FILTER MATERIAL, FILTER ELEMENT, AND A METHOD AND DEVICE FOR PRODUCING A FILTER MATERIAL

摘要

The invention relates to a multi-layer, web-like filter material (1) for filter elements for filtering gases and/or fluids, said material comprising a nonwoven layer (2), a cellulose layer (4), and a nanofibre layer (3) arranged between the nonwoven layer (2) and the cellulose layer (4). A reduced flow resistance is produced when the nanofibre layer (3) has an increasing fibre thickness and/or an increasing fibre density in a thickness direction (7) of the filter material (1).