| 摘要 |
PROBLEM TO BE SOLVED: To provide a filter paper for liquid filtration, having well-balanced collection efficiency and pressure loss, and capable of effectively removing particles, and to provide a method for producing the paper. SOLUTION: The filter paper for liquid filtration comprises a filter medium layer and a supporting material layer, wherein the filter medium layer comprises 40-80 mass% fibrillated splittable acrylic fiber having 150-350 freeness (CFS) and 5-20 mass% fusible binder fiber, the supporting material layer comprises≥70 mass% fusible binder fiber and has 750-900 freeness (CFS). Thereby, the pore size mainly formed with the spilitable fibrillated fiber is made uniform in the filter medium layer and the filter paper has well-balanced collection efficiency and pressure loss. COPYRIGHT: (C)2007,JPO&INPIT
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