| 摘要 |
PROBLEM TO BE SOLVED: To provide an air filter which is excellent in ventilation performance and dust collection performance and which can be used not only for an air cleaner but also for a use other than the air cleaner such as an air conditioner, a window screen and the like.SOLUTION: In an air filter, a perforated wet nonwoven fabric where a plurality of holes are formed on the whole flat surface and which has an air permeability of 200 mL/cmsec or more and 500 mL/cmsec or less measured by JIS K3832 is a base material and an air-laid nonwoven fabric having an air permeability of 200 mL/cmsec or more and 600 mL/cmsec or less measured by JIS K3832 is arranged on one side surface of the base material. |
