| 摘要 |
PROBLEM TO BE SOLVED: To provide a filament nonwoven fabric having excellent flexibility, abrasion resistance and shape retentivity, and suitable for a base fabric for a disposable pocket heater. SOLUTION: The filament nonwoven fabric composed of filaments comprising a polyester obtained by mixing 0.05-4.0 wt.% of thermoplastic polystyrene-based copolymer (component B) incompatible with a polybutylene terephthalate (component A) and having a glass transition temperature of 110-160°C, with the component A, has an elongation of 30-70% in the machine direction in 22°C atmosphere, and a strength per weight per unit area of 10-30 (N/50 mm*√%)/(g/m<SP>2</SP>) in the machine direction in 22°C atmosphere, and is not subjected to interlacing treatment. COPYRIGHT: (C)2010,JPO&INPIT |
