| 摘要 |
PROBLEM TO BE SOLVED: To provide a tubular filter medium having a stable pore size with respect to the repetition of pressure in the filtering of particles contained in a fluid, especially, particles in a liquid and having characteristics capable of easily removing adhered particles in washing. SOLUTION: The tubular filter medium has a round braided texture constituted of braided yarns rotated in both left and right directions and a longitudinal direction and a support is inserted in the tubular filter medium in a contact state. The ratio of the contact area of the support with the inner wall of the tubular filter medium is 5-70% with respect to a filtering area at the time of formation of a filter. COPYRIGHT: (C)2004,JPO
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