| 摘要 |
PROBLEM TO BE SOLVED: To produce a staple fiber nonwoven fabric excellent in mechanical properties. SOLUTION: This staple fiber nonwoven fabric is composed of 30-90wt.% of the major fiber made of a thermoplastic polymer and 70-10wt.% of a binder fiber constituted with a polyester satisfying the followings: (1) 7-70mol% of its aromatic dicarboxylic acid component is phthalic acid, 70-95mol% of the glycol component is ethylene glycol and 30-5mol% is diethylene glycol, (2) the sum total mol% of the phthalic acid component based on the total acid components and the diethylene glycol component based on the total glycol component is 16-110. (3) the intrinsic viscosity is >=0.35, and (4) b-value is <=13 in the color tone measurement. |
