| 摘要 |
PROBLEM TO BE SOLVED: To provide an air cleaning filter good in handling properties and excellent in air permeability. SOLUTION: In the air cleaning filter, which has a single-faced corrugated cardboard shape using a filter medium and manufactured by using a filter medium having an air cleaning function as a core and using an air permeable base material as a liner in conformity to 'packing corrugated cardboard' entered in JIS-Z-1516, a ratio P/W of the pitch P (mm) of the core and the width W (mm) of a glue pattern is 3-10.
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