Filter bag for vacuum cleaner, has holding plate and integrated sliding area made of different materials

摘要

The bag (1) is assembled of the container part (2) open at the top and made of an air permeable material and the rigid front plate (4,5) joined to the bag (2) by welding. The plate is provided with a central opening (3,6,8), which can be fitted with a seal. A specifically shaped area (7) is arranged around the opening in order to be slid under the holding elements located at the vacuum cleaner. The sliding area (7) is made of a particular material not amalgamating with its surroundings when the plate (4, 5) is welded to the bag (2).