| 摘要 |
<p>PURPOSE: An asymmetric micro porous film, a manufacturing method thereof, and a treatment method of fluid are provided to maintain desired level of permeated flow rate for a desired time in a specific field, and to have lager tolerance to fouling. CONSTITUTION: An asymmetric micro porous film comprises: a first surface, a second surface, and an inner measurement limited by the first and second surfaces. The first surface has at least first and second domains. The first domain has a first porosity including a first average pore size. The second domain has a second porosity including a second average pore size. The first average pore size and the second average pore size has a ratio of at least approximately 5:1.</p> |
