METHOD FOR ADJUSTING HIGH MODULUS YARN TENSION, AND METHOD FOR MANUFACTURING HIGHER ORDER PROCESSED PRODUCT USING HIGH MODULUS YARN

摘要

PROBLEM TO BE SOLVED: To provide a method that has a higher yarn tension adjustment effect in comparison with a conventional yarn tension adjustment method, can lower or reduce levels and variations of yarn tension and equalizes the yarn tension, and to provide a method that efficiently equalizes the tension of a plurality of high modulus fibers.;SOLUTION: A method for adjusting yarn tension is characterized as follows: when transferring high modulus fibers having a tensile modulus of elasticity of 50 GPa or more by the device with a plurality of drive rollers disposed before and after a yarn path, a circumferential speed of the drive roller at the upstream side is driven at the speed higher than the circumferential speed of the drive roller at the downstream side, and a high modulus fiber is brought into contact with the drive roller at the upstream, and then brought into contact with the drive roller at the downstream side, thereby reducing tension variations of the high modulus fibers of the drive rollers at the downstream side.;COPYRIGHT: (C)2015,JPO&INPIT