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US 5,840,089 AGranted
Method of making an abrasive article
AssigneeMinnesota Mining and Manufacturing Company
InventorsJason A. Chesley, Donald R. Bell, Harold E. Rude, William F. Sheffield, David F. Slama, Alan N. Stephens
Life of this patent
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Abstract
A method for making an abrasive article is disclosed, including the steps of providing a substrate having abrasive means on one surface, and providing a plurality of hooking stems on the opposite surface thereof. Several illustrative variations of the inventive method are disclosed.
Claims52
A method of making an abrasive article, comprising the steps of:
- a) forming a substrate having opposed first and second major surfaces, the substrate including a plurality of hooking stems projecting from the first major surface, the hooking stems each including a distal end;
- b) deforming the distal end of each hooking stem to provide each hooking stem with a hooking portion to enable the hooking stem to releasably hook an opposed engaging structure;
- and
- c) bonding a plurality of abrasive particles to the second major surface of the substrate with a bonding material.
1 more element
A method of making an abrasive article, comprising the steps of:
- a) molding a substrate by:
- i) providing a mold having a plurality of cavities formed in the peripheral surface thereof, said cavities adapted to form hooking stems;
- and
- ii) coating a flowable material over the peripheral surface and into the cavities of the mold to form a substrate having a plurality of hooking stems;
- such that the substrate comprises opposed first and second major surfaces and a plurality of hooking stems projecting from the first major surface, the hooking stems each comprising a hooking stem diameter and a distal end;
- b) deforming the distal end of each hooking stem to thereby provide a head on each hooking stem, such that the head has a circular periphery having a diameter at least 0.05 mm greater than the hooking stem diameter to enable the hooking stem to releasably hook an opposed engaging structure;
- and
- c) bonding a plurality of abrasive particles to the second major surface of the substrate with a bonding material.
5 more elements
Dependencies are inferred from the claim text.