| 摘要 |
<p>A layered filter membrane (32) with improved anti-clogging characteristics is provided. In one embodiment, a filter membrane (32) includes multiple polymer layers (52, 54), each with different pore diameters formed by stretching the polymer layers (52, 54). Furthermore, the multiple filter layers (52, 54) are coupled together before being stretched and the different pore sizes are formed during co-stretching (106, 118) of the filter layers (52, 54).</p> |
