拉断法生产1.66dtex正规腈纶棉条的工艺条件

Technology condition for producing 1. 66dtex regular acrylic sliver by breaking machine

介绍了拉断法生产1.66dtex正规腈纶棉条的生产过程实验研究,探索工艺、设备及原料对棉条质量的影响。结果表明获得较低缩率的最佳工艺条件是:拉断机热拉伸倍数为1.20～1.25,车速150～160m/min,SMC再割区牵伸倍数为2.67～2.70,汽蒸系统孔板孔径大于常规0.5～3mm。选取SMC主牵伸倍数为6.98～7.10,SC针梳机主牵伸值为7.73～7.75,有利于消除毛粒、毛片。

This paper describes the experimental research on the factors determining the tow quality in producing 1. 66dtex regular acrylic sliver by breaking machine. Results demonstrate the following optimum conditions for low-shrinkage sliver: hot stretch ratio of breaking machine,1.20-1.25; speed of machine,150-160?m/min; diameter of plate holes in steam system, 0.5-3?mm larger than that conventionally used; comb SMC rebreaking bone drafting fatio, 2.67-2.70. Adapting the SMC main drafting ratio to be 6.98-7.10 and comb SC main drafting ratio to be 7.73-7.75 are favorable for eliminating coarse particles and chips.