| 摘要 |
<p>In order to prevent the formation and subsequent breaking off of large agglomerations of dirt particles on the cover of a paper machine, at least o ne surface located opposite the paper web and pertaining to at least one part o f the elements forming a contact surface is provided, at least partially, with an average surface roughness of between 5 .mu.m and 100 .mu.m.</p> |
