By, according to the invention, manufacturing a filter cloth (5, 6) especially to be used in filtering of gas flows, which filter is manufactured in a rolling mill where the individual layers are laminated with a membrane layer (1), to which by the use of a binder (2), such as thermoplastic sheeting, is glued a filter layer (4) with at least one metal layer (3, 13). Hereby is achieved a robust laminate (5, 6), which is, in addition, easy to manufacture in a rolling mill with heated rollers for melting of the binder (2).

A filter assembly comprising a prefiltering support layer is disclosed, wherein the prefiltering support layer comprises a non-woven fabric of fibers, the non-woven fabric having a pore size. A first mesh filter layer is arranged downstream the prefiltering support layer, wherein the first mesh filter layer has a first mesh size, wherein the pore size of the prefiltering support layer is equal to or bigger than the first mesh size of the first mesh filter layer. A container for collecting a body fluid comprising such a filter assembly as well as a method for manufacturing such a filter assembly are also disclosed.