초록 ▼

The invention relates to a vacuum cleaner filter bag comprising a first bag wall (104) comprising a filter material and a second bag wall also comprising a filter material and a base (103). The first and the second bag wall are joined to the base along one part of the periphery thereof and are joine

The invention relates to a vacuum cleaner filter bag comprising a first bag wall (104) comprising a filter material and a second bag wall also comprising a filter material and a base (103). The first and the second bag wall are joined to the base along one part of the periphery thereof and are joined together along the remaining part of the periphery. The connection between the first bag wall, the second bag wall and the base is formed such that the vacuum cleaner filter bag is completely closed. The filter material of the first and the second bag walls is made of non-woven material. Said vacuum cleaner filter bag comprises an opening (102) through which the air which is to be filtered can pass through into the vacuum cleaner filter bag, and a retaining plate. Said vacuum cleaner filter bag is characterised in that the first and/or the second bag wall comprises at least five folds (101).

대표청구항 ▼

1. A vacuum cleaner filter bag having a first bag wall comprising a filter material and a second bag wall comprising a filter material and a base, wherein the first and the second bag wall are each joined to the base along one part of their periphery and are joined together along the remaining part

1. A vacuum cleaner filter bag having a first bag wall comprising a filter material and a second bag wall comprising a filter material and a base, wherein the first and the second bag wall are each joined to the base along one part of their periphery and are joined together along the remaining part of their periphery, wherein a connection between the first bag wall, the second bag wall and the base is formed such that the vacuum cleaner filter bag is completely closed, wherein the filter material of the first and of the second bag wall is made of a nonwoven, wherein the vacuum cleaner filter bag has an inlet opening, through which the air to be cleaned can flow into the vacuum cleaner filter bag, and a retaining plate, and wherein the first or the second bag wall has at least five folds that form surface foldings; and further comprising a fixing device that prevents at least one of the at least five folds from unfolding completely; and wherein the fixing device is arranged on a first side of the bag wall having the at least five folds that is facing towards an interior of the vacuum cleaner filter bag and a second side of the bag wall having the at least five folds on an exterior of the vacuum cleaner filter bag is free from any fixing device. 2. The vacuum cleaner bag according to claim 1, wherein the base comprises filter material or the retaining plate. 3. The vacuum cleaner bag according to claim 1, wherein fold legs of the at least five folds have inflection lines that run essentially straight. 4. The vacuum cleaner filter bag according to claim 1, wherein the maximum height of the surface foldings before a first operation of the vacuum cleaner filter bag in a vacuum cleaner is less than the maximum width of the surface foldings corresponding to the maximum height. 5. The vacuum cleaner filter bag according to claim 1, wherein before a first operation of the vacuum cleaner filter bag in a vacuum cleaner, each of the at least five folds has a length that is greater than one-third of the total extension of the vacuum cleaner filter bag in the direction of the fold. 6. The vacuum cleaner filter bag according to claim 1, wherein before a first operation of the vacuum cleaner filter bag in a vacuum cleaner, each of the at least five folds has a height between 3 mm and 100 mm. 7. The vacuum cleaner filter bag according to claim 1, wherein before a first operation of the vacuum cleaner filter bag in a vacuum cleaner, each of the at least five folds has a width between 3 mm and 100 mm. 8. The vacuum cleaner filter bag according to claim 1, wherein at least two of the at least five folds have heights or widths or shapes that differ from one another. 9. The vacuum cleaner bag according to claim 1, wherein a plurality of folds are provided that are distributed essentially uniformly across the first or the second bag wall. 10. The vacuum cleaner filter bag according to claim 1, further comprising at least one side folding that is formed by the first or the second bag wall. 11. The vacuum cleaner filter bag according to claim 10, wherein the at least one side folding itself has at least one fold. 12. The vacuum cleaner filter bag according to claim 11, wherein the at least one fold runs at an angle greater than 45° to the side folding. 13. The vacuum cleaner filter bag according to claim 1, wherein the fixing device is glued or welded to the at least one fold or to the bag wall adjacent to the at least one fold. 14. The vacuum cleaner filter bag according to claim 1, wherein the fixing device comprises at least one material strip or wherein the fixing device has a predetermined expansion behaviour or a predetermined elastic behaviour. 15. The vacuum cleaner filter bag according to claim 1, wherein the fixing device is a nonwoven material layer, a net layer, a perforated foil or a fabric ply that extends across the entire first or second bag wall. 16. The vacuum cleaner filter bag according to claim 1, wherein fibers or absorbents are provided in a hollow space that is formed by the fixing device and fold legs of the at least one fold. 17. The vacuum cleaner filter bag according to claim 1, comprising installation space utilization during operation that is greater than 65%. 18. The vacuum cleaner filter bag according to claim 1, wherein the fixing device comprises at least one nonwoven material strip. 19. A vacuum cleaner filter bag comprising: a first bag wall comprising a filter material;a second bag wall comprising a filter material;a base;an inlet opening, through which the air to be cleaned can flow into the vacuum cleaner filter bag; anda retaining plate;wherein the first and the second bag wall are each joined to the base along one part of their periphery and are joined together along the remaining part of their periphery, wherein a connection between the first bag wall, the second bag wall and the base is formed such that the vacuum cleaner filter bag is completely closed, wherein the filter material of the first and of the second bag wall is made of a nonwoven, wherein the first or the second bag wall has at least five folds and further comprising at least one side folding that is formed by the first or the second bag wall and itself has at least one fold that runs at an angle greater than 45° to the side folding; andfurther comprising a fixing device that prevents at least one of the at least five folds from unfolding completely; and wherein the fixing device is arranged on a first side of the bag wall having the at least five folds that is facing towards an interior of the vacuum cleaner filter bag and a second side of the bag wall having the at least five folds on an exterior of the vacuum cleaner filter bag is free from any fixing device.