| abstract |
(57) [Summary] [Purpose] To provide a dark curtain containing black dyed polyester fiber as a constituent fiber, and having good light-shielding properties, blackness and flameproofing properties. [Structure] Average particle diameter d is 10 to 40 nm, oil absorption H is 40 to 90 ml / 100 g, and H ≦ 86-1.15 × A flameproof blackout screen containing as a constituent fiber a polyester fiber containing 0.5 to 2.0% by weight of carbon black of 10 -2 d 2 . |