Patent ID: 6686023
Filing Date: 2004-02-03
Classification: B24B,B29C,B32B,Y10T

Abstract:
A polished-piece holder for holding polished pieces, comprising:a single sheet of a thermosetting resin impregnated fiber substrate or a laminated sheet formed by laminating a plurality of sheets of the thermosetting resin impregnated fiber substrate; wherein the single sheet or the laminated sheetsubstrate is formed under heat and pressure into a thermosetting resin impregnated fiber plate having a surface layer; wherein the surface layer has over its almost entire area a surface roughness with a maximum wave height Ry of 10 &mgr;m or greater, the maximum wave height Ry being determined in an evaluation portion of a wave curve by summing a height Rp of a highest crest and a depth Rv of a deepest trough from an average line of the wave curve, the wave curve being taken from a cross-sectional curve obtained by a surface roughness measuring device, the evaluation portion having a certain length in a direction of the average line.