Patent ID: 8557376

Claim:
A polishing pad, comprising: a flexible plastic sheet having a skin layer on a side of a polishing surface for performing polishing processing to an object to be polished, the skin layer being formed of a same composition as the flexible plastic sheet; and an elastic body joined on a surface of the flexible plastic sheet on the opposite side to the polishing surface, wherein both the flexible plastic sheet and the elastic body have foamed structures inside which foams are formed by wet-type film formation, and wherein the flexible plastic sheet has a higher compressibility and a lower A hardness than those of the elastic body, and the elastic body is 1% or more in compressibility and 90 degrees or less in A hardness, and wherein both the flexible plastic sheet and the elastic body are 0.2 mm or more in thickness, the flexible plastic sheet is within a range of 2% to 65% in compressibility and is within a range of 5 degrees to 50 degrees in A hardness.