| 摘要 |
The dust filter bag (10) has an entry opening that is provided with a holding plate (11) and a closure flap. The closure flap is moved between open position and closed position. The entry opening is closed using the closure flap. The closure flap is secured in closed position based on application of magnetic force. The closure flap is provided with a magnetic element such as plastic-bonded ferrite magnet or sintered ferrite magnet. |
