Patent ID: 8307625

Claim:
A cellulose-based filament for a tire cord, wherein the cellulose-based filament satisfies the following Equation 1: 1 <R 2 /R 1≦3 Equation 1 wherein R 1 is a radius of a maximum inscribed circle of a cross-section of the filament, and R 2 is a radius of a minimum circumscribed circle of the cross-section of the filament, and R 2 /R 1 defines a cross-section shape deviation expressed as a modification ratio (“MR”); and wherein a dipped cord formed of twisted 2-3 plies of bundles including a plurality of the cellulose-based filaments, in which the filaments are twisted to have S twisting and Z twisting levels of 470 TPM, respectively, have an elongation which is 120% or greater than the elongation of a dipped bundle which is formed of a same total number of the cellulose-based filaments as the dipped cord without a twisting (0 TPM).