초록 ▼

A coated abrasive having a backing and an abrasive layer coated on the first major of the backing, wherein a cross-section of the abrasive layer normal to the thickness and at a center point of the thickness has a total cross-sectional area of abrasive agglomerates which is substantially the same as

A coated abrasive having a backing and an abrasive layer coated on the first major of the backing, wherein a cross-section of the abrasive layer normal to the thickness and at a center point of the thickness has a total cross-sectional area of abrasive agglomerates which is substantially the same as that at a point along the thickness which is 75% of a distance the same as that at a point and the contact side; a coated abrasive article having a bond system with a Knoop hardness number of at least 70; a coated abrasive article comprising abrasive agglomerates in the shape of a truncated four-sided pyramid; a method of making the coated abrasive article; and a method of abrading a hard workpiece using a coated abrasive article.

대표청구항 ▼

[ What is claimed is:] [1.] A coated abrasive article comprising:(a) a low stretch backing having a first major surface; and(b) an abrasive layer coated on the first major surface, the abrasive layer having a contact side adhered to the first major surface, an opposite side, and a thickness which ex

[ What is claimed is:] [1.] A coated abrasive article comprising:(a) a low stretch backing having a first major surface; and(b) an abrasive layer coated on the first major surface, the abrasive layer having a contact side adhered to the first major surface, an opposite side, and a thickness which extends from the contact side to the opposite side, the abrasive layer comprising(i) an organic-based bond system, and(ii) a plurality of abrasive agglomerates adhered in the bond system, each of the agglomerates(1) comprising an inorganic binder and a plurality of abrasive grains, wherein the inorganic binder has a coefficient of thermal expansion which is the same or substantially the same as a coefficient of thermal expansion of the plurality of abrasive grains, and(2) having a substantially uniform size and shape,wherein a cross-section of the abrasive layer normal to the thickness and at a center point of the thickness has a total cross-sectional area of abrasive agglomerates which is substantially the same as that at a point along the thickness which is 75% of a distance between the center point and the contact side.