| 摘要 |
The bag has two bag walls comprising a filter material and connected together along periphery of the bag walls such that the filter bag is completely closed. The filter material of the bag walls is made of non-woven material. Air to be filtered is passed through an intake opening (102) into the vacuum cleaner filter bag, which comprises a retaining plate (103). The bag walls comprise five folds (101). A side fold of the five folds comprises inflexion lines, which runs in a straight manner, where heights and/or breadths and/or shapes of two of the folds are different from each other. |
