Method for making a spliceless coated abrasive belt
AssigneeMinnesota Mining and Manufacturing Company
InventorsTodd J. Christianson, Harold W. Benedict
Life of this patent
Estimating the term…
Abstract
A method of making a coated abrasive article and the product thereof, involving the steps of: providing an endless spliceless backing loop substrate; applying fibrous reinforcing material onto a major surface of the endless backing substrate by applying of a first binder precursor to the fibrous reinforcing material such that the first binder precursor bonds the fibrous reinforcing material to the endless backing substrate to form a reinforcing fiber layer; further solidifying the first binder precursor; and forming an abrasive coating on the surface of one of the fiber reinforcing layer, or alternatively, the exposed surface of the backing substrate.
Claims33
A method of making a flexible coated abrasive belt comprising the steps of:
- (a) mounting an endless, spliceless backing loop substrate having an exposed front surface and a back surface tautly on a peripheral surface of a temporary support structure;
- (b) applying a continuous metallic fibrous reinforcing material onto said front surface in a plurality of revolutions;
- (c) applying a coating of a first binder precursor onto said front surface;
- (d) exposing said coating to conditions effective to solidify said first binder precursor and bond said fibrous reinforcing material to said front surface to form an endless spliceless reinforced backing;
- and
- (e) applying an abrasive coating comprising abrasive particles and adhesive over said;
- back surface or said front surface of said endless spliceless reinforced backing.
A method of making a flexible coated abrasive belt comprising the steps of:
- (a) mounting an endless, spliceless backing loop substrate having an exposed front surface and a back surface tautly on a peripheral surface of a temporary support structure;
- (b) at least partially saturating said substrate with a saturant resin precursor;
- (c) at least partially curing said saturant resin precursor;
- (d) applying a coating of a pre-size precursor onto said front surface;
- (e) at least partially curing said pre-size precursor;
- (f) applying a continuous metallic fibrous reinforcing material onto said front surface in a plurality of revolutions;
- (g) applying a coating of a first binder precursor onto said front surface;
- (h) exposing said coating to conditions effective to solidify said first binder precursor and bond said fibrous reinforcing material to said front surface to form an endless spliceless reinforced backing;
- and
- (i) applying an abrasive coating comprising abrasive particles and adhesive over said back surface or said front surface of said endless spliceless reinforced backing.
A method of making a flexible coated abrasive belt comprising the steps of:
- (a) mounting an endless, spliceless backing loop substrate having an exposed front surface and back surface tautly on a peripheral surface of a temporary support structure;
- (b) at least partially saturating said substrate with a saturant resin precursor;
- (c) at least partially curing said saturant resin precursor;
- (d) applying a coating of a pre-size precursor onto said front surface;
- (e) at least partially curing said pre-size precursor;
- (f) applying a fibrous reinforcing layer comprising continuous metallic fibrous reinforcing material and binder material onto said front surface in a plurality of revolutions;
- (g) applying an abrasive coating comprising abrasive particles and adhesive over said back surface or said front surface of said endless spliceless reinforc e d backing.
Dependencies are inferred from the claim text.