| 摘要 |
A filter element ( 1 ) with a tubular folded bag ( 2 ) of folded filter material, which has a plurality of fold blades ( 3 ) adjacent each other in the longitudinal direction ( 10 ) of the folded bag ( 2 ) a closure cover ( 4 ) is attached at at least one axial end ( 7 ) of the folded bag ( 2 ). In order to provide a filter element which can be bent to any desired curved form while maintaining a high degree of filtration performance, and can be produced in a cost effective manner, the fold blades ( 3 ) of a folded bag ( 2 ) are provided with a combination of diagonal folds extending at an angle relative to each other such that the fold blades ( 3 ) in the longitudinal direction ( 10 ) of the folded bag extend back and forth and thereby form a three-dimensional crown structure ( 18 ). At least the outer margin of the closure cover ( 4 ) has a form corresponding to the crown structure ( 18 ) of the fold blades ( 3 ).
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