| 摘要 |
<p>The appliance (1) manufactures a perforated foil of synthetic material, paper, etc. which is to be used to make bags for herbs. It consists of a rolling stand with one or more rolling passes, each with two rollers. One roller has radially projecting pointed needles. The second roller (32) has recesses (34) in its jacket surface, to acommodate the tips of the needles (40) on the opposite rollers (38).</p> |
