Patent ID: 7614110

Claim:
A wet cleaning sheet comprising a liquid retentive sheet made of a fibrous material or a foamed material and impregnated with a predetermined amount of a detergent or a polish, the liquid retentive sheet having a liquid impermeable sheet on one side thereof and a liquid gradual-releasing sheet on the other side thereof, the liquid gradual-releasing sheet being made of a fibrous material and exhibiting an air permeability lower than that of the liquid retentive sheet, wherein the wet cleaning sheet further comprises a sheet with an opening having an area of 5 to 13,000 mm 2 interposed between the liquid retentive sheet and the liquid gradual-releasing sheet, the sheet with an opening having an open area ratio of 1 to 50% based on the area facing the liquid retentive sheet, and wherein the liquid gradual-releasing sheet has an air permeability of 0.05 to 6 m/kPa·s so as to control the gradual release of the detergent or the polish.