PREPARATION METHOD FOR LYOCELL FILAMENT FIBERS, LYOCELL FILAMENT FIBERS, TIRE CORD, AND PREPARATION METHOD FOR TIRE CORD

摘要

The present invention relates to a method of preparing lyocell filament fibers, and lyocell filament fibers. More particularly, the present invention relates to a method of preparing lyocell filament fibers using a solidifying bath of 30 to 60 0C in the step of solidifying the filaments, lyocell filament fibers, and a tire cord including the same. Furthermore, the present invention relates to a tire cord and a method of preparing the same. More particularly, the present invention relates to a tire cord including a twisted yarn of lyocell filament fibers and an adhesive, wherein the pick up rate of the adhesive is 6 to 10 wt%, and the degree of fatigue resistance is 70% or more at the fatigue condition of extension and contraction of +2% according to the ASTM D 6588 method by using a disk fatigue tester. The lyocell filament fibers according to the present invention show a dense structure advantageous for providing good elongation and make penetration of the dipping solution easy during preparing the tire cord, and the fatigue property and fatigue resistance are good, owing to the proper pick up rate of the adhesive, and thus there is an effect of improving the durability and safety of the tire.