在老式传统的纸机上应用的成型工具是水印辊。
The traditional formation tool on older slow-speed machines was the dandy roll.
水向上进入水印辊，向下透过网子，水的重新分布产生剪切力可以改善纸页的成型。
Water is driven up through the sheet into the dandy and downward through the wire; the redistribution of water causes shear on the fibers and improves sheet formation.
水印辊安放在真空箱段脱水区域的中部，对纸页施加一定的压力并通过纸页和网子驱动。
The dandy roll was placed in the middle of the suction box section where it exerted a certain pressure on the sheet and was driven by the sheet and wire.
典型的现代水印辊表面覆盖35 - 40目的网子，网子里收集的水被排到上游的一个集水盘中。
A modern roll typically has a surface covering of 35-40 mesh fabric, and the water held in the mesh is flung into a collecting pan on the upstream side.
随着纸机幅宽增加和速度的提高，水印辊直径和挺度都要增加，并且要加驱动装置以使之与网速匹配。
As machines became wider and faster, the diameter and stiffness of the dandy was increased and the rolls had to be driven so that the dandy speed matched the wire speed.
随着纸机幅宽增加和速度的提高，水印辊直径和挺度都要增加，并且要加驱动装置以使之与网速匹配。
As machines became wider and faster, the diameter and stiffness of the dandy was increased and the rolls had to be driven so that the dandy speed matched the wire speed.
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