The slip shaft has slip function, and there is corresponding slip action for tension change due to the change of material when the cutting is multiple. When the tension is changing or the thickness of material is uneven, it will make the winding neat, continuous, not loose or unwinding. The reel line is faster. It is mainly suitable for printing machine, cutting machine, coating machine,rewinding machine，bag machine, film blowing machine, non-woven machine and so on.