| 摘要 |
<P>PROBLEM TO BE SOLVED: To solve a problem in which sufficient hardness of cloth for polishing can not be attained and evaluation for polishing could not be satisfied, though it is suggested to increase hardness by carrying out wet coagulation of thermoplastic polyurethane into a nonwoven fabric and then applying various post processings. <P>SOLUTION: The cloth for polishing is obtained by impregnating the nonwoven fabric with a resin. In the cloth for polishing, Shore A hardness at room temperature is ≥90 and the difference of hardness between Shore A hardness in drying state at room temperature and Shore A hardness in wet state at room temperature is small and the difference of harness between Shore A hardness at room temperature and Shore A hardness at heated temperature is small in the wet state. <P>COPYRIGHT: (C)2006,JPO&NCIPI |
