The test shows that double press bar top pin in back zone draft set has bigger control of slivers in back zone,and can enhance back zone draft ability of spinning frame,increase draft multip...

• 结果表明:后区附双根压力棒新型上销牵伸装置对后牵伸区须条的控制增强,可以提高细纱机的后区牵伸能力,增大总牵伸倍数,有利于细号纱纺纱质量的提高。