POLY(ETHYLENETEREPHTHALATE) TIRE CORD, ITS PREPARATION METHOD AND TIRE COMPRISING THE SAME

摘要

A polyethylene terephthalate tire cord is provided to have an excellent shape stability, to improve adjustability or a ride comfort of vehicles and to enhance capacity of a high velocity navigation of the tire. A creeping rate of a polyethylene terephthalate tire cord is 4.0% or less when being fixed at a state of a preload 0.01 g/d and a load of 0.791 g/d for 24 hours in 100‹C and is defined by a calculus formula 1 of (L-L0)/L0 X 100. In the calculus formula 1, L is a length of the tire cord after being alone for 24 hours. L0 is a length of the tire cord when setting up and fixing the preload.