FILTER PAPER AND AIR FILTER USING THE FILTER PAPER

摘要

PROBLEM TO BE SOLVED: To provide a thin filter paper capable of solving problems of a thin filter paper required for reducing a pressure loss of a high performance filter without decreasing a tear strength, and to provide an air filter including the filter paper.

SOLUTION: There is provided a method for producing a filter paper having a thickness of 0.15-0.25 mm. The filter paper is obtained by papermaking a blend comprising 95-85 mass% of extra-fine glass short fibers having an average fiber diameter of 0.2-0.6 μm and 5-15 mass% of conjugate fibers having an average fiber diameter of 3-5 μm. The air filter is composed by using the filter paper.

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