| abstract |
[PROBLEMS] To make a stretch fabric having a high elongation rate and extremely excellent stretchability, and to obtain a majliary product excellent in detachability and wearability. A polyurethane elastic fiber having a fineness of 110 to 330 dtex is used for the core yarn (2). Either or both of polyethylene terephthalate fibers and polyamide fibers are used for the sheath yarn (3) composed of the lower twist yarn (4) and the upper twist yarn (5). When the fineness of the polyurethane elastic fiber is SS, the fineness of the entire sheath yarn is SC, the draft rate of the polyurethane elastic fiber during covering is D, and the twist number of the lower twist yarn is R, the equation K = (SS ÷ D + SC ) The twist coefficient K represented by 1/2 × R is 11000-16100, and the elongation is 360% or more. [Selection] Figure 1 |