| 摘要 |
PROBLEM TO BE SOLVED: To perform a dyeing processing excellent in dyeability, quality and color fastness by treating para aramid fibers in a polar solvent in a pretreatment, spinning them into a spun yarn and subsequently dyeing it. SOLUTION: Short fibers of para aramid fiber are immersed into a polar solvent such as dimethyl sulfoxide, treated at >=70 deg.C for >=5min and then, spun by an ordinary method to obtain a spun yarn. A woven fabric is produced using the obtained spun yarn. Subsequently, the woven fabric is dyed using a disperse dye or a cationic dye at a temperature of >=130 deg.C and <=200 deg.C. |
