Method of making composite abrasive filaments
AssigneeMinnesota Mining and Manufacturing Company
InventorsLoren L. Barber, Jr., Dennis G. Welygan, Richard M. Pihl
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Abstract
A method of making a composite abrasive filament, said filament including at least one preformed core at least partially coated with a hardened, abrasive-filled thermoplastic elastomer, and exhibiting increased abrading life over previously known abrasive filaments. Also disclosed are methods of using such filaments in article form to abrade a variety of workpieces.
Claims6
A method of making a composite abrasive filament comprising at least one preformed core at least partially coated with a hardened composition comprising a thermoplastic elastomer and abrasive particles, said abrasive particles dispersed and adhered in the thermoplastic elastomer, said method comprising:
- (a) rendering a thermoplastic elastomer molten and combining abrasive particles therewith;
- (b) coating at least a portion of a preformed core with a coating comprising the molten thermoplastic elastomer and abrasive particles;
- and
- (c) cooling the coating to a temperature sufficient to harden the molten thermoplastic elastomer to form the hardened composition.
Dependencies are inferred from the claim text.