PURPOSE: To obtain the non-woven fabric excellent in hydrolysis resistance, holding the strength of the fibers, good in hand and drape, and having a stable non-woven fabric performance by using a copolyester produced from terephthalic acid and specific diol components.
CONSTITUTION: Terephthlaic acid is polycondensed with diols consisting of ethylene glycol and 3-50mol.% of a 2,2-≥2C alkyl-substituted 1,3-propanediol (especially the alkyl group is ethyl, propyl, butyl or pentyl group) in the presence of a catalyst to produce a copolyester having an intrinsic viscosity of 0.2-1.0. The copolyester is thermally melted, e.g. without being dried, and subsequently spun by a regular method, a melt-blowing method or a spun-bonding method using a mono component type, a parallel conjugate type, a sheath-core conjugate type, a multi-splitting conjugate type or a sea-island conjugate type spinneret into the polyester non-woven fabric.
HANZAWA FUSAO
IDE SEIJI
TAKAHASHI ATSUSHI
