| 摘要 |
PROBLEM TO BE SOLVED: To further reduce the weight of a filter duct and improve its shape stability while securing its particle collection performance. SOLUTION: The filter duct has a bag-like fiber array laminate 101 provided with an opening portion from which gas flows in, such that the gas flowing into the inside from the opening flows out to the outside through the fiber array laminate 101. The fiber array laminate is formed by laminating a plurality of fiber array layers 101A to 101D in which fibers 103A to 103D are arranged approximately linearly in one direction, where some fiber array layers 101A, 101C and the others 101B, 101D are laminated such that the fiber stretching directions 105A to 105D are mutually orthogonal. COPYRIGHT: (C)2009,JPO&INPIT
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