Preformed abrasive articles and method for the manufacture...

Abrasive tool making process – material – or composition – Impregnating or coating an abrasive tool

Reexamination Certificate

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Details

C051S298000, C051S307000, C051S308000, C051S309000, C051S297000

Reexamination Certificate

active

06866692

ABSTRACT:
A non-woven abrasive article of interlaced fibers and abrasive particles and a binder which is preformed into a predetermined three dimensional shape and a method for manufacturing the same. The abrasive article is preformed by a thermal setting the abrasive article while it is maintained in a predetermined three dimensional shape or by heating the article to its glass transition temperature and then cooling the article below the glass transition temperature while it is maintained in a predetermined three dimensional shape. This method allows the manufacture of preformed abrasive articles in various three dimensional shapes, including, for example, a bull nosed shape suitable for finishing a concavely curved surface.

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