| 摘要 |
The invention relates to a vacuum cleaner filter bag composed of a thermally weldable filter material, which forms the closed off interior of the vacuum cleaner filter bag. The interior is closed at least on one side by means of a weld seam designed according to the invention, in the case of which weld seam at least two layers of the filter material are welded to each other. The weld seam designed according to the invention is characterized by a far higher tear strength in comparison with weld seams known from the prior art. The invention further relates to a method for producing the vacuum cleaner filter bag, to a tool for producing the high-strength weld seam, and to an ultrasonic welding system in which said tool is integrated. |
