METHOD FOR ORIENTATION OF POLYPROPYLENE FIBERS

摘要

FIELD: production of polypropylene filaments and fibers. ^ SUBSTANCE: method involves deforming fiber by providing difference of velocities of rolls at inlet and outlet ends of orientation drawing chamber, with drawing frequency being selected depending on minimal dispersion of fiber tensile strength value obtained from analyses of resulting fiber carried out in parallel with one another. ^ EFFECT: increased uniformity of structure and stabilized characteristics of polypropylene fiber. ^ 4 dwg, 3 ex