Method of splicing endless abrasive belts and cones
AssigneeMinnesota Mining and Manufacturing Company
InventorGlenn E. Roelofs
Life of this patent
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Abstract
Splices of endless abrasive belts and cones can be formed without emission of organic volatiles by employing as the splicing adhesive an aqueous adhesive dispersion that is a blend of a polyurethane and a polyisocyanate crosslinking agent.
Claims2
An endless abrasive belt or cone comprising a length of coated abrasive sheet material which includes a backing, said length of coated abrasive sheet material having first and second ends, the first and second ends spliced together by an adhesive derived from an aqueous adhesive dispersion consisting essentially of polyester polyurethane polymers having backbones, the backbones having a plurality of ionic groups therein, and a crosslinking agent.
Dependencies are inferred from the claim text.