The yarn count spinning limits on DREF-3 friction spinning machines for viscose and cotton fibers and the change in yarn properties with progressive change in yarn count have been investigated.

• 研究了用DREF-3摩擦纺设备加工粘胶和棉纤维时的纱线线密度范围以及随着线密度的变化带来的纱线性质的变化。