| 摘要 |
<p>A drafting system has a roller (5) which drives an apron (10) that in turn drives through contact an apron (1) running over a non-driven roller (6). In the contact region (13) the apron (1) has a structured surface while outside (14) the contact region it has a smooth surface. The smooth surface is transformed into a structured surface by means of the applied pressure (F). The apron (1) consists of materials of different hardness, the spaces between raised hard sections being filled with a softer material. Alternative constructions with hard inserts have soft material covering the complete outer surface (15) of the apron or use a soft apron material with uniformly distributed hard filler particles.</p> |
