To provide a filter material for liquid which has a filter layer with a fine fiber diameter, is small in thickness, and has sufficient rigidity for pleating, and to provide a filter material for liquid suitable, for example, for a long life filter for an electric discharge machine while improving performance for collecting fine particles of several micrometers generated by electric discharge machining.
In the filter material for liquid obtained by layering a filter layer and a support layer, the filter layer comprises a synthetic fiber nonwoven fabric having an average fiber diameter of 0.4-1.2 μm and an areal weight of 20-70 g/m2. The filter material for liquid has a bending strength of 0.5 mN or above, a thickness of 0.45 mm or below, and an air permeability of 0.8-6 cc/cm2/sec.
| JPH09276637 | FILTER MEDIUM REPLACING TYPE AIR FILTER |
| WO/1997/037745 | FOAM FILTER MATERIAL AND PROCESS TO PREPARE FOAM FILTER MATERIAL |
| WO/2023/190318 | FILTER MEDIUM |
AMANO SEIICHI
UCHIMURA TETSUO
| JPH08144166A | 1996-06-04 | |||
| JP2006061789A | 2006-03-09 | |||
| JP2009006272A | 2009-01-15 | |||
| JP2009279930A | 2009-12-03 | |||
| JP2005169177A | 2005-06-30 | |||
| JPS61200830A | 1986-09-05 |
Takashi Ishida
Tetsuji Koga
Kazuhiro Nakamura
Hiroyuki Onoda
Toko Saito
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