| 摘要 |
PROBLEM TO BE SOLVED: To provide a woven fabric having a high density and flexibility, espe cially a polyester fiber woven fabric having excellent flame retardancy, and to provide a method for producing the same. SOLUTION: This high density woven fabric using synthetic ultra fine multi- filament yarns having a single filament fineness of <=0.7 dtex at least as warps and/or wefts is characterized by having a cover factor CF of >=2,400 and a hardness coefficient satisfying the following expression (1): hardness coefficient = (BT+BW)/(specific volume)<=0.15, wherein BT is a flexural rigidity (gf.cm<2> /cm) in the warp direction by KES measurement; BW is a flexural rigidity (gf.cm<2> /cm) in the weft direction by KES measurement; specific volume (cc/g). CF= NT×DT<1/2> , wherein, NT is warp density (war/inch); DT is weft fineness (dtex)×0.9; NW is weft density (weft/inch); DW is weft fineness (dtex)×0.9.
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