PURPOSE: To obtain a combined filament yarn having different shrinkage using a splittable conjugate fiber capable of providing a fabric having bulky and soft handle and improved in defect of conventional technique in which residual segment after dissolving and removing either one polymer is readily bundled.
CONSTITUTION: The objective combined filament yarn is characterized by using a splittable conjugate fiber consisting of plural fibers different by ≥5% in boiling-off shrinkage and being a conjugate fiber dividing a fiber forming polymer into ≥7 segments by an alkali-hydrolyzable copolymer polyester and/or a water-soluble polymer having a solubility higher than the fiber-forming polymer in the cross section of the filament and further satisfying the following items as at least low shrinkage fiber: (1) One in these segments is a core segment occupying nearly central part of filaments and (2) the remaining ≥6 petal segments are arranged around the core segment so as to encircle the core segment.
MURATA TARO
UEDA HIDEO
| JPS61194247A | 1986-08-28 |