Method of making an abrasive article comprising abrasive agglomerates supported in a fibrous matrix
AssigneeMinnesota Mining and Manufacturing Company
InventorsRaymond F. Heyer, William R. Lovness
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Abstract
An abrasive article comprising a plurality of separated abrasive agglomerates distributed within a matrix of undulated filaments is provided. The invention also provides a method of making an abrasive article comprising forming, within a lofty open web comprising undulated filaments bonded at points of mutual contact, a plurality of separated abrasive agglomerates to provide an abrasive agglomerate-impregnated web. Articles may be prepared of the agglomerate-impregnated web per se or by laminating layers of the web together preferably under pressure. Exemplary articles include abrasive wheels, discs, belts, sheets, blocks and the like.
Claims3
A method of making an abrasive article, said method comprising the steps of
- forming within a lofty web comprising undulated filaments bonded at points of mutual contact by depositing in a pattern with an appropriate printing or extruding device a plurality of separated agglomerates formed of a mixture of uncured liquid curable bonding agent and abrasive particles, said agglomerates having an average particle size of at least 2 mm to provide an agglomerate-impregnated web;
- and
- curing said bonding agent to convert said agglomerates to abrasive agglomerates comprising abrasive particles bonded together with said bonding agent, said bonding agent and said abrasive particles being selected to provide an abrasive particle to bonding agent weight ratio of about 1:1 to 20:1.
Dependencies are inferred from the claim text.