COMPACT FILTER, PROCESS TO PRODUCE A COMPACT FILTER AND FILTERING MEDIA

摘要

compact filter, process for producing a compact filter and filter medium. The present invention relates to a compact filter, especially a compact automotive air filter, with a compact filter element for interchangeable insertion into a filter housing and a process for producing a compact filter. The compact filter element comprises a filter body of a section-shaped filter medium (18). In the section-shaped filter medium (18) at least one smooth filter medium section (20) and a corrugated filter medium section (22) are superimposed and at least in certain regions mutually joined by ultrasound welding. At least one of the filter media sections (20, 22) consists of a composite of at least two components. at least one of the components is synthetic material (48) and at least one of the components is non-synthetic material (46).