| 摘要 |
<p>A roll unit for use in a surface treatment of copper foil, comprising an axial sleeve fitted to a shaft of roll so as to realize, via the axial sleeve, rotatable support to bearing. In particular, in the roll unit, the axial sleeve consists of two sleeves, the one being a roll-side sleeve disposed on the side of roll main body while the other being a taper sleeve disposed on the side of an axial end, and not only is an oil seal disposed between the roll-side sleeve and a bearing housing but also the taper sleeve is supported by a bearing disposed in the bearing housing. Thus, there is realized a roll unit for use in the continuous execution of electrochemical surface treatments, such as roughening, rustproof and oxidizing surface treatments, on the surface of a rolled copper foil or electrolytic copper foil, especially a roll unit that not only inhibits any abrasion or corrosion of roll shaft of the roll unit and bearing but also ensures easy replacement of bearing housing, bearing and other parts.</p> |
