Patent ID: 8895458

Claim:
An abrasive cloth comprising a sheet material comprising polyurethane and having nanofibers of various finenesses made by a melt spinning method of a thermoplastic polymer at least in a surface of the abrasive cloth, the nanofibers of said surface of the abrasive cloth being formed of a napped surface of said nanofibers, the nanofibers having a number average single fiber fineness of all nanofibers in the abrasive cloth of 0.8×10 −5 to 2×10 −4 dtex and the sum of fineness ratios of single fiber finenesses in the range of 0.8×10 −5 to 2×10 −4 dtex of 75% or more, wherein stress at 10% elongation in a longitudinal direction is in the range of 10 to 200 N/cm width, wherein 70% or more of the nanofibers in a single fiber fineness ratio falls within a width of 30 nm in a single fiber diameter difference, and wherein a content of polyurethane is in the range of 20 to 60 wt. % of a fiber weight in the sheet material, and wherein the sheet material is impregnated with polyurethane.