| 摘要 |
<p>A permeable membrane for use on displacement presses of the type described in US 6190,506, or for converting air presses, such as those described in US 6,454,905, WO 99/23301 and WO 99/23296, into a displacement press. The membrane 2 comprising a laminate structure having at least one permeable wear layer 12, 14 and at least one semi-permeable perforated sheet layer 4.</p> |
