ACRYLIC FILAMENT YARN HAVING DYEABILITY DIFFERENCE IN LONGITUDINAL DIRECTION AND METHOD FOR PRODUCING THE SAME

摘要

PROBLEM TO BE SOLVED: To obtain an acrylic filament yarn capable of providing a woven fabric or a knitted fabric with a clear splashed pattern and having an excellent after process ability and to provide a method for producing the same. SOLUTION: This acrylic filament yarn having a dyeability difference in a longitudinal direction of is characterized in that dark dyeable parts and light dyeable parts are alternately present in the longitudinal direction of constituent filaments and the unevenness (CV%) of thickness of the yarn is <=3.0%. The acrylic filament yarn is produced by spinning and drawing an acrylonitrile polymer to give an acrylic filament yarn, intermittently sticking an aqueous medium to the acrylic filament in the longitudinal direction and subjecting the acrylic filament to a relaxation heat treatment.