| 摘要 |
An object of the present invention is to provide a porous membrane which has a superior separation performance and a high permeation performance, as well as a high mechanical physical property, in particular, a high tensile/rupture strength. A porous membrane (1) of the present invention comprises a porous body (2) which has a plurality of pores communicated from one surface to the other surface, and a reinforcement fiber (3). In the porous body (2), the reinforcement fiber exists linearly and continuously between both end faces orthogonal to its permeation direction. Namely, in two different surface positions (A, B) within the same surface of the porous body, the surface position (A) has the reinforcement fiber (3) at a sectional region containing the surface position (A), while the surface position (B) does not have the reinforcement fiber (3) at a sectional region containing the surface position (B).
|
