POLISHING DEVICE FOR PLATE

摘要

PROBLEM TO BE SOLVED: To provide a polishing device for obtaining a plate glass superior in flatness by evenly polishing the whole surface of a plate glass requiring special rigorous surface accuracy such as a glass substrate for liquid crystal. SOLUTION: A stage part 25c is formed on a peripheral edge of a surface on a PET sheet side of a cushioning material, and the surface is affixed to a holding surface plate 24 with a double coated adhesive tape. The stage part 25c is comprised of a polyurethane resin and formed by screen printing so as to continuously incline downward toward an inner part of a cushioning material 25. A plate glass material is held on a surface of a polyurethane foam layer 25b side.