COATED ABRASIVE SHEET MATERIAL WITH IMPROVED BACKING

摘要

An improved backing (21) for coated abrasive sheet material is provided by a flexible sheet (22) and a multiplicity of weft-free, closely spaced, stretch-resistant, longitudinally aligned, coplanar, continuous filament reinforcing yarns (24) bonded to one surface of the flexible sheet (22). The abrasive coating (25) may be bonded to the flexible sheet (22) over the reinforcing yarns (24) or the reinforcing yarns (24) may be on the opposite side of the flexible sheet (22) as the abrasive coating (25). In a preferred embodiment, the reinforcing yarns (24) are on the opposite side of the flexible sheet (22) from the abrasive layer (25) and a nonwoven web (41) is bonded over the reinforcing yarns (24).