PURPOSE: To obtain an acrylic fiber having excellent needle-punching properties, hardly causing cutting of fibers by providing an acrylic fiber having specific physical properties with a finishing oil containing specific amounts of a fatty acid amide, a phosphoric ester and a nonionic surfactant.
CONSTITUTION: An acrylic fiber having ≤3d, especially ≤1d single fiber fineness, ≥20%, preferably ≥30% tensile elongation is provided with 0.2-2% owf finishing oil comprising 20-50wt.% fatty acid amide of the formula (R is 12-22C alkyl; m is 1-5), 15-40wt.% phosphoric ester and 20-70wt.% nonionic surfactant in the spinning process of the fiber and then heat-treated preferably for supplying mechanical crimping and elongation improvement to give an acrylic fiber for nonwoven fabric having excellent needle-punching property. The prepared nonwoven fabric shows excellent appearance and is suitable for uses such as wiping cloth or artificial leather.
MATSUMOTO TADAYUKI
KURODA AKITERU
ADACHI YASUO
| JPH0457965A | 1992-02-25 | |||
| JPH01168949A | 1989-07-04 |