| abstract |
The present invention relates to a lyocell multifilament for tire cords and a method of manufacturing the same, and more specifically, i) dissolving cellulose and PVA mixed powder in N-methylmorpholine N-oxide (hereinafter referred to as NMMO) / water mixed solvent. To prepare a radiation stock solution (Dope); ii) an orifice having a diameter of 100 to 300 μm and a length of 200 to 2,400 μm, including several orifices having a ratio of diameter to length (L / D) of 2 to 8 times and an interval between orifices of 2.0 to 5.0 mm Extruding the spinning stock solution through a nozzle to allow the fibrous spinning stock to pass through an air layer to reach a conical top coagulation bath, and then coagulate to obtain a multifilament; iii) introducing the obtained multifilament back into the lower coagulation bath, changing the direction of travel thereof, and introducing it into a water washing bath to wash it; And iv) relates to a tire cord lyocell multifilament and a method for manufacturing the same comprising the step of drying and washing the multi-filament washed with water.n n n When using the method according to the present invention, it is possible to obtain a lyocell multifilament having excellent physical properties as a tire cord, wherein the multifilament is used as a tire cord to improve steering stability, shape stability, and uniformity. Provide a tire for a passenger car. |