Cellulose raw cord for rubber reinforcement

A method for preparing a lyocell raw cord prepared from at least 2-ply lyocell multifilaments having a certain coefficient of dynamic friction, the method comprising the steps of:

• (A) dissolving a cellulose powder in N-methylmorpholin-N-oxide to prepare a cellulose solution;
• (B) spinning the cellulose solution through a spinning nozzle, passing the spinning solution through an air gap to a coagulation bath, and coagulating the spinning solution to obtain a multifilament;
• (C) washing and drying the multifilament;
• (D) treating the surface of the multifilament twice with 0.1 to 7% by weight of a finishing oil, relative to the weight of the filament, to have a coefficient of dynamic friction of 0.2 to 0.6;
• and
• (E) twisting the filament using a direct twister at same twist to prepare a lyocell raw cord,
• wherein the lyocell raw cord gives a stress-strain curve in which (a) the lyocell raw cord has an elongation of 1.5% or less at an initial stress of 1.0 g/d, and an initial modulus value of 50 to 100 g/d;
• (b) has an elongation of 7% or less in a stress region of 1.0 g/d to 4.0 g/d;
• and (c) has an elongation of 1% or more at a tensile strength of 4.0 g/d to the breaking point, as measured in the dried state.