| 摘要 |
PROBLEM TO BE SOLVED: To provide a high tenacity lyocell dip cord and a tire by using the same. SOLUTION: The dip cord is produced by the method comprising the steps of (A)-(E). (A) Dissolving 0.01 to 3 wt% of cellulose powder in portions in concentrated liquid N-methylmorpholine N-oxide (NMMO) to prepare cellulose-containing NMMO solution. (B) Feeding the NMMO solution and cellulose powder into an extruder having a screw to be subjected to dispersing, mixing, shearing, kneading, melting and measuring ability in the extruder to prepare a swollen and homogenized cellulose solution. (C) 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. (D) Subject the multifilament to water-wash, drying and oil-treatment, followed by winding. (E) Twisting the wound yarn with a twisting machine to prepare a greige cord, weaving the greige cord and dipping the woven cord in a dipping solution. A radial pneumatic tire comprises the dip cord. COPYRIGHT: (C)2005,JPO&NCIPI |
