| 摘要 |
<p>A filter medium having a tubular, round braided texture obtained by intertwining a plurality of yarns helically in both leftward and rightward directions, or a filter medium produced by providing a fiber assembly layer on the circumferential surface of the above-mentioned filter medium. Particularly, a flexible tubular filter medium free from flex blocking caused by bending deformation, undergoing little textural change at the inner and outer circumferential portions of a bent part thereof, and having a high particle removing rate and a long lifetime, and a flexible filter element consisting of this filter medium held in a flexible casing. This invention is usefully applied to a liquid filter, especially, a fuel filter for automobiles.</p> |
