A bag (40) has filter surfaces (30 32) which limit a hollow space (34) of the bag where a spacer (46) is accommodated in the hollow space. An inflow side (12) and an outflow side (14) are provided in the bag. The filter surfaces enlarge around additional filter surfaces (52) at inflow and outflow sides. The filter surfaces are manufactured from a sinter material and include a carrier material with openings for receiving the sinterable material.
The use of enlarged filter bag increases the service life of the particle filter thus reducing waste.