| 摘要 |
PURPOSE:To reduce stain on drawing roller and end breakage and to obtain polyester yarn for reinforcing rubber by setting temperature of final drawing roller and temperature of relaxing roller in specific temperature ranges and providing the yarn with an epoxy-containing treating agent between the drawing roller and the relaxing roller. CONSTITUTION:In drawing polyester yarn prepared by melt spinning by using a drawing roller group, subjecting the yarn to relaxing heat treatment using a relaxing roller and winding the yarn, temperature of the final roller among in the drawing roller group is controlled in a range of 150-235 deg.C, temperature of relaxing roller temperature <=140 deg.C and the polyester yarn between the final drawing roller and the relaxing roller is provided with a treating agent containing an epoxy compound. |
