Patent ID: 7094462

Claim:
An uneven wiping sheet having pores and comprising an uneven base material on which powder is supported and in which an aqueous medium is impregnated, wherein the base material is impregnated with from 50 to 500% by weight of the aqueous medium and wherein the powder is supported on the surface or in the vicinity of the surface of the sheet and wherein the ratio of the average pore diameter (D) of the surface of said base material while dry as measured by the mercury penetration method to the average particle diameter (d) of said powder, D/d, ranges from 0.03 to 30, said base material while dry has a bulk softness of from 0.1 to 5 N/30 mm and a thickness of from 0.3 to 5 mm, said average pore diameter (D) ranges from 0.1 to 30 μm, said average particle diameter ranges from 1 to 30 μm, said base-material has a multi-ply structure comprising two or more single-ply webs of the same kind or different kinds, each web contains cellulosic fibers and thermoplastic resin fibers, and said thermoplastic resin fibers contained in adjacent plies of said webs are partially press bonded or fusion bonded to form a joint area wherein the uneven base material is formed by embossing using a matched pair of steel rolls wherein said cellulosic fiber comprises pulp, and said aqueous medium contains polyethylene glycol in a concentration of 0.5 to 5% by weight and wherein 40% or more of the supported powder is transferred to an object of wiping when the object is wiped with said wiping sheet.