PURPOSE: To obtain the subject woven fabric, having dustproof characteristics under prescribed conditions and suitable for operation in clean rooms by covering elastic yarn with specific polyester crimped yarn, using the resultant covered yarn in (either of)warp and weft directions and providing the woven fabric of twill weave.
CONSTITUTION: The objective woven fabric for dustproof clothes is obtained by covering elastic yarn with polyester crimped yarn having 0.5-3.0de single fiber denier, using the resultant covered yarn in at least one direction of warp and weft directions, providing a woven fabric of twill weave having the surface thereof composed of the aforementioned polyester crimped yarn. The above- mentioned woven fabric satisfies conditions of (A) 3-30ml/cm2/sec air diffusibility, (B) 30-200% elongation is applying 1.5kg/5cm load in the direction of the aforementioned covered yarn used and (C) ≤30% permeability of dust having ≥0.3μ size in a state of the stretched fabric at 30%.
WADA OSAMU
NATAAMI HISATSUGU
