摘要:
Provided is a novel conjugated yarn which: has excellent stretchability; is provided with a sufficient strength; shows high transparency; provides a good tactile sense; and has moderate fit power. Also provided are a knitted fabric knitted by using such conjugated yarn and a clothing product using such knitted fabric. Also provided is a method of producing a novel conjugated yarn which: has excellent stretchability; is provided with a sufficient strength; shows high transparency; provides a good tactile sense; and has moderate fit power. A core-sheath type conjugated yarn of the present invention is a core-sheath type conjugated yarn, including: a core portion containing a polyurethane; and a sheath portion containing an elastomer, in which: the polyurethane includes a double-prepolymer type polyurethane obtained by causing a prepolymer having isocyanate groups at both terminals, which is obtained by causing a polyol and a diisocyanate to react with each other, and a prepolymer having hydroxyl groups at both terminals, which is obtained by causing a polyol, a diisocyanate, and a low-molecular weight diol to react with one another, to react with each other; and the core-sheath type conjugated yarn is obtained by conjugate spinning under conditions of a fineness of 18 to 110 dtex, a weight ratio of the core portion to the sheath portion of 95/5 to 60/40, and a drawing ratio of 1.5 to 4.0.
摘要:
In an embodiment, a core-sheath type conjugated yarn includes a core portion containing a double-prepolymer type polyurethane and a sheath portion containing an elastomer. The double-prepolymer comprises a prepolymer having terminal isocyanate groups obtained from reacting a polyol and a diisocyanate, and a prepolymer having terminal hydroxyl groups obtained from reacting a polyol, a diisocyanate, and a low-molecular weight diol. In other embodiments, a method of producing the core-sheath type conjugated yarn using conjugate spinning conditions provides a conjugated yarn with a fineness of 18 to 110 dtex, a weight ratio of the core portion to the sheath portion of 95/5 to 60/40, and a drawing ratio of 1.5 to 4.0.