| 摘要 |
PROBLEM TO BE SOLVED: To provide a method for producing an ultra fine filament nonwoven fabric, by which the opening property of peel-division type conjugated filaments comprising a thermoplastic elastomer and a polyamide-based polymer can be improved to easily produce the high quality ultra fine filament nonwoven fabric having excellent uniformity. SOLUTION: This method for producing the ultra fine filament nonwoven fabric is characterized by forming a filament nonwoven fabric, for example, by a spun bond method, from peel-division type conjugated filaments comprising a polyamide-based polymer and a thermoplastic elastomer containing a polybutylene terephthalate-based polyester in an amount of 5 to 30 wt.%, and then subjecting the filament nonwoven fabric to a division treatment to divide the peel-division type conjugated filaments into ultra fine filaments. COPYRIGHT: (C)2008,JPO&INPIT
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