| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide an air filter using air permeable base material deactivating virus during proliferation. <P>SOLUTION: In the air filter, the air permeable base material contains the natural extracted component extracted from pine trees, or the air permeable base material contains a plurality of kinds of natural extracted components including the natural extracted component extracted from the pine trees. It is preferable that the contents of the natural extracted component extracted from the pine trees in the air permeable base material is 0.01 g/m<SP POS="POST">2</SP>or more. <P>COPYRIGHT: (C)2013,JPO&INPIT |
