Air filter has supports at inflow and/or outflow sides overlapping with projection of built-up adhesive on plane of neighboring folded wall for increased resistance to changing pressure directions

摘要

The air filter (31) has supports (39B) at the inflow (A) and/or outflow (B) sides. The supports are formed with a projection on the plane of the neighboring folded wall (35) as an overlapping zone with the projections of the built-up adhesive (39A) on the other folded wall surface, and within the recesses at least in sections formed on the other side of the raised parts (37). The adhesive is a fusible adhesive.