| 摘要 |
The invention relates to a vacuum cleaner filter bag made of non-woven fabric, which at least at one location on the edge side has a tie-up of the non-woven layers thus closing the bag. At at least one location of the edge, a spacing means is incorporated, which is formed by a double weld seam or stiffening elements, which are attached in this region. The characteristic feature of the vacuum cleaner filter bag according to the invention is an increased three-point bending stiffness. |
