| 摘要 |
<p>The filter fabric containing polyphenylene sulfide fibers, characterized in that the following (1) and/or (2) is satisfied is used to provide a filter fabric and a bag filter composed of the filter fabric excellent in dust-collecting efficiency and high in mechanical strength: (1) Containing at least two webs, one of which on the dust side contains 50 wt% or more of heat resistant fibers with a fiber diameter of 15 µm or less, while the other web on the clean side contains 50 wt% or more of heat resistant fibers with a fiber diameter of 20 µm or more (2) Containing a web containing polyphenylene sulfide staple fibers with their fineness kept in a range from 1 to 3 dtex and fluorine-based staple fibers with their fineness kept in a range from 2 to 4 dtex.</p> |
