| 摘要 |
PROBLEM TO BE SOLVED: To provide a suction filter excellent in productivity. SOLUTION: A coil spring 17 is disposed in a bag 11 of the suction filter 10. One end part 17a of the coil spring 17 is formed by insert-molding and is buried and fixed in a pedestal member 16. The other end part 17b of the coil spring 17 is held by a pedestal member 13. The coil spring 17 stretches the bag 11. By virtue of the structure, the coil spring 17 is prevented from falling off. Since the coil spring 17 does not fall off even in a bag production process of producing the bag 11, a half-finished bag can easily be handled and thereby the productivity can be enhanced. COPYRIGHT: (C)2010,JPO&INPIT
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