| 摘要 |
<p>PROBLEM TO BE SOLVED: To provide a filter element formed of at least two filter layers (10 and 20), in which one filter layer (20) is formed of a fiber wool material (21) and the other container filter layer (10) is formed of a foam plasticprovided with a carrier supporting the filter element (1), and the filterelement is improved so as to be assembled into a filter casing evenby an unskilled use. (11) of open porous properties fixed on the one filter layer (20), and SOLUTION: The fiber wool material is a felt (21) hardened by the infiltration of a hardening liquid, and the felt is used as a carrier to reinforce the filter element (1).</p> |
