| 摘要 |
PROBLEM TO BE SOLVED: To produce a water-dispersible fiber from a sulfopolyester, which exhibits flexibility, and in particular, which exhibits adequate tensile strength, absorptivity, flexibility, and fabric integrity upon exposure to human bodily fluids.SOLUTION: There is provided a method for producing a multicomponent fiber derived from a blend of a sulfopolyester with a water non-dispersible polymer. In the method, the multicomponent fiber has an as-spun denier of less than about 6. The water dispersible sulfopolyester exhibits a melt viscosity of less than 12,000 poise as measured at 240°C at a strain rate of 1 rad/sec. The sulfopolyester comprises less than about 25 mol% of residues of at least one sulfomonomer, based on the total moles of diacid or diol residues. There is also provided a method for producing a microdenier fiber by drawing the multicomponent fiber at a relatively high speed (for example, a speed of at least about 2,000 m/min) and then bringing the multicomponent fiber into contact with water to remove the sulfopolyester. |
