PRODUCTION OF SPLIT YARN

摘要

PURPOSE:To obtain high-strength split yarn composed of ultra-high molecular weight polyethylene. CONSTITUTION:The subject method is a method for producing split yarn including a step for slitting a film of ultra-high molecular weight polyethylene having >=5dl/g intrinsic viscosity (eta), drawing the resultant slit film at 100-150 deg.C temperature in at least the longitudinal direction at a draw ratio of at least >=2 times and providing a drawn tape and a step for cooling the aforementioned drawn tape to <=80 deg.C and then splitting the cooled tape at 0.5-4.0 splitting ratio (roll peripheral speed/tape speed).