METHOD FOR MANUFACTURING POLY(ETHYLENETEREPHTHALATE) DRAWN FIBER, POLY(ETHYLENETEREPHTHALATE) DRAWN FIBER AND TIRE-CORD

摘要

PURPOSE: A method for fabricating drawn yarn of polyethylene terephthalate is provided to improve comfortable property to drive in. CONSTITUTION: A method for fabricating drawn yarn of polyethylene terephthalate comprises: a step of spinning polymers by spinneret at 3500-4500m/min to prepare undrawn yarn; and a step of stretching the undrawn yarn in a ratio of 1.4-1.8. The polymer contains 90 mole% or more of polyethylene terephthalate. The crystallinity of the undrawn yarn is 20-35%.