Life of this patent
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AssigneeMinnesota Mining and Manufacturing Company
InventorWilliam B. King
Estimating the term…
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.
An abrasive article comprising a substrate having a first major surface bearing an abrasive layer and a second major surface having a layer of pressure-sensitive adhesive and a protective liner covering said layer of pressure-sensitive adhesive, the liner having a perimeter coterminous with the perimeter of said substrate in which the liner has a lift flap secured thereto with a greater bond strength therebetween than the bond strength developed between the liner and the pressure-sensitive adhesive, the lift flap not extending beyond the perimeter of the liner and having free portion accessible to finger grip.
A method of making an abrasive article which comprises:
Dependencies are inferred from the claim text.