| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To provide: a crystalline polymer microporous membrane capable of efficiently capturing fine particles, having a high flow, causing no clogging, and having long filtering life; a method for manufacturing the crystalline polymer microporous membrane capable of efficiently manufacturing the crystalline polymer microporous membrane; and a filter for filteration using the crystalline polymer microporous membrane. <P>SOLUTION: As for the crystalline polymer microporous membrane, the average pore size of one side is larger than that of the other side, the average pore size continuously changes from one side toward the other side, the one side has a fine structure comprising a series of nodes mutually connected by fibrils, and the aspect ratio (length/width) of the nodes is 25 or above. <P>COPYRIGHT: (C)2010,JPO&INPIT</p> |
