| 摘要 |
The invention relates to a filter unit (600), a method for manufacturing such a filter unit, and a cartridge (690) comprising such a filter unit. The filter unit (600) is characterized in that it comprises a filter material (601) which is integrated into the aperture of at least one foil (602, 603, 604). In a preferred embodiment, the filter material (601) may be located in the aperture of an intermediate foil (604) which is embedded between a top foil (602) and a bottom foil (603). Such a filter unit (600) can readily be produced in cost- effective processes like roll-to-roll manufacturing technologies. |
