The result shows that double short apron draft has small floating zone length,big friction field in middle apron,it can control short fibers,yarn slubs,thin places and enhance yarn quality.

• 结果表明:双短胶圈牵伸浮游区长度小,胶圈中部摩擦力界大,能有效控制短纤维,成纱粗节、细节明显减少,成纱质量提高。