| 摘要 |
PURPOSE: A manufacturing method of polyurethane impregnated suede-like knit using nanofilaments is provided to manufacture microfiber suede-like knit of high quality with excellent dyeing ability, pill resistance, and dyeing fastness, thinner than a suede-like knit manufactured with a conventional sea island yarn, and having soft property. CONSTITUTION: A manufacturing method of polyurethane impregnated suede-like knit comprises following steps. Tricot fabric of 350 to 600 g/yd of a knit weight and a thickness of 0.4 to 0.6 mm is knitted by using a polyester-based sea island yarn having a monofilament denier of 0.004 to 0.006 dpf (at a radius of 500 nm to 700 nm) as a surface yarn and polyester-based fibers having a monofilament denier of 2 to 3 deniers as a back yarn. After napping, a first heat setting, dyeing, a second heat setting, and impregnating in oily polyurethane at a wet-pick up rate of 100 to 150%, a third heat setting, buffing, reduction-washing after elution by alkali-reducing, refine-reducing, and a fourth heat setting are performed. |
