Reinforced asymmetric capillary membranes

摘要

An asymmetric braid reinforced capillary ultra- or micro-filtration membrane (1), comprising a tubular braid (5) made of monofilaments and a membrane coating (4) with an outer skin, i.e. smaller pores near the outside diameter (3) than near the inside diameter (2), the coating (4) being closely arranged around the outside diameter (2) of the braid, without any substantial penetration of the coating into the braid.